CN219226459U

CN219226459U - Storage battery protection device for pure electric automobile

Info

Publication number: CN219226459U
Application number: CN202222767472.2U
Authority: CN
Inventors: 彭晓莉; 何锋; 胡耀宗; 边东生
Original assignee: Guizhou University
Current assignee: Guizhou University
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-06-20
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses a battery protection device for a pure electric vehicle, which is characterized in that a top cover is arranged at the top of a battery compartment shell, a battery compartment is arranged in the middle of the inside of the battery compartment shell, the inside of the battery compartment is divided into a plurality of battery fixing chambers by criss-cross battery component partition boards, a plurality of cooling fins are embedded in each battery component partition board, the cooling fins are in a heat pipe cooling device structure, a plurality of buffer spring devices are arranged in gaps between the outer wall of the battery compartment and the inner wall of the battery compartment shell, and two ends of the buffer spring devices respectively prop against the battery compartment shell and the battery compartment. The battery compartment housing and the top cover made of the honeycomb plate can absorb most of the impact load by virtue of plastic deformation, and the rest of the impact load can be absorbed for the second time by the buffer spring device. When the temperature in the battery compartment is continuously increased along with the increase of the vehicle speed, the heat pipe heat dissipation device of the heat dissipation plate can timely generate thermal response, and the highest temperature, the average temperature and the temperature difference between the battery units of the battery pack can be effectively reduced.

Description

Storage battery protection device for pure electric automobile

Technical Field

The utility model relates to a storage battery protection device, in particular to a storage battery protection device for a pure electric vehicle.

Background

The pure electric automobile is an important research object in various countries in the world because of the advantages of zero emission, low cost, low noise and the like. The pure electric vehicle is required to face complex and variable driving conditions in the use process, and accidents of explosion caused by excessive extrusion of the storage battery due to violent collision among vehicles often occur. With the continuous increase of the vehicle speed, the heat generation amount can also be increased sharply, and the service life and the performance consistency of the fuel cell stack can be affected by excessive heat. The battery compartment is used as one of the core components of the whole vehicle, and plays a key role in protecting the battery pack from running stably. However, the conventional battery protection device has the following defects: (1) The adoption of a relatively simple solid box body or a battery stack fixing support and the like not only consumes materials, but also is difficult to meet the requirements of anti-collision and stable working environment temperature of the storage battery under the condition of facing external high-strength impact load. (2) In the use process of the storage battery, the working temperature is in a certain range so as to ensure the discharging efficiency of the storage battery and delay the service life of the storage battery. However, the conventional heat dissipation device has problems such as low thermal response speed, poor internal constant temperature of the battery box, and uneven heat dissipation between the battery cells in the aspect of heat dissipation of the storage battery. Therefore, it is important to design a battery protection device that can protect the battery from excessive extrusion and provide a suitable working environment for the battery pack.

Disclosure of Invention

The utility model aims to provide a storage battery protection device for a pure electric automobile. Is used for solving the defects existing in the prior art.

The technical scheme of the utility model is as follows: the utility model provides a pure electric vehicles battery protector, including the battery compartment shell, battery compartment shell top is provided with the top cap, be provided with the battery compartment in the middle of the inside of battery compartment shell, the inside battery component baffle that is criss-cross of battery compartment separates into a plurality of battery fixed chamber, inlay in every battery component baffle has the polylith fin, this fin is heat pipe heat abstractor structural style, be provided with a plurality of buffer spring devices in the space between battery compartment outer wall and the battery compartment shell inner wall, buffer spring device's both ends support battery compartment shell and battery compartment respectively.

In the above-mentioned battery protection device for a pure electric vehicle, the battery compartment housing and/or the top cover are assembled by honeycomb plates, the honeycomb plates comprise inner and outer panels, and a honeycomb core is arranged between the 2 panels.

In the aforementioned battery protection device for a pure electric vehicle, the buffer spring device comprises a spring housing, the bottom surface of the spring housing is fixed on the inner wall of the battery compartment housing, a spring is arranged in a cavity of the inner wall of the spring housing, the front end of the spring presses a pressing plate, the back of the pressing plate is provided with a push rod, the push rod penetrates through the head end of the spring housing to be fixedly connected with a top plate, and the other end of the top plate abuts against the outer wall of the battery compartment.

In the above-mentioned battery protection device for a pure electric vehicle, a spring limiting block is fixed on the bottom surface of the pressing plate and the bottom of the cavity on the inner wall of the spring housing, and the spring limiting block is sleeved into the spring.

