阅读说明：本技术 温控组件及电池包 (Temperature control assembly and battery pack ) 是由 谭亮稳 谭晶 陈文会 于 2020-04-29 设计创作，主要内容包括：本申请公开了一种温控组件及电池包。温控组件包括第一导热板,第一导热板设有贴合面；第二导热板,第二导热板包括平展部及连接平展部的第一凸起部、第二凸起,且第二凸起部与第一凸起部交错设置,平展部贴合于贴合面,第一凸起部朝向远离贴合面的一侧凸起,以在第一凸起与贴合面之间形成流道,流道用于供冷却介质流通,第二凸起部朝向远离贴合面的一侧凸起,以在第一凸起部与贴合面之间形成收容腔；及加热件,加热件收容于收容腔。本申请提供的温控组件将散热功能与加热功能集成于一体,缩小电池包的体积。(The application discloses temperature control assembly and battery package. The temperature control component comprises a first heat conducting plate, and the first heat conducting plate is provided with a binding surface; the second heat conducting plate comprises a flat part, a first protruding part and a second protruding part, the first protruding part and the second protruding part are connected with the flat part, the second protruding part and the first protruding part are arranged in a staggered mode, the flat part is attached to the attaching surface, the first protruding part protrudes towards one side far away from the attaching surface so as to form a flow channel between the first protruding part and the attaching surface, the flow channel is used for circulation of cooling media, and the second protruding part protrudes towards one side far away from the attaching surface so as to form an accommodating cavity between the first protruding part and the attaching surface; and the heating element is contained in the containing cavity. The application provides a temperature control component with heat dissipation function and heating function integration in an organic whole, reduces the volume of battery package.)

1. A temperature control assembly, comprising:

the first heat-conducting plate is provided with a binding surface;

the second heat conducting plate comprises a flat part, a first protruding part and a second protruding part, the first protruding part and the second protruding part are connected with the flat part, the second protruding part and the first protruding part are arranged in a staggered mode, the flat part is attached to the attaching surface, the first protruding part protrudes towards one side far away from the attaching surface, a flow channel is formed between the first protruding part and the attaching surface, the flow channel is used for flowing of a cooling medium, and the second protruding part protrudes towards one side far away from the attaching surface, so that an accommodating cavity is formed between the second protruding part and the attaching surface;

and the heating element is contained in the containing cavity.

2. The temperature-control assembly of claim 1, wherein the heating element includes first and second oppositely disposed faces, the first face being attached to the first thermally conductive plate, the second face facing and spaced apart from the second thermally conductive plate.

3. The temperature control assembly of claim 2, further comprising a thermal insulation layer, wherein the thermal insulation layer is received in the receiving cavity, the thermal insulation layer is located between the heating element and the second heat conducting plate, and one surface of the thermal insulation layer abuts against the heating element and the other surface abuts against the second heat conducting plate.

4. The temperature control assembly of claim 3, further comprising an adhesive layer having one surface bonded to the first heat-conducting plate and another surface bonded to the heating element.

5. The temperature control assembly of claim 1, wherein the heating element includes a resistive layer and an insulating layer disposed around a periphery of the resistive layer, the insulating layer, and the first thermally conductive plate extending in the same direction.

6. The temperature control assembly according to any one of claims 1 to 5, wherein the number of the heating members is plural, and the plural heating members are arranged at intervals in the first direction; the temperature control component further comprises a connecting piece, wherein the connecting piece is located at the end part of the heating piece, and the heating piece is electrically connected with the connecting piece in a plurality.

7. The temperature control assembly of claim 6, wherein the flow channel comprises a plurality of main flow channels arranged along the first direction and a plurality of side flow channels, the side flow channels are disposed on opposite sides of each main flow channel, the side flow channels connect two adjacent main flow channels, and at least one main flow channel is disposed between any two adjacent heating members.

8. The temperature control assembly of claim 7, wherein each of the primary flow passages comprises a first primary flow passage and a second primary flow passage spaced apart from each other, the flow direction of the cooling medium in the first primary flow passage being opposite to the flow direction of the cooling medium in the second primary flow passage, and the inlet of the cooling medium in the first primary flow passage being different from the inlet of the cooling medium in the second primary flow passage, and the outlet of the cooling medium in the first primary flow passage being different from the outlet of the cooling medium in the second primary flow passage.

9. The temperature control assembly of claim 8, wherein the inlet for the cooling medium in the first primary flow path is on the same side of the heating element as the inlet for the cooling medium in the second primary flow path, opposite the connector.

10. A battery pack comprising a battery and a temperature control assembly as claimed in any one of claims 1 to 9, the temperature control assembly being mounted to the battery.

Technical Field

The application relates to the technical field of batteries, in particular to a temperature control assembly and a battery pack.

