New energy heavy truck power battery fixing device

Abstract

The invention provides a new energy heavy truck power battery fixing device, and belongs to the technical field of new energy heavy trucks, the new energy heavy truck power battery fixing device comprises a mounting underframe and a power battery, a placing plate is arranged above the mounting underframe, and the placing plate is connected with the mounting underframe through a buffer assembly; two clamping plates which are distributed left and right are arranged on the top surface of the placing plate, the two clamping plates are connected with the placing plate through a first transmission assembly, the opposite surfaces of the two clamping plates are fixedly connected with clamping blocks with hollow interiors, each clamping block is slidably connected with two insertion blocks which are distributed front and back, and each clamping plate is provided with a second transmission assembly. According to the power battery fixing device, the two clamping plates and the corresponding clamping blocks can be driven to move through the driving of the first transmission assembly, so that the clamping blocks are clamped into the corresponding clamping grooves, and the inserting blocks are inserted into the inserting grooves under the driving of the second transmission assembly, so that the left side and the right side of the power battery are limited and fixed, and the stability of the power battery is ensured.

Description

Technical Field

[0001] This invention belongs to the field of new energy heavy truck technology, specifically a power battery fixing device for new energy heavy trucks. Background Technology

[0002] With the increasing awareness of environmental protection, new energy heavy trucks are becoming more and more popular as a new energy green transportation tool. Since new energy heavy trucks use on-board batteries to power electric motors to output power, they have significant effects in energy saving and environmental protection.

[0003] Currently, most new energy heavy-duty truck power batteries on the market are mounted on the rear of the truck front using a mounting frame to provide power. However, during use, the mounting frame only serves to support the power battery and cannot securely lock the battery pack horizontally. This results in the battery pack not being able to connect securely to the vehicle's electrical connectors, especially under bumpy conditions, where the battery pack is prone to detaching from the vehicle, affecting normal vehicle operation. Furthermore, the batteries used in new energy heavy-duty trucks are large and heavy, lacking protective and securing components. During bumps or braking, the battery pack is prone to tipping over, exhibiting poor stability and safety, and lacking shock absorption. In bumpy situations, the power battery is easily damaged by impacts, affecting its lifespan.

[0004] Therefore, this invention proposes a battery mounting device for new energy heavy-duty trucks to compensate for and improve the deficiencies of existing technologies. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a battery fixing device for new energy heavy-duty trucks.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A power battery fixing device for a new energy heavy-duty truck includes a mounting base and a power battery. A placement plate is provided on the top of the mounting base. The placement plate is connected to the mounting base through a buffer assembly. Two clamping plates are provided on the top surface of the placement plate, which are distributed left and right. The two clamping plates are connected to the placement plate through a first transmission assembly. Hollow locking blocks are fixedly connected to the opposite surfaces of the two clamping plates. Two insert blocks are slidably connected to each locking block. A second transmission assembly is provided on each clamping plate, which is connected to the corresponding two insert blocks. The top surface of the placement plate is provided with two U-shaped plates distributed front and back. Each U-shaped plate is provided with two mounting plates distributed left and right. Each mounting plate is fixedly connected to one side with two vertically distributed insert rods. Each insert rod passes through the corresponding U-shaped plate and can slide horizontally along the corresponding U-shaped plate. Each U-shaped plate is provided with a third transmission assembly, which is connected to the corresponding two mounting plates. The power battery has slots on both the left and right sides, and slots on the inner walls of the front and rear sides of each slot. The card block can be inserted into the corresponding slot, and the plug can be inserted into the corresponding slot. Two strip blocks are fixedly connected to the front and rear sides of the power battery. Each strip block has two vertically distributed insertion holes, and each plug can be inserted into the corresponding insertion hole.

[0007] Preferably, the buffer assembly includes: four vertical rods, which are fixedly connected to the four corners of the top surface of the mounting base. Each of the four vertical rods passes through the placement plate and can slide up and down along the placement plate. Each vertical rod is fitted with a shock-absorbing spring on its outer periphery. The top end of each shock-absorbing spring is fixedly connected to the bottom surface of the placement plate, and the bottom end of each shock-absorbing spring is fixedly connected to the top surface of the mounting base. Each vertical rod is fixedly connected to a limiting block at its top end.

