Battery device

Abstract

The utility model discloses a battery device, which relates to the technical field of batteries, and comprises a shell, a battery module, a battery module, a battery module, a battery module, a battery module, a battery module, a battery module, a battery module and a battery module, and is characterized in that the shell is provided with an upper cover and a lower box; the auxiliary material module comprises heat conduction silica gel and a support, the support is arranged in the containing cavity, the support is provided with a gel injection section and a bearing section, and a battery bin is defined by the bottom wall of the gel injection section, the top wall of the bearing section and the inner wall of the containing cavity; the battery module is arranged in the battery bin, a glue injection space is defined by the outer wall of the battery module, the bottom wall of the glue injection section, the top wall of the bearing section and the inner wall of the containing cavity, and the glue injection space is filled with the heat conduction silica gel; wherein the density of the bracket is smaller than that of the heat-conducting silica gel. According to the scheme, the battery module is supported by using the bracket with the density lower than that of the heat-conducting silica gel. And the bracket occupies a part of space in the battery equipment shell, and the residual glue injection space is filled with heat-conducting silica gel. According to the scheme, weight reduction of the battery equipment is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device. Background Art

[0002] In the field of battery technology, lightweighting battery equipment is crucial for improving vehicle fuel efficiency and handling performance. For example, current vehicle battery systems commonly use a structure where the battery housing is completely filled with thermally conductive silicone. While this structure effectively secures the battery cells and conducts heat, the high density of the thermally conductive silicone increases the weight of the battery equipment, which not only reduces the motorcycle's load capacity but also indirectly increases fuel consumption. This increase in weight contradicts the lightweight design goals pursued by motorcycles. Utility Model Content

[0003] The main purpose of the utility model is to provide a battery device, aiming to reduce the weight of the battery device.

[0004] To achieve the above-mentioned purpose, the battery equipment proposed in the present invention includes: a shell, the shell having an upper cover and a lower box, the upper cover and the lower box enclosed to form a cavity; an auxiliary material module, the auxiliary material module including thermal conductive silicone and a bracket, the bracket is arranged in the cavity, the bracket has a glue injection section and a load-bearing section, the bottom wall of the glue injection section, the top wall of the load-bearing section and the inner wall of the cavity enclose a battery compartment; a battery module, the battery module is arranged in the battery compartment, the outer wall of the battery module, the bottom wall of the glue injection section, the top wall of the load-bearing section and the inner wall of the cavity enclose a glue injection space, the thermal conductive silicone is filled in the glue injection space; wherein, the density of the bracket is less than the density of the thermal conductive silicone.

[0005] In one embodiment, the glue injection section has a glue injection port, and the glue injection port is connected to the outside and the battery compartment.

[0006] In one embodiment, the glue injection port includes a first silicone injection port and a second silicone injection port, and the first silicone injection port and the second silicone injection port are symmetrically spaced apart in the glue injection section.

[0007] In one embodiment, the bottom wall of the lower box abuts against the bottom wall of the load-bearing section, and the side walls of the glue injection section and the load-bearing section abut against the inner side wall of the lower box.

[0008] In one embodiment, the bracket has a thermal through hole, the thermal through hole is connected to the glue injection space, and part of the thermal conductive silicone is sandwiched between the inner wall of the lower box and the outer wall of the battery module.

[0009] In one embodiment, the minimum distance between the inner wall of the shell and the outer wall of the battery module is A, 5mm≤A≤10mm.

[0010] In one embodiment, the load-bearing section has at least one hollow portion, which is provided on a side of the load-bearing section close to the bottom wall of the lower box, and the opening direction of the hollow portion faces the bottom wall of the lower box.

[0011] In one embodiment, the load-bearing section has a reinforcing rib, which is provided in the middle of the load-bearing section, the bottom wall of the reinforcing rib abuts against the bottom wall of the lower box, and the side wall of the reinforcing rib abuts against the inner wall of the lower box.

[0012] In one embodiment, the distance between the bottom wall of the glue injection section and the highest point of the battery module away from the bottom wall of the shell is B, and B is ≥ 5 mm.

[0013] In one embodiment, the material of the stent is ethylene-vinyl acetate copolymer.

