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Battery module

A technology of battery modules and single cells, which is applied to battery components, secondary batteries, circuits, etc., can solve the problems of cycle life attenuation, high temperature sensitivity, uneven temperature, etc., to prevent over-temperature High, high energy density, the effect of ensuring temperature consistency

Inactive Publication Date: 2018-02-09
SHENZHEN ANDING NEW ENERGY TECH DEV CO LTD
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AI Technical Summary

Problems solved by technology

[0002] Although the overall performance of lithium-ion batteries has certain advantages over other types of batteries, its performance is highly sensitive to temperature, and its charge and discharge capacity, cycle life, and safety are directly affected by temperature.
When the working environment temperature of the lithium-ion battery is high, the chemical activity of the battery material will increase, so the discharge capacity of the battery can be improved to a certain extent, but at the same time, it will also lead to faster aging of the battery material, serious polarization of the battery, and repeated use. The lifespan decays rapidly, and if the temperature is too high, the battery may even spontaneously ignite, endangering the safety of the vehicle and its occupants
When the battery pack is working, the temperature inhomogeneity between different single cells makes the performance of different single cells different, which further leads to premature failure of the battery module

Method used

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Embodiment Construction

[0025] In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0026] see figure 1 and figure 2 , the present invention provides a battery module 100 , including a plurality of unit cells 10 , a storage box 20 for accommodating the plurality of unit cells 10 , a battery holder 30 and a base 40 .

[0027] see image 3 , the number of the single cells 10 is multiple. In this embodiment, the single battery 10 is a cylindrical battery, and in other embodiments, the single battery 10 may be a square battery or a pouch battery. Each single battery 10 includes a positive electrode 101 and a negative electrode 10...

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Abstract

Disclosed is a battery module. The battery module comprises a plurality of single batteries, an accommodating box used for accommodating the multiple single batteries, a battery bracket and a base; the accommodating box comprises a fixed frame and an accommodating body arranged in the fixed frame; a plurality of accommodating holes are formed in the accommodating body; the battery bracket is arranged on the accommodating box; the battery bracket is fixedly connected with the fixed frame; a plurality of accommodating grooves are formed in one side, close to the accommodating box, of the batterybracket; each accommodating groove is matched with one corresponding accommodating hole for accommodating the corresponding single battery; the base is arranged at the bottom of the accommodating box; the base comprises a base plate and a cover plate for covering the base plate; the base plate and the cover plate are fixedly connected to form a circulation cavity; and the circulation cavity is used for circulation of a coolant liquid. By virtue of the battery module, temperature consistency of multiple single batteries can be ensured, so that overhigh temperature of the battery module can beprevented.

Description

【Technical field】 [0001] The invention relates to the technical field of power batteries, in particular to a battery module. 【Background technique】 [0002] Although the overall performance of lithium-ion batteries has certain advantages over other types of batteries, its performance is highly sensitive to temperature, and its charge and discharge capacity, cycle life, and safety are directly affected by temperature. When the working environment temperature of the lithium-ion battery is high, the chemical activity of the battery material will increase, so the discharge capacity of the battery can be improved to a certain extent, but at the same time, it will also lead to faster aging of the battery material, serious polarization of the battery, and repeated use. The lifespan decays rapidly, and if the temperature is too high, the battery may even spontaneously ignite, endangering the safety of the vehicle and its occupants. When the battery pack is working, the temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M10/613H01M10/6556H01M10/6567H01M10/6552H01M50/20
CPCH01M10/613H01M10/6552H01M10/6556H01M10/6567H01M50/20Y02E60/10
Inventor 马斌王敬波段桂林曹海云
Owner SHENZHEN ANDING NEW ENERGY TECH DEV CO LTD
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