Power battery module and power battery box with same

Abstract

The invention belongs to the technical field of power batteries, particularly relates to a power battery module and a power battery box with the power battery module, and provides the following scheme aiming at the problems that in the prior art, mounting and dismounting are tedious, later maintenance is inconvenient, heat emitted by a battery cell cannot be discharged in time, and the heat dissipation effect is poor due to too many battery box fixing structures. The battery pack comprises 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 formed in the inner walls of the sides, away from each other, of the lower cover and the upper cover, the distance between every two adjacent placement grooves is 0.3-0.5 CM, and a lower connecting assembly arranged in the lower cover and used for keeping the battery cells in a closed state. The clamping and fixing of the lower cover and the upper cover on the battery cell can be easily and quickly completed by pressing the upper cover, in addition, the clamping of the trapezoidal clamping block on the upper cover can be relieved by rotating the U-shaped handle and lifting the U-shaped handle upwards, the lower cover and the upper cover are disassembled, and the later maintenance and replacement of the battery cell can be facilitated.

Description

Technical Field

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

[0002] As the main energy storage device for loading battery packs on new energy electric vehicles, the battery pack is a key component of electric vehicles, and its technical level is the core determining the performance of a new energy vehicle. With the gradual deepening of the market promotion of electric vehicles, the requirements for battery systems are also getting higher and higher.

[0003] However, the battery module in the prior art still has the following deficiencies:

[0004] 1. In the prior art, the battery module basically uses multiple bolts or multiple buckles to clamp and fix multiple battery cells with an upper cover and a lower cover. Due to the large number of battery cells, it is impossible to accurately dock the battery cells with the electrical contact pieces during the clamping process. Therefore, the installation is relatively cumbersome, and it is not convenient for disassembly and later maintenance during later faults or recycling.

[0005] 2. Multiple battery cells are clamped and fixed by an upper cover and a lower cover. However, the number of battery cells is large and the arrangement is dense. Therefore, the heat dissipated by the battery cells during later use cannot be discharged in time, resulting in too high a temperature of the battery cells, affecting the life of the battery cells, and easily causing explosion in severe cases.

[0006] 3. When placing the battery module in the battery box, a fixing structure is often set in the battery box to facilitate the fixing of the battery module in the battery box. 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 view of 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 solve the disadvantages in the prior art that the installation and disassembly are cumbersome and inconvenient for later repair, the heat dissipated by the battery cells cannot be discharged in time, and the heat dissipation effect is poor due to too many fixing structures in the battery box.

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

[0010] A power battery module, comprising: a lower cover, an upper cover disposed above the lower cover, a plurality of battery cells are clamped between the lower cover and the upper cover, and a plurality of placement grooves are provided on the inner walls of the mutually remote sides of the lower cover and the upper cover, and the distance between adjacent two placement grooves is 0.3 CM - 0.5 CM;

[0011] A lower connection component, disposed in the lower cover, for keeping the battery cells in a conductive state;

[0012] An upper connection component, which is arranged inside the upper cover and is used to keep the battery cell in a conductive state;

[0013] A clamping component, which is arranged at 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 a possible design, the lower connection component includes a lower connection contact net fixedly connected inside the lower cover. A plurality of lower contact blocks are fixedly connected to the top of the lower connection contact net, and the top of the lower contact block fixedly penetrates through the bottom inner wall of the placement groove inside the lower cover, so as to dock the lower contact block with one of the electrodes of the battery cell. The bottom of the lower connection contact net is fixedly connected with a first electrode extending below the lower cover.

[0015] In a possible design, the upper connection component includes a sliding groove arranged inside the upper cover. An upper connection contact net is slidably connected inside the sliding groove. A plurality of first springs are fixedly connected to the top of the upper connection contact net, and the outer wall of the first spring is wrapped with an insulating rubber layer. The top end of the first spring is fixedly connected to the top inner wall of the sliding groove. A plurality of upper contact blocks are fixedly connected to the bottom of the upper connection contact net and slide through the top inner wall of the placement groove inside the upper cover, so as to dock the upper contact block with the other electrode of the battery cell. A second electrode is fixedly connected to the top of the upper cover. The second electrode is electrically connected to the upper connection contact net through a plurality of connecting wires.

