High-strength battery pack

Abstract

The utility model discloses a high-strength battery pack which comprises a battery assembly, a shell and a cover body, the battery assembly is arranged in the shell, and the shell comprises a first connecting area; the cover body is arranged above the shell and comprises a reinforcing plate and an outer frame, the outer frame is arranged around the reinforcing plate and comprises a second connecting area and a third connecting area, the second connecting area is connected with the first connecting area, the reinforcing plate comprises a fourth connecting area, and the third connecting area is connected with the fourth connecting area; the reinforcing plate is arranged on the top of the cover body, so that the structural strength and durability of the cover body are enhanced, the fourth connecting area is arranged to be of a Z-shaped structure, and the situation that the connecting position of the third connecting area and the fourth connecting area is warped under the action of external stress is avoided; the stability of the connecting position of the third connecting area and the fourth connecting area is improved, the battery pack can have high strength and is not prone to being damaged by external impact, and safety accidents caused by damage of the battery pack are avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a high-strength battery pack. Background Technology

[0002] Currently, the energy demand of battery packs is increasing, but in existing battery technology, the energy density of individual battery cells has not been significantly improved. To increase the energy of battery packs, the common approach is to increase the volume of the battery pack or the internal space of the battery pack to accommodate larger battery cells. However, the size of the battery pack installation space in the device cannot be expanded. Therefore, the thickness of the battery pack casing is usually reduced to increase the internal space, allowing for the placement of larger battery cells within the battery pack. However, due to the reduced casing thickness, the battery pack's impact resistance is insufficient, making it susceptible to damage from external impacts, which can easily lead to safety accidents. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-strength battery pack.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A high-strength battery pack includes: a battery assembly, a housing, and a cover. The battery assembly is disposed within the housing, and the housing includes a first connection area. The cover is disposed above the housing and includes a reinforcing plate and an outer frame. The outer frame surrounds the reinforcing plate and includes a second connection area and a third connection area. The second connection area is connected to the first connection area. The reinforcing plate includes a fourth connection area, and the third connection area is connected to the fourth connection area.

[0006] In one embodiment, the first connection area includes a groove, and the second connection area has a protrusion, with the groove connected to the protrusion.

[0007] In one embodiment, a power interface is provided on one side of the housing, a protection plate is provided between the power interface and the battery assembly, a gold finger position is provided on the protection plate, and the power interface is electrically connected to the gold finger position.

[0008] In one embodiment, the housing has a plurality of locking members on the side near the battery, and the battery assembly is engaged with the locking members.

[0009] In one embodiment, the bottom of the housing is provided with a plurality of snap-fit ​​slots, and the housing is snapped into connection with the device through the plurality of snap-fit ​​slots.

[0010] In one embodiment, a cushioning foam is also included, which is disposed between the cover and the battery assembly.

[0011] In one embodiment, the battery assembly includes a plurality of individual battery cells, each of which is attached together.

[0012] In one embodiment, the thickness of the reinforcing plate is 0.1 mm to 0.2 mm.

[0013] In one embodiment, the reinforcing plate is a metal reinforcing plate.

[0014] In one embodiment, the surface of the reinforcing plate is coated with an insulating varnish.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] This utility model discloses a high-strength battery pack. A first connecting area is provided along the upper edge of the casing, and a second connecting area is provided along the lower edge of the outer frame of the cover. Ultrasonic welding is used to weld the first and second connecting areas. Because ultrasonic welding has the characteristics of high welding strength and stable welding process, it can improve the welding quality between the casing and the cover, allowing the weld joint to withstand greater impact forces, thereby protecting the battery components inside the casing. A reinforcing plate is provided on the top of the cover; the strength of the reinforcing plate is higher than that of ordinary plastic plates, enhancing the structural strength and durability of the cover, thus improving the impact resistance of the battery pack. The outer frame of the cover surrounds the reinforcing plate, and further reinforcement is provided on the outer frame of the cover. Along the third connecting area, a fourth connecting area is set on the reinforcing plate. The third and fourth connecting areas are connected by injection molding. Since injection molding can improve the reliability of the third and fourth connecting areas, the connection between the outer frame and the reinforcing plate is more stable. The fourth connecting area is set as a Z-shaped structure to prevent the connection between the third and fourth connecting areas from warping when subjected to external stress, thereby improving the stability of the connection between the third and fourth connecting areas and making it less prone to deformation and loosening. This further protects the battery components inside the casing. With this design, the battery pack of this utility model has high strength and is not easily damaged by external impacts, avoiding safety accidents caused by battery pack damage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0018] Figure 1 This is a schematic diagram of the structure of a high-strength battery pack according to one embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the connection structure between the shell and the cover;

[0020] Figure 3 This is another structural schematic diagram of a high-strength battery pack according to one embodiment of the present invention.

