A battery device capable of achieving uniform heating and heat dissipation and resistant to high temperature

Abstract

The application discloses a battery device capable of realizing uniform heating and heat dissipation and resisting high temperature, relates to the technical field of batteries, and in particular relates to a battery device capable of realizing uniform heating and heat dissipation and resisting high temperature, which comprises an upper mounting seat and a lower mounting seat, a plurality of battery compartments are arranged between the upper mounting seat and the lower mounting seat, heat dissipation air ducts are arranged between adjacent battery compartments, a plurality of battery cell modules are arranged in the battery compartments, the battery cell modules further comprise a plurality of battery cells, the battery cells comprise high-temperature-resistant battery cells, the high-temperature-resistant battery cells are arranged in the middle part of the battery cell modules, a heat-conducting silica gel layer is arranged on one side of the battery cell modules, and a heat-conducting foam or a heat-conducting sheet is arranged on the other side of the battery cell modules; the heat-conducting foam or the heat-conducting sheet is arranged on the position of the high-temperature-resistant battery cells; the structure enables the battery pack to quickly conduct heat out when facing instantaneous high-heat impact and a long-term high-temperature environment, and enables the high-temperature-resistant battery cells in the core area to maintain stable operation, so that the thermal safety boundary of the system and the reliability under a high-temperature environment are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a battery device capable of achieving uniform heat dissipation and high-temperature resistance. Background Technology

[0002] In high-power dynamic applications such as model racing, drones, and robotics, the high-rate discharge performance of batteries has become a key factor restricting equipment performance. Currently, when high-rate batteries are continuously discharged at high current after being assembled into a pack, the heat generated inside the cells increases sharply. Especially in high-temperature environments, the battery temperature rises rapidly, often causing the system to shut down due to overheating before reaching the cutoff voltage during discharge, severely affecting the continuous operation capability of the equipment.

[0003] Existing heat dissipation technologies mainly include air cooling, liquid cooling, and phase change cooling. These methods are effective for stationary or low-protection battery systems, but they are difficult to adapt to removable, high-protection-level applications. Furthermore, if individual cells in a battery module are not effectively thermally managed, heat can easily accumulate in the central area of ​​the module, creating localized high temperatures. This exacerbates inconsistencies between cells, accelerates aging, and leads to a decrease in overall lifespan and an increase in safety risks.

[0004] In terms of materials, although conventional battery cells have been optimized in terms of high-temperature resistant electrolytes, single-crystal cathodes, and graphene-coated anodes, their high-temperature resistance is still limited. Traditional high-temperature resistant battery cells, due to limitations in polycrystalline cathodes, conventional electrolytes, and ordinary anode materials, are prone to gas generation and expansion at high temperatures, resulting in unstable performance and difficulty in meeting the requirements of high-rate discharge on their own.

[0005] Therefore, there is an urgent need for a systematic solution that integrates a high-efficiency heat dissipation structure with a high-temperature resistant battery cell to improve the overall performance and reliability of battery packs under high-rate discharge and high-temperature environments. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery technology that integrates a high-efficiency heat dissipation structure with a high-temperature resistant cell combination.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A battery device capable of uniform heat dissipation and high-temperature resistance includes: an upper mounting base and a lower mounting base; a plurality of battery compartments are provided between the upper and lower mounting bases; a heat dissipation duct is provided between adjacent battery compartments; a plurality of battery cell modules are built into the battery compartments, and the battery cell modules further include a plurality of battery cells, including high-temperature resistant battery cells, which are disposed in the middle of the battery cell modules; a thermally conductive silicone layer is provided on one side of the battery cell module, which is attached to the inner wall of the battery compartment through the thermally conductive silicone layer, and a thermally conductive foam or thermally conductive sheet is provided on the other side; the thermally conductive foam or thermally conductive sheet is disposed at the position of the high-temperature resistant battery cell.

[0009] Specifically, high-temperature resistant cells account for 30% to 50% of the total number of cells.

[0010] More specifically, the high-temperature resistant battery cell includes a single-crystal positive electrode, a high-temperature resistant electrolyte, and a negative electrode; the high-temperature resistant electrolyte includes high-boiling-point solvents, LIFSi, and LiODFB; the surface of the negative electrode is coated with graphene.

