A battery, a battery module, a battery pack and an automobile

A battery and core pack technology, applied in battery pack components, secondary batteries, battery caps/end caps, etc., can solve the problems of too many sampling lines, reduce the energy density of battery packs, and be prone to short circuits, and reduce the number of casings. And the effect of external installation structure, improving space utilization and reducing internal resistance of connection

Active Publication Date: 2022-01-07
BYD CO LTD
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Problems solved by technology

The disadvantage of this sampling method is that, on the one hand, the sampling temperature is not enough to fit the inside of the single battery, and there will be accuracy errors. After the sampling lines are overlapped, short circuits are prone to occur. After the number of battery cells increases, the sampling lines are more complicated and costly. It is prone to safety risks; on the other hand, the sampling line and PCB board occupy a large space outside the battery cell, which significantly reduces the energy density of the battery pack

Method used

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  • A battery, a battery module, a battery pack and an automobile
  • A battery, a battery module, a battery pack and an automobile
  • A battery, a battery module, a battery pack and an automobile

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Embodiment Construction

[0044] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise.

[0045] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0046] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0047] In all examples shown and discussed herein, any specific values ​​should be construed as illustrative only and not limiting. Accordingly, other instances of the exemplary embodiment may hav...

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Abstract

The invention provides a battery, a battery module, a battery pack and an automobile. The battery includes a pole core group, a PCB board, a cover plate and a casing, and a plurality of the pole core groups are sequentially connected in series along a first direction. The pole core group includes at least one pole core, and one side of the casing is opened to form a cavity, the casing cooperates with the cover plate and encapsulates the plurality of pole core groups in the cavity, and the PCB The board is arranged in the casing, and the chip is arranged on the PCB. The method of connecting multiple pole core groups in series greatly reduces the design structure of the battery pack and the arrangement of the batteries, effectively utilizes the internal space of the battery pack, and improves the space utilization rate. Moreover, the arrangement of the PCB board makes the structure of the battery more compact, saves space, and improves the volumetric energy density. The battery module assembly process is less, the cost is lower, the energy density of the battery pack is higher, the endurance of the vehicle is higher, and the cost is lower.

Description

technical field [0001] The present invention relates to the technical field of batteries, and in particular, the present invention relates to a battery, a battery module, a battery pack and an automobile. Background technique [0002] With the continuous popularization of new energy vehicles, the requirements for the use of power batteries are becoming higher and higher. In particular, with the continuous improvement of users' requirements for the mileage of new energy vehicles, the overall capacity of battery packs used in new energy vehicles needs to be continuously improved; at the same time, during the use of power battery packs, the internal resistance causes Internal friction and fever are required to be minimized. [0003] Generally speaking, there is only one pole core or multiple pole cores in a parallel state in the casing of the battery, and the voltage of the whole battery cannot be improved by including a single pole core or multiple parallel pole cores. For e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/204H01M50/249H01M50/271H01M50/51H01M50/519H01M10/42H01M10/48
CPCH01M10/425H01M10/486Y02E60/10
Inventor 宋如周燕飞张中林刘彦初周贵树
Owner BYD CO LTD
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