[0021] Reference numerals: 10, battery pack; 100, battery assembly; 200, housing; 300, cover; 210, first connection area; 310, reinforcing plate; 320, outer frame; 321, second connection area; 322, third connection area; 311, fourth connection area; 321a, protrusion; 211, groove; 220, power interface; 230, protection plate; 231, gold finger position; 240, locking piece; 250, locking slot; 400, cushioning foam; 110, battery cell. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0023] Please see Figures 1 to 3 A high-strength battery pack 10 includes: a battery assembly 100, a housing 200, and a cover 300. The battery assembly 100 is disposed inside the housing 200, and the housing 200 includes a first connection area 210. The cover 300 is disposed above the housing 200 and includes a reinforcing plate 310 and an outer frame 320. The outer frame 320 is disposed around the reinforcing plate 310 and includes a second connection area 321 and a third connection area 322. The second connection area 321 is connected to the first connection area 210. The reinforcing plate 310 includes a fourth connection area 311, and the third connection area 322 is connected to the fourth connection area 311.

[0024] It should be noted that by setting a first connecting area 210 on the upper edge of the housing 200 and a second connecting area 321 on the lower edge of the outer frame 320 of the cover 300, and using ultrasonic welding to weld the first connecting area 210 and the second connecting area 321, the welding quality of the housing 200 and the cover 300 can be improved due to the high welding strength and stable welding process of ultrasonic welding. This allows the welded joint of the housing 200 and the cover 300 to withstand greater impact forces, thereby protecting the battery pack 100 inside the housing 200. By setting a reinforcing plate 310 on the top of the cover 300, the strength of the reinforcing plate 310 is higher than that of ordinary plastic plates, thereby enhancing the structural strength and durability of the cover 300 and improving the impact resistance of the battery pack 10. The outer frame 320 of the cover 300 surrounds the reinforcing plate 310, and the outer frame 320 of the cover 300 is further reinforced with an ultrasonic welding process. A third connecting area 322 is provided on the upper edge of the frame 320, and a fourth connecting area 311 is provided on the reinforcing plate 310. The third connecting area 322 and the fourth connecting area 311 are connected by injection molding. Since the injection molding process can improve the reliability of the third connecting area 322 and the fourth connecting area 311, the connection between the outer frame 320 and the reinforcing plate 310 is more stable. The fourth connecting area 311 is set as a Z-shaped structure to prevent the connection between the third connecting area 322 and the fourth connecting area 311 from warping when subjected to external stress. This improves the stability of the connection between the third connecting area 322 and the fourth connecting area 311, making it less prone to deformation and loosening. This further protects the battery pack 100 inside the housing 200. With this design, the battery pack 10 of this utility model has high strength and is not easily damaged by external impacts, avoiding safety accidents caused by damage to the battery pack 10.

[0025] Please refer to it again. Figure 2 In one embodiment, the first connecting area 210 includes a groove 211, and the second connecting area 321 has a protrusion 321a. The groove 211 and the protrusion 321a are connected. This arrangement increases the welding area between the first connecting area 210 and the second connecting area 321, thereby further strengthening the connection between the first connecting area 210 and the second connecting area 321 and avoiding external stress concentration that could cause cracking or deformation at the connection between the first connecting area 210 and the second connecting area 321.

[0026] Please refer to it again. Figure 1 and Figure 3In one embodiment, a power interface 220 is provided on one side of the housing 200, and a protection plate 230 is provided between the power interface 220 and the battery assembly 100 to improve the impact resistance of the battery assembly 100. A gold finger position 231 is provided on the protection plate 230. The power interface 220 is electrically connected to the gold finger position 231, and then the gold finger position 231 is electrically connected to the battery assembly 100, thereby connecting the power interface 220 to the battery assembly 100. This arrangement avoids the setting of the protection plate 230 from affecting the charging and discharging function of the battery pack 10.

[0027] Please refer to it again. Figure 1 In one embodiment, the housing 200 is provided with a plurality of locking members 240 on the side near the battery assembly 100. The battery assembly 100 is engaged with the locking members 240. With this configuration, when the battery assembly 100 is subjected to external impact or vibration, the locking members 240 can effectively prevent the battery cells from shaking or falling out inside the housing, thereby protecting the battery assembly 100 from damage.

[0028] Please refer to it again. Figure 1 In one embodiment, the bottom of the housing 200 is provided with a plurality of snap-fit ​​slots 250. The housing 200 is snapped into connection with the device through the plurality of snap-fit ​​slots 250. With this configuration, when the device is subjected to external impact or vibration, the battery pack 10 is securely connected to the device through the snap-fit ​​slots 250, thereby preventing the battery pack 10 from shaking in the battery pack 10 mounting position of the device, thus protecting the battery assembly 100.