[0014] The technical solution of this utility model achieves the effect of reducing the weight of the battery device by using a composite structure composed of a bracket with a density lower than that of thermally conductive silicone and thermally conductive silicone. The current structure commonly used in vehicle battery devices completely fills the battery device housing with thermally conductive silicone. While this structure is effective in securing the battery cells and conducting heat, the high density of thermally conductive silicone increases the weight of the battery device, which not only affects the motorcycle's load capacity but also indirectly increases fuel consumption. This solution, however, uses a bracket with a density lower than that of thermally conductive silicone to support the battery module. The bracket occupies a portion of the space inside the battery device housing, primarily reducing the weight of the battery device while providing the necessary mechanical support and fixation for the battery module. Beyond the space occupied by the bracket, the remaining space for the injection molding is filled with thermally conductive silicone. As a highly efficient thermally conductive material, thermally conductive silicone's primary function is to evenly transfer heat generated by the battery module to the battery device housing, effectively managing heat and ensuring the performance and life of the battery device. This partial filling with thermally conductive silicone significantly reduces the overall weight of the battery device without compromising the device's heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 A schematic structural diagram of an embodiment of a battery device provided by the present utility model;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 for Figure 2 Middle AA section view.

[0019] Description of Figure Numbers:

[0020] 100. Battery equipment; 1. Shell; 11. Upper cover; 12. Lower box; 1a. Cavity; 2. Battery module; 2a. Glue injection space; 3. Auxiliary material module; 31. Thermal conductive silicone; 32. Bracket; 321. Glue injection section; 321a. Glue injection port; 321a1. First silicone injection port; 321a2. Second silicone injection port; 322. Load-bearing section; 322a. Hollow portion; 3221. Reinforcement rib; 3a. Battery compartment.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] The present invention provides a battery device 100 .

[0026] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present utility model, the battery device 100 includes: a shell 1, the shell 1 has an upper cover 11 and a lower box 12, the upper cover 11 and the lower box 12 enclose a cavity 1a; an auxiliary material module 3, the auxiliary material module 3 includes a thermal conductive silicone rubber 31 and a bracket 32, the bracket 32 ​​is arranged in the cavity 1a, the bracket 32 ​​has a glue injection section 321 and a load-bearing section 322, the bottom wall of the glue injection section 321, the top wall of the load-bearing section 322 and the inner wall of the cavity 1a enclose a battery compartment 3a; a battery module 2, the battery module 2 is arranged in the battery compartment 3a, the outer wall of the battery module 2, the bottom wall of the glue injection section 321, the top wall of the load-bearing section 322 and the inner wall of the cavity 1a enclose a glue injection space 2a, and the thermal conductive silicone rubber 31 is filled in the glue injection space 2a; wherein, the density of the bracket 32 ​​is less than the density of the thermal conductive silicone rubber 31.

[0027] The housing 1 has sufficient strength to protect the internal battery cells from physical impact and pressure, and can withstand environmental factors such as humidity and salt spray to prevent corrosion. The housing 1 can be made of plastic or metal.

[0028] The battery module 2, the core of the battery device 100, is composed of multiple battery cells connected in series or parallel to provide the required voltage and capacity. The battery module 2 is the main part of the battery device 100 for energy storage and output.

[0029] Auxiliary material module 3, materials or structures used for purposes such as fixation, heat conduction, and weight reduction.

[0030] The thermally conductive silica gel 31 is used to improve heat transfer inside the battery device 100 , ensuring that the heat generated by the battery device 100 during operation can be effectively dissipated to prevent overheating.

[0031] The bracket 32 ​​is used to support the battery module 2 and reduce the weight of the battery device 100. The bracket 32 ​​uses a lightweight material, such as ethylene-vinyl acetate copolymer or acrylic, to reduce the overall weight of the battery device 100, thereby improving energy efficiency and performance.

[0032] The technical solution of the present invention supports the battery module 2 by using a bracket 32 ​​with a lower density than the thermally conductive silicone 31. The bracket 32 ​​occupies a part of the space inside the shell 1 of the battery device 100. Its main function is to reduce the weight of the battery device 100 and provide necessary mechanical support and fixation for the battery module 2. In addition to the space occupied by the bracket 32, the remaining injection space 2a is filled with the thermally conductive silicone 31. As an efficient heat conduction material, the main function of the thermally conductive silicone 31 is to evenly conduct the heat generated by the battery module 2 to the shell 1 of the battery device 100, thereby effectively performing thermal management and ensuring the performance and life of the battery device 100. Through this method of partially filling the thermally conductive silicone 31, the total weight of the battery device 100 can be significantly reduced without affecting the heat dissipation performance of the battery device 100.

[0033] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the glue injection section 321 has a glue injection port 321a, and the glue injection port 321a is connected to the outside and the battery compartment 3a.