[0016] In a possible design, the clamping component includes a plurality of insertion rods fixedly connected to both sides of the top of the lower cover. A plurality of insertion holes matching with the insertion rods are arranged inside the upper cover. A sliding groove is arranged on one side of the insertion rod close to the second electrode. A trapezoidal clamping block for clamping the upper cover is slidably connected inside the sliding groove. A second spring is fixedly connected to the inner wall on the side of the trapezoidal clamping block away from the second electrode, and one end of the second spring is fixedly connected to one side inner wall of the sliding groove.

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

[0018] In a possible design, a plurality of rubber cushion blocks are fixedly connected to the bottom of the lower cover, and a plurality of hollow tubes are fixedly penetrated in the upper cover. When the battery module is placed in the box body, the rubber cushion blocks can be clamped into the corresponding limiting grooves. When the battery cells generate heat, the air temperature between the lower cover and the upper cover rises, and the hot air passes upward through the hollow tubes and is discharged to the outside, further improving the heat dissipation effect.

[0019] A power battery box having a power battery module for containing the power battery module as described above, including a box body, and a fixing component for fixing the battery module is provided in the box body;

[0020] A ventilation component for ventilating the inside of the box body is provided in the box body.

[0021] In a possible design, the fixing component includes a plurality of limiting grooves provided on the inner wall of the bottom of the box body, and the limiting grooves are engaged with the rubber cushion blocks. A plurality of first main electrodes engaged with the first electrodes are fixedly connected to the inner wall of the bottom of the box body. Fixing plates are fixedly connected to both sides of the top of the box body. A rotating plate for closing the box body is rotatably connected to one side of the two fixing plates close to each other. A plurality of second main electrodes engaged with the second electrodes are fixedly connected to the bottom of the rotating plate. An L-shaped stopper for limiting the rotating plate is slidably penetrated in the fixing plate. A bolt is provided on the side of the L-shaped stopper away from the box body, and one end of the bolt penetrates through the L-shaped stopper and is threadedly connected to the box body.

[0022] In a possible design, the ventilation component includes a plurality of exhaust ports provided on one side of the box body, a plurality of ventilation ports are provided on the other side of the box body, an exhaust fan for exhausting air is provided in the ventilation ports, and filters for filtering air are provided in the exhaust ports and the ventilation ports. The box body can be ventilated through the exhaust fan, and there is no fixed structure between two adjacent battery modules in the box body, so that the air in the box body can circulate smoothly, improving the heat dissipation effect of the box body.

[0023] In a possible design, a first T-shaped groove is provided on one side of the box body, and the first T-shaped groove intersects with the exhaust port. A second T-shaped groove is provided on the other side of the box body, and the second T-shaped groove intersects with the ventilation port. A first T-shaped block is slidably connected in the first T-shaped groove. One end of the first T-shaped block away from the box body is fixedly connected to a damping spring. One end of the damping spring away from the first T-shaped block is fixedly connected to a second T-shaped block, and the second T-shaped block is matched with the second T-shaped groove in the adjacent box body. When docking two adjacent box bodies, the second T-shaped block is clamped into the second T-shaped groove in the adjacent box body, and the damping spring can play a buffering effect between the two adjacent box bodies, avoiding collision between the two adjacent box bodies.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present invention.

[0025] In the present invention, a sliding groove is provided on one side of the insertion rod close to the second electrode. A trapezoidal clamping block for clamping the upper cover is slidably connected in the sliding groove. One inner wall of the trapezoidal clamping block far from the second electrode is fixedly connected with a second spring, and one end of the second spring is fixedly connected with one inner wall of the sliding groove. Cover the upper cover on the top of the battery cell, and then press the upper cover downward. Since the upper contact block touches the electrode of the battery cell, the first spring starts to compress. As the upper cover presses the top of the insertion rod downward, the top of the insertion rod penetrates 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 outwards and can just clamp the upper cover. By pressing the upper cover, it is easy to complete the fixation of the lower cover and the upper cover on multiple battery cells. The installation is simple and fast;

[0026] In the present invention, a plurality of third springs are fixedly connected to one side of the fixed block far from the second electrode. One end of each of the plurality of third springs is fixedly connected with a push plate. A slider is fixedly connected to the top inner wall of the circular groove. An arc-shaped groove is provided on the outer wall of the U-shaped handle, and the arc-shaped groove is slidably matched with the slider. Rotate the U-shaped handle with both hands to make the U-shaped handle in a vertical state. The arc-shaped groove rotates accordingly. The arc-shaped groove cooperates with the slider. Furthermore, the slider can drive the push plate to slide in a direction away from the U-shaped handle. The movement of the push plate can push the trapezoidal clamping block into the sliding groove and compress the second spring, thereby releasing the clamping of the trapezoidal clamping block on the upper cover. By rotating the U-shaped handle and pulling it upwards, the lower cover and the upper cover can be disassembled, which is convenient for the later maintenance and replacement of the battery cells;