[0008] Preferably, the first transmission assembly includes: two strip-shaped grooves formed on the top surface of the placement plate, the two strip-shaped grooves being distributed front and rear, a first motor being fixedly connected in each strip-shaped groove, a first lead screw being fixedly connected to one end of the shaft of each first motor, one end of each first lead screw being rotatably connected to the corresponding strip-shaped groove, opposite threads being formed at both ends of each first lead screw, a first connecting block being threaded to both ends of each first lead screw, and a mounting block being fixedly connected to the bottom surface of each clamping plate, the bottom surface of each mounting block being fixedly connected to the bottom surface of the corresponding first connecting block.

[0009] Preferably, the second transmission assembly includes: two fixed plates, which are distributed front to back and fixedly connected to one side of the clamping plate. A second motor is fixedly connected to one of the fixed plates, and a second lead screw is fixedly connected to one end of the shaft of the second motor. One end of the second lead screw is rotatably connected to the other fixed plate. Opposite threads are opened at both ends of the second lead screw, and two second connecting blocks are threaded to both ends of the second lead screw. A first rectangular through slot is opened on the clamping plate, and a second rectangular through slot is opened on the side of the clamping block near the clamping plate. Both second connecting blocks pass through the first rectangular through slot and the second rectangular through slot and are fixedly connected to the corresponding insert block. The second connecting blocks can slide horizontally along the first rectangular through slot and the second rectangular through slot.

[0010] Preferably, the third transmission assembly includes: a third motor, which is fixedly connected to the top surface of the U-shaped plate; a third lead screw is fixedly connected to the bottom end of the third motor shaft; the bottom end of the third lead screw is rotatably connected to the top surface of the placement plate; both ends of the third lead screw have opposite threads; both ends of the third lead screw are threadedly connected to third connecting blocks; each third connecting block has an inclined connecting rod hinged to one side; and one end of each connecting rod is hinged to a corresponding mounting plate.

[0011] Preferably, each of the U-shaped plates has a limiting rod fixedly connected to the inner walls on both sides, and each limiting rod passes through the corresponding mounting plate and can slide horizontally along the corresponding mounting plate.

[0012] Preferably, the top surface of the placement plate is fixedly connected to a contact plate, the top surface of the contact plate is fixedly installed with several power terminals, the top surface of the placement plate is fixedly connected with several limiting posts, and the bottom surface of the power battery is provided with several power interfaces and limiting holes. The power terminals can be inserted into the corresponding power interfaces, and the limiting posts can be inserted into the corresponding limiting holes.

[0013] Preferably, the bottom surface of the mounting base is fixedly connected to two support beams distributed on the left and right, and each support beam is fixedly connected to two sides of a support plate, and each support plate has several mounting holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention, through the cooperation of the limiting post and the limiting hole, can form a limiting support for the bottom of the power battery during battery swapping, thereby ensuring that the power battery can be installed accurately. 2. Driven by the first transmission component, the two clamping plates and corresponding locking blocks can be moved, so that the locking blocks can be locked into the corresponding slots. Driven by the second transmission component, the insert blocks are inserted into the slots, thereby limiting and fixing the left and right sides of the power battery, thus ensuring the stability of the power battery. 3. Driven by the third transmission component, the insertion rod can move along the U-shaped plate and be inserted into the corresponding insertion hole, thereby limiting and fixing the front and rear sides of the power battery, thus further ensuring the stability of the power battery. 4. The combination of two clamping plates and two U-shaped plates can support the front and rear sides and the left and right sides of the power battery, further improving the stability of the power battery. 5. The buffer components can absorb and cushion the vibrations caused by bumps, thereby improving the shock absorption effect of the power battery and ensuring its safety. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 The right view; Figure 3 yes Figure 1 A bottom view; Figure 4 This is a schematic diagram of the first transmission component; Figure 5This is a schematic diagram of the first transmission component; Figure 6 yes Figure 5 The right view; Figure 7 This is a schematic diagram of the card block structure; Figure 8 This is a schematic diagram of the third transmission component; Figure 9 yes Figure 8 The main view; Figure 10 A schematic diagram of the power battery structure; The following are the labels shown in the diagram: 1. Mounting base; 2. Power motor; 3. Placement plate; 4. Clamping plate; 5. Locking block; 6. Inserting block; 7. U-shaped plate; 8. Mounting plate; 9. Inserting rod; 10. Locking groove; 11. Slot; 12. Strip block; 13. Insertion hole; 14. Vertical rod; 15. Shock-absorbing spring; 16. Limiting block; 17. Strip groove; 18. First motor; 19. First lead screw; 20. First connecting block; 21. Mounting block; 2 2. Fixing plate; 23. Second motor; 24. Second lead screw; 25. Second connecting block; 26. First rectangular through slot; 27. Second rectangular through slot; 28. Third motor; 29. ​​Third lead screw; 30. Third connecting block; 31. Connecting rod; 32. Limiting rod; 33. Contact plate; 34. Power connection post; 35. Limiting post; 36. Power interface; 37. Limiting hole; 38. Support beam; 39. Support plate; 40. Mounting hole. Detailed Implementation

