Hybrid power semitrailer battery structure and BMU-PCU cooperative controller
The mechanical linkage installation mechanism and limit frame design of the C-shaped frame and limit slot solves the problem of loose connection between the battery and the BMU-PCU collaborative controller in the hybrid semi-trailer, achieves a stable connection, simplifies the installation and disassembly steps, improves work efficiency and prevents equipment damage.
Patent Information
- Application Number
- CN202510837302.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-09-09
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In hybrid semi-trailers, the connection between the battery and the BMU-PCU collaborative controller becomes loose due to vibration, affecting the reliability of the electrical connection and equipment safety. Traditional screw fixings can easily damage the equipment surface.
The mechanical linkage installation mechanism adopts a C-shaped frame and limit slot, combined with the design of the limit rod and limit frame. The driving shaft drives the connecting rod to achieve a stable connection of the controller, and the cooperation of the limit frame and torsion spring ensures a stable connection between the plug and the socket to avoid loosening.
It simplifies the installation and disassembly steps, improves work efficiency, prevents damage to the equipment surface, enhances the stability of the connection, and avoids poor contact and functional failures caused by vibration.
Smart Images
Figure CN120614780A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electric vehicle battery structures, and in particular to a hybrid semi-trailer battery structure and a BMU-PCU collaborative controller. Background Art
[0002] Hybrid semi-trailers achieve flexible switching and coordination of power output by integrating internal combustion engines (such as diesel engines) with electric motors, battery packs and other electric drive systems. They show significant advantages in energy saving, power, safety and scenario adaptability, and are particularly suitable for complex road conditions and specific transportation needs. In terms of layout, batteries are usually installed between frames, near the drive axle or in dedicated modules to optimize space utilization and heat dissipation. The BMU (battery management unit) is responsible for monitoring the battery status (voltage, current, temperature), controlling battery charging and discharging, and communicating with the vehicle control system. As the core of the electric drive system, the PCU (power control unit) is responsible for distributing energy flow, controlling the operating mode of the motor or generator, and realizing torque request response, hill assist, charging and other functions.
[0003] The battery structure and the BMU-PCU coordinated controller are typically secured together by screwing screws into the controller's mounting bracket. The battery's circuit wiring is then connected to the controller. During vehicle operation, due to constant vibration and bumps, the screws may gradually loosen due to the long-term stress, resulting in an unstable connection between the battery and the controller. This loosening not only affects the reliability of the electrical connection but also can generate noise due to mechanical vibration and even damage components. Screw tightening requires precise torque control. If the torque is too low, the connection may be loose; if the torque is too high, it may damage the screw hole or the component surface, leading to connection failure or component damage. Furthermore, vibration at the circuit wiring connection may cause signal transmission interruption or unstable power supply. This poor contact can prevent the controller from accurately receiving battery status information, affecting the vehicle's power distribution and energy management. Poor contact caused by looseness can accelerate wear of the connector plating, deform the pins, and even cause device-level failures. Summary of the Invention
[0004] The purpose of the present invention is to provide a hybrid semi-trailer battery structure and a BMU-PCU collaborative controller to solve the problems raised by the above background technology.
[0005] The technical solution adopted by the present application to solve the technical problem is: a hybrid semi-trailer battery structure and BMU-PCU coordinated controller, comprising: a housing, a cover plate fixedly provided on one side of the housing, a battery pack provided in the inner cavity of the housing, a controller body provided on the sidewalls of the housing, fans fixedly provided on both sides of the controller body on the housing, a connector electrically connected to the controller body provided on the housing, and further comprising: A mounting mechanism is provided on the controller body and the housing, the mounting mechanism comprising a C-shaped frame fixedly provided on one side of the housing, the C-shaped frame having a limit slot provided on a side close to the housing, the limit slot being adapted to fit the controller body, and the mounting mechanism being used to adapt and assemble the controller body and the housing into one piece; A limiting mechanism is provided on the controller body, and the limiting mechanism includes a socket provided on the controller body and a connector on the connector. A connecting wire is provided on the connector for connecting the connector, and a limiting frame is provided directly above the connector. The limiting mechanism is used to maintain a stable connection between the controller body and the connector.
[0006] Preferably, the mounting mechanism further comprises a driving shaft rotatably arranged on a side wall of the housing close to the controller body, and the driving shaft is externally connected to an external drive.
[0007] Preferably, a connecting rod 1 is fixedly provided on the outer surface of the driving shaft, a connecting shaft 1 is fixedly provided on the top of both ends of the connecting rod 1, a connecting rod 2 is rotatably provided on the outer surface of the connecting shaft 1, and a connecting shaft 2 is rotatably provided on the end of the connecting rod 2 away from the connecting shaft 1.
