Battery pack structure

Abstract

The embodiment of the utility model provides a battery pack structure and relates to the technical field of batteries. The battery pack structure comprises a liquid cooling assembly, a battery cell, a heating wire and a temperature control part, the battery cell is in contact with the liquid cooling assembly, the heating wire is arranged on the liquid cooling assembly, the temperature control part is connected with the liquid cooling assembly, and the temperature control part is used for monitoring the temperature of conveyed liquid. The liquid cooling assembly makes contact with the battery cell, the heating wire is arranged on the liquid cooling assembly, and the temperature control piece can monitor the temperature of liquid conveyed by the liquid cooling assembly. When the battery core needs to be cooled, the cooling liquid is conveyed to the position of the battery core through the liquid cooling assembly, and the battery core is cooled through the cooling liquid; when the battery cell needs to be heated, the heating wire heats the liquid in the liquid cooling assembly, and then the heated liquid is conveyed to the position of the battery cell, so that the battery cell is heated. The battery pack is simple in structure, the arrangement of the liquid cooling assembly and the heating wire not only can cool the battery cell, but also can heat the battery cell, the configuration is simple, and the cost is saved.

Description

Technical Field

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

[0002] In the power battery industry, the core of the battery pack thermal management system is to cool and heat the battery cells. The commonly used cooling method is that the coolant in the liquid cooling plate system flows away the heat of the battery cells; the commonly used heating method is to configure the vehicle with a PTC heating system to heat the coolant and then achieve thermal conduction heating of the battery cells; or configure a heating wire system to transfer heat to the battery cells through a T-beam or bus.

[0003] The battery pack structure in the prior art has a technical problem of high cost when cooling and heating the battery cells. Utility Model Content

[0004] The utility model provides a battery pack structure, which can reduce the production cost of battery core cooling and battery core heating work and is more convenient to use.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the utility model provides a battery pack structure, which includes:

[0007] Liquid cooling components;

[0008] A battery cell, wherein the battery cell is in contact with the liquid cooling assembly;

[0009] A heating wire, wherein the heating wire is arranged on the liquid cooling component;

[0010] A temperature control unit is connected to the liquid cooling assembly and is used to monitor the temperature of the transported liquid.

[0011] Optionally, the temperature control unit includes a temperature sensing collection head and a temperature sensing control unit, the temperature sensing control unit is connected to the temperature sensing collection head, and the temperature sensing collection head is connected to the liquid cooling component.

[0012] Optionally, the liquid cooling assembly includes a liquid cooling tube, a liquid cooling plate and a liquid collection tube, the liquid collection tube is connected to the liquid cooling plate, the battery cell is arranged on the liquid cooling plate, the liquid cooling tube is connected to the liquid collection tube, the heating wire is wound around the outside of the liquid cooling tube, and the temperature sensing collection head is arranged on the liquid cooling tube.

[0013] Optionally, the temperature sensing collection head and the liquid cooling tube are bonded.

[0014] Optionally, the liquid cooling plate is a strip plate structure, and there are multiple liquid cooling plates, which are arranged at intervals.

[0015] Optionally, there are two liquid collection tubes, one of which is connected to the same end of all the liquid cooling plates, and the other of which is connected to the other ends of all the liquid cooling plates, and each of which is connected to the liquid cooling tube.

[0016] Optionally, the heating wire is wound around the end of the liquid cooling tube close to the liquid accumulation tube.

[0017] Optionally, the battery pack structure further includes a heat-insulating component, and the heat-insulating component is arranged on the outer surface of the heating wire.

[0018] Optionally, the heat-insulating component and the outer surface of the heating wire are bonded together.

[0019] Optionally, the thermal insulation component is an aluminum foil thermal conductive tape.

