Lithium-ion power battery

A power battery and lithium-ion technology, applied in the field of lithium-ion power batteries, can solve problems such as low strength, easy deformation of threads, easy formation of slippery wires, and tripping, etc., to improve connection fastness, reduce internal resistance, and increase large Effect of current discharge performance

A power battery and lithium-ion technology, applied in the field of lithium-ion power batteries, can solve problems such as low strength, easy deformation of threads, easy formation of slippery wires, and tripping, etc., to improve connection fastness, reduce internal resistance, and increase large Effect of current discharge performance

CN103219488AInactive Publication Date: 2013-07-24武汉中原长江科技发展有限公司
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Effect test

Embodiment Construction

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] Such as Figure 8-Figure 9 As shown, the lithium ion power battery of the present invention includes a positive pole 1 , a negative pole 2 and a connecting sheet 3 . The positive pole 1 and the negative pole 2 are provided with fastening nuts 11 respectively, and the fastening nuts 11 are threadedly connected with the positive pole 1 and the negative pole 2 . The positive pole 1 and the negative pole 2 are respectively provided with a central hole 16 , and a rigid stud 10 is provided in the central hole 16 . The positive pole 1 and the negative pole 2 are respectively connected to the rigid stud 10 through connecting pins 12 . The positive pole 1 , the negative pole 2 and the rigid stud 10 are provided with con...

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Abstract

The invention relates to a lithium-ion power battery which comprises a positive post terminal (1), a negative post terminal (2) and connecting pieces (3). Tightening nuts (11) are arranged on the positive pole column (1) and the negative pole column (2) respectively; central holes (16) are formed in the positive pole column (1) and the negative pole column (2) respectively; rigid studs (10) are arranged in the central holes (16); the positive pole column (1) and the negative pole column (2) are respectively connected with the rigid studs (10) by connecting pins (12); compression nuts (4) are arranged on the rigid studs (10); and the connecting pieces (3) are pressed against and fixed on the tightening nuts (11) by the pressing nuts (4). The lithium-ion power battery improves the connection fastness between the positive and negative pole columns (1 and 2) and the connecting pieces (3), the internal resistance of the battery is reduced, and the heavy load discharge performance of the lithium-ion power battery is improved. Therefore, the whole battery is more suitable for vehicle-mounted vibrating occasions and the like.

Description

technical field [0001] The invention relates to the technical field of batteries, and more specifically relates to a lithium-ion power battery. Background technique [0002] At present, due to electrochemical corrosion factors, lithium-ion battery poles can only use aluminum and copper, or stainless steel or nickel with a potential between the two. Because the conductivity of stainless steel is too low, it is not suitable for poles. However, nickel has poor processing performance, high cost, and the potential is close to copper, so it is only suitable as a negative electrode. [0003] In the prior art, there are mainly the following ways to connect the pole piece and the pole inside the single battery: [0004] The first is as figure 1 As shown, the positive pole tab a and the negative pole tab b of the battery cell are directly welded to the positive pole 1 and the negative pole 2 respectively by ultrasonic welding. [0005] The second is as figure 2 As shown, the batt...

Claims

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Application Information

Patent Timeline
24 Jul 2013
Publication
CN103219488A
IPC
H01M2/34; H01M2/20
CPC
Y02E60/10
Inventors
刘守印; 宋强