Power battery apparatus with waterproof function and control method thereof

Abstract

The invention provides a power battery apparatus with waterproof function and a control method thereof. The battery apparatus comprises a battery box and a power battery module in the battery box; an air channel is arranged between the battery box and the power battery module; the battery box is provided with an air port A and an air port B; the air port A is successively provided with a 1# adsorption room and a 1# heating room; the air port B is successively provided with a 2# adsorption room and a 2# heating room; the 1# adsorption room and the 2# adsorption room are filled with a water adsorption agent; and the 1# heating room and the 2# heating room are both inside provided with a heating device. According to the control method, under a high-temperature cooling mode, a low-temperature heating mode and an adsorption regeneration mode of the power battery apparatus, the battery apparatus is controlled through a vehicle controller, and therefore, the control method helps to effectively solve influence of coagulation of moisture in air in the power battery apparatus on insulating property of the power battery apparatus when the power battery apparatus is subjected to direct wind-cooling during thermal management.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a power battery device with a waterproof function and a control method thereof. Background technique [0002] As the power source module of electric vehicles, the power battery generates heat during charging and discharging, which makes the temperature of the power battery rise rapidly. In order to make the power battery work normally and reliably during driving again, the temperature rise of the battery must be effectively dissipated and cooled. Common heat dissipation systems are divided into two types: air cooling and water cooling. Among them, the air cooling heat dissipation system uses an electronic fan to blow or extract air to cool the battery. Because the whole system is simple and safe, it has become the most commonly used heat sink for electric vehicle power batteries. However, the water-cooling system needs to install complex cooling water pipe passages and high-perf...

AI Technical Summary

Problems solved by technology

Common heat dissipation systems are divided into two types: air cooling and water cooling. Among them, the air cooling heat dissipation system uses an electronic fan to blow or extract air to cool the battery. Because the whole system is simple and safe, it has become the most commonly used heat sink for electric vehicle power batteries. However, the water-cooling system needs to install complex cooling water pipe passages and high-performance water pump motors, which not only requires high technical requirements, but the increased weight of the cooling system will greatly reduce the energy density of the power battery system, and there is also the safety of cooling water pipe leakage Hidden danger

[0003] However, the current air-cooled heat dissipation technology will cause water vapor in the air to condense inside the battery, which will affect the insulation performance of the battery to a certain extent. Therefore, how to effectively solve the waterproof problem accompanied by air-cooled heat dissipation technology is an urgent need in the heat dissipation research of power batteries. problem solved

A utility model patent (CN202009061U) discloses a power battery device with an air-cooling mechanism for electric vehicles. The power battery device adopts a fully sealed design, and then an electronic fan is installed inside the power battery for internal circulation air cooling and heat dissipation. It does improve the waterproof performance of the air-cooling system, which can balance the thermal field inside the power battery, but because the heat dissipation system has no air inlet and outlet, it cannot directly exchange heat with the external environment, so the heat dissipation effect is poor

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