All-electrode power battery with heat dissipation function, all-electrode power battery pack, electric vehicle, electric ship and demagnetization system

Abstract

The utility model provides an all-electrode power battery with a heat dissipation function, an all-electrode power battery pack, an electric vehicle, an electric ship and a degaussing system. The power battery comprises a battery positive electrode, a battery cell, a battery negative electrode, a battery cell insulating sleeve and a shell, the battery cell is of a flat cuboid laminated structure and comprises a battery cell positive plate, a battery cell positive electrode, an isolating membrane, a battery cell negative plate and a battery cell negative electrode. The battery cell positive electrode is the upper edge of the battery cell positive plate in the length direction and is not coated with electrode dressing; and the cell negative electrode is the lower edge of the cell negative plate in the length direction and is not coated with a negative electrode dressing. And an isolating membrane is arranged between the battery cell positive plate and the battery cell negative plate. The positive electrode and the negative electrode of the battery cell simultaneously have double functions of electric conduction and heat conduction, the positive electrode and the negative electrode of the battery cell are correspondingly and electrically connected with the positive electrode and the negative electrode of the battery to respectively form an electric + heat conduction conduction path on the positive electrode side and the negative electrode side, so that the direct heat dissipation effect on the battery cell can be realized, and the heat dissipation efficiency and the heat dissipation capability of the power battery are improved.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to all-electrode power batteries with heat dissipation function, all-electrode power battery packs, electric vehicles, electric ships, and demagnetization systems. Background Technology

[0002] Power batteries are mainly used in electric vehicles, electric ships, electric aircraft and energy storage. Driven by the rapid development of these fields, the demand for and development of power batteries is very rapid.

[0003] Existing power batteries have limitations in electrical and mechanical structures, resulting in the following four problems: First, the ease of use and maintainability of power battery packs; second, the electrical performance of power batteries; third, thermal runaway caused by power battery overheating; and fourth, the real-time early warning system for power batteries. There have been no good solutions to these problems before.

[0004] Regarding the issues of ease of use and maintainability of power battery packs, as well as the electrical performance of power batteries, the existing design with application number 2023112368460 and utility model name "electrodeless battery, electrodeless battery array, electrodeless battery CTC and application device" provides a good solution.

[0005] Current solutions for heat dissipation in power batteries involve using cold air or liquid cooling to cool the battery casing. However, the inventors, in their research on power batteries, recognized that the heat source originates from the battery cell itself. Therefore, heat dissipation solutions for the battery casing are insufficient and cannot completely solve the heat dissipation problem. Utility Model Content

[0006] In view of the technical problems of heat dissipation in existing power batteries, according to the first aspect of the purpose of this utility model, a full-electrode power battery with heat dissipation function is proposed. The full-electrode power battery includes a positive electrode, a negative electrode, a cell, a cell insulating sleeve, and a casing. The cell insulating sleeve encloses the cell and is placed inside the casing. The casing, the positive electrode, the negative electrode, and the cell are electrically insulated from each other and sealed together by the casing to form an integral full-electrode power battery.

[0007] The battery cell includes a positive electrode plate, a positive electrode, a separator, a negative electrode plate, and a negative electrode.

[0008] The positive electrode of the battery cell is formed as the upper edge of the positive electrode sheet along its length, and this upper edge portion is not coated with positive electrode material;

[0009] The negative electrode of the battery cell is formed as the lower edge of the negative electrode sheet along its length, and this lower edge portion is not coated with negative electrode material;

[0010] An isolation film is arranged between the positive electrode sheet of the battery cell and the negative electrode sheet of the battery cell;

[0011] The positive electrode of the battery is electrically connected with the positive electrode of the battery cell, so that the positive electrode of the battery forms an electrical conduction and heat conduction path of the positive electrode sheet of the battery cell.

[0012] The negative electrode of the battery is electrically connected with the negative electrode of the battery cell, so that the negative electrode of the battery forms an electrical conduction and heat conduction path of the negative electrode sheet of the battery cell.

