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Heating battery module

A battery module and heating chip technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of poor heating uniformity, small contact area, poor process operability, etc., and achieve consistent contact area and heating uniformity. good effect

Pending Publication Date: 2020-01-17
NANJING JINLONG NEW ENERGY AUTOMOBILE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The serpentine winding structure is difficult to assemble, cannot be effectively positioned, and the process is poor in operability; at the same time, the thickness of the general PI (polyimide) heating sheet is less than 0.3mm, and the contact circle angle is about 30 when the gap between the cells is 1-2mm. °, the contact area is small; it is impossible to ensure that the contact area between the heating sheet and each cell is consistent, resulting in poor heating temperature uniformity

Method used

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] The heating battery module of the present invention includes a battery cell 1, a matching bracket 2 installed on the front and rear ends of the battery cell 1 and fixing the battery cell 1, a silica gel block 3 and a PI type heating sheet 4, wherein the battery cell 1 is cylindrical , the cylindrical surface of the cell 1 is closely attached to the PI type heating sheet 4, the silica gel block 3 is arranged in parallel with the cell 1 and the silica gel block 3 is closely attached to the PI type heating sheet 4.

[0018] Among them, the PI type heating plate 4 has a three-layer structure, the middle is a metal heating plate 5, usually made of nickel-chromium alloy, copper foil and other materials; the outer two layers are PI (polyimide) film 6, which is an organic polymer Material, high temperature resistance, long-term use temperature range -200 ~ 300 ℃, and go...

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Abstract

The invention discloses a heating battery module. The heating battery module comprises battery cells, a matching support, a silica gel block and a PI type heating sheet, the matching support, the silica gel block and the PI type heating sheet are installed at the front end and the rear end of the battery cell respectively and used for fixing the battery cells, each battery cell is cylindrical, thecylindrical surfaces of the battery cells are tightly attached to the PI type heating sheet, the silica gel block is parallel to the battery cells, and the silica gel block is tightly attached to thePI type heating sheet. According to the heating battery module, the contact area of the heating sheet and each battery cell can be ensured to be consistent, and the heating temperature uniformity isgood.

Description

Technical field: [0001] The invention relates to a heating battery module, which belongs to the technical field of battery heat management. Background technique: [0002] When the power lithium-ion battery is in use, it needs to be at a suitable temperature to ensure its normal use. At a lower temperature, the chemical reaction activity of the battery decreases. During the charging process, lithium ions are extracted from the positive electrode and migrated into the negative electrode material through the electrolyte. The migration of lithium ions slows down. The lithium ions on the surface of the negative electrode have not been embedded in the negative electrode. It is reduced to metallic lithium and precipitated on the surface of the negative electrode to form lithium dendrites, which can easily cause safety accidents. Therefore, it is necessary to perform preheating treatment before charging in a low temperature environment. [0003] Due to the special circular structu...

Claims

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Application Information

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IPC IPC(8): H01M10/615H01M10/643H01M10/6555H01M10/6571H01M10/0525
CPCH01M10/615H01M10/643H01M10/6555H01M10/6571H01M10/0525Y02E60/10
Inventor 程德勇洪求政
Owner NANJING JINLONG NEW ENERGY AUTOMOBILE RES INST
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