Patents by Inventor Wenjin Xia
Wenjin Xia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8941356Abstract: Circuit and method for heating a battery. The circuit includes the battery including a first damping component and a first current storage component, a switch unit, a switching control component, a first charge storage component, and an energy transfer unit. The switching control component is configured to turn on the switch unit so as to allow a current to flow between the battery and the first charge storage component and to turn off the switch unit so as to stop the current. The energy transfer unit is configured to, after the switch unit is turned on and then turned off, start removing first energy from the first charge storage component and complete transferring the removed first energy to an energy storage component. The circuit for heating the battery is configured to heat the battery by at least discharging the battery.Type: GrantFiled: June 24, 2011Date of Patent: January 27, 2015Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8941358Abstract: A circuit for heating a battery includes the battery including parasitic damping and current storage components, a switch unit, a switching control component coupled to the switch unit, a charge storage component, and a freewheeling circuit. The charge storage component and current storage component are at least parts of an energy storage circuit. The damping component, the current storage component, the switch unit, and the charge storage component are connected. The switching control component is configured to turn on and off the switch unit so as to control a first current flowing from the battery to the charge storage component and a second current flowing from the charge storage component to the battery. The freewheeling circuit is configured to allow a freewheeling current to flow to the battery after the switch unit is turned off. The circuit for heating the battery is configured to heat the battery by at least discharging and charging the battery.Type: GrantFiled: July 3, 2012Date of Patent: January 27, 2015Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8941357Abstract: A circuit for heating a battery includes a switch unit, switching control module, damping component, energy storage circuit, and freewheeling circuit. The energy storage circuit is connected with the battery, and includes a current storage component and charge storage component. The damping component, switch unit, current storage component, and charge storage component are connected in series. The switching control module is connected with the switch unit, and is configured to control switching on and off of the switch unit so that current can flow back-and-forth between the battery and energy storage circuit when the switch unit switches on, and amplitude of the current flowing from the energy storage circuit to the battery can be controlled. The freewheeling circuit is configured to sustain the current flowing to the battery when there is current flowing from the energy storage circuit to the battery and after the switch unit switches off.Type: GrantFiled: July 18, 2011Date of Patent: January 27, 2015Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8937458Abstract: A circuit for heating a battery includes a switch unit, control module, damping component, energy storage circuit, and superposition unit. The energy storage circuit forms a loop with the battery, and includes current and charge storage components. The damping component, switch unit, current storage component, and charge storage component connect in series. The control module switches on the switch unit so current flows between the battery and energy storage circuit and switches off the switch unit to stop current flow. The superposition unit superposes energy in the energy storage circuit with energy in the battery after the switch unit switches on and off. The control module switches the switch unit off after the first positive half cycle of current flow through the switch unit after the switch unit switches on. Voltage applied to the switch unit when the switch unit switches off is lower than the switch unit's voltage rating.Type: GrantFiled: July 20, 2011Date of Patent: January 20, 2015Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Xianyin Li
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Patent number: 8841883Abstract: Circuit and method for heating a battery. The circuit includes the battery including parasitic damping and current storage components, switch unit, switching control component, charge storage component, and energy transfer and superposition unit. The charge storage and current storage components are parts of an energy storage circuit. The switching control component turns on the switch unit so as to allow current to flow between the battery and charge storage component and turns off the switch unit so as to stop the current. The energy transfer and superposition unit, after the switch unit is turned on and then off, transfers energy from the charge storage component to an energy storage component and then adjusts a storage voltage associated with the charge storage component so that a positive voltage terminal of the charge storage component is coupled, directly or indirectly, to a negative voltage terminal of the battery.Type: GrantFiled: June 27, 2011Date of Patent: September 23, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8836277Abstract: Circuit and method for heating a battery. The circuit includes the battery including parasitic damping and current storage components. A first switch unit and first charge storage component are parts of a battery discharging circuit. A second current storage component is in series with the first charge storage component and a one-way semiconductor component. The one-way semiconductor component and second current storage component are in parallel with the first switch unit. The first charge storage component, second current storage component, and the one-way semiconductor component are parts of a battery charging circuit. A second switch unit is in parallel to the first charge storage component and the second current storage