[0013] Therefore, through the research of the inventor on the battery cell of the power battery, it is found that the substrate of the electrode sheet of the power battery cell is a metal / alloy material such as copper or aluminum, which is a good carrier for heat conduction, and therefore the inventor proposes to directly conduct the heat of the power battery cell through the substrate of the electrode sheet, so as to substantially solve the heat dissipation problem of the power battery.

[0014] In combination with the design between the battery cell and the positive and negative electrodes of the full-electrode power battery, the positive and negative electrodes of the battery cell both have the dual functions of electrical conduction and heat conduction, and are electrically connected with the positive and negative electrodes of the battery, respectively, to form the electrical and heat conduction paths on the positive and negative electrode sides. Compared with the traditional heat dissipation mode of the battery shell, the full-electrode power battery and the heat dissipation scheme thereof designed by the utility model can realize direct heat dissipation of the battery cell, improve the heat dissipation efficiency and heat dissipation capacity of the power battery, and reduce the safety risk caused by thermal runaway of the battery.

[0015] As an optional embodiment, the heat of the substrate of the positive electrode sheet and the negative electrode sheet of the battery cell is directly conducted to the outside of the battery cell through the positive electrode of the battery cell and the positive electrode of the battery, and the negative electrode of the battery cell and the negative electrode of the battery, respectively.

[0016] As an optional embodiment, the positive electrode of the battery is a pipe-type positive electrode, and the negative electrode of the battery is a pipe-type negative electrode.

[0017] As an optional embodiment, the inside of the positive electrode of the battery and the inside of the negative electrode of the battery are both provided with a hollow pipe structure, and the two ends of the pipe structure are connected with a cooling system, so as to directly cool the battery cell of the power battery through the cooling system.

[0018] As an optional embodiment, the positive electrode of the battery cell and the negative electrode of the battery cell are connected to form an integral structure after being treated by at least one of welding, evaporation, spraying and calendering, and have the dual functions of electrical conduction and heat conduction.

[0019] As an optional embodiment, the positive electrode of the battery cell and the positive electrode of the battery, and the negative electrode of the battery cell and the negative electrode of the battery are connected to form an integral structure through crimping or welding, respectively.

[0020] As an optional embodiment, after the plane matching or the concave-convex matching between the positive electrode of the battery cell and the positive electrode of the battery and between the negative electrode of the battery cell and the negative electrode of the battery, respectively, the integral structure is formed by welding or crimping treatment.

[0021] As an optional embodiment, the power battery is a liquid electrolyte battery, a solid electrolyte battery or a condensed state battery.

[0022] According to the second aspect of the purpose of the utility model, a full electrode power battery pack with heat dissipation function is formed by a plurality of full electrode power battery packs with heat dissipation function, the positive electrode and the negative electrode of two adjacent full electrode power battery packs are connected in series through the corresponding electrode contact rails in turn, and the electrode contact rails on the upper side of the full electrode power battery pack and the electrode contact rails on the lower side are staggered, forming the electric circuit of the full electrode power battery pack with heat dissipation function.

[0023] The full electrode power battery of the full electrode power battery pack is slidably inserted between the electrode contact rails on the upper side and the lower side of the full electrode power battery pack to realize the electrical connection and mechanical fixation of the full electrode power battery.

[0024] The positive electrode and the negative electrode of each full electrode power battery are connected to the external cooling system.

[0025] As an optional embodiment, the electrode contact rail section is "E" shaped, the bottom and the two sides of the electrode contact rail are respectively provided with a plurality of elastic contact electrodes, and a limiting grid is arranged between the two contact electrodes of the bottom, and the limiting grid controls the fixed interval of the full electrode power battery with heat dissipation function.

[0026] According to the third aspect of the purpose of the utility model, an electric vehicle is provided, which comprises the full electrode power battery pack with heat dissipation function as its energy system or at least a part of the energy system.

[0027] According to the fourth aspect of the purpose of the utility model, an electric ship is provided, which comprises the full electrode power battery pack with heat dissipation function as its energy system or at least a part of the energy system.