In the above-mentioned battery protection device for a pure electric vehicle, the push rod extends into the rod body of the spring housing and is sleeved with 1 sleeve, and the sleeve is fixed in the spring housing.

The utility model has the beneficial effects that: compared with the prior art, the utility model has the following advantages:

(1) The heat radiating fin in the structure form of the heat pipe radiating device can timely consume redundant heat in the battery box, so that the influence on the service life and the working efficiency of the battery due to overhigh temperature is avoided, the heat pipe radiating device has high thermal response speed and uniform heat radiation, and the temperature of the battery monomer in the battery box can be better maintained in a proper working range;

(2) Compared with the existing storage battery protection device, the battery compartment shell and the top cover which are made of honeycomb plates are higher in strength and rigidity, and more excellent in buffering vibration isolation, sound insulation and heat insulation performance, and compared with the existing device, the battery compartment shell and the top cover are less in consumable materials, and can absorb a large part of impact load by virtue of plastic deformation when an automobile collides, so that a first layer of safety guarantee is provided for preventing the explosion of the battery compartment due to excessive extrusion;

(3) The battery compartment and the battery compartment shell adopt the buffer spring device to fix the relative positions of the battery compartment and the battery compartment shell, so that the single battery is prevented from generating great relative movement in the running process of the automobile, the buffer spring device can also utilize the self advantages to buffer the impact load which cannot be absorbed by the battery compartment shell for the second time while fixing the relative position of the battery compartment, and a second layer of safety guarantee is provided for the collision prevention of the battery compartment;

(4) The energy absorption box, namely the battery compartment shell, is added on the traditional battery protection device, so that the safety protection effect is better, and the energy absorption box is applicable to various vehicle types and different areas;

(5) When the automobile collides to damage the storage battery protection device, maintenance personnel can replace the battery compartment shell, the top cover or the buffer spring device according to single damage degree, so that the maintenance speed is accelerated, and meanwhile, the economic loss of an automobile owner is reduced.

Drawings

FIG. 1 is a schematic view of the whole structure of a battery protection device according to the present utility model;

FIG. 2 is a schematic view showing the overall internal structure of the battery protection device of the present utility model;

FIG. 3 is a schematic diagram of a honeycomb panel structure according to the present utility model (a is a structure diagram of the interior of the honeycomb panel; b is a schematic diagram of the honeycomb core cell arrangement);

fig. 4 is a schematic structural view of a buffer spring device according to the present utility model.

Reference numerals: 1-top cover, 2-battery compartment housing, 3-buffer spring device, 31-top plate, 32-sleeve, 33-pressing plate, 34-spring limiting block, 35-spring, 36-spring housing, 4-battery compartment, 5-cooling fin.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

Embodiments of the utility model: the utility model provides a pure electric vehicles battery protector, as shown in fig. 1-4, including battery compartment shell 2, battery compartment shell 2 top activity is provided with top cap 1, be provided with battery compartment 4 in the middle of the inside of battery compartment shell 2, battery compartment 4 is inside to separate into a plurality of battery fixed cavity through vertically and horizontally staggered's battery component baffle, inlay in every battery component baffle has polylith fin 5, this fin 5 is heat pipe heat abstractor structural style, be provided with a plurality of buffer spring device 3 in the space between battery compartment 4 outer wall and the battery compartment shell 2 inner wall, the both ends of buffer spring device 3 support battery compartment shell 2 and battery compartment 4 respectively. During the use, the battery is placed in the fixed cavity of battery, and when battery compartment 4 appears moving in battery compartment shell 2 inside, battery compartment 4 can extrude buffer spring device 3, and buffer spring device 3 then can offset the pressure that battery compartment 4 removed and produce, avoids battery compartment 4 to appear touching with battery compartment shell 2. The buffer spring device 3 is arranged between the gaps of the battery compartment shell 2 and the battery compartment 4, can fix the relative position between the battery compartment shell 2 and the battery compartment 4, and has the main effect of buffering the excessive impact load which is not absorbed by the battery compartment shell 2 through the deformation of the spring, and reducing the damage of the external impact load to the battery compartment 4.

A plurality of radiating fins 5 are embedded in each battery pack component partition board, the radiating fins 5 are in a heat pipe radiating device structure form, so that a battery pack can be fixed, and the problems that heat accumulation is caused by difficult heat dissipation of a middle battery monomer, the temperature of a battery is increased, and the temperature of an edge battery is relatively reduced due to the heat dissipation of the edge battery are solved. The heat pipe has super heat conducting performance, and when the evaporating end is heated, the medium inside the heat pipe is heated and vaporized, and vapor flows to the other end to release heat to condense into liquid under small pressure difference, and the liquid flows back to the evaporating section along the porous material under the action of capillary force. The circulation is carried out, heat is transferred from one end of the heat pipe to the other end, and therefore the highest temperature and average temperature in the storage battery protection device and the temperature difference between the battery monomers can be effectively reduced.