[0027] In the present invention, a plurality of placement grooves are provided on the inner walls of the mutually remote sides of the lower cover and the upper cover. The distance between adjacent two placement grooves is 0.3 cm - 0.5 cm. The distance between the battery cells is relatively large, which is convenient for sufficient air flow space between the battery cells for heat dissipation. A plurality of hollow tubes are fixedly penetrated in the upper cover. When the battery cells generate heat, the air temperature between the lower cover and the upper cover rises. The hot air passes upwards through the hollow tubes and is discharged to the outside, 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 total electrodes are fixedly connected to the bottom inner wall of the box body. A plurality of second total 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 clamped into the second total electrode. The clamping of the rubber cushion block, the first electrode and the second electrode by the limiting groove, the first total electrode and the second total electrode can fix the battery module. There is no fixed structure between adjacent two battery modules in the box body. Subsequently, the air flow in the box body can be unobstructed, improving the heat dissipation effect of the box body.

[0029] In the present invention, by pressing the upper cover, the clamping and fixing of the battery cell by the lower cover and the upper cover can be easily and quickly completed. In addition, by rotating the U-shaped handle and pulling it upward, the clamping of the trapezoidal block on the upper cover can be released, and the lower cover and the upper cover can be disassembled, which is convenient for the later maintenance and replacement of the battery cell. In addition, by setting the spacing between adjacent placement grooves and setting the hollow tubes, 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 body, avoiding the fixing mechanisms from hindering ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 FIG. 6 is a three-dimensional structural schematic diagram of a power battery module provided by an embodiment of the present invention;

[0031] Figure 2 FIG. 10 is a three-dimensional exploded structural schematic diagram of a power battery module provided by an embodiment of the present invention;

[0032] Figure 3 FIG. 14 is a three-dimensional sectional structural schematic diagram of a lower cover of a power battery module provided by an embodiment of the present invention;

[0033] Figure 4 FIG. 18 is a three-dimensional structural schematic diagram of a lower connection contact network and a lower contact block of a power battery module provided by an embodiment of the present invention;

[0034] Figure 5 FIG. 22 is a three-dimensional sectional structural schematic diagram of an upper cover of a power battery module provided by an embodiment of the present invention;

[0035] Figure 6 FIG. 26 is a three-dimensional structural schematic diagram of an upper connection contact network and an upper contact block of a power battery module provided by an embodiment of the present invention;

[0036] Figure 7 FIG. 30 is a three-dimensional structural schematic diagram of an upper cover of a power battery module provided by an embodiment of the present invention;

[0037] Figure 8 FIG. 34 is a three-dimensional sectional structural schematic diagram of a push plate of a power battery module provided by an embodiment of the present invention;

[0038] Figure 9 FIG. 38 is a partial three-dimensional sectional structural schematic diagram of a power battery module provided by an embodiment of the present invention;

[0039] Figure 10 FIG. 42 is an enlarged structural schematic diagram at A of a power battery module provided by an embodiment of the present invention;

[0040] Figure 11 FIG. 46 is a three-dimensional exploded structural schematic diagram of a power battery box having a power battery module provided by an embodiment of the present invention;

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

[0042] Figure 13 A front sectional structure schematic diagram of a power battery box with a power battery module provided by an embodiment of the present invention in Embodiment 2.

[0043] Reference numerals:

[0044] 1. Lower cover; 2. Upper cover; 3. Placing groove; 4. Lower connecting contact network; 5. Lower contact block; 6. First electrode; 7. Slide groove; 8. Upper connecting contact network; 9. First spring; 10. Upper contact block; 11. Connecting wire; 12. Second electrode; 13. Jack; 14. Plug rod; 15. Sliding groove; 16. Second spring; 17. Trapezoidal clamping block; 18. Fixed block; 19. Third spring; 20. Push plate; 21. U-shaped handle; 22. Circular groove; 23. Arc-shaped groove; 24. Slide block; 25. Box body; 26. Fixed plate; 27. Rotating plate; 28. L-shaped stop block; 29. Bolt; 30. Limiting groove; 31. First main electrode; 32. Second main electrode; 33. Air exhaust port; 34. Ventilation port; 35. Exhaust fan; 36. Filter screen; 37. Rubber cushion block; 38. Hollow pipe; 39. First T-shaped groove; 40. Second T-shaped groove; 41. First T-shaped block; 42. Vibration damping spring; 43. Second T-shaped block. Detailed implementation manners

[0045] The following describes the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention.