Background

The power battery is used as a core power component of the electric automobile, and plays an important role in the control performance, safety, service life and the like of the electric automobile. The performance of the power battery is greatly influenced by temperature, for example, when the power battery is continuously in a high-temperature environment, the service life and the energy efficiency of the power battery are reduced, and even safety accidents are caused; when the power battery is in a low-temperature environment, active substances in the power battery are inactivated, so that the power battery cannot be normally used. Therefore, in the conventional technology, a heat dissipation system and a heating system are configured in the battery pack to control the working temperature of the power battery within a reasonable range. However, in the conventional technology, the heat dissipation system and the heating system in the battery pack are two independent systems, which occupy a large space in the battery pack, so that the battery pack has a large volume.

Disclosure of Invention

The application provides a temperature control component with heat dissipation function and heating function integration in an organic whole, reduces the volume of battery package. The application also provides a battery pack comprising the temperature control assembly.

In a first aspect, the present application provides a temperature control assembly. The temperature control assembly comprises:

the first heat-conducting plate is provided with a binding surface;

the second heat conducting plate comprises a flat part, a first protruding part and a second protruding part, the first protruding part and the second protruding part are connected with the flat part, the second protruding part and the first protruding part are arranged in a staggered mode, the flat part is attached to the attaching surface, the first protruding part protrudes towards one side far away from the attaching surface, a flow channel is formed between the first protruding part and the attaching surface, the flow channel is used for flowing of a cooling medium, and the second protruding part protrudes towards one side far away from the attaching surface, so that an accommodating cavity is formed between the second protruding part and the attaching surface;

and the heating element is contained in the containing cavity.

In one embodiment, the heating element includes a first surface and a second surface opposite to each other, the first surface is attached to the first heat-conducting plate, and the second surface faces the second heat-conducting plate and is spaced from the second heat-conducting plate.

In an embodiment, the control by temperature change subassembly still includes the heat preservation, the heat preservation accept in accept the chamber, the heat preservation is located the heating member with between the second heat-conducting plate, just the one side butt of heat preservation the heating member, another side butt the second heat-conducting plate.

In one embodiment, the temperature control assembly further comprises an adhesive layer, one surface of the adhesive layer is attached to the first heat conducting plate, and the other surface of the adhesive layer is attached to the heating element.

In one embodiment, the heating element includes a resistive layer and an insulating layer surrounding the resistive layer, and the resistive layer, the insulating layer and the first heat-conducting plate extend in the same direction.

In one embodiment, the number of the heating members is plural, and the plural heating members are arranged at intervals in the first direction; the temperature control component further comprises a connecting piece, wherein the connecting piece is located at the end part of the heating piece, and the heating piece is electrically connected with the connecting piece in a plurality.

In an embodiment, the flow channel includes a plurality of main flow channels and a plurality of side flow channels that are arranged along the first direction, each main flow channel is equipped with the side flow channel in the both sides that set up mutually back on the back, the side flow channel communicates two adjacent main flow channels, and arbitrary two adjacent two be equipped with at least one between the heating member the main flow channel.

In an embodiment, each of the main flow channels includes a first main flow channel and a second main flow channel arranged at an interval, a flow direction of the cooling medium in the first main flow channel is opposite to a flow direction of the cooling medium in the second main flow channel, an inlet of the cooling medium in the first main flow channel is different from an inlet of the cooling medium in the second main flow channel, and an outlet of the cooling medium in the first main flow channel is different from an outlet of the cooling medium in the second main flow channel.

In one embodiment, the inlet of the cooling medium in the first main flow channel and the inlet of the cooling medium in the second main flow channel are located on the same side of the heating element and are opposite to the connecting member.

In a second aspect, the present application further provides a battery pack. The battery pack comprises a battery and the temperature control assembly, wherein the temperature control assembly is arranged on the battery.

In this application embodiment, the heat-conducting plate is equipped with first bellying and the second bellying of crisscross setting, first bellying forms the runner that is used for acceping cooling medium with first heat-conducting plate, the chamber is acceptd in second bellying and first heat-conducting plate formation are used for holding the heating member, make the integrated heat dissipation function of temperature control component and heating function in an organic whole, and the runner that forms and accept the chamber sharing heat-conducting plate, thereby the volume of the temperature control component of integrated heat dissipation function and heating function in an organic whole has been reduced, the occupation space of temperature control component has been reduced.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of the temperature control assembly shown in FIG. 1;

FIG. 3 is an exploded view of the temperature control assembly of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the temperature control assembly of FIG. 2;

FIG. 5 is an enlarged schematic view of the structure of part A shown in FIG. 4;

FIG. 6 is a schematic cross-sectional view of the heating element shown in FIG. 3;

FIG. 7 is a schematic view of a portion of the temperature control assembly of FIG. 2;

FIG. 8 is a schematic view of the temperature control assembly of FIG. 2 at another angle;

FIG. 9 is a schematic view of the temperature control assembly of FIG. 2 at yet another angle;

FIG. 10 is a schematic view of a coolant inlet/outlet in the temperature control assembly of FIG. 2;

fig. 11 is a partial structural schematic of the structure shown in fig. 9.

