Modular replaceable electric vehicle chassis battery compartment

Abstract

This invention discloses a modular and replaceable battery compartment for an electric vehicle chassis, including a vehicle chassis. Four limiting blocks are installed in the center of the chassis bottom. A housing assembly is slidably installed on the inner side between the four limiting blocks. Each of the four limiting blocks and the vehicle chassis has a mounting groove on one side. An output assembly is installed inside each of the four mounting grooves, and a clamping assembly is installed on the output assembly. A transmission assembly is rotatably installed inside the housing assembly. A lifting assembly is installed outside the transmission assembly, and a battery compartment assembly is slidably installed on the lifting assembly. A protective assembly is provided outside the housing assembly, and a quick-release assembly is installed outside the protective assembly. This modular and replaceable battery compartment for an electric vehicle chassis adopts a quick-disassembly and replacement design, allowing for the direct removal of the faulty battery pack and replacement with a spare battery pack. Furthermore, the modular design reduces maintenance costs and difficulty when the battery compartment malfunctions.

Description

Technical Field

[0001] This invention relates to the field of battery compartment technology, specifically to a modular and replaceable battery compartment for an electric vehicle chassis. Background Technology

[0002] The battery compartment of an electric vehicle chassis is a dedicated structural space integrated into the vehicle chassis to house and protect the power battery pack. It is the core carrier connecting the battery and the whole vehicle, and is directly related to battery safety, vehicle space utilization and driving stability. The composition of the battery compartment of an electric vehicle chassis is designed around four core requirements: protection, fixation, integration and thermal management. Existing electric vehicle chassis battery compartments are usually composed of an outer shell, a support and fixing structure, an electrical structure and auxiliary safety components.

[0003] However, the existing electric vehicle chassis battery compartment is usually fixedly welded to the chassis, making disassembly difficult. To disassemble it, the weld seam must be damaged, usually by cutting or other methods. This is not only difficult to operate, but also easy to damage the battery compartment and surrounding components. Furthermore, when the battery or other components in the battery compartment malfunction and need to be repaired or replaced, the welded fixing makes it difficult to disassemble, and it may be necessary to replace the entire battery compartment or even the chassis structure connected to it, resulting in a significant increase in maintenance costs.

[0004] Therefore, there is a need to provide a modular and replaceable battery compartment for electric vehicle chassis. Summary of the Invention

[0005] The purpose of this invention is to provide a modular and replaceable battery compartment for electric vehicle chassis, in order to solve the problems mentioned in the background art. Existing electric vehicle chassis battery compartments are usually fixedly welded to the chassis, making disassembly difficult. If disassembly is required, the weld seam must be damaged, usually by cutting or other methods. This is not only difficult to operate, but also easy to damage the battery compartment and surrounding components. Furthermore, when the battery or other components in the battery compartment malfunction and need to be repaired or replaced, due to the difficulty of disassembly because they are fixed by welding, it may be necessary to replace the entire battery compartment or even the chassis structure connected to it, resulting in a significant increase in maintenance costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modular and replaceable electric vehicle chassis battery compartment, comprising a vehicle chassis, four limiting blocks installed in the middle of the bottom surface of the vehicle chassis, a housing assembly slidably installed on the inner side between the four limiting blocks, an installation groove provided on one side of the connection between the four limiting blocks and the vehicle chassis, an output assembly installed inside each of the four installation grooves, a clamping assembly installed on the output assembly, a transmission assembly rotatably installed inside the housing assembly, a lifting assembly installed outside the transmission assembly, a battery compartment assembly slidably installed on the lifting assembly, a protective assembly covering the outer side of the housing assembly, and a quick-release assembly installed outside the protective assembly.

[0007] Preferably, the housing assembly includes a top shell, and connecting blocks are fixedly installed at the four corners of the outer side of the top shell. Contact sensors are fixedly installed at the bottom of the four connecting blocks, and the four connecting blocks are respectively connected to the inner side of the four limiting blocks.

[0008] Preferably, the output component includes a fixing plate, which is fixedly installed outside the mounting groove. A hydraulic rod is installed on the top of the fixing plate and installed inside the mounting groove. The output end of the hydraulic rod passes through the fixing plate.

[0009] Preferably, the clamping assembly includes a second mounting block, which is fixedly mounted on one end of the bottom of the fixed plate. A second connecting rod is rotatably connected to one end of the second mounting block, and a clamping block is rotatably connected to one end of the second connecting rod. A first connecting rod is rotatably connected to one end of the clamping block, and a third connecting rod is rotatably connected to the middle of the second connecting rod. A fixing block is rotatably mounted at one end between the third connecting rod and the first connecting rod. The top of the fixing block is fixedly mounted on the output end of the hydraulic rod. This avoids secondary damage to the chassis and battery compartment housing that may be caused during welding and disassembly, and reduces additional costs during maintenance.