[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 communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative position relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only for reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description 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 to 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 construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0048] In the embodiments of the present invention, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0049] Reference to "one embodiment" or "some embodiments" etc. described in this specification means that in one or more embodiments of the present invention, specific features, structures or characteristics described in connection with that embodiment are included. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprise", "include", "have" and their variants all mean "include but not limited to", unless otherwise specifically emphasized in other ways.

[0050] Embodiment 1

[0051] Referring to 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 disposed above the lower cover 1, a plurality of battery cells are snap-connected between the lower cover 1 and the upper cover 2, a plurality of placement grooves 3 are provided on the inner walls of the mutually remote sides of the lower cover 1 and the upper cover 2, the distance between adjacent two placement grooves 3 is 0.3 CM - 0.5 CM, a lower connection assembly, disposed in the lower cover 1, for keeping the battery cells in a conductive state, an upper connection assembly, disposed in the upper cover 2, for keeping the battery cells in a conductive state, a snap connection assembly, disposed on the top of the lower cover 1, for fixing the lower cover 1 and the upper cover 2 to complete the clamping of the battery cells, a plurality of rubber pads 37 are fixedly connected to the bottom of the lower cover 1, a plurality of hollow tubes 38 are fixedly penetrated in the upper cover 2, when the battery module is placed in the box body 25, the rubber pads 37 can be snapped into the corresponding limiting grooves 30, when the battery cells generate heat, the air temperature between the lower cover 1 and the upper cover 2 rises, and the hot air passes upward through the hollow tubes 38 and is discharged to the outside, further improving the heat dissipation effect, the distance between adjacent two placement grooves 3 is 0.3 CM - 0.5 CM, the distance between the battery cells is relatively large, facilitating sufficient space for air flow between the battery cells and being conducive to heat dissipation.​

[0052] Referring to Figure 3 and Figure 4 , the lower connection component includes a lower connection contact network 4 fixedly connected inside 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 tops of the lower contact blocks 5 fixedly penetrate through the bottom inner wall of the placement groove 3 located inside the lower cover 1 for docking one of the electrodes of the lower contact block 5 with the battery cell. The bottom of the lower connection contact network 4 is fixedly connected with a first electrode 6 extending below the lower cover 1.

[0053] Referring to Figure 5 and Figure 6 , the upper connection component includes a sliding groove 7 provided inside the upper cover 2. A sliding connection upper connection contact network 8 is provided inside the sliding groove 7. A plurality of first springs 9 are fixedly connected to the top of the upper connection contact network 8, and the outer walls of the first springs 9 are wrapped with an insulating rubber layer. The top ends of the first springs 9 are fixedly connected to the top inner wall of the sliding groove 7. A plurality of upper contact blocks 10 that slidably penetrate through the top inner wall of the placement groove 3 located inside the upper cover 2 are fixedly connected to the bottom of the upper connection contact network 8 for docking the upper contact block 10 with the other 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 and the upper connection contact network 8 are electrically connected through a plurality of connecting wires 11.

[0054] Referring to Figure 9 and Figure 10 , the clamping component includes a plurality of insertion rods 14 fixedly connected to both sides of the top of the lower cover 1. A plurality of insertion holes 13 that cooperate with the insertion rods 14 are provided inside the upper cover 2. A sliding groove 15 is provided on one side of the insertion rod 14 close to the second electrode 12. A trapezoidal clamping block 17 for clamping the upper cover 2 is slidably connected inside 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. Cover the upper cover 2 on the top of the battery cell, and then press the upper cover 2 downward. Since the upper contact block 10 touches the electrode of the battery cell, the first spring 9 starts to compress. As the upper cover 2 is pressed downward, the top end of the insertion rod 14 penetrates through the insertion hole 13, and the trapezoidal clamping block 17 is also located above the upper cover 2. The trapezoidal clamping block 17 slides outwards under the elastic force of the second spring 16 and can just clamp the upper cover 2. By pressing the upper cover 2, it is possible to easily complete the fixation of the lower cover 1 and the upper cover 2 to a plurality of battery cells, and the installation is simple and fast.