[0034] In this embodiment, the battery module 2 is loaded into the battery compartment 3a, wherein the bottom wall of the battery module 2 contacts the top wall of the load-bearing section 322; then the assembly of the battery module 2 and the bracket 32 ​​is placed into the interior of the shell 1, and finally the thermal conductive silicone 31 is injected through the injection opening until the thermal conductive silicone 31 completely fills the injection space 2a, ensuring that the battery module 2 is fixed inside the battery compartment 3a. At this point, the weight-reducing battery device 100 is assembled.

[0035] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the glue injection port 321a includes a first silicone injection port 321a1 and a second silicone injection port 321a2 , and the first silicone injection port 321a1 and the second silicone injection port 321a2 are symmetrically spaced apart in the glue injection section 321 .

[0036] In this embodiment, when the battery module 2 is placed in the battery compartment 3a, four gaps are formed between the four side walls of the battery module 2 and the four inner walls of the lower case 12. If a single injection port 321a were used, the thermally conductive silicone rubber 31 might be unevenly filled into one of the gaps. Simultaneously injecting the thermally conductive silicone rubber 31 through two symmetrically spaced injection ports 321a allows for more uniform filling of the injection space 2a, reducing the formation of bubbles and voids and ensuring that the battery module 2 is fully and evenly secured.

[0037] See also Figure 1 and Figure 2 as well as Figure 3In one embodiment of the present invention, the bottom wall of the lower box 12 abuts against the bottom wall of the load-bearing section 322 , and the side walls of the injection section 321 and the load-bearing section 322 abut against the inner side wall of the lower box 12 .

[0038] In this embodiment, the close contact design of the bottom wall and the side wall ensures good contact between the bracket 32 ​​and the lower box 12, thereby providing stable support after the battery module 2 is installed and reducing the displacement of the battery module 2 due to vibration or impact.

[0039] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the bracket 32 ​​has a thermal through hole, which is connected to the glue injection space 2a, and part of the thermal conductive silicone 31 is sandwiched between the inner wall of the lower box 12 and the outer wall of the battery module 2.

[0040] The thermal conductive through hole passes through the bracket 32 ​​transversely and communicates with the glue injection space 2a.

[0041] In this embodiment, the thermally conductive through-holes allow the thermally conductive silicone rubber 31 to more effectively contact the battery module 2 and the inner wall of the lower case 12, thereby improving heat conduction efficiency. This helps to more quickly transfer the heat generated by the battery module 2 to the housing 1 of the battery device 100, improving overall heat dissipation performance.

[0042] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the minimum distance between the inner wall of the shell 1 and the outer wall of the battery module 2 is A, 5mm≤A≤10mm.

[0043] A groove is provided on the top wall of the load-bearing section 322 where the battery module 2 is placed to limit the battery module 2. The battery module 2 is placed in the groove to accurately control the horizontal distance between the battery module 2 and the side wall of the shell 1.

[0044] In this embodiment, by preventing the thermally conductive silicone rubber 31 from being too thick, heat can be effectively transferred from the battery module 2 to the housing 1, thereby improving heat dissipation efficiency. By preventing the thermally conductive silicone rubber 31 from being too thin, the battery module 2 is firmly fixed within the housing 1, preventing displacement of the battery module 2 due to vibration or impact.

[0045] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the load-bearing section 322 has at least one hollow portion 322a, which is provided on one side of the load-bearing section 322 close to the bottom wall of the lower box 12, and the opening direction of the hollow portion 322a is toward the bottom wall of the lower box 12.

[0046] In this embodiment, by designing hollow portions 322a in the load-bearing section 322, the amount of material used can be reduced, thereby directly reducing the overall weight of the battery device 100. This is particularly important for improving energy efficiency and performance, especially in applications requiring lightweighting, such as portable devices and automobiles. Each hollow portion 322a opens toward the bottom wall of the lower case 12, facilitating processing and assembly.

[0047] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the load-bearing section 322 has a reinforcing rib 3221, which is arranged in the middle of the load-bearing section 322, the bottom wall of the reinforcing rib 3221 abuts against the bottom wall of the lower box 12, and the side wall of the reinforcing rib 3221 abuts against the inner wall of the lower box 12.

[0048] In this embodiment, the reinforcing ribs 3221 maintain the strength and rigidity of the ethylene-vinyl acetate copolymer, reducing weight while ensuring the stability and durability of the bracket 32 ​​when subjected to external forces. The presence of the reinforcing ribs 3221 enhances the impact resistance of the bracket 32, reducing deformation of the bracket 32 ​​during impact or drops, thereby protecting the battery module 2 within the bracket 32 ​​from damage.

