Integrated cylindrical power battery module and manufacturing method therefor

Abstract

The invention relates to an integrated cylindrical power battery module and manufacturing method therefor, and belongs to the field of a power battery. The cylindrical batteries provided by the invention are placed in mounting holes which are formed in a first shell and a second shell in a one-to-one correspondence manner; the two poles of the cylindrical batteries are attached to a heat management module through heat conducting glue; the cylindrical battery is light in weight, low in cost, and high in sealing property and heat dissipation uniformity; temperature collection modules are arranged on the cylindrical surfaces and two polar columns of the cylindrical batteries, and are jointly matched with the heat management module, so that the cylindrical batteries achieve a higher working temperature; conical guiding columns are arranged around the peripheries of the mounting holes in a surrounding manner; on one hand, the conical guiding columns enable the batteries to be more rapid and convenient in entering the corresponding shells, and the batteries are not required to be fully matched with and aligned to the corresponding mounting holes by only enabling the batteries to follow the conical guiding columns to be guided into the corresponding mounting holes, thereby realizing a lower error rate and accelerating the mounting speed; and on the other hand, the defect of abrasion and crack of insulating films on the outer surfaces of the cylindrical batteries in mounting in the mounting holes can be overcome, and the caused degradation of the insulating property of the batteries can be avoided.

Description

technical field [0001] The invention belongs to the field of power batteries, and in particular relates to an integrated cylindrical power battery module and a manufacturing method thereof. Background technique [0002] At present, the production of power battery modules is mainly completed by semi-automatic and manual. The disadvantage is that the production efficiency is low, and the product quality and consistency cannot be guaranteed. In the prior art, the power battery is fixed by an integral potting heat-conducting adhesive process, which increases the weight of the power battery pack, and when a battery in the power battery pack fails, it is very difficult to disassemble and easily damage other intact batteries; The battery has reached the end of its service life according to the national standard. When it is removed from the new energy vehicle, it still has a considerable capacity and a relatively wide space for use, so it can also be used for secondary use, and the ...

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Problems solved by technology

[0002] At present, the production of power battery modules is mainly completed by semi-automatic and manual. The disadvantage is that the production efficiency is low, and the product quality and consistency cannot be guaranteed.

In the prior art, the power battery is fixed by an integral potting heat-conducting adhesive process, which increases the weight of the power battery pack, and when a battery in the power battery pack fails, it is very difficult to disassemble and easily damage other intact batteries; The battery has reached the end of its service life according to the national standard. When it is removed from the new energy vehicle, it still has a considerable capacity and a relatively wide space for use, so it can also be used for secondary use, and the current market for secondary use of power batteries is very extensive. , but the existing process of using integral potting and sealing with heat-conducting adhesive has brought troubles to the secondary recycling of power batteries. For example, the performance of individual batteries is extremely poor and it is difficult to reuse them, and even when individual batteries are damaged, it is very difficult to disassemble these batteries.

[0003] In addition, the current module cooling schemes mainly include air cooling and liquid cooling. The disadvantage of air cooling is that the temperature difference between the air inlet and outlet is too large, the heat dissipation is uneven, the heat dissipation efficiency is poor, and the sealing performance is not good; the disadvantage of liquid cooling is that the system is complicated. , high price, high weight, and difficult to guarantee safety and reliability

When the battery module needs to be heated, it is necessary to redesign the heating system in the battery pack and re-add the heating system in the battery pack. On the one hand, the power battery system is too complicated. When designing the power battery, it is necessary to reserve space for the heating system and occupy the car. The limited space also brings inconvenience to the later maintenance; on the other hand, the installation work requires original factory operation to ensure quality and safety, and it is difficult to obtain quality assurance and claim settlement if problems occur after non-original factory installation

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