[0028] According to the fifth aspect of the purpose of the utility model, a degaussing system of an electric ship is provided, which comprises the full electrode power battery pack with heat dissipation function. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures can be represented by a like numeral. For purposes of clarity, not every component can be called out in every drawing. Embodiments of various aspects of the present disclosure will now be described, by way of example only, with reference to the drawings.

[0030] Figure 1 is a schematic diagram of a full-electrode power battery with a heat dissipation function according to an embodiment of the present disclosure.

[0031] Figure 2 is a schematic diagram of a full-electrode power battery with a heat dissipation function according to an embodiment of the present disclosure.

[0032] The meanings of the various reference numerals in the drawings are as follows:

[0033] 1 - battery positive electrode, 2 - battery negative electrode, 3 - battery cell, 6 - contact electrode guide rail;

[0034] 12 - battery cell positive electrode sheet, 13 - battery cell positive electrode;

[0035] 22 - battery cell negative electrode sheet, 23 - battery cell negative electrode;

[0036] 30 - isolation film 30;

[0037] 100 - full-electrode power battery; 200 - cooling liquid circulation pipeline. DETAILED DESCRIPTION

[0038] In order to better understand the technical content of the present disclosure, the following will be described in specific embodiments and in conjunction with the drawings.

[0039] Aspects of the present disclosure are described in this disclosure with reference to the drawings, in which a number of illustrative embodiments are shown. It should be understood that various concepts and embodiments introduced above, as well as those described in greater detail below, can be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any particular manner of implementation. Additionally, it is contemplated that some aspects of the present disclosure can be used in combination with other aspects of the present disclosure in any appropriate manner.

[0040] {Example 1}

[0041] In combination with Figure 1 , 2 As shown in the drawings, the full-electrode power battery with a heat dissipation function according to an embodiment of the present disclosure includes a battery positive electrode 1, a battery negative electrode 2, a battery cell 3, a battery cell insulating sleeve, and a housing. Based on the battery cell design of the application number 2023112368460 proposed by the inventor, the battery cell design of the long strip non-polar battery is adopted as an example, and the battery cell insulating sleeveFigure 1 The electric core 3 is wrapped in the shell. The shell serves as an insulating shell of the electric core of the power battery, and plays an insulating and mechanical supporting and sealing role. The shell is electrically insulated from the positive electrode 1, the negative electrode 2 and the electric core 3, and forms a whole electrode power battery through sealing of the shell.

[0042] In the embodiment of the utility model, the electric core 3 includes an electric core positive sheet 12, an electric core positive electrode 13, a separation film 30, an electric core negative sheet 22 and an electric core negative electrode 23. Preferably, the electric core 3 adopts a laminated structure of a flat cuboid.

[0043] It should be understood that the electric core positive sheet 12 and the electric core negative sheet 22 both adopt a substrate design, for example, a long strip-shaped substrate, and an electrode material layer is coated on the surface.

[0044] In combination with Figure 1 As shown, the electric core positive electrode 13 is composed of the upper edge of the electric core positive sheet 12 in the length direction, and the upper edge part is not coated with the positive electrode material.

[0045] The electric core negative electrode 23 is composed of the lower edge of the electric core negative sheet 22 in the length direction, and the lower edge part is not coated with the negative electrode material.

[0046] The separation film 30 is arranged between the electric core positive sheet 12 and the electric core negative sheet 22, so that insulation is formed between the electric core positive sheet 12 and the electric core negative sheet 22. It is particularly preferred that the size of the separation film 30 exceeds that of the electric core positive sheet 12 and the electric core negative sheet 22 to ensure the insulation and insulation therebetween.

[0047] In combination with Figure 1 As shown, the battery positive electrode 1 is electrically connected with the electric core positive electrode 13, so that the battery positive electrode 1 forms an electrical and thermal conduction path of the electric core positive electrode 13 and the electric core positive sheet 12.

[0048] The battery negative electrode 2 is electrically connected with the electric core negative electrode 23, so that the battery negative electrode 2 forms an electrical and thermal conduction path of the electric core negative electrode 23 and the electric core negative sheet 22.

