Battery pack with good protective property

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery pack with good protective property, which comprises a supporting base, an assembling plate frame I is fixedly mounted on one side of the upper end of the supporting base, and an assembling plate frame II is fixedly mounted on the other side, close to the assembling plate frame I, of the supporting base. According to the special-shaped banding frame and the special-shaped anchoring plate, impact force can be effectively dispersed to prevent plate frame deformation and battery displacement when facing mechanical impact, the risk that a battery pole piece is damaged and falls off during welding is avoided, the overall structural stability of a battery pack is enhanced, the safety performance is further improved, and the service life of the battery pack is prolonged. Meanwhile, by arranging a longitudinal buffer cushion, a transverse buffer cushion and a bottom buffer cushion, energy can be absorbed and dispersed in time when the battery pack is vibrated or impacted, the influence of external force on the batteries is effectively reduced, mechanical stress damage of the batteries in the transportation or use process is avoided, and the service life of the batteries is further prolonged.

Description

A well-protected battery pack Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a battery pack with good protection. Background Technology

[0002] A battery pack is an energy storage device composed of multiple battery cells connected in series, parallel, or mixed configurations, and integrating a battery management system, thermal management system, structural components, electrical components, etc. It is a high-voltage or low-voltage modular unit that directly provides electrical energy to equipment or systems, and is widely used in electric vehicles, energy storage systems, consumer electronics, and other fields.

[0003] Furthermore, a well-protected battery pack typically refers to a battery pack that incorporates multiple measures in its design and manufacturing to ensure that the battery is well protected under various usage environments and conditions, thereby improving the battery's safety, stability, and lifespan. It can guarantee stability and safety under extreme conditions such as mechanical shock, thermal runaway, and electrical faults.

[0004] Existing battery packs with good protection suffer from drawbacks during use. Traditional assembly methods, often involving bundling, result in a simple production process but poor impact resistance. External impacts can easily damage and detach the electrode welds on the cells, rendering them unusable or even causing short circuits and fires, further reducing the safety of the battery pack. Furthermore, traditional battery packs often use side-welded plates, complicating the production process and increasing the risk of battery damage. Insufficient binding force leaves the batteries loose and gapped inside the pack, further reducing its ability to secure the batteries. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a battery pack with good protection, which solves the technical problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a battery pack with good protection, including a support base, an assembly frame 1 fixedly installed on one side of the upper end of the support base, an assembly frame 2 fixedly installed on the other side of the support base near the assembly frame 1, two symmetrical irregular clamping frames fixedly installed on the upper ends of the assembly frame 1 and the assembly frame 2, two symmetrical irregular anchor plates symmetrically installed on one side of the upper ends of the assembly frame 1 and the assembly frame 2, square connecting plates fixedly installed at the connection ports of the assembly frame 1 and the assembly frame 2, and several battery bodies installed at equal intervals on the inner sides of the assembly frame 1 and the assembly frame 2.

[0009] Preferably, each of the battery bodies has a connection port fixedly installed symmetrically in pairs at the upper end, and welding electrodes are fixedly welded to the upper ends of each of the two adjacent connection ports.

[0010] Preferably, an installation groove is provided at the bottom inner end of the first assembly plate frame and the second assembly plate frame, and a plurality of transverse blade plates are installed at equal intervals on the inner side of the first assembly plate frame and the second assembly plate frame, and a longitudinal blade plate is inserted and installed at the center of the plurality of transverse blade plates.

[0011] Preferably, the inner walls of the first and second assembly plate frames are symmetrically equipped with a number of longitudinal buffer pads near the inner side of the mounting groove, and the inner walls of the first and second assembly plate frames are equipped with a number of transverse buffer pads near the inner side of the mounting groove.

[0012] Preferably, a number of support feet are symmetrically installed on both sides of the lower end of the support base, and a hollow heat dissipation groove is opened at the center of the lower end of the support base.