Detailed Description

Technical solutions in embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. In the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present disclosure. The embodiment of the present application provides a battery pack 100. The battery pack 100 can be applied to a vehicle, for example, an electric vehicle to provide a power source for driving the electric vehicle. The battery pack 100 can also be applied to other electronic devices, such as: power generation equipment, unmanned underwater vehicle or recreational vehicle power supply and the like. In the embodiment of the present application, the battery pack 100 is described by way of example as applied to an electric vehicle.

The battery pack 100 includes a battery 101 and a temperature control assembly 102. The temperature control assembly 102 is mounted to the battery 101. The heat generated by the battery 101 is transferred to the temperature control component 102, and the temperature control component 102 disperses the heat, so as to prevent the local temperature of the battery 101 from being too high to affect the performance of the battery pack 100. The temperature control assembly 102 can also discharge heat generated by the battery 101 to the outside of the battery pack 100, so as to prevent the working performance of the battery pack 100 from being affected by an excessively high temperature inside the battery pack 100.

In one embodiment, the temperature control assembly 102 serves as a housing for the battery pack 100 to protect the batteries 101 therein. The temperature control assembly 102 can be a bottom plate, a cover plate, or a side plate of the battery pack 100, but is not limited thereto.

In this embodiment, the temperature control member 102 serves as a housing of the battery pack 100, such that the temperature control member 102 is in contact with the plurality of batteries 101 inside the battery pack 100, thereby allowing the temperature control member 102 to uniformly exchange heat with the respective batteries 101.

The temperature control assembly 102 is mounted on the surface of the battery 101 with the largest surface area. It can be understood that the larger the contact area of the temperature control assembly 102 and the battery 101, the better the heat exchange performance between the temperature control assembly 102 and the battery 101.

As shown in fig. 1, the battery 101 includes a top surface and a bottom surface opposite to each other, and four side surfaces between the top surface and the bottom surface. Wherein the area of the side surface is larger than that of the top surface or the bottom surface. The terminal post 104 of the battery 101 is led out from the top surface of the battery 101, and the temperature control assembly 102 is mounted on the side surface of the battery 101 and is mounted on the side surface with a large surface area.

The number of the batteries 101 is plural, and the plural batteries 101 are mounted on the tray 103. The temperature control assembly 102 and the tray 103 are respectively located on two opposite sides of the battery pack 100. It can be understood that the temperature control assembly 102 and the tray 103 are respectively in contact with the side of the battery 101 opposite to the side with a larger area.

In the embodiment of the present application, the temperature control element 102 is located on a side of the battery 101 with a larger area, so as to increase the contact area between the temperature control element 102 and the battery 101, thereby facilitating to improve the heat exchange performance between the temperature control element 102 and the battery 101. The temperature control assembly 102 and the tray 103 are respectively located on two opposite sides of the battery pack 100, so that the temperature control assembly 102 can serve as an upper cover plate for protecting the battery pack 100, the temperature control assembly 102 and the upper cover plate of the battery pack 100 are multiplexed, and the weight of the battery pack 100 is reduced.

In the embodiment of the present application, the temperature control assembly 102 is described as an example of an upper cover plate of the battery pack 100. In other embodiments, the temperature control assembly 102 can be other structural members of the battery pack 100, and the application is not limited thereto.

Referring to fig. 2 to 4, fig. 2 is a schematic structural diagram of the temperature control element 102 shown in fig. 1; FIG. 3 is a schematic diagram of an exploded view of the temperature control assembly 102 of FIG. 2; fig. 4 is a schematic cross-sectional view of the temperature control assembly 102 shown in fig. 2. The temperature control assembly 102 comprises a thermally conductive plate 10. The heat conducting plate 10 is attached to the battery 101 and is used for diffusing heat generated by the battery 101 through the heat conducting plate 10, so that the influence of the local over-high temperature of the battery 101 on the working performance of the battery pack 100 is avoided. The heat conducting plate 10 is made of a material with good heat conducting property, such as aluminum alloy with good heat conducting property, so that the heat conducting plate 10 has a temperature equalizing function.

The heat-conducting plate 10 includes a first heat-conducting plate 11 and a second heat-conducting plate 12. The first heat-conducting plate 11 is provided with a joint surface 110. The bonding surface 110 is bonded to the second heat-conducting plate 12. It will be appreciated that the side of the first heat-conducting plate 11 facing the second heat-conducting plate 12 is the attachment surface 110. In one embodiment, the first heat conducting plate 11 is in a flat plate shape, such that one surface of the first heat conducting plate 11 is tightly attached to the battery 101, and the other surface is effectively attached to the second heat conducting plate 12, thereby facilitating heat exchange between the battery 101 and the heat conducting plate 10 to improve the heat dissipation effect of the temperature control element 102.

The second heat-conducting plate 12 includes a flat portion 121 and a protrusion 122 connected to the flat portion 121. The flat portion 121 is attached to the attachment surface 110. The attaching surface 110 is attached to the flat portion 121, so that the first heat-conducting plate 11 contacts the second heat-conducting plate 12. The protrusion 122 protrudes from the attachment surface 110 toward a side away from the first heat conduction plate 11. It will be appreciated that a gap is formed between the boss 122 and the first heat-conducting plate 11. The flat portion 121 is attached to the first heat-conducting plate 11, and the protruding portion 122 is spaced apart from the first heat-conducting plate 11.