[0049] Therefore, the heat of the substrate of the electric core positive sheet 12 and the electric core negative sheet 22 is directly conducted to the outside of the electric core through the electric core positive electrode 13 and the battery positive electrode 1, and the electric core negative electrode 23 and the battery negative electrode 2, respectively, to realize efficient and direct heat dissipation of the electric core.

[0050] It should be understood that in the embodiment of the utility model, the substrate of the electrode sheet (the electric core positive sheet 12 and the electric core negative sheet 22) of the electric core all adopts the existing design, for example, adopts copper, aluminum and other metal / alloy materials.

[0051] Therefore, the heat of the substrate of the positive electrode sheet 12 and the negative electrode sheet 22 of the battery cell is directly conducted to the outside of the battery cell 3 through the battery positive electrode 1 and the battery negative electrode 2, respectively. The positive electrode active material and the negative electrode active material can be the existing positive electrode active material and negative electrode active material. For example, the positive electrode active material includes but is not limited to lithium iron phosphate, lithium manganese phosphate, lithium manganese iron phosphate, lithium vanadium phosphate, lithium cobalt phosphate, lithium cobaltate, lithium manganate, lithium nickel manganate, lithium nickel cobalt manganese oxide ternary material, lithium nickel cobalt aluminum oxide ternary material, and lithium nickel manganese cobalt aluminum oxide quaternary material. The negative electrode active material includes but is not limited to at least one of graphite, natural graphite, mesocarbon microbeads, and silicon-carbon negative electrode material.

[0052] In an optional embodiment, the area of the negative electrode active material coated on the battery cell negative electrode sheet 22 is greater than the area of the positive electrode active material coated on the battery cell positive electrode sheet 12.

[0053] In an optional embodiment, the battery positive electrode 1 is a pipe type positive electrode, and the battery negative electrode 2 is a pipe type negative electrode.

[0054] In an optional embodiment, the battery positive electrode 1 and the battery negative electrode 2 are both provided with a hollow pipe structure, and the two ends of the pipe structure are respectively connected with an external cooling system to directly dissipate heat of the battery cell 3 through the cooling system.

[0055] As an optional embodiment, in the design of the battery cell 3, for the plurality of battery cell positive electrodes 13 and the plurality of battery cell negative electrodes 23, at least one of welding, evaporation, spraying, and calendering is performed to connect the plurality of battery cell positive electrodes 13 to form a whole structure and to connect the plurality of battery cell negative electrodes 23 to form a whole structure, respectively having the dual functions of electrical conduction and heat conduction.

[0056] As an optional embodiment, the battery cell positive electrode 13 and the battery positive electrode 1, and the battery cell negative electrode 23 and the battery negative electrode 2 are connected through crimping or welding to form a whole structure, form an electrical circuit and a heat conduction path, and realize electrical conduction and heat conduction of the battery cell.

[0057] As an optional embodiment, the battery cell positive electrode 13 and the battery positive electrode 1, and the battery cell negative electrode 23 and the battery negative electrode 2 are connected through planar matching or concave-convex matching, and then welded or crimped to form a whole structure.

[0058] As an optional embodiment, the power battery of the embodiment of the utility model is one of a liquid electrolyte battery, a solid electrolyte battery, or a condensed state battery.

[0059] {Embodiment 2}

[0060] In combination Figure 1 , Figure 2As shown in the embodiment of this utility model, the proposed all-electrode power battery pack with heat dissipation function is composed of multiple all-electrode power batteries 100 with heat dissipation function from the aforementioned embodiments connected in series. The positive electrode 1 and negative electrode 2 of two adjacent all-electrode power batteries 100 are connected in series sequentially through corresponding electrode contact rails 6, and the electrode contact rails on the upper side and the lower side of the all-electrode power battery pack are staggered to form the electrical circuit of the all-electrode power battery pack with heat dissipation function.

[0061] Each all-electrode power battery 100 of the all-electrode power battery pack is slidably inserted between the electrode contact rails 6 placed on the upper and lower sides of the all-electrode power battery pack to achieve electrical connection and mechanical fixation of the all-electrode power battery.