[0017] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various modifications or alterations to the invention, and these equivalent forms also fall within the scope defined by this application.

[0018] like Figure 1-10As shown, the present invention discloses a new energy heavy-duty truck power battery fixing device, including a mounting base 1 and a power battery 2. A placement plate 3 is provided on the top of the mounting base 1. The placement plate 3 is connected to the mounting base 1 through a buffer assembly. Two left-right distributed clamping plates 4 are provided on the top surface of the placement plate 3. The two clamping plates 4 are connected to the placement plate 3 through a first transmission assembly. Hollow internal locking blocks 5 are fixedly connected to the opposite surfaces of the two clamping plates 4. Two front-rear distributed insert blocks 6 are slidably connected to each locking block 5. A second transmission assembly is provided on each clamping plate 4. The second transmission assembly is connected to the corresponding two insert blocks 6. Driven by the first transmission assembly, the two clamping plates 4 and the corresponding locking blocks 5 can be moved, so that the locking blocks 5 can be locked into the corresponding locking slots 10. Under the drive of the second transmission assembly, the insert blocks 6 are inserted into the slots 11, thereby limiting and fixing the left and right sides of the power battery 2, thus ensuring the stability of the power battery 2. The top surface of the placement plate 3 is provided with two U-shaped plates 7 distributed front to back. Each U-shaped plate 7 contains two mounting plates 8 distributed left to right. Each mounting plate 8 has two vertically distributed insertion rods 9 fixedly connected to one side. Each insertion rod 9 passes through the corresponding U-shaped plate 7 and can slide horizontally along the corresponding U-shaped plate 7. Each U-shaped plate 7 is provided with a third transmission assembly, which is connected to the corresponding two mounting plates 8. Driven by the third transmission assembly, the insertion rods 9 can be moved along the U-shaped plate 7 and inserted into the corresponding insertion holes 13, thereby limiting and fixing the front and rear sides of the power battery 2, thus further ensuring the stability of the power battery 2. The power battery 2 has slots 10 on both the left and right sides, and slots 11 are provided on the inner walls of the front and rear sides of each slot 10. The card block 5 can be inserted into the corresponding slot 10, and the plug block 6 can be inserted into the corresponding slot 11. Two strip blocks 12 are fixedly connected to the front and rear sides of the power battery 2. Each strip block 12 has two vertically distributed insertion holes 13. Each plug rod 9 can be inserted into the corresponding insertion hole 13.

[0019] like Figure 1 and Figure 2 As shown, the buffer assembly includes: four vertical rods 14, which are fixedly connected to the four corners of the top surface of the mounting base 1. Each of the four vertical rods 14 passes through the placement plate 3 and can slide up and down along the placement plate 3. Each vertical rod 14 is fitted with a shock-absorbing spring 15 on its outer periphery. The top end of each shock-absorbing spring 15 is fixedly connected to the bottom surface of the placement plate 3, and the bottom end of each shock-absorbing spring 15 is fixedly connected to the top surface of the mounting base 1. Each vertical rod 14 is fixedly connected to a limiting block 16.

