Abstract: Disclosed are a battery protection device and method for DC power supply. The device comprises: a first branch circuit unit and a second branch circuit unit; a monitoring unit is connected with a DC power supply, the first branch circuit unit and the second charge circuit unit respectively; the first branch circuit unit and the second branch circuit unit are connected in parallel, with one end connected to the DC power source and the other end connected to the load units in series via a battery unit; when the monitoring unit detects that the DC power supply supplies power normally, it controls the first branch circuit unit to conduct, the DC power supply supplies power to the load units; when the monitoring unit detects that the DC power supply supplies power abnormally, it controls the second branch circuit unit to conduct, the battery unit supplies power to the load units.

Abstract: The present invention discloses a method for monitoring energy efficiency performance of a device, which comprises: connecting the monitored device, obtaining input energy and output energy of the monitored device in a period of time, and calculating an energy efficiency index of the monitored device; and obtaining an energy efficiency deviation based on a standard energy efficiency index of the monitored device, and determining a state of the monitored device based on the energy efficiency deviation. The present invention further discloses a apparatus for monitoring energy efficiency performance of a device. Using the method and apparatus described above, the fine assessment for the device performance can be implemented in a simple way.

Abstract: The present disclosure discloses a communication power with multi-energy-source supply and a control method. The communication power includes: an inputting unit (21), configured to receive at least two kinds of electrical energy and provide the at least two kinds of electrical energy to an allocating unit (22); the allocating unit (22), configured to allocate at least one kind of electrical energy of the at least two kinds of electrical energy determined by a monitoring unit (25) to a power converting unit (23) according to the control of the monitoring unit (25); the power converting unit (23), configured to perform power conversion on the at least one kind of electrical energy allocated by the allocating unit (22), and then provide the converted power to an outputting unit (24); the outputting unit (24), configured to supply power to an external load; and the monitoring unit (25). With the present disclosure, the modules for input allocating, power converting, etc.

Abstract: A method for controlling charge of a battery includes: when charging a battery, monitoring a temperature of the battery in real time, and acquiring a corresponding dynamic factor according to the temperature of the battery, wherein the dynamic factor is used for characterizing a dynamically regulating component of a charge current coefficient during the charge process; calculating a maximum allowed charge current according to the dynamic factor and preset static factors; and controlling the charge of the battery according to the maximum allowed charge current. This enables adaptive charge management according to application scenarios, which effectively avoids the situation where the charge current of the battery is too high or too low, improves the environmental adaptability of battery charging, and further extends the service life of the battery and saves costs. Also provided is a method for controlling charge of a battery.

Abstract: The disclosure discloses a method and device for detecting a state of an overcurrent protector for a battery, wherein a voltage Uout of a power supply and a voltage Ubat of a battery connected to the power supply via an overcurrent protector is acquired, and U=|Uout?Ubat| is calculated; when UL?U?UH and |Ibat|?Imin, the voltage of the power supply is adjusted to be U?out, wherein UL and UH are the minimum value and maximum value of a difference between the voltage of the power supply and the voltage of the battery, respectively, Ibat is a current of the battery, and Imin is a current detecting precision for detecting a current equipment of the battery; the voltage of the battery U?bat after adjusting the voltage of the power supply is acquired, and U?=|U?out?U?bat| is calculated; and a state of the overcurrent protector for the battery is determined.

Abstract: A device and method for detecting a state of a load overcurrent protector are disclosed. The above-mentioned device includes: an input module (22), configured to be connected with two ends of the load overcurrent protector, and generate two output signals respectively at two output ends thereof; a high level signal gating module (24), configured to receive the two output signals generated by the input module (22), and gate and output a high level signal according to the above-mentioned two output signals; a low level signal gating module (26), configured to receive the two output signals generated by the input module (22), and gate and output a low level signal according to the above-mentioned two output signals; and a detecting module (28), configured to detect a voltage difference between the above-mentioned high level signal and the low level signal.

Abstract: In order to reasonably adjust charging current of a storage battery according to temperature, realize quick, safe and reliable charging of the storage battery, and effectively prolong the service life of the storage battery, the present invention provides a charging management method and apparatus for a storage battery. The method comprises the following steps: monitoring discharge capacity of a storage battery, and determining discharge depth of the storage battery according to the discharge capacity and total capacity of the storage battery; comparing the discharge depth of the storage battery with a preset battery equalizing charging threshold; and when the discharge depth of the storage battery is greater than or equal to the preset battery equalizing charging threshold capacity, actuating a temperature-control charging mode to charge the storage battery, wherein the temperature-control charging mode is to adjust charging current according to the temperature of the battery.

Abstract: A fan type temperature control method and device are provided. The device includes a fan unit including a plurality of fans and cooling an apparatus to be cooled, power supplies (v1,v2) supplying power for the fans in the fan unit, and a fan control unit which controls the fans as follows: when temperature t of the apparatus is lower than critical temperature t1 of a first temperature detect switch (k01), all fans stop; when t is higher than t1 and lower than critical temperature t2 of a second temperature detect switch (k02), all fans rotate at half speed; when t is higher than t2 while lower than critical temperature t3 of a third temperature detect switch (k03), a first fan part (M1) rotates at full speed and a second fan part (M2) stops; when t is higher than t3, all fans rotate at full speed.

