Power battery module and power battery box having the same

Abstract

The present invention belongs to the field of power battery technology, in particular to a power battery module and a power battery box with the power battery module. In view of the problems in the prior art that the installation and disassembly are cumbersome and inconvenient for later repair, the heat emitted by the battery cells cannot be discharged in time, and the battery box has too many fixed structures, resulting in poor heat dissipation effect, the following solution is proposed, which includes: a lower cover, an upper cover arranged above the lower cover, a plurality of battery cells are clamped between the lower cover and the upper cover, the inner walls of the lower cover and the upper cover on the side away from each other are provided with a plurality of placement grooves, and the spacing between two adjacent placement grooves is 0.3CM-0.5CM, and the lower connecting assembly is arranged in the lower cover for keeping the battery cells in a passage state. In the present invention, the lower cover and the upper cover can be easily and quickly clamped and fixed to the battery cells by pressing the upper cover, and the trapezoidal block can be released from the clamping of the upper cover by rotating the U-shaped handle and pulling it upward, so that the lower cover and the upper cover can be disassembled, which can facilitate the later repair and replacement of the battery cells.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a power battery module and a power battery box having the power battery module. Background Art

[0002] As the primary energy storage device in new energy electric vehicles (EVs), battery packs are key components of EVs, and their technical level is crucial to determining the performance of these vehicles. As EVs gain market share, the requirements for battery systems are becoming increasingly stringent.

[0003] However, the battery modules in the prior art still have the following deficiencies:

[0004] 1. In the prior art, battery modules are basically clamped and fixed by the upper and lower covers using multiple bolts or multiple clips. Due to the large number of cells, the cells cannot be accurately connected to the electrical contacts during the clamping process, so the installation is cumbersome. In addition, in the event of a failure or recycling, it is not convenient to disassemble and maintain.

[0005] 2. Multiple battery cells are clamped and fixed by the upper and lower covers. However, the number of battery cells is large and they are densely arranged. As a result, the heat generated by the battery cells cannot be discharged in time during later use, causing the battery cells to overheat and shorten their lifespan. In severe cases, they are prone to explosion.

[0006] 3. When placing the battery module in the battery box, a fixing structure is often provided in the battery box to facilitate fixing the battery module in the battery box. However, when there are too many fixing structures in the battery box, the ventilation and heat dissipation effects inside the battery box are seriously hindered.

[0007] In response to the above problems, the present invention document proposes a power battery module and a power battery box having the power battery module. Summary of the Invention

[0008] The present invention provides a power battery module and a power battery box having the power battery module, which solves the shortcomings of the prior art such as cumbersome installation and disassembly, inconvenient subsequent repair, inability to discharge heat emitted by the battery cells in a timely manner, and poor heat dissipation effect resulting from excessive fixed structures in the battery box.

[0009] The present invention provides the following technical solutions:

[0010] A power battery module includes: a lower cover, an upper cover arranged above the lower cover, a plurality of battery cells clamped between the lower cover and the upper cover, a plurality of placement grooves are provided on the inner wall of the side of the lower cover and the upper cover away from each other, and the spacing between two adjacent placement grooves is 0.3cm-0.5cm;

[0011] The lower connecting assembly is arranged in the lower cover and is used to keep the battery cell in a conductive state;

[0012] The upper connecting assembly is arranged in the upper cover and is used to keep the battery cells in a connected state;

[0013] The clamping assembly is arranged on the top of the lower cover and is used to fix the lower cover and the upper cover to complete the clamping of the battery cell.

[0014] In one possible design, the lower connecting assembly includes a lower connecting contact network fixedly connected to the lower cover, the top of the lower connecting contact network is fixedly connected to a plurality of lower contact blocks, and the top of the lower contact block is fixedly passed through the bottom inner wall of the placement groove in the lower cover, so as to connect the lower contact block with one of the electrodes of the battery cell, and the bottom of the lower connecting contact network is fixedly connected to the first electrode extending to the bottom of the lower cover.

[0015] In one possible design, the upper connection assembly includes a slide groove arranged in the upper cover, and an upper connection contact network is slidably connected in the slide groove. The top of the upper connection contact network is fixedly connected to a plurality of first springs, and the outer wall of the first spring is wrapped with an insulating rubber layer. The top of the first spring is fixedly connected to the top inner wall of the slide groove, and the bottom of the upper connection contact network is fixedly connected to a plurality of upper contact blocks that slide through the top inner wall of the placement groove in the upper cover, so as to connect the upper contact block with the other electrode of the battery cell. The top of the upper cover is fixedly connected to a second electrode, and the second electrode is electrically connected to the upper connection contact network through a plurality of connecting wires.

[0016] In one possible design, the snap-on assembly includes a plurality of plug rods fixedly connected to both sides of the top of the lower cover, a plurality of sockets matching the plug rods are provided in the upper cover, a sliding groove is provided on the side of the plug rod close to the second electrode, a trapezoidal block for clamping the upper cover is slidably connected in the sliding groove, a second spring is fixedly connected to the inner wall of the trapezoidal block on the side away from the second electrode, and one end of the second spring is fixedly connected to the inner wall of one side of the sliding groove.