[0008] Preferably, guide rails are symmetrically fixedly provided on the housing, a slider is provided on the guide rail, the top of the slider is fixedly connected to the second connecting shaft, and a limiting rod is fixedly provided on a side of the slider close to the controller body.
[0009] Preferably, the limiting rod is configured to be L-shaped, and the inner end portion of the limiting rod is kept flush with one end of the controller body.
[0010] Preferably, the limiting mechanism also includes a groove symmetrically arranged on the side wall of the controller body, a sliding rod is slidably connected in the groove, the end of the sliding rod is fixedly connected to the limiting frame, the limiting frames are distributed in a linear row, and connecting strips are fixedly arranged between the limiting frames.
[0011] Preferably, a fixing rod is fixedly provided on the connecting strip provided in the middle of the controller body, a clamping groove is symmetrically provided on the fixing rod, a through groove is penetrated through the fixing rod, and a columnar rod is fixedly connected to the inner wall of the through groove.
[0012] Preferably, a telescopic spring is sleeved on the outer surface of the cylindrical rod, a stop block is slidably provided on the outer surface of the cylindrical rod, and the telescopic spring is located between the stop block and a side wall of one side of the through-groove.
[0013] Preferably, a fixing plate is fixedly provided on the side wall of the controller body, columns are symmetrically fixedly provided on the fixing plate, and rotating blocks are rotatably connected to the tops of the columns, and the rotating blocks are symmetrically provided.
[0014] Preferably, a torsion spring is sleeved on the outer surface of the column, and the torsion spring is located between the rotating block and the fixed plate. A limiting column is also symmetrically fixed on the fixed plate, and the limiting column is located on the side opposite to the rotating block.
[0015] The beneficial effects of this application are: The present application provides a hybrid semi-trailer battery structure and a BMU-PCU collaborative controller, which preliminarily limits the outer side of the controller body through the limit groove on the C-shaped frame, and then starts the external drive of the drive shaft to cause the drive shaft to rotate, driving the connecting rod one to rotate synchronously. When the connecting rod one rotates, it will pull the connecting rod two and cause the slider to slide on the guide rail. The relative sliding of the slider causes the limit rods to move toward each other synchronously until they buckle the edge of the controller body, causing the controller body to be confined in the limit groove and no further displacement will occur, avoiding traditional screw fixing. No additional tools such as screwdrivers are required. The operator only needs to start the drive shaft to automatically complete the fixing process through mechanical linkage, further simplifying the installation and disassembly steps and improving work efficiency.
[0016] The present application provides a hybrid semi-trailer battery structure and BMU-PCU collaborative controller. By pressing the limit frame, the limit frame is caused to move toward the side of the plug, causing the slot on the fixed rod to gradually approach the rotating block. When the fixed rod is in contact with the rotating block, the extrusion force applied causes the rotating block to rotate, and the torsion spring begins to accumulate force and continues to squeeze until the slot and the side walls of the rotating block are on the same horizontal line. The deformation of the torsion spring causes the rotating block to be stuck in the slot. At this time, the limit frame covers the side wall of the joint and limits the joint to prevent the joint from loosening during vehicle driving. When the joint needs to be inspected, the operator rotates one side of the block to squeeze the block, causing the block to squeeze the rotating block, thereby causing the rotating block to disengage from the slot. The limit frame can be slid into the groove through the slide bar. After the limit is released, the operator can quickly perform inspection.
[0017] In addition to the above-described purposes, features and advantages, the present application has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the inner cavity structure of the shell of the present invention; Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle; Figure 4 It is a schematic diagram of the overall structure of the installation mechanism of the present invention; Figure 5 This is a schematic diagram of the partial structure of the upper mechanism of the controller body of the present invention; Figure 6 For the present invention Figure 1 Schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the fixing rod structure of the present invention; Figure 8 It is a schematic diagram of the fixed plate structure of the present invention.
[0019] Description of the figure number: 1. Casing; 2. Cover; 3. Battery pack; 4. Controller body; 5. Connector; 6. Fan; 7. Mounting mechanism; 8. Drive shaft; 9. Connecting rod 1; 10. Connecting shaft 1; 11. Connecting rod 2; 12. Connecting shaft 2; 13. Guide rail; 14. Slider; 15. Limit rod; 16. C-shaped frame; 17. Limiting groove; 18. Limiting mechanism; 19. Socket; 20. Connector; 21. Connecting wire; 22. Groove; 23. Slider; 24. Limiting frame; 25. Connecting strip; 26. Fixed rod; 27. Slot; 28. Through slot; 29. Column rod; 30. Telescopic spring; 31. Block; 32. Fixed plate; 33. Column; 34. Rotating block; 35. Torsion spring; 36. Limiting column. DETAILED DESCRIPTION
[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0021] In order to enable those skilled in the art to better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.