[0010] Preferably, the transmission assembly includes a double-ended worm gear, which is rotatably mounted inside the top shell. A knob is fixedly installed at one end of the double-ended worm gear through one side of the top shell, and worm wheels are meshed with the outer sides of both ends of the double-ended worm gear.

[0011] Preferably, the lifting assembly includes two lead screws, which are respectively fixedly installed at the bottom of two worm gears. One end of each lead screw is rotatably connected to a mounting plate. The two mounting plates are respectively fixedly installed on the inner walls of both sides of the top shell. Lifting rods are drivenly connected to the outer sides of each lead screw. A base plate is fixedly installed at one end between the two lifting rods. Guide rails are fixedly installed at both ends of the top of the base plate.

[0012] Preferably, the battery compartment assembly includes a compartment body, with sliding blocks fixedly installed at both ends of both sides of the compartment body, a handle fixedly installed on the front of the compartment body, and two sliding blocks on the same side slidably installed on two guide rails respectively. The interior of the compartment body is equipped with multiple partitions, and multiple battery units are installed between the compartment body and the multiple partitions.

[0013] Preferably, the protective component includes a waterproof shell and two hooks. The two hooks are symmetrically fixedly installed on the vehicle chassis. A first connecting piece is fixedly installed on both sides of the waterproof shell. The two first connecting pieces are respectively sleeved on the outside of the two hooks. Water ingress may cause short circuits or thermal runaway of the battery cells, leading to fire or explosion. The external waterproof shell can form a "double waterproof barrier" on the basis of the original protection of the battery compartment.

[0014] Preferably, the quick-release assembly includes two bases, both of which are fixedly mounted on the vehicle chassis. A first mounting block is fixedly mounted on the bottom of each base. A handle is rotatably mounted on one end of the first mounting block. A housing is rotatably mounted on the middle of the handle. Through slots are provided on both sides of one end of the housing.

[0015] Preferably, a sliding plate is installed inside the outer shell, and the two ends of the sliding plate are slidably connected to the inside of two through slots. A sliding rod is fixedly installed on one side of the sliding plate, and a spring is sleeved on the outer side of one end of the sliding rod. A hanging ring is fixedly connected to the other end of the sliding rod that passes through the outer shell. The two limiting blocks are respectively engaged with two hooks. When it is necessary to inspect the inside of the battery compartment or maintain the battery pack, the waterproof shell can be disassembled in a short time without the need for complicated tools.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] By employing a quick-disassembly and replacement design through the clamping assembly, transmission assembly, and lifting assembly, when the battery pack malfunctions, there is no need to disassemble the chassis or damage the welded structure. The faulty battery pack can be directly removed as a whole and replaced with a spare battery pack, reducing the repair time from several hours to tens of minutes and reducing the vehicle repair waiting period.

[0018] Furthermore, the modular design reduces the cost and difficulty of repair when the battery compartment malfunctions. When one component is damaged, the specific module can be quickly located, avoiding the predicament of traditional integrated structures where a single component affects the entire module, thus reducing repair time and waste of parts. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the battery compartment of the electric vehicle chassis according to the present invention;

[0020] Figure 2This is a schematic diagram of the internal structure of the waterproof shell of the battery compartment of the electric vehicle chassis according to the present invention.

[0021] Figure 3 The battery compartment of the electric vehicle chassis of the present invention Figure 2 Enlarged view of a portion of region A in the middle;

[0022] Figure 4 This is a schematic diagram of the clamping assembly of the battery compartment in the electric vehicle chassis of the present invention;

[0023] Figure 5 This is a schematic diagram showing the location of the housing components of the battery compartment in the electric vehicle chassis according to the present invention;

[0024] Figure 6 This is a schematic diagram of the battery compartment assembly of the electric vehicle chassis battery compartment of the present invention;

[0025] Figure 7 This is a schematic diagram of the lifting assembly of the battery compartment of the electric vehicle chassis according to the present invention;

[0026] Figure 8 This is a schematic diagram showing the location of the output components in the battery compartment of the electric vehicle chassis according to the present invention.

