Battery pack capable of realizing multi-working-condition adaptive safety protection

Abstract

The application discloses a battery pack capable of realizing multi-working-condition adaptive safety protection, and belongs to the technical field of battery packs.The battery pack comprises a lower box body, an upper box body, a plastic box cover, a lower protective shell, a pressure reduction assembly and a battery module.The lower protective shell is fixedly installed on one side of the lower box body, one side of the lower protective shell is movably connected with a connecting frame, and one side of the connecting frame is fixedly connected with a connecting column.The battery pack capable of realizing multi-working-condition adaptive safety protection is provided with the honeycomb groove of the pressure reduction assembly connecting plate and the honeycomb plastic pad, under the premise of guaranteeing the structural strength and the sealing property, the use of metal materials is reduced, the overall weight is reduced, the power consumption is reduced, meanwhile, the double-buffering structure composed of the telescopic rod, the elastic element, the hydraulic cylinder and the hydraulic rod is arranged, four groups of pressure reduction assemblies are arranged to enclose the cavity to wrap the battery module and the honeycomb plastic pad and are fully attached, multi-direction external force impact is buffered, the damage risk of the battery module is reduced, the use safety is improved, and the diversified working-condition requirements are met.

Description

Technical Field

[0001] This invention relates to the field of battery pack technology, and in particular to a battery pack that can achieve adaptive safety protection under multiple operating conditions. Background Technology

[0002] Power battery packs are core power source components for equipment such as new energy vehicles and construction machinery. They typically integrate battery modules, housings (including upper and lower housings, protective shells, etc.), buffer and protection structures (such as pressure reduction components, honeycomb plastic pads, etc.), connecting and fixing components (such as lifting lugs, limit posts, etc.), and related control components. They can provide continuous power output for equipment and must be adaptable to multiple operating scenarios, meeting performance requirements such as lightweight, structural stability, and impact resistance. With the rapid development of new energy vehicles, construction machinery, and other fields, power batteries, as core power sources, need to be adapted to multiple operating scenarios, and the performance requirements are becoming increasingly stringent.

[0003] Existing power battery packs have a heavy metal structure that increases energy consumption and reduces weight, limiting range and mobility. They also have poor assembly stability and are mostly unidirectional buffers. When operating under various conditions, they are susceptible to impacts from different directions and angles, and have weak adaptability to multidirectional impacts. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing power battery packs have a heavy metal structure that increases energy consumption and reduces weight, limits range and mobility, has poor assembly stability and mostly uses one-way buffering. When operating under various conditions, they are easily affected by impacts from different directions and angles, and have weak adaptability to multi-directional impacts. To this end, a battery pack that can achieve multi-condition adaptive safety protection is provided. This battery pack can adapt to multiple operating conditions and also take into account lightweight design.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] Design a battery pack that can achieve multi-condition adaptive safety protection, including a lower box, an upper box, a plastic box cover, a lower protective shell, a pressure reduction component, and a battery module;

[0007] The lower protective shell is fixedly installed on one side of the lower housing. A connecting frame is movably connected to one side of the lower protective shell. A connecting column is fixedly connected to one side of the connecting frame. A sliding groove is provided on one side of the connecting column.

[0008] The pressure-reducing assembly includes a connecting plate, one end of which is slidably connected to the inner wall of a slide groove. A honeycomb groove is formed on one side of the connecting plate, and a placement groove is formed on the inner wall of the placement groove. A moving groove is formed on the inner wall of the moving groove, and a moving column is slidably connected to the inner wall of the moving groove. A hydraulic cylinder is fixedly installed on the inner wall of the placement groove, and a hydraulic rod is slidably connected to the inner wall of the hydraulic cylinder. A slider is fixedly connected to one end of the hydraulic rod, and a trapezoidal block is fixedly connected to one section of the moving column. A sliding groove is formed on one side of the trapezoidal block.

[0009] One side of the slider is slidably connected to the inner wall of the sliding groove. Multiple sets of connecting columns and pressure-reducing components are provided. Four sets of pressure-reducing components form a cavity for placing the battery module. A honeycomb plastic pad is fixedly connected to one side of the trapezoidal block. One side of the honeycomb plastic pad is in contact with the battery module.