[0022] Please refer to Figures 1 to 8 A hybrid semi-trailer battery structure and BMU-PCU coordinated controller includes: a housing 1, a cover plate 2 fixedly mounted on one side of the housing 1, and a battery pack 3 disposed within the housing 1. The battery pack 3 utilizes a modular design, with each battery module tightly connected via highly conductive connectors to ensure efficient and stable power transmission. A controller body 4 is mounted on the sidewalls of the housing 1, with fans 6 fixedly mounted on both sides of the housing 1. The housing 1 also includes a connector 5 electrically connected to the controller body 4, employing a plug-in, quick-connect design. The BMU-PCU collaborative controller is a core component that integrates the Battery Management Unit (BMU) and Power Control Unit (PCU) in electric vehicles, energy storage systems, and industrial equipment. Its architecture utilizes a layered design: the BMU monitors battery cell voltage, temperature, and balancing, communicating with upper layers via the CAN bus. The PCU handles energy conversion (such as inverter control and motor drive / generation) and power distribution for the electric drive system. The two interact through real-time data exchange to form a closed-loop control loop, optimizing system efficiency and safety.
[0023] Please refer to the Figures 1 to 5 A hybrid semi-trailer battery structure and BMU-PCU coordinated controller also includes: a mounting mechanism 7, which is arranged on the controller body 4 and the housing 1. The mounting mechanism 7 includes a C-shaped frame 16 fixedly arranged on one side of the housing 1. The C-shaped frame 16 is provided with a limiting groove 17 on the side close to the housing 1. The limiting groove 17 is mutually adapted with the controller body 4. The mounting mechanism 7 is used to adapt and assemble the controller body 4 and the housing 1 into one. The mounting mechanism 7 also includes a drive shaft 8 rotatably arranged on the side wall of the housing 1 close to the controller body 4. The drive shaft 8 is externally connected to an external drive. A connecting rod 1 9 is fixedly arranged on the outer surface of the drive shaft 8. A connecting shaft 10 is fixedly arranged on the top of each end of the connecting rod 1 9. A connecting rod 2 11 is rotatably arranged on the outer surface of the connecting shaft 10. A connecting shaft 2 12 is rotatably arranged on the end of the connecting rod 2 11 away from the connecting shaft 10. Guide rails 13 are symmetrically fixedly mounted on the housing 1. Sliders 14 are mounted on the guide rails 13. The tops of the slides 14 are fixedly connected to the second connecting shaft 12. A limit rod 15 is fixedly mounted on the side of the slide 14 near the controller body 4. The limit rod 15 is L-shaped, with the inner end of the limit rod 15 flush with one end of the controller body 4.
[0024] The outer side of the controller body 4 is initially limited by the limiting groove 17 on the C-shaped frame 16, and then the external drive of the drive shaft 8 is started, causing the drive shaft 8 to rotate, driving the connecting rod 1 9 to rotate synchronously. When the connecting rod 1 9 rotates, it pulls the connecting rod 2 11 and causes the slider 14 to slide on the guide rail 13. The relative sliding of the slider 14 causes the limiting rod 15 to move synchronously toward each other until it catches the edge of the controller body 4, causing the controller body 4 to be confined within the limiting groove 17 and no further displacement occurs. This avoids traditional screw fixing and does not require additional tools such as screwdrivers. The operator only needs to start the drive shaft 8 to automatically complete the fixing process through mechanical linkage, further simplifying the installation and disassembly steps and improving work efficiency. Traditional screw fixing may leave scratches or indentations on the surface of the device. However, this design avoids direct pressure on the device surface through the mechanical engagement of the limiting groove 17 and the limiting rod 15, thereby effectively protecting the appearance and integrity of the controller body 4.
[0025] Please refer to the Figure 1 、 Figure 3 as well as Figures 6 to 8 A hybrid semi-trailer battery structure and BMU-PCU collaborative controller also includes: a limiting mechanism 18, the limiting mechanism 18 is set on the controller body 4, the limiting mechanism 18 includes a socket 19 set on the controller body 4 and a connector 20 on the connector 5, a connecting line 21 is set on the connector 5 for connecting to the connector 20, and a limiting frame 24 is set directly above the connector 20. The limiting mechanism 18 is used to maintain a stable connection between the controller body 4 and the connector 5.
