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Power battery module

A technology for power batteries and battery packs, which is applied to battery pack parts, secondary batteries, non-aqueous electrolyte batteries, etc., and can solve problems such as complex wiring, easy wrong installation, and complexity

Pending Publication Date: 2021-10-12
陈带秀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This sampling method not only has a complicated circuit, but also requires manual assembly of the sampling wiring harness, which is not conducive to automatic production; moreover, it is very easy to have wrong installation and missing installation during the assembly process.
In addition, it is necessary to set up a wire harness fixing structure separately, which is relatively complicated, and it is very easy to cause leakage due to wire sheath wear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0215] Such as image 3 Shown is a pouch battery module. The pouch battery is packaged with aluminum-plastic film. The module includes 14 pouch batteries 1 (type A pouch batteries) and a sealed frame 2. The body of the pouch battery 1 13 is soaked in the cooling liquid and directly contacts with the cooling liquid to exchange heat; the sealing frame 2 includes a top edge 21 and side edges 22 located on both sides of the top edge, and the top edge 21 of the frame forms a sealing interface with the top edge 11 of the battery 1, and the The coolant is sealed to prevent the coolant from overflowing; the inner side of the side 22 of the sealed frame 2 forms a sealed interface with the side 12 of the battery 1, and the outer sides of the adjacent two frames form a sealed interface, and the coolant is sealed and isolated to prevent the coolant from leaking. Contact with the cut edge of the pouch battery. The cooling liquid is an antifreeze liquid containing ethylene glycol and water...

Embodiment 2

[0239] This embodiment is roughly the same as Embodiment 1, except that the pouch battery is a B-type pouch battery, and its positive and negative tabs come out from opposite sides respectively, as Figure 8 As shown, the positive tab 141 and the negative tab 142 are respectively located at opposite ends of the pouch battery body 131 . The B-type pouch battery has two top sides, namely a first top side 111 and a second top side 112 . Correspondingly, its sealing frame includes a first frame top edge and a second frame top edge, and one or two frame sides, and any frame side extends from the same side of the first frame top edge to the second frame top edge. side.

[0240] Such as Figure 11 Shown is another pouch battery module, which includes three B-type pouch batteries 1B and a sealed frame 2B. The body 13 of the pouch battery 1B is soaked in the cooling liquid to exchange heat with the cooling liquid; The sealing frame 2B includes two top edges and side edges located on...

Embodiment 3

[0242] This embodiment is roughly the same as Embodiment 1, except that the pouch battery of the pouch battery module in this embodiment has the following structure: the cell of the pouch battery is wrapped by aluminum-plastic film, and the aluminum The plastic film contains an aluminum layer (8021 aluminum alloy), and the pouch battery has a heat-sealed top edge and a heat-sealed side edge, and the heat-sealed side edge has a cut edge, and the cut edge has an aluminum layer; The aluminum-plastic film of the pouch battery is also wrapped with a second aluminum layer (or outer aluminum layer), and the aluminum layer in the cut edge is electrically insulated from the second aluminum layer and subjected to anti-creeping treatment. The second aluminum layer is in direct contact with the cooling liquid.

[0243] The aluminum-plastic film is a three-layer aluminum-plastic film formed by compounding a polyamide resin layer, an 8021 aluminum alloy layer and a polypropylene resin layer...

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PUM

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Abstract

A power battery module comprises a battery pack, a heat exchange medium and a module shell. The battery pack comprises a plurality of single batteries and power connecting sheets, and the power connecting sheets are electrically connected with the adjacent single batteries; the shell wraps the battery pack and the sampling module, the sampling module comprises a flexible circuit board and a protection device, and the flexible circuit board is electrically connected with a plurality of temperature sensors and current sensors; the temperature sensor is connected with the power connecting sheet, and the current sensor is electrically connected with the power connecting sheet; the protection device comprises an outer insulating layer and an inner insulating layer, the outer insulating layer covers the outer surface of the flexible circuit board, and the inner insulating layer is clamped between the power connecting sheet and the single battery.

Description

technical field [0001] The invention belongs to the field of power batteries, in particular to a new energy vehicle battery module. Background technique [0002] Compared with traditional dry batteries and fuel cells, new energy lithium batteries have excellent characteristics such as good safety, high energy storage density, and portability. They are widely used in modern mobile phones, computers and other electronic products. Currently used The lithium battery cell is mainly composed of a casing, an electrolyte solution placed in the casing and a battery cell, and a positive electrode and a negative electrode are arranged on the top of the lithium battery cell. [0003] In addition, the current pouch battery module is not sufficiently sealed to the side of the pouch battery. If it is placed directly in water, water will leak in from the side and cause the battery to bulge and fail. [0004] The soft packaging material of the soft pack battery is usually aluminum-plastic f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/105H01M50/186H01M50/569H01M50/536H01M50/553H01M10/48H01M10/613H01M10/6568
CPCH01M10/613H01M10/486H01M10/6568H01M50/105H01M10/48H01M50/553H01M50/186H01M50/569H01M50/536H01M10/058Y02P70/50Y02E60/10
Inventor 不公告发明人
Owner 陈带秀