A modular lithium-ion power battery

Abstract

The present invention discloses a modular lithium-ion power battery, comprising a battery box, a support plate fixed inside the battery box, a bottom opening formed on the surface of the support plate, a variable distance adjustment component provided inside the battery box of the support plate, a plurality of partition frames provided on the variable distance adjustment component, a module battery body provided between the partition frames, and the variable distance adjustment component comprising two guide rods fixed between the inner walls of the battery box and a screw rod rotatably inserted between the inner walls of the battery box. In the present invention, a variable distance adjustment component is adopted, and except for the partition frame on the far right, the remaining partition frames can be driven to move, so that the distance between the partition frames can be adjusted with equal variable distance, and the module battery body is provided between adjacent partition frames, which can meet the size requirements of the module battery body; and adjacent module battery bodies are not in direct contact with each other, and when a module battery body has a high temperature abnormality, the adjacent module battery body will not be affected by the contact.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a modular lithium-ion power battery. Background Art

[0002] With the vigorous development of electric vehicles and energy storage industries, the cruising range of electric vehicles has become the focus of attention, and lightweight battery boxes are undoubtedly the key to improving the cruising range. The battery box of a pure electric vehicle is mainly composed of batteries, series-parallel connection bars between batteries, a battery management system, and a heat dissipation or heating system. The weight of the battery accounts for about 70% to 85% of the weight of the entire battery box. Therefore, the fundamental way to improve the cruising range is to reduce the weight or volume of the battery itself, increase the mass energy density and volume energy density of the battery, and thus significantly increase the cruising range of pure electric vehicles.

[0003] Usually, multiple module battery bodies are arranged in a battery box, and the battery box does not have any components separating the module battery bodies, so that adjacent module battery bodies are in contact with each other. When a module battery body is abnormally hot, it will affect the adjacent contacting module battery bodies; and the separation components cannot be adjusted in position according to the actual width of the module battery body. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a modular lithium-ion power battery, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a modular lithium-ion power battery, comprising a battery box, a support plate fixed inside the battery box, a bottom opening opened on the surface of the support plate, a variable distance adjustment component is arranged inside the support plate battery box, a plurality of partition frames are arranged on the variable distance adjustment component, and a module battery body is arranged between the partition frames;

[0006] The variable pitch adjustment assembly includes two guide rods fixed between the inner walls of the battery box and a screw rod rotatably inserted between the inner walls of the battery box. A plurality of equidistant blocks are arranged on the guide rods. The block located on the far right is fixedly connected to the inner wall of the battery box, and the remaining blocks are slidably arranged on the guide rods. The block located on the far left is threadedly arranged on the screw rod, and the remaining blocks are not connected to the screw rod. Each of the blocks is rotatably connected to a connecting rod, and the plurality of connecting rods are rotatably connected at the head and tail.

[0007] Preferably, one end of the screw rod passes through the outside of the battery box and is fixedly connected to a handle.

[0008] Preferably, an installation opening is provided inside the partition frame, a top opening is provided at the top of the installation opening, two vertical fixing bars and a horizontal fixing bar fixed between the vertical fixing bars are fixedly connected inside the installation opening, two groups of heat dissipation components are provided on each of the vertical fixing bars, the two horizontal heat dissipation components are connected by belt transmission, a slider is fixedly connected between the upper and lower belts, a slide groove is provided on the horizontal fixing bar, and one end of the slider is slidably provided inside the slide groove.

[0009] Preferably, a fixing block is fixedly connected to the surface of each vertical fixing bar, and a spring is fixedly connected between the fixing block and the sliding block.

[0010] Preferably, the heat dissipation component includes a rotating shaft rotatably inserted on the vertical fixing bar, a blade is fixedly connected to the front end of the rotating shaft, a pulley is fixedly sleeved on the rotating shaft, and the belt is sleeved on two horizontal pulleys.

