Connection method for electrical cores in square storage battery pack and square storage battery pack
A battery pack and connection method technology, applied in the battery pack components, connections, circuits, etc., can solve the problems of reduced sealing performance of the battery pack, affecting the reliability of the battery pack, shortening the life of the battery pack, etc., to achieve improved power performance, excellent Conductivity and leakage prevention effect
Inactive Publication Date: 2012-03-07
湖南科霸汽车动力电池有限责任公司
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Problems solved by technology
At present, when connecting two batteries, two connectors at the upper and lower ends are used, and they are the same type of connector. For example, a pair of connectors and a pair of O-rings form a connection between a pair of adjacent batteries. The square shape of this connection method The internal impedance of the battery pack is high, and the power of the battery pack is low; and the position of the lower connection hole in the current square battery pack is at the bottom of the separator, which reduces the sealing performance of the battery pack in contact with the electrolyte and shortens the The life of the battery pack affects the reliability of the battery pack
Method used
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Embodiment 1
[0021] The schematic diagram of the appearance of the square Ni-MH storage battery pack is as follows: figure 1 As shown, the anatomical diagram of its internal structure is shown in figure 2 shown. The battery includes a rectangular plastic shell 1, a sealing cover 2, six battery cells 3 and a busbar 4 built in the shell, and a separator 5 is used to separate two adjacent battery cells and form separate cell chambers. Electrolyte is injected into the room, and the cells located at both ends are separated from the shell by separators. The cells are composed of positive plates, diaphragms, and negative plates alternately stacked; there is a connection hole at the upper and lower ends of each separator 6 and 7, the position of the lower connection hole 7 is 1 / 3 of the total height of the separator at the bottom of the battery case; the upper and lower connectors of different shapes are respectively installed at the positions of the upper and lower connection holes on the separ...
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The invention provides a connection method for electrical cores in a square storage battery pack and a square storage battery pack. According to the invention, the upper end and the lower end of each separator plate are provided with a connection hole respectively, and the lower connection hole is located at a position where the distance between the lower connection hole and a bottom separator plate of a battery case is 1 / 3 to 1 / 2 of the total height of the separator plate; an upper connector and a lower connector of different shape are installed respectively corresponding to the position of the upper connection hole and the lower connection hole so as to connect junction sheets of electrical cores, thereby realizing internal connection of the electrical cores; the upper and the lower connection holes in separator plates at two ends of the battery case are connected with a strip junction sheet, the central part of the strip junction sheet is provided with threaded terminal posts, and two adjacent square storage battery packs are conductively connected through the threaded terminal posts. Continuous excellent conductivity among the electrical cores of the square storage battery pack provided in the invention is obtained, internal resistance is further reduced, and the power of the storage battery pack is improved; the special position of the lower connector enables leakage caused by mutual flowing of electrolytes in electrical cores of each unit to be effectively prevented and reliability of the storage battery pack to be enhanced.
Description
technical field [0001] The invention relates to a connection method of a storage battery pack and internal components, in particular to a connection method of an internal electric core of a square storage battery pack and the square storage battery pack. Background technique [0002] In order to meet the rated power requirements of the battery, it is usually necessary to connect multiple cells together to form a battery pack, and then connect the battery packs to form a battery pack module. The contact resistance between adjacent cells in a battery pack is an important internal impedance source of the battery pack. High internal impedance means high energy consumption and heat dissipation problems, which will affect the power performance of the battery. At present, when connecting two batteries, two connectors at the upper and lower ends are used, and they are the same type of connector. For example, a pair of connectors and a pair of O-rings form a connection between a pair...
Claims
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IPC IPC(8): H01M2/26H01M2/18H01M2/32H01R25/14H01M50/571
CPCY02E60/10
Inventor 石建珍刘卫军周旺发黄庆华关崚
Owner 湖南科霸汽车动力电池有限责任公司