New energy automobile battery case

Abstract

The utility model relates to the technical field of new energy automobile batteries, in particular to a new energy automobile battery shell which comprises a base plate, a shell is fixedly arranged at the top of the base plate, a power clamping box is fixedly arranged at the bottom of one side of the shell, and a limiting supporting block is fixedly arranged in the middle of one side of the inner wall of the power clamping box. One end of the top of the limiting supporting block is in sliding contact with a movable clamping rod, and a supporting plate is fixedly arranged at the bottom of the movable clamping rod. According to the battery case, the bottom partition plate, the top partition plate and other components are arranged, and the bottom partition plate and the top partition plate are arranged in a staggered manner, so that a heat dissipation channel at the bottom has the effects of enhancing heat dissipation uniformity and avoiding local overheating, and a cooling medium is forced to circuitously flow in the battery case and cover more battery cell surfaces by changing the direction of airflow or liquid flow, so that heat dissipation blind areas are reduced; local turbulent flow is formed in the channel through the partition structures, so that the cooling medium is changed from laminar flow to turbulent flow, and according to the fluid mechanics principle, the turbulent flow can enhance heat conduction of the boundary layer.

Description

Technical Field

[0001] This application relates to the technical field of new energy vehicle batteries, and in particular to a new energy vehicle battery casing. Background Technology

[0002] New energy vehicle battery technology is mature, low-cost, and uses readily available raw materials. It has good low-temperature performance, good high-rate discharge performance, and relatively high safety. It is not easy for dangerous situations such as explosions to occur during discharge. When using batteries, in order to prevent physical damage such as collisions, squeezing, and punctures from the outside world, and to avoid safety accidents such as internal short circuits and fires, a battery casing is usually used. As a load-bearing component of the battery pack, it provides a mounting base for battery modules, cooling systems, electrical connections and other components, ensuring that they maintain a stable positional relationship during vehicle operation, while also enhancing the overall structural rigidity of the vehicle.

[0003] A search revealed Chinese Patent Publication No. CN 222507863 U, which discloses a new energy vehicle battery casing, comprising: a placement component; a new energy vehicle battery placed inside the placement component; a limiting component located above the new energy vehicle battery; and a driving component that passes through the limiting component and works in conjunction with it. The placement component includes a battery casing with a placement cavity inside. This invention utilizes a pressing end plate, which causes the end plate to move a moving plate and a connecting toothed plate. Simultaneously, a return spring contracts and shortens. Because the connecting toothed plate and a connecting gear are meshed, the movement of the connecting toothed plate causes the connecting gear to rotate, thereby causing the limiting plate to rotate. At this point, the limiting plate no longer limits the new energy vehicle battery, allowing the battery to be removed from the placement cavity for easy replacement or cleaning.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following defects: When using existing new energy battery casings, external dust can easily enter the interior at the heat dissipation points, causing blockage of the heat dissipation channels. As a result, the battery heat cannot be dissipated in time, causing local temperature rise. Metal particles (such as iron and copper) in the dust may adhere to the positive and negative terminals of the battery module, wiring harness interfaces, or circuit boards, causing local short circuits, leading to abnormal battery discharge or burnt-out components. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, this application provides a battery casing for new energy vehicles.

[0006] This application provides a new energy vehicle battery casing, which adopts the following technical solution: it includes a base plate, a casing is fixedly installed on the top of the base plate, a power latch box is fixedly installed on the bottom of one side of the casing, a limit support block is fixedly installed in the middle of one side of the inner wall of the power latch box, a movable latch rod is slidably contacted at one end of the top of the limit support block, a support plate is fixedly installed at the bottom of the movable latch rod, a column is rotatably installed on the outside of the rotating rod in the middle of the support plate, a slide plate is fixedly installed at the bottom of the column, an electric telescopic rod is fixedly installed at one end of the bottom of the slide plate, a support plate is fixedly installed at the bottom of the electric telescopic rod, and the bottom of the support plate is fixedly installed at the bottom of the inner wall of the power latch box.

[0007] A snap-fit ​​rod is rotatably mounted on the middle position of one end of the top of the housing via a bearing. A threaded sleeve is threaded onto the bottom of the snap-fit ​​rod, and a movable block is fixedly mounted on the bottom of the threaded sleeve. The inner side of the movable block is slidably connected to the inner wall of the power snap-fit ​​box.