[0011] Preferably, heat dissipation vents are provided on both the front and rear sides of the battery box.

[0012] Preferably, two symmetrically arranged mounting plates are fixedly connected to the inner wall of the battery box, a flame retardant box is fixedly installed on the mounting plate, the flame retardant box is filled with sodium bicarbonate powder, a sealing cover is installed on the top of the flame retardant box, and a plurality of air outlet nozzles are connected to the side wall of the flame retardant box.

[0013] The present invention provides a modular lithium-ion power battery, which has the following beneficial effects:

[0014] 1. In the present invention, a variable distance adjustment component is used, which can drive the movement of the other partition frames except the rightmost partition frame, so that the distance between the partition frames can be adjusted with equal distance, and the module battery body is arranged between adjacent partition frames, which can meet the size requirements of the module battery body; and there is no direct contact between adjacent module battery bodies. When a module battery body has an abnormal high temperature, it will not affect the adjacent module battery body due to contact.

[0015] 2. In the present invention, a heat dissipation component, a belt, a slider and a spring are provided. When the vehicle turns, the center of gravity of the slider will be shifted, so that the slider moves inside the slide groove, and at the same time drives the belt to move, so that the belt drives the contacting pulley to rotate. In this way, the pulley drives the blade to rotate through the coaxial rotating shaft to dissipate the heat of the module battery body. In this way, the opportunity when turning is utilized to further dissipate the heat of the module battery body, thereby ensuring that the module battery body operates in a safe state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front perspective structural diagram of a modular lithium-ion power battery proposed by the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the assembly of a modular lithium-ion power battery proposed by the present invention;

[0018] Figure 3 This is a bottom cross-sectional structural diagram of a modular lithium-ion power battery proposed by the present invention;

[0019] Figure 4 for Figure 1 A magnified structural diagram;

[0020] Figure 5 for Figure 1 Enlarged structural diagram at point B.

[0021] In the figure: 1. battery box; 101. heat dissipation port; 2. support plate; 201. bottom opening; 3. pitch adjustment assembly; 301. screw rod; 302. sleeve block; 303. guide rod; 304. connecting rod; 305. handle; 4. partition frame; 401. installation port; 402. top opening; 5. vertical fixing bar; 6. horizontal fixing bar; 7. heat dissipation assembly; 701. pulley; 702. rotating shaft; 703. blade; 8. belt; 9. slider; 10. spring; 11. fixing block; 12. installation plate; 13. flame retardant box; 14. sealing cover; 15. air outlet nozzle; 16. module battery body; 17. slide groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figures 1 to 5 The present invention provides a technical solution: a modular lithium-ion power battery, comprising a battery box 1, a support plate 2 fixed inside the battery box 1, a bottom opening 201 is opened on the surface of the support plate 2, a variable distance adjustment component 3 is arranged inside the battery box 1 of the support plate 2, a plurality of partition frames 4 are arranged on the variable distance adjustment component 3, and a module battery body 16 is arranged between the partition frames 4;

[0024] By adopting the variable distance adjustment component 3, except for the rightmost partition frame 4, the other partition frames 4 can be driven to move, so that the distance between the partition frames 4 can be adjusted with equal distance, and the module battery body 16 is arranged between adjacent partition frames 4, which can meet the size requirements of the module battery body 16; and there is no direct contact between adjacent module battery bodies 16. When a certain module battery body 16 has a high temperature abnormality, it will not affect the adjacent module battery body 16 due to contact.

[0025] In this scheme, if Figure 3 As shown, the variable pitch adjustment assembly 3 includes two guide rods 303 fixed between the inner walls of the battery box 1 and a screw rod 301 rotatably inserted between the inner walls of the battery box 1, and a plurality of equidistant sleeve blocks 302 are arranged on the guide rods 303. The sleeve block 302 located on the far right is fixedly connected to the inner wall of the battery box 1, and the remaining sleeve blocks 302 are slidably arranged on the guide rods 303. The sleeve block 302 located on the far left is threadedly sleeved on the screw rod 301, and the remaining sleeve blocks 302 are not connected to the screw rod 301. Each sleeve block 302 is rotatably connected to a connecting rod 304, and the plurality of connecting rods 304 are rotatably connected at both ends. One end of the screw rod 301 passes through the outside of the battery box 1 and is fixedly connected to a handle 305.

