阅读说明：本技术 一种电动汽车动力电池箱 (Power battery box of electric automobile ) 是由 张成海 周建刚 柳文琴 宋宏贵 于 2019-08-28 设计创作，主要内容包括：一种电动汽车动力电池箱,采用液体和循环空气组合的形式对电池箱的温度进行调控,其液体管路既调节循环空气的温度,还贴着电池腔外壁对电池腔侧壁的温度进行调节,而流动的循环空气不仅会进入电池腔内对温度进行调节,还通过电池腔另外两侧壁对电池腔侧壁的温度进行调节,采用循环的空气同时从四个侧面和内部对电池腔的温度进行调节,具有能量利用率高,温控效果好,安全性高的优点,具有突出的实用性。(The utility model provides an electric automobile power battery box, the form that adopts liquid and circulating air to make up regulates and control the temperature of battery box, its liquid pipeline both has adjusted circulating air's temperature, still paste the battery chamber outer wall and adjust the temperature of battery chamber lateral wall, and the circulating air that flows not only can get into the battery intracavity and adjust the temperature, still adjust the temperature of battery chamber lateral wall through the other both sides wall of battery chamber, adopt endless air to adjust the temperature of battery chamber from four sides and inside simultaneously, it is high to have energy utilization, temperature control effect is good, the high advantage of security, outstanding practicality has.)

1. A power battery box of an electric automobile comprises a rectangular block-shaped battery box body (100) and a temperature control device relative to the battery box body (100); the method is characterized in that: the battery box comprises a battery box body (100), wherein the outer sides of the left and right side walls of the battery box body (100) are respectively provided with a temperature control cavity (B), the two temperature control cavities (B) are arranged in bilateral symmetry, the two temperature control cavities (B) are communicated with the battery cavity (A) of the battery box body (100) through a plurality of ventilation through holes (101) on the left and right side walls of the battery box body (100), the two temperature control cavities (B) are communicated through transverse air ducts (102) in the front and rear side walls of the battery box body (100), cold/hot liquid pipelines (401) are laid on the side wall closest to the battery cavity (A) in the temperature control cavities (B), the cold/hot liquid pipelines (401) and the ventilation through holes (101) are arranged in a staggered manner, and a fan set (501) capable of blowing or reversely exhausting against the laying surface of the cold/hot liquid pipelines (401) is arranged in the temperature control cavity (B), the liquid inlet and outlet of the cold/hot liquid pipeline (401) is communicated with a cold/hot liquid supply device outside the box body; when the battery box is used, cold/hot liquid pipelines (401) in the two temperature control cavities (B) input cold/hot liquid media under the action of a cold/hot liquid supply device, the fan sets (501) in the two temperature control cavities (B) are mutually cooperated or only one fan set (501) is started, so that air enters the battery cavity (A) from one temperature control cavity (B), enters the other temperature control cavity (B) from the battery cavity (A) and finally returns to the original temperature control cavity (B) through the transverse air duct, and thus, the air cooled or heated through the cold/hot liquid pipelines (401) circularly adjusts the temperature of the inner cavity and the side wall of the battery box body (100).

2. The power battery box of the electric automobile according to claim 1, characterized in that: and a leakage liquid discharge channel is arranged at the bottom of the temperature control cavity (B), and the lower end of the leakage liquid discharge channel is communicated with a leakage liquid storage cavity at the bottom of the battery cavity (A).

3. The power battery box of the electric automobile according to claim 1, characterized in that: an upper cover (300) is arranged on the top opening of the battery box body (100).

4. The power battery box of the electric automobile according to claim 1, characterized in that: the two temperature control cavities (B) are formed by fixing two shells (201) on the left and right outer walls of the battery box body (100) respectively.

Technical Field

The invention relates to an electric automobile power battery box, and belongs to the technical field of electric automobile power battery arrangement structures and temperature regulation and control thereof.