[0027] In the diagram: 1. Vehicle chassis; 2. Waterproof shell; 3. First connecting piece; 4. Hook; 5. Base; 6. First mounting block; 7. Handle; 8. Outer shell; 9. Through groove; 10. Sliding piece; 11. Sliding rod; 12. Spring; 13. Hanging ring; 14. Mounting groove; 15. Fixing plate; 16. Hydraulic rod; 17. Second mounting block; 18. Fixing block; 19. First connecting rod; 20. Second connecting rod; 21. Third connecting rod; 22. Clamping block; 23. Limiting block; 24. Top shell; 25. Connecting block; 26. Contact sensor; 27. Knob; 28. Double-ended worm gear; 29. ​​Worm wheel; 30. Lead screw; 31. Mounting plate; 32. Lifting rod; 33. Base plate; 34. Guide rail; 35. Compartment; 36. Handle; 37. Sliding block; 38. Partition; 39. Battery unit. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] Please see Figure 1-8This invention provides a modular and replaceable battery compartment for an electric vehicle chassis, including a vehicle chassis 1. Four limiting blocks 23 are installed in the middle of the bottom surface of the vehicle chassis 1. A housing assembly is slidably installed on the inner side between the four limiting blocks 23. A mounting groove 14 is provided on one side of the connection between the four limiting blocks 23 and the vehicle chassis 1. An output assembly is installed inside each of the four mounting grooves 14. A clamping assembly is installed on the output assembly. A transmission assembly is rotatably installed inside the housing assembly. A lifting assembly is installed outside the transmission assembly. A battery compartment assembly is slidably installed on the lifting assembly. A protective assembly is provided on the outside of the housing assembly. A quick-release assembly is installed on the outside of the protective assembly.

[0030] Furthermore, the housing assembly includes a top shell 24, with connecting blocks 25 fixedly installed at each of the four corners of the top shell 24. Contact sensors 26 are fixedly installed at the bottom of each of the four connecting blocks 25. The four connecting blocks 25 are respectively connected to the inner sides of four limiting blocks 23. The output assembly includes a fixing plate 15, which is fixedly installed outside the mounting groove 14. A hydraulic rod 16 is installed on the top of the fixing plate 15 and is installed inside the mounting groove 14. The output end of the hydraulic rod 16 passes through the fixing plate 15. The clamping assembly includes a second mounting block 17, which is fixedly installed at one end of the bottom of the fixing plate 15. A second connecting rod 20 is rotatably connected to one end of the second mounting block 17. A clamping block 22 is rotatably connected to one end of the second connecting rod 20. A first connecting rod 19 is rotatably connected to one end of the clamping block 22. A third connecting rod 21 is rotatably connected to the middle of the second connecting rod 20. A fixing block 18 is rotatably mounted at one end between rod 21 and the first connecting rod 19. The top of the fixing block 18 is fixedly mounted on the output end of the hydraulic rod 16. The four hydraulic rods 16 are electrically connected together and can be started and operated synchronously. When the hydraulic rod 16 is started, its output end extends and drives the fixing block 18 to descend. When the fixing block 18 descends, it drives the first connecting rod 19 and the third connecting rod 21 at both ends to descend and flip at the same time. When the third connecting rod 21 flips, it drives the second connecting rod 20 to flip along the second mounting block 17. When the first connecting rod 19 flips, it drives the clamping block 22 to flip along one end of the first connecting rod 19, pressing the connecting block 25 to fix the top shell 24. When disassembling, the hydraulic rod 16 is controlled to retract, and the fixing block 18 is pulled up, so that the clamping block 22 flips and retracts, no longer pressing the connecting block 25, thereby releasing the fixation of the top shell 24 and allowing disassembly.

[0031] Furthermore, the transmission assembly includes a double-headed worm gear 28, which is rotatably mounted inside the top shell 24. One end of the double-headed worm gear 28 passes through one side of the top shell 24 and is fixedly mounted with a knob 27. Both outer sides of the double-headed worm gear 28 are meshed with worm wheels 29. The lifting assembly includes two lead screws 30, which are respectively fixedly mounted at the bottom of the two worm wheels 29. One end of the two lead screws 30 is rotatably connected to a mounting plate 31. The two mounting plates 31 are respectively fixedly mounted on the inner walls of both sides of the top shell 24. The outer sides of the two lead screws 30 are drivenly connected to lifting rods 32. A base plate 33 is fixedly mounted at one end between the two lifting rods 32. Guide rails 34 are fixedly mounted at both ends of the top of the base plate 33. The battery compartment assembly includes a compartment body 35. Sliding blocks 37 are fixedly mounted at both ends of both sides of the compartment body 35. A handle 36 is fixedly mounted on the front of the compartment body 35. Two sliding blocks 37 on the same side are also fixedly mounted on the front of the compartment body 35. The moving block 37 is slidably mounted on the two guide rails 34 respectively. The interior of the compartment 35 is equipped with multiple partitions 38. Multiple battery units 39 are installed between the compartment 35 and the multiple partitions 38. Rotating the knob 27 can drive the double-headed worm gear 28 to rotate inside the top shell 24. When the double-headed worm gear 28 rotates, it meshes synchronously with the two worm wheels 29 through its two ends, causing the two worm wheels 29 to rotate synchronously. When the worm wheels 29 rotate, they drive the bottom lead screw 30 to rotate in the middle of the mounting plate 31. When the two lead screws 30 rotate, they drive the outer lifting rod 32 to descend, thereby causing the bottom plate 33, which is fixedly installed at the bottom of the two lifting rods 32, to descend, thus lowering the compartment 35 out of the interior of the top shell 24 for easy inspection. After maintenance is completed, reversing the knob 27 will raise the bottom plate 33, causing the compartment 35 to retract into the interior of the top shell 24 for protection.

