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Battery cell and battery module

A battery cell and winding core technology, which is applied in the manufacture of battery pack components, non-aqueous electrolyte batteries, electrolyte batteries, etc., can solve the problems of heating and damage of connecting parts, achieve the effects of increasing pressure, accelerating heat dissipation, and delaying thermal runaway Effect

Pending Publication Date: 2022-03-04
SUNWODA ELECTRIC VEHICLE BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is that in the prior art, due to the lack of cooling protection measures at the connectors, the connectors will be heated during use and cause damage.

Method used

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  • Battery cell and battery module
  • Battery cell and battery module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides an electric core, such as figure 1As shown, it includes: a housing 11 , a cover plate 12 , a winding core 2 and a connecting piece 3 . The housing 11 has an opening; the cover plate 12 covers the opening of the housing 11, and forms an installation cavity with the housing 11, and the installation cavity has a layered cooling medium layer 17 and an electrolytic medium layer 18; the winding core 2 is set in the installation cavity 14, and is at least partly set in the electrolytic medium layer 18; the connector 3 is set in the installation cavity 13, and one end is connected to the winding core 2, and the other end extends toward the direction of the cover plate 12, and is connected to The part 3 is arranged at least partially in the coolant layer 17 . For example, in this embodiment, the electrolytic medium layer 18 is disposed at the bottom of the installation cavity and is disposed away from the opening, and the cooling medium layer 17 is disp...

Embodiment 2

[0064] The electric core provided in this embodiment, compared with the electric core provided in Embodiment 1, such as figure 2 As shown, the difference is that: a partition 4 is also included, and the partition 4 is arranged in the installation cavity to separate the cooling cavity 13 and the working cavity 14, the cooling cavity 13 accommodates the cooling medium layer 17, and the working cavity Cavity 14 houses an electrolytic medium layer 18 . By setting the partition plate 4, the installation cavity is divided into a cooling cavity 13 and a working cavity 14, so that the cooling medium layer 17 and the electrolytic medium layer 18 are not in contact with each other, so that the selection range of the materials for the cooling medium layer 17 and the electrolytic medium layer 18 get bigger. That is, the cooling medium layer 17 and the electrolytic medium layer 18 of miscibility can be selected, and the cooling medium layer 17 and the electrolytic medium layer 18 of immi...

Embodiment 3

[0073] This embodiment provides a battery module, including the battery cell provided in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a battery cell and a battery module. The battery cell comprises a shell, a cover plate, a roll core and a connecting piece, wherein the shell is provided with an opening; the cover plate covers the opening of the shell, the cover plate and the shell form a mounting cavity, and a cooling medium layer and an electrolytic medium layer which are arranged in a layered manner are arranged in the mounting cavity; the roll core is accommodated in the working cavity, and at least part of the roll core is arranged in the electrolytic dielectric layer; the connecting piece is arranged in the mounting cavity, one end of the connecting piece is connected with the roll core, the other end of the connecting piece extends towards the direction of the cover plate, and at least part of the connecting piece is arranged in the cooling medium layer. When the battery cell is used, the connecting piece generates heat, and the cooling medium layer can quickly dissipate heat of the connecting piece wrapped by the cooling medium layer, so that heat accumulation on the connecting piece in a large-current quick charging process is reduced, the thermal safety risk of the battery cell caused by high temperature is reduced, and the practicability of the battery cell is improved.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a battery cell and a battery module. Background technique [0002] Lithium-ion battery is a high-tech product, and it is also a new type of high-capacity, long-life and environmentally friendly battery with excellent product performance. Compared with nickel-cadmium and nickel-metal hydride batteries, lithium-ion batteries have many advantages such as high voltage, large specific energy, long cycle life, good safety performance, small white discharge, no memory effect, fast charge and discharge, and wide operating temperature range. Therefore, lithium-ion batteries are high-quality power sources for new energy electric vehicles. [0003] The operating current generated by current lithium-ion batteries during charging and discharging is usually as high as hundreds of amps, and the large amount of Joule heat generated will cause the temperature of the connectors and wind...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/654H01M10/6551H01M10/6567H01M10/658H01M50/30H01M10/058H01M10/052H01M50/258
CPCH01M10/613H01M10/654H01M10/6551H01M10/6567H01M10/658H01M50/30H01M10/058H01M10/052H01M50/258Y02E60/10Y02P70/50
Inventor 巨彦铭孟焕平邱志军徐中领张耀
Owner SUNWODA ELECTRIC VEHICLE BATTERY CO LTD