[0026] A stopper mechanism 18 maintains a tight connection between the plug and socket 19, preventing loosening caused by vehicle jolting or vibration. This could lead to poor contact, arcing, or unexpected power outages. This stopper actively constrains plug movement, preventing malfunctions caused by short circuits, sparks, or signal interruptions, a crucial feature for safety-sensitive systems.
[0027] Furthermore, the limiting mechanism 18 includes a groove 22 symmetrically arranged on the side wall of the controller body 4. A slide rod 23 is slidably connected within the groove 22. The ends of the slide rod 23 are fixedly connected to the limiting frames 24. The limiting frames 24 are arranged in a linear array, and a connecting bar 25 is fixedly arranged between the limiting frames 24. A fixing rod 26 is fixedly mounted on the connecting bar 25 in the middle of the controller body 4. The fixing rod 26 has symmetrical slots 27 formed therein. A through-slot 28 is formed through the fixing rod 26, and a cylindrical rod 29 is fixedly connected to the inner wall of the through-slot 28. A telescopic spring 30 is sleeved on the outer surface of the cylindrical rod 29. A stop block 31 is slidably mounted on the outer surface of the cylindrical rod 29. The telescopic spring 30 is located between the stop block 31 and the side wall of the through-slot 28. A fixing plate 32 is fixedly mounted on the side wall of the controller body 4. A column 33 is symmetrically fixed to the fixing plate 32. A rotating block 34 is rotatably connected to the top of the column 33. The rotating blocks 34 are symmetrically arranged. A torsion spring 35 is sleeved on the outer surface of the column 33 , and the torsion spring 35 is located between the rotating block 34 and the fixed plate 32 . A limiting column 36 is also symmetrically fixed on the fixed plate 32 , and the limiting column 36 is located on the side opposite to the rotating block 34 .
[0028] When the locking cam 35 is in the closed position, the locking cam 35 is in the closed position, and the locking cam 35 is in the closed position, so that the locking cam 35 is in the closed position and the locking cam 35 is in the closed position.
[0029] Through all the above embodiments, the working principle of the present invention is: The operator places the controller body 4 into the limiting groove 17 on the C-shaped frame 16, preliminarily limits the outer side of the controller body 4, and then starts the external drive of the drive shaft 8, causing the drive shaft 8 to rotate, driving the connecting rod 1 9 to rotate synchronously. When the connecting rod 1 9 rotates, it pulls the connecting rod 2 11 and causes the slider 14 to slide on the guide rail 13. The relative sliding of the slider 14 causes the limiting rod 15 to move synchronously toward each other until it catches the edge of the controller body 4, causing the controller body 4 to be confined in the limiting groove 17 and no further displacement occurs. This avoids traditional screw fixing and does not require additional tools such as screwdrivers. The operator only needs to start the drive shaft 8 to automatically complete the fixing process through mechanical linkage, further simplifying the installation and disassembly steps and improving work efficiency. Traditional screw fixing may leave scratches or indentations on the surface of the device. However, this design avoids direct pressure on the device surface through the mechanical engagement of the limiting groove 17 and the limiting rod 15, thereby effectively protecting the appearance and integrity of the controller body 4. The controller body 4 is limited along the X-axis, Y-axis and Z-axis by the limiting groove 17 and the limiting rod 15, thereby enhancing the stability of the connection and preventing the controller body 4 from loosening due to vibration during vehicle driving; by pressing the limiting frame 24, the limiting frame 24 is caused to move toward the side of the plug, causing the slot 27 on the fixed rod 26 to gradually approach the rotating block 34. When the fixed rod 26 is in contact with the rotating block 34, the extrusion force exerted causes the rotating block 34 to rotate, and the torsion spring 35 begins to accumulate force, and continues to squeeze until the slot 27 and the side wall of the rotating block 34 are in contact with each other. When the connectors 20 and 20 are on the same horizontal line, the torsion spring 35 deforms to force the rotating block 34 into the slot 27. At this time, the limit frame 24 covers the side wall of the connector 20 and limits the connector 20 to prevent the connector 20 from loosening during vehicle operation. When the connector 20 needs to be repaired, the operator rotates the block 34 on one side to squeeze the retaining block 31, causing the retaining block 31 to squeeze the rotating block 34, thereby disengaging the rotating block 34 from the slot 27. The limit frame 24 can be slid into the groove 22 through the slide bar 23. After the limit is released, the operator can quickly perform maintenance. The limit mechanism 18 maintains a tight connection between the plug and the socket 19 to prevent the plug from loosening due to bumps or vibrations during vehicle operation. Loosening may cause poor contact, arcing, or accidental power failure of the equipment. The limit design actively constrains the displacement of the plug to avoid functional failures caused by short circuits, sparks, or signal interruptions.