[0013] Preferably, a bottom buffer pad is fixedly installed on the inner side of the first assembly plate frame and the second assembly plate frame near the bottom end, and a fireproof and heat-insulating layer is wrapped around the outer side wall of each of the battery bodies.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a battery pack with good protection, which has the following advantages:

[0016] 1. The overall frame is limited and fixed by setting up irregular clamping frames and irregular anchor plates. At the same time, the transverse blade plate and the longitudinal blade plate limit and fix the battery body inside the frame. This can effectively disperse the impact force when facing mechanical impact to prevent the plate frame from deforming and the battery from shifting. It avoids the risk of damage and detachment of the battery electrode welding, enhances the overall structural stability of the battery pack, and further improves the safety performance.

[0017] 2. By incorporating longitudinal buffer pads, transverse buffer pads, bottom buffer pads, and supporting rubber feet in coordination, the battery pack can absorb and disperse energy in a timely manner when subjected to vibration or impact, effectively reducing the impact of external forces on the battery, avoiding mechanical stress damage to the battery during transportation or use, and further extending the battery's service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a first-view schematic diagram of the overall structure of the support base of this utility model;

[0020] Figure 2 is an enlarged schematic diagram of the battery body structure of this utility model;

[0021] Figure 3 is a schematic diagram showing the internal cross-section of the transverse and longitudinal blade plates of this utility model.

[0022] Figure 4 is a schematic diagram showing the internal cross-section of the No. 1 and No. 2 assembly plates of this utility model.

[0023] Figure 5 is a second-view schematic diagram of the overall structure of the support base of this utility model.

[0024] The labels in the diagram represent: 1. Support base; 2. Assemble frame 1; 3. Assemble frame 2; 4. Irregular clamping frame; 5. Irregular anchor plate; 6. Square connecting plate; 7. Battery body; 8. Horizontal blade plate; 9. Vertical blade plate; 10. Vertical buffer pad; 11. Horizontal buffer pad; 12. Support rubber feet; 13. Hollowed-out heat dissipation groove; 14. Bottom buffer pad; 15. Fireproof and heat insulation layer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example 1

[0028] Referring to Figures 1-5, the first embodiment of this utility model provides a battery pack with good protection, including a support base 1, which serves to stably support the entire battery pack. An assembly frame 2 is fixedly installed on one side of the upper end of the support base 1, and an assembly frame 3 is fixedly installed on the other side of the support base 1 near the assembly frame 2. The assembly frame 2 and the assembly frame 3 are used to install the battery body 7 and form the frame structure of the battery pack. Two symmetrical irregular clamping frames 4 are fixedly installed on the upper end of the assembly frame 2 and the assembly frame 3. Two irregular anchor plates 5 are symmetrically installed on one side of the upper end of the assembly frame 2 and the assembly frame 3.

[0029] The irregular clamping frame 4 and the irregular anchor plate 5 are used to enhance the structural stability of the No. 1 assembly frame 2 and the No. 2 assembly frame 3. The irregular clamping frame 4 is a U-shaped steel plate that is rigidly connected to the irregular anchor plate 5 by bolts, which further improves the overall mechanical impact resistance of the battery pack. Square connecting plates 6 are fixedly installed at the connection ports of the No. 1 assembly frame 2 and the No. 2 assembly frame 3. The square connecting plates 6 are bolted to connect the two frames of the No. 1 assembly frame 2 and the No. 2 assembly frame 3 to ensure the rigid connection of the two frames. Several battery bodies 7 are installed at equal intervals on the inner side of the No. 1 assembly frame 2 and the No. 2 assembly frame 3. The battery pack is mainly composed of the support base 1, the No. 1 assembly frame 2, the No. 2 assembly frame 3, the irregular clamping frame 4, the irregular anchor plate 5, the square connecting plate 6 and multiple battery bodies 7.