[0008] Optionally, a heat dissipation groove is fixedly provided in the middle of the base plate, and a heat dissipation hole is provided at the top of the heat dissipation groove and it is connected to the bottom of the upper shell. Fixing holes are provided at the edge of the base plate.

[0009] Optionally, a bottom partition and a top partition are fixedly installed on the inner wall of the shell near the bottom. The bottom partition and the top partition are staggered on both sides. A support pad is installed above the bottom partition and the top partition. A gap is provided in the middle of the support pad. Two identical extrusion plates are slidably installed on both sides of the bottom of the inner wall of the shell. A limit frame is provided on the outer side of the extrusion plate. An elastic plate is slidably installed on the inner wall of the limit frame. A fixing strip is fixedly sleeved on the outer side of the elastic plate. The outer side of the fixing strip is fixedly installed on one side of the inner wall of the shell.

[0010] Optionally, the middle part of the support plate is rotatably mounted on one side of the inner wall of the power snap-fit ​​box via a rotating rod, and the bottom of the support plate is provided with an extended snap-fit ​​corner, which is located below the snap-fit ​​groove on one side of the limiting support block.

[0011] Optionally, uprights are slidably inserted into the middle of both ends of the skateboard, with the bottom of the uprights fixed to the bottom of the inner wall of the power card box, and uprights are fixedly installed on the upper surface of both ends of the skateboard.

[0012] Optionally, a limiting slide is provided on one side of the movable block and is slidably connected to the slide groove on the inner wall of the power snap-fit ​​box. The bottom of the movable block slides in contact with a limiting support plate. One side of the limiting support plate is fixedly set on one side of the inner wall of the power snap-fit ​​box. The movable block is set in an inverted "T" shape, and movable latches are snapped on both sides of the movable block.

[0013] Optionally, two identical telescopic slide rods are fixedly installed on both sides of the top of the power card box. An inner rod is slidably inserted into the inner wall of the telescopic slide rod, and a top cover plate is fixedly installed on the top of the inner rod. The bottom of the top cover plate is in sliding contact with the bottom of the housing.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model, by setting components such as bottom partitions and top partitions, and by staggering the bottom partitions and top partitions, enhances the heat dissipation uniformity of the heat dissipation channel at the bottom, avoids local overheating, and forces the cooling medium to flow in a meandering manner within the battery case by changing the direction of airflow or liquid flow, covering more of the cell surface and reducing heat dissipation blind spots. The partition structure forms local turbulence within the channel, causing the cooling medium to change from laminar flow to turbulent flow. According to the principles of fluid mechanics, turbulence can enhance boundary layer heat conduction.

[0016] 2. This utility model uses two sets of extrusion plates and elastic plates to compress and fix the new energy source on both sides, preventing the battery from becoming loose during use. At the same time, the non-through-channel partition structure can act as a physical barrier to prevent large external particles (such as sand and leaves) from directly penetrating the heat dissipation holes, reducing the risk of wear on internal components of the battery casing. The non-through-channel disperses the airflow speed, reducing noise caused by high-speed airflow impact and improving driving comfort. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the shell in an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the power card junction box in the embodiments of this application;

[0020] Figure 4 This is a three-dimensional structural diagram of the bottom partition and the top partition in the embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the front structure in an embodiment of this application.

