Battery pack

A technology for battery packs and battery packs, applied in battery overcharge protection, battery load switching, battery circuit devices, etc., can solve the problems of increasing the overall manufacturing cost of the battery management system, causing fires, etc., so as to improve the safety of use and protect lithium Batteries, the effect of preventing overcharge and overdischarge

Pending Publication Date: 2018-03-23
威艾能源(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the overcurrent and overvoltage protection is not well managed, it will often lead to fire
Additionally, adding electronic switch costs to the system typically increases the overall manufacturing cost of the battery management system

Method used

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Experimental program
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Embodiment 1

[0039] figure 1 and figure 2 A schematic structural view and an enlarged partial structural view of the battery pack of the battery pack of the present embodiment are given respectively, image 3 It is a schematic diagram of the battery pack connection and battery management of the battery pack of the present invention. combined reference Figure 1~Figure 3 , a battery pack, including battery packs 1 arranged in layers and metal sheets 2 for heat insulation and fire prevention. In this embodiment, the battery pack is set as battery pack A, battery pack B, battery pack C and battery pack D connected together in series, wherein battery pack A and battery pack B are located on the upper layer, and battery pack C and battery pack D are located on the upper layer. In the lower layer, the battery packs can be connected in series through electrode connectors, while the batteries inside each battery pack are connected in parallel. There are 4 battery packs in this battery pack, a...

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PUM

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Abstract

A battery pack provided by the present invention comprises a plurality of battery sets which are in series connection, heat-insulated and fireproof sheet metals, an active equalization system in corresponding arrangement with each battery set, an overcharging and overdischarging protection switch and a total controller. The plurality of battery sets are in layered and superposed arrangement, the sheet metals are arranged between the adjacent two layers of battery sets and are attached to and connected with the layers of battery sets to which the cathodes face, the intumescence fire-retardant coatings are coated on the surfaces facing the cathodes of the battery sets or are coated on both the surfaces, and the total controller controls the active equalization systems and the overcharging and overdischarging protection switch. The active equalization systems of the battery pack enable the voltage difference of the battery sets during the charging and discharging processes to be reduced effectively, thereby preventing the battery pack from being overcharged and overdischarged. Meanwhile, no electrical / electronic switch is used in the battery pack to control a current loop, thereby eliminating the potential safety hazards brought by that a current flows through the electrical / electronic switch to generate the heat.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a battery pack. Background technique [0002] Lithium-ion batteries have the advantages of good durability, long cycle life and non-toxic substances, making them widely used in clean energy alternative varieties. As the price of lithium batteries has fallen, lithium-ion batteries have begun to gradually replace lead-acid batteries in electric bicycles and golf carts. [0003] Li-ion batteries generally include an anode, cathode, separator and electrolyte. Modern lithium-ion batteries typically use graphite materials as the anode and transition metal oxides as the cathode. During the discharge of the charged charge, lithium ions are transported between the cathode and anode. Generally, the voltage of a single lithium battery is between 2V and 5V. Therefore, to achieve the target voltage and capacity, multiple batteries need to be used in series and in parallel. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0016H02J7/00302H02J7/00306H02J7/0036H02J7/0068H02J2007/0067
Inventor 袁石
Owner 威艾能源(杭州)有限公司
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