[0010] The above technical solution uses honeycomb grooves in the pressure-reducing component connecting plate and honeycomb plastic pads to reduce the use of metal materials, reduce overall weight, and reduce power consumption while ensuring structural strength and sealing. At the same time, it sets up a double buffer structure composed of telescopic rods and elastic elements, hydraulic cylinders and hydraulic rods. Combined with four sets of pressure-reducing components forming a cavity to wrap the battery module and fully fit the honeycomb plastic pads, it buffers the impact of external forces from multiple directions, reduces the risk of damage to the battery module, improves the safety of use, and adapts to diverse working conditions.

[0011] Furthermore, the pressure-reducing assembly is also provided with a structure on both sides connected to honeycomb plastic pads. The structure on both sides of the pressure-reducing assembly connected to honeycomb plastic pads is provided with two sets of symmetrical pressure-reducing structures. One side of the hydraulic cylinder is fixedly connected to an inlet pipe, and one end of the inlet pipe passes through a connecting plate.

[0012] The hydraulic cylinder described above allows for flexible adjustment of the hydraulic medium injection volume via the inlet pipe, enabling the adjustment of hydraulic damping according to the impact strength requirements under different working conditions, thus adapting to diverse impact protection scenarios.

[0013] Furthermore, the lower box body is fixedly installed with the upper box body, and a plastic box cover is fixedly installed on one side of the upper box body.

[0014] Furthermore, a connector is fixedly installed on one side of the lower housing, and a lifting lug is fixedly installed on one side of the lower housing. The lower housing and the upper housing are fixedly installed through the lifting lug.

[0015] Furthermore, a limiting post one is fixedly connected to one side of the lower protective shell, a supporting beam is fixedly connected to the inner wall of the upper box, a limiting post two is fixedly connected to one side of the supporting beam, and a slot is provided on one side of the connecting post.

[0016] Furthermore, one end of the first limiting post is engaged with the inner ring surface of the slot, and one end of the second limiting post is engaged with the inner ring surface of the slot.

[0017] The above technical solution achieves a stable connection between the lower protective shell, the connecting frame, and the supporting beam through the snap-fit ​​engagement of the first and second limiting posts and the connecting post slots, thus preventing loosening and displacement of the connection parts under long-term vibration conditions.

[0018] Furthermore, a partition is fixedly connected to the inner wall of the lower housing, and a cavity is formed between the partition and the lower housing for placing the control terminal of the connected control battery module.

[0019] Furthermore, a telescopic rod is fixedly connected to the inner wall of the movable groove, and an elastic element is sleeved on the side surface of the telescopic rod.

[0020] Furthermore, one end of the telescopic rod is fixedly connected to one side of the movable column, and one end of the hydraulic rod is set as an inclined plane.

[0021] Furthermore, a placement groove is provided on one side of the connecting frame, and an elastic pad is movably connected to the inner wall of the placement groove.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This battery pack, which can achieve multi-condition adaptive safety protection, features a honeycomb groove on the pressure-reducing component connecting plate and a honeycomb plastic pad. While ensuring structural strength and sealing, it reduces the use of metal materials, lowers the overall weight, and reduces power consumption. At the same time, it is equipped with a double buffer structure consisting of telescopic rods and elastic elements, hydraulic cylinders and hydraulic rods. Combined with four sets of pressure-reducing components forming a cavity to fully enclose the battery module and the honeycomb plastic pad, it buffers the impact of external forces from multiple directions, reduces the risk of damage to the battery module, improves the safety of use, and adapts to diverse operating conditions.

[0024] 2. This battery pack, which can achieve multi-condition adaptive safety protection, achieves a stable connection between the lower protective shell, the connecting frame, and the supporting beam through the snap-fit ​​cooperation of the first and second limiting posts and the connecting post slots. This avoids loosening and displacement of the connection parts under long-term vibration conditions. The hydraulic cylinder can flexibly adjust the injection volume of hydraulic medium through the inlet pipe, and can adjust the hydraulic damping according to the impact intensity requirements under different working conditions, adapting to diverse impact protection scenarios. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a perspective view of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the localized explosion structure of the present invention. Figure 1 ;

[0028] Figure 3 This is a schematic diagram of the localized explosion structure of the present invention. Figure 2 ;

[0029] Figure 4 This is a schematic diagram of the localized explosion structure of the present invention. Figure 3 ;

[0030] Figure 5 This is a partial structural diagram of the present invention. Figure 1 ;

[0031] Figure 6 This is a partial cross-sectional view of the present invention. Figure 1 ;

[0032] Figure 7 This is a partial cross-sectional view of the present invention. Figure 2 ;

[0033] Figure 8 This is an enlarged structural diagram of point A in the present invention;

[0034] Figure 9 This is a schematic diagram of the symmetrical pressure-reducing structure of the pressure-reducing component of the present invention;

[0035] Figure 10 This is a cross-sectional schematic diagram of the symmetrical pressure reduction structure of the pressure reduction component of the present invention.