component. The second switch unit and the second current storage component are parts of a voltage regulation and polarity inversion circuit for the first charge storage component. The circuit heats the battery by discharging and charging the battery.Type: GrantFiled: June 27, 2011Date of Patent: September 16, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8836288Abstract: Circuit and method for heating a battery. The heating circuit includes a switch unit, a switching control module, a one-way semiconductor component, a damping component and a transformer. The switching control module is electrically connected with the switch unit. The battery, the damping component, a first winding of the transformer, and the switch unit are connected in a first loop with each other to constitute a battery discharging circuit. The battery, the damping component, a second winding of the transformer, and the one-way semiconductor component are connected in a second loop with each other to constitute a battery charging circuit.Type: GrantFiled: July 22, 2011Date of Patent: September 16, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8829856Abstract: Circuit and method for heating first and second batteries. The heating circuit includes first and second switch units, first and second damping components, first and second current storage components, switching control module and energy storage component. The first battery, first damping and current storage components, energy storage component and first switch unit are connected in a first loop to constitute a first charging/discharging circuit. The second battery, second damping and current storage components, energy storage component and second switch unit are connected in a second loop to constitute a second charging/discharging circuit. When the energy storage component is charged/discharged, current in the second charging/discharging circuit is reverse to current in the first charging/discharging circuit.Type: GrantFiled: July 21, 2011Date of Patent: September 9, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8823317Abstract: Circuit and method for heating first and second batteries. The heating circuit includes first and second switch units, first and second damping components, first and second current storage components, switching control module and charge storage component. The first battery, first damping and current storage components, first switch unit and charge storage component are connected in a first loop to form a first charging/discharging circuit. The second battery, second damping and current storage components, charge storage component and second switch unit are connected in a second loop to form a second charging/discharging circuit. When the charge storage component is charged or discharges, charging/discharging current in the second charging/discharging circuit is reverse to that in the first charging/discharging circuit.Type: GrantFiled: July 22, 2011Date of Patent: September 2, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8816647Abstract: According to some embodiments of the present invention, a battery heating circuit includes a switch unit, a switching control module, a damping component, an energy storage circuit, and an energy superposition unit, wherein: the energy storage circuit is connected with the battery and includes a current storage component and a charge storage component; the damping component, the switch unit, the current storage component, and the charge storage component are connected in series; the switching control module is connected with the switch unit, and configured to control ON/OFF of the switch unit, so as to control the energy flowing between the battery and the energy storage circuit.Type: GrantFiled: June 22, 2011Date of Patent: August 26, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8816634Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, and an energy storage circuit, wherein: the energy storage circuit is connected with the battery and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1 and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1 and is configured to control ON/OFF of the switch unit 1, so as to control the energy flowing between the battery and the energy storage circuit. For example, the heating circuit can improve the charge/discharge performance of the battery, improve safety when the battery is heated, and effectively protect the battery.Type: GrantFiled: June 22, 2011Date of Patent: August 26, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Patent number: 8680817Abstract: According to some embodiments of the present invention, a battery heating circuit includes a switch unit, a switching control module, a damping component, an energy storage circuit, and an energy superposition unit, wherein: the energy storage circuit is connected with the battery and includes a current storage component and a charge storage component; the damping component, the switch unit, the current storage component, and the charge storage component are connected in series; the switching control module is connected with the switch unit, and configured to control ON/OFF of the switch unit, so as to control the energy flowing between the battery and the energy storage circuit.Type: GrantFiled: June 22, 2011Date of Patent: March 25, 2014Assignee: BYD Company LimitedInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Publication number: 20120306432Abstract: Certain embodiments of the present invention disclose a battery heating circuit, wherein: the battery comprises a battery E1 and a battery E2. For example, the heating circuit comprises: a first charging/discharging circuit, which is connected with the battery E1, and comprises a damping component R1, a current storage component L1, a first switch unit 1 and a charge storage component C, all of which are connected in series to each other; and a second charging/discharging circuit, which is connected to the battery E2, and comprises a damping component R2, a current storage component L2, a second switch unit 2 and the charge storage component C, all of which are connected in series with each other.Type: ApplicationFiled: July 10, 2012Publication date: December 6, 2012Applicant: BYD COMPANY LIMITEDInventors: Wenhui XU, Yaochuan HAN, Wei FENG, Qinyao YANG, Wenjin XIA, Shibin MA