[0020] The beneficial effects of the battery pack structure of the embodiment of the utility model include, for example:

[0021] The battery pack structure includes a liquid cooling component, a battery cell, a heating wire and a temperature control component. The battery cell is in contact with the liquid cooling component, the heating wire is arranged on the liquid cooling component, the temperature control component is connected to the liquid cooling component, and the temperature control component is used to monitor the temperature of the transported liquid. When the battery pack structure is in use, the liquid cooling component is in contact with the battery cell, the heating wire is arranged on the liquid cooling component, and the temperature control component can monitor the temperature of the liquid transported by the liquid cooling component. When the battery cell needs to be cooled, the coolant is transported to the position of the battery cell through the liquid cooling component, and the battery cell is cooled by the coolant; when the battery cell needs to be heated, the heating wire heats the liquid inside the liquid cooling component, and then transports the heated liquid to the position of the battery cell, thereby heating the battery cell. The battery pack has a simple structure, and the arrangement of the liquid cooling component and the heating wire can not only cool the battery cell, but also heat the battery cell. The configuration is simple and the cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the battery pack provided in this embodiment.

[0024] Icons: 10-liquid cooling assembly; 11-liquid cooling pipe; 12-liquid collection pipe; 13-liquid cooling plate; 20-heating wire; 30-temperature control unit; 31-temperature sensing acquisition head; 32-temperature sensing control unit; 100-battery pack structure. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0029] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0030] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0031] In the power battery industry, the core of the battery pack thermal management system is to cool and heat the battery cells. The commonly used cooling method is that the coolant in the liquid cooling plate system flows away the heat of the battery cells; the commonly used heating method is to configure the vehicle with a PTC heating system to heat the coolant and then achieve thermal conduction heating of the battery cells; or configure a heating wire system to transfer heat to the battery cells through a T-beam or bus.

[0032] The battery pack structure in the prior art has a technical problem of high cost when cooling and heating the battery cells.

[0033] Please refer to Figure 1 This embodiment provides a battery pack structure 100, which can effectively improve the above-mentioned technical problems, reduce the production cost of battery cell cooling and battery cell heating, and is more convenient to use.

[0034] The battery pack structure 100 includes a liquid cooling assembly 10, a battery cell, a heating wire 20 and a temperature control unit 30. The battery cell is in contact with the liquid cooling assembly 10, the heating wire 20 is arranged on the liquid cooling assembly 10, and the temperature control unit 30 is connected to the liquid cooling assembly 10. The temperature control unit 30 is used to monitor the temperature of the transported liquid.

[0035] Specifically, the prior art method of heating through T-beams has certain requirements for the configuration of the whole vehicle, and the cost is relatively high; the method of heating through busbars has certain requirements for the thickness of the T-beams for the arrangement of heating wires in the slots of the square battery cells, and the cylindrical battery cell busbars need to make corresponding heating wire constraint slots. In addition to requiring sufficient internal envelope space, additional costs are also required. In order to solve the above technical problems, when the battery pack structure 100 provided in this embodiment is in use, the liquid cooling component 10 is in contact with the battery cell, the heating wire 20 is arranged in the liquid cooling component 10, and the temperature control unit 30 can monitor the temperature of the liquid transported by the liquid cooling component 10. When the battery cell needs to be cooled, the coolant is transported to the position of the battery cell through the liquid cooling component 10, and the battery cell is cooled by the coolant; when the battery cell needs to be heated, the heating wire 20 heats the liquid inside the liquid cooling component 10, and then the heated liquid is transported to the position of the battery cell, thereby heating the battery cell. The battery pack structure 100 is simple. The arrangement of the liquid cooling assembly 10 and the heating wire 20 can not only cool the battery cells, but also heat the battery cells. The configuration is simple and the cost is saved.

[0036] In this embodiment, the temperature control unit 30 includes a temperature sensing head 31 and a temperature sensing control unit 32, the temperature sensing control unit 32 is connected to the temperature sensing head 31, and the temperature sensing head 31 is connected to the liquid cooling assembly 10. Specifically, the temperature sensing control unit 32 can be connected to the temperature sensing head 31 through a wiring harness, the temperature sensing head 31 is used to collect the temperature of the conveying liquid, and transmit the temperature data to the temperature sensing control unit 32 through the wiring harness, thereby achieving effective management of the heating of the battery cell and ensuring the performance of the battery cell in a low temperature environment.

[0037] It should be noted that the liquid cooling assembly 10 includes a liquid cooling tube 11, a liquid cooling plate 13 and a liquid collection tube 12, the liquid collection tube 12 is connected to the liquid cooling plate 13, the battery cell is arranged on the liquid cooling plate 13, the liquid cooling tube 11 is connected to the liquid collection tube 12, the heating wire 20 is wound around the outside of the liquid cooling tube 11, and the temperature sensing collection head 31 is arranged on the liquid cooling tube 11.