[0011] The above-mentioned battery cell module includes a first battery cell module and a second battery cell module; the first battery cell module and the second battery cell module are connected in series or in parallel; the first battery cell module is attached to one side of the inner wall of the battery compartment, and the second battery cell module is attached to the other side of the inner wall of the battery compartment; an internal heat dissipation channel is also provided between the first battery cell module and the second battery cell module; thermally conductive foam or thermally conductive sheet is disposed in the internal heat dissipation channel and abuts against the first battery cell module and the second battery cell module respectively.

[0012] Furthermore, the upper mounting base is also provided with an upper cover; the bottom of the upper mounting base is provided with a connecting plate, and a heat dissipation cavity is provided between the connecting plate and the upper cover; the connecting plate is provided with a number of first elongated holes and second elongated holes, which correspond to the positions of the first battery cell module and the second battery cell module, respectively.

[0013] Furthermore, the first and second elongated holes are also equipped with heat-conducting structures; the top cover is also equipped with heat dissipation vents, which are connected to the heat dissipation cavity.

[0014] Furthermore, the connecting plate is also provided with several heat dissipation holes, which are located between the first elongated hole and the second elongated hole.

[0015] Another specific feature is that the connecting plate is also equipped with several sub-terminals, which are connected to each battery respectively; the top cover is also equipped with a control panel and an interface module, and the connecting plate is connected to the control panel and the interface module respectively.

[0016] Another specific feature is that the lower mounting base is also provided with several lower mounting slots, and each battery compartment is installed on the corresponding lower mounting slot.

[0017] More specifically, the lower mounting base is also provided with a ventilation hole in the middle, which is connected to each heat dissipation air duct.

[0018] The beneficial effects achieved by this invention are as follows: A battery device capable of achieving uniform heat dissipation and high-temperature resistance includes: an upper mounting base and a lower mounting base; a plurality of battery compartments are provided between the upper and lower mounting bases; a heat dissipation duct is provided between adjacent battery compartments; a plurality of battery cell modules are built into the battery compartments, and each battery cell module further includes a plurality of battery cells, including high-temperature resistant battery cells, which are located in the middle of the battery cell module; a thermally conductive silicone layer is provided on one side of the battery cell module, which is bonded to the inner wall of the battery compartment through the thermally conductive silicone layer, and a thermally conductive foam or thermally conductive sheet is provided on the other side; the thermally conductive foam or thermally conductive sheet is located at the position of the high-temperature resistant battery cell; this structure provides an internal uniform heat dissipation path and an external heat dissipation path, and by setting high-temperature resistant battery cells inside, the battery pack can quickly dissipate heat through the structure when facing instantaneous high thermal shock and long-term high-temperature environment, and can maintain stable operation by relying on the high-temperature resistant battery cells in the core area, which significantly improves the thermal safety boundary and reliability of the system under high-temperature environment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a battery device that can achieve uniform heat dissipation and high temperature resistance according to an embodiment of the present invention.

[0021] Figure 2 This is a rear view structural diagram of a battery device that can achieve uniform heat dissipation and high temperature resistance according to an embodiment of the present invention.

[0022] Figure 3 This is a rear cross-sectional view of a battery device capable of achieving uniform heat dissipation and high-temperature resistance according to an embodiment of the present invention.

[0023] Figure 4 This is a top view schematic diagram of a battery device that can achieve uniform heat dissipation and high temperature resistance according to an embodiment of the present invention.

[0024] Figure 5 This is a bottom view of the upper mounting base of a battery device that can achieve uniform heat dissipation and high temperature resistance according to an embodiment of the present invention.

[0025] Figure 6 This is a top view of the upper mounting base of a battery device that can achieve uniform heat dissipation and high temperature resistance according to an embodiment of the present invention.

[0026] Figure 7This is a top view of the lower mounting base of a battery device that can achieve uniform heat dissipation and high temperature resistance according to an embodiment of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of a battery in an embodiment of the present invention, which is capable of achieving uniform heat dissipation and high temperature resistance.

[0028] Figure 9 This is a schematic diagram of the structure of a battery in an embodiment of the present invention, which is capable of achieving uniform heat dissipation and high temperature resistance.

