CN210040289U

CN210040289U - Heat dissipation type electric automobile battery frame

Info

Publication number: CN210040289U
Application number: CN201920487021.9U
Authority: CN
Inventors: 李华刚
Original assignee: Zhijiang Ganghua Electromechanical Co Ltd
Current assignee: Zhijiang Ganghua Electromechanical Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-02-07
Anticipated expiration: 2029-04-11

Abstract

A heat dissipation type battery frame of an electric automobile comprises a lower bottom shell and an upper end cover, wherein a plurality of battery grooves are formed in the upper surface of a bottom plate of the lower bottom shell, and batteries are placed in the battery grooves; the middle part of each battery jar is downwards provided with an air cavity, the air cavities in the battery jars are communicated to form a gas circulation channel, the gas circulation channel is respectively communicated with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are respectively arranged on the front side plate and the rear side plate of the lower bottom shell. The electric motor car battery frame that this patent provided has solved prior art, and the radiating efficiency has been improved to the unable radiating problem in battery bottom to the discharge efficiency of battery has been improved.

Description

Heat dissipation type electric automobile battery frame

Technical Field

The utility model belongs to electric automobile battery frame field, in particular to heat dissipation type electric automobile battery frame.

Background

As electric vehicles become more and more popular, the battery pack is used as the core of the electric vehicle, and the structural arrangement and the battery performance of the battery pack are technical problems which need to be optimized continuously; the discharge efficiency of the battery can reach the best under the appropriate environmental temperature, and the appropriate working temperature of the battery is about 30 ℃; because the battery pack of the electric automobile is arranged in the battery frame, in order to ensure that the electric automobile has longer cruising ability, the batteries in the battery frame are arranged more densely, which causes higher temperature in the battery frame, thereby influencing the discharging efficiency of the batteries.

In order to solve the above problems, a new technical solution has been proposed, such as "a battery pack for an electric vehicle" described in chinese patent document CN 105870536A; the technical scheme proposed by the patent has the following defects:

1. because the batteries in the battery pack are densely arranged, if the heat dissipation effect needs to be improved, a gap for air circulation needs to be reserved between each group of battery packs, so that the length and the width of the battery pack can be increased, but the battery pack is generally arranged at the lower part of a chassis of an electric automobile, the length and the width of the battery pack are limited by the size of the automobile, and the length and the width of the battery pack are not convenient to adjust; if the clearance between the battery packs is adjusted to be small, the heat dissipation effect is affected, more importantly, the noise generated by airflow circulation is very large, and effective isolation measures are not taken for the noise, so the design can increase the noise of the electric automobile, and the driving comfort is reduced;

2. the local temperature at the contact position of the battery and the bottom of the battery pack is very high, which is also a common problem in the prior art; because the bottom of the battery has no heat dissipation gap, the temperature is slowly accumulated, and the temperature at the bottom of the battery is higher; if no temperature reduction measures are taken for the bottom temperature of the battery, the discharge efficiency of the battery is still not improved.

SUMMERY OF THE UTILITY MODEL

In view of the technical problem that the background art exists, the utility model provides a heat dissipation type electric automobile battery frame, the electric motor car battery frame that this patent provided has solved prior art, and the unable radiating problem in battery bottom has improved radiating efficiency to the discharge efficiency of battery has been improved.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

a heat dissipation type battery frame of an electric automobile comprises a lower bottom shell and an upper end cover, wherein a plurality of battery grooves are formed in the upper surface of a bottom plate of the lower bottom shell, and batteries are placed in the battery grooves; the middle part of each battery jar is downwards provided with an air cavity, the air cavities in the battery jars are communicated to form a gas circulation channel, the gas circulation channel is respectively communicated with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are respectively arranged on the front side plate and the rear side plate of the lower bottom shell.

In a preferred scheme, the plurality of battery slots are divided into two battery slot groups; the battery slots in each battery slot group are arranged in a straight line, and the air cavities in two adjacent battery slots are communicated with each other; the air inlet is positioned in the middle of the front side plate of the lower bottom shell and is respectively communicated with the air cavities close to the front side plate in the two groups of battery cell banks; the number of the air outlets is two, the two air outlets are respectively positioned on two sides of the rear side plate of the lower bottom shell, and each air outlet is correspondingly communicated with an air cavity which is close to the rear side plate of the lower bottom shell in the battery cell group.

