Battery pack with high-current charging and discharging function
A battery pack, charging and discharging technology, applied to battery pack parts, secondary batteries, circuits, etc., can solve the problems of battery life decline, convenience impact, battery pack can not be used, etc., to improve cycle life and strength and safety, excellent heat dissipation effect
Inactive Publication Date: 2016-12-07
SUZHOU NEW EASY ELECTRONICS
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Problems solved by technology
In the field of power battery work, due to the frequent need for high current charging and discharging, the lithium battery itself will have relatively obvious heat generation. The battery pack composed of many lithium batteries will accumulate heat, and the inside of the battery pack will produce an obvious high temperature environment, which is harmful to the lithium battery. Life will have an irreversible impact, and soon the life of some batteries will be greatly reduced, making the entire battery pack unusable. At the same time, due to the continuous rise in temperature, the electrolyte inside the lithium battery will decompose and overflow due to pyrolysis, which is prone to spontaneous combustion and even explosion. as a result of
In order to protect the lithium battery, the existing technology generally connects more lithium batteries in parallel to share the charging and discharging current to reduce heat generation, but connecting more lithium batteries in parallel will cause the battery pack to become larger and heavier, which is harmful to convenience In some special areas, such as high-power wireless pistol drills, the size of the battery pack is fixed, and this method cannot be used
Method used
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[0022] Such as Figure 1-2 As shown, a battery pack for charging and discharging a large current includes an upper cover 1, a lower cover 2 and a battery pack. One of the upper cover 1 or the lower cover 2 is made of aluminum alloy. A battery array, the battery is a ternary lithium battery or a lithium iron phosphate battery with a large discharge capacity. Due to the consideration of heat dissipation, the shape of the battery is particularly important, and the heat dissipation capacity is positively related to the outer surface area of the battery. A cylindrical battery is preferred. The battery array is embedded on the support 11 provided with the battery slot 12. The support 11 is a thermally conductive material. Aluminum alloy is preferred. Aluminum alloy has a lighter weight and can provide excellent thermal conductivity and strength. The bracket 11 of aluminum alloy is in contact with the upper cover 1 and the lower cover 2. Since one of the upper cover 1 and the lower...
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The invention discloses a battery pack with a high-current charging and discharging function. The battery pack comprises an upper cover, a lower cover and a battery pack, wherein the battery pack comprises a plurality of battery arrays which are formed through series-parallel connection; the battery arrays are embedded in a bracket with battery groove holes; the groove holes are matched with the peripheral shapes of batteries; holes are formed in the bracket; and the holes extend from one end of the bracket to the other end in a direction parallel to the axial direction of the groove holes. According to the battery pack with the high-current charging and discharging function provided by the invention, due to a heat conducting bracket matched with a lithium battery, the heat generated by the lithium battery can be transferred to the periphery of the battery pack in time to ensure the normal internal temperature of the battery pack, thereby realizing the safety of high-current charging and discharging, improving the strength of the battery pack, and prolonging the service life of the battery pack at the same time.
Description
technical field [0001] The invention relates to a battery pack, in particular to a battery pack for charging and discharging with a large current, and belongs to the technical field of batteries. Background technique [0002] Due to the advantages of small size, light weight, high voltage, high power, less self-discharge and high-rate discharge, lithium battery packs have gradually become the mainstream of power batteries. In the field of power battery work, due to the frequent need for high current charging and discharging, the lithium battery itself will have relatively obvious heat generation. The battery pack composed of many lithium batteries will accumulate heat, and the inside of the battery pack will produce an obvious high temperature environment, which is harmful to the lithium battery. Life will have an irreversible impact, and soon the life of some batteries will be greatly reduced, making the entire battery pack unusable. At the same time, due to the continuous ...
Claims
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IPC IPC(8): H01M2/10H01M10/613H01M10/6235
CPCH01M10/613H01M10/6235H01M50/213Y02E60/10
Inventor 秦晶
Owner SUZHOU NEW EASY ELECTRONICS