Wherein the boss 122 includes a first boss 1221. The first protruding portion 1221 protrudes toward a side away from the attachment surface 110 to form a flow channel 13 between the first protruding portion 1221 and the attachment surface 110. It will be appreciated that the first raised portion 1221 and the first heat conduction plate 11 enclose the flow passage 13. The first projecting portion 1221 and the first heat conduction plate 11 corresponding to the first projecting portion 1221 are wall surfaces of the flow passage 13. The flow channel 13 is for flowing a cooling medium.

It can be understood that the cooling medium flows in the flow channel 13 formed by the first heat conducting plate 11 and the second heat conducting plate 12, and can take away part of the heat generated by the first heat conducting plate 11 and the second heat conducting plate 12, and the heat generated by the battery 101 is transferred to the heat conducting plate 10, so that the flowing cooling medium takes away part of the heat generated by the battery 101, and the heat dissipation performance of the temperature control assembly 102 is improved. The cooling medium may be a gas medium or a liquid medium. That is, the heat dissipation of the temperature control assembly 102 may be liquid cooling, air cooling, or direct cooling.

In one embodiment, the cooling medium is gaseous at ambient temperature. The cooling medium may be, but is not limited to, a refrigerant with a high heat transfer coefficient, such as: r134a, R410a, R407C or R22. It will be appreciated that in this embodiment, the heat dissipation of the temperature control assembly 102 is a direct cooling system.

In this embodiment, the temperature control assembly 102 dissipates heat to the battery 101 through the cooling medium with a high heat transfer coefficient, which not only can improve the heat dissipation effect of the temperature control assembly 102, but also avoids the accident of insulation short circuit of the battery pack 100 caused by leakage of the cooling medium because the cooling medium is gaseous in the normal temperature environment.

When the temperature control assembly 102 adopts a direct cooling heat dissipation mode, the temperature control assembly 102 can establish continuity with an air conditioning system in the electric vehicle, so that an evaporator of the air conditioning system is applied to the temperature control assembly 102, the integration level of the electric vehicle is improved, a cooling medium (refrigerant) is evaporated in the evaporator, the heat of the battery 101 is taken away quickly and efficiently, and the heat dissipation effect of the temperature control assembly 102 is effectively improved.

Referring to fig. 3 and 4 together, fig. 4 is a cross-sectional view of the temperature control element 102 shown in fig. 3. In one embodiment, the temperature control assembly 102 further includes a heating element 20. The heating member 20 is located between the first heat-conducting plate 11 and the boss 122. The heating member 20 is used for heating the battery 101 when the temperature of the battery 101 is lower than a preset temperature, so that the battery 101 is at a proper temperature, and the phenomenon that the working performance of the battery 101 is affected due to the fact that the temperature of the battery 101 is too low is avoided.

The boss 122 also includes a second boss 1222. The second protrusions 1222 are staggered from the first protrusions 1221. The second protrusion 1222 protrudes toward a side away from the abutting surface 110 to form a receiving cavity 14 between the second protrusion 1222 and the abutting surface. The heating member 20 is received in the receiving cavity 14. The first protruding portion 1221 and the second protruding portion 1222 are integrally formed, so that the manufacturing process of the second heat conduction plate 12 is simplified.

It will be appreciated that the heating element 20 is located within the receiving cavity 14 defined by the second raised portion 1222 and the first conductive plate 11. The accommodating cavity 14 and the flow channel 13 share the first heat conducting plate 11 and the second heat conducting plate 12, so that the temperature control element 102 integrates the heat dissipation function and the heating function.

In the embodiment of the present application, the heat conducting plate 10 is provided with the first protruding portion 1221 and the second protruding portion 1222 which are staggered, the first protruding portion 1221 and the first heat conducting plate 11 form the flow channel 13 for accommodating the cooling medium, the second protruding portion 1222 and the first heat conducting plate 11 form the accommodating cavity 14 for accommodating the heating element 20, so that the temperature control component 102 integrates the heat dissipation function and the heating function, and the formed flow channel 13 and the accommodating cavity 14 share the heat conducting plate 10, thereby reducing the volume of the temperature control component 102 integrating the heat dissipation function and the heating function, and reducing the occupied space of the temperature control component 102. It will be appreciated that the heating elements 20 are staggered with respect to the flow channels 13 so that the heat dissipation and heating of the temperature control assembly 102 can be operated independently.