Abstract: The disclosure discloses a method and device for detecting a state of an overcurrent protector for a battery, wherein a voltage Uout of a power supply and a voltage Ubat of a battery connected to the power supply via an overcurrent protector is acquired, and U=|Uout-Ubat| is calculated; when UL?U?UH and |Ibat|?Imin, the voltage of the power supply is adjusted to be U?out, wherein UL and UH are the minimum value and maximum value of a difference between the voltage of the power supply and the voltage of the battery, respectively, Ibat is a current of the battery, and Imin is a current detecting precision for detecting a current equipment of the battery; the voltage of the battery U?bat after adjusting the voltage of the power supply is acquired, and U?=|U?out-U?bat| is calculated; and a state of the overcurrent protector for the battery is determined.

Abstract: A device and method for detecting a state of a load overcurrent protector are disclosed. The above-mentioned device includes: an input module (22), configured to be connected with two ends of the load overcurrent protector, and generate two output signals respectively at two output ends thereof; a high level signal gating module (24), configured to receive the two output signals generated by the input module (22), and gate and output a high level signal according to the above-mentioned two output signals; a low level signal gating module (26), configured to receive the two output signals generated by the input module (22), and gate and output a low level signal according to the above-mentioned two output signals; and a detecting module (28), configured to detect a voltage difference between the above-mentioned high level signal and the low level signal.

Abstract: The present disclosure discloses a communication power with multi-energy-source supply and a control method. The communication power includes: an inputting unit (21), configured to receive at least two kinds of electrical energy and provide the at least two kinds of electrical energy to an allocating unit (22); the allocating unit (22), configured to allocate at least one kind of electrical energy of the at least two kinds of electrical energy determined by a monitoring unit (25) to a power converting unit (23) according to the control of the monitoring unit (25); the power converting unit (23), configured to perform power conversion on the at least one kind of electrical energy allocated by the allocating unit (22), and then provide the converted power to an outputting unit (24); the outputting unit (24), configured to supply power to an external load; and the monitoring unit (25). With the present disclosure, the modules for input allocating, power converting, etc.

Abstract: Disclosed are a battery protection device and method for DC power supply. The device comprises: a first branch circuit unit and a second branch circuit unit; a monitoring unit is connected with a DC power supply, the first branch circuit unit and the second charge circuit unit respectively; the first branch circuit unit and the second branch circuit unit are connected in parallel, with one end connected to the DC power source and the other end connected to the load units in series via a battery unit; when the monitoring unit detects that the DC power supply supplies power normally, it controls the first branch circuit unit to conduct, the DC power supply supplies power to the load units; when the monitoring unit detects that the DC power supply supplies power abnormally, it controls the second branch circuit unit to conduct, the battery unit supplies power to the load units.

Abstract: A method for controlling charge of a battery includes: when charging a battery, monitoring a temperature of the battery in real time, and acquiring a corresponding dynamic factor according to the temperature of the battery, wherein the dynamic factor is used for characterizing a dynamically regulating component of a charge current coefficient during the charge process; calculating a maximum allowed charge current according to the dynamic factor and preset static factors; and controlling the charge of the battery according to the maximum allowed charge current. This enables adaptive charge management according to application scenarios, which effectively avoids the situation where the charge current of the battery is too high or too low, improves the environmental adaptability of battery charging, and further extends the service life of the battery and saves costs. Also provided is a method for controlling charge of a battery.

Abstract: The present invention discloses a method for monitoring energy efficiency performance of a device, which comprises: connecting the monitored device, obtaining input energy and output energy of the monitored device in a period of time, and calculating an energy efficiency index of the monitored device; and obtaining an energy efficiency deviation based on a standard energy efficiency index of the monitored device, and determining a state of the monitored device based on the energy efficiency deviation. The present invention further discloses a apparatus for monitoring energy efficiency performance of a device. Using the method and apparatus described above, the fine assessment for the device performance can be implemented in a simple way.

Abstract: In order to reasonably adjust charging current of a storage battery according to temperature, realize quick, safe and reliable charging of the storage battery, and effectively prolong the service life of the storage battery, the present invention provides a charging management method and apparatus for a storage battery. The method comprises the following steps: monitoring discharge capacity of a storage battery, and determining discharge depth of the storage battery according to the discharge capacity and total capacity of the storage battery (S102); comparing the discharge depth of the storage battery with a preset battery equalizing charging threshold (S104); and when the discharge depth of the storage battery is greater than or equal to the preset battery equalizing charging threshold capacity, actuating a temperature-control charging mode to charge the storage battery, wherein the temperature-control charging mode is to adjust charging current according to the temperature of the battery (S106).

Abstract: A fan type temperature control method and device are provided. The device includes a fan unit including a plurality of fans and cooling an apparatus to be cooled, power supplies (v1,v2) supplying power for the fans in the fan unit, and a fan control unit which controls the fans as follows: when temperature t of the apparatus is lower than critical temperature t1 of a first temperature detect switch (k01), all fans stop; when t is higher than t1 and lower than critical temperature t2 of a second temperature detect switch (k02), all fans rotate at half speed; when t is higher than t2 while lower than critical temperature t3 of a third temperature detect switch (k03), a first fan part (M1) rotates at full speed and a second fan part (M2) stops; when t is higher than t3, all fans rotate at full speed.