In the preferred scheme, the outer wall of the front side plate of the lower bottom shell is provided with an air gathering port, and the air gathering port is communicated with the air inlet.

In the preferred scheme, a wire groove is arranged between the two groups of battery groove groups, and a threading hole is formed in the front side plate of the lower bottom shell; the threading hole is positioned above the air inlet and is communicated with the wire groove.

In a preferable scheme, in each group of battery cell banks, a baffle is arranged between two adjacent battery cells, and two sides of the baffle are provided with shock-absorbing layers.

In the preferred scheme, the baffle is connected with the bottom plate of the lower bottom shell, the bottom plate of the lower bottom shell is provided with an inserting slot, and the baffle is fixed with the bottom plate of the lower bottom shell by being inserted into the inserting slot; the lower part of the baffle is provided with a ventilation groove, and when the baffle is inserted into the slot, the ventilation groove is positioned at the communicating channel between the two air cavities.

In the preferred scheme, the inner wall of the top plate of the upper end cover is provided with a clamping groove, and when the lower bottom shell and the upper end cover are fixed, the upper part of the baffle plate is inserted into the clamping groove.

In the preferred scheme, a plurality of fixing frames are arranged on the left side wall and the right side wall of the lower bottom shell and are used for connecting a chassis of the electric vehicle; reinforcing ribs are arranged between the fixing frames.

This patent can reach following beneficial effect:

1. the electric vehicle battery frame provided by the patent solves the problem that the bottom of the battery cannot dissipate heat in the prior art, and improves the heat dissipation efficiency, so that the discharge efficiency of the battery is improved; in the running process of the electric automobile, air is introduced into the air cavities from the air inlets by means of the flowing of the air, the upper parts of the air cavities are sealed by the bottom of the battery, the air cavities are communicated to form a channel for the flowing of the air, and the flowing air takes away the heat at the bottom of the battery and is discharged from the air outlets; the air flow generates noise, the battery covers the top of the air cavity, the noise generated during the air flow movement can be effectively blocked,

2. the outer wall of the front side plate of the lower bottom shell is provided with the air collecting opening, so that flowing air can be collected and enter the air inlet, and the heat dissipation efficiency is improved;

3. in each group of battery cell groups, a baffle is arranged between two adjacent battery cells, and shock-absorbing layers are arranged on two sides of the baffle, so that the batteries can be prevented from vibrating, and the batteries are prevented from being damaged due to vibration;

4. the reinforcing ribs are arranged between the fixing frames, so that the strength of the fixing frames can be improved, and the fixing frames and the lower bottom shell are prevented from being broken.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a top view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a rear view of the present invention;

FIG. 4 is a structural view of the baffle and the shock absorbing layer of the present invention;

fig. 5 is a structure view of the upper end cap of the present invention.

In the figure: the solar battery comprises a lower bottom shell 1, a front side plate 101, a rear side plate 102, a threading hole 103, a battery jar 2, an air cavity 3, an air inlet 4, an air outlet 5, an air gathering port 6, a baffle 7, a shock absorption layer 8, a slot 9, a ventilation groove 10, a clamping groove 11, a fixing frame 12, a reinforcing rib 13 and a wire slot 14.

Detailed Description

As shown in fig. 1 to 5, a heat dissipation type battery frame for an electric vehicle includes a lower bottom case 1 and an upper end cover, wherein a plurality of battery slots 2 are formed in an upper surface of a bottom plate of the lower bottom case 1, and batteries are placed in the battery slots 2; the middle part of each battery jar 2 is downwards provided with an air cavity 3, the air cavities 3 in the battery jars 2 are communicated to form a gas circulation channel, the gas circulation channel is respectively communicated with a gas inlet 4 and a gas outlet 5, and the gas inlet 4 and the gas outlet 5 are respectively arranged on a front side plate 101 and a rear side plate 102 of the lower bottom shell 1.

