Temperature control assembly, battery module and battery pack

Abstract

The embodiment of the utility model provides a temperature control assembly, a battery module and a battery pack, and relates to the field of battery thermal management. The temperature control assembly comprises a plate body, and the plate body is connected with at least one heating wire. The plate body is provided with at least one flow channel in the extending direction of the plate body. According to the temperature control assembly, the heating wire is arranged in the plate body, and the flow channel for the liquid to flow is formed in the plate body, so that the heating wire can be used for heating the battery cell, the liquid flowing in the flow channel can be used for cooling the battery cell, and the plate body and the heating wire are integrated, so that the cost is saved, and the space utilization rate is improved; and the structure is simpler and smaller.

Description

Technical Field

[0001] The utility model relates to the field of battery thermal management, and in particular to a temperature control component, a battery module and a battery pack. Background Art

[0002] The technical key to electric vehicles is the power battery. The performance of the power battery directly determines the overall performance, safety and service life of the electric vehicle. Since the temperature will directly affect the safety performance and life of the battery, too low will lead to a decline in the performance of the entire vehicle, and too high may cause safety accidents, so how to keep the battery in a relatively stable working state becomes very important.

[0003] On the one hand, in high temperature environments, especially in hot summer, power batteries will release a large amount of heat during the charging and discharging process or when used in high temperature environments. Heat will accumulate due to spatial influence. If the heat cannot be discharged in time, the heat will cause the temperature of the battery pack to rise. At this time, the cooling system must be started to cool the power battery. On the other hand, in low temperature conditions, especially in cold winter, the power battery's working performance is very poor or even cannot operate normally. At this time, the battery must be heated and heated to keep it at the optimal operating temperature level.

[0004] However, the prior art has the disadvantages of being too costly to design, taking up too much space, and not being compact. Utility Model Content

[0005] The purpose of the utility model is to provide a temperature control component, a battery module and a battery pack, which can heat the battery core by using the heating wire and cool the battery core by using the plate body by arranging the heating wire in the plate body and opening a flow channel for liquid flow in the plate body, and the plate body and the heating wire are integrated into one, thereby saving cost and space, and the structure is simpler and more compact.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a temperature control component, which includes a plate body connected to at least one heating wire; the plate body is provided with at least one flow channel along its extension direction.

[0008] In an optional embodiment, the plate body is provided with at least one accommodating groove, and each accommodating groove accommodates at least one heating wire.

[0009] In an optional embodiment, the length direction of the receiving groove is parallel to the length direction of the plate body; or, the length direction of the receiving groove is inclined relative to the length direction of the plate body.

[0010] In an optional embodiment, the plurality of accommodating grooves are located on the same side of the plate body; or, the plurality of accommodating grooves are located on multiple sides of the plate body, and each side is provided with one or more accommodating grooves;

[0011] Wherein, a plurality of accommodating grooves located on the same side are parallel and spaced apart.

[0012] In an optional embodiment, the plate body is provided with two accommodating grooves, and the two accommodating grooves are respectively arranged on two opposite sides of the plate body.

[0013] In an optional embodiment, the two receiving grooves are symmetrical with respect to the center line of the plate body.

[0014] In an optional embodiment, the plate body is provided with a plurality of flow channels, the plurality of flow channels are arranged at intervals, and a receiving groove is provided between two adjacent flow channels.

[0015] In an optional embodiment, the plate body is provided with at least one accommodating hole, and each accommodating hole accommodates at least one heating wire.

[0016] In a second aspect, the utility model provides a battery module, the battery module includes a plurality of battery cells and at least one of the aforementioned temperature control components, and the plate body abuts against one or more battery cells.

[0017] In a third aspect, the utility model provides a battery pack, which includes a housing and the aforementioned battery module, wherein the battery module is accommodated in the housing.

[0018] The beneficial effects of the embodiments of the utility model include:

[0019] The temperature control component comprises a plate body, and at least one heating wire is connected to the plate body; and at least one flow channel is formed along the extension direction of the plate body.

[0020] The temperature control component arranges a heating wire in a plate body and opens a flow channel for liquid flow in the plate body, so that the heating wire can be used to heat the battery cell and the liquid flowing in the flow channel can be used to cool the battery cell. The plate body and the heating wire are integrated into one, thereby saving costs, improving the utilization rate of multiple spaces, and having a simpler and more compact structure.

[0021] The battery cell module and the battery pack include all the beneficial effects of the above-mentioned temperature control component. 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 relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a battery module provided by an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0025] Figure 3 A schematic diagram of the structure of a temperature control assembly provided in an embodiment of the utility model;

[0026] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0027] Figure 5 for Figure 1 Sectional view at CC;

[0028] Figure 6 for Figure 5 A partial enlarged view of point D in the middle;

[0029] Figure 7 A schematic structural diagram of another embodiment of a temperature control component provided in an embodiment of the utility model.

