CN111668572A - A battery pack for an electric vehicle - Google Patents

Abstract

The invention discloses a battery assembly for an electric vehicle, comprising a protective shell, wherein the protective shell is set as a box body with an upward opening, and the inner side of the protective shell is provided with a heat dissipation frame, and the middle part of the heat dissipation frame is provided with an air intake penetrating to both ends. The inner side of the heat dissipation frame is displaced and the front and rear sides of the air intake channel are provided with heat dissipation cavities, and several batteries are evenly arranged on the inner side of the heat dissipation cavity. The heat dissipation cavity on the set heat dissipation frame is used to place the battery, and the cold air is transported into the air intake cavity through the air intake fan and evenly distributed into the heat dissipation cavity through the air intake channel to cool down the battery and dissipate heat, while the heat generated by the battery operation is It is quickly sent to the exhaust channel and finally realizes exhaust heat dissipation through the air outlet, which greatly improves the heat dissipation area and heat dissipation efficiency of the battery, improves the heat dissipation efficiency of the battery assembly, and has a better heat dissipation effect.

Description

A battery pack for an electric vehicle

technical field

The invention relates to the technical field of battery assemblies for electric vehicles, in particular to a battery assembly for electric vehicles.

Background technique

Electric vehicles refer to vehicles powered by on-board power supply and driven by motors that meet the requirements of road traffic and safety regulations. Due to their smaller impact on the environment than traditional vehicles, their prospects are widely optimistic, but the current technology is not yet mature. , the working principle of electric vehicles: battery - current - power conditioner - motor - power transmission system - driving the car, and the battery in an electric vehicle is often a plurality of batteries fixed in the battery box to form a The integral battery provides power to the electric vehicle.

The applicant of the present invention has found that the existing battery of an electric vehicle will generate a large amount of heat energy during operation. If it is not discharged in time, the battery will be damaged or explode and catch fire. Therefore, the heat dissipation of the battery is particularly important. The battery components of some electric vehicles often have poor heat dissipation effect, and the heat dissipation efficiency is not high. At the same time, the existing battery components lack effective protection, and when the vehicle is hit by a collision, the battery is often affected and the battery is damaged.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a battery assembly for electric vehicles, which aims to improve the problems of low heat dissipation efficiency and lack of effective protection of the existing battery assemblies for electric vehicles.

The present invention is realized in this way:

A battery assembly for an electric vehicle comprises a protective shell, wherein the protective shell is set as a box body with an upward opening, and the inner side of the protective shell is provided with a heat dissipation frame, and the middle part of the heat dissipation frame is provided with an air intake channel penetrating to both ends, and the heat dissipation The inner side of the displacement air intake channel is provided with a heat dissipation cavity on both sides, the inner side of the heat dissipation cavity is evenly arranged with a number of batteries, and an exhaust is provided between the front and rear ends of the heat dissipation frame and the front and rear side walls of the inner side of the protective shell. There are air inlet cavities between the left and right ends of the heat dissipation frame and the left and right side walls of the inner side of the protective shell, and the left and right ends of the protective shell are provided with air intake fans for supplying air into the air inlet cavity. Air is supplied into the air intake channel, and the air intake channel is communicated with the heat dissipation cavity, and the heat dissipation cavity is communicated with the exhaust channel. The heat dissipation cavity is used to place the battery, and the cold air is sent into the air intake cavity through the air intake fan and evenly dispersed into the heat dissipation cavity through the air intake channel to cool the battery and dissipate heat, and the heat generated by the battery operation is quickly sent to the exhaust. The exhaust and heat dissipation are realized in the channel and finally through the air outlet, which greatly improves the heat dissipation area and heat dissipation efficiency of the battery, improves the heat dissipation efficiency of the battery assembly, and has a good heat dissipation effect;

The heat dissipation frame is provided with two upper and lower support plates in the heat dissipation cavity, and the support plates limit and fix the battery. The left and right ends of the heat dissipation frame are fixed with evenly arranged convex buffer plates, and the front and rear ends of the heat dissipation frame are fixed. All of them are fixed with evenly arranged raised heat dissipation plates, and the surface of the heat dissipation plate is provided with through holes. The battery is limited and fixed by the set support plate to prevent the battery from shaking, and to make the gap between the battery and the inner wall of the heat dissipation cavity. Retain a certain buffer space to play a certain excessive buffer when the battery components are collided, and at the same time, it is beneficial to the surface heat dissipation of the battery. The buffer protection effect can effectively protect the battery.