[0017] In a possible design, the top of the upper cover is fixedly connected to two fixed blocks, and the fixed blocks are located on both sides of the second electrode, and the side of the fixed block away from the second electrode is fixedly connected to multiple third springs, and the ends of the multiple third springs away from the second electrode are fixedly connected to the same push plate for pushing the trapezoidal block, and the push plate is slidably connected to the top of the upper cover, and the top of the upper cover is rotatably connected to two U-shaped handles through the base, and the side of the push plate close to the second electrode is provided with two circular grooves, one end of the U-shaped handle extends into the circular groove, and the top inner wall of the circular groove is fixedly connected to a slider, and the outer wall of the U-shaped handle is provided with two arc grooves, and the arc grooves are located in the circular groove, and the arc grooves slide in conjunction with the slider.

[0018] In one possible design, a plurality of rubber pads are fixedly connected to the bottom of the lower cover, and a plurality of hollow tubes are fixedly passed through the upper cover. When the battery module is placed in the box, the rubber pads can be stuck in the corresponding limit grooves. When the battery cell heats up, the air temperature between the lower cover and the upper cover rises, and the hot air is discharged upward through the hollow tubes to the outside, further improving the heat dissipation effect.

[0019] A power battery box with a power battery module, used to contain the power battery module as described above, comprises a box body, wherein a fixing assembly for fixing the battery module is provided in the box body;

[0020] The box body is provided with a ventilation component for ventilating the box body.

[0021] In one possible design, the fixing assembly includes a plurality of limiting grooves arranged on the inner wall of the bottom of the box, and the limiting grooves are engaged with the rubber pads, the inner wall of the bottom of the box is fixedly connected with a plurality of first total electrodes engaged with the first electrode, and both sides of the top of the box are fixedly connected with fixing plates, and the side where the two fixing plates are close to each other is rotatably connected with a rotating plate that closes the box, and the bottom of the rotating plate is fixedly connected with a plurality of second total electrodes engaged with the second electrode, and an L-shaped stopper is sliding through the fixed plate to limit the rotating plate, and a bolt is provided on the side of the L-shaped stopper away from the box, and one end of the bolt passes through the L-shaped stopper and is threadedly connected to the box.

[0022] In one possible design, the ventilation assembly includes multiple exhaust vents arranged on one side of the box, and multiple ventilation vents are provided on the other side of the box. Exhaust fans for exhaust are provided in the ventilation vents, and filters for filtering air are provided in the exhaust vents and ventilation vents. The box can be ventilated by the exhaust fans, and no fixed structure is designed between two adjacent battery modules in the box, so that the air in the box can circulate smoothly, thereby improving the heat dissipation effect of the box.

[0023] In a possible design, a first T-slot is provided on one side of the box body, and the first T-slot is staggered with the exhaust port, and a second T-slot is provided on the other side of the box body, and the second T-slot is staggered with the vent, a first T-block is slidably connected in the first T-slot, an end of the first T-block away from the box body is fixedly connected to a vibration-damping spring, an end of the vibration-damping spring away from the first T-block is fixedly connected to a second T-block, and the second T-block cooperates with the second T-slot in the adjacent box body, and when two adjacent boxes are docked, the second T-block is snapped into the second T-slot in the adjacent box body, and the vibration-damping spring can provide a buffering effect between the two adjacent boxes to prevent the two adjacent boxes from colliding with each other.

[0024] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0025] In the present invention, a sliding groove is provided on the side of the insertion rod close to the second electrode, and a trapezoidal clamping block is slidably connected in the sliding groove to clamp the upper cover, and a second spring is fixedly connected to the inner wall of the trapezoidal clamping block on the side away from the second electrode, and one end of the second spring is fixedly connected to the inner wall of one side of the sliding groove. The upper cover is placed on the top of the battery cell, and then the upper cover is pressed downward. Since the upper contact block touches the electrode of the battery cell, the first spring begins to compress. As the upper cover presses the top end of the insertion rod downward and passes through the insertion hole, the trapezoidal clamping block is also located above the upper cover. Under the elastic force of the second spring, the trapezoidal clamping block slides outward and can just clamp the upper cover. By pressing the upper cover, the lower cover and the upper cover can easily be fixed to multiple battery cells, and the installation is simple and quick.

[0026] In the present invention, a plurality of third springs are fixedly connected to a side of the fixed block away from the second electrode, and one end of the plurality of third springs is fixedly connected to a push plate, and a slider is fixedly connected to the top inner wall of the circular groove, and an arc groove is provided on the outer wall of the U-shaped handle, and the arc groove and the slider are slidably matched. When the U-shaped handle is rotated with both hands, the U-shaped handle is in a vertical state, and the arc groove rotates accordingly, and the arc groove cooperates with the slider, so that the slider can drive the push plate to slide in a direction away from the U-shaped handle, and the movement of the push plate can push the trapezoidal block into the sliding groove and squeeze the second spring, thereby releasing the trapezoidal block from clamping the upper cover. By rotating the U-shaped handle and pulling it upward, the lower cover and the upper cover can be disassembled, which can facilitate the maintenance and replacement of the battery cell in the later stage.

