Modular lithium ion power battery

Abstract

The invention belongs to the technical field of lithium ion power batteries, and particularly relates to a modular lithium ion power battery which comprises a battery box and a battery pack, wherein the battery pack is arranged in the battery box and consists of a plurality of single lithium ion power batteries, as well as a power block and a sliding strip; a sliding groove is formed in one end of the battery box; a power block is connected into the sliding groove in a sliding manner; the power block can slide up and down along the sliding groove; a first spring is arranged in the sliding groove; and one end of the first spring is connected with the bottom wall of the sliding groove, and the other end is connected with the lower end of the power block. The power block slides up and down along the sliding groove and is matched with the sliding strip driving the baffle to rotate back and forth between the two groove walls of the ventilation groove, so that heat generated in the working process of the lithium ion power battery is dissipated, and then the wire harness aging speed of the lithium ion power battery is reduced, thus the service life of the modular lithium ion power battery is prolonged, and the use effect is improved.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion power batteries, and in particular relates to a modular lithium-ion power battery. Background technique [0002] Lithium power battery is a new type of high-energy battery successfully developed in the 20th century; the negative electrode of this battery is metal lithium, and the positive electrode is MnO2, SOCL2, etc.; it entered practical use in the 1970s; because of its high energy, high battery voltage, large current, and long storage life Long and other advantages, it has been widely used in automobiles and small civilian electrical appliances, such as electric vehicles, mobile phones, portable computers, video cameras, cameras, etc., partially replacing traditional batteries; large-capacity lithium batteries have been tried in electric vehicles and will become 21 It is one of the main power sources of electric vehicles in the century, and will be applied in artificial satellites, aerospa...

AI Technical Summary

Problems solved by technology

[0002] Lithium power battery is a new type of high-energy battery successfully developed in the 20th century; the negative electrode of this battery is metal lithium, and the positive electrode is MnO2, SOCL2, etc.; it entered practical use in the 1970s; because of its high energy, high battery voltage, large current, and long storage life Long and other advantages, it has been widely used in automobiles and small civilian electrical appliances, such as electric vehicles, mobile phones, portable computers, video cameras, cameras, etc., partially replacing traditional batteries; large-capacity lithium batteries have been tried in electric vehicles and will become 21 It is one of the main power sources of electric vehicles in the century, and will be applied in artificial satellites, aerospace and energy storage; in the field of electric vehicles, due to the characteristics of high voltage and large current of lithium-ion power battery packs, lithium-ion power batteries The temperature around the group increases, which accelerates the aging speed of the wiring harness on the lithium-ion power battery, and also affects the use of the lithium-ion power battery

[0003] There are also some technical solutions for modular lithium-ion power batteries in the prior art. For example, a Chinese patent with application number CN201620792262.0 discloses a modular lithium-ion power battery, including a battery box and a battery pack. The battery pack is composed of a plurality of single cells. The tabs and poles of the single cells are connected through stainless steel bolts. The tabs and poles are provided with butt welding areas connected by butt welding. The bulk lithium-ion power batteries are connected to each other through a conductive row to form a battery pack. The surface of the conductive row is provided with a temperature sensor. The battery box is filled with heat-conducting oil. The battery box is provided with a heat-conducting oil inlet and a heat-conducting Oil outlet; this technical solution has firm connection, temperature control, strong applicability, and high reliability; however, the overall battery box of this technical solution is a sealed structure, which is not conducive to heat dissipation. power consumption, resulting in high maintenance costs of lithium-ion power batteries, and thus the limitations of this technical solution

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