Battery management circuit and method thereof
A technology of battery management circuit and voltage detection circuit, which is applied to battery circuit devices, circuits, secondary battery charging/discharging, etc., and can solve problems such as inability to detect the working status of the host, shorten the service life of the battery pack, and easily damage the battery due to power loss , to achieve the effect of ingenious and reasonable design of the overall circuit structure, high degree of automation and prolonging the service life
Active Publication Date: 2021-05-18
东莞得和科技有限公司
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AI Technical Summary
Problems solved by technology
If the wake-up switch is pressed, the charging and discharging function of the battery pack is directly awakened because the battery pack voltage of the battery pack is not detected, which will easily cause damage to the battery pack and shorten the service life of the battery pack.
In addition, because the existing battery pack cannot detect the working status of the host, the battery is easily damaged due to power loss after long-term storage
Method used
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[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0053] Such as figure 1 with figure 2 As shown, a battery management circuit is used for a battery pack 50 of a battery pack, especially for a battery pack 50 of an electric vehicle, a starting battery pack 50 of an automobile and a motorcycle, a power supply battery pack 50 of an electric tool, and the like. A battery management circuit includes a main control circuit 10, a signal receiving circuit 20 for receiving external signals, a voltage detection circuit 30 for detecting the voltage of a battery pack 50, and a switching circuit 40 for controlling the charge and discharge state of the battery pack 50;
[0054] The signal receiving circuit 20 is connected to the main control circuit 10, and the main control circuit 10 is respectively connected to the voltage detection circuit 30 and the switching circuit 40;
[0055] After the signal re...
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The present invention relates to a battery management circuit and a method thereof, including a main control circuit, a signal receiving circuit, a voltage detection circuit and a switching circuit; a battery management method, which is applied to a battery management circuit, and the method includes: the main control circuit receives the signal from the Get the external signal in the circuit and judge whether it is the set trigger signal. If so, control the voltage detection circuit and the switching circuit to start. The voltage detection circuit detects the voltage value of the battery pack. When the detection voltage value is lower than the lowest value of the rated starting voltage range, Then control the battery pack to only charge and not discharge; when the detected voltage value is higher than the highest value of the rated starting voltage range, control the battery pack to only discharge but not charge; when the detected voltage value is within the rated starting voltage range, control the battery pack to charge and discharge at the same time; The whole process has a high degree of automation, instead of manually pressing the mechanical switch, the operation is simple, no manual operation is required, the cost of disassembly and assembly is reduced, the degree of intelligence is high, the battery pack is not damaged, and the service life of the battery pack is extended.
Description
technical field [0001] The present invention relates to the field of battery technology, in particular to a battery management circuit and a method thereof. Background technique [0002] The battery pack of the existing battery pack is generally awakened by a mechanical switch, and the operation method is as follows: When the battery pack is dormant, the battery pack must be removed from the host (or additional wiring) and then press the wake-up switch, which is troublesome to operate and requires Only professionals can do it. If the wake-up switch is pressed, the charging and discharging function of the battery pack is directly awakened because the battery pack voltage of the battery pack is not detected, which may easily cause damage to the battery pack and shorten the service life of the battery pack. In addition, because the existing battery pack cannot detect the working status of the host, the battery is easily damaged due to power loss after long-term storage. [00...
Claims
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IPC IPC(8): H02J7/00H01M10/42H01M10/44H01M10/48
CPCH01M10/425H01M10/44H01M10/48H01M2010/4271H01M2010/4278H02J7/0029H02J7/0068Y02E60/10
Inventor 梅志刚刘忠群张艳春
Owner 东莞得和科技有限公司