[0027] In the present invention, the inner wall of the lower cover and the upper cover on the side away from each other is provided with a plurality of placement grooves, and the distance between two adjacent placement grooves is 0.3CM-0.5CM. The distance between the battery cells is large, which facilitates sufficient space for air flow between the battery cells and facilitates heat dissipation. The upper cover is fixed with a plurality of hollow tubes. When the battery cells heat up, the air temperature between the lower cover and the upper cover rises, and the hot air is discharged to the outside through the hollow tubes, further improving the heat dissipation effect.

[0028] In the present invention, a plurality of limiting grooves are provided on the bottom inner wall of the box body, a plurality of first main electrodes are fixedly connected to the bottom inner wall of the box body, and a plurality of second main electrodes are fixedly connected to the bottom of the rotating plate. When the box body is covered by the rotating plate, the second electrode is inserted into the second main electrode. The battery module can be fixed by the engagement of the limiting grooves, the first main electrode, the second main electrode with the rubber pad, the first electrode and the second electrode, while no fixing structure is designed between two adjacent battery modules in the box body, thereby enabling smooth air circulation in the box body and improving the heat dissipation effect of the box body.

[0029] In the present invention, the lower cover and the upper cover can be pressed to clamp and fix the battery cell easily and quickly. In addition, the trapezoidal block can be released from the upper cover by rotating the U-shaped handle and pulling it upward, and the lower cover and the upper cover can be disassembled, which can facilitate the later maintenance and replacement of the battery cell. In addition, by setting the distance between adjacent placement slots and the setting of the hollow tube, the heat dissipation effect between the lower cover and the upper cover can be increased. At the same time, the battery module can be fixed without designing too many fixing mechanisms in the box, thereby avoiding the fixing mechanisms obstructing ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a power battery module provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of a three-dimensional exploded structure of a power battery module provided by an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a lower cover of a power battery module provided by an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the three-dimensional structure of a lower contact network and a lower contact block of a power battery module provided by an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of a three-dimensional cross-sectional structure of an upper cover of a power battery module provided by an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of the three-dimensional structure of an upper contact network and an upper contact block of a power battery module provided by an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the three-dimensional structure of an upper cover of a power battery module provided by an embodiment of the present invention;

[0037] Figure 8 A schematic diagram of a three-dimensional cross-sectional structure of a push plate of a power battery module provided by an embodiment of the present invention;

[0038] Figure 9 A schematic diagram of a partial three-dimensional cross-sectional structure of a power battery module provided by an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the enlarged structure of position A of a power battery module provided by an embodiment of the present invention;

[0040] Figure 11 A schematic diagram of a three-dimensional exploded structure of a power battery box with a power battery module provided by an embodiment of the present invention;

[0041] Figure 12 A schematic diagram of a three-dimensional cross-sectional structure of a power battery box having a power battery module provided by an embodiment of the present invention;

[0042] Figure 13 This is a schematic diagram of a front cross-sectional structure of a power battery box with a power battery module provided by an embodiment of the present invention in Example 2.

[0043] Reference numerals:

[0044] 1. Lower cover; 2. Upper cover; 3. Placement slot; 4. Lower contact wire; 5. Lower contact block; 6. First electrode; 7. Slide slot; 8. Upper contact wire; 9. First spring; 10. Upper contact block; 11. Connecting wire; 12. Second electrode; 13. Socket; 14. Insertion rod; 15. Slide slot; 16. Second spring; 17. Trapezoidal block; 18. Fixed block; 19. Third spring; 20. Push plate; 21. U-shaped handle; 22. Round groove; 23. Arc shaped slot; 24. Slider; 25. Box; 26. Fixed plate; 27. Rotating plate; 28. L-shaped block; 29. ​​Bolt; 30. Limiting slot; 31. First main electrode; 32. Second main electrode; 33. Exhaust vent; 34. Ventilation vent; 35. Exhaust fan; 36. Filter; 37. Rubber pad; 38. Hollow tube; 39. First T-slot; 40. Second T-slot; 41. First T-block; 42. Damping spring; 43. Second T-block. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described below with reference to the accompanying drawings.

[0046] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0047] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0048] In the embodiments of the present invention, "and / or" is merely a description of the association relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0049] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present invention. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically stated. The terms "including," "comprising," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically stated.

