Top cover structure of lithium ion battery and lithium ion battery
A lithium-ion battery and top cover technology, which is applied in secondary batteries, structural parts, battery pack parts, etc., can solve the problems of large temperature difference, the temperature control of lithium-ion batteries cannot meet the requirements, and the thermal conductivity of the diaphragm is poor, and the thermal conductivity is achieved. High, not easy to decompose, to achieve the effect of cooling
Pending Publication Date: 2019-05-10
WUHU ETC BATTERY LTD
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Problems solved by technology
However, since the interior of the lithium-ion battery is composed of a positive electrode, a separator, and a negative electrode sandwich structure, and the thermal conductivity of the separator is relatively poor, this results in a large temperature difference between the inner and outer layers of the lithium-ion battery and the large temperature difference between the lithium-ion battery cells in the module. The temperature control of lithium-ion batteries cannot meet the requirements
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[0023] In the following, referring to the drawings, through the description of the embodiments, the specific embodiments of the present invention such as the shape and structure of the various components involved, the mutual position and connection relationship between the various parts, the role and working principle of each part, etc. Detailed description:
[0024] As attached figure 1 -Attached Figure 4 As shown, the present invention is a lithium ion battery top cover structure. The lithium ion battery top cover structure includes a top cover body 1, one end of the top cover body 1 is provided with a positive pole main body 2, and the positive pole main body 2 is provided with a positive pole 3 , The positive column 3 is provided with a positive column phase change material part 4, the positive column 3 is also provided with a positive column sealing cover 5, the positive column 2 is connected with the positive current collector 7 of the battery cell 6 of the lithium battery...
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The invention provides a top cover structure of a lithium ion battery in the technical field of a new energy battery. A positive electrode post (3) is arranged in a positive electrode post main body (2) of the top cover structure of the lithium ion battery; a positive electrode post phase change material part (4) is arranged in the positive electrode post (3); the positive electrode post (2) is connected with a positive electrode current collecting body (7) of a battery cell (6) of the lithium ion battery; a negative electrode post main body (8) is arranged at the other end of the top cover body (1); a negative electrode post (9) is arranged in the negative electrode post main body (8); a negative electrode post phase change material part (10) is arranged in the negative electrode post (9); and the negative electrode post (9) is connected with a negative electrode current collecting body (12) of the battery cell (6). The top cover structure of the lithium ion battery provided by the invention has the advantages that when the lithium ion battery is normally used, the single lithium ion battery can realize self temperature regulation; the use temperature of the battery cell is effectively controlled; the service life of the battery cell is prolonged; and meanwhile, a good effect is achieved on inhibiting the thermal runaway of the lithium ion battery.
Description
Technical field [0001] The invention belongs to the technical field of new energy batteries, and more specifically, relates to a lithium ion battery top cover structure. The invention also relates to a lithium ion battery. Background technique [0002] As a kind of green battery, the service life of lithium-ion battery is paid more and more attention by more and more people. However, lithium-ion batteries are a metastable system and are very sensitive to temperature. Too high a temperature will significantly accelerate the attenuation of battery capacity, and too low a temperature will reduce the dynamic characteristics of the battery. At present, lithium-ion batteries generally dissipate heat or heat in the module design, and the surface of the lithium-ion battery is dissipated by water cooling pipes or air cooling or a combination method and a heating plate. However, because the interior of the lithium-ion battery is composed of a sandwich structure of positive electrode, sepa...
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Login to View More IPC IPC(8): H01M2/30H01M10/613H01M10/615H01M10/6553H01M10/659H01M2/04H01M10/0525H01M50/147H01M50/15H01M50/543H01M50/553
CPCY02E60/10
Inventor 刘艳绒路宝黄晓伟
Owner WUHU ETC BATTERY LTD