Single battery, power battery pack and vehicle
A single battery and casing technology, which is applied in the field of vehicles, can solve the problems of failure to work normally, high use cost, and high maintenance cost, and achieve the effects of shortening the current conduction path, improving the overcurrent capacity, and reducing internal resistance
Active Publication Date: 2020-12-22
BYD CO LTD
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Problems solved by technology
[0002] Most of the current single batteries are equipped with a positive electrode terminal and a negative electrode terminal. In this way, when one electrode terminal of the single battery fails, the entire single battery is paralyzed and cannot work normally, and the battery needs to be replaced again, which is expensive. In addition, the batteries are bonded with structural glue, which is not easy to disassemble, resulting in high maintenance costs, and there is room for improvement
Method used
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[0027] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application.
[0028] Refer below Figure 1-Figure 2 Describe the single battery 100 according to the embodiment of the present application, the single battery 100 has at least four electrode terminals, and when the four electrode terminals are all electrically connected to the pole core, the current conduction path of the single battery 100 can be shortened, Reduce the internal resistance of the single battery 100, improve the overcurrent capability, and when two of the four electrode terminals are turned on, the other two electrode termi...
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The invention discloses a single battery, a power battery pack and a vehicle. The single battery comprises a shell and a pole core positioned in the shell, wherein the shell is provided with a plurality of surfaces, at least two surfaces are provided with electrode terminals which are electrically connected with the pole cores and extend out of the shell to be used for leading out current, and thenumber of the electrode terminals on each surface is at least two; tabs are arranged on the pole cores, and the electrode terminals are electrically connected with the pole cores through the tabs, wherein S / V is more than or equal to 0.15 and less than or equal to 0.2, S is the surface area of the single battery, and V is the volume of the single battery. According to the single battery providedby the invention, when the four electrode terminals are electrically connected with the pole cores, the current conduction path of the single battery can be shortened, the internal resistance of the single battery is reduced, and the over-current capability is improved.
Description
technical field [0001] The present application relates to the technical field of vehicle manufacturing, and in particular to a single battery, a power battery pack with the single battery, and a vehicle with the power battery pack. Background technique [0002] Most of the current single batteries are equipped with a positive electrode terminal and a negative electrode terminal. In this way, when one electrode terminal of the single battery fails, the entire single battery is paralyzed and cannot work normally, and the battery needs to be replaced again, which is expensive. In addition, the batteries are bonded with structural glue, which is not easy to disassemble, resulting in high maintenance costs, and there is room for improvement. Contents of the invention [0003] This application aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present application is to propose a single battery, which can pass through the ...
Claims
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IPC IPC(8): H01M2/30H01M2/20H01M2/34
CPCH01M2220/20Y02E60/10
Inventor 江文锋何科峰王信月马宁朱燕
Owner BYD CO LTD