Explosion-proof assembly process for lithium battery of low-speed electric vehicle
An assembly process and electric vehicle technology, applied in the manufacture of battery components, non-aqueous electrolyte batteries, electrolyte batteries, etc., can solve the problems of simple and rough, large stock, and high safety hazards
Pending Publication Date: 2022-01-04
黄文革
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Problems solved by technology
[0002] At present, in the assembly process of lithium batteries for low-speed electric vehicles, the battery cells are connected in series and parallel to form a group, and then put into a closed shell box to be the finished product; the existing technology is simple and crude, and its safety is complete. Relying on the quality of the battery cells and the protection board, it is impossible to avoid thermal runaway and the resulting deflagration. The greater the stock of products with this assembly process, the higher the safety hazard
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Embodiment Construction
[0010] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0011] Low-speed electric vehicle lithium battery explosion-proof assembly process, the specific steps are as follows:
[0012] 1) Cell selection: Select a qualified cell with a capacity difference not exceeding 2 / 100 of the nominal capacity of the cell, a static voltage difference not exceeding 0.02 volts, and an internal resistance lower than 0.5 milliohms;
[0013] 2) Assembling: Place the insulating and heat-insulating boards to a good size, place and reinforce them in sequence with the bat...
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Abstract
The invention discloses an explosion-proof assembly process for a lithium battery of a low-speed electric vehicle. The explosion-proof assembly process comprises the following specific steps: 1) selecting a battery cell; (2) assembling: sequentially placing and reinforcing the insulating and heat-insulating plate and the battery cell, connecting a connecting wire and a protective plate flat cable, gluing and sealing each seam, covering a cover with a safety valve, standing until the glue is dried, and enabling the insulating and heat-insulating plate and the battery cell to jointly form an inner box of the battery pack; and (3) boxing: putting the assembled battery pack inner box into a shell box body, covering a box cover with a safety valve, and sealing to finish the assembly. According to the lithium battery assembly process disclosed by the invention, the battery cells are isolated by insulating high-temperature-resistant plates; each battery cell is provided with an independent chamber; each battery cell bin is provided with a certain pressure relief buffer space; each battery cell bin is provided with a pressure relief explosion relief valve; a pressure relief buffer space is reserved between the battery pack consisting of a plurality of independent battery cell bins and the shell box; a pressure relief explosion relief valve is arranged on the shell box body; and thermal runaway of the battery and explosion combustion caused by thermal runaway can be effectively avoided.
Description
technical field [0001] The invention relates to the technical field of lithium batteries, in particular to an explosion-proof assembly process for lithium batteries of low-speed electric vehicles. Background technique [0002] At present, in the assembly process of lithium batteries for low-speed electric vehicles, the battery cells are connected in series and parallel to form a group, and then put into a closed shell box to be the finished product; the existing technology is simple and crude, and its safety is complete. Relying on the quality of the battery cells and the protection board, it is impossible to avoid thermal runaway and the resulting deflagration. The greater the stock of products of this assembly process, the higher the safety hazard. Contents of the invention [0003] The object of the present invention is to provide an explosion-proof assembly process for low-speed electric vehicle lithium batteries. The assembly process isolates each cell with an insulat...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01M10/058H01M10/0525H01M10/625H01M10/658H01M50/244H01M50/249H01M50/30
CPCH01M10/058H01M10/0525H01M10/625H01M10/658H01M50/244H01M50/249H01M50/30H01M2220/20Y02E60/10Y02P70/50
Inventor 黄文革
Owner 黄文革