[0050] Example 1

[0051] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5 A power battery module and a power battery box having the power battery module in this embodiment include: a lower cover 1, an upper cover 2 arranged above the lower cover 1, a plurality of battery cells clamped between the lower cover 1 and the upper cover 2, a plurality of placement grooves 3 are provided on the inner wall of the side away from each other of the lower cover 1 and the upper cover 2, and the spacing between two adjacent placement grooves 3 is 0.3CM-0.5CM, a lower connecting component is arranged in the lower cover 1, and is used to keep the battery cells in a passage state, an upper connecting component is arranged in the upper cover 2, and is used to keep the battery cells in a passage state, and a clamping component is arranged on the top of the lower cover 1, and is used to connect the lower cover 1 and the upper cover 2 The battery cells are fixedly connected to each other with a plurality of rubber pads 37, and the upper cover 2 is fixed with a plurality of hollow tubes 38. When the battery module is placed in the box body 25, the rubber pads 37 can be inserted into the corresponding limit grooves 30. When the battery cells are heated, the air temperature between the lower cover 1 and the upper cover 2 rises, and the hot air is discharged to the outside through the hollow tubes 38, thereby further improving the heat dissipation effect. The distance between two adjacent placement slots 3 is 0.3CM-0.5CM, and the battery cell distance is large, so there is sufficient space for air flow between the battery cells, which is convenient for heat dissipation.

[0052] Reference Figure 3 and Figure 4 The lower connecting assembly includes a lower connecting contact network 4 fixedly connected to the lower cover 1, and a plurality of lower contact blocks 5 are fixedly connected to the top of the lower connecting contact network 4, and the top of the lower contact block 5 is fixedly passed through the bottom inner wall of the placement groove 3 in the lower cover 1, so as to connect the lower contact block 5 with one of the electrodes of the battery cell. The bottom of the lower connecting contact network 4 is fixedly connected to the first electrode 6 extending to the bottom of the lower cover 1.

[0053] Reference Figure 5 and Figure 6 The upper connection component includes a slide groove 7 arranged in the upper cover 2, and the upper connection contact network 8 is slidably connected in the slide groove 7. The top of the upper connection contact network 8 is fixedly connected with multiple first springs 9, and the outer wall of the first spring 9 is wrapped with an insulating rubber layer. The top of the first spring 9 is fixedly connected to the top inner wall of the slide groove 7, and the bottom of the upper connection contact network 8 is fixedly connected with multiple upper contact blocks 10 that slide through the top inner wall of the placement groove 3 in the upper cover 2, which is used to connect the upper contact block 10 with the other electrode of the battery cell. The top of the upper cover 2 is fixedly connected with a second electrode 12, and the second electrode 12 is electrically connected to the upper connection contact network 8 through multiple connecting wires 11.

[0054] Reference Figure 9 and Figure 10 The clamping assembly includes a plurality of rods 14 fixedly connected to both sides of the top of the lower cover 1, a plurality of sockets 13 are provided in the upper cover 2 to match the rods 14, a sliding groove 15 is provided on the side of the rod 14 close to the second electrode 12, a trapezoidal block 17 is slidably connected in the sliding groove 15 to clamp the upper cover 2, and a second spring 16 is fixedly connected to the inner wall of the side of the trapezoidal block 17 away from the second electrode 12, and one end of the second spring 16 is fixedly connected to the inner wall of one side of the sliding groove 15, so that the upper cover 2 is clamped. The cover 2 is placed on the top of the battery cell, and then the upper cover 2 is pressed downward. As the upper contact block 10 touches the electrode of the battery cell, the first spring 9 begins to compress. As the upper cover 2 presses downward, the top of the insertion rod 14 passes through the insertion hole 13. The trapezoidal block 17 is also located above the upper cover 2. The trapezoidal block 17 slides outward under the elastic force of the second spring 16 and can just clamp the upper cover 2. By pressing the upper cover 2, the lower cover 1 and the upper cover 2 can be easily fixed to multiple battery cells. The installation is simple and quick.

[0055] Reference Figure 5 and Figure 8, the top of the upper cover 2 is fixedly connected to two fixed blocks 18 and the fixed blocks 18 are located on both sides of the second electrode 12, and the side of the fixed block 18 away from the second electrode 12 is fixedly connected to multiple third springs 19, and the end of the multiple third springs 19 away from the second electrode 12 is fixedly connected to the same push plate 20 for pushing the trapezoidal block 17, and the push plate 20 is slidably connected to the top of the upper cover 2, and the top of the upper cover 2 is rotatably connected to two U-shaped handles 21, and the side of the push plate 20 close to the second electrode 12 is provided with two circular grooves 22, one end of the U-shaped handle 21 extends into the circular groove 22, and the top inner wall of the circular groove 22 is fixedly connected to a slider 24, and the U-shaped handle 21 The outer wall of the battery pack is provided with two arc grooves 23, and the arc grooves 23 are located in the circular grooves 22. The arc grooves 23 slide with the sliders 24. Both hands rotate the U-shaped handle 21 to make the U-shaped handle 21 vertical, and the arc grooves 23 rotate accordingly. The arc grooves 23 cooperate with the sliders 24, and then the sliders 24 can drive the push plate 20 to slide in the direction away from the U-shaped handle 21, and the movement of the push plate 20 can push the trapezoidal block 17 into the sliding groove 15 and squeeze the second spring 16, thereby releasing the trapezoidal block 17 from the upper cover 2. By rotating the U-shaped handle 21 and pulling it upward, the lower cover 1 and the upper cover 2 can be disassembled, which can facilitate the maintenance and replacement of the battery cells in the later stage.

