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Battery system formed by directly performing series-parallel connection on unit batteries

A single battery and battery system technology, applied in the direction of battery components, circuits, electrical components, etc., can solve the problems of non-removable and replaceable, unstable structure, poor reliability, etc., to avoid destructive and ensure good contact , to avoid the effect of poor reliability

Inactive Publication Date: 2012-07-18
宣城普益力能新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve a series of problems in the prior art, such as poor reliability, strong destructiveness, non-disassembly and replacement, and unstable structure, in the series-parallel connection of battery packs, and to provide a series-parallel battery that can directly use single batteries. battery system

Method used

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  • Battery system formed by directly performing series-parallel connection on unit batteries
  • Battery system formed by directly performing series-parallel connection on unit batteries
  • Battery system formed by directly performing series-parallel connection on unit batteries

Examples

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Embodiment 1

[0034] Such as figure 1 , 2As shown, a battery system that can directly use single cells connected in series and parallel, includes several single cells 1, positive pole plates 2, several intermediate pole plates 3 and negative pole plates 4, the positive pole plates 2, several intermediate pole plates A number of single cells 1 on the pole plate 3 and the negative pole plate 4 form a parallel battery pack respectively, and the battery system is formed in series between each parallel battery pack; the single battery 1 includes a cap 5, a casing 6, an upper gasket 7. Basic components such as winding core 8, lower gasket 9, negative pole lug 10, positive pole lug 12, first insulating gasket 13, etc., also include positive pole terminal 14, negative pole terminal 11; the positive and negative pole terminals 14, 11 is an annular columnar metal protruding from the bottom, the outer diameter of the annular columnar part of the positive terminal 14 is equal to the inner diameter of ...

Embodiment 2

[0047] This embodiment is the same as Embodiment 1, except that the positive pole plate 2, the middle pole plate 3, and the negative pole plate 4 all use PCB boards, and the upper and lower insulating layers in the PCB board correspond to the positive pole plates 2, the positive upper and lower insulating layers 22, 23, the negative upper and lower insulating layers 28, 27 of the negative plate 4, and the intermediate insulating layer 25 on the intermediate plate 3, and the metal copper layers in the PCB board correspond to the positive electrodes respectively. Positive and negative busbars 21 and 29 on the pole plate 2 , the negative pole plate 4 and the equipotential layer 24 on the intermediate pole plate 3 . In this way, the production process of each pole plate is simplified, and the production cost of the battery system is better lowered.

Embodiment 3

[0049] This embodiment is the same as embodiment 1, the difference is that, as Figure 7 As shown, a hole on the positive electrode plate 2 corresponding to the middle position of the battery system, several intermediate electrode plates 3 and the negative electrode plate 4 is not installed with a single battery 1, but is penetrated by a screw rod 33. The screw 33 is fastened on the positive electrode plate 2 through the first nut 34, and a second insulating gasket is provided between the first nut 34 and the positive electrode plate 2, and between the bottom of the screw 33 and the negative electrode plate 4 35 and reinforcing plate 36. In this embodiment, the battery system is fastened inwardly from the upper and lower ends by the screw and the reinforcing plate, further ensuring good contact of various parts of the entire battery system and structural reliability of the entire system.

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Abstract

The invention discloses a battery system which can be formed by directly performing series-parallel connection on unit batteries. A plurality of unit batteries on a positive plate, a negative plate and a plurality of intermediate polar plates respectively form a battery in quantity, and all batteries in quantity are connected in series to form the battery system; the positive terminal and the negative terminal of each unit battery are circular ring-shaped columnar metals of which the bottom parts protrude outwards; the external diameter of the circular ring-shaped columnar part of each positive terminal is equal to the internal diameter of the circular ring-shaped columnar part of each negative terminal; the outer surface of the circular ring-shaped columnar part of each positive terminal is provided with threads; the outwards protruded part of the bottom part of the circular ring-shaped columnar part of each positive terminal is fixedly arranged on a nut cap; the inner surface of the circular ring-shaped columnar part of each negative terminal is provided with threads; and the outwards protruded part of the bottom part of the circular ring-shaped columnar part of each negative terminal is fixedly arranged at the bottom part of each unit battery. By adopting the technical scheme, the unit batteries with the structures can be directly connected in series and in parallel; spot welding or laser welding does not need to be performed on finished-product batteries according to a traditional method, and thereby, the damage and the uncertainty possibly caused to the batteries by the spot welding and the laser welding are completely eliminated. Moreover, the detachability and the replaceability of the battery system are thoroughly realized.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery system that can directly use single batteries connected in series and in parallel. Background technique [0002] At present, the government is vigorously supporting the new energy industry, and it is becoming a fashion to replace high-pollution and low-efficiency coal and oil with efficient and clean new energy. Secondary batteries that can be recharged and discharged cyclically are becoming the leader, among which nickel-metal hydride and lithium-ion batteries are very popular. At present, many companies are developing and producing electric vehicles that use lithium-ion batteries instead of gasoline. It is an important direction to connect small single batteries in series and parallel to form a large battery pack; because the voltage of single batteries is generally not more than 4V, they must be used in series; moreover, the larger the capacity of single batteries, the wors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/30H01M2/10
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 李义
Owner 宣城普益力能新能源科技有限公司
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