[0038] Specifically, the temperature sensing acquisition head 31 is bonded to the liquid cooling tube 11. The temperature sensing acquisition head 31 and the liquid cooling tube 11 are bonded by a foam positioning ring thermal conductive adhesive.

[0039] In this embodiment, the liquid cooling plate 13 is a strip plate structure, and the number of liquid cooling plates 13 is multiple, and the multiple liquid cooling plates 13 are arranged at intervals. Specifically, the number of liquid cooling plates 13 is seven. In other embodiments, the number of liquid cooling plates 13 can be increased or decreased, which is not specifically limited here.

[0040] It should also be noted that there are two liquid collection tubes 12 , one liquid collection tube 12 is connected to the same end of all liquid cooling plates 13 , and the other liquid collection tube 12 is connected to the other end of all liquid cooling plates 13 , and each liquid collection tube 12 is connected to a liquid cooling tube 11 .

[0041] Specifically, the heating wire 20 is wound around the end of the liquid cooling tube 11 near the liquid collection tube 12. That is, the heating wire 20 is wound around the water outlet of the liquid cooling tube 11. After the heating wire 20 is heated, it heats the liquid in the tube through the tube wall of the liquid cooling tube 11.

[0042] In order to protect the heating wire 20 and to achieve uniform heat conduction for the heating wire 20, the battery pack structure 100 further includes a heat-insulating member, which is disposed on the outer surface of the heating wire 20. Since the heating wire 20 is wound around the tube wall of the liquid cooling tube 11, there will be gaps between adjacent circles of the heating wire 20, thereby affecting the heating effect. The heat-insulating member is disposed on the outer surface of the heating wire 20 to further achieve the heat-insulating effect, thereby achieving uniform heat conduction to the tube wall of the liquid cooling tube 11.

[0043] In this embodiment, the heat preservation member is bonded to the outer surface of the heating wire 20. Specifically, the outer surface of the heating wire 20 and the gap between adjacent heating wires 20 are evenly coated with heat-conducting structural adhesive, and then the heat preservation member is wrapped around the outer surface of the heating wire 20 to cover it, so as to avoid dry burning at the exposed position of the heating wire 20.

[0044] In this embodiment, the heat-insulating member is an aluminum foil heat-conducting tape.

[0045] Furthermore, in this embodiment, the heating wire 20 on each liquid cooling tube 11 is connected in series, so as to monitor the heating state of the heating wire 20 .

[0046] The battery pack structure 100 provided in this embodiment has at least the following advantages:

[0047] The prior art method of heating through T-beams has certain requirements for the configuration of the whole vehicle and is relatively costly; the method of heating through busbars has certain requirements for the thickness of the T-beams for the arrangement of the heating wires in the slots of the square battery cells, and the cylindrical battery cell busbars need to make corresponding heating wire constraint slots. In addition to requiring sufficient internal envelope space, the above also requires additional costs. In order to solve the above technical problems, when the battery pack structure 100 provided in this embodiment is in use, the liquid cooling component 10 is in contact with the battery cell, the heating wire 20 is arranged in the liquid cooling component 10, and the temperature control unit 30 can monitor the temperature of the liquid transported by the liquid cooling component 10. When the battery cell needs to be cooled, the coolant is transported to the position of the battery cell through the liquid cooling component 10, and the battery cell is cooled by the coolant; when the battery cell needs to be heated, the heating wire 20 heats the liquid inside the liquid cooling component 10, and then the heated liquid is transported to the position of the battery cell, thereby heating the battery cell. The battery pack structure 100 is simple. The arrangement of the liquid cooling assembly 10 and the heating wire 20 can not only cool the battery cells, but also heat the battery cells. The configuration is simple and the cost is saved.

[0048] The battery pack structure 100 in this embodiment further includes a heat preservation member, which is disposed on the outer surface of the heating wire 20. Since the heating wire 20 is wound around the tube wall of the liquid cooling tube 11, there will be gaps between adjacent coils of the heating wire 20, thereby affecting the heating effect. The heat preservation member is disposed on the outer surface of the heating wire 20 to further achieve the heat preservation effect, thereby evenly conducting heat to the tube wall of the liquid cooling tube 11.