[0022] Reference numerals: 1. Base plate; 2. Housing; 3. Top cover plate; 4. Telescopic slide rod; 5. Power locking box; 6. Locking rod; 7. Bottom partition; 8. Top partition; 9. Support pad; 10. Limiting support block; 11. Moving locking rod; 12. Moving block; 13. Support plate; 14. Limiting support plate; 15. Slide plate; 16. Electric telescopic rod; 17. Upright pole; 18. Column; 19. Elastic plate; 20. Limiting frame; 21. Extrusion plate; 22. Fixing strip; 23. Threaded sleeve. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] This application discloses a battery casing for new energy vehicles. For example... Figure 1 As shown, the battery casing includes a base plate 1. A heat dissipation groove is fixedly installed in the middle of the base plate 1. A heat dissipation hole is provided at the top of the heat dissipation groove and communicates with the bottom of the upper housing 2. Fixing holes are provided at the edge of the base plate 1. The heat dissipation groove and heat dissipation hole in the middle of the base plate 1 constitute the basic heat dissipation channel of the battery casing. The heat dissipation groove has a certain volume and shape, which can accommodate heat dissipation media such as air or coolant. When the battery generates heat during operation, the heat is conducted to the base plate 1 through the housing 2 and then carried away by the medium in the heat dissipation groove. The heat dissipation hole connects the heat dissipation groove to the inside of the housing 2, so that the heat inside the housing 2 can be smoothly transferred to the heat dissipation groove, realizing rapid heat dissipation, effectively reducing the battery temperature, ensuring that the battery operates within a suitable temperature range, and improving the battery performance and service life. The fixing holes on the edge of the base plate 1 are used to fix the battery casing to a specific position in the new energy vehicle. By passing bolts or other connectors through the fixing holes, the battery casing is firmly installed on the vehicle, ensuring that the battery casing will not shake or shift during vehicle operation, thus ensuring the safety and stability of the battery.

[0025] Please see Figure 2 A housing 2 is fixedly mounted on the top of the base plate 1. A bottom partition 7 and a top partition 8 are fixedly mounted on the inner wall of the housing 2 near the bottom. The bottom partition 7 and the top partition 8 are staggered on both sides. A support pad 9 is mounted above the bottom partition 7 and the top partition 8, with a gap in the middle of the support pad 9. Two identical extrusion plates 21 are slidably mounted on both sides of the bottom of the inner wall of the housing 2. A limit frame 20 is mounted on the outer side of the extrusion plate 21. An elastic plate 19 is slidably mounted on the inner wall of the limit frame 20. A fixing strip 22 is fixedly sleeved on the outer side of the elastic plate 19. The outer side is fixed to one side of the inner wall of the housing 2. The bottom partition 7 and the top partition 8 are staggered, forming a tortuous heat dissipation channel inside the housing 2. This changes the flow path of air or coolant, prolongs the contact time between the heat dissipation medium and the battery, enhances the heat dissipation effect, and effectively avoids local overheating of the battery. The support pad 9 is used to support the battery assembly. Its gap design does not affect the installation and fixation of the battery, and provides flow space for the heat dissipation medium, further optimizing the heat dissipation performance. The extrusion plate 21, the limiting frame 20, the elastic plate 19, and the fixing strip 22 constitute the elastic fixing structure of the battery. When the battery is installed in the housing 2, the extrusion plate 21, under the elastic force of the elastic plate 19, extrudes and fixes the battery, ensuring that the battery will not shake inside the housing 2, ensuring the stability and reliability of the entire elastic fixing structure. During vehicle operation, this structure can effectively buffer vibration and impact, protecting the battery from damage.

[0026] Please see Figure 3A power snap-fit ​​box 5 is fixedly installed at the bottom of one side of the housing 2. A limit support block 10 is fixedly installed in the middle of one side of the inner wall of the power snap-fit ​​box 5. A movable snap-fit ​​rod 11 is slidably contacted at the top end of the limit support block 10. A support plate 13 is fixedly installed at the bottom of the movable snap-fit ​​rod 11. The middle of the support plate 13 is rotatably installed on one side of the inner wall of the power snap-fit ​​box 5 through a rotating rod. An extended snap-fit ​​angle is provided at the bottom of the support plate 13. The snap-fit ​​angle at the bottom of the support plate 13 is located below the snap-fit ​​groove on one side of the limit support block 10. The rotating rod in the middle of the support plate 13 allows it to rotate flexibly in the power snap-fit ​​box 5, providing a rotation basis for the snap-fit ​​action. The extended snap-fit ​​angle at the bottom is the key part to realize the snap-fit ​​function. When the electric telescopic rod 16 drives the slide plate 15 to move and drives the support plate 13 to move, the snap-fit ​​angle can cooperate with the snap-fit ​​groove on one side of the limit support block 10. When the snap-fit ​​angle is snapped into the snap-fit ​​groove, the top cover plate 3 and the housing 2 below can be connected as a whole, which facilitates the disassembly and assembly of the battery case.