[0055] Referring to Figure 5 and Figure 8, two fixing blocks 18 are fixedly connected to the top of the upper cover 2, and the fixing blocks 18 are located on both sides of the second electrode 12. A plurality of third springs 19 are fixedly connected to the side of the fixing block 18 away from the second electrode 12. One same push plate 20 for pushing the trapezoidal clamping block 17 is fixedly connected to the ends of the plurality of third springs 19 away from the second electrode 12. The push plate 20 is slidably connected to the top of the upper cover 2. Two U-shaped handles 21 are rotatably connected to the top of the upper cover 2 through a base. Two circular grooves 22 are provided on the 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. A slider 24 is fixedly connected to the inner wall of the top of the circular groove 22. Two arc-shaped grooves 23 are provided on the outer wall of the U-shaped handle 21, and the arc-shaped grooves 23 are located in the circular groove 22. The arc-shaped grooves 23 are slidably matched with the slider 24. Rotate the U-shaped handles 21 with both hands to make the U-shaped handles 21 in a vertical state. The arc-shaped grooves 23 rotate accordingly. The arc-shaped grooves 23 cooperate with the slider 24. Furthermore, the slider 24 can drive the push plate 20 to slide in a direction away from the U-shaped handle 21. The movement of the push plate 20 can push the trapezoidal clamping block 17 into the sliding groove 15 and squeeze the second spring 16, thereby releasing the clamping of the trapezoidal clamping block 17 on 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 is convenient for the later maintenance and replacement of the battery cell.

[0056] Referring to Figure 11 and Figure 12 , a power battery box with a power battery module, used for containing the power battery module as described above, includes a box body 25. A fixing component for fixing the battery module is provided in the box body 25. A ventilation component for ventilating the inside of the box body 25 is provided in the box body 25.

[0057] Referring to Figure 11, The fixing component includes a plurality of limiting grooves 30 provided on the inner wall of the bottom of the box body 25, and the limiting grooves 30 are engaged with the rubber cushion blocks 37. A plurality of first main electrodes 31 engaged with the first electrode 6 are fixedly connected to the inner wall of the bottom of the box body 25. Fixing plates 26 are fixedly connected to both sides of the top of the box body 25. A rotating plate 27 for closing the box body 25 is rotatably connected to the side of the two fixing plates 26 close to each other. A plurality of second main electrodes 32 engaged with the second electrode 12 are fixedly connected to the bottom of the rotating plate 27. An L-shaped stopper 28 for limiting the rotating plate 27 slidably penetrates through 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 through the L-shaped stopper 28 and is threadedly connected to the box body 25. After the box body 25 is covered by the rotating plate 27, the second electrode 12 is snapped into the second main electrode 32. The engagement of the limiting groove 30, the first main electrode 31, and the second main electrode 32 with the rubber cushion block 37, the first electrode 6, and the second electrode 12 can fix the battery module. However, no fixing structure is designed between two adjacent battery modules in the box body 25, so that the air flow in the box body 25 can be smooth, and the heat dissipation effect of the box body 25 can be improved.

[0058] Refer to Figure 12 , The ventilation component includes a plurality of exhaust ports 33 provided on one side of the box body 25. 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. A filter screen 36 for filtering air is provided in the exhaust port 33 and the ventilation port 34. The exhaust fan 35 can ventilate the box body 25. However, no fixing structure is designed between two adjacent battery modules in the box body 25, so that the air flow in the box body 25 can be smooth, and the heat dissipation effect of the box body 25 can be improved.

[0059] Embodiment 2

[0060] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 5, a power battery module of this embodiment and a power battery box with the power battery module, comprising: a lower cover 1, an upper cover 2 arranged above the lower cover 1, a plurality of battery cells are snap-connected between the lower cover 1 and the upper cover 2, and a plurality of placement grooves 3 are provided on the inner walls of the mutually remote sides of the lower cover 1 and the upper cover 2. The distance between two adjacent placement grooves 3 is 0.3 CM - 0.5 CM. A lower connection component is arranged inside the lower cover 1 and is used to keep the battery cells in a conductive state. An upper connection component is arranged inside the upper cover 2 and is used to keep the battery cells in a conductive state. A snap connection component 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 cells. 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 penetrated inside the upper cover 2. When the battery module is placed in the box body 25, the rubber pads 37 can be snapped into the corresponding limit grooves 30. When the battery cells generate heat, the air temperature between the lower cover 1 and the upper cover 2 rises, and the hot air passes upward through the hollow tubes 38 and is discharged to the outside, further improving the heat dissipation effect. The distance between two adjacent placement grooves 3 is 0.3 CM - 0.5 CM, and the distance between the battery cells is relatively large, which is convenient for sufficient air flow between the battery cells and facilitates heat dissipation.