[0026] Turning the handle 305 drives the screw rod 301 to rotate, and the screw rod 301 drives the leftmost block 302 to move to the left. Under the traction of multiple connecting rods 304, the remaining blocks 302 except the rightmost block 302 move to the left synchronously. At this time, the distance between the partition frames 4 is adjusted, so that the distance between the partition frames 4 meets the needs of the module battery body 16. The position of the partition frames 4 is adjusted according to the actual width of the module battery body 16 to expand the applicability. At this time, the module battery body 16 is placed between adjacent partition frames 4 to achieve the spacing purpose. When a module battery body 16 has a high temperature abnormality, it will not affect the adjacent module battery body 16 due to contact.

[0027] In order to dissipate heat for the module battery body 16, an installation opening 401 is opened inside the partition frame 4, and a top opening 402 is opened at the top of the installation opening 401. Two vertical fixing bars 5 and a horizontal fixing bar 6 fixed between the vertical fixing bars 5 are fixedly connected inside the installation opening 401. Two groups of heat dissipation components 7 are arranged on each vertical fixing bar 5. The two horizontal heat dissipation components 7 are connected by a belt 8 transmission. A slider 9 is fixedly connected between the upper and lower belts 8. A slide groove 17 is opened on the horizontal fixing bar 6. One end of the slider 9 is slidably arranged inside the slide groove 17. The slide groove 17 realizes the purpose of guiding the slider 9 so that the slider 9 can only move in the horizontal direction. A fixed block 11 is fixedly connected to the surface of each vertical fixing bar 5, and a spring 10 is fixedly connected between the fixed block 11 and the slider 9.

[0028] The heat dissipation component 7 includes a rotating shaft 702 rotatably inserted on the vertical fixed bar 5, a blade 703 is fixedly connected to the front end of the rotating shaft 702, a pulley 701 is fixedly sleeved on the rotating shaft 702, and a belt 8 is sleeved on two horizontal pulleys 701. The belt 8 is set tightly and will not fall off.

[0029] When the vehicle is turning, the center of gravity of the slider 9 will shift to one side, so that the slider 9 moves inside the slide groove 17, and the springs 10 on both sides of the slider 9 are compressed and stretched respectively. The slider 9 drives the belt 8 to move at the same time, so that the belt 8 drives the contacting pulley 701 to rotate, so that the pulley 701 drives the blade 703 to rotate through the coaxial shaft 702 to dissipate heat to the module battery body 16. In this way, the opportunity when turning is utilized to further dissipate heat to the module battery body 16 to ensure that the module battery body 16 runs in a safe state. When the car turns the steering wheel back, the springs 10 on both sides of the slider 9 release the elastic force, so that the slider 9 moves in the opposite direction and resets, at this time driving the belt 8 to move in the opposite direction, and the pulley 701 rotates in the opposite direction, so that the shaft 702 and the blade 703 rotate in the opposite direction, and heat dissipation is realized again.

[0030] In order to discharge the heat inside the battery box 1 , heat dissipation openings 101 are provided on both the front and rear sides of the battery box 1 , and the heat inside the battery box 1 passes through the heat dissipation openings 101 .