[0056] Reference Figure 11 and Figure 12 A power battery box with a power battery module is used to hold the power battery module as described above, including a box body 25, a fixing assembly for fixing the battery module is provided in the box body 25, and a ventilation assembly for ventilating the box body 25 is provided in the box body 25.

[0057] Reference Figure 11The fixing assembly includes a plurality of limiting grooves 30 provided on the inner wall at the bottom of the box body 25, and the limiting grooves 30 are engaged with the rubber pads 37. The inner wall at the bottom of the box body 25 is fixedly connected with a plurality of first total electrodes 31 engaged with the first electrode 6. The top two sides of the box body 25 are fixedly connected with fixed plates 26. The side where the two fixed plates 26 are close to each other is rotatably connected with a rotating plate 27 that closes the box body 25. The bottom of the rotating plate 27 is fixedly connected with a plurality of second total electrodes 32 engaged with the second electrode 12. An L-shaped stopper 28 is slidably passed through the fixed plate 26 to limit the rotating plate 27. A bolt 29 is provided on the side of the L-shaped stopper 28 away from the box body 25, and one end of the bolt 29 passes through the L-shaped stopper 28 and is threadedly connected to the box body 25. When the box body 25 is covered by the rotating plate 27, the second electrode 12 is inserted into the second total electrode 32. The battery module can be fixed by the engagement of the rubber gasket 37, the first electrode 6 and the second electrode 12 through the limiting groove 30, the first total electrode 31 and the second total electrode 32. There is no fixed structure designed between the two adjacent battery modules in the box body 25, so that the air in the box body 25 can circulate smoothly, thereby improving the heat dissipation effect of the box body 25.

[0058] Reference Figure 12 The ventilation assembly includes a plurality of exhaust ports 33 arranged on one side of the box body 25, and a plurality of ventilation ports 34 are provided on the other side of the box body 25. An exhaust fan 35 for exhausting air is provided in the ventilation port 34, and a filter screen 36 for filtering the air is provided in the exhaust port 33 and the ventilation port 34. The box body 25 can be ventilated by the exhaust fan 35, and no fixed structure is designed between two adjacent battery modules in the box body 25, so that the air in the box body 25 can circulate smoothly, thereby improving the heat dissipation effect of the box body 25.

[0059] Example 2

[0060] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5A power battery module and a power battery box having the power battery module in this embodiment include: a lower cover 1, an upper cover 2 arranged above the lower cover 1, a plurality of battery cells clamped between the lower cover 1 and the upper cover 2, a plurality of placement grooves 3 are provided on the inner wall of the side away from each other of the lower cover 1 and the upper cover 2, and the spacing between two adjacent placement grooves 3 is 0.3CM-0.5CM, a lower connecting component is arranged in the lower cover 1, and is used to keep the battery cells in a passage state, an upper connecting component is arranged in the upper cover 2, and is used to keep the battery cells in a passage state, and a clamping component is arranged on the top of the lower cover 1, and is used to connect the lower cover 1 and the upper cover 2 The battery cells are fixedly connected to each other with a plurality of rubber pads 37, and the upper cover 2 is fixed with a plurality of hollow tubes 38. When the battery module is placed in the box body 25, the rubber pads 37 can be inserted into the corresponding limit grooves 30. When the battery cells are heated, the air temperature between the lower cover 1 and the upper cover 2 rises, and the hot air is discharged to the outside through the hollow tubes 38, thereby further improving the heat dissipation effect. The distance between two adjacent placement slots 3 is 0.3CM-0.5CM, and the battery cell distance is large, so there is sufficient space for air flow between the battery cells, which is convenient for heat dissipation.

[0061] Reference Figure 3 and Figure 4 The lower connecting assembly includes a lower connecting contact network 4 fixedly connected to the lower cover 1, and a plurality of lower contact blocks 5 are fixedly connected to the top of the lower connecting contact network 4, and the top of the lower contact block 5 is fixedly passed through the bottom inner wall of the placement groove 3 in the lower cover 1, so as to connect the lower contact block 5 with one of the electrodes of the battery cell. The bottom of the lower connecting contact network 4 is fixedly connected to the first electrode 6 extending to the bottom of the lower cover 1.

[0062] Reference Figure 5 and Figure 6 The upper connection component includes a slide groove 7 arranged in the upper cover 2, and the upper connection contact network 8 is slidably connected in the slide groove 7. The top of the upper connection contact network 8 is fixedly connected with multiple first springs 9, and the outer wall of the first spring 9 is wrapped with an insulating rubber layer. The top of the first spring 9 is fixedly connected to the top inner wall of the slide groove 7, and the bottom of the upper connection contact network 8 is fixedly connected with multiple upper contact blocks 10 that slide through the top inner wall of the placement groove 3 in the upper cover 2, which is used to connect the upper contact block 10 with the other electrode of the battery cell. The top of the upper cover 2 is fixedly connected with a second electrode 12, and the second electrode 12 is electrically connected to the upper connection contact network 8 through multiple connecting wires 11.