Further, the edge of the upper port of the protective shell is provided with a reinforcing edge that protrudes to the outside, and the lower end of the protective shell is provided with a reinforcing plate that protrudes to the outside edge, and the strength of the protective shell is reinforced by the provided reinforcing edge and the reinforcing plate. Has better anti-deformation ability.

Further, the front and rear side walls of the inner side of the protective shell are provided with card slots near the upper end, and the front and rear edges of the cover plate are clipped in the card slots. The fan is installed and fixed in the air suction port, and the cover plate is clamped through the set slot, which is convenient for the removal of the cover plate and the replacement of the battery. air supply.

Further, the outer side of the air intake fan is fixedly sleeved with a fixing plate, and one side of the fixing plate is provided with a raised clamping table, the air intake fan is fixed and installed in the air inlet through the clamping table, and the air intake fan is clamped through the clamping table. It is installed in the suction port to facilitate the installation and removal of the intake fan.

Further, partitions are provided on both sides of the air inlet channel of the heat dissipation frame, and air inlets are arranged on both partitions, and the two partitions are fixedly connected by the evenly arranged connecting plates, and are connected to each other. The plate is provided with through holes, the left and right ends of the heat dissipation frame are provided with air supply ports that communicate with the air intake channel, and the heat dissipation cavity on the inner side of the heat dissipation frame is provided with evenly arranged heat absorption plates, and the front and rear ends of the heat dissipation frame are provided with uniformly arranged heat absorbing plates. Equipped with evenly arranged heat dissipation ports, the heat generated by the battery is absorbed and dispersed on the heat dissipation frame through the heat absorption plate arranged in the heat dissipation cavity, and then discharged with the airflow, which has a good heat dissipation effect, and is sent to the heat dissipation cavity through the air inlet. The hot air is exhausted through the heat dissipation port to achieve efficient heat dissipation.

Further, the heat dissipation frame is made of aluminum material, and the outer dimension of the heat dissipation frame is the same as the inner size of the protective shell, and the aluminum material has good thermal conductivity to realize rapid heat conduction and heat dissipation.

Further, evenly arranged limit sleeves are arranged on the support plate, the battery is clamped in the limit sleeve, and the inner diameter of the limit sleeve is the same as the size of the battery, and the battery is limited and fixed by the limit sleeve to prevent it from shaking. and positioning during installation.

Further, the size of the support plate is the same as that of the heat dissipation cavity, and the support plate is made of high-temperature-resistant engineering plastics. The support plate is clamped in the heat-dissipation cavity to achieve better protection for the battery. the weight of.

Compared with the prior art, the beneficial effects of the present invention are:

In the present invention, the heat dissipation cavity on the heat dissipation frame is used to place the battery, and the cold air is transported into the air intake cavity through the air intake fan and evenly dispersed into the heat dissipation cavity through the air intake channel to cool down the battery and dissipate heat, and the battery work produces The heat is quickly sent to the exhaust channel and finally exhausted and dissipated through the air outlet, which greatly improves the heat dissipation area and heat dissipation efficiency of the battery, improves the heat dissipation efficiency of the battery components, and has a good performance. For the heat dissipation effect, the battery is limited and fixed by the set support plate to prevent the battery from shaking, and a certain buffer space is reserved between the battery and the inner wall of the heat dissipation cavity, which will play a certain excessive buffer when the battery components are collided. At the same time, it is beneficial to the surface heat dissipation of the battery, and at the same time, the buffer support between the heat dissipation frame and the protective shell is realized by the provided buffer plate and the heat dissipation plate, which plays a certain buffer protection role, and effectively protects the battery.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

1 is a perspective view of a battery assembly for an electric vehicle of the present invention;