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Publication number: 20120299551Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 10, a switching control module 100, a one-way semiconductor component D10, a damping component R, and a transformer T, wherein: the switching control module 100 is electrically connected with the switch unit 10; the battery, the damping component R, the first winding of the transformer T, and the switch unit 10 are connected in series with each other to constitute a battery discharging circuit; the battery, the damping component R, the second winding of the transformer T, and the one-way semiconductor component D10 are connected in series with each other to constitute a battery charging circuit. The transformer in certain embodiments of the present invention serves as an energy storage component, and has a current limiting function.Type: ApplicationFiled: July 9, 2012Publication date: November 29, 2012Applicant: BYD COMPANY LIMITEDInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Publication number: 20120280658Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, an energy storage circuit, and a freewheeling circuit 20, wherein: the energy storage circuit is connected with the battery, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1, and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1, and is configured to control ON/OFF of the switch unit 1, so that the energy can flow back-and-forth between the battery and the energy storage circuit when the switch unit 1 switches on, and amplitude of the current flowing from the energy storage circuit to the battery can be controlled.Type: ApplicationFiled: July 3, 2012Publication date: November 8, 2012Applicant: BYD COMPANY LIMITEDInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Publication number: 20120279951Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a plurality of switch units 1, a switching control module 100, a damping component R1, an energy storage circuit, and a polarity inversion unit 101, wherein: the energy storage circuit is connected with the battery, and comprises a current storage component L1 and a plurality of charge storage components C1; the plurality of charge storage components C1 are connected with the plurality of switch units 1 in series in one-to-one correspondence to form a plurality of branches; the plurality of branches is connected in parallel with each other and then connected with the current storage component L1 and damping component R1 in series; the switching control module 100 is connected with the switch units 1, and is configured to control ON/OFF of the switch units 1.Type: ApplicationFiled: May 7, 2012Publication date: November 8, 2012Applicant: BYD COMPANY LIMITEDInventors: Wenhui XU, Yaochuan HAN, Wei FENG, Qinyao YANG, Wenjin XIA, Shibin MA, Xianyin LI
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Publication number: 20120280659Abstract: According to certain embodiments, a battery heating circuit is provided, comprising a first switch unit 11, a second switch unit 12, a third switch unit 13, a fourth switch unit 14, a switching control module 100, a damping component R1, a current storage component L1, and a charge storage component C1; the damping component R1 and the current storage component L1 are configured to connect with the battery in series to form a branch; the first switch unit 11 and the second switch unit 12 are connected in series with each other and then connected in parallel with the branch; the third switch unit 13 and the fourth switch unit 14 are connected in series with each other and then connected in parallel with the branch.Type: ApplicationFiled: June 1, 2012Publication date: November 8, 2012Applicant: BYD COMPANCY LIMITEDInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma, Xianyin Li
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Publication number: 20120161711Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit (10), a switching control module (100), a one-way semiconductor component D10, a damping component R, and a transformer (T), wherein: the switching control module (100) is electrically connected with the switch unit (10); the battery, damping component R, first winding of the transformer (T), and switch unit (10) are connected in series with each other to constitute a battery discharging circuit; the battery, damping component R, second winding of the transformer (T), and one-way semiconductor component D10 are connected in series with each other to constitute a battery charging circuit. The transformer in certain embodiments of the present invention serves as an energy storage component, and has current limiting function.Type: ApplicationFiled: July 22, 2011Publication date: June 28, 2012Applicant: BYD COMPANY LIMITEDInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
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Publication number: 20120032642Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping component R1, an energy storage circuit, and an energy superposition unit, the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit (1), the current storage component L1, and the charge storage component C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches off; the switching control modulType: ApplicationFiled: July 20, 2011Publication date: February 9, 2012Applicant: BYD COMPANY LIMITEDInventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Xianyin Li
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Publication number: 20120031890Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping component R1, an energy storage circuit, a freewheeling circuit (20), and an energy superposition unit, the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit (1), the current storage component L1, and the charge storage component C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches offType: ApplicationFiled: July 21, 2011Publication date: February 9, 2012Applicant: BYD COMPANY LIMITEDInventors: Yaochuan Han, Wenhui Xu, Wei Feng, Qinyao Yang, Wenjin Xia, Xianyin Li