[0029] in, Figures 1 to 9 This includes:

[0030] 1. Upper mounting base; 11. Connecting plate; 111. First elongated hole; 112. Second elongated hole; 113. Heat dissipation hole;

[0031] 114. Wiring hole;

[0032] 12. Heat dissipation cavity; 13. Thermal conduction structure; 14. Sub-terminal;

[0033] 2. Top cover; 21. Control panel; 22. Vent; 23. Handle; 24. Interface module;

[0034] 3. Lower mounting base; 31. Lower mounting groove; 32. Ventilation center hole;

[0035] 4. Battery compartment; 41. Side battery compartment; 411. Heat dissipation grille; 42. Heat dissipation duct; 431. First battery cell module;

[0036] 432. Second battery cell module; 433. Internal heat dissipation channel; 434. First battery cell; 435. Second battery cell;

[0037] 436. Connecting wire; 44. Heat-conducting plate. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] Example 1

[0040] One implementation method of the present invention for a battery device capable of achieving uniform heat dissipation and high-temperature resistance, such as... Figures 1 to 9As shown, it includes: an upper mounting base 1 and a lower mounting base 3; an upper cover 2 is fixedly mounted on the upper mounting base 1; several battery compartments 4 are provided between the upper mounting base 1 and the lower mounting base 3; and heat dissipation ducts 42 are provided between adjacent battery compartments 4. Each battery compartment 4 contains several battery cell modules. One side of each battery cell module is provided with a thermally conductive silicone layer, which is bonded to the inner wall of the battery compartment 4. The bonding can be complete or partial contact. The other side is provided with thermally conductive foam or a thermally conductive sheet.

[0041] The battery compartment 4 is constructed from high thermal conductivity metals such as aluminum alloy or copper, and is integrally formed through extrusion, die casting, or laser welding to achieve complete sealing on all five sides. The contact surface between the battery and battery compartment 4 is also equipped with a thermally conductive silicone layer, which not only enhances heat conduction but also provides cushioning and insulation.

[0042] The aforementioned structure can rapidly absorb and conduct the heat generated by each battery cell module during high-rate discharge to the entire compartment, achieving "uniform heat distribution" for each individual battery cell module. Simultaneously, the heat dissipation ducts 42 positioned between adjacent battery compartments 4 utilize natural air convection or forced air cooling generated by equipment movement to continuously remove heat from the compartment surface, forming a highly efficient thermal management cycle of "internal uniform heat distribution and external heat dissipation." This fundamentally avoids the problem of heat accumulation inside the battery pack, especially in the central area.

[0043] The aforementioned heat dissipation mechanism ensures that all battery cells within the battery pack are in a relatively uniform temperature field. This effectively prevents accelerated performance degradation of individual battery cells due to localized overheating, curbs the "bucket effect," and significantly improves the consistency and overall lifespan of the battery pack during cyclic use.

[0044] Furthermore, the battery module also includes several battery cells, including several first battery cells 434 and second battery cells 435. The first battery cells 434 are conventional battery cells, while the second battery cells 435 are high-temperature resistant battery cells, and the second battery cells 435 are located in the middle of the battery module. The second battery cells 435 (i.e., the high-temperature resistant battery cells) account for 30% to 50% of the total number of battery cells.

[0045] Specifically, the high-temperature resistant battery cell includes a single-crystal positive electrode, a high-temperature resistant electrolyte, and a negative electrode. The high-temperature resistant electrolyte includes high-boiling-point solvents, LIFSi, and LiODFB, and the surface of the negative electrode is coated with graphene.

[0046] Among them, high-boiling-point solvents include one or more of diethyl carbonate (DEC), methyl ethyl carbonate (EMC), ethylene carbonate (EC), propylene carbonate (PC), propyl propionate (PP), γ-butyrolactone (GBL), and vinylene carbonate (VC).

[0047] Single-crystal cathodes have the advantages of high thermal stability and low specific surface area, while reducing cracks and side reactions with electrolyte (such as gas generation and transition metal dissolution), thereby slowing down capacity decay.

[0048] Coating the negative electrode with graphene can alleviate system expansion and improve high-temperature cycling stability.

[0049] LiFSI, or lithium bisfluorosulfonyl imide, has the characteristics of high ionic conductivity, excellent thermal stability, and insensitivity to water.

[0050] LiODFB, or lithium difluorooxalate borate, has excellent film-forming ability. It can form films not only on the negative electrode but also on the positive electrode surface to form a stable cathode electrolyte interface film (CEI film), protecting the positive electrode material. It also has certain thermal and electrochemical stability.