2 is a schematic diagram of a first internal structure of a battery assembly for an electric vehicle shown in the present invention;

3 is a schematic diagram of a first internal structure of a battery assembly for an electric vehicle shown in the present invention;

4 is a schematic diagram of a protective casing of a battery assembly for an electric vehicle shown in the present invention;

5 is a schematic diagram of an air intake fan of a battery assembly for an electric vehicle shown in the present invention;

6 is a schematic diagram of a heat dissipation structure of a battery assembly for an electric vehicle shown in the present invention;

7 is a schematic diagram of a heat dissipation frame of a battery assembly for an electric vehicle shown in the present invention;

FIG. 8 is a schematic diagram of a support plate of a battery assembly for an electric vehicle according to the present invention.

In the figure: 1, protective shell; 110, air inlet; 120, air outlet; 130, card slot; 140, reinforcement plate; 150, reinforcement edge; 2, cover plate; 3, intake fan; 31, fixed plate; 32 , card table; 4, heat dissipation frame; 41, heat absorption plate; 42, partition plate; 43, connecting plate; 44, buffer plate; 45, heat dissipation plate; 46, heat dissipation port; 47, air inlet; 48, air supply port; 49, square frame; 5, battery; 6, support plate; 61, limit sleeve; 7, air inlet cavity; 8, exhaust passage; 9, air inlet passage; 10, heat dissipation chamber.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

Embodiment 1, please refer to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 and FIG. 6 for details. A battery assembly for an electric vehicle includes a protective shell 1. The inner side of the shell 1 is provided with a heat dissipation frame 4, the middle part of the heat dissipation frame 4 is provided with an air intake channel 9 penetrating to both ends, and a heat dissipation cavity 10 is provided on the front and rear sides of the inner displacement air intake channel 9 of the heat dissipation frame 4, The inner side of the heat dissipation cavity 10 is evenly arranged with a number of batteries 5, and an exhaust channel 8 is provided between the front and rear ends of the heat dissipation frame 4 and the front and rear side walls of the inner side of the protective shell 1. The left and right ends of the heat dissipation frame 4 are connected to the protective shell. 1. An air inlet cavity 7 is provided between the left and right side walls of the inner side, and the left and right ends of the protective shell 1 are provided with an air intake fan 3 for supplying air into the air inlet cavity 7. Air is supplied inside, and the air intake channel 9 is communicated with the heat dissipation cavity 10, and the heat dissipation cavity 10 is communicated with the exhaust channel 8. The left and right ends of the protective shell 1 are provided with air outlets 120 communicated with the exhaust channel 8. The heat dissipation cavity 10 on the rack 4 is used to place the battery 5, and the cold air is transported into the air inlet cavity 7 through the air intake fan 3 and evenly dispersed into the heat dissipation cavity 10 through the air intake channel 9 to cool the battery 5 and dissipate heat. The heat generated by the work is quickly sent to the exhaust channel 8 and finally realizes exhaust heat dissipation through the air outlet 120, which greatly improves the heat dissipation area and heat dissipation efficiency of the battery 5, and improves the heat dissipation efficiency of the battery assembly. And has better heat dissipation effect;

For details, please refer to FIG. 2 and FIG. 7 , the heat dissipation frame 4 is provided with two upper and lower support plates 6 in the heat dissipation cavity 10 , and the support plates 6 limit and fix the battery 5 , and the left and right ends of the heat dissipation frame 4 are fixed. There are evenly arranged convex buffer plates 44, and the front and rear ends of the heat dissipation frame 4 are fixedly provided with evenly arranged convex heat dissipation plates 45. The surface of the heat dissipation plate 45 is provided with through holes. The battery 5 is limited and fixed to prevent the battery 5 from shaking, and a certain buffer space is reserved between the battery 5 and the inner wall of the heat dissipation cavity 10, which will play a certain excessive buffer when the battery components are collided, and is beneficial to the battery 5. At the same time, the buffer plate 44 and the heat dissipation plate 45 are provided to realize the buffer support between the heat dissipation frame 4 and the protective shell 1 to play a certain buffer protection role, so as to effectively protect the battery 5 .

