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Battery

A battery and main battery technology, applied in the direction of batteries, multi-mode batteries, battery pack components, etc., can solve problems such as hidden safety hazards, lack of vehicle power, voltage and capacity reduction, and achieve the effect of ensuring safety.

Active Publication Date: 2021-03-30
BYD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the related technology, there are mainly two types of short-circuit CID and open-circuit CID in the battery. After the short-circuit CID is reversed, the battery module has one less battery to work, and the voltage and capacity are reduced. After the open-circuit CID is reversed, the entire module is disconnected. Electricity, lack of power of the vehicle, there is a great potential safety hazard

Method used

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Embodiment Construction

[0031] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present invention will be described in detail below.

[0032] Reference below Figure 1-Figure 5 A battery 100 according to an embodiment of the present invention is described. The battery 100 may be applied to a battery module (not shown) such as a power battery module of a vehicle.

[0033] like Figure 1-Figure 5 As shown, the battery 100 according to the embodiment of the present invention includes a main battery 1 , a backup battery 2 and a current cutoff device.

[0034] Specifically, the main battery 1 includes a casing 15 , a cover plate 16 , a first pole 11 , a second pole 12 and a pole core. The top of the casing 15 is open, and the cover plate 16 is provided on the top of the casing 15 . An accommodating space is defined between the body 15 and the cover plate 16 , the fi...

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Abstract

The present invention discloses a battery, and the battery comprises a main battery, wherein the main battery comprises a housing, a cover plate, a first electrode post, a second electrode post and anelectrode core; a standby battery which comprises a standby battery pole column, wherein the standby battery pole column is electrically connected with the second pole column; a current cut-off device which comprises an overturning piece, wherein the overturning piece is electrically connected with the first pole column, and the overturning piece keeps in contact with the pole lug of the pole core and is disconnected with the second pole column so as to enable the first pole column to be electrically connected with the pole lug; and the overturning piece is disconnected with the tab of the pole core and is in contact with the second pole column, so that the first pole column is electrically connected with the standby battery pole column. According to the battery disclosed by the invention, when the main battery fails due to thermal runaway, the standby battery can be used as a substitute battery to be connected into a battery module circuit, so that the number of batteries in the battery module is kept unchanged, and the safety of a vehicle is ensured.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular to a battery. Background technique [0002] In order to prevent the occurrence of thermal runaway of the battery, a CID (current interrupt device, current cut-off device) is usually used. When the internal pressure of the battery increases to a certain level, the CID is reversed and the connection between the battery and the external circuit is cut off) to prevent the battery from being overcharged, over-discharge or over-current. [0003] In the related art, two types of short-circuit CID and open-circuit CID are mainly used in the battery. After the short-circuit CID is reversed, the battery module has one less battery to work, and the voltage and capacity are reduced. After the open-circuit CID is reversed, the entire module is broken. Electricity, the lack of power of the vehicle, there is a great safety hazard. SUMMARY OF THE INVENTION [0004] The present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/578H01M10/04
CPCH01M10/0445H01M2220/20Y02E60/10Y02P70/50
Inventor 杜木挺潘仪张亚楠李博
Owner BYD CO LTD