Battery modules for power battery packs
A technology for power battery packs and battery modules, applied to battery pack components, batteries, secondary batteries, etc., can solve problems such as uncharging, low temperature, poor heat dissipation of power batteries, etc., and achieve good performance, optimal performance, Improve the effect of not being able to charge and discharge
Active Publication Date: 2018-02-13
兰州广通新能源汽车有限公司 +1
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Problems solved by technology
[0004] In view of the above-mentioned current state of the art, the technical problem to be solved by the present invention is to provide a battery module of a power battery pack to solve the problem of poor heat dissipation or low temperature of power batteries used in electric vehicles, electric buses and electric buses. The problem caused by the inability to charge and discharge
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[0031] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0032] Such as Figure 1-3 As shown, the power battery pack 20 in one of the embodiments of the present invention includes several battery modules 10, a front panel 21, a back panel 22, a top panel 23, a forced ventilation heat dissipation and battery pack heating device, a total positive metal plate 27 and a total negative electrode The metal plate 28 and several battery modules 10 are stacked together and fixed by three metal straps 30 .
[0033] Such as Figure 4-9 As shown, the battery module 10 is mainly composed of a casing assembly 11, a soft-pack lithium-ion battery 12 and two heat exchange systems 16, wherein the casing assembly 11 is fastened together by a first casing 111 and a second casing 112, and p...
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A battery module of a power battery pack, comprising: a housing assembly, the housing assembly having a battery accommodation chamber and an air duct unit; a soft-packaged lithium-ion battery, the soft-package lithium-ion battery is installed in the battery accommodation chamber of the housing assembly, and the soft-package lithium-ion battery Positive and negative pole lugs are respectively welded with positive and negative drainage metal strips, and the positive and negative drainage metal strips are exposed to the shell assembly; heat exchange system, the heat exchange system includes heat collecting plates, heat pipes and fins, and the heat collecting plates are mounted on the shell assembly. In the battery containing chamber, and closely adhered to the surface of the soft-packed lithium-ion battery, the heat pipe is fixed on the heat collecting plate, and the heat pipe has a first section extending beyond the heat collecting plate, the fins are installed on the first section, and the fins The slices are located in the air duct unit. The battery module of the power battery pack of the present invention solves the problem that the current power batteries used in electric vehicles, electric buses and electric buses cannot be charged or discharged due to poor heat dissipation or low temperature.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a battery module of a power battery pack. Background technique [0002] The battery packs of existing power batteries basically use single cells to be directly connected, or add a protective shell. The heat dissipation rate depends on the heat conduction rate of the battery's protective material. If a pure plastic battery shell is used, it will be difficult for the heat to dissipate from the battery body At the same time, the temperature of the tabs of the battery rises sharply due to the increase of the charge and discharge rate, causing the adhesive plastic between the tabs of the battery and the aluminum-plastic film of the battery to melt, causing the battery to leak, and the risk of battery failure or fire. Using modular batteries with metal casings, the weight of the battery box will be very heavy, which does not have the advantages of practical use, and the metal casing ...
Claims
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IPC IPC(8): H01M2/10H01M2/26H01M10/613H01M10/615H01M10/625H01M10/635H01M10/6551H01M10/6552H01M10/6554H01M10/6563H01M50/211H01M50/249H01M50/298H01M50/536
CPCH01M2220/20H01M50/20H01M50/531Y02E60/10
Inventor 徐德雷蔡惠群李海军詹世英魏银仓
Owner 兰州广通新能源汽车有限公司