For details, please refer to FIG. 3 , the upper port edge of the protective shell 1 is provided with a reinforcing edge 150 that protrudes outward, and the lower end of the protective shell 1 is provided with a reinforcing plate 140 that protrudes toward the outer edge. The strength reinforcement of the protective shell 1 and the reinforcement plate 140 have a better ability of preventing deformation.

For details, please refer to FIG. 3 , the front and rear side walls of the inner side of the protective shell 1 are provided with card slots 130 near the upper end. The middle part is provided with an air suction port 110, and the air intake fan 3 is installed and fixed in the air suction port 110. The card slot 130 is provided to realize the clamping of the cover plate 2 to facilitate the disassembly of the cover plate 2 and also facilitate the replacement of the battery 5. , the air intake fan 3 is fixed through the air suction port 110 and the air is supplied into the air intake cavity 7 .

For details, please refer to FIG. 4 , the outer side of the air intake fan 3 is fixedly sleeved with a fixing plate 31 , and one side of the fixing plate 31 is provided with a raised clamping table 32 , and the air intake fan 3 is fixed and clamped on the clamping table 32 . In the air inlet 110 , the air intake fan 3 is clamped and mounted in the air inlet 110 through the clamping table 32 to facilitate the installation and removal of the air intake fan 3 .

Please refer to FIG. 7 for details. The heat dissipation frame 4 is made of aluminum material, and the external dimensions of the heat dissipation frame 4 are the same as the internal dimensions of the protective shell 1. The aluminum material has good thermal conductivity to achieve rapid heat conduction and heat dissipation. The heat dissipation frame 4 are provided with partitions 42 on both sides of the air inlet channel 9, and the two partitions 42 are provided with evenly arranged air inlets 47, and the two partitions 42 are fixedly connected by the evenly arranged connecting plates 43, And the connecting plate 43 is provided with through holes, the left and right ends of the heat dissipation frame 4 are provided with air supply ports 48 that communicate with the air intake channel 9, and the heat dissipation cavity 10 on the inner side of the heat dissipation frame 4 is provided with uniformly arranged heat absorption plates. 41. The front and rear ends of the heat dissipation frame 4 are provided with uniformly arranged heat dissipation ports 46. The heat generated by the battery 5 is absorbed and dispersed on the heat dissipation frame 4 through the heat absorption plate 41 disposed in the heat dissipation cavity 10, and then discharged with the airflow. It has a good heat dissipation effect, and the air is supplied into the heat dissipation cavity 10 through the air inlet 47 and the hot air is discharged through the heat dissipation port 46 to achieve efficient heat dissipation.

For details, please refer to FIG. 8 , the support plate 6 is provided with evenly arranged limit sleeves 61 , the battery 5 is clamped in the limit sleeve 61 , and the inner diameter of the limit sleeve 61 is the same as the size of the battery 5 . The sleeve 61 realizes the limiting and fixing of the battery 5 to avoid its shaking and positioning during installation. The size of the support plate 6 is the same as that of the heat dissipation cavity 10, and the support plate 6 is made of high-temperature resistant engineering plastics. The battery 5 is better protected in the heat dissipation cavity 10, and the weight of the battery assembly can be reduced by selecting high-temperature-resistant engineering plastics.

Working principle: The support plate 6 is clamped on the inner side of the upper and lower ports of the heat dissipation cavity 10, and then the battery 5 is clamped in the limit sleeve 61, and the cold air is sent into the air intake cavity 7 through the air intake fan 3 and through the air intake channel 9 And the air inlet 47 evenly disperses the cold air into the heat dissipation cavity 10 to cool down the battery 5 and dissipate heat, and the heat generated by the operation of the battery 5 is quickly sent to the exhaust channel 8 through the heat dissipation port 46 and finally realized through the air outlet 120. Exhaust cooling.

