Cooling plate and double-layer module unit

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a cooling plate and a double-layer module unit.The cooling plate comprises a first plate part and a second plate part, the first plate part is used for being connected with one layer of battery cell module, the second plate part is used for being connected with the other layer of battery cell module, and the first plate part and the second plate part are connected in an overlapped mode; a first flow channel is formed in the first plate part, a second flow channel is formed in the second plate part, the first flow channel protrudes out of the first plate part in the direction away from the second plate part, and the second flow channel protrudes out of the second plate part in the direction away from the first plate part. The utility model aims to provide a cooling plate and a double-layer module unit in order to solve at least one technical problem related in the background technology.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a cooling plate and a double-layer module unit. Background Art

[0002] The cooling plate structure of the double-layer module in the prior art includes a large flat plate structure that is stacked and connected to each other and a flow channel plate with a flow channel. The flow channel plate is connected to one battery cell module through thermal conductive adhesive, and the large flat plate is connected to another battery cell module through thermal conductive adhesive. Since a flow channel is formed on the flow channel plate, the air avoidance structure formed between the flow channels when connected to the battery cell module also needs to be filled with thermal conductive adhesive, which makes one side of the flow channel plate covered with more thermal conductive adhesive than the large flat plate side, resulting in uneven cooling of the large flat plate side and the flow channel plate of the cooling plate. Utility Model Content

[0003] The purpose of the present application is to provide a cooling plate and a double-layer module unit in view of at least one technical problem involved in the background technology.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] One aspect of the present application provides a cooling plate, including a first plate portion and a second plate portion, the first plate portion being used to connect to a layer of battery cell modules, the second plate portion being used to connect to another layer of battery cell modules, the first plate portion and the second plate portion being overlapped and connected to each other, a first flow channel being formed on the first plate portion, a second flow channel being formed on the second plate portion, the first flow channel protruding from the first plate portion in a direction away from the second plate portion, and the second flow channel protruding from the second plate portion in a direction away from the first plate portion.

[0006] Optionally, a plurality of first flow channels are formed on the first plate portion, and a plurality of second flow channels are formed on the second plate portion, and the number of the first flow channels is the same as the number of the second flow channels.

[0007] The beneficial effect of this technical solution is that: since the number of the first flow channels is the same as the number of the second flow channels, the amount of thermal conductive adhesive set on the first plate portion is closer to the amount of thermal conductive adhesive set on the second plate portion, and the cooling effect of the cooling plate on the two battery modules is also closer.

[0008] Optionally, the length of the first flow channel is the same as the length of the second flow channel, the width of the first flow channel is the same as the width of the second flow channel, and / or the depth of the first flow channel is the same as the depth of the second flow channel.

[0009] The beneficial effect of this technical solution is that it makes the size of each first flow channel the same as that of a second flow channel, the area occupied by each first flow channel on the first plate portion is close to or even the same as the area occupied by each second flow channel on the second plate portion, so that the amount and thickness of the thermal conductive adhesive set on the first plate portion are close to or the same as the amount and thickness of the thermal conductive adhesive set on the second plate portion, making the thermal conductivity effect of the cooling plate on the two battery core modules closer.

[0010] Optionally, the length directions of the first flow channels are parallel to each other, the length directions of the second flow channels are parallel to each other, the length direction of the first flow channel is parallel to the length direction of the second flow channel, and the first flow channels and the second flow channels are staggered in the width direction of the first flow channel.

[0011] The beneficial effect of this technical solution is that: in this way, the gaps between the adjacent first flow channels and the second flow channels are also roughly the same, so that the distribution of the thermal conductive adhesive on the first plate portion and the thermal conductive adhesive on the second plate portion is roughly the same and relatively uniform, so that the cooling effect of the cooling plate on the two battery core modules is more uniform.

[0012] Optionally, the first flow channels are interconnected, and the second flow channels are interconnected.

[0013] The beneficial effect of this technical solution is that: by interconnecting the first flow channels, the heat can be balanced between the first flow channels, so that the battery module can dissipate heat more evenly; by interconnecting the second flow channels, the heat can be balanced between the second flow channels, so that another battery module can dissipate heat more evenly.

[0014] Optionally, the first flow channel is communicated with the second flow channel.