Background

The power battery system is one of key component systems of the new energy automobile. At present, the suitable working temperature of the battery core of the power battery is in a narrow range, but the vehicle usually runs in a wider temperature environment. In addition, for various reasons, particularly in high rate applications, the cells generate a large amount of heat during charging and discharging. In order to ensure that the battery cell works under a proper temperature condition, a temperature control device is usually arranged to regulate the temperature in the power battery box body. Common cooling measures include natural air cooling, forced air cooling, liquid cooling, direct cooling, phase-change material cooling and the like. Air cooling utilizes air flow to accomplish the regulation of electric core temperature, and liquid cooling and phase change material set up the heat conduction material usually between the electric core and pass through heat-conduction.

Such as chinese patent application "patent application No. 201910204330; name: a battery temperature control system, a battery pack box, a cooling circulation pipeline and a method' provide a hexagonal cylinder battery box with air cooling and liquid cooling channels arranged in the wall of the box, a liquid cooling disc between battery packs is used for adjusting the working temperature of battery cells, and potential safety hazards exist when liquid pipelines are arranged between the battery cells.

Also, for example, the Chinese patent application "patent application number: 201811511912, respectively; name: the power battery box structure provides a battery box, and a cooling liquid cavity and a phase-change material cavity are arranged on the side wall of the battery box to improve the temperature of the power battery box. On one hand, the liquid pipeline is arranged in the wall of the box body, and energy is transmitted to the cells through conduction, so that the defects of complex structure and heavy weight exist; on the other hand, the cooling capacity is insufficient due to the fact that the liquid cooling mode of the box body shell is adopted.

Disclosure of Invention

The invention aims to provide a novel power battery box aiming at the defects of the conventional power battery box of an electric automobile and the temperature regulation technology thereof, the power battery box adopts a liquid and circulating air combined mode to regulate and control the temperature of the battery box, a liquid pipeline not only regulates the temperature of circulating air, but also regulates the temperature of the side wall of the battery cavity by adhering to the outer wall of the battery cavity, flowing circulating air can enter the battery cavity to regulate the temperature, the temperature of the side wall of the battery cavity is also regulated by the other two side walls of the battery cavity, and the circulating air is adopted to regulate the temperature of the battery cavity from four side surfaces and the inside at the same time, so that the novel power battery box has the advantages of high energy utilization rate, good temperature control effect and high safety, and has outstanding practicability.

In order to achieve the purpose, the technical solution of the invention is as follows:

a power battery box of an electric automobile comprises a rectangular block-shaped battery box body and a temperature control device related to the battery box body; the outer sides of the left side wall and the right side wall of the battery box body are respectively provided with a temperature control cavity, the two temperature control cavities are arranged in bilateral symmetry, the two temperature control cavities are communicated with the battery cavity of the battery box body through a plurality of ventilation through holes on the left side wall and the right side wall of the battery box body respectively, the two temperature control cavities are communicated through transverse air ducts in the front side wall and the rear side wall of the battery box body, cold/hot liquid pipelines are laid on the side wall closest to the battery cavity in the temperature control cavities, the ventilation through holes and the cold/hot liquid pipelines are arranged in a staggered manner, a fan set capable of blowing or reversely exhausting air against the laying surface of the cold/hot liquid pipelines is arranged in the temperature control cavities, and liquid inlet and outlet ports of the cold/hot liquid pipelines are communicated with; when the temperature control device is used, cold/hot liquid pipelines in the two temperature control cavities input cold/hot liquid media under the action of the cold/hot liquid supply device, the fan sets in the two temperature control cavities are mutually cooperated or only one fan set is started, so that air enters the battery cavity from one temperature control cavity, enters the other temperature control cavity from the battery cavity, and finally returns to the original temperature control cavity through the transverse air duct, and thus, the air cooled or heated through the cold/hot liquid pipelines circularly adjusts the temperature of the inner cavity and the side wall of the battery box body.