[0030] The upper end of each battery body 7 is symmetrically fixed with two connection ports. The upper end of each two adjacent connection ports is fixedly welded with welding plates. Each battery body 7 has two symmetrical connection ports at its upper end. Adjacent connection ports are fixedly welded by welding plates. This connection method ensures that the electrical connection between battery bodies 7 is stable, can effectively transmit current, and ensure the normal power supply function of the battery pack. The welding plates are made of copper-aluminum composite material to reduce connection resistance. The copper-aluminum composite material is welded with nickel plating. The symmetrical layout of the connection ports can simplify the battery series and parallel wiring. Several support feet 12 are symmetrically installed on both sides of the lower end of the support base 1.

[0031] The supporting rubber feet 12 not only provide support but also have a certain shock absorption effect. The supporting rubber feet 12 are made of high-temperature resistant ceramicized silicone rubber. The lower center of the supporting base 1 has a hollow heat dissipation groove 13 for easy heat dissipation. The hollow heat dissipation groove 13 is combined with the air duct design to achieve passive heat dissipation. The inner side of the first assembly frame 2 and the second assembly frame 3 is fixedly installed with bottom buffer pads 14 near the bottom. The outer walls of several battery bodies 7 are all wrapped with a fireproof and heat-insulating layer 15. The fireproof and heat-insulating layer 15 is an aerogel composite material. This design of the fireproof and heat-insulating layer 15 can effectively prevent the spread of heat generated by the battery body 7 in the event of an abnormal situation, avoid fire, and also isolate the battery from the influence of external heat to a certain extent, thereby improving the safety and reliability of the battery pack.

[0032] Example 2

[0033] Referring to Figures 1-5, this is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: mounting grooves are provided at the bottom inner ends of the first assembly frame 2 and the second assembly frame 3; a plurality of horizontal blade plates 8 are installed at equal intervals on the inner sides of the first assembly frame 2 and the second assembly frame 3; a vertical blade plate 9 is inserted and installed at the center of the plurality of horizontal blade plates 8; the horizontal blade plates 8 and the vertical blade plates 9 form a cross grid to limit the displacement of the battery body 7; the horizontal blade plates 8 are evenly distributed, and the vertical blade plates 9 are inserted at their centers; this cross-shaped blade plate structure can play a good role in limiting and fixing the battery body 7; and the horizontal blade plates 8 and the vertical blade plates 9 are movably inserted and adopt a snap-lock anti-loosening design to prevent the battery body 7 from shaking inside the first assembly frame 2 and the second assembly frame 3.

[0034] Several longitudinal buffer pads 10 are symmetrically installed in pairs on the inner sidewalls of Assembly Frame 1 2 and Assembly Frame 2 3 near the inner side of the mounting groove. Several transverse buffer pads 11 are installed on the inner sidewalls of Assembly Frame 1 2 and Assembly Frame 2 3 near the inner side of the mounting groove. The transverse buffer pads 11, longitudinal buffer pads 10 and transverse buffer pads 11 are all made of polyurethane, which can buffer vibration energy and compensate for the expansion and deformation of the battery during charging and discharging. When the battery pack is impacted by external force, these transverse buffer pads 11 and longitudinal buffer pads 10 can absorb and disperse the impact force, reducing damage to the battery body 7. In addition, bottom buffer pads 14 are fixedly installed on the inner side of Assembly Frame 1 2 and Assembly Frame 2 3 near the bottom, providing all-round buffer protection for the battery.

[0035] The remaining structure is the same as that in Example 1.