[0062] Each full-electrode power battery has its positive electrode 1 and negative electrode 2 connected to an external cooling system. Thus, the heat generated during the charging and discharging process of the battery cell is simultaneously conducted to the positive electrode 1 and negative electrode 2 by the positive electrode plate 12 and the negative electrode plate 22.

[0063] The battery positive electrode 1 and battery negative electrode 2 are designed as electrodes with internal hollow pipes. The electrode surfaces of the pipe-shaped battery positive electrode 1 and the pipe-shaped battery negative electrode 2 are provided with battery electrode pipe interfaces that connect to an external cooling system. The pipe-shaped battery positive electrode 1 and the pipe-shaped battery negative electrode 2 are respectively connected to the coolant circulation pipe 200 of the cooling system. During operation, the circulating coolant of the cooling system carries away the heat generated by the power battery in real time, realizing direct and efficient cell heat dissipation, and solving the heat dissipation problem of the power battery from the source and fundamentally.

[0064] like Figure 2 In the coolant circulation pipe 200 shown, the arrows represent the flow direction of the coolant, which flows in from one end of the pipe-type positive electrode 1 and the pipe-type negative electrode 2 of the battery, respectively. After being directly cooled by the pipes inside the positive electrode 1 and the negative electrode 2 of the battery, the coolant flows out from the other end of the positive electrode 1 and the negative electrode 2 of the battery, thus achieving circulating cooling.

[0065] In optional embodiments, an external cooling system is particularly preferred, which is a liquid cooling system. The coolant flowing in the coolant circulation pipe enters the pipe-type positive electrode 1 and the pipe-type negative electrode 2 of the battery, directly removing the heat generated during the charging and discharging of the battery cell, thereby achieving efficient and direct heat dissipation.

[0066] As an optional embodiment, in the design of the battery pack, the cross section of the electrode contact rail 5 is in the shape of "E", and the electrode contact rail design of application number 2023112368460 proposed by the inventor is cited as the basis to realize the electrical circuit and mechanical fixation between multiple power batteries. As an example, the bottom and both sides of the electrode contact rail 5 are respectively provided with a plurality of elastic contact electrodes, and a limiting grid is arranged between the two contact electrodes at the bottom, which controls the fixed interval of the full-electrode power battery with heat dissipation function.

[0067] {Embodiment 3}

[0068] According to the embodiments of the present application, an electric vehicle is also proposed, which comprises the full-electrode power battery pack with heat dissipation function of the foregoing embodiments as its energy system or at least a part of the energy system.

[0069] {Embodiment 4}

[0070] According to the embodiments of the present application, an electric ship is also proposed, which comprises the full-electrode power battery pack with heat dissipation function of the foregoing embodiments as its energy system or at least a part of the energy system.

[0071] {Embodiment 5}

[0072] According to the embodiments of the present application, a degaussing system of an electric ship is also proposed, which comprises the full-electrode power battery pack with heat dissipation function of the foregoing embodiments.

[0073] It should be noted that although the above embodiments have been described in this paper, the patent protection scope of the present application is not limited thereby. Therefore, based on the innovative concept of the present application, the changes and modifications of the embodiments described in this paper, or the equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A full-electrode power battery with heat dissipation function, characterized in that: The all-electrode power battery includes a positive electrode (1), a negative electrode (2), a cell (3), a cell insulating sleeve, and a casing. The cell insulating sleeve wraps around the cell (3) and is placed inside the casing. The casing, the positive electrode (1), the negative electrode (2), and the cell (3) are electrically insulated from each other and sealed together by the casing to form an integral all-electrode power battery. The battery cell (3) includes a positive electrode (12), a positive electrode (13), a separator (30), a negative electrode (22), and a negative electrode (23). The positive electrode (13) of the battery cell is formed as the upper edge of the positive electrode sheet (12) along the length direction of the battery cell, and the upper edge portion is not coated with positive electrode material; The negative electrode (23) of the cell is formed as the lower edge of the negative electrode sheet (22) along the length direction of the cell, and the lower edge portion is not coated with negative electrode material; An insulating membrane (30) is provided between the positive electrode (12) and the negative electrode (22) of the battery cell. Furthermore, the positive electrode (1) of the battery is electrically connected to the positive electrode (13) of the cell, so that the positive electrode (1) of the battery forms the electrical and thermal conduction path of the positive electrode (13) of the cell and the positive electrode plate (12) of the cell; The battery negative electrode (2) is electrically connected to the cell negative electrode (23), so that the battery negative electrode (2) forms the electrical and thermal conduction path of the cell negative electrode (23) and the cell negative electrode sheet (22).