[0061] Refer to Figure 3 and Figure 4 , the lower connection component includes a lower connection contact network 4 fixedly connected inside 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 tops of the lower contact blocks 5 fixedly penetrate the bottom inner wall of the placement groove 3 located inside the lower cover 1 and are used to dock one electrode of the lower contact block 5 with the battery cell. A first electrode 6 extending below the lower cover 1 is fixedly connected to the bottom of the lower connection contact network 4.

[0062] Refer to Figure 5 and Figure 6 , the upper connection component includes a sliding groove 7 arranged inside the upper cover 2. An upper connection contact network 8 is slidably connected inside the sliding groove 7. A plurality of first springs 9 are fixedly connected to the top of the upper connection contact network 8, and an insulating rubber layer is wrapped around the outer wall of the first springs 9. The tops of the first springs 9 are fixedly connected to the top inner wall of the sliding groove 7. A plurality of upper contact blocks 10 that slidably penetrate the top inner wall of the placement groove 3 located inside the upper cover 2 are fixedly connected to the bottom of the upper connection contact network 8 and are used to dock the other electrode of the upper contact block 10 with 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 connection wires 11.

[0063] Refer to Figure 9 and Figure 10, the snap - fit component includes a plurality of insertion rods 14 fixedly connected to both sides of the top of the lower cover 1. A plurality of insertion holes 13 that cooperate with the insertion rods 14 are provided in the upper cover 2. A sliding groove 15 is provided on the side of the insertion rod 14 close to the second electrode 12. A trapezoidal 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 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. Cover the upper cover 2 on the top of the battery cell. Then, press the upper cover 2 downward. Since the upper contact block 10 touches the electrode of the battery cell, the first spring 9 starts to compress. As the upper cover 2 is pressed downward, the top of the insertion rod 14 penetrates through the insertion hole 13. The trapezoidal block 17 is also located above the upper cover 2. Under the elastic force of the second spring 16, the trapezoidal block 17 slides outwards and can just clamp the upper cover 2. By pressing the upper cover 2, it is possible to easily complete the fixation of the lower cover 1 and the upper cover 2 to a plurality of battery cells. The installation is simple and fast.

[0064] Refer to Figure 5 and Figure 8 , two fixing blocks 18 are fixedly connected to the top of the upper cover 2 and the fixing blocks 18 are located on both sides of the second electrode 12. A plurality of third springs 19 are fixedly connected to the side of the fixing block 18 away from the second electrode 12. One end of the plurality of third springs 19 away from the second electrode 12 is fixedly connected to the same push plate 20 for pushing the trapezoidal block 17. The push plate 20 is slidably connected to the top of the upper cover 2. Two U - shaped handles 21 are rotatably connected to the top of the upper cover 2 through a base. Two circular grooves 22 are provided on the 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. A slider 24 is fixedly connected to the inner wall of the top of the circular groove 22. Two arc - shaped grooves 23 are provided on the outer wall of the U - shaped handle 21, and the arc - shaped grooves 23 are located in the circular groove 22. The arc - shaped grooves 23 are slidably matched with the slider 24. Rotate the U - shaped handles 21 with both hands to make the U - shaped handles 21 in a vertical state. The arc - shaped grooves 23 rotate accordingly. The arc - shaped grooves 23 cooperate with the slider 24. Furthermore, the slider 24 can drive the push plate 20 to slide in a direction away from the U - shaped handle 21. The movement of the push plate 20 can push the trapezoidal block 17 into the sliding groove 15 and compress the second spring 16, thereby releasing the clamping of the trapezoidal block 17 on the upper cover 2. By rotating the U - shaped handle 21 and pulling upward, the lower cover 1 and the upper cover 2 can be disassembled, which is convenient for the later maintenance and replacement of the battery cells.

