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Battery module

A battery module and battery technology, applied in battery pack components, secondary batteries, circuits, etc., can solve problems such as uneven temperature of battery modules, and achieve prevention of battery explosion, uniform internal temperature, cycle performance and service life. boosted effect

Active Publication Date: 2015-10-21
DALIAN CBAK POWER BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to deal with the above-mentioned problems in the prior art, the present invention provides a battery module in order to improve the problem of uneven temperature inside the battery module

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A cylindrical steel shell 26650 battery with CID (current interrupt device, current cut-off device), VENT (pressure relief valve) and pressure relief hole structure is used as the battery for assembly, 18 of which form a parallel battery module, and 100 of them are connected in parallel The modules are connected in series to form a battery pack (or battery pack). The positive electrode of the battery is exposed under the mounting base. The sealing ring is stuck in the position of the battery rolling groove. The battery is assembled naked, that is, the battery is not wrapped with an insulating sleeve before assembly. The gap between the battery columns is filled with heat-conducting oil, and there are inlets and outlets on both sides of the bracket to insulate the heat-conducting liquid from circulating with the outside world. The first deflector and the second deflector have a trapezoidal convex structure. The flow plate is in elastic contact with the electrodes of the b...

Embodiment 2

[0049] The difference between this example and Example 1 is that the battery is wrapped with an insulating sleeve before assembly, and the lithium-ion battery pack prepared by this preparation process is counted as lithium-ion battery pack A2.

Embodiment 3

[0051] The only difference between this embodiment and Embodiment 1 is that the first deflector is a flat plate structure, and the pressure relief valve of the battery is covered by the first deflector. The lithium-ion battery pack prepared by this preparation process is counted as lithium-ion battery pack A3.

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Abstract

The invention belongs to the technical field of electric energy storage, and particularly relates to a battery module which includes a bracket, a first guide plate, a second guide plate and at least one battery, wherein each battery includes a first end surface provided with a first electrode, a second end surface provided with a second electrode, and a column body positioned between the first end surface and the second end surface; the bracket includes a closed side wall arranged in a surrounding manner, and a bottom wall provided with at least one mounting base; one upright battery is accommodated in each mounting base; the bottom of each mounting base is hollow to expose out the first electrode of the corresponding battery; the first guide plate is fixed at the bottom of the bracket and conducted with the first electrode of the at least one battery in a contact manner; the second guide plate is fixed at the top of the bracket and conducted with the second electrode of the at least one battery in a contact manner; insulating and heat conducting liquid is accommodated in the space between the bracket and the at least one battery, and is in contact with the column body of the at least one battery. The temperature control performance of the battery module is excellent.

Description

technical field [0001] The invention belongs to the technical field of electric energy storage, and in particular relates to a battery module. Background technique [0002] Lithium-ion batteries have been widely used in modern society due to their advantages such as high voltage, large specific energy, and long cycle life. In particular, the rise of the new energy industry brings more opportunities to the development of power lithium-ion batteries, but also poses more challenges to the application of lithium-ion batteries. [0003] At this stage, lithium-ion battery modules for new energy vehicles are mainly divided into several camps. From the structural division of application batteries, they can be divided into small cylindrical batteries, large square batteries, and flexible packaging batteries. Different battery structures show their own advantages and disadvantages in the process of preparing lithium-ion battery modules for vehicles. Taking cylindrical small batterie...

Claims

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Application Information

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IPC IPC(8): H01M10/617H01M10/625H01M10/653H01M10/6567H01M10/643H01M2/12H01M2/10H01M2/20H01M50/244H01M50/249H01M50/262H01M50/30H01M50/502
CPCH01M50/394H01M50/24H01M50/502Y02E60/10
Inventor 张亮田秀君魏东郭佳
Owner DALIAN CBAK POWER BATTERY CO LTD
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