Long-life battery

Abstract

The invention relates to the technical field of batteries, in particular to a long-life battery. Comprising a base, a second air cooling assembly is installed on the base, vertical plates are fixed to the front side and the rear side of the base, first air cooling assemblies are arranged on the vertical plates, a plurality of battery units are placed on the base between the two vertical plates, the lower ends of the adjacent battery units are hinged, and sliding rods are slidably arranged at the left end and the right end of the base; the base on one side of the vertical plate is rotationally connected with a two-way lead screw, the two sliding rods are in threaded connection with threaded sections on the two sides of the two-way lead screw respectively, the threaded sections on the two sides of the two-way lead screw are in threaded connection with sliding blocks, the sliding blocks are rotationally connected with connecting rods, and the two connecting rods are rotationally connected with the fixing plate; and the fixed plate is fixedly connected with the battery unit in the middle. When the heat dissipation efficiency of the battery units needs to be increased, the plurality of battery units are radially dispersed, and the contacted heat dissipation pieces are separated, so that the heat dissipation area is increased.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, and in particular to a long-life battery. Background Art

[0002] The battery is the core component of the electric vehicle, and its performance directly affects the performance of the electric vehicle. Today's electric vehicle batteries are generally cooled by natural cooling, air cooling or water cooling. If the temperature is too high during the operation of the battery, the battery life and charging and discharging effect will be reduced.

[0003] The current battery cooling methods are generally single and independent, and the battery assembly structure is mainly fixed assembly. Among them, water cooling generally uses a large flow of circulating water to force cool the battery core, or force cool the battery shell. In this process, the cooling water often completes a large cycle in all battery cells, that is, it flows from one end of the battery pack to the other end. If the number of batteries is large, the temperature difference of the cooling medium at the beginning and end of cooling is more than tens of degrees, making the temperature of different parts of the battery extremely uneven. This phenomenon will cause individual differences between batteries connected in series and parallel, thereby affecting the overall performance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a long-life battery which can improve the cooling efficiency of the battery and ensure the temperature balance of different parts in the battery.

[0005] In order to achieve the above object, the technical solution provided by the present invention is:

[0006] The battery pack of claim 1, wherein the first and second air-cooling assemblies are arranged on the base and the second and third air-cooling assemblies are arranged on the base. The battery pack of claim 1, wherein the first and second air-cooling assemblies are arranged on the base and the second and third ...

[0007] Specifically, the number of battery cells is an odd number, and the fixing plate is fixedly connected to a central battery cell.

[0008] Specifically, the second air cooling component includes a second vent opened on the base, and a second fan is installed in the second vent. The first air cooling component includes a first vent opened on the vertical plate, and a first fan is installed in the first vent.

[0009] Specifically, connection blocks are fixed at the lower ends of both the front and rear sides of the battery unit, two adjacent connection blocks are hingedly connected, and the slide bar is hingedly connected to the connection block on one side thereof.

[0010] Specifically, the liquid cooling assembly includes a hollow heat sink with multiple partitions fixed inside the heat sink, two inlet ends fixedly connected in the middle of the upper end of the heat sink, and outlet ends fixedly connected on both the front and rear sides of the heat sink.

[0011] Specifically, two adjacent partitions inside the heat sink are arranged in an up-and-down staggered manner, and the multiple partitions inside the heat sink form a serpentine channel inside the heat sink.

[0012] Specifically, a slide groove is provided on the base, and the slide rod is slidably engaged in the slide groove.

[0013] Specifically, the distance between the upper ends of the two connecting rods is smaller than the distance between the lower ends of the two connecting rods.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the heat dissipation efficiency of the battery unit needs to be increased, the present invention starts the bidirectional lead screw, so that the fixed plate drives the central battery unit upward, and at the same time, the two sliding rods approach each other and squeeze multiple battery units, so that the multiple battery units spread out in a radial shape, and the contacting heat dissipating parts are separated, thereby increasing the heat dissipation area, and achieving effective heat dissipation of the battery unit.

[0016] 2. After the multiple battery cells are spread out in a radial shape, a gap is generated between the lower end of the battery cell and the base, and the second air cooling component is started to dissipate the heat from the lower end of the battery cell, thereby further accelerating the heat dissipation efficiency of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the present invention.

[0018] Figure 2 It is a bottom view of the present invention.

[0019] Figure 3 Schematic diagram of the connection between the battery unit and the sliding rod.