[0020] Specifically, when a bump occurs, the placement plate 3 is subjected to force, which applies downward pressure to the shock-absorbing spring 15. The shock-absorbing spring 15 is compressed under the force, resulting in elastic deformation. The placement plate 3 slides downward along the vertical rod 14. At the same time, under the action of the elastic force, the shock-absorbing spring 15 applies an upward pushing force to the placement plate 3, which in turn causes the placement plate 3 to slide upward along the vertical rod 14. Thus, under the action of the elastic force of the shock-absorbing spring 15, the vibration generated by the bump is absorbed, preventing damage to the power battery 2, ensuring the safety of the power battery 2, and improving the service life of the power battery 2.

[0021] like Figure 1 and Figure 3 As shown, the first transmission assembly includes: two strip-shaped grooves 17 formed on the top surface of the placement plate 3, the two strip-shaped grooves 17 being distributed front and rear, a first motor 18 being fixedly connected in each strip-shaped groove 17, a first lead screw 19 being fixedly connected to one end of the shaft of each first motor 18, a first lead screw 19 being rotatably connected to one end of the corresponding strip-shaped groove 17, opposite threads being formed at both ends of each first lead screw 19, a first connecting block 20 being threaded to both ends of each first lead screw 19, a mounting block 21 being fixedly connected to the bottom surface of each clamping plate 4, and the bottom surface of each mounting block 12 being fixedly connected to the bottom surface of the corresponding first connecting block 20.

[0022] Specifically, the first motor 18 operates, driving the first lead screw 19 to rotate. The first lead screw 19 is threadedly connected to the first connecting block 20. Thus, when the first lead screw 19 rotates, it will drive the two corresponding first connecting blocks 20 to move in opposite directions (or relative to each other) along the first lead screw 19. The movement of the first connecting block 20 drives the mounting block 21 to move, and the movement of the mounting block 21 drives the locking block 5 to move, so that the locking block 5 can be locked into the locking slot 10 (or moved out of the locking slot 10), thereby forming a limiting and fixing on both sides of the power battery 2.

[0023] like Figure 1 , Figure 5 and Figure 7 As shown, the second transmission assembly includes two fixed plates 22, which are distributed front to back and fixedly connected to one side of the clamping plate 4. A second motor 23 is fixedly connected to one of the fixed plates 22. One end of the shaft of the second motor 23 is fixedly connected to a second lead screw 24. One end of the second lead screw 24 is rotatably connected to the other fixed plate 22. The two ends of the second lead screw 24 have opposite threads. The two ends of the second lead screw 24 are threadedly connected to two second connecting blocks 25. A first rectangular through slot 26 is provided on the clamping plate 4. A second rectangular through slot 27 is provided on the side of the locking block 5 near the clamping plate 4. Both second connecting blocks 25 pass through the first rectangular through slot 26 and the second rectangular through slot 27 and are fixedly connected to the corresponding insert block 6. The second connecting blocks 25 can slide horizontally along the first rectangular through slot 26 and the second rectangular through slot 27.

[0024] Specifically, the second motor 23 operates, driving the second lead screw 24 to rotate. The second lead screw 24 is threadedly connected to the second connecting block 25. The rotation of the second lead screw 24 drives the corresponding two second connecting blocks 25 to move horizontally along the second lead screw 24. The movement of the second connecting blocks 25 drives the corresponding insert block 6 to move, so that the insert block 6 can be inserted into the corresponding slot 11, further limiting and fixing both sides of the power battery 2.