[0030] Icon: 100 - battery module; 110 - battery cell; 120 - temperature control component; 121 - plate; 122 - heating wire; 123 - flow channel; 124 - receiving tank. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which 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, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the prior art, in order to achieve heating and cooling of the battery cell, the heating element and the cooling element are usually arranged separately. However, this design has the disadvantages of being too costly, occupying too much space, and not being compact.

[0038] Based on the above problem, the utility model provides a battery pack, which includes a housing and the aforementioned battery module 100 , wherein the battery module 100 is accommodated in the housing.

[0039] The battery module 100 is described in detail below:

[0040] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a battery module provided by an embodiment of the utility model; Figure 2 for Figure 1 A partial enlarged view of A in the middle. A battery module 100 includes a plurality of battery cells 110 and at least one temperature control component 120 , wherein the temperature control component 120 abuts against one or more battery cells 110 .

[0041] Specifically, in this embodiment, the battery pack is provided with a plurality of temperature control components 120, and the plurality of temperature control components 120 are arranged in parallel and at intervals, a row of battery cells 110 is arranged between two adjacent temperature control components 120, and each battery cell 110 is abutted against the temperature control components 120 on both sides.

[0042] For further information, please refer to Figure 3-Figure 6 , Figure 3 A schematic diagram of the structure of a temperature control assembly provided in an embodiment of the utility model; Figure 4 for Figure 3 A partial enlarged view of point B in the middle; Figure 5 for Figure 1 Sectional view at CC; Figure 6 for Figure 5 The temperature control assembly 120 comprises a plate body 121, and the plate body 121 is connected with at least one heating wire 122; the plate body 121 is provided with at least one flow channel 123 along its extension direction.

[0043] In this embodiment, the battery pack is provided with a plurality of plates 121 , which are arranged in parallel and at intervals, a row of battery cells 110 is arranged between two adjacent plates 121 , and each battery cell 110 is in contact with the plates 121 on both sides.

[0044] The working principle of the temperature control component 120 is as follows:

[0045] The plate 121 is provided with a flow channel 123 for liquid circulation, so that the heat generated by the battery cell 110 during operation can be taken away by the flow of liquid, thereby cooling the battery cell 110 .

[0046] The plate body 121 is also connected to a heating wire 122 . When the battery cell 110 needs to be heated, the liquid in the flow channel 123 is heated by the heating wire 122 , so that the heat can be transferred to the battery cell 110 by utilizing the flow of the liquid, thereby achieving heating of the battery cell 110 .

[0047] In this embodiment, a flow channel 123 for liquid flow is provided on the plate body 121, and a heating wire 122 is provided to connect the flow channel 123, so that the heating wire 122 can be used to heat the battery cell 110, and the flowing liquid can be used to cool the battery cell 110, thereby realizing the integration of the heating element and the cooling element. The temperature control component 120 saves costs, improves space utilization, and has a simpler and more compact structure by integrating the heating element and the cooling element.

[0048] It should be noted that, in the present embodiment, 6-8 flow channels 123 and two heating wires 122 are provided; in other embodiments, the number of flow channels 123 and heating wires 122 can be adjusted according to actual needs.

[0049] Furthermore, the plate body 121 is provided with at least one receiving groove 124, and each receiving groove 124 receives at least one heating wire 122. In the present embodiment, each receiving groove 124 receives one heating wire 122, and in other embodiments, one receiving groove 124 may also receive multiple heating wires 122. In the present embodiment, by providing the receiving groove 124 and receiving the heating wire 122 in the receiving groove 124, the space utilization rate of the temperature control component 120 is improved, and the distance between the heating wire 122 and the flow channel 123 is reduced, so that the heating wire 122 heats the liquid inside the flow channel 123, thereby improving the heating efficiency of the battery cell 110. It should be noted that, in other embodiments, the plate body 121 may also be provided with at least one receiving hole, and each receiving hole receives at least one heating wire 122.

[0050] According to the above configuration, the length direction of the receiving groove 124 is parallel to the length direction of the plate body 121; or, the length direction of the receiving groove 124 is inclined relative to the length direction of the plate body 121. In this embodiment, the length direction of the receiving groove 124 is parallel to the length direction of the plate body 121, so that the extension direction of the heating wire 122 received in the receiving groove 124 is parallel to the length direction of the plate body 121, and further, when the heating wire 122 heats the battery cell 110, the temperature of the battery cells 110 located at different positions of the battery module 100 tends to be consistent, so as to ensure the temperature balance of the battery pack.

[0051] In other embodiments, the length direction of the accommodating groove 124 is inclined relative to the length direction of the plate body 121, so that the extension direction of the heating wire 122 accommodated in the accommodating groove 124 is parallel to the length direction of the plate body 121, thereby increasing the contact area between the heating wire 122 and the battery cell 110 and improving the heating efficiency.