The battery compartment shell 2 and/or the top cover 1 are/is assembled by honeycomb plates, each honeycomb plate comprises an inner layer of panel and an outer layer of panel, and honeycomb cores are arranged between the 2 layers of panels. The battery compartment housing 2 and/or the top cover 1 are assembled by honeycomb plates and can act as an energy absorption box, when the outside of the storage battery protection device receives impact load, the battery compartment housing 2 and the top cover 1 collapse through the honeycomb plates to absorb most of impact force, and the damage of the impact load to the battery pack is reduced.

The buffer spring device 3 comprises a spring shell 36, the bottom surface of the spring shell 36 is fixed on the inner wall of the battery compartment shell 2, a spring 35 is arranged in a cavity of the inner wall of the spring shell 36, the front end of the spring 35 presses the pressing plate 33, the back of the pressing plate 33 is provided with a push rod, the push rod penetrates through the head end of the spring shell 36 to be fixedly connected with a top plate 31, and the other end of the top plate 31 abuts against the outer wall of the battery compartment 4.

When the vehicle is stably placed and not running, the battery compartment 4 is located at the center of the battery compartment housing 2, the end face of the top plate 31 is just in contact with the outer wall of the battery compartment 4, and when the battery compartment 4 moves in the battery compartment housing 2, for example, the battery compartment 4 moves to the rear side, the buffer spring device 3 at the rear side is extruded, the top plate 31 of the buffer spring device 3 is extruded to the pressing plate 33 through the ejector rod after being pressed, the pressing plate 33 is extruded to the spring 35 again, and the elastic force generated by compression of the spring 35 overcomes the pressure of the battery compartment 4.

A spring limiting block 34 is fixed on the bottom surface of the pressing plate 33 and the bottom of the cavity of the inner wall of the spring housing 36, the spring limiting block 34 is sleeved into the spring 35, and the spring limiting block 34 is used for fixing the position of the spring 35 and guaranteeing that the end surface of the spring 35 abuts against the center position of the pressing plate 33.

The shaft of the ejector rod extending to the spring shell 36 is sleeved with 1 sleeve 32, the sleeve 32 is fixed in the spring shell 36, and the sleeve 32 can guide the ejector rod and protect the ejector rod.

Claims

1. The utility model provides a pure electric vehicles battery protector which characterized in that: including battery compartment shell (2), battery compartment shell (2) top is provided with top cap (1), be provided with battery compartment (4) in the middle of battery compartment shell (2) is inside, battery compartment (4) are inside to separate into a plurality of battery fixed cavity through criss-cross battery component baffle, inlay in every battery component baffle has polylith fin (5), this fin (5) are heat pipe heat abstractor structural style, be provided with a plurality of buffer spring device (3) in the space between battery compartment (4) outer wall and battery compartment shell (2) inner wall, the both ends of buffer spring device (3) support battery compartment shell (2) and battery compartment (4) respectively.

2. The battery protection device for a battery of a pure electric vehicle according to claim 1, wherein: the battery compartment shell (2) and/or the top cover (1) are/is assembled by honeycomb plates, each honeycomb plate comprises an inner layer of panel and an outer layer of panel, and a honeycomb core is arranged between the 2 layers of panels.

3. The battery protection device for a battery of a pure electric vehicle according to claim 1, wherein: the buffer spring device (3) comprises a spring shell (36), the bottom surface of the spring shell (36) is fixed on the inner wall of the battery compartment shell (2), a spring (35) is arranged in a cavity of the inner wall of the spring shell (36), the front end of the spring (35) presses a pressing plate (33), the back of the pressing plate (33) is provided with a push rod, the push rod penetrates through the head end of the spring shell (36) and is fixedly connected with a top plate (31), and the other end of the top plate (31) abuts against the outer wall of the battery compartment (4).

4. A battery protection device for a battery of a pure electric vehicle according to claim 3, wherein: a spring limiting block (34) is fixed on the bottom surface of the pressing plate (33) and the bottom of the cavity of the inner wall of the spring shell (36), and the spring limiting block (34) is sleeved into the spring (35).

5. A battery protection device for a battery of a pure electric vehicle according to claim 3, wherein: the ejector rod extends into the rod body of the spring shell (36) and is sleeved with 1 sleeve (32), and the sleeve (32) is fixed in the spring shell (36).