[0025] like Figure 1 , Figure 8 and Figure 9 As shown, the third transmission component includes: a third motor 28, which is fixedly connected to the top surface of the U-shaped plate 7. The bottom end of the shaft of the third motor 28 is fixedly connected to a third lead screw 29. The bottom end of the third lead screw 29 is rotatably connected to the top surface of the placement plate 3. Both ends of the third lead screw 29 have opposite threads. Both ends of the third lead screw 29 are threadedly connected to third connecting blocks 30. Each third connecting block 30 has an inclined connecting rod 31 hinged to one side. One end of each connecting rod 31 is hinged to the corresponding mounting plate 8.

[0026] Specifically, the third motor 28 operates, driving the third lead screw 29 to rotate. The third connecting block 30 is threadedly connected to the third lead screw 29. The rotation of the second lead screw can drive the third connecting block 30 to move vertically along the third lead screw 29. The movement of the third moving block 30 drives the connecting rod 31 to move. The movement of the connecting rod 31 can drive the mounting plate 8 to move. The movement of the mounting plate 8 can drive the insertion rod 9 to move along the U-shaped plate 7, thereby allowing the insertion rod 9 to be inserted into the insertion hole 13, thus forming a limiting and fixing on the front and rear sides of the power battery 2.

[0027] like Figure 1 , Figure 8 and Figure 9 As shown, each of the U-shaped plates 7 has a limiting rod 32 fixedly connected to the inner walls on both sides. Each limiting rod 32 passes through the corresponding mounting plate 8 and can slide horizontally along the corresponding mounting plate 8.

[0028] Specifically, the limiting rod 32 provides support and limits the mounting plate 8, ensuring that the mounting plate 8 can move stably.

[0029] like Figure 1 , Figure 2 and Figure 10 As shown, the top surface of the placement plate 3 is fixedly connected to the contact plate 33, and several power connection posts 34 are fixedly installed on the top surface of the contact plate 33. Several limiting posts 35 are fixedly connected to the top surface of the placement plate 3. Several power interfaces 36 and limiting holes 37 are opened on the bottom surface of the power battery 2. The power connection posts 34 can be inserted into the corresponding power interfaces 36, and the limiting posts 35 can be inserted into the corresponding limiting holes 37.

[0030] Specifically, the power connector 34 is inserted into the power interface 36, enabling the power battery 2 to provide power to the new energy battery. The limiting pin 34 is inserted into the limiting hole 37, which forms a limiting support at the bottom of the power battery 2, thereby ensuring that the power battery 2 can be installed accurately.

[0031] like Figure 1 and Figure 3 As shown, the bottom surface of the mounting base 1 is fixedly connected to two left and right distributed support beams 38, and each support beam 38 is fixedly connected to two sides of a support plate 39. Each support plate 39 has several mounting holes 40.

[0032] Specifically, the support beam 38 provides support and fixation for the mounting base 1. At the same time, through the cooperation of the support plate 39 and the mounting block 49, the mounting base 1 can be fixedly installed, ensuring the stability of the mounting base 1.

[0033] This solution also includes a controller, the location of which is set by the operator according to the actual situation during operation. The controller is used to control the electrical components used in this solution. The controller is one of an Intel processor, AMD processor, PLC controller, ARM processor, or microcontroller. It is used in conjunction with a motherboard, memory modules, storage media, and power supply, which is AC power or a lithium battery. When a display screen is provided, a graphics card is also provided. For the operating principle of the controller, please refer to "Principles of Automatic Control", "Principles and Application Simulation Cases of Microcontrollers", and "Principles and Applications of Sensors" published by Tsinghua University Press. Other books in this field can also be consulted. Other automation control and electrical components not mentioned are knowledge well known to those skilled in the art and will not be described in detail here.