[0049] The temperature control unit 30 in this embodiment includes a temperature sensing head 31 and a temperature sensing control unit 32. The temperature sensing control unit 32 is connected to the temperature sensing head 31, and the temperature sensing head 31 is connected to the liquid cooling assembly 10. Specifically, the temperature sensing control unit 32 can be connected to the temperature sensing head 31 through a wiring harness. The temperature sensing head 31 is used to collect the temperature of the conveying liquid and transmit the temperature data to the temperature sensing control unit 32 through the wiring harness, thereby achieving effective management of the heating of the battery cell and ensuring the performance of the battery cell in a low temperature environment.

[0050] In summary, the embodiment of the utility model provides a battery pack structure 100, which includes a liquid cooling component 10, a battery cell, a heating wire 20 and a temperature control component 30. The battery cell is in contact with the liquid cooling component 10, the heating wire 20 is arranged in the liquid cooling component 10, and the temperature control component 30 is connected to the liquid cooling component 10. The temperature control component 30 is used to monitor the temperature of the transported liquid. When the battery pack structure 100 is in use, the liquid cooling component 10 is in contact with the battery cell, the heating wire 20 is arranged in the liquid cooling component 10, and the temperature control component 30 can monitor the temperature of the liquid transported by the liquid cooling component 10. When the battery cell needs to be cooled, the coolant is transported to the position of the battery cell through the liquid cooling component 10, and the battery cell is cooled by the coolant; when the battery cell needs to be heated, the heating wire 20 heats the liquid inside the liquid cooling component 10, and then the heated liquid is transported to the position of the battery cell, thereby heating the battery cell. The battery pack structure 100 is simple. The arrangement of the liquid cooling assembly 10 and the heating wire 20 can not only cool the battery cells, but also heat the battery cells. The configuration is simple and the cost is saved.

[0051] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A battery pack structure, characterized in that: include: Liquid cooling assembly (10); A battery core, wherein the battery core is in contact with the liquid cooling component (10); A heating wire (20), wherein the heating wire (20) is arranged on the liquid cooling component (10); A temperature control unit (30) is connected to the liquid cooling assembly (10), and the temperature control unit (30) is used to monitor the temperature of the transported liquid.

2. The battery pack structure according to claim 1, characterized in that: The temperature control unit (30) comprises a temperature sensing acquisition head (31) and a temperature sensing control unit (32), wherein the temperature sensing control unit (32) is connected to the temperature sensing acquisition head (31), and the temperature sensing acquisition head (31) is connected to the liquid cooling component (10).

3. The battery pack structure according to claim 2, characterized in that: The liquid cooling assembly (10) comprises a liquid cooling tube (11), a liquid cooling plate (13) and a liquid collection tube (12); the liquid collection tube (12) is connected to the liquid cooling plate (13); the battery cell is arranged on the liquid cooling plate (13); the liquid cooling tube (11) is connected to the liquid collection tube (12); the heating wire (20) is wound around the outside of the liquid cooling tube (11); and the temperature sensing collection head (31) is arranged on the liquid cooling tube (11).

4. The battery pack structure according to claim 3, characterized in that: The temperature sensing collection head (31) and the liquid cooling tube (11) are bonded together.

5. The battery pack structure according to claim 3, characterized in that: The liquid cooling plate (13) is a strip plate structure, and there are a plurality of the liquid cooling plates (13), and the plurality of the liquid cooling plates (13) are arranged at intervals.

6. The battery pack structure according to claim 5, characterized in that: There are two liquid collection tubes (12), one of which is connected to the same end of all the liquid cooling plates (13), and the other of which is connected to the other ends of all the liquid cooling plates (13), and each of which is connected to the liquid cooling tube (11).

7. The battery pack structure according to claim 3, characterized in that: The heating wire (20) is wound around the end of the liquid cooling tube (11) close to the liquid accumulation tube (12).

8. The battery pack structure according to claim 1, characterized in that: The battery pack structure (100) further comprises a heat-insulating component, which is arranged on the outer surface of the heating wire (20).

9. The battery pack structure according to claim 8, characterized in that: The heat-insulating component and the outer surface of the heating wire (20) are bonded together.

10. The battery pack structure according to claim 8, characterized in that: The heat-insulating component is an aluminum foil heat-conducting tape.

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