[0036] In the diagram: 1. Lower housing; 2. Upper housing; 3. Plastic cover; 4. Connector; 5. Lower protective shell; 6. Lifting lug; 7. Pressure reducing assembly; 8. Battery module; 9. Support beam; 10. Limiting post one; 11. Limiting post two; 12. Connecting frame; 13. Placement slot; 14. Connecting post; 15. Slot; 16. Slide groove; 17. Partition; 18. Telescopic rod; 19. Elastic element; 20. Honeycomb plastic pad; 21. Elastic pad; 22. Liquid inlet pipe; 701. Connecting plate; 702. Honeycomb slot; 703. Placement slot; 704. Moving slot; 705. Moving post; 706. Hydraulic cylinder; 707. Hydraulic rod; 708. Trapezoidal block; 709. Sliding groove; 710. Slider. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 - Figure 10 As shown, this embodiment provides a battery pack that can achieve multi-condition adaptive safety protection, including a lower housing 1, an upper housing 2, a plastic housing cover 3, a lower protective shell 5, a pressure reducing component 7, and a battery module 8;

[0039] The lower housing 1, upper housing 2, plastic housing cover 3, and lower protective shell 5 are all based on the multi-condition topology optimization method, which integrates multi-condition topology optimization and multi-objective size optimization to achieve lightweight design of the power battery pack.

[0040] The lower protective shell 5 is fixedly installed on one side of the lower housing 1. A connecting frame 12 is movably connected to one side of the lower protective shell 5. A connecting column 14 is fixedly connected to one side of the connecting frame 12. A sliding groove 16 is provided on one side of the connecting column 14.

[0041] The pressure-reducing component 7 includes a connecting plate 701, one end of which is slidably connected to the inner wall of the slide groove 16. A honeycomb groove 702 is formed on one side of the connecting plate 701. The honeycomb groove 702 on the connecting plate 701 can also help disperse the impact force through its own structural deformation. At the same time, the honeycomb groove 702 reduces the overall weight of the connecting plate 701. A placement groove 703 is formed on one side of the connecting plate 701. A moving groove 704 is formed on the inner wall of the placement groove 703. A moving column 705 is slidably connected to the inner wall of the moving groove 704. A hydraulic cylinder 706 is fixedly installed on the inner wall of the placement groove 703. A hydraulic rod 707 is slidably connected to the inner wall of the hydraulic cylinder 706. A slider 710 is fixedly connected to one end of the hydraulic rod 707. A trapezoidal block 708 is fixedly connected to one end of the moving column 705. A sliding groove 700 is formed on one side of the trapezoidal block 708. 9. When the battery pack is subjected to an external impact, the impact force first acts on the honeycomb plastic pad 20 and is transmitted to the trapezoidal block 708. After being subjected to force, the trapezoidal block 708 drives the moving column 705 to slide along the moving groove 704. During the movement of the trapezoidal block 708, its sliding groove 709 slides relative to the slider 710 at the end of the hydraulic rod 707, pushing the hydraulic rod 707 to slide along the inner wall of the hydraulic cylinder 706. The hydraulic damping effect is used to further buffer the impact force. The pressure reducing component 7 is also provided with a structure that connects the honeycomb plastic pad 20 on both sides. The structure that connects the honeycomb plastic pad 20 on both sides of the pressure reducing component 7 is provided with two sets of symmetrical pressure reducing structures. One side of the hydraulic cylinder 706 is fixedly connected to the liquid inlet pipe 22. One end of the liquid inlet pipe 22 passes through the connecting plate 701. The hydraulic medium in the hydraulic cylinder 706 is pressed into the corresponding amount according to the requirements through the liquid inlet pipe 22.