[0029] Please refer to it again. Figure 1 In one embodiment, a cushioning foam 400 is also included. The cushioning foam 400 is disposed between the cover 300 and the battery assembly 100. When the top of the battery pack 10 is compressed, the cushioning foam 400 can disperse the stress on the cover 300, avoiding stress concentration and damage to the cover 300. The cushioning foam 400 can be set as a single piece or distributed into several pieces according to the internal structure of the battery pack 10. In this embodiment, the cushioning foam 400 is set as two pieces to improve the flexibility of the cushioning foam 400 in the battery pack 10, so that the cushioning foam 400 can improve the impact resistance of the battery pack 10 without occupying too much space.

[0030] Please refer to it again. Figure 1 In one embodiment, the battery assembly 100 includes a plurality of battery cells 110, which are fitted together so that there are no gaps between the battery cells 110. This avoids the battery cells 110 vibrating and causing frictional damage to adjacent battery cells 110 when the battery pack 10 is impacted. When the battery cells 110 are fitted together, the housing 200 has a larger space inside, which can install a larger battery assembly 100 inside the housing 200.

[0031] In one embodiment, the thickness of the reinforcing plate 310 is 0.1mm to 0.2mm. When the thickness of the reinforcing plate 310 is less than 0.1mm, the strength of the reinforcing plate 310 is insufficient, resulting in insufficient impact resistance of the battery pack 10. When the thickness of the reinforcing plate 310 is greater than 0.2mm, the reinforcing plate 310 occupies too much space in the battery pack 10, reducing the installation space of the battery assembly 100 and reducing the energy of the battery pack 10. Preferably, a reinforcing plate 310 with a thickness of 0.15mm is selected, so that the reinforcing plate 310 has high strength without occupying too much space. Since the shell 200 is a plastic shell 200, the thickness of the shell 200 needs to be set to not less than 0.8mm in order to give the battery pack 10 high impact resistance. In this embodiment, the total thickness of the battery pack 10 is 15mm. When a reinforcing plate 310 with a thickness of 0.15mm is selected, the volume of the installation space of the battery assembly 100 can be increased by 4.3%, increasing the space utilization rate of the battery pack 10.

[0032] In one embodiment, the reinforcing plate 310 is a metal reinforcing plate. The metal reinforcing plate has high strength, which can further improve the impact resistance of the battery pack 10. Preferably, stainless steel plate is used as the reinforcing plate 310 to avoid the reinforcing plate 310 from contacting the air and moisture outside the battery pack 10 and rusting, thereby reducing the strength of the reinforcing plate 310.

[0033] In one embodiment, the surface of the reinforcing plate 310 is provided with insulating varnish. The insulating varnish provides electrical insulation to prevent short circuits and leakage in the battery pack 10, thereby avoiding potential safety hazards. At the same time, the insulating varnish can also enhance the wear resistance and impact resistance of the reinforcing plate 310, thereby further improving the impact resistance of the battery pack 10.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-strength battery pack, characterized in that, include: Battery components; A housing, wherein the battery assembly is disposed within the housing, and the housing includes a first connection area; and A cover body is disposed above the housing. The cover body includes a reinforcing plate and an outer frame. The outer frame is disposed around the reinforcing plate. The outer frame includes a second connecting area and a third connecting area. The second connecting area is connected to the first connecting area. The reinforcing plate includes a fourth connecting area. The third connecting area is connected to the fourth connecting area. The first connecting area includes a groove, and the second connecting area has a protrusion, wherein the groove is connected to the protrusion; A power interface is provided on one side of the housing, and a protection plate is provided between the power interface and the battery assembly. A gold finger position is provided on the protection plate, and the power interface is electrically connected to the gold finger position.

2. The high-strength battery pack according to claim 1, characterized in that, The housing has several locking components on the side near the battery, and the battery assembly is engaged with the locking components.

3. A high-strength battery pack according to claim 2, characterized in that, The bottom of the housing is provided with multiple snap-fit ​​slots, and the housing is snapped into connection with the device through the multiple snap-fit ​​slots.

4. A high-strength battery pack according to claim 1, characterized in that, It also includes cushioning foam, which is disposed between the cover and the battery assembly.

5. A high-strength battery pack according to claim 1, characterized in that, The battery assembly includes several individual battery cells, which are attached together.

6. A high-strength battery pack according to claim 1, characterized in that, The thickness of the reinforcing plate is 0.1mm to 0.2mm.

7. A high-strength battery pack according to claim 6, characterized in that, The reinforcing plate is a metal reinforcing plate.

8. A high-strength battery pack according to claim 7, characterized in that, The surface of the reinforcing plate is coated with insulating varnish.

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