[0051] The combined use of LiFSI and LiODFB can produce a significant synergistic effect of "1+1>2", with the specific effects as follows:

[0052] 1. Effectively improves ionic conductivity while ensuring a stable interface

[0053] LiFSI offers extremely high ionic conductivity, ensuring rapid migration of lithium ions and meeting fast charging requirements.

[0054] LiODFB can construct a robust and stable SEI / CEI film on the electrode surface, effectively blocking the chemical corrosion of aluminum foil by LiFSI and preventing damage to the electrode structure caused by fast charging and high-rate discharging.

[0055] Using LiFSI and LiODFB in combination can avoid the problems of interface instability and reduced cycle life caused by using LiFSI alone.

[0056] 2. Forming a higher quality SEI film

[0057] The decomposition products of LiFSI (such as LiF and Li₂SO₄) and LiODFB (such as LiF, borate esters, and oxalates) can be combined to construct a multilayered, composite, high-quality SEI film. This film combines the rigid stability of inorganic materials (LiF) with the flexibility and density of organic materials (borate esters and oxalates), exhibiting high ionic conductivity, high mechanical strength, and low impedance. This significantly improves the battery's initial coulombic efficiency, cycle life, and low-temperature performance.

[0058] 3. Synergistically improve high and low temperature performance

[0059] The excellent low-temperature conductivity of LiFSI improves low-temperature performance. The stable interface film formed by LiODFB is not easily decomposed at high temperatures, thus enhancing high-temperature stability. When used in combination, the battery can maintain excellent performance over a wider temperature range.

[0060] More specifically, the battery cell module includes a first battery cell module 431 and a second battery cell module 432. The first battery cell module 431 and the second battery cell module 432 are connected in series or in parallel; the first battery cell module 431 is attached to one side of the inner wall of the battery compartment 4, and the second battery cell module 432 is attached to the other side of the inner wall of the battery compartment 4.

[0061] An internal heat dissipation channel 433 is provided between the first cell module 431 and the second cell module 432. The internal heat dissipation channel 433 is provided with thermally conductive foam or thermally conductive sheet 44, which can also conduct the heat of the interface between the two cell modules to the compartment of the battery compartment 4, further balancing the temperature inside the compartment.

[0062] Example 2

[0063] One implementation method of the present invention for a battery device capable of achieving uniform heat dissipation and high-temperature resistance, such as... Figures 1 to 9 As shown, the main technical solution of this embodiment is basically the same as that of Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is as follows:

[0064] The lower mounting base 3 is also provided with a ventilation hole 32 in the middle. The ventilation hole 32 is connected to each heat dissipation air duct 42, which can promote the flow of air from bottom to top and enhance the convection efficiency of the overall heat dissipation air duct.

[0065] The lower mounting base 3 is also provided with several lower mounting slots 31, and the upper mounting base 1 is also provided with several upper mounting slots corresponding to the lower mounting slots 31. Each battery compartment 4 is installed between the corresponding upper mounting slot and lower mounting slot 31, realizing a snap-fit ​​connection.

[0066] Battery compartment 4 provides basic physical protection and structural support for the cell modules. This design ensures heat dissipation performance while achieving IP54 or higher dust and water resistance, and supports convenient replacement and maintenance of cell modules or individual battery compartment 4 modules, perfectly resolving the contradiction between poor heat dissipation in traditional enclosed battery packs and low protection levels in traditional air-cooled battery packs.

[0067] The bottom of the upper mounting base 1 is provided with a connecting plate 11, and a heat dissipation cavity 12 is provided between the connecting plate 11 and the upper cover 2.

[0068] The connecting plate 11 has several first elongated holes 111 and second elongated holes 112, corresponding to the positions of the first battery cell module 431 and the second battery cell module 432, respectively. Together, they form an upward auxiliary heat dissipation path, efficiently dissipating some of the heat from the top of the battery compartment and creating a three-dimensional heat dissipation pattern.

[0069] A heat-conducting structure 13 is provided above the first elongated hole 111 and the second elongated hole 112; the heat-conducting structure 13 is, for example, an inverted U-shaped heat sink, which can further assist in heat dissipation.