[0063] Reference Figure 9 and Figure 10The clamping assembly includes a plurality of rods 14 fixedly connected to both sides of the top of the lower cover 1, a plurality of sockets 13 are provided in the upper cover 2 to match the rods 14, a sliding groove 15 is provided on the side of the rod 14 close to the second electrode 12, a trapezoidal block 17 is slidably connected in the sliding groove 15 to clamp the upper cover 2, and a second spring 16 is fixedly connected to the inner wall of the side of the trapezoidal block 17 away from the second electrode 12, and one end of the second spring 16 is fixedly connected to the inner wall of one side of the sliding groove 15, so that the upper cover 2 is clamped. The cover 2 is placed on the top of the battery cell, and then the upper cover 2 is pressed downward. As the upper contact block 10 touches the electrode of the battery cell, the first spring 9 begins to compress. As the upper cover 2 presses downward, the top of the insertion rod 14 passes through the insertion hole 13. The trapezoidal block 17 is also located above the upper cover 2. The trapezoidal block 17 slides outward under the elastic force of the second spring 16 and can just clamp the upper cover 2. By pressing the upper cover 2, the lower cover 1 and the upper cover 2 can be easily fixed to multiple battery cells. The installation is simple and quick.

[0064] Reference Figure 5 and Figure 8 , the top of the upper cover 2 is fixedly connected to two fixed blocks 18 and the fixed blocks 18 are located on both sides of the second electrode 12, and the side of the fixed block 18 away from the second electrode 12 is fixedly connected to multiple third springs 19, and the end of the multiple third springs 19 away from the second electrode 12 is fixedly connected to the same push plate 20 for pushing the trapezoidal block 17, and the push plate 20 is slidably connected to the top of the upper cover 2, and the top of the upper cover 2 is rotatably connected to two U-shaped handles 21, and the side of the push plate 20 close to the second electrode 12 is provided with two circular grooves 22, one end of the U-shaped handle 21 extends into the circular groove 22, and the top inner wall of the circular groove 22 is fixedly connected to a slider 24, and the U-shaped handle 21 The outer wall of the battery pack is provided with two arc grooves 23, and the arc grooves 23 are located in the circular grooves 22. The arc grooves 23 slide with the sliders 24. Both hands rotate the U-shaped handle 21 to make the U-shaped handle 21 vertical, and the arc grooves 23 rotate accordingly. The arc grooves 23 cooperate with the sliders 24, and then the sliders 24 can drive the push plate 20 to slide in the direction away from the U-shaped handle 21, and the movement of the push plate 20 can push the trapezoidal block 17 into the sliding groove 15 and squeeze the second spring 16, thereby releasing the trapezoidal block 17 from the upper cover 2. By rotating the U-shaped handle 21 and pulling it upward, the lower cover 1 and the upper cover 2 can be disassembled, which can facilitate the maintenance and replacement of the battery cells in the later stage.

[0065] Reference Figure 11 and Figure 12 A power battery box with a power battery module is used to hold the power battery module as described above, including a box body 25, a fixing assembly for fixing the battery module is provided in the box body 25, and a ventilation assembly for ventilating the box body 25 is provided in the box body 25.

[0066] Reference Figure 11The fixing assembly includes a plurality of limiting grooves 30 provided on the inner wall at the bottom of the box body 25, and the limiting grooves 30 are engaged with the rubber pads 37. The inner wall at the bottom of the box body 25 is fixedly connected with a plurality of first total electrodes 31 engaged with the first electrode 6. The top two sides of the box body 25 are fixedly connected with fixing plates 26. The side where the two fixing plates 26 are close to each other is rotatably connected with a rotating plate 27 that closes the box body 25. The bottom of the rotating plate 27 is fixedly connected with a plurality of second total electrodes 32 engaged with the second electrode 12. An L-shaped stopper 28 is slidably penetrated in the fixed plate 26 to limit the rotating plate 27. A bolt 29 is provided on the side of the L-shaped stopper 28 away from the box body 25, and one end of the bolt 29 passes through the L-shaped stopper 28 and is threadedly connected to the box body 25. When the box body 25 is covered by the rotating plate 27, the second electrode 12 is inserted into the second main electrode 32. The battery module can be fixed by the engagement of the rubber pad 37, the first electrode 6 and the second electrode 12 through the limiting groove 30, the first main electrode 31 and the second main electrode 32. There is no fixed structure designed between the two adjacent battery modules in the box body 25, so that the air in the box body 25 can circulate smoothly, thereby improving the heat dissipation effect of the box body 25.

[0067] Reference Figure 12 The ventilation assembly includes a plurality of exhaust ports 33 arranged on one side of the box body 25, and a plurality of ventilation ports 34 are provided on the other side of the box body 25. An exhaust fan 35 for exhausting air is provided in the ventilation port 34, and a filter screen 36 for filtering the air is provided in the exhaust port 33 and the ventilation port 34. The box body 25 can be ventilated by the exhaust fan 35, and no fixed structure is designed between two adjacent battery modules in the box body 25, so that the air in the box body 25 can circulate smoothly, thereby improving the heat dissipation effect of the box body 25.