[0042] One side of the slider 710 is slidably connected to the inner wall of the sliding groove 709. The connecting column 14 and the pressure reducing component 7 are provided in multiple sets. Four sets of pressure reducing components 7 form a cavity for placing the battery module 8. The battery module 8 is placed in the cavity formed by the four sets of pressure reducing components 7. The honeycomb plastic pad 20 is tightly attached to the battery module 8 to achieve preliminary buffer protection. One side of the trapezoidal block 708 is fixedly connected to the honeycomb plastic pad 20, and one side of the honeycomb plastic pad 20 is attached to the battery module 8.

[0043] In this embodiment, the lower housing 1 and the upper housing 2 are fixedly installed. A plastic cover 3 is fixedly installed on one side of the upper housing 2. The fixed installation of the lower housing 1 and the upper housing 2 forms a basic protective structure. The plastic cover 3 further enhances the sealing of the housing. A connector 4 is fixedly installed on one side of the lower housing 1, and a lifting lug 6 is fixedly installed on one side of the lower housing 1. The lower housing 1 and the upper housing 2 are fixedly installed through the lifting lug 6. The lower housing 1 and the upper housing 2 are fixedly fixed with the lifting lug 6 to ensure the stability of the overall structure. A limiting post 10 is fixedly connected to one side of the lower protective shell 5. A supporting beam 9 is fixedly connected to the inner wall of the upper housing 2. A limiting post 2 11 is fixedly connected to one side of the supporting beam 9. A slot 15 is opened on one side of the connecting post 14. One end of the limiting post 10 is engaged with the inner ring surface of the slot 15. The lower protective shell 5 is engaged with the slot 15 of the connecting post 14 through the limiting post 10 and the supporting beam. The limiting post 11 of the 9th column is engaged with the slot 15 of the connecting post 14 to achieve stable assembly. One end of the limiting post 11 is engaged with the inner ring surface of the slot 15. A partition 17 is fixedly connected to the inner wall of the lower box 1. A cavity for placing the control terminal of the connecting control battery module 8 is formed between the partition 17 and the lower box 1. A telescopic rod 18 is fixedly connected inside the moving groove 704. An elastic element 19 is sleeved on the side surface of the telescopic rod 18. When the trapezoidal block 708 is subjected to force, it drives the moving post 705 to slide along the moving groove 704. The telescopic rod 18 and the elastic element 19 in the moving groove 704 deform accordingly. The elastic restoring force initially offsets part of the impact force. One end of the telescopic rod 18 is fixedly connected to one side of the moving post 705. One end of the hydraulic rod 707 is set as an inclined plane. A placement groove 13 is opened on one side of the connecting frame 12. An elastic pad 21 is movably connected to the inner wall of the placement groove 13.

[0044] The battery pack proposed in this embodiment can achieve multi-condition adaptive safety protection. First, the basic protective structure is formed by the fixed installation of the lower box 1 and the upper box 2. The plastic box cover 3 further enhances the sealing of the box. The lower protective shell 5 is stably assembled by the locking post 10 and the slot 15 of the connecting post 14, and the locking post 21 of the supporting beam 9 and the slot 15 of the connecting post 14. At the same time, the lower box 1 and the upper box 2 are fixed by the lifting lug 6 to ensure the stability of the overall structure. The battery module 8 is placed within the cavity formed by four sets of pressure-reducing components 7. The honeycomb plastic pad 20 is tightly fitted with the battery module 8 to provide initial buffering protection. When the battery pack is subjected to an external impact, the impact force first acts on the honeycomb plastic pad 20 and is transmitted to the trapezoidal block 708. After being subjected to force, the trapezoidal block 708 drives the moving column 705 to slide along the moving groove 704. The telescopic rod 18 and the elastic element 19 in the moving groove 704 deform accordingly, and the elastic restoring force initially offsets part of the impact force. At the same time, during the movement of the trapezoidal block 708, its sliding... The groove 709 slides relative to the slider 710 at the end of the hydraulic rod 707, pushing the hydraulic rod 707 to slide along the inner wall of the hydraulic cylinder 706. The hydraulic medium in the hydraulic cylinder 706 is injected in the required amount through the inlet pipe 22, and the hydraulic damping effect is used to further buffer the impact force. The honeycomb groove 702 on the connecting plate 701 can also help disperse the impact force through its own structural deformation. At the same time, the honeycomb groove 702 reduces the overall weight of the connecting plate 701. The dual buffer and pressure reduction structure works together to effectively weaken the impact of external forces on the battery module 8 under different working conditions.

