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Battery control circuit, battery control method and battery

A battery control and circuit technology, applied in circuits, battery pack components, secondary battery repair/maintenance, etc., can solve problems such as low safety, gas production, expansion, etc., to ensure normal flow, avoid temperature surges, The effect of ensuring the overall safety performance

Active Publication Date: 2022-05-13
BEIJING WELION NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the embodiment of the present invention provides a battery control circuit, a battery control method, and a battery. Through the one-way conduction module provided in the battery control circuit in the battery body, when the faulty pole piece is short-circuited, it can be promptly Eliminate the aggravation of non-faulty pole pieces on faulty pole pieces, and suppress the rapid deterioration of pole pieces and batteries, thereby avoiding problems such as battery temperature surges, gas production, expansion, etc., avoiding the battery from entering a state of out-of-control, and better improving battery safety. Beneficial effects, thereby solving the technical problem of low safety caused by control hysteresis in the prior art

Method used

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  • Battery control circuit, battery control method and battery
  • Battery control circuit, battery control method and battery
  • Battery control circuit, battery control method and battery

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Experimental program
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Effect test

Embodiment 1

[0041] Such as Figure 2 to Figure 4 As shown, a battery control circuit in this embodiment is arranged in the battery body 1, and the battery body includes a plurality of positive electrode sheets 2 and a plurality of negative electrode sheets 3, and any one of the positive electrode sheets 2 and the positive electrode connection terminal 5 of the battery body A unidirectional conduction module 4 is arranged between any negative electrode sheet and the negative terminal 6 of the battery body, and the unidirectional conduction module 4 includes a first end 41 for current input or output, and a first terminal 41 for current output or The second terminal 42 for input and the control terminal 43 for switching the current direction. Further, the one-way conduction module 4 in this embodiment also includes a first electric control assembly 7 and a second electric control assembly 8 connected in parallel, and the first and second electric control assemblies are used to turn on and s...

Embodiment 2

[0048] Such as Figure 5 As shown, this embodiment is based on the first embodiment. As a preferred implementation mode, the first electronic control component 7 in this embodiment is the first triode 71, and the second electronic control component 8 is the first triode 71. The second and third transistors 81, the bases of the first and second transistors are connected to the control terminal, so as to play the role of controlling the input control signal.

[0049] It should be noted that the one-way conduction module in this embodiment is composed of the collectors and emitters of two triodes of the same type connected in reverse, and the two reverse contacts are respectively connected to the current input / output line and the electrode of the collector. The bases of the two triodes are respectively connected to the control terminals of the one-way conduction module (the control terminals in this embodiment include the first control terminal and the second control terminal). ...

Embodiment 3

[0052] Such as Figure 6 As shown, this embodiment is based on the first embodiment. As a preferred implementation mode, the first electric control assembly 7 in this embodiment includes a first relay 72 and a first diode 73. The first The relay 72 and the first diode 73 are connected in series; the second electric control assembly 8 includes a second relay 82 and a second diode 83, and the second relay 82 and the second diode 83 are connected in series connect. Wherein, the first and second relays are connected to the control terminal.

[0053] It should be noted that the first and second relays and the first and second diodes in this embodiment are low-voltage circuit breakers and diodes commonly used in the prior art, so they will not be described in detail here.

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Abstract

The invention provides a battery control circuit, a battery control method and a battery, the battery comprises a battery body, the battery body comprises a plurality of positive plates and a plurality of negative plates, a one-way conduction module is arranged between the positive plate and the positive electrode connecting end of the battery body and / or between the negative plate and the negative electrode connecting end of the battery body, the one-way conduction module comprises a first electric control assembly and a second electric control assembly, and the first electric control assembly and the second electric control assembly are connected in parallel; when the battery is in a charging state, the first electric control assembly is in one-way conduction; when the battery is in a discharging state, the second electric control assembly is in one-way conduction, so that the fault pole piece can be prevented from being aggravated by a non-fault pole piece in the initial stage of short circuit of the fault pole piece, and rapid deterioration of the fault pole piece and the battery is inhibited, so that sudden temperature increase, gas production, expansion and the like of the battery are avoided, the battery is prevented from entering an out-of-control state, and the service life of the battery is prolonged. And the beneficial effect of better improving the safety of the battery is achieved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery control circuit, a battery control method and a battery. Background technique [0002] With the development of the lithium-ion battery industry, lithium-ion batteries are used more and more widely. As an important energy storage device, lithium-ion batteries have attracted more and more attention. Lithium-ion batteries have excellent properties such as high energy density, high working voltage, and long cycle life, making them widely used in 3C digital products, new energy vehicles, energy storage and other fields. [0003] How to better improve the safety of batteries is the content that has been researched in the battery field. The existing batteries still have safety problems in the structural manufacturing process. Through the research and analysis of the internal structure of the battery cell, the short circuit inside the battery body often occurs on a very sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M50/574
CPCH01M10/42H01M50/574Y02E60/10
Inventor 刘云皓高峰王瑞成施永奎李文俊俞会根
Owner BEIJING WELION NEW ENERGY TECH CO LTD
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