2. The all-electrode power battery with heat dissipation function according to claim 1, characterized in that: The heat from the substrates of the positive electrode (12) and negative electrode (22) of the battery cell is directly conducted to the outside of the battery cell (3) via the positive electrode (13) of the battery cell and the positive electrode (1) of the battery cell, and the negative electrode (23) of the battery cell and the negative electrode (2) of the battery cell.

3. The all-electrode power battery with heat dissipation function according to claim 1, characterized in that: The positive electrode (1) and negative electrode (2) of the battery are both equipped with hollow pipe structures. The two ends of the pipe structures are connected to the cooling system, which directly dissipates heat from the battery cell (3).

4. The all-electrode power battery with heat dissipation function according to claim 1, characterized in that: The positive electrode (13) and negative electrode (23) of the battery cell are connected to form an integral structure after being processed by at least one of welding, vapor deposition, spraying, and rolling, and have the dual functions of electrical conductivity and thermal conductivity.

5. The all-electrode power battery with heat dissipation function according to claim 1, characterized in that: The positive electrode (13) of the battery cell and the positive electrode (1) of the battery, and the negative electrode (23) of the battery cell and the negative electrode (2) of the battery, are respectively subjected to pressing or welding to form an integral structure.

6. The all-electrode power battery with heat dissipation function according to claim 1, characterized in that: The positive electrode (13) of the battery cell and the positive electrode (1) of the battery, as well as the negative electrode (23) of the battery cell and the negative electrode (2) of the battery, are respectively connected by planar fitting or concave-convex fitting, and then welded or pressed to form an integral structure.

7. The all-electrode power battery with heat dissipation function according to any one of claims 1 to 6, characterized in that: The power battery is a liquid electrolyte battery, a solid electrolyte battery, or a condensed matter battery.

8. A full-electrode power battery pack with heat dissipation function, characterized in that: Composed of multiple full-electrode power batteries with heat dissipation function as described in any one of claims 1-7, the positive electrode and negative electrode of two adjacent full-electrode power batteries are connected in series in sequence through corresponding electrode contact rails, and the electrode contact rails on the upper side of the full-electrode power battery pack are staggered from the electrode contact rails on the lower side, thus forming an electrical circuit of the full-electrode power battery pack with heat dissipation function. The all-electrode power battery of the all-electrode power battery pack is slidably inserted between the electrode contact rails on the upper and lower sides of the all-electrode power battery pack to achieve electrical connection and mechanical fixation of the all-electrode power battery. Each all-electrode power battery has its positive and negative electrodes connected to an external cooling system.

9. The all-electrode power battery pack with heat dissipation function according to claim 8, characterized in that, The cross-section of the electrode contact guide rail is "E" shaped. The bottom and inner sides of the electrode contact rail are provided with a plurality of elastic contact electrodes; a limiting grid is provided between the two contact electrodes at the bottom, and the limiting grid controls the fixed interval of the all-electrode power battery with heat dissipation function.

10. An electric vehicle, characterized in that, Including the all-electrode power battery pack with heat dissipation function as described in claim 8 or 9.

11. An electric vessel, characterized in that, Including the all-electrode power battery pack with heat dissipation function as described in claim 8 or 9.

12. A degaussing system for an electric ship, characterized by: Including the all-electrode power battery pack with heat dissipation function as described in claim 8 or 9.

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