Battery protection system, battery protection method and battery pack
A technology for protecting systems and battery packs, applied in battery overheating protection, battery disconnection circuits, battery circuit devices, etc., can solve problems such as increasing system cost, increasing system power consumption, increasing printed circuit board size, etc., to reduce system cost Effect
Active Publication Date: 2021-12-10
AOTU ELECTRONICS WUHAN
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, prior art battery protection systems have some disadvantages
A thermistor is a relatively expensive device and has a relatively large size
The prior art battery protection system includes two thermistors, which not only increases the cost of the system, but also increases the printed circuit board size of the system
Additionally, if the thermistor R is activated in parallel TS1 and R TS2 , it will also increase the power consumption of the system
Method used
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Embodiment Construction
[0024] Detailed reference will be given below to examples of the present invention. Although the present invention has been illustrated and illustrated by these embodiments, it should be noted that the present invention is not limited to these embodiments. On the contrary, the invention covers all alternatives, modifications and equivalents which are within the spirit and scope of the invention as defined by the appended claims.
[0025] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the gist of the present invention.
[0026] An embodiment of the present invention provides a battery protection system, which includes a first-level pro...
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Disclosed are a battery protection system, a battery protection method and a battery pack. The battery protection system includes: a sensor circuit configured to generate a sensing signal indicative of a temperature of the battery pack when in an active state; a primary protection circuit configured to generate a synchronization signal having a first state or a second state, when When the synchronization signal is in the first state, the first-level protection circuit samples the sensing signal, and provides the first-level protection for the battery pack based on the sensing signal; and the second-level protection controlled by the synchronization signal circuit, when the synchronization signal is in the second state, the second-level protection circuit samples the sensing signal, and provides a second-level protection for the battery pack based on the sensing signal. Due to the synchronization signal, the primary protection circuit and the secondary protection circuit in the battery protection system can share one sensor circuit, thereby reducing system cost, printed circuit board size and power consumption.
Description
technical field [0001] The invention relates to the field of batteries, in particular to a battery protection system, a battery protection method and a battery pack. Background technique [0002] The battery protection system plays a key role in protecting the battery pack (PACK) from damage caused by abnormal conditions (such as: overvoltage, undervoltage, overcurrent, short circuit, overheating, or overcooling, etc.), for The battery pack provides a safe application environment. A battery protection system in the prior art includes a first-level protection circuit and a second-level protection circuit. The first-level protection circuit monitors the status of the battery pack and provides protection (first-level protection). If it is detected that the above-mentioned abnormal state exists in the battery pack, the first-level protection circuit takes corresponding measures (for example: turning off the charging switch and / or the discharging switch) to protect the battery ...
Claims
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IPC IPC(8): H02J7/00H01M10/48
CPCH01M10/486H01M10/48H01M10/425H02H7/18H02J7/0031G01K13/00Y02E60/10H02J7/00309H02J7/0091H02J7/007192H02J7/007194H01M10/4257H02H3/085H02H5/044
Inventor 栗国星
Owner AOTU ELECTRONICS WUHAN