Preferably, the bottom of the temperature control cavity is provided with a leakage liquid discharge channel, and the lower end of the leakage liquid discharge channel is communicated with a leakage liquid storage cavity at the bottom of the battery cavity.

Preferably, an upper cover is arranged on the top opening of the battery box body.

Preferably, the two temperature control cavities are formed by fixing two shells on the left and right outer walls of the battery box body respectively.

Compared with the prior art, the invention has the beneficial effects that:

1. the power battery box adopts a combination of liquid and circulating air to regulate and control the temperature of the battery box, the liquid pipeline of the power battery box not only regulates the temperature of the circulating air, but also regulates the temperature of the side wall of the battery cavity by adhering to the outer wall of the battery cavity, the flowing circulating air not only enters the battery cavity to regulate the temperature, but also regulates the temperature of the side wall of the battery cavity through the other two side walls of the battery cavity, and the circulating air is adopted to regulate the temperature of the battery cavity from four side surfaces and the inside at the same time, so that the power battery box has the advantages of high energy utilization rate, good temperature control effect and high safety, and has outstanding practicability.

2. The bottom of the temperature control cavity is also provided with a liquid discharge channel, so that the liquid with pathogenic factors can be effectively prevented from entering the battery cavity, and the safety of the battery cavity is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of the cold/hot liquid line of the present invention;

fig. 3 is a schematic structural view of the air-permeable through-holes and the transverse air ducts in the present invention.

In the figure: the battery box comprises a battery box body 100, a ventilation through hole 101, a transverse air duct 102, a shell 201, an upper cover 300, a cold/hot liquid pipeline 401, a liquid inlet 402, a liquid outlet 403, a fan set 501, a battery cavity A and a temperature control cavity B.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

Referring to fig. 1 to 3, an electric vehicle power battery box includes a rectangular block-shaped battery box body 100 and a temperature control device with respect to the battery box body 100; the outer sides of the left and right side walls of the battery box body 100 are respectively provided with a temperature control cavity B, the two temperature control cavities B are arranged in bilateral symmetry, the two temperature control cavities B are respectively communicated with the battery cavity A of the battery box body 100 through a plurality of ventilation through holes 101 on the left and right side walls of the battery box body 100, the two temperature control cavities B are communicated through transverse air ducts 102 in the front and rear side walls of the battery box body 100, cold/hot liquid pipelines 401 are laid on the side wall closest to the battery cavity A in the temperature control cavities B, the cold/hot liquid pipelines 401 are staggered with the ventilation through holes 101, a fan set 501 capable of blowing or reversely exhausting against the laying surface of the cold/hot liquid pipelines 401 is arranged in the temperature control cavities B, and a liquid inlet 402 and a liquid outlet 403 of the cold/hot liquid pipelines 401 are communicated with a cold/hot liquid supply device outside the box body; when the battery box is used, the cold/hot liquid pipelines 401 in the two temperature control cavities B input cold/hot liquid media under the action of a cold/hot liquid supply device, the fan sets 501 in the two temperature control cavities B cooperate with each other or only one fan set 501 is started, so that air enters the battery cavity A from one temperature control cavity B, enters the other temperature control cavity B from the battery cavity A, and finally returns to the original temperature control cavity B through the transverse air duct, and thus, the air cooled or heated by the cold/hot liquid pipelines 401 circularly adjusts the temperature of the inner cavity and the side wall of the battery box body 100.

As the preferred technical scheme, the bottom of the temperature control cavity B is provided with a leakage liquid discharge channel, and the lower end of the leakage liquid discharge channel is communicated with a leakage liquid storage cavity at the bottom of the battery cavity A.

Preferably, the top opening of the battery box body 100 is provided with an upper cover 300.

Preferably, the two temperature control chambers B are formed by fixing two housings 201 on the left and right outer walls of the battery box body 100, respectively.