It will be appreciated that the heat dissipation function and the heating function of the temperature control assembly 102 are interleaved. For example, when an electric vehicle to which the battery pack 100 is applied is in a cold environment, and the temperature of the battery pack 100 is less than or equal to a first preset temperature while the battery pack 100 is being charged, the heating member 20 heats the battery 101 to bring the battery 101 to an appropriate temperature, thereby improving the charging efficiency of the battery pack 100. When the electric vehicle using the battery pack 100 runs, that is, the battery pack 100 is in a working state, the battery 101 generates heat during working to continuously raise the temperature of the battery 101, and when the temperature of the battery 101 is greater than or equal to a second preset temperature, the cooling medium flows into the space between the first heat conduction plate 11 and the second heat conduction plate 12 through the flow channel 13 to take away part of the heat, so that the temperature of the battery 101 is reduced, the battery 101 is ensured to be in a proper temperature environment, and the service life of the battery pack 100 is ensured.

The first preset temperature and the second preset temperature can be set according to requirements, for example, the first preset temperature is less than or equal to 0 degree, and the second preset temperature is greater than or equal to 40 degrees. When the heating element 20 heats the battery 101 to a certain temperature, for example, 15 degrees, the heating element 20 stops heating, so as to avoid the battery 101 from generating heat in the subsequent normal operation due to the higher temperature of the battery 101, which leads to the overhigh temperature of the battery 101.

Referring to fig. 4 and 5, fig. 5 is an enlarged schematic structural diagram of a portion a shown in fig. 4. The heating element 20 includes a first side 201 and a second side 202 that are disposed opposite one another. The first surface 201 is attached to the first heat conduction plate 11. Second face 202 faces second heat-conducting plate 12 and is spaced from second heat-conducting plate 12.

In the embodiment of the present application, on the one hand, the first surface 201 of the heating member 20 is attached to the first heat conducting plate 11, so that the heating member 20 contacts the first heat conducting plate 11, the heat generated by the heating member 20 can be rapidly transferred to the first heat conducting plate 11, and thus the heat can be effectively transferred to the battery 101, and the heating performance of the temperature control component 102 is improved.

On the other hand, the second surface 202 of the heating member 20 is spaced apart from the second heat-conducting plate 12, so that the heating member 20 is spaced apart from the second heat-conducting plate 12, and the heat generated by the heating member 20 is prevented from being directly transferred to the second heat-conducting plate 12 away from the battery 101, and the heat generated by the heating member 20 is prevented from being dissipated, thereby improving the utilization rate of the heat generated by the heating member 20. It can be understood that, since the second heat-conducting plate 12 is located at a side far away from the battery 101, the heat on the second heat-conducting plate 12 is difficult to transfer to the battery 101, and therefore, the spacing between the heating member 20 and the second heat-conducting plate 12 is beneficial to improving the heating effect of the heating member 20 on the battery 101.

As shown in fig. 5, the temperature control assembly 102 further includes an insulating layer 30. The insulating layer 30 is accommodated in the accommodating cavity 14. Insulating layer 30 is positioned between heating element 20 and second conductive plate 12. It will be appreciated that insulating layer 30 separates heating element 20 from second conductive plate 12.

In the embodiment of the present application, the thermal insulation layer 30 is made of a material with a small thermal conductivity coefficient, that is, the thermal resistance between the heating element 20 and the second heat-conducting plate 12 is large, so that the heat generated by the heating element 20 is difficult to be transferred to the second heat-conducting plate 12, and the utilization rate of the heat generated by the heating element 20 is improved. The insulation layer 30 may be, but not limited to, insulation cotton, such as aerogel or rubber-plastic cotton. In other embodiments, the insulation layer 30 can also be filled with a gas, such as air or a noble gas. That is, in other embodiments, a gap is formed between heating element 20 and second conductive plate 12, which is insulating layer 30. In the embodiment of the present application, the insulating layer 30 is described as an example of a solid structure.

Further, one surface of the insulating layer 30 abuts against the heating member 20, and the other surface abuts against the second heat conduction plate 12. It will be appreciated that in this embodiment, a solid insulating structure is filled between the heating element 20 and the second heat-conducting plate 12 such that one side of the insulating layer 30 abuts the second heat-conducting plate 12 and the other side abuts the heating element 20.

In this embodiment, one side butt heating member 20 of heat preservation 30, another side butt second heat-conducting plate 12 for heat preservation 30 compresses tightly heating member 20, can ensure that heating member 20 closely laminates in first heat-conducting plate 11, has avoided heating member 20 local to break away from first heat-conducting plate 11, and leads to this local dry combustion method of separating from and because of the high and blow of intensification, thereby has improved the quality of control by temperature change subassembly 102.

Further, with continued reference to fig. 5, the temperature control element 102 further includes an adhesive layer 40. One surface of the adhesive layer 40 is attached to the first heat conduction plate 11, and the other surface is attached to the heating member 20. That is, the adhesive layer 40 is located between the first heat-conducting plate 11 and the heating member 20. It will be appreciated that the heating element 20 is secured to the first conductive plate 11 by an adhesive layer 40. The adhesive layer 40 may be, but is not limited to, a back adhesive.

In the embodiment of the present application, the heating member 20 is fixed on the first heat conducting plate 11 by the adhesive layer 40, so as to prevent the heating member 20 from partially separating from the first heat conducting plate 11, which results in local dry burning in the separated area and burnout due to too high temperature rise, thereby further improving the quality of the temperature control component 102.