[0031] When the module battery body 16 generates flames at high temperature, in order to timely flame retard the module battery body 16, two symmetrically arranged mounting plates 12 are fixedly connected to the inner wall of the battery box 1, and a flame retardant box 13 is fixedly installed on the mounting plate 12. The flame retardant box 13 is filled with sodium bicarbonate powder, and a sealing cover 14 is installed on the top of the flame retardant box 13. The sealing cover 14 and the flame retardant box 13 can be threaded or plug-in connected. After disassembly, it is convenient to add sodium bicarbonate powder to the flame retardant box 13. The side wall of the flame retardant box 13 is connected and provided with multiple air outlet nozzles 15. A battery cover is provided on the top of the battery box 1, which is not drawn in the figure, to achieve the sealing work of the battery box 1;

[0032] When the module battery body 16 is abnormal, high temperature or flames will be generated, causing the temperature inside the battery box 1 to rise. When a certain temperature is reached, the sodium bicarbonate powder inside the flame retardant box 13 decomposes to produce carbon dioxide, which is discharged through multiple air outlets 15, filling the battery box 1 with carbon dioxide, thereby flame retardant the module battery body 16 where flames have occurred, thereby preventing the fire from spreading further.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A modular lithium-ion power battery, characterized in that: It comprises a battery box (1), a support plate (2) fixed inside the battery box (1), a bottom opening (201) being provided on the surface of the support plate (2), a variable distance adjustment component (3) being provided inside the battery box (1) of the support plate (2), a plurality of partition frames (4) being provided on the variable distance adjustment component (3), and a module battery body (16) being provided between the partition frames (4); The variable pitch adjustment assembly (3) comprises two guide rods (303) fixed between the inner walls of the battery box (1) and a screw rod (301) rotatably inserted between the inner walls of the battery box (1); a plurality of equally spaced sleeves (302) are arranged on the guide rods (303); the sleeve block (302) located on the far right is fixedly connected to the inner wall of the battery box (1); the remaining sleeve blocks (302) are slidably arranged on the guide rods (303); the sleeve block (302) located on the far left is threadably sleeved on the screw rod (301); the remaining sleeve blocks (302) are not connected to the screw rod (301); each sleeve block (302) is rotatably connected to a connecting rod (304); and the plurality of connecting rods (304) are rotatably connected at their ends; The partition frame (4) is provided with an installation opening (401) inside, and a top opening (402) is provided at the top of the installation opening (401). Two vertical fixing bars (5) and a horizontal fixing bar (6) fixed between the vertical fixing bars (5) are fixedly connected inside the installation opening (401). Two groups of heat dissipation components (7) are provided on each of the vertical fixing bars (5). The two horizontal heat dissipation components (7) are connected to each other through a belt (8) transmission. A slider (9) is fixedly connected between the upper and lower belts (8). A slide groove (17) is provided on the horizontal fixing bar (6), and one end of the slider (9) is slidably arranged inside the slide groove (17). A fixing block (11) is fixedly connected to the surface of each vertical fixing bar (5), and a spring (10) is fixedly connected between the fixing block (11) and the slider (9); The heat dissipation component (7) comprises a rotating shaft (702) rotatably inserted on the vertical fixing bar (5), a blade (703) is fixedly connected to the front end of the rotating shaft (702), a belt pulley (701) is fixedly sleeved on the rotating shaft (702), and the belt (8) is sleeved on two horizontal belt pulleys (701).

2. A modular lithium-ion power battery according to claim 1, characterized in that: One end of the screw rod (301) passes through the outside of the battery box (1) and is fixedly connected to a handle (305).

3. A modular lithium-ion power battery according to claim 1, characterized in that: The battery box (1) is provided with heat dissipation openings (101) on both the front and rear sides.

4. A modular lithium-ion power battery according to claim 1, characterized in that: The battery box (1) has two symmetrically arranged mounting plates (12) fixedly connected to its inner wall, a flame retardant box (13) fixedly mounted on the mounting plate (12), the flame retardant box (13) being filled with sodium bicarbonate powder, a sealing cover (14) being mounted on the top of the flame retardant box (13), and a plurality of air outlet nozzles (15) being arranged in communication with the side wall of the flame retardant box (13).

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