[0052] Please refer to Figure 5 In this embodiment, the temperature control component 120 is provided with two receiving grooves 124, and the two receiving grooves are respectively located on different sides. Specifically, the two receiving grooves 124 are respectively located on two opposite sides of the plate body 121. In other embodiments, multiple receiving grooves 124 can be located on one or more sides of the plate body 121, and each side is provided with one or more receiving grooves 124. If two or more receiving grooves 124 are provided on the same side, the multiple receiving grooves 124 on the side are provided in parallel and spaced apart.

[0053] According to the above configuration, in this embodiment, the two receiving grooves 124 are symmetrical with respect to the center line of the plate 121; so that during the heating process, the temperature of the liquid in the flow channel 123 around the center line tends to be consistent, so that when the battery cell 110 is heated, the temperature of the battery cells 110 located at different positions of the battery module 100 tends to be consistent, so as to ensure the temperature balance of the battery pack. In other embodiments, the position of the receiving groove 124 can be adjusted according to actual use.

[0054] Please refer to Figure 7 , Figure 7 A schematic diagram of the structure of another embodiment of the temperature control component 120 provided in the embodiment of the utility model. The temperature control component 120 is provided with a plurality of flow channels 123, the plurality of flow channels 123 are arranged at intervals, and a receiving groove 124 is provided between two adjacent flow channels 123, that is, the heating wire 122 is located between two opposite flow channels 123; so that during the heating process, the heating wire 122 can heat the liquid in two adjacent flow channels 123 at the same time, thereby saving costs and improving heating efficiency, and at the same time, making the temperature of the liquid in different flow channels 123 tend to the temperature, so as to ensure the temperature balance of the battery pack.

[0055] For further information, please refer to Figure 1 The plate body 121 is bent along its extension direction. Specifically, the present embodiment adopts a serpentine plate, and the battery cell 110 adopts a cylindrical battery cell 110. The serpentine plate abuts against the outer peripheral surfaces of the cylindrical battery cells 110 on both sides thereof, thereby increasing the contact area between the plate body 121 and the battery cell 110, and improving the heating and cooling efficiency of the temperature control component 120 on the battery cell 110. At the same time, it saves costs, improves the utilization efficiency of space, and has a more compact structure.

[0056] In this embodiment, the battery module 100 is further provided with two liquid collecting pipes, and the two ends of the two liquid collecting pipes are respectively connected to the two ends of the flow channel 123, so that the liquid in the flow channel 123 can be reused, saving costs and improving space utilization.

[0057] In summary, the present embodiment provides a battery pack, including a shell and a battery module 100. The battery module 100 includes a plurality of battery cells 110 and a plurality of temperature control components 120, and a row of battery cells 110 is arranged between two adjacent temperature control components 120. The plate body 121 included in the temperature control component 120 is connected to a heating wire 122 and is provided with a plurality of flow channels 123, so that the battery cell 110 can be heated by the heating wire 122, and the battery cell 110 can be cooled by the liquid flowing in the flow channel 123, and the plate body 121 and the heating wire 122 are integrated into one, realizing the integrated setting of the heating element and the cooling element. The two heating wires 122 are located on opposite sides of the plate body 121 and are symmetrical with respect to the center line of the plate body 121, so that the temperature of the battery cells 110 located at different positions of the battery module 100 tends to be consistent, ensuring the temperature balance of the battery pack. The battery pack saves costs, improves the utilization rate of multiple spaces, and has a simpler and more compact structure.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A temperature control component, characterized in that: The temperature control assembly comprises a plate body, the plate body is connected with at least one heating wire; the plate body is provided with at least one flow channel along its extension direction; The plate body is provided with at least one receiving groove, each receiving groove receives at least one heating wire, the plate body is provided with a plurality of flow channels, the plurality of flow channels are arranged at intervals, and one receiving groove is arranged between two adjacent flow channels; Alternatively, the plate body is provided with at least one accommodating hole, and each of the accommodating holes accommodates at least one of the heating wires.

2. The temperature control assembly according to claim 1, characterized in that ； The length direction of the accommodating groove is parallel to the length direction of the plate body; or, the length direction of the accommodating groove is inclined relative to the length direction of the plate body.

3. The temperature control assembly according to claim 2, characterized in that: The plurality of accommodating grooves are located on the same side of the plate body; or, the plurality of accommodating grooves are located on multiple sides of the plate body, and each side is provided with one or more accommodating grooves; Wherein, the plurality of accommodating grooves located on the same side are parallel and spaced apart.

4. The temperature control assembly according to claim 3, characterized in that ； The plate body is provided with two accommodating grooves, and the two accommodating grooves are respectively arranged on two opposite sides of the plate body.

5. The temperature control assembly according to claim 4, characterized in that: The two containing grooves are symmetrical with respect to the center line of the plate body.

6. A battery module, characterized in that: The battery module includes a plurality of battery cells and at least one temperature control assembly as described in any one of claims 1 to 5, and the plate body abuts against one or more of the battery cells.

7. A battery pack, characterized in that: The battery pack comprises a shell and the battery module as claimed in claim 6, wherein the battery module is accommodated in the shell.

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