With continued reference to fig. 6, fig. 6 is a schematic cross-sectional view of the heating element 20 shown in fig. 3. In one embodiment, the heating element 20 includes a resistive layer 21 and an insulating layer 22 disposed around the resistive layer 21. The resistive layer 21, the insulating layer 22, and the first heat conduction plate 11 extend in the same direction.

As can be appreciated, in the present embodiment, the heating member 20 generates heat by passing current through the resistive layer 21. The insulating layer 22 is arranged around the resistive layer 21 to wrap the resistive layer 21, so that the resistive layer 21 is prevented from being exposed outside and potential safety hazards are avoided.

Further, referring to fig. 3 and 7 together, fig. 7 is a partial structural schematic view of the temperature control element 102 shown in fig. 2. The heating member 20 is plural in number. The plurality of heating members 20 are arranged at intervals in the first direction. As shown in fig. 3 or fig. 7, the first direction is identified by the X direction. It is understood that the heating member 20 is plural in number, the second protrusion 1222 is plural in number, and one second protrusion 1222 corresponds to one heating member 20. The temperature control assembly 102 also includes a connector 50. The connector 50 is located at an end of the heating member 20 and electrically connects a plurality of heating members 20.

In the embodiment of the present application, the temperature control assembly 102 includes a plurality of heating members 20 arranged at intervals, and the plurality of heating members 20 arranged at intervals are uniformly and intermittently distributed on the heat conducting plate 10, so as to avoid the waste of raw materials caused by the fact that the heat conducting plate 10 is fully paved with the heating members 20. Wherein, the heat generated by the plurality of heating members 20 arranged at intervals can be effectively transferred to the first heat-conducting plate 11 at the periphery of the heating member 20, so that the heat of the first heat-conducting plate 11 is uniformly distributed, thereby uniformly heating the battery 101.

Referring to fig. 8, fig. 8 is a schematic structural view of the temperature control assembly 102 shown in fig. 2 at another angle. In one embodiment, the flow channel 13 includes a plurality of side flow channels 31 and a plurality of main flow channels 32 arranged in a first direction. The two sides of each main flow channel 32 which are arranged back to back are provided with side flow channels 31. The side flow channels 31 communicate any adjacent two of the main flow channels 32. Wherein the primary flow channel 32 extends in a second direction. The second direction is arranged to intersect the first direction. The second direction may be, but is not limited to, perpendicular to the first direction. As shown in fig. 2 or fig. 8, the first direction is indicated by the X direction and the second direction is indicated by the Y direction. In the present embodiment, the extending direction of the main flow channel 32 is the same as the extending direction of the heat-conducting plate 10. In other embodiments, the extending direction of the main flow channel 32 may be different from the extending direction of the heat-conducting plate 10, and the present application is not limited thereto.

It will be understood that one side runner 31 and the adjacent two main runners 32 connected to the side runner 31 form a "U" shaped runner. The plurality of main flow channels 32 and the plurality of side flow channels 31 form the curved flow channels 13 in a winding and folding manner, so as to increase the extension path of the flow channels 13 in the effective area, thereby improving the utilization rate of the cooling medium and improving the heat dissipation effect of the temperature control assembly 102.

In one embodiment, at least one main channel 32 is provided between any two adjacent heating members 20. As shown in fig. 8, in the embodiment of the present application, two main flow channels 32 are provided between any two adjacent heating members 20 for example, and in other embodiments, other numbers of main flow channels 32 can be provided between any two heating members 20, which is not limited in the present application.

In this embodiment, at least one main runner 32 is arranged between any two adjacent heating members 20, so that the main runner 32 is embedded between the heating members 20 arranged at a plurality of intervals, the areas of the first heat-conducting plate 11 and the second heat-conducting plate 12 are fully utilized, and the main runner 32 and the heating members 20 are uniformly distributed on the heat-conducting plate 10, so that the temperature control component and the battery 101 are integrally and uniformly subjected to heat exchange, and the uniformity of the overall temperature of the battery 101 is favorably ensured.

Further, with continued reference to fig. 8-10, fig. 9 is a schematic view of the temperature control element 102 shown in fig. 2 at a further angle; fig. 10 is a schematic view of a cooling medium inlet/outlet in the temperature control module 102 shown in fig. 2. In one embodiment, the temperature control assembly 120 further includes an inlet pipe 81 and an outlet pipe 82. The cooling medium enters from one end of the flow channel 13 through the inlet pipe 81, flows through the flow channel 13, and is discharged from the other end of the flow channel 13 to the outlet pipe 82. Wherein the flow passage 13 includes a first flow passage 131 and a second flow passage 132. The first channel 131 is provided at both ends thereof with a first cooling medium inlet 61 and a first cooling medium outlet 62, respectively. The second flow passage 132 is provided at both ends thereof with a second cooling medium inlet 63 and a second cooling medium outlet 64, respectively.

