Patents by Inventor Xiangjun Dai
Xiangjun Dai 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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Publication number: 20240039098Abstract: The present disclosure provides a battery module and a battery pack. The battery module includes: multiple cells and an outer frame. The outer frame includes: four support columns, two side plates, and two end plates. The two side plates are arranged opposite to each other. The two end plates are arranged opposite to each other. The four support columns are respectively connected between end portions of the side plates and the end plates. One of a top and a bottom of the support column is provided with a support platform and another is provided with a fitting hole. The support platform of one battery module is fittable in the fitting hole of another battery module.Type: ApplicationFiled: September 29, 2023Publication date: February 1, 2024Applicant: BYD COMPANY LIMITEDInventors: Lei ZHOU, Zhixue HUANG, Xiangjun DAI, Zhengyi HUANG
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Patent number: 9099875Abstract: A reverse-connection protecting device comprises an interface, a battery control module and an activation module. The interface includes first and second lead-in ends coupled to respective ones of first and second lead-out ends. The second lead-in end is couplable to a negative terminal of a backup battery. The second lead-out end is couplable to each negative terminal of a load and an external power supply. The battery control module is coupled to the first lead-in end of the interface and couplable to a positive terminal of the backup battery. The battery control module is configured to control the charging or discharging of the backup battery. The activation module is coupled to the battery control module, and couplable to the load and the external power supply.Type: GrantFiled: February 25, 2011Date of Patent: August 4, 2015Assignee: BYD Company LimitedInventors: Qiuping Pan, Qingfei Zheng, Xiangjun Dai
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Patent number: 8953291Abstract: The present invention discloses a reversal connection protecting circuit. The reversal connection protecting circuit includes a power supply interface, a secondary battery, a reversal connection driving unit and a power switching unit. The reversal connection protecting circuit further includes an anti-reversal unit. And the reversal connection protecting circuit further includes a processing unit and a warning interface. According to the present invention, the inconvenience brought by substituting a fuse that is melted in a protecting circuit under the condition that the power supply of the protecting circuit is reversely connected in prior art is overcome.Type: GrantFiled: September 3, 2009Date of Patent: February 10, 2015Assignee: BYD Company LimitedInventors: Yaozhong Mi, Xiangjun Dai, Qingfei Zheng, Mingxing Li
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Patent number: 8237406Abstract: The present invention provides a battery array voltage equalization device comprising: a sampling unit which samples the battery voltage signals of the battery array according to a sampling control signal; an analog-to-digital converting unit which converts the sampled voltage signals into a digital voltage signal; a control unit which generates the sampling control signal and a driving signal based on the digital voltage signal; an equalization unit which equalizes the voltage signals of the battery array based on the driving signal; a filter unit which is connected to the equalization unit and the battery array. The present invention applies the filter unit to filter out the ripple signal generated during equalization.Type: GrantFiled: September 8, 2009Date of Patent: August 7, 2012Assignee: BYD Company Ltd.Inventors: Qingfei Zheng, Xiangjun Dai, Yaozhong Mi, Aimei Zhou
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Patent number: 8212403Abstract: The present invention provides a circuit for controlling the operation of a backup power supply, wherein the circuit comprises a switch unit, a control unit, and a processing unit; wherein the switch unit is configured to be operably coupled to an external power supply; wherein a first input terminal is configured to be operably coupled to a backup power supply, a second input terminal is configured to be operably coupled to the switch unit, the third and fourth output terminals of the control unit are configured to be operably coupled to an input terminal of the processing unit; the fifth and sixth input terminals of the control unit are configured to be operably coupled to a respective output terminal of the processing unit; and the control unit is configured to turn on and off the backup power supply.Type: GrantFiled: November 20, 2009Date of Patent: July 3, 2012Assignee: BYD Company Ltd.Inventors: Xiangjun Dai, Qingfei Zheng, Yaozhong Mi, Aimei Zhou
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Publication number: 20110211286Abstract: A reverse-connection protecting device comprises an interface, a battery control module and an activation module. The interface includes first and second lead-in ends coupled to respective ones of first and second lead-out ends. The second lead-in end is couplable to a negative terminal of a backup battery. The second lead-out end is couplable to each negative terminal of a load and an external power supply. The battery control module is coupled to the first lead-in end of the interface and couplable to a positive terminal of the backup battery. The battery control module is configured to control the charging or discharging of the backup battery. The activation module is coupled to the battery control module, and couplable to the load and the external power supply.Type: ApplicationFiled: February 25, 2011Publication date: September 1, 2011Applicant: BYD COMPANY LIMITEDInventors: Qiuping Pan, Qingfei Zheng, Xiangjun Dai
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Publication number: 20110141632Abstract: The present invention discloses a reversal connection protecting circuit. The reversal connection protecting circuit includes a power supply interface, a secondary battery, a reversal connection driving unit and a power switching unit. The reversal connection protecting circuit further includes an anti-reversal unit. And the reversal connection protecting circuit further includes a processing unit and a warning interface. According to the present invention, the inconvenience brought by substituting a fuse that is melted in a protecting circuit under the condition that the power supply of the protecting circuit is reversely connected in prior art is overcome.Type: ApplicationFiled: September 3, 2009Publication date: June 16, 2011Applicant: BYD Company LimitedInventors: Yaozhong MI, Xiangjun Dai, Qingfei Zheng, Mingxing Li
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Publication number: 20100156381Abstract: The present invention provides a voltage regulating device for load starting, wherein the voltage regulating device comprises a voltage regulating circuit, and a switch circuit configured to be operably coupled between an output terminal of voltage regulating circuit and a load; wherein the switch circuit is configured to disconnect the voltage regulating circuit from the load when the voltage regulating circuit connects to a DC power.Type: ApplicationFiled: December 9, 2009Publication date: June 24, 2010Inventors: Daming Shi, Xiangjun Dai, Qingfei Zheng, Aimei Zhou
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Publication number: 20100127569Abstract: The present invention provides a circuit for controlling the operation of a backup power supply, wherein the circuit comprises a switch unit, a control unit, and a processing unit; wherein the switch unit is configured to be operably coupled to an external power supply; wherein a first input terminal is configured to be operably coupled to a backup power supply, a second input terminal is configured to be operably coupled to the switch unit, the third and fourth output terminals of the control unit are configured to be operably coupled to an input terminal of the processing unit; the fifth and sixth input terminals of the control unit are configured to be operably coupled to a respective output terminal of the processing unit; and the control unit is configured to turn on and off the backup power supply.Type: ApplicationFiled: November 20, 2009Publication date: May 27, 2010Inventors: Xiangjun Dai, Qingfei Zheng, Yaozhong Mi, Aimei Zhou
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Publication number: 20100109607Abstract: The present invention provides a battery array voltage equalization device comprising: a sampling unit which samples the battery voltage signals of the battery array according to a sampling control signal; an analog-to-digital converting unit which converts the sampled voltage signals into a digital voltage signal; a control unit which generates the sampling control signal and a driving signal based on the digital voltage signal; an equalization unit which equalizes the voltage signals of the battery array based on the driving signal; a filter unit which is connected to the equalization unit and the battery array. The present invention applies the filter unit to filter out the ripple signal generated during equalization.Type: ApplicationFiled: September 8, 2009Publication date: May 6, 2010Inventors: Qingfei Zheng, Xiangjun Dai, Yaozhong Mi, Aimei Zhou