[0030] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative, and within the scope of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.
[0031] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A hybrid semi-trailer battery structure and BMU-PCU coordinated controller, comprising: A housing (1), a cover plate (2) fixedly provided on one side of the housing (1), a battery pack (3) provided in an inner cavity of the housing (1), a controller body (4) provided on a side wall of the housing (1), fans (6) fixedly provided on both sides of the controller body (4) on the housing (1), a connector (5) electrically connected to the controller body (4) also provided on the housing (1), and characterized in that it further comprises: A mounting mechanism (7), wherein the mounting mechanism (7) is arranged on the controller body (4) and the housing (1), the mounting mechanism (7) comprises a C-shaped frame (16) fixedly arranged on one side of the housing (1), a limiting groove (17) is provided on a side of the C-shaped frame (16) close to the housing (1), the limiting groove (17) and the controller body (4) are adapted to each other, and the mounting mechanism (7) is used to adapt and assemble the controller body (4) and the housing (1) into one body; A limiting mechanism (18) is provided on the controller body (4), the limiting mechanism (18) comprises a socket (19) provided on the controller body (4) and a connector (20) on the connector (5), a connecting line (21) is provided on the connector (5) for connecting to the connector (20), a limiting frame (24) is provided directly above the connector (20), and the limiting mechanism (18) is used to maintain a stable connection between the controller body (4) and the connector (5).
2. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 1, characterized in that: The mounting mechanism (7) further comprises a drive shaft (8) rotatably arranged on a side wall of the housing (1) close to the controller body (4), and the drive shaft (8) is externally connected to an external drive.
3. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 2, characterized in that: A connecting rod 1 (9) is fixedly provided on the outer surface of the driving shaft (8), a connecting shaft 1 (10) is fixedly provided on the top of both ends of the connecting rod 1 (9), a connecting rod 2 (11) is rotatably provided on the outer surface of the connecting shaft 1 (10), and a connecting shaft 2 (12) is rotatably provided on the end of the connecting rod 2 (11) away from the connecting shaft 1 (10).
4. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 3, characterized in that: A guide rail (13) is symmetrically fixedly provided on the housing (1), a slider (14) is provided on the guide rail (13), the top of the slider (14) is fixedly connected to the second connecting shaft (12), and a limiting rod (15) is fixedly provided on a side of the slider (14) close to the controller body (4).
5. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 4, characterized in that: The limiting rod (15) is configured to be L-shaped, and the inner end of the limiting rod (15) is kept flush with one end of the controller body (4).
6. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 1, characterized in that: The limiting mechanism (18) further comprises a groove (22) symmetrically arranged on the side wall of the controller body (4), a slide rod (23) being slidably connected in the groove (22), an end of the slide rod (23) being fixedly connected to a limiting frame (24), the limiting frames (24) being linearly arranged in a row, and connecting bars (25) being fixedly arranged between the limiting frames (24).
7. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 6, characterized in that: A fixing rod (26) is fixedly provided on a connecting strip (25) provided in the middle of the controller body (4), a clamping groove (27) is symmetrically provided on the fixing rod (26), a through groove (28) is provided through the fixing rod (26), and a columnar rod (29) is fixedly connected to the inner wall of the through groove (28).
8. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 7, characterized in that: The outer surface of the columnar rod (29) is sleeved with a telescopic spring (30), and the outer surface of the columnar rod (29) is slidably provided with a stop block (31), and the telescopic spring (30) is located between the stop block (31) and a side wall of one side of the through slot (28).
9. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 8, characterized in that: A fixed plate (32) is fixedly provided on the side wall of the controller body (4), upright posts (33) are symmetrically fixedly provided on the fixed plate (32), and a rotating block (34) is rotatably connected to the top of the upright post (33), and the rotating block (34) is symmetrically provided.
10. The hybrid semi-trailer battery structure and BMU-PCU coordinated controller according to claim 9, characterized in that: A torsion spring (35) is sleeved on the outer surface of the column (33), and the torsion spring (35) is located between the rotating block (34) and the fixed plate (32). A limiting column (36) is also symmetrically fixed on the fixed plate (32), and the limiting column (36) is located on the side opposite to the rotating block (34).