[0070] The top cover 2 is also provided with a heat dissipation vent 22, which is connected to the heat dissipation cavity 12. The connecting plate 11 is also provided with several heat dissipation holes 113, which are located between the first elongated hole 111 and the second elongated hole 112. Together, they form an upward auxiliary heat dissipation path, which efficiently dissipates some of the heat from the top of the battery compartment, forming a three-dimensional heat dissipation pattern.

[0071] Example 3

[0072] One implementation method of the present invention for a battery device capable of achieving uniform heat dissipation and high-temperature resistance, such as... Figures 1 to 9 As shown, the main technical solution of this embodiment is basically the same as that of Embodiment 1 or Embodiment 2. Features not explained in this embodiment adopt the explanations in Embodiment 1 or Embodiment 2, and will not be repeated here. The difference between this embodiment and Embodiment 1 or Embodiment 2 is:

[0073] In this embodiment, the battery compartment 4 also includes a side battery compartment 41 disposed on the outside of the battery device. The outer wall of the side battery compartment 41 is also provided with heat dissipation grids 411 to assist in heat dissipation, which can further enhance the heat dissipation performance.

[0074] The connecting plate 11 is also provided with several wiring holes 114 and sub-terminals 14. The wiring holes 114 are respectively set at the outlet positions of the connecting wires 436 of each battery. The connecting wires 436 of the battery are connected to the sub-terminals 14 through the wiring holes 114.

[0075] The top cover 2 is also equipped with a control panel 21 and an interface module 24, and the connecting plate 11 is connected to the control panel 21 and the interface module 24 respectively. The control panel 21 is used to control the working status of each battery, and the interface module 24 is used to connect to external charging devices or external electrical devices. It has a high degree of integration and is easy to use.

[0076] In summary, this invention provides an innovative solution to fundamentally solve the thermal management problem of high-rate battery packs by systematically integrating and optimizing the arrangement of a modular heat dissipation structure with high-temperature resistant battery cells made of specific materials. Specifically, it brings the following beneficial effects:

[0077] 1. Achieving deep synergy between "physical heat dissipation" and "chemical heat resistance," breaking through the ceiling of traditional thermal management technologies: This invention is not a simple superposition of heat dissipation structures and high-temperature resistant materials, but rather a strategic arrangement of high-temperature resistant cells with specific material systems (such as single-crystal cathodes, electrolytes containing LiFSi and LiODFB, and graphene-coated anodes) in the center of the battery pack where heat accumulation is most severe. This complements the physical heat dissipation system composed of a high thermal conductivity battery compartment and heat dissipation ducts. This design allows the battery pack to effectively resist the risk of thermal runaway when facing instantaneous high thermal shocks, thanks to the inherent high-temperature stability of its materials. At the same time, the heat of the entire system can be quickly dissipated by an efficient three-dimensional heat dissipation path, achieving a synergistic effect of "rock-solid core area and efficient and rapid overall heat dissipation," significantly improving the system's thermal safety boundary and reliability under extreme conditions.

[0078] 2. A multi-dimensional, three-dimensional, high-efficiency heat dissipation network has been constructed, with a complete heat dissipation path and extremely high efficiency:

[0079] Interface heat conduction path: The cell module achieves a large-area tight fit with the inner wall of the battery compartment 4 through the thermally conductive silicone layer, laying the foundation for efficient heat conduction.

[0080] Internal heat dissipation path: The heat from the contact interface of the battery cell modules is laterally dissipated and homogenized through the internal heat dissipation channel 433 and the thermally conductive foam or thermally conductive sheet 44 therein, effectively eliminating local hot spots.

[0081] External convection heat dissipation path: The heat dissipation air duct 42 between the battery compartments 4 and the ventilation hole in the lower mounting base 3 constitute the main vertical heat dissipation channel; while the heat dissipation cavity 12, the first elongated hole 111, the second elongated hole 112, the heat-conducting structure 13, and the heat dissipation vent 22 of the upper mounting base 1 together form an upward auxiliary heat dissipation path. This multi-dimensional three-dimensional heat dissipation network ensures that heat can be continuously and quickly carried away from the inside of the cell module to the outside of the battery pack.

[0082] 3. Through dual optimization of materials and structure, the consistency and cycle life of the battery pack have been greatly improved:

[0083] In terms of materials, the high-temperature resistant battery cell uses a single-crystal positive electrode with good thermal stability. The electrolyte system using LiFSi and LiODFB can form a stable and highly conductive SEI / CEI film at the electrode interface, while the graphene-coated negative electrode alleviates system expansion, together ensuring the intrinsic stability of the battery cell module at high temperatures.