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

[0066] Refer to Figure 11, The fixing components include a plurality of limiting grooves 30 provided on the inner bottom wall of the box body 25, and the limiting grooves 30 are engaged with the rubber cushion blocks 37. A plurality of first main electrodes 31 engaged with the first electrode 6 are fixedly connected to the inner bottom wall of the box body 25. Fixed plates 26 are fixedly connected to both sides of the top of the box body 25. A rotating plate 27 for closing the box body 25 is rotatably connected to the side of the two fixed plates 26 close to each other. A plurality of second main electrodes 32 engaged with the second electrode 12 are fixedly connected to the bottom of the rotating plate 27. An L-shaped stopper 28 for limiting the rotating plate 27 is slidably penetrated through the fixed 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 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 snapped into the second main electrode 32. The engagement of the limiting groove 30, the first main electrode 31, and the second main electrode 32 with the rubber cushion block 37, the first electrode 6, and the second electrode 12 can fix the battery module. However, no fixing structure is designed between two adjacent battery modules in the box body 25, so that the air flow in the box body 25 can be unobstructed, and the heat dissipation effect of the box body 25 can be improved.

[0067] Refer to Figure 12 , The ventilation components include a plurality of exhaust ports 33 provided on one side of the box body 25. 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. Filter meshes 36 for filtering air are provided in the exhaust ports 33 and the ventilation ports 34. The box body 25 can be ventilated through the exhaust fan 35. However, no fixing structure is designed between two adjacent battery modules in the box body 25, so that the air flow in the box body 25 can be unobstructed, and the heat dissipation effect of the box body 25 can be improved.

[0068] Refer to Figure 13 , A first T-shaped groove 39 is provided on one side of the box body 25, and the first T-shaped groove 39 is staggered with the exhaust port 33. A second T-shaped groove 40 is provided on the other side of the box body 25, and the second T-shaped groove 40 is staggered with the ventilation port 34. A first T-shaped block 41 is slidably connected in the first T-shaped groove 39. One end of the first T-shaped block 41 away from the box body 25 is fixedly connected to a damping spring 42. One 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 groove 40 in the adjacent box body 25. When docking two adjacent box bodies 25, the second T-shaped block 43 is snapped into the second T-shaped groove 40 in the adjacent box body 25. The damping spring 42 can play a buffering effect between two adjacent box bodies 25 to prevent the two adjacent box bodies 25 from colliding with each other.

[0069] Working principle: Loosen the bolt 29 to release the fixation between the L-shaped block 28 and the box body 25, take out the L-shaped block 28 to release the braking of the rotating plate 27 by the L-shaped block 28, rotate the rotating plate 27 to open the box body 25. During the rotation of the rotating plate 27, the second main electrode 32 is disengaged from the second electrode 12, take out the lower cover 1 and the upper cover 2 from the box body 25. Then, rotate the U-shaped handle 21 with both hands to make the U-shaped handle 21 in a vertical state. During the rotation of the U-shaped handle 21, the arc-shaped groove 23 rotates accordingly. The arc-shaped groove 23 cooperates with the slider 24, and then the slider 24 can drive the push plate 20 to slide away from the U-shaped handle 21, and the third spring 19 starts to stretch. 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 clamping of the trapezoidal block 17 on the upper cover 2. Take out the upper cover 2 from the battery cell through the U-shaped handle 21, and the disassembly of the battery module can be completed. On the contrary, place the battery cells in the placement grooves 3 in the lower cover 1 respectively. The electrodes of the battery cells touch the lower contact blocks 5, cover the upper cover 2 on the top of the battery cells, and the top of the battery cells extends into the placement grooves 3 in the upper cover 2. At this time, the electrodes of the battery cells can be clamped into the upper contact blocks 10. Then, press the upper cover 2 downward. Since the upper contact blocks 10 touch the electrodes of the battery cells, the first spring 9 starts to compress. As the upper cover 2 is pressed downward, the top end of the insertion rod 14 penetrates through the insertion hole 13. The trapezoidal block 17 is also located above the upper cover 2, and the trapezoidal block 17 slides outwards under the elastic force of the second spring 16 and can just clamp the upper cover 2. Thus, the multiple battery cells are fixed by the lower cover 1 and the upper cover 2. Due to the action of the placement grooves 3 between adjacent two battery cells, the distance between adjacent two battery cells is between 0.3 cm and 0.5 cm. Thus, the distance is relatively large, which is convenient for sufficient air flow between the battery cells for heat dissipation. Similarly, a plurality of hollow tubes 38 are fixedly penetrated in the upper cover 2. When the battery cells generate heat, the air temperature between the lower cover 1 and the upper cover 2 rises, and the hot air passes upward through the hollow tubes 38 and is discharged to the outside, further improving the heat dissipation effect. When the battery module is placed in the box body 25, the rubber cushion block 37 can be clamped into the corresponding limiting groove 30, and the first electrode 6 is clamped into the first main electrode 31 to initially limit the battery module. When the box body 25 is covered by the rotating plate 27, the second electrode 12 is clamped into the second main electrode 32. The clamping of the rubber cushion block 37, the first electrode 6 and the second electrode 12 by the limiting groove 30, the first main electrode 31 and the second main electrode 32 can fix the battery module, and the exhaust fan 35 can ventilate the box body 25. There is no fixed structure designed between adjacent two battery modules in the box body 25, and then the air flow in the box body 25 can be unobstructed, improving the heat dissipation effect of the box body 25. In addition, when docking adjacent two box bodies 25, the damping spring 42 can play a buffering effect between adjacent two box bodies 25 to avoid collision between adjacent two box bodies 25.