[0032] Furthermore, the protective assembly includes a waterproof shell 2 and two hooks 4, which are symmetrically fixedly installed on the vehicle chassis 1. First connecting pieces 3 are fixedly installed on both sides of the waterproof shell 2, and the two first connecting pieces 3 are respectively sleeved on the outside of the two hooks 4. The quick-release assembly includes two bases 5, both of which are fixedly installed on the vehicle chassis 1. A first mounting block 6 is fixedly installed on the bottom of the base 5. A handle 7 is rotatably installed at one end of the first mounting block 6, and a housing 8 is rotatably installed in the middle of the handle 7. Through slots 9 are provided on both sides of one end of the housing 8, and a sliding piece 10 is installed inside the housing 8. The two ends are slidably connected inside the two through slots 9. A sliding rod 11 is fixedly installed on one side of the sliding piece 10. A spring 12 is sleeved on the outer side of one end of the sliding rod 11. A hanging ring 13 is fixedly connected to the other end of the sliding rod 11 that passes through the outer shell 8. Two limiting blocks 23 are respectively engaged with two hooks 4. The first connecting pieces 3 on both sides of the waterproof shell 2 are sleeved on the outside of the two hooks 4. Then, the handle 7 is flipped to drive the hanging ring 13 on the outer shell 8 to be sleeved on the hooks 4. A gasket is installed between the hanging ring 13 and the first connecting piece 3. Then, the handle 7 is pressed upward to make the hooks 4 squeeze the gasket and fix the waterproof shell 2.

[0033] In this embodiment, when the battery compartment installed at the bottom of the vehicle chassis 1 is involved in an accident or damaged, the vehicle is first lifted up, and then the condition of the battery compartment is checked. If the waterproof shell 2 is damaged, the two handles 7 are pulled down to release the two hanging rings 13 from the pressure on the gasket, and the hanging rings 13 are removed from the hooks 4 to unlock the waterproof shell 2. Then it is removed to check the condition of the internal battery compartment. Rotating the knob 27 forward drives the base plate 33 to descend, thereby lowering the compartment 35 out of the top shell 24 for inspection of the battery unit 39 inside the compartment 35. If there is no problem inside, rotating the knob 27 in the reverse direction drives the base plate 33 to rise and retract the compartment 35. If damage occurs, a corresponding limiting hole is provided between the guide rail 34 and the sliding block 37. After installation, a limiting pin is set in the limiting hole. At this time, disassembly is performed. Remove the limit pins, and the battery compartment 35 can be slid out and disassembled via the sliding block 37 along the guide rail 34 using the handle 36 for replacement. If the entire battery compartment is damaged, activate the hydraulic rod 16 to retract and pull up the fixing block 18, causing the clamping block 22 to flip and retract, no longer clamping the connecting block 25, because the clamping block 22 is released from the contact sensor 26 when clamping. During disassembly, the clamping block 22 will leave the contact sensor 26, at which point the contact sensor 26 will provide feedback that the vehicle battery has been removed. After replacing the new battery compartment, activate the hydraulic rod 16 to descend, causing the four clamping blocks 22 to re-contact and fix the four connecting blocks 25, completing the installation and fixation of the top cover 24. At this time, the four clamping blocks 22 will approach the contact sensor 26 again, and at the same time, the vehicle battery compartment will be normal. Then, the waterproof shell 2 can be reinstalled and fixed to complete the repair.