[0084] At the structural level, the overall heat dissipation design ensures a highly uniform temperature field. The combination of these two factors effectively curbs the "bucket effect" caused by localized overheating and material side reactions, resulting in more consistent performance degradation across all battery cells within the pack, thus significantly extending the overall cycle life.

[0085] 4. While ensuring thermal performance, it also takes into account the requirements of high protection level and modular disassembly:

[0086] The modular battery compartment 4 design itself constitutes a robust semi-sealed unit, easily achieving a high level of dust and water resistance (such as IP54). At the same time, this compartmentalized structure supports the independent disassembly, replacement, and maintenance of individual battery compartments or cells, solving the technical contradiction that traditional high-efficiency heat dissipation solutions such as liquid cooling are difficult to apply in disassembled, high-protection scenarios, greatly improving the product's practicality, maintainability, and market adaptability.

[0087] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A battery device capable of achieving uniform heat dissipation and high-temperature resistance, characterized in that, include: Upper mounting base and lower mounting base; A plurality of battery compartments are provided between the upper mounting base and the lower mounting base; a heat dissipation duct is provided between adjacent battery compartments; The upper mounting base is provided with a connecting plate at its bottom, and a heat dissipation cavity is provided between the connecting plate and the upper cover; the upper cover is also provided with a heat dissipation port, which is connected to the heat dissipation cavity; the lower mounting base is also provided with a ventilation hole in the middle, which is connected to each heat dissipation duct. The battery compartment contains several battery cell modules, and each battery cell module further includes several battery cells, including high-temperature resistant battery cells, which are located in the middle of the battery cell module. One side of the battery cell module is provided with a thermally conductive silicone layer, which is attached to the inner wall of the battery compartment. The other side is provided with thermally conductive foam or thermally conductive sheet. The thermally conductive foam or thermally conductive sheet is installed at the location of the high-temperature resistant battery cell.

2. The battery device according to claim 1, characterized in that: The high-temperature resistant battery cell includes a single-crystal positive electrode, a high-temperature resistant electrolyte, and a negative electrode. The high-temperature resistant electrolyte includes a high-boiling-point solvent, LIFSi, and LiODFB; The surface of the negative electrode is coated with graphene.

3. A battery device according to claim 2 that can achieve uniform heat dissipation and high temperature resistance, characterized in that: The high-temperature resistant cells account for 30% to 50% of the total number of cells.

4. A battery device capable of achieving uniform heat dissipation and high-temperature resistance according to claim 1, 2, or 3, characterized in that: The battery cell module includes a first battery cell module and a second battery cell module; the first battery cell module and the second battery cell module are connected in series or in parallel; The first battery cell module is attached to one side of the inner wall of the battery compartment, and the second battery cell module is attached to the other side of the inner wall of the battery compartment. An internal heat dissipation channel is provided between the first battery cell module and the second battery cell module; the thermally conductive foam or thermally conductive sheet is disposed in the internal heat dissipation channel and abuts against the first battery cell module and the second battery cell module respectively.

5. A battery device according to claim 4 that can achieve uniform heat dissipation and high temperature resistance, characterized in that: The upper mounting base is also provided with an upper cover; The connecting plate is provided with a plurality of first elongated holes and second elongated holes, which correspond to the positions of the first battery cell module and the second battery cell module, respectively.

6. A battery device according to claim 5 that can achieve uniform heat dissipation and high temperature resistance, characterized in that: The first and second elongated holes are also provided with heat-conducting structures.

7. A battery device according to claim 6 that can achieve uniform heat dissipation and high temperature resistance, characterized in that: The connecting plate is also provided with a number of heat dissipation holes, which are located between the first elongated hole and the second elongated hole.

8. A battery device capable of achieving uniform heat dissipation and high-temperature resistance according to claim 5, characterized in that: The connecting plate is also provided with several sub-terminals, which are connected to each battery respectively; The upper cover is also equipped with a control panel and an interface module, and the connecting plate is connected to the control panel and the interface module respectively.

9. A battery device according to claim 1 that can achieve uniform heat dissipation and high temperature resistance, characterized in that: The lower mounting base is also provided with several lower mounting slots, and each battery compartment is respectively installed on the corresponding lower mounting slot.

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