[0068] Reference Figure 13 A first T-slot 39 is provided on one side of the box body 25, and the first T-slot 39 is staggered with the exhaust port 33, and a second T-slot 40 is provided on the other side of the box body 25, and the second T-slot 40 is staggered with the vent 34, a first T-block 41 is slidably connected in the first T-slot 39, and the end of the first T-block 41 away from the box body 25 is fixedly connected to a damping spring 42, and the end of the damping spring 42 away from the first T-block 41 is fixedly connected to a second T-block 43, and the second T-block 43 cooperates with the second T-slot 40 in the adjacent box body 25. When the two adjacent boxes 25 are docked, the second T-block 43 is snapped into the second T-slot 40 in the adjacent box body 25. The damping spring 42 can provide a buffering effect between the two adjacent boxes 25, thereby preventing the two adjacent boxes 25 from colliding with each other.

[0069] Working principle: Loosen the bolt 29 to release the fixation of the L-shaped stopper 28 and the box body 25, remove the L-shaped stopper 28 to release the brake of the rotating plate 27 by the L-shaped stopper 28, rotate the rotating plate 27 to open the box body 25, and during the rotation of the rotating plate 27, the second total electrode 32 is disengaged from the second electrode 12, and the lower cover 1 and the upper cover 2 are taken out of the box body 25, and then both hands rotate the U-shaped handle 21 respectively to make the U-shaped handle 21 vertical. During the rotation of the U-shaped handle 21, the arc groove 23 rotates accordingly, and the arc groove 23 cooperates with the slider 24, so that the slider 24 can drive the push plate 20 to slide in the direction away from the U-shaped handle 21, and the third spring 19 begins to stretch, and the movement of the push plate 20 can push the trapezoidal card The block 17 pushes the sliding groove 15 and squeezes the second spring 16, thereby releasing the clamping of the trapezoidal block 17 on the upper cover 2, and removing the upper cover 2 from the battery cell through the U-shaped handle 21 to complete the disassembly of the battery module. Conversely, the battery cells are placed in the placement grooves 3 in the lower cover 1, and the electrodes of the battery cells touch the lower contact blocks 5. The upper cover 2 is placed on the top of the battery cell, and the top of the battery cell extends to the placement groove 3 in the upper cover 2. At this time, the electrodes of the battery cell can be stuck in the upper contact block 10, and then the upper cover 2 is squeezed downward. Since the upper contact block 10 touches the electrodes of the battery cell, the first spring 9 begins to compress. As the upper cover 2 squeezes the top of the insertion rod 14 downward, it passes through the insertion hole 13. The trapezoidal block 17 is also located above the upper cover 2 and the trapezoidal block 17 is in the second spring Under the elastic force of the spring 16, it slides outward and just can clamp the upper cover 2, and then the multiple battery cells are fixed through the lower cover 1 and the upper cover 2. Since the two adjacent battery cells are placed in the groove 3, the distance between the two adjacent battery cells is between 0.3cm-0.5cm, and the distance is large, which facilitates sufficient space for air flow between the battery cells and facilitates heat dissipation. Similarly, multiple hollow tubes 38 are fixed and passed through the upper cover 2. When the battery cell heats up, the air temperature between the lower cover 1 and the upper cover 2 rises, and the hot air is discharged to the outside through the hollow tube 38, further improving the heat dissipation effect. When the battery module is placed in the box 25, the rubber pad 37 can be stuck in the corresponding limit groove 30, and the first electrode 6 is stuck in the first total electrode. 31, the battery module is initially limited. When the box body 25 is covered by the rotating plate 27, the second electrode 12 is inserted into the second main electrode 32. The battery module can be fixed by the engagement of the rubber pad 37, the first electrode 6 and the second electrode 12 through the limiting groove 30, the first main electrode 31 and the second main electrode 32, and the box body 25 can be ventilated by the exhaust fan 35. There is no fixed structure designed between the two adjacent battery modules in the box body 25, so that the air in the box body 25 can circulate smoothly, thereby improving the heat dissipation effect of the box body 25. In addition, when the two adjacent boxes 25 are docked, the vibration-damping spring 42 can play a buffering effect between the two adjacent boxes 25 to avoid collision between the two adjacent boxes 25.