[0020] Figure 4 A cross-sectional view of a heat sink.

[0021] Figure 5 It is a schematic diagram of multiple battery cells spread out in a radial shape.

[0022] The names of the parts in the accompanying drawings are: 1. base; 2. vertical plate; 3. first vent; 4. first fan; 5. battery unit; 6. heat sink; 7. inlet end; 8. partition; 9. outlet end; 10. second vent; 11. second fan; 12. motor; 13. bidirectional screw; 14. slide rod; 15. connecting block; 16. slider; 17. connecting rod; 18. fixing plate; 19. slide groove. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 5 As shown, a long-life battery comprises a base 1, on which a second air cooling assembly is mounted. The second air cooling assembly comprises a second vent 10 opened on the base 1, in which a second fan 11 is mounted.

[0024] Vertical plates 2 are fixed to both the front and rear sides of the base 1, and first air cooling components are arranged on the vertical plates 2. The first air cooling components include first vents 3 opened on the vertical plates 2, and first fans 4 are installed in the first vents 3.

[0025] A plurality of battery cells 5 are placed on the base 1 between the two upright plates 2, and the lower ends of adjacent battery cells 5 are hingedly connected. Specifically, connection blocks 15 are fixed to the lower ends of both front and rear sides of the battery cells 5, and two adjacent connection blocks 15 are hingedly connected.

[0026] The left and right ends of the battery unit 5 are both fixed with liquid cooling components, and the adjacent two liquid cooling components are in contact. The liquid cooling component includes a hollow heat sink 6, a plurality of partitions 8 are fixed inside the heat sink 6, two inlet ports 7 are fixedly connected in the middle of the upper end of the heat sink 6, and outlet ports 9 are fixedly connected on both the front and rear sides of the heat sink 6. The cooling medium enters the heat sink 6 through the two inlet ports 7 and is discharged through the two outlet ports 9 respectively, and the battery unit 5 can be effectively cooled by the cooling medium.

[0027] The two adjacent partitions 8 inside the heat sink 6 are staggered up and down, and the multiple partitions 8 inside the heat sink 6 form a serpentine channel inside the heat sink 6. By providing multiple partitions 8, the contact area between the cooling medium and the heat sink 6 and the flow time of the cooling medium in the heat sink 6 can be increased, further ensuring the cooling effect on the battery unit 5.

[0028] Slide bars 14 are slidably provided at both left and right ends of the base 1, and the slide bars 14 can slide in the left and right directions of the base 1. Specifically, a slide groove 19 is provided on the base 1, and the slide bars 14 are slidably engaged in the slide groove 19. A plurality of battery cells 5 are located between the two slide bars 14, and the slide bars 14 are hingedly connected to the lower ends of the battery cells 5 on one side thereof. Specifically, the slide bars 14 are hingedly connected to the connecting blocks 15 on one side thereof.

[0029] A bidirectional lead screw 13 is rotatably connected to the base 1 on one side of the vertical plate 2. The axial direction of the bidirectional lead screw 13 is parallel to the left-right direction of the base 1. Two slide bars 14 are respectively threadedly connected to the threaded sections on both sides of the bidirectional lead screw 13. Slide blocks 16 are threadedly connected to the threaded sections on both sides of the bidirectional lead screw 13. Connecting rods 17 are rotatably connected to the sliders 16. The connecting rods 17 are tilted. The two connecting rods 17 are symmetrical about the center point of the bidirectional lead screw 13. The two connecting rods 17 are rotatably connected to the fixing plate 18. The distance between the upper ends of the two connecting rods 17 is smaller than the distance between the lower ends of the two connecting rods 17. The fixing plate 18 is fixedly connected to the central battery unit 5. A motor 12 for driving the bidirectional lead screw 13 to rotate is fixed to the base 1.

[0030] The number of the battery cells 5 is an odd number, and the fixing plate 18 is fixedly connected to a central battery cell 5 .

[0031] When the battery unit 5 works normally, the cooling medium enters the heat sink 6 through the inlet end 7 and is discharged through the outlet end 9. The cooling medium is used to dissipate heat from the battery unit 5. At the same time, the first fan 4 is started, and the first fan 4 allows air to flow to cool the battery unit 5.