[0036] The workflow of this utility model is as follows:

[0037] First, the battery pack provides a stable mounting base through the support base 1. Assembly frame 2 and assembly frame 3 are fixedly installed on both sides of its upper end, respectively. The two are connected by threaded holes on the inner side of the square connecting plate 6 and then by bolts inserted into the threaded holes to form a stable frame structure. Inside the frame, the battery bodies 7 are installed at equal intervals inside the assembly frame 2 and assembly frame 3. The support rubber feet 12 and the hollow heat dissipation grooves 13 at the bottom respectively realize the functions of shock absorption support and passive heat dissipation. Assembly frame 2 and assembly frame 3 are rigidly connected by the square connecting plate 6. The battery bodies 7 installed at equal intervals inside are fixed by cross-insertion of the horizontal blade plate 8 and the vertical blade plate 9 to limit the displacement of the battery and ensure structural stability.

[0038] Secondly, the connection port at the upper end of the battery body 7 is connected in series through welding electrode plates to form a complete circuit, ensuring electrical connection so that current can be transmitted to power external devices. The irregular clamping frame 4 and the irregular anchor plate 5 further reinforce the plate frame connection, resist external impact, enhance the overall structural stability, and improve the resistance to mechanical impact. At the same time, the longitudinal buffer pad 10 and the transverse buffer pad 11 absorb vibration energy, which can not only buffer vibration energy, but also compensate for the expansion deformation of the battery during charging and discharging. The bottom buffer pad 14 and the fireproof and heat insulation layer 15 wrapped around the battery together provide multi-directional protection to prevent the spread of thermal runaway. The fireproof and heat insulation layer 15 also has heat conduction channels.

[0039] Finally, when the battery pack is working, the heat is naturally dissipated through the hollow heat dissipation groove 13. The modular design allows the battery pack to be pre-assembled outside the frame and then installed on the support base 1, which improves production efficiency. The overall structure combines rigid fixation with flexible buffering, which takes into account both high protection and maintainability.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack with good protection includes a support base (1), an assembly frame 1 (2) is fixedly installed on one side of the upper end of the support base (1), an assembly frame 2 (3) is fixedly installed on the other side of the support base (1) near the assembly frame 1 (2), two symmetrical irregular clamping frames (4) are fixedly installed on the upper ends of the assembly frame 1 (2) and the assembly frame 2 (3), two symmetrical irregular anchor plates (5) are installed on the upper ends of the assembly frame 1 (2) and the assembly frame 2 (3) near one side port, square connecting plates (6) are fixedly installed at the connection ports of the assembly frame 1 (2) and the assembly frame 2 (3), and a plurality of battery bodies (7) are installed at equal intervals on the inner sides of the assembly frame 1 (2) and the assembly frame 2 (3).

2. The battery pack with good protection according to claim 1, characterized in that: The upper end of the battery body (7) is symmetrically fixed with two connection ports, and welding electrode plates are fixedly welded to the upper end of two adjacent connection ports.

3. The battery pack with good protective properties according to claim 1, characterized in that: The inner bottom end ports of the first assembly plate frame (2) and the second assembly plate frame (3) are provided with mounting grooves. Several horizontal knife plates (8) are installed at equal intervals on the inner sides of the first assembly plate frame (2) and the second assembly plate frame (3). A vertical knife plate (9) is inserted and installed at the center of the several horizontal knife plates (8).

4. A battery pack with good protective properties according to claim 3, characterized in that: Several longitudinal buffer pads (10) are symmetrically installed on the inner sidewalls of the first assembly plate frame (2) and the second assembly plate frame (3) near the inner side of the mounting groove. Several transverse buffer pads (11) are installed on the inner sidewalls of the first assembly plate frame (2) and the second assembly plate frame (3) near the inner side of the mounting groove.

5. A battery pack with good protective properties according to claim 1, characterized in that: The support base (1) has several support feet (12) symmetrically installed on both sides of its lower end, and a hollow heat dissipation groove (13) is provided at the center of its lower end.

6. A battery pack with good protective properties according to claim 1, characterized in that: Bottom buffer pads (14) are fixedly installed on the inner side of the first assembly plate frame (2) and the second assembly plate frame (3) near the bottom end, and the outer side walls of several battery bodies (7) are all surrounded by fireproof and heat-insulating layers (15).

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