[0045] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 battery pack capable of achieving adaptive safety protection under multiple operating conditions, characterized in that, Includes a lower housing (1), an upper housing (2), a plastic cover (3), a lower protective shell (5), a pressure reducing assembly (7), and a battery module (8); The lower protective shell (5) is fixedly installed on one side of the lower housing (1). A connecting frame (12) is movably connected to one side of the lower protective shell (5). A connecting column (14) is fixedly connected to one side of the connecting frame (12). A sliding groove (16) is provided on one side of the connecting column (14). The pressure-reducing assembly (7) includes a connecting plate (701), one end of which is slidably connected to the inner wall of the slide groove (16). A honeycomb groove (702) is provided on one side of the connecting plate (701), and a placement groove (703) is provided on one side of the connecting plate (701). A moving groove (704) is provided on the inner wall of the placement groove (703). A moving column (705) is slidably connected to the inner wall of the moving groove (704). A hydraulic cylinder (706) is fixedly installed on the inner wall of the placement groove (703). A hydraulic rod (707) is slidably connected to the inner wall of the hydraulic cylinder (706). A slider (710) is fixedly connected to one end of the hydraulic rod (707). A trapezoidal block (708) is fixedly connected to one section of the moving column (705). A sliding groove (709) is provided on one side of the trapezoidal block (708). One side of the slider (710) is slidably connected to the inner wall of the sliding groove (709). Multiple sets of the connecting column (14) and the pressure reducing assembly (7) are provided. The four sets of pressure reducing assemblies (7) form a cavity for placing the battery module (8). One side of the trapezoidal block (708) is fixedly connected to a honeycomb plastic pad (20). One side of the honeycomb plastic pad (20) is in contact with the battery module (8).

2. The battery pack capable of multi-condition adaptive safety protection according to claim 1, characterized in that: The pressure reducing assembly (7) is further provided with a structure on both sides connected to honeycomb plastic pads (20). The structure on both sides of the pressure reducing assembly (7) connected to honeycomb plastic pads (20) is provided with two sets of symmetrical pressure reducing structures. One side of the hydraulic cylinder (706) is fixedly connected to an inlet pipe (22), and one end of the inlet pipe (22) passes through the connecting plate (701).

3. A battery pack capable of multi-condition adaptive safety protection according to claim 1, characterized in that: The lower box (1) is fixedly installed with the upper box (2), and a plastic box cover (3) is fixedly installed on one side of the upper box (2).

4. A battery pack capable of multi-condition adaptive safety protection according to claim 1, characterized in that: A connector (4) is fixedly installed on one side of the lower housing (1), and a lifting lug (6) is fixedly installed on one side of the lower housing (1). The lower housing (1) and the upper housing (2) are fixedly installed through the lifting lug (6).

5. A battery pack capable of multi-condition adaptive safety protection according to claim 1, characterized in that: The lower protective shell (5) is fixedly connected to one side of a limiting post (10), the inner wall of the upper box (2) is fixedly connected to a supporting beam (9), one side of the supporting beam (9) is fixedly connected to a limiting post (11), and one side of the connecting post (14) is provided with a slot (15).

6. A battery pack capable of multi-condition adaptive safety protection according to claim 5, characterized in that: One end of the first limiting post (10) is engaged with the inner ring surface of the slot (15), and one end of the second limiting post (11) is engaged with the inner ring surface of the slot (15).

7. A battery pack capable of multi-condition adaptive safety protection according to claim 1, characterized in that: The inner wall of the lower housing (1) is fixedly connected to a partition (17), and a cavity is formed between the partition (17) and the lower housing (1) for placing the control terminal of the connected control battery module (8).

8. A battery pack capable of multi-condition adaptive safety protection according to claim 1, characterized in that: The movable groove (704) is fixedly connected to a telescopic rod (18), and an elastic element (19) is sleeved on the side surface of the telescopic rod (18).

9. A battery pack capable of multi-condition adaptive safety protection according to claim 8, characterized in that: One end of the telescopic rod (18) is fixedly connected to one side of the movable column (705), and one end of the hydraulic rod (707) is set as an inclined plane.

10. A battery pack capable of multi-condition adaptive safety protection according to claim 1, characterized in that: The connecting frame (12) has a placement groove (13) on one side, and an elastic pad (21) is movably connected to the inner wall of the placement groove (13).

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