[0032] When it is necessary to improve the cooling efficiency of the battery cell 5, the motor 12 is started, and the motor 12 drives the bidirectional lead screw 13 to rotate. During the rotation of the bidirectional lead screw 13, the two sliders 16 approach each other, and the slider 16 drives the fixed plate 18 and the central battery cell 5 upward through the connecting rod 17. At the same time, the two sliders 14 approach each other and squeeze the multiple battery cells 5. During the upward movement of the central battery cell 5, the two adjacent battery cells 5 rotate relative to each other, and the multiple battery cells 5 are scattered in a radiating shape. At this time, the adjacent heat sinks 6 are separated from each other, and a gap is generated between the lower end of the battery cell 5 and the base 1. After the adjacent heat sinks 6 are separated, a gap is generated between the adjacent heat sinks 6, and the heat dissipation area of ​​the heat sink 6 is increased. At the same time, under the action of the first fan 4, the heat dissipation efficiency of the battery cell 5 can be improved. Then the second fan 11 is started, and the second fan 11 can make the air flow in the gap between the base 1 and the battery cell 5, which can further improve the heat dissipation efficiency of the battery cell 5.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A long-life battery, comprising a base (1), a second air-cooling assembly being mounted on the base (1), vertical plates (2) being fixed on both the front and rear sides of the base (1), and first air-cooling assemblies being arranged on the vertical plates (2), It is characterized in that A plurality of battery cells (5) are placed on the base (1) between the two vertical plates (2), the lower ends of adjacent battery cells (5) are hingedly connected, the left and right ends of the battery cells (5) are fixed with liquid cooling components, the two adjacent liquid cooling components are in contact, the left and right ends of the base (1) are slidably provided with slide bars (14), the slide bars (14) can slide in the left and right directions of the base (1), the plurality of battery cells (5) are located between the two slide bars (14), the slide bars (14) are hingedly connected to the lower ends of the battery cells (5) on one side thereof, a bidirectional lead screw (13) is rotatably connected to the base (1) on one side of the vertical plate (2), the axial direction of the bidirectional lead screw (13) is The two slide bars (14) are respectively threadedly connected to the threaded sections on both sides of the bidirectional lead screw (13); the threaded sections on both sides of the bidirectional lead screw (13) are threadedly connected to sliders (16); the sliders (16) are rotatably connected to connecting rods (17); the connecting rods (17) are tiltedly arranged; the two connecting rods (17) are symmetrical about the center point of the bidirectional lead screw (13); the two connecting rods (17) are rotatably connected to a fixing plate (18); the fixing plate (18) is fixedly connected to a central battery unit (5); and a motor (12) for driving the bidirectional lead screw (13) to rotate is fixed on the base (1).

2. A long-life battery according to claim 1, It is characterized in that The second air cooling component comprises a second ventilation opening (10) opened on the base (1), and a second fan (11) is installed in the second ventilation opening (10).

3. A long-life battery according to claim 1, It is characterized in that The first air cooling component comprises a first ventilation opening (3) opened on the vertical plate (2), and a first fan (4) is installed in the first ventilation opening (3).

4. A long-life battery according to claim 1, It is characterized in that The lower ends of the front and rear sides of the battery unit (5) are both fixed with connection blocks (15), two adjacent connection blocks (15) are hingedly connected, and the slide bar (14) is hingedly connected to the connection block (15) on one side thereof.

5. A long-life battery according to claim 1, It is characterized in that The liquid cooling component comprises a hollow heat sink (6), a plurality of partitions (8) are fixed inside the heat sink (6), two inlet ends (7) are fixedly connected in the middle of the upper end of the heat sink (6), and outlet ends (9) are fixedly connected on both the front and rear sides of the heat sink (6).

6. A long-life battery according to claim 5, It is characterized in that Two adjacent partitions (8) inside the heat sink (6) are arranged in an up-and-down staggered manner, and the multiple partitions (8) inside the heat sink (6) form a serpentine channel inside the heat sink (6).

7. A long-life battery according to claim 1, It is characterized in that The base (1) is provided with a slide groove (19), and the slide rod (14) is slidably engaged in the slide groove (19).

8. A long-life battery according to claim 1, It is characterized in that The number of the battery cells (5) is an odd number, and the fixing plate (18) is fixedly connected to a central battery cell (5).

9. A long-life battery according to claim 1, It is characterized in that The distance between the upper ends of the two connecting rods (17) is smaller than the distance between the lower ends of the two connecting rods (17).

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