[0027] Please see Figure 3 A column 18 is rotatably mounted on the outer side of the rotating rod in the middle of the support plate 13. A slide plate 15 is fixedly mounted on the bottom of the column 18. A column 17 is slidably inserted into the middle of both ends of the slide plate 15. The bottom of the column 17 is fixedly mounted on the bottom of the inner wall of the power snap box 5. A column 18 is fixedly mounted on the upper surface of both ends of the slide plate 15. The column 17 provides a stable sliding guide for the slide plate 15, ensuring that the slide plate 15 can slide smoothly along a fixed direction under the drive of the electric telescopic rod 16, avoiding deviation or shaking, and ensuring the accuracy and stability of the operation of each component in the power snap box 5. An electric telescopic rod 16 is fixedly mounted on one end of the bottom of the slide plate 15. A support plate is fixedly mounted on the bottom of the electric telescopic rod 16. The bottom of the support plate is fixedly mounted on the bottom of the inner wall of the power snap box 5.

[0028] Please see Figure 2 and Figure 3A locking rod 6 is rotatably mounted on the middle of one end of the top of the housing 2 via a bearing. A threaded sleeve 23 is threaded onto the bottom of the locking rod 6. A movable block 12 is fixedly mounted on the bottom of the threaded sleeve 23. A limiting slide is provided on one side of the movable block 12 and slidably connected to a groove on the inner wall of the power locking box 5. The bottom of the movable block 12 slidably contacts a limiting support plate 14. One side of the limiting support plate 14 is fixedly mounted on one side of the inner wall of the power locking box 5. The movable block 12 is shaped like an inverted "T". Movable locking rods 11 are locked onto both sides of the movable block 12. The inverted "T" shaped movable block 12 achieves this by engaging with the two sides... Two movable levers 11 are engaged to lock and fix the movable block 12. The limiting plate 14 supports and limits the movable block 12. The inner side of the movable block 12 is slidably connected to the inner wall of the power locking box 5. Two sets of identical telescopic slide rods 4 are fixedly installed on both sides of the top of the power locking box 5. The inner wall of the telescopic slide rod 4 is slidably inserted with an inner rod. The top of the inner rod is fixedly installed with a top cover plate 3. The bottom of the top cover plate 3 is slidably in contact with the bottom of the housing 2. When the top cover plate 3 moves, it drives the inner rod of the telescopic slide rod 4 to slide inside it, ensuring the stability of the top cover plate 3 when it moves.

[0029] The implementation principle of a new energy vehicle battery casing according to an embodiment of this application is as follows: When it is necessary to install the battery, the battery is placed in the casing 2. The bottom partition 7, the top partition 8, and the support pad 9 work together to initially position the battery. The gap in the middle of the support pad 9 does not affect the battery installation and also provides space for heat dissipation. Under the action of the elastic plate 19, the compression plate 21 is driven to compress and fix the battery, so that the battery is firmly fixed in the casing 2. When the vehicle vibrates or is impacted during driving, the elastic plate 19 can absorb and buffer the external force, reduce the impact of vibration on the battery, and prevent the battery from shaking in the casing 2. The limiting frame 20 limits the compression plate 21, and the fixing strip 22 fixes the elastic plate 19 to the inner wall of the housing 2, ensuring that the entire elastic fixing structure is stable and reliable, and protecting the battery from damage in all directions. When it is necessary to remove the top cover of the battery housing, the electric telescopic rod 16 is activated. The support plate 13 above moves around the rotating rod in the middle through the column 18. At the same time, the moving rod 11 above swings upward at the end near the moving block 12, so that the moving rod 11 is disengaged from the moving block 12. This makes it easy to adjust the distance between the locking rod 6 and the power locking box 5, and prevents the locking rod 6 from not rotating due to the short distance. This makes it easy to remove the top cover 3.