The first cooling medium inlet 61 and the second cooling medium inlet 63 are both communicated with the inlet pipe 81, the first cooling medium outlet 62 and the second cooling medium outlet 64 are both communicated with the outlet pipe 82, and the direction of the first cooling medium inlet 61 toward the outlet end is opposite to the direction of the second cooling medium inlet 63 toward the outlet end. The direction from the first cooling medium inlet 61 to the first cooling medium outlet 62 is the flow direction of the cooling medium in the first flow channel 131. The direction of the second cooling medium inlet 63 to the second cooling medium outlet 64 is the flow direction of the cooling medium in the second flow channel 132. The first cooling medium inlet 61 is different from the second cooling medium inlet 63.

As shown in fig. 9, the second cooling medium inlet 63 is different from the first cooling medium inlet 61. A part of the cooling medium flows into the first flow channel 131 from the first cooling medium inlet 61 and finally flows out from the first cooling medium outlet 62. Another part of the cooling medium flows into the second flow passage 132 from the second cooling medium inlet 63 and finally flows out from the second cooling medium outlet 64.

In the embodiment of the present application, the flow directions of the cooling mediums in the first flow channel 131 and the second flow channel 132 that are arranged in parallel are opposite, that is, the flow channel 13 formed by the heat conducting plate 10 is a bidirectional composite flow channel, so that the cooling medium flowing toward the first cooling medium outlet 62 is parallel to the cooling medium flowing out from the second cooling medium inlet 63, the temperature of the cooling medium near the outlet end is prevented from being higher than the temperature of the cooling medium near the inlet end, the poor heat dissipation effect of the partial region of the battery 101 is prevented, and the heat dissipation of the temperature control component 102 is uniform.

The first flow channel 131 and the second flow channel 132 are spaced and arranged in parallel. It is understood that the first flow channel 131 and the second flow channel 132 are similar or identical in curved shape and extend in substantially the same direction, so that the first flow channel 131 and the second flow channel 132 are arranged in parallel. It will be appreciated that the first flow channels 131 are arranged side-by-side with the flow direction of the cooling medium in the second flow channels 132 being opposite.

In one embodiment, the temperature control assembly 102 further includes a shunt tube 71 and a manifold 72 disposed at intervals. The bypass pipe 71 communicates with the first cooling medium inlet 61 and the second cooling medium inlet 63. The manifold 72 communicates with the second cooling medium inlet 63 and the second cooling medium outlet 64.

In one embodiment, the bypass pipe 71 is connected to the inlet pipe 81 so that the cooling medium is distributed to the first medium inlet 61 and the second medium inlet 63 through the bypass pipe 71. The manifold 72 is connected to the outlet pipe 82 so that the cooling medium is discharged from the outlet pipe 64 through the manifold 72 from the first cooling medium outlet 62 and the second cooling medium outlet 64. Wherein the inlet pipe 81 is located on the side of the shunt pipe 71 remote from the first cooling medium inlet 61. The outlet pipe 82 is located on a side of the manifold 72 remote from the first cooling medium outlet 62.

It is understood that the cooling medium flows from the inlet pipe 81 through the bypass pipe 71 into the first cooling medium inlet 61 and the second cooling medium inlet 63, and then flows into the first flow channel 131 and the second flow channel 132. The cooling medium flowing out of the first cooling medium outlet 62 and the cooling medium flowing out of the second cooling medium outlet 64 finally converge to the outlet pipe 82 via the manifold 72.

In the embodiment of the present application, the first cooling medium inlet 61 and the second cooling medium inlet 63 are communicated through the diversion pipe 71, and the first cooling medium outlet 62 and the second cooling medium outlet 64 are converged through the confluence pipe 72, so that the double flow channel 13 formed by the first flow channel 131 and the second flow channel 132 can be provided with only one inlet pipe 81 and one outlet pipe 82, the first cooling medium inlet 61 and the second cooling medium inlet 63 with different flow directions are formed through the diversion pipe 71, and the cooling liquid flowing through the first cooling medium outlet 62 and the second cooling medium outlet 64 is converged through the confluence pipe 72, thereby avoiding the first flow channel 131 and the second flow channel 132 being provided with the inlet pipe and the outlet pipe respectively, resulting in the temperature control assembly 102 being provided with two inlet pipes 81 and two outlet pipes 82, and simplifying the design of the temperature control assembly 102.

Further, the first cooling medium inlet 61 and the second cooling medium inlet 63 are located on the same side of the heating member 20, and are disposed opposite to the connecting member 50. The first cooling medium outlet 62 is located on the same side of the heating member 20 as the first cooling medium inlet 61. That is, the first cooling medium inlet 61, the first cooling medium outlet 62, the second cooling medium inlet 63, and the second cooling medium outlet 64 are located on the same side of the heating member 20, and are disposed opposite to the connecting member 50.

It will be appreciated that the shunt tubes 71 and the manifold 72 are on the same side of the thermally conductive plate 10. Wherein the temperature control assembly 102 further comprises a diverter trough 90. The diversion channel 90 and the diversion pipe 71 are located on the same side of the heat conduction plate 10, and the diversion pipe 71 and the collecting pipe 72 are both accommodated in the diversion channel 90.

