Power battery case with adjustable capacity and voltage

Abstract

The invention provides a shell body capable of enveloping a plurality of power cells, which comprises: an upper end plate provided with an upper end plate groove with a shape corresponding to the outline of the end face of a power cell; at least one intermediate frame body, which is provided with a hollow structure corresponding to the outline of the power cell; and an lower end plate, which is provided with a lower end plate groove with a shape corresponding to the outline of the end face of the power cell. The shell body reasonably meets the requirements on shell body for power cells such as lithium batteries with soft batteries, and realizes the random adjustment of voltage and capacity. The single cells are clamped tightly to ensure the vacuity so as to reduce the vibration of aluminum-plastic film as well as scrapes and damages, to facilitate and ensure the reliability of the connection between a copper press plate and positive and negative plates and to ensure the stable performance and consistency of the cell.

Description

technical field [0001] The invention relates to a casing for encapsulating a plurality of power batteries, and the invention can be applied in the technical field of electric vehicles. Background technique [0002] The oil crisis and environmental pollution brought by the development of the automobile industry have become increasingly prominent, making electric vehicles more and more aroused the attention of the society, and electric vehicles have become the development direction of future automobiles. The core technology of electric vehicles is the energy storage and supply system. Solving the use of battery technology has become the key technology for the industrialization of electric vehicles. [0003] The battery cells of existing electric vehicles (such as electric buses) are connected in series through wires, and are bare-packed in metal boxes. In addition to connecting the single cells with wires, each battery box is also connected with a power connection line. There...

AI Technical Summary

Problems solved by technology

In addition to connecting the single cells with wires, each battery box is also connected with a power connection line. There are more than ten boxes in each car, which are placed on both sides of the bus; this will cause the battery connection to be too long, and the circuit voltage drop will be large. Small power output, high power loss

In addition, the single battery is bare in the metal box, which is not waterproof, dustproof, and shockproof. It is very easy to produce self-discharge caused by dust and water vapor, which will cause the body to be electrified and affect insulation and safety; it is also prone to loosening and contact resistance, which affects The consistency and power output of the battery; moreover, the whole box is fixed with bolts, so it cannot be quickly assembled and disassembled as a whole, and the continuous mileage cannot be extended by quick battery replacement, especially lithium batteries and other organic batteries, which are flammable when misused Its promotion and use must have the safety conditions of quick separation from the car

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