[0049] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the distance between the bottom wall of the glue injection section 321 and the highest point of the battery module 2 away from the bottom wall of the shell 1 is B, B≥5mm.

[0050] In this embodiment, thermally conductive silicone rubber 31 is injected into the injection space 2a through the injection opening. Because the bottom wall of the injection section 321 maintains a distance of at least 5 mm from the battery module 2, the thermally conductive adhesive can flow freely and fill the entire cavity 1a. The sufficient height of the injection space 2a ensures smooth injection and filling during assembly of the battery device 100, ensuring that the thermally conductive adhesive completely covers the battery module 2, thereby securing the battery module 2 and providing a heat conduction path.

[0051] See also Figure 1 and Figure 2 as well as Figure 3 In one embodiment of the present invention, the material of the bracket 32 ​​is ethylene-vinyl acetate copolymer.

[0052] In this embodiment, the bracket 32 ​​is made of ethylene-vinyl acetate copolymer material, which has many advantages, such as light weight, good flexibility, cost-effectiveness, and easy processing. If ethylene-vinyl acetate copolymer material is not used, acrylonitrile-butadiene-styrene copolymer plastic or carbon fiber composite material can be used instead. If acrylonitrile-butadiene-styrene copolymer plastic is used, acrylonitrile-butadiene-styrene copolymer is heavier than ethylene-vinyl acetate copolymer, which will offset some of the weight reduction effect of the design. In addition, the cost of acrylonitrile-butadiene-styrene copolymer is generally higher than that of ethylene-vinyl acetate copolymer. If a carbon fiber composite material is used, although carbon fiber has excellent strength and rigidity, it is relatively expensive and the processing process is complicated, making it unsuitable for large-scale production. At the same time, the thermal conductive silicone 31 can be made of high thermal conductive silicone 31 with a thermal conductivity coefficient of 1.0, which has better thermal conductivity than ordinary thermal conductive silicone 31 with a thermal conductivity coefficient of 0.6.

[0053] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery device, characterized in that: include: The shell has an upper cover and a lower box, and the upper cover and the lower box enclose a cavity; An auxiliary material module, the auxiliary material module including thermally conductive silica gel and a bracket, the bracket being disposed in the cavity, the bracket having a glue injection section and a load-bearing section, the bottom wall of the glue injection section, the top wall of the load-bearing section, and the inner wall of the cavity enclosing a battery compartment; A battery module is disposed in the battery compartment, wherein the outer wall of the battery module, the bottom wall of the glue injection section, the top wall of the load-bearing section, and the inner wall of the cavity enclose a glue injection space, and the thermally conductive silicone is filled in the glue injection space; Wherein, the density of the bracket is less than the density of the thermal conductive silica gel.

2. The battery device according to claim 1, wherein: The glue injection section has a glue injection port, and the glue injection port is connected to the outside and the battery compartment.

3. The battery device according to claim 2, wherein: The glue injection port includes a first silicone injection port and a second silicone injection port, and the first silicone injection port and the second silicone injection port are symmetrically spaced apart and arranged in the glue injection section.

4. The battery device according to claim 1, wherein: The bottom wall of the lower box abuts against the bottom wall of the load-bearing section, and the side walls of the glue injection section and the load-bearing section abut against the inner side wall of the lower box.

5. The battery device according to claim 1, wherein: The bracket has a heat-conducting through hole, which is connected to the glue injection space. Part of the heat-conducting silica gel is sandwiched between the inner wall of the lower box and the outer wall of the battery module.

6. The battery device according to claim 1, wherein: The minimum distance between the inner wall of the shell and the outer wall of the battery module is A, 5mm≤A≤10mm.

7. The battery device according to claim 1, wherein: The load-bearing section has at least one hollow portion, which is arranged on a side of the load-bearing section close to the bottom wall of the lower box, and the opening direction of the hollow portion faces the bottom wall of the lower box.

8. The battery device according to claim 1, wherein: The load-bearing section has a reinforcing rib, which is arranged in the middle of the load-bearing section. The bottom wall of the reinforcing rib abuts against the bottom wall of the lower box, and the side wall of the reinforcing rib abuts against the inner side wall of the lower box.

9. The battery device according to claim 1, wherein: The distance between the bottom wall of the glue injection section and the highest point of the battery module away from the bottom wall of the shell is B, and B is ≥ 5 mm.

10. The battery device according to any one of claims 1 to 9, characterized in that The material of the bracket is ethylene-vinyl acetate copolymer.

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