[0034] Working principle: First, the support plate 39 and the mounting block 49 cooperate to fix the mounting base 1, ensuring the stability of the mounting base 1. Then, the power battery 2 is hoisted to the top of the placement plate 3 by the hoisting device, and then the power battery 2 is slowly lowered. During the descent, the strip block 12 on the power battery 2 contacts the corresponding sides of the U-shaped plate 7 and slides down along the U-shaped plate 7, thereby forming an initial limit on the power battery 2. Then, the power connection post 34 is inserted into the power interface 36 to form a power circuit, which enables the power battery 2 to provide power to the new energy battery. The limit post 34 is inserted into the limit hole 37, which forms a limit support at the bottom of the power battery 2, thereby ensuring that the power battery 2 can be installed accurately. Then, the first motor 18 operates, driving the first lead screw 19 to rotate. The first lead screw 19 is threadedly connected to the first connecting block 20. As the first lead screw 19 rotates, it drives the two corresponding first connecting blocks 20 to move relative to each other along the first lead screw 19. The movement of the first connecting block 20 drives the mounting block 21 to move, and the movement of the mounting block 21 drives the locking block 5 to move, so that the locking block 5 can be locked into the slot 10, thereby limiting and fixing both sides of the power battery 2. Next, the second motor 23 operates, driving the second lead screw 24 to rotate. The second lead screw 24 is threadedly connected to the second connecting block 25. As the second lead screw 24 rotates, it drives the two corresponding second connecting blocks 25 to move horizontally along the second lead screw 24. The movement of the second connecting block 25 drives the corresponding insertion block 6 to move, so that the insertion block 6 can be locked into the corresponding slot 11, further limiting and fixing both sides of the power battery 2. Then, the third motor 28 operates, driving the third lead screw 29 to rotate. The third connecting block 30 is threadedly connected to the third lead screw 29. The rotation of the second lead screw causes the third connecting block 30 to move vertically along the third lead screw 29. The movement of the third moving block 30 causes the connecting rod 31 to move, which in turn causes the mounting plate 8 to move. The mounting plate 8 then causes the insertion rod 9 to move along the U-shaped plate 7, allowing the insertion rod 9 to be inserted into the insertion hole 13. This provides a limiting fixation for the front and rear sides of the power battery 2. Furthermore, with the cooperation of the clamping plate 4 and the U-shaped plate 7, the surrounding surfaces of the power battery 2 are supported and limited, ensuring the stability of the power battery 2. The cooperation of the locking block 5, the locking groove 10, and the insertion rod 9 with the insertion hole 13 further limits and fixes the surrounding surfaces of the power battery 2, ensuring its stability.

[0035] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0036] In the description of this invention, it should be understood that the terms "upper," "side," "inner," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. In addition, it should be noted that unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mounting device for a power battery of a new energy heavy-duty truck, comprising a mounting base (1) and a power battery (2), characterized in that, The mounting base (1) is provided with a placement plate (3) above it. The placement plate (3) is connected to the mounting base (1) through a buffer assembly. The top surface of the placement plate (3) is provided with two left and right distributed clamping plates (4). The two clamping plates (4) are connected to the placement plate (3) through a first transmission assembly. The opposing surfaces of the two clamping plates (4) are fixedly connected with hollow internal locking blocks (5). Each locking block (5) is slidably connected with two front and rear distributed insert blocks (6). Each clamping plate (4) is provided with a second transmission assembly. The second transmission assembly is connected to the corresponding two insert blocks (6). The top surface of the placement plate (3) is provided with two U-shaped plates (7) distributed front and back. Each U-shaped plate (7) is provided with two mounting plates (8) distributed left and right. Each mounting plate (8) is fixedly connected to one side with two vertically distributed insert rods (9). Each insert rod (9) passes through the corresponding U-shaped plate (7) and can slide horizontally along the corresponding U-shaped plate (7). Each U-shaped plate (7) is provided with a third transmission assembly. The third transmission assembly is connected to the corresponding two mounting plates (8). The power battery (2) has slots (10) on both the left and right sides. Each slot (10) has slots (11) on the inner walls of both the front and rear sides. The card block (5) can be inserted into the corresponding slot (10). The plug block (6) can be inserted into the corresponding slot (11). The power battery (2) has two strip blocks (12) that are distributed left and right on both the front and rear sides. Each strip block (12) has two insertion holes (13) that are distributed up and down. Each plug rod (9) can be inserted into the corresponding insertion hole (13).

