Battery state monitoring device and battery pack
A technology of battery status and monitoring devices, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., and can solve problems such as inability to monitor battery status
Pending Publication Date: 2021-08-20
DONGFENG LIUZHOU MOTOR
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Problems solved by technology
[0005] The main purpose of the present invention is to provide a battery status monitoring device and a battery pack, aiming to solve the existing technical problem that the battery status cannot be monitored when the battery is offline
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[0030] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0031] refer to figure 1 , figure 1 It is a structural block diagram of the first embodiment of the battery state monitoring device of the present invention.
[0032] Such as figure 1 As shown, the battery state monitoring device may include: a high voltage to low voltage circuit 20 , a power supply selection circuit 10 and a battery management system 30 .
[0033] It can be understood that the high voltage to low voltage circuit 20 is a circuit capable of converting high voltage into a low voltage capable of supplying power to the battery management system 30 .
[0034] It should be understood that the battery management system 30 is a system that can enhance the utilization efficiency of the battery, prevent the battery from being overcharged and overdischarged, increase the service life of the battery, and monit...
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The invention discloses a battery state monitoring device and a battery pack. The device comprises a high-voltage-to-low-voltage circuit, a power supply selection circuit and a battery management system, the power supply selection circuit is used for conducting a loop between a low-voltage power supply terminal and the battery management system when detecting that a voltage signal exists in the low-voltage power supply terminal, so that the battery management system is powered on; the power supply selection circuit is also used for conducting a loop between the high-voltage-to-low-voltage circuit and the battery management system when it is detected that the low-voltage power supply terminal does not have the voltage signal, so that the battery management system is powered on; and the battery management system is used for collecting battery data of a battery pack when the battery management system is powered on and outputting a fault signal according to the battery data when it is detected that the battery pack breaks down according to the battery data. The technical problem that in the prior art, the state of the battery pack cannot be monitored in the off-line state of a battery is solved, and the safety of the battery is guaranteed.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a battery state monitoring device and a battery pack. Background technique [0002] At present, the real-time status of electric vehicles and battery packs needs to be sent after the high-voltage system of the vehicle is powered on, and the real-time data is collected and processed by the battery management system. [0003] After the battery pack is removed from the vehicle, or when the vehicle is powered off, the real-time status of the battery pack cannot be monitored. Especially for pure electric battery swappable electric models, the battery pack that has been replaced from the vehicle cannot provide real-time feedback on the internal conditions of the battery when it is not charging. When the battery is offline, thermal runaway such as a micro-short circuit inside the battery pack is slow Spread to form thermal diffusion, unable to issue timely and effective warnings, eas...
Claims
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Login to View More IPC IPC(8): G01R31/382
CPCG01R31/382
Inventor 伍健马洁高李强张志强
Owner DONGFENG LIUZHOU MOTOR