[0070] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. The embodiments of the present invention and the features therein can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A power battery module, characterized in that: include: A lower cover (1), an upper cover (2) arranged above the lower cover (1), a plurality of battery cells being clamped between the lower cover (1) and the upper cover (2), and a plurality of placement grooves (3) being provided on inner walls of a side of the lower cover (1) and the upper cover (2) that are away from each other; A lower connection assembly is arranged in the lower cover (1) and is used to keep the battery cell in a path state; the lower connection assembly includes a lower connection contact network (4) fixedly connected to the lower cover (1), a plurality of lower contact blocks (5) are fixedly connected to the top of the lower connection contact network (4), and the top of the lower contact block (5) is fixedly passed through the bottom inner wall of the placement groove (3) located in the lower cover (1) to connect the lower contact block (5) with one of the electrodes of the battery cell, and the bottom of the lower connection contact network (4) is fixedly connected to a first electrode (6) extending below the lower cover (1); An upper connection component is arranged in the upper cover (2) and is used to keep the battery cell in a path state; the upper connection component includes a slide groove (7) arranged in the upper cover (2), an upper connection contact network (8) is slidably connected in the slide groove (7), a top of the upper connection contact network (8) is fixedly connected to a plurality of first springs (9), the top of the first springs (9) is fixedly connected to the top inner wall of the slide groove (7), the bottom of the upper connection contact network (8) is fixedly connected to a plurality of upper contact blocks (10) that slide through the top inner wall of the placement groove (3) in the upper cover (2), and are used to connect the upper contact block (10) with another electrode of the battery cell, a second electrode (12) is fixedly connected to the top of the upper cover (2), and the second electrode (12) is electrically connected to the upper connection contact network (8) through a plurality of connecting wires (11); A clamping assembly is arranged on the top of the lower cover (1) and is used to fix the lower cover (1) and the upper cover (2) to complete the clamping of the battery cell; the clamping assembly includes a plurality of plug rods (14) fixedly connected to both sides of the top of the lower cover (1); a plurality of sockets (13) matching the plug rods (14) are provided in the upper cover (2); a sliding groove (15) is provided on the side of the plug rod (14) close to the second electrode (12); a trapezoidal clamping block (17) for clamping the upper cover (2) is slidably connected in the sliding groove (15); a second spring (16) is fixedly connected to the inner wall of the side of the trapezoidal clamping block (17) away from the second electrode (12), and one end of the second spring (16) is fixedly connected to the inner wall of one side of the sliding groove (15).

2. A power battery module according to claim 1, characterized in that: The top of the upper cover (2) is fixedly connected to two fixed blocks (18), and the fixed blocks (18) are located on both sides of the second electrode (12), and a plurality of third springs (19) are fixedly connected to one side of the fixed block (18) away from the second electrode (12), and a plurality of third springs (19) are fixedly connected to one end away from the second electrode (12) with a same push plate (20) for pushing the trapezoidal block (17), and the push plate (20) is slidably connected to the top of the upper cover (2), and the upper cover (2) ) is connected to the top of the push plate (20) through a base rotation with two U-shaped handles (21), and two circular grooves (22) are provided on one side of the push plate (20) close to the second electrode (12). One end of the U-shaped handle (21) extends into the circular groove (22), and a slider (24) is fixedly connected to the top inner wall of the circular groove (22). The outer wall of the U-shaped handle (21) is provided with two arc grooves (23), and the arc grooves (23) are located in the circular groove (22), and the arc grooves (23) and the slider (24) are slidably matched.

3. The power battery module according to claim 1, characterized in that: A plurality of rubber pads (37) are fixedly connected to the bottom of the lower cover (1), and a plurality of hollow tubes (38) are fixedly passed through the interior of the upper cover (2).

4. A power battery box having a power battery module, used to contain the power battery module according to any one of claims 1 to 3, characterized in that: It comprises a box body (25), wherein a fixing assembly for fixing the battery module is provided in the box body (25); A ventilation component for ventilating the box (25) is provided in the box (25).

5. The power battery box with a power battery module according to claim 4, characterized in that: The fixing assembly includes a plurality of limiting grooves (30) arranged on the inner wall of the bottom of the box body (25), and the limiting grooves (30) are engaged with the rubber pads (37). The inner wall of the bottom of the box body (25) is fixedly connected with a plurality of first total electrodes (31) engaged with the first electrodes (6). Both sides of the top of the box body (25) are fixedly connected with fixing plates (26). The side of the two fixing plates (26) close to each other is rotatably connected with a rotating plate (27) that closes the box body (25). The bottom of the rotating plate (27) is fixedly connected with a plurality of second total electrodes (32) engaged with the second electrodes (12). An L-shaped stopper (28) for limiting the rotating plate (27) is slidably penetrated in the fixing plate (26). A bolt (29) is provided on the side of the L-shaped stopper (28) away from the box body (25), and one end of the bolt (29) penetrates the L-shaped stopper (28) and is threadedly connected to the box body (25).

6. The power battery box with a power battery module according to claim 4, characterized in that: The ventilation assembly comprises a plurality of exhaust ports (33) arranged on one side of the box body (25), a plurality of ventilation ports (34) being provided on the other side of the box body (25), an exhaust fan (35) for exhausting air being provided in the ventilation ports (34), and a filter screen (36) for filtering air being provided in the exhaust ports (33) and the ventilation ports (34).

7. The power battery box with a power battery module according to claim 4, characterized in that: A first T-shaped slot (39) is provided on one side of the box body (25), and the first T-shaped slot (39) is staggered with the exhaust port (33); a second T-shaped slot (40) is provided on the other side of the box body (25), and the second T-shaped slot (40) is staggered with the vent (34); a first T-shaped block (41) is slidably connected in the first T-shaped slot (39); an end of the first T-shaped block (41) away from the box body (25) is fixedly connected to a damping spring (42); an end of the damping spring (42) away from the first T-shaped block (41) is fixedly connected to a second T-shaped block (43), and the second T-shaped block (43) is matched with the second T-shaped slot (40) in the adjacent box body (25).

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