2. The new energy heavy-duty truck power battery fixing device according to claim 1, characterized in that, The buffer assembly includes: four vertical rods (14), which are fixedly connected to the four corners of the top surface of the mounting base (1). The four vertical rods (14) all pass through the placement plate (3) and can slide up and down along the placement plate (3). Each vertical rod (14) is fitted with a shock-absorbing spring (15) on its outer periphery. The top of each shock-absorbing spring (15) is fixedly connected to the bottom surface of the placement plate (3). The bottom of each shock-absorbing spring (15) is fixedly connected to the top surface of the mounting base (1). Each vertical rod (14) is fixedly connected to a limiting block (16).

3. The new energy heavy-duty truck power battery fixing device according to claim 1, characterized in that, The first transmission assembly includes: two strip grooves (17) formed on the top surface of the placement plate (3), the two strip grooves (17) being distributed front and back, a first motor (18) being fixedly connected in each strip groove (17), a first lead screw (19) being fixedly connected to one end of the shaft of each first motor (18), a first lead screw (19) being rotatably connected to one end of each first lead screw (19), opposite threads being formed at both ends of each first lead screw (19), a first connecting block (20) being threaded to both ends of each first lead screw (19), an mounting block (21) being fixedly connected to the bottom surface of each clamping plate (4), and the bottom surface of each mounting block (12) being fixedly connected to the bottom surface of the corresponding first connecting block (20).

4. The new energy heavy-duty truck power battery fixing device according to claim 3, characterized in that, The second transmission assembly includes two fixed plates (22), which are distributed front to back and fixedly connected to one side of the clamping plate (4). A second motor (23) is fixedly connected to one of the fixed plates (22). A second lead screw (24) is fixedly connected to one end of the shaft of the second motor (23). One end of the second lead screw (24) is rotatably connected to the other fixed plate (22). Opposite threads are opened at both ends of the second lead screw (24). Two second connecting blocks (25) are threaded to both ends of the second lead screw (24). A first rectangular through slot (26) is opened on the clamping plate (4). A second rectangular through slot (27) is opened on the side of the clamping block (5) near the clamping plate (4). Both second connecting blocks (25) pass through the first rectangular through slot (26) and the second rectangular through slot (27) and are fixedly connected to the corresponding insert block (6). The second connecting block (25) can slide horizontally along the first rectangular through slot (26) and the second rectangular through slot (27).

5. A new energy heavy-duty truck power battery fixing device according to claim 4, characterized in that, The third transmission component includes: a third motor (28), which is fixedly connected to the top surface of the U-shaped plate (7). The bottom end of the shaft of the third motor (28) is fixedly connected to a third lead screw (29). The bottom end of the third lead screw (29) is rotatably connected to the top surface of the placement plate (3). Both ends of the third lead screw (29) are provided with opposite threads. Both ends of the third lead screw (29) are threadedly connected to a third connecting block (30). Each third connecting block (30) is hinged to one side with an inclined connecting rod (31). One end of each connecting rod (31) is hinged to the corresponding mounting plate (8).

6. A new energy heavy-duty truck power battery fixing device according to claim 5, characterized in that, Each of the U-shaped plates (7) has a limiting rod (32) fixedly connected to the inner walls on both sides. Each limiting rod (32) passes through the corresponding mounting plate (8) and can slide horizontally along the corresponding mounting plate (8).

7. A new energy heavy-duty truck power battery fixing device according to claim 1, characterized in that, The top surface of the placement plate (3) is fixedly connected to the contact plate (33), and several power connection posts (34) are fixedly installed on the top surface of the contact plate (33). Several limiting posts (35) are fixedly connected to the top surface of the placement plate (3). Several power interfaces (36) and limiting holes (37) are opened on the bottom surface of the power battery (2). The power connection posts (34) can be inserted into the corresponding power interfaces (36), and the limiting posts (35) can be inserted into the corresponding limiting holes (37).

8. The new energy heavy-duty truck power battery fixing device according to claim 1, characterized in that, The mounting base (1) has two left and right distributed support beams (38) fixedly connected to its bottom surface. Each support beam (38) has a support plate (39) fixedly connected to both sides. Each support plate (39) has several mounting holes (40).

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