Further, the plurality of battery slots 2 are divided into two groups of battery slot groups; the battery grooves 2 in each battery groove group are arranged in a straight line, and the air cavities 3 in two adjacent battery grooves 2 are communicated with each other; the air inlet 4 is positioned in the middle of the front side plate 101 of the lower bottom shell 1, and the air inlet 4 is respectively communicated with the air cavities 3 which are close to the front side plate 101 in the two groups of battery cell banks; the number of the air outlets 5 is two, the two air outlets 5 are respectively positioned at two sides of the rear side plate 102 of the lower bottom case 1, and each air outlet 5 is correspondingly communicated with the air cavity 3 which is close to the rear side plate 102 of the lower bottom case 1 in a group of battery cell banks;

in the implementation, the number of the battery grooves 2 is 6, the number of the battery grooves 2 in each group of battery groove groups is 3, the battery grooves 2 in the two groups of battery groove groups are arranged in parallel, and the 6 battery grooves 2 are arranged in a rectangular shape; because the depth of the air cavity 3 influences the thickness of the battery frame, the depth of the air cavity 3 is preferably 3-5 mm; the length and width of the air cavity 3 are set according to 0.8 times of the battery jar 2, and when a battery is placed in the battery jar 2, the bottom of the battery seals the top end of the air cavity 3;

the ventilation channels on both sides of the air chamber 3 are preferably arranged diagonally, so that the range of air circulation can be increased, and the heat dissipation effect can be improved.

Further, an air gathering port 6 is arranged on the outer wall of the front side plate 101 of the lower bottom shell 1, and the air gathering port 6 is communicated with the air inlet 4; the air gathering port 6 is of an involute structure and is used for gathering air entering from an air inlet grid of the electric automobile; a filter screen can be arranged at the air inlet 4 to prevent dust from entering, and the installation position of the battery frame provided by the patent is similar to that of the battery pack of the electric automobile described in Chinese patent document CN 105870536A.

Furthermore, a wire slot 14 is arranged between the two groups of battery slots, and a threading hole 103 is arranged on the front side plate 101 of the lower bottom shell 1; the threading hole 103 is positioned above the air inlet 4, and the threading hole 103 is communicated with the thread groove 14; the raceway 14 is used to collect the wires for connection of each battery.

Furthermore, in each group of battery jar groups, a baffle 7 is arranged between two adjacent battery jars 2, and two sides of the baffle 7 are provided with damping layers 8; the shock absorption layer 8 is a natural rubber shock absorption pad or a chloroprene rubber shock absorption pad; a gap exists between two adjacent battery slots 2, when the electric automobile runs, the battery can vibrate, and the shock absorption layer 8 can absorb the acting force of the vibration.

Furthermore, at the joint of the baffle 7 and the bottom plate of the lower bottom shell 1, a slot 9 is arranged on the bottom plate of the lower bottom shell 1, and the baffle 7 is fixed with the bottom plate of the lower bottom shell 1 by being inserted into the slot 9; the lower part of the baffle 7 is provided with a ventilation groove 10, and when the baffle 7 is inserted into the slot 9, the ventilation groove 10 is positioned at the communication channel between the two air cavities 3;

the number of the ventilation grooves 10 formed in the lower portion of the baffle 7 is two, and since the ventilation channels on both sides of the air chamber 3 are diagonally arranged, when the baffle 7 is inserted into the insertion groove 9, the direction problem is not considered, so long as the ventilation grooves 10 are ensured to face downward.

Furthermore, a clamping groove 11 is formed in the inner wall of the top plate of the upper end cover, and when the lower bottom shell 1 and the upper end cover are fixed, the upper portion of the baffle 7 is inserted into the clamping groove 11.

Furthermore, a plurality of fixing frames 12 are arranged on the left side wall and the right side wall of the lower bottom shell 1, the number of the fixing frames 12 is determined according to the structure of the chassis of the electric vehicle, the number of the fixing frames 12 is preferably four in the embodiment, and the fixing frames 12 are used for being connected with the chassis of the electric vehicle; reinforcing ribs 13 are arranged between the fixing frames 12; the fixing frame 12 and the lower bottom shell 1 can be connected by welding or bolts; the fixing frame 12 is fixed with the lower bottom shell 1 through an L-shaped plate, so that the connection strength of the lower bottom shell 1 and the fixing frame 12 can be improved.