[0070] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention; without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present invention shall be subject to the protection scope 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 conductive state; An upper connection assembly is arranged inside the upper cover (2) and is used to keep the battery cell in a conductive state; The 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 core.

2. A power battery module according to claim 1, characterized in that: The lower connection assembly comprises a lower connection contact network (4) fixedly connected in 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) in the lower cover (1) so as to enable the lower contact block (5) to dock with one of the electrodes of the battery cell; and a first electrode (6) extending to the bottom of the lower cover (1) is fixedly connected to the bottom of the lower connection contact network (4).

3. A power battery module according to claim 1, characterized in that: The upper connection assembly comprises 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 plurality of first springs (9) are fixedly connected to the top of the upper connection contact network (8), the top of the first spring (9) is fixedly connected to the top inner wall of the slide groove (7), a plurality of upper contact blocks (10) are fixedly connected to the bottom of the upper connection contact network (8) and 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).

4. A power battery module according to claim 1, characterized in that: The clamping assembly comprises a plurality of plug rods (14) fixedly connected to both sides of the top of the lower cover (1); a plurality of plug holes (13) matching the plug rods (14) are provided in the upper cover (2); a sliding groove (15) is provided on a 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 an inner wall of a 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 an inner wall of one side of the sliding groove (15).

5. The 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). A plurality of third springs (19) are fixedly connected to one side of the fixed block (18) away from the second electrode (12). One end of the plurality of third springs (19) away from the second electrode (12) is fixedly connected to a 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). ) is rotatably connected to the top of the push plate (20) via a base with two U-shaped handles (21); one 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); a slider (24) is fixedly connected to the top inner wall of the circular groove (22); two arc grooves (23) are provided on the outer wall of the U-shaped handle (21); the arc grooves (23) are located in the circular groove (22), and the arc grooves (23) and the slider (24) are slidably matched.

6. A 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 penetrated inside the upper cover (2).

7. A power battery box with a power battery module, used to contain the power battery module as claimed in any one of claims 1 to 6, characterized in that: It comprises a box body (25), wherein a fixing assembly for fixing the battery module is arranged inside the box body (25); A ventilation component for ventilating the inside of the box (25) is provided in the box (25).

8. A power battery box with a power battery module according to claim 7, characterized in that: The fixing assembly comprises 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 electrode (6); both sides of the top of the box body (25) are fixedly connected with fixing plates (26); the sides of the two fixing plates (26) close to each other are rotatably connected with a rotating plate (27) for closing 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) 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).

9. The power battery box with a power battery module according to claim 7, characterized in that: The ventilation assembly comprises a plurality of exhaust ports (33) arranged on one side of a box body (25), a plurality of ventilation ports (34) being arranged on the other side of the box body (25), an exhaust fan (35) for exhausting air being arranged in the ventilation ports (34), and a filter screen (36) for filtering air being arranged in the exhaust ports (33) and the ventilation ports (34).

10. A power battery box with a power battery module according to claim 7, 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 ventilation port (34); a first T-shaped block (41) is slidably connected in the first T-shaped slot (39); a damping spring (42) is fixedly connected to one end of the first T-shaped block (41) away from the box body (25); a second T-shaped block (43) is fixedly connected to one end of the damping spring (42) away from the first T-shaped block (41), 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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