[0034] All components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. All electrical components mentioned above should be electrically connected in accordance with the working principle described above and the sequence of operation between each electrical component. The detailed connection methods are well-known technologies in the field.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular and replaceable battery compartment for an electric vehicle chassis, comprising a vehicle chassis (1), characterized in that: Four limiting blocks (23) are installed in the middle of the bottom surface of the vehicle chassis (1). A housing assembly is slidably installed on the inner side between the four limiting blocks (23). An installation groove (14) is opened on one side of the connection between the four limiting blocks (23) and the vehicle chassis (1). An output assembly is installed inside the four installation grooves (14). A pressing assembly is installed on the output assembly. A transmission assembly is rotatably installed inside the housing assembly. A lifting assembly is installed outside the transmission assembly. A battery compartment assembly is slidably installed on the lifting assembly. A protective assembly is provided on the outside of the housing assembly. The protective component is equipped with a quick-release assembly on its exterior. The housing assembly includes a top shell (24). Connecting blocks (25) are fixedly installed on the four corners of the top shell (24). Contact sensors (26) are fixedly installed on the bottom of the four connecting blocks (25). The four connecting blocks (25) are respectively connected to the inner side of the four limiting blocks (23). The clamping assembly includes a second mounting block (17), which is fixedly mounted on one end of the bottom of the fixed plate (15). A second connecting rod (20) is rotatably connected to one end of the second mounting block (17). A clamping block (22) is rotatably connected to one end of the second connecting rod (20). A first connecting rod (19) is rotatably connected to one end of the clamping block (22). A third connecting rod (21) is rotatably connected to the middle of the second connecting rod (20). A fixing block (18) is rotatably mounted at one end between the third connecting rod (21) and the first connecting rod (19). The top of the fixing block (18) is fixedly mounted on the output end of the hydraulic rod (16). The transmission assembly includes a double-headed worm (28), which is rotatably mounted inside the top shell (24). A knob (27) is fixedly mounted on one side of the top shell (24) through one end of the double-headed worm (28), and worm wheels (29) are meshed on the outer sides of both ends of the double-headed worm (28). The lifting assembly includes two lead screws (30), which are fixedly installed at the bottom of two worm gears (29). One end of each lead screw (30) is rotatably connected to a mounting plate (31), and the two mounting plates (31) are fixedly installed on the inner walls of both sides of the top shell (24). Lifting rods (32) are drivenly connected to the outer sides of each lead screw (30). A base plate (33) is fixedly installed at one end between the two lifting rods (32), and guide rails (34) are fixedly installed at both ends of the top of the base plate (33).

2. The modular and replaceable battery compartment for an electric vehicle chassis according to claim 1, characterized in that: The output component includes a fixing plate (15) which is fixedly installed on the outside of the mounting groove (14). A hydraulic rod (16) is installed on the top of the fixing plate (15) and is installed inside the mounting groove (14). The output end of the hydraulic rod (16) passes through the fixing plate (15).

3. The modular and replaceable battery compartment for an electric vehicle chassis according to claim 1, characterized in that: The battery compartment assembly includes a compartment body (35), with sliding blocks (37) fixedly installed at both ends of both sides of the compartment body (35), a handle (36) fixedly installed on the front of the compartment body (35), and two sliding blocks (37) on the same side slidably installed on two guide rails (34). Multiple partitions (38) are installed inside the compartment body (35), and multiple battery units (39) are installed between the compartment body (35) and the multiple partitions (38).

4. The modular and replaceable battery compartment for an electric vehicle chassis according to claim 1, characterized in that: The protective component includes a waterproof shell (2) and two hooks (4). The two hooks (4) are symmetrically fixed on the vehicle chassis (1). A first connecting piece (3) is fixedly installed on both sides of the waterproof shell (2). The two first connecting pieces (3) are respectively sleeved on the outside of the two hooks (4).

5. The modular and replaceable battery compartment for an electric vehicle chassis according to claim 4, characterized in that: The quick-release assembly includes two bases (5), both of which are fixedly installed on the vehicle chassis (1). A first mounting block (6) is fixedly installed at the bottom of the base (5). A handle (7) is rotatably installed at one end of the first mounting block (6). A housing (8) is rotatably installed in the middle of the handle (7). Through slots (9) are provided on both sides of one end of the housing (8).

6. The modular and replaceable battery compartment for an electric vehicle chassis according to claim 5, characterized in that: The inner side of the outer shell (8) is equipped with a sliding piece (10). The two ends of the sliding piece (10) are slidably connected to the inside of two through slots (9). A sliding rod (11) is fixedly installed on one side of the sliding piece (10). A spring (12) is sleeved on the outer side of one end of the sliding rod (11). A hanging ring (13) is fixedly connected to the other end of the sliding rod (11) that passes through the outer shell (8). The two limiting blocks (23) are respectively engaged with the two hooks (4).

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