In the embodiment of the present application, the dividing tube 71 and the collecting tube 72 are located on the same side of the heating element 20, and are disposed opposite to the connecting element 50, that is, the cooling medium inlet and the cooling medium outlet are disposed opposite to the connecting element 50 connected to the plurality of heating elements 20, so that the resistive layers 21 in the plurality of heating elements 20 can be led out from the same side of the heat conducting plate 10, and the first flow channel 131 or the second flow channel 132 is prevented from blocking the leading-out of the resistive layers 21 in the heating element 20, thereby facilitating the connecting element 50 to be electrically connected to the plurality of heating elements 20 disposed at intervals at the same time.

With continued reference to fig. 9-11, in one embodiment, the first cooling medium inlet 61, the second cooling medium outlet 64, the first cooling medium outlet 62, and the second cooling medium inlet 63 are sequentially disposed along the first direction. As shown in fig. 11, the branch pipes 71 and the manifold pipe 72 have two curved wound arcs, and the second cooling medium inlet 63 of the branch pipe 71 is located between the first cooling medium outlet 64 and the second cooling medium outlet 64 of the manifold pipe 72.

In the embodiment of the present application, the first cooling medium inlet 61, the second cooling medium outlet 64, the first cooling medium outlet 62, and the second cooling medium inlet 63 are sequentially disposed, such that the first cooling medium inlet 61 of the first flow channel 131 is close to the second cooling medium outlet 64 of the second flow channel 132, and the second cooling medium inlet 63 of the second flow channel 132 is close to the first cooling medium outlet 62 of the first flow channel 131, thereby simplifying the arrangement of the first flow channel 131 and the second flow channel 132 which are disposed in parallel.

The first flow channel 131 includes a first side flow channel 311 and a plurality of first main flow channels 312 arranged at intervals along a first direction. The first side flow passage 311 communicates any adjacent two first main flow passages 312. The second flow channel 132 includes a second side flow channel 321 and a plurality of second main flow channels 322 arranged at intervals along the first direction. The second side flow passage 321 communicates any adjacent two of the second main flow passages 322. The flow direction of the cooling medium in the first primary flow passage 312 is opposite to the flow direction of the cooling medium in the second primary flow passage 322. It is understood that the main flow passage 32 includes a first main flow passage 312 and a second main flow passage 322 disposed in parallel. The side flow passage 31 includes a first side flow passage 311 and a second side flow passage 321 arranged in parallel.

It can be understood that one first side flow passage 311 and two adjacent first main flow passages 312 connected to the first side flow passage 311 form a "U" shaped flow passage. The plurality of first main flow channels 312 and the plurality of first side flow channels 311 form the curved first flow channels 131 in a winding-folding manner, so as to increase the extension path of the first flow channels 131 in the effective area, thereby improving the utilization rate of the cooling medium and improving the heat dissipation effect of the temperature control assembly 102.

Wherein, there is at least one main flow channel 32 between any two adjacent heating members 20, which means that there is at least one first main flow channel 312 and at least one second main flow channel 322 between any two adjacent heating members 20. In this embodiment, at least one first main flow channel 312 and at least one second main flow channel 322 are disposed between any two adjacent heating members 20, so that the first main flow channel 312, the second main flow channel 322 and the heating members 20 are uniformly distributed on the heat conducting plate 10, and the temperature control component and the battery 101 are uniformly heat-exchanged integrally, thereby being beneficial to ensuring the uniformity of the overall temperature of the battery 101.

Further, with reference to fig. 8 to 10, in one embodiment, the first flow channel 131 further includes a first upstream flow channel 313 and a first downstream flow channel 314. The first upstream flow passage 313 connects the first cooling medium inlet 61. The first downstream flow passage 314 connects the first cooling medium outlet 62. The second flow passage 132 includes a second upstream flow passage 323 and a second downstream flow passage 324. The second upstream flow passage 323 connects the second cooling medium inlet 63. The second downstream flow passage 324 connects the second cooling medium outlet 64. The first upstream flow channel 313 and the second upstream flow channel 323 are respectively located at two opposite sides of the dividing tube 71. The first downstream flow channel 314 and the second downstream flow channel 324 are respectively located on two opposite sides of the manifold 72.

It is understood that the first upstream flow channel 313 and the first downstream flow channel 314 are respectively located upstream and downstream of the plurality of first main flow channels 312. The second upstream flow passage 323 and the second downstream flow passage 324 are respectively located upstream and downstream of the plurality of second main flow passages 322. As shown in fig. 8, in the embodiment of the present invention, the dividing pipe 71 and the collecting pipe 72 are located in the middle portion of the heat conducting plate 10, the first upstream flow passage 313 and the second downstream flow passage 324 are located in the upper half portion of the dividing pipe 71, and the first downstream flow passage 314 and the second upstream flow passage 323 are located in the lower half portion of the dividing pipe 71.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the methods and their core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.