CN204375871U - A kind of impact-resistant power battery pack device - Google Patents

Abstract

An impact-resistant power battery pack device, comprising a box shell, a box inner shell placed in the box shell, a cavity is formed between the shell and the box inner shell, and nano fluid is filled in the cavity, and the inside of the box is The interior of the shell is divided into multiple battery slots by partitions, each battery slot is filled with phase change material and placed with a power battery, and an upper cover is arranged on the top of the box shell and the box inner shell; the utility model The nanofluid in the structure can absorb the impact energy and the heat generated by the battery, and the phase change material can also absorb the heat generated by the battery; the shock resistance performance and efficient thermal management of the battery can be realized in one device, which is simple and has a wide range of applications , can effectively avoid the impact of impact on the battery and improve the efficiency of thermal management and battery performance.

Description

An impact-resistant power battery pack device

technical field

The utility model relates to the technical field of power batteries of new energy vehicles, in particular to an impact-resistant power battery pack device.

Background technique

With the deepening of the energy crisis and air pollution, green energy is advocated globally, governments of various countries strongly support the development of new energy vehicles, and power batteries are developing rapidly. Due to the weak impact of the vehicle during normal driving and the strong impact under extremely harsh conditions such as collisions, the safety performance and life of the power battery will be seriously affected. The impact resistance of the battery is crucial to ensure the safety, durability and reliability of the battery. Therefore, facing the large-scale industrialization of batteries, we must attach great importance to the research and development of the impact resistance of power batteries.

Due to the technical limitations of the power battery, the power battery has extremely strict requirements on the working temperature. The battery module will generate a large amount of accumulated heat in the process of charging and discharging, resulting in the temperature of the battery module being too high and the temperature of the battery cells being seriously uneven. Excessively high temperature and uneven temperature distribution will cause thermal runaway of the battery, and even unsafe accidents such as explosion. Using an air-cooled or liquid-cooled thermal management system can reduce the temperature of the battery, but it cannot ensure that the temperature of the battery cells is evenly distributed. In order to efficiently cool the power battery, it is necessary to study an efficient and low-cost power battery thermal management device with phase change materials.

Utility model content

In order to solve the above-mentioned problems in the prior art, the utility model provides an impact-resistant power battery pack device, which can not only effectively avoid the impact of the impact on the performance of the battery, but also realize effective cooling inside the battery and achieve temperature distribution of a single battery. uniformity.

In order to achieve the above object, the utility model adopts the following technical solutions:

An impact-resistant power battery pack device, comprising a box shell 1, a box inner shell 2 placed in the box shell 1, a cavity is formed between the shell 1 and the box inner shell 2, and nanofluid is filled in the cavity 3. The inside of the box inner shell 2 is divided into a plurality of battery slots 5 by a partition 4, and each battery slot 5 is filled with a phase change material and placed with a power battery. The box shell 1 and the box body The top of the shell 2 is provided with an upper cover 6 .

Each of the battery slots 5 is air-cooled or water-cooled for heat dissipation.

The phase change material is selected according to the suitable working temperature range of the power battery.

Compared with the prior art, the utility model has the following advantages:

In the structure of the utility model, the nanofluid can absorb the impact energy and the heat generated by the battery, and the phase change material can also absorb the heat generated by the battery. Achieving battery shock resistance and efficient thermal management in one device. The device is simple and has a wide range of applications, can effectively avoid the impact of the impact on the battery and improve the efficiency of thermal management and the performance of the battery.

Description of drawings

The accompanying drawing is a schematic diagram of the assembly structure of the impact-resistant power battery of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail:

As shown in the drawings, the utility model is an impact-resistant power battery pack device, which includes a box shell 1, and a box inner shell 2 placed in the box shell 1, and a space is formed between the shell 1 and the box inner shell 2. cavity, the cavity is filled with nanofluid 3, and the inside of the box inner shell 2 is separated into a plurality of battery slots 5 by a separator 4, and each battery slot 5 is filled with a phase change material and a power battery is placed therein. An upper cover 6 is provided on the top of the box shell 1 and the box inner shell 2 .

When the box is subjected to any impact, the nanofluid absorbs the impact energy, thereby preventing the power battery from being affected by the impact. The battery tank separated by the separator is filled with phase change material. During the operation of the battery, the phase change material absorbs the accumulated heat generated by the battery by using the principle of absorbing a large amount of latent heat during the phase change process. According to requirements, the purpose of heat dissipation can also be achieved through air cooling and water cooling in the battery slot. Since the use of phase change materials can take care of each battery, it can not only ensure the reduction of battery temperature, but also ensure the temperature uniformity of the battery cells, thereby improving the efficiency of battery thermal management. In this example, the phase change material is selected according to the suitable temperature range for battery operation.

Claims (2)

1. An impact-resistant power battery pack device, characterized in that: it comprises a box shell (1), a box inner shell (2) placed in the box shell (1), the shell (1) and the box body A cavity is formed between the shells (2), and nanofluids (3) are filled in the cavity, and the inside of the box inner shell (2) is separated into a plurality of battery slots (5) by separators (4). The tank (5) is filled with phase change material and a power battery is placed, and an upper cover (6) is arranged on the top of the box shell (1) and the box inner shell (2). 2. An impact-resistant power battery pack device according to claim 1, characterized in that: each of the battery slots (5) dissipates heat by means of air cooling or water cooling.