The device obtained through the above design can basically meet the high heat dissipation efficiency of the existing battery components for electric vehicles and can effectively protect the battery components. further improvement.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A battery assembly for an electric vehicle, comprising a protective shell (1), characterized in that: the protective shell (1) is provided as an upwardly open box, and the inner side of the protective shell (1) is provided with a heat dissipation frame (4). ), the middle part of the heat dissipation frame (4) is provided with an air intake channel (9) penetrating to both ends, and the front and rear sides of the inner displacement air intake channel (9) of the heat dissipation frame (4) are provided with heat dissipation cavities (10), a plurality of batteries (5) are evenly arranged on the inner side of the heat dissipation cavity (10), and a row of batteries (5) are arranged between the front and rear ends of the heat dissipation frame (4) and the front and rear side walls of the inner side of the protective shell (1). Air passage (8), air inlet cavities (7) are provided between the left and right ends of the heat dissipation frame (4) and the left and right side walls of the inner side of the protective shell (1), and the left and right ends of the protective shell (1) are provided with air inlet cavities (7). Both are provided with an air intake fan (3) for supplying air into the air inlet cavity (7). (10) communicate with each other, the heat dissipation cavity (10) is communicated with the exhaust channel (8), and the left and right ends of the protective shell (1) are provided with air outlets (120) communicated with the exhaust channel (8); The heat dissipation frame (4) is provided with two upper and lower support plates (6) in the heat dissipation cavity (10), and the support plates (6) limit and fix the battery (5). Evenly arranged raised buffer plates (44) are fixedly arranged at the left and right ends, and evenly arranged raised heat dissipation plates (45) are fixedly arranged at the front and rear ends of the heat dissipation frame (4). ) are provided with through holes on the surface. 2 . The battery assembly for an electric vehicle according to claim 1 , wherein the edge of the upper port of the protective shell ( 1 ) is provided with a reinforcing edge ( 150 ) that protrudes outward, and the protective shell ( 1 ). ) is provided with a reinforcing plate (140) protruding toward the outer edge at the lower end. 3 . The battery assembly for an electric vehicle according to claim 2 , wherein the front and rear side walls of the inner side of the protective shell ( 1 ) are provided with card slots ( 130 ) near the upper end, and the cover plate The front and rear edges of (2) are clamped in the card slots (130), the middle parts of the left and right end faces of the protective shell (1) are provided with air suction ports (110), and the air intake fan (3) is installed and fixed. in the air suction port (110). 4 . The battery assembly for an electric vehicle according to claim 3 , wherein a fixing plate ( 31 ) is fixedly sleeved on the outer side of the air intake fan ( 3 ), and one side of the fixing plate ( 31 ) is fixed. 5 . A raised card table (32) is provided, and the air intake fan (3) is fixedly mounted in the air suction port (110) through the card table (32). 5 . The battery assembly for an electric vehicle according to claim 4 , wherein the heat dissipation frame ( 4 ) is provided with partitions ( 42 ) on both sides of the air intake passage ( 9 ), and two The partitions (42) are provided with air inlets (47) that are evenly arranged, the two partitions (42) are fixedly connected by the evenly arranged connecting plates (43), and the connecting plates (43) are provided with There are through holes, the left and right ends of the heat dissipation frame (4) are provided with air supply ports (48) that communicate with the air intake channel (9), and the heat dissipation cavity (10) on the inner side of the heat dissipation frame (4) is provided with Evenly arranged heat absorbing plates (41), the front and rear ends of the heat dissipation frame (4) are provided with uniformly arranged heat dissipation ports (46). 6 . The battery assembly for an electric vehicle according to claim 5 , wherein the heat dissipation frame ( 4 ) is made of aluminum material, and the outer dimension of the heat dissipation frame ( 4 ) is the same as that of the protective shell ( 1 ). 7 . Internal dimensions are the same. 7 . The battery assembly for an electric vehicle according to claim 6 , wherein the support plate ( 6 ) is provided with uniformly arranged limit sleeves ( 61 ), and the battery ( 5 ) is clamped on the battery ( 5 ). 8 . inside the limiting sleeve (61), and the inner diameter of the limiting sleeve (61) is the same as the size of the battery (5). 8 . The battery assembly for an electric vehicle according to claim 7 , wherein the size of the support plate ( 6 ) is the same as the size of the heat dissipation cavity ( 10 ), and the support plate ( 6 ) is selected from high temperature engineering. 9 . Made of plastic.

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