[0030] The heat generated by the battery during operation is conducted to the base plate 1 through the housing 2. The heat dissipation groove and heat dissipation hole in the middle of the base plate 1 form a heat dissipation channel, and the heat is transferred to the heat dissipation groove. Since the bottom partition 7 and the top partition 8 are staggered on the inner wall of the housing 2, a tortuous heat dissipation path is formed inside the housing 2. When air cooling is used, air enters from the heat dissipation hole, fully contacts the battery in the tortuous channel, carries away the heat, and then is discharged from other heat dissipation outlets. This tortuous channel design prolongs the contact time between the heat dissipation medium and the battery, enhances the heat dissipation effect, and effectively avoids local overheating of the battery.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A battery casing for a new energy vehicle, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly provided with a housing (2), and a power snap box (5) is fixedly provided at the bottom of one side of the housing (2). A limit support block (10) is fixedly provided in the middle of one side of the inner wall of the power snap box (5). A movable snap rod (11) is slidably contacted at one end of the top of the limit support block (10). A support plate (13) is fixedly provided at the bottom of the movable snap rod (11). A column (18) is rotatably provided on the outside of the rotating rod in the middle of the support plate (13). A slide plate (15) is fixedly provided at the bottom of the column (18). An electric telescopic rod (16) is fixedly provided at one end of the bottom of the slide plate (15). A tray is fixedly provided at the bottom of the electric telescopic rod (16). The bottom of the tray is fixedly provided at the bottom of the inner wall of the power snap box (5). A snap-fit ​​rod (6) is rotatably mounted on the middle position of one end of the top of the housing (2) via a bearing. A threaded sleeve (23) is threaded onto the bottom of the snap-fit ​​rod (6). A movable block (12) is fixedly mounted on the bottom of the threaded sleeve (23). The inner side of the movable block (12) is slidably connected to the inner wall of the power snap-fit ​​box (5).

2. The battery casing for a new energy vehicle according to claim 1, characterized in that: A heat dissipation groove is fixedly provided in the middle of the base plate (1), and a heat dissipation hole is provided at the top of the heat dissipation groove and is connected to the bottom of the shell (2) above. A fixing hole is provided at the edge of the base plate (1).

3. A new energy vehicle battery casing according to claim 1, characterized in that: The inner wall of the shell (2) is fixedly provided with a bottom partition (7) and a top partition near the bottom. The bottom partition (7) and the top partition (8) are staggered on both sides. A support pad (9) is provided above the bottom partition (7) and the top partition (8). A gap is provided in the middle of the support pad (9). Two identical extrusion plates (21) are slidably provided on both sides of the bottom of the inner wall of the shell (2). A limit frame (20) is provided on the outer side of the extrusion plate (21). An elastic plate (19) is slidably provided on the inner wall of the limit frame (20). A fixing strip (22) is fixedly sleeved on the outer side of the elastic plate (19). The outer side of the fixing strip (22) is fixedly provided on one side of the inner wall of the shell (2).

4. A new energy vehicle battery casing according to claim 1, characterized in that: The middle part of the support plate (13) is rotatably mounted on one side of the inner wall of the power snap box (5) via a rotating rod. The bottom of the support plate (13) is provided with an extended snap corner, which is located below the snap groove on one side of the limiting support block (10).

5. A new energy vehicle battery casing according to claim 1, characterized in that: Uprights (17) are slidably inserted into the middle of both ends of the slide plate (15). The bottom of the uprights (17) is fixedly set at the bottom of the inner wall of the power card box (5). Uprights (18) are fixedly set on the upper surface of both ends of the slide plate (15).

6. A new energy vehicle battery casing according to claim 1, characterized in that: The movable block (12) has a limiting slide bar on one side and is slidably connected to the slide groove on the inner wall of the power snap box (5). The bottom of the movable block (12) slides in contact with the limiting plate (14). One side of the limiting plate (14) is fixedly set on one side of the inner wall of the power snap box (5). The movable block (12) is set in an inverted "T" shape. Movable latches (11) are snapped on both sides of the movable block (12).

7. A new energy vehicle battery casing according to claim 1, characterized in that: Two identical telescopic slide rods (4) are fixedly installed on both sides of the top of the power card box (5). An inner rod is slidably inserted into the inner wall of the telescopic slide rod (4). A top cover plate (3) is fixedly installed on the top of the inner rod. The bottom of the top cover plate (3) is in sliding contact with the bottom of the housing (2).

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