The working principle of the whole device is as follows:

1. a battery is arranged in the battery jar 2, and the bottom of the battery jar 2 seals the top of the air cavity 3;

2. when the electric vehicle moves forward, flowing air enters from the air inlet 4 and then enters the air cavities 3 in the two groups of battery groove groups in two ways; the air inlet 4 may preferably be fitted with a filter screen;

3. a gap for air circulation exists at the bottom of the battery, and the heat at the bottom of the battery can be taken away by the air flow;

4. since the battery covers the top of the air chamber 3, noise generated during the movement of the air flow is effectively blocked.

Claims

1. The utility model provides a heat dissipation type electric automobile battery frame, includes drain pan (1) and upper end cover down, its characterized in that: the upper surface of the bottom plate of the lower bottom shell (1) is provided with a plurality of battery grooves (2), and batteries are placed in the battery grooves (2); the middle of each battery jar (2) is downwards provided with an air cavity (3), the air cavities (3) in each battery jar (2) are communicated to form a gas circulation channel, the gas circulation channel is respectively communicated with the air inlet (4) and the air outlet (5), and the air inlet (4) and the air outlet (5) are respectively arranged on the front side plate (101) and the rear side plate (102) of the lower bottom shell (1).

2. The heat dissipation type battery frame for the electric vehicle according to claim 1, wherein: the plurality of battery slots (2) are divided into two groups of battery slot groups; the battery tanks (2) in each battery tank group are arranged in a straight line, and the air cavities (3) in two adjacent battery tanks (2) are communicated with each other; the air inlet (4) is positioned in the middle of the front side plate (101) of the lower bottom shell (1), and the air inlet (4) is respectively communicated with the air cavities (3) which are close to the front side plate (101) in the two groups of battery cell banks; the number of the air outlets (5) is two, the two air outlets (5) are respectively positioned on two sides of the rear side plate (102) of the lower bottom shell (1), and each air outlet (5) is correspondingly communicated with the air cavity (3) which is close to the rear side plate (102) of the lower bottom shell (1) in the battery groove group.

3. The heat dissipation type battery frame for an electric vehicle according to claim 1 or 2, wherein: an air gathering port (6) is arranged on the outer wall of a front side plate (101) of the lower bottom shell (1), and the air gathering port (6) is communicated with the air inlet (4).

4. The heat dissipation type battery frame for the electric vehicle according to claim 2, wherein: a wire groove (14) is arranged between the two groups of battery groove groups, and a threading hole (103) is arranged on the front side plate (101) of the lower bottom shell (1); the threading hole (103) is positioned above the air inlet (4), and the threading hole (103) is communicated with the wire groove (14).

5. The heat dissipation type battery frame for the electric vehicle according to claim 2, wherein: in each group of battery jar, a baffle (7) is arranged between two adjacent battery jars (2), and shock-absorbing layers (8) are arranged on two sides of the baffle (7).

6. The heat dissipation type battery frame for the electric vehicle according to claim 5, wherein: the baffle (7) is connected with the bottom plate of the lower bottom shell (1), the bottom plate of the lower bottom shell (1) is provided with a slot (9), and the baffle (7) is fixed with the bottom plate of the lower bottom shell (1) by being inserted into the slot (9); the lower part of the baffle (7) is provided with a ventilation groove (10), and when the baffle (7) is inserted into the slot (9), the ventilation groove (10) is positioned at the communicating channel between the two air cavities (3).

7. The heat dissipation type battery frame for an electric vehicle according to claim 1 or 6, wherein: the inner wall of the top plate of the upper end cover is provided with a clamping groove (11), and when the lower bottom shell (1) and the upper end cover are fixed, the upper part of the baffle (7) is inserted into the clamping groove (11).

8. The heat dissipation type battery frame for the electric vehicle according to claim 1, wherein: the left side wall and the right side wall of the lower bottom shell (1) are provided with a plurality of fixing frames (12), and the fixing frames (12) are used for connecting the chassis of the electric vehicle; reinforcing ribs (13) are arranged between the fixing frames (12).