[0015] The beneficial effect of this technical solution is that it allows heat to be exchanged between each first flow channel and each second flow channel through the circulation of coolant, so that the cooling effect of the cooling plate on the two battery core modules is more uniform.

[0016] Optionally, the cooling plate provided in the present application includes two flow channel areas arranged in the width direction of the first flow channel, and the two flow channel areas are symmetrically arranged with a symmetry axis parallel to the length direction of the first flow channel.

[0017] The beneficial effect of this technical solution is that it makes the arrangement of the first flow channel and the second flow channel in one flow channel area the same as the arrangement of the first flow channel and the second flow channel in another flow channel area. In this way, the heat dissipation capacity of the two flow channel areas is almost the same, so that the heat exchange effects at different positions of the same battery cell module also tend to be the same, thereby improving the uniformity of cooling the battery cell module.

[0018] Optionally, a flow channel liquid inlet and a flow channel liquid outlet are further provided on the cooling plate, and the positions of the flow channel liquid inlet and the flow channel liquid outlet are both located at the junction of the two flow channel areas.

[0019] The beneficial effect of this technical solution is that the positions where the coolant flows in and out are both located at the junction of the two flow channel areas, and the distance traveled by the coolant is equivalent to half of the total length of each flow channel. Compared with making the distance traveled by the coolant the sum of the lengths of each flow channel, the heat exchange efficiency of the coolant is higher and the heat dissipation speed of the battery module is faster.

[0020] Optionally, four first flow channels are formed on the first plate portion, and four second flow channels are formed on the second plate portion, one of the two flow channel areas is a first flow channel area, and the other flow channel area is a second flow channel area, two first flow channels and two second flow channels are both located in the first flow channel area, and in the first flow channel area, from a position close to the second flow channel area to a position far from the second flow channel area, one first flow channel, one second flow channel, another first flow channel, and another second flow channel are sequentially arranged and sequentially connected to form a serpentine flow channel,

[0021] The two first flow channels and the two second flow channels are both located in the second flow channel area. In the second flow channel area, one first flow channel, one second flow channel, another first flow channel and another second flow channel are sequentially arranged and sequentially connected to form a serpentine flow channel from a position close to the first flow channel area to a position far from the first flow channel area.

[0022] The two innermost first flow channels of each of the first flow channels on the cooling plate are connected to each other, and a third flow channel is formed on the second plate portion, and the two outermost second flow channels of each of the second flow channels on the cooling plate are connected to each other through the third flow channel.

[0023] Another aspect of the present application provides a double-layer module unit, including two battery cell modules and a cooling plate provided in the present application, one of the battery cell modules is connected to the first plate portion via thermal conductive adhesive, and the other battery cell module is connected to the second plate portion via thermal conductive adhesive.

[0024] The technical solution provided by this application can achieve at least one of the following beneficial effects:

[0025] The cooling plate and double-layer module unit provided in the present application have a first flow channel protruding from the first plate portion formed on the first plate portion, and a second flow channel protruding from the second plate portion formed on the second plate portion. When the cooling plate is connected to the two battery core modules through thermal conductive adhesive, compared with using a large flat plate on the first plate portion or the second plate portion, the amount of thermal conductive adhesive used on the first plate portion is closer to the amount of thermal conductive adhesive used on the second plate portion, thereby making the cooling effect of the cooling plate on the two battery core modules relatively uniform.

[0026] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of a three-dimensional structure at one angle of an implementation manner of a cooling plate provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of a three-dimensional structure from another angle of an implementation manner of a cooling plate provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of the three-dimensional structure at one angle of an implementation manner of a double-layer module unit provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] 01. Liquid inlet of flow channel; 02. Liquid outlet of flow channel;

[0033] 03. First plate portion; 04. First flow channel;

[0034] 05. The third flow channel; 06. The second plate portion;

[0035] 07. Second flow channel; 100. Cooling plate;

[0036] 200. Battery cell module. DETAILED DESCRIPTION

[0037] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 this application can be understood according to specific circumstances.

[0040] like Figure 1 to Figure 2 As shown, one aspect of the present application provides a cooling plate 100, including a first plate portion 03 and a second plate portion 06, the first plate portion 03 being used to connect to a layer of battery cell modules 200, the second plate portion 06 being used to connect to another layer of battery cell modules 200, the first plate portion 03 and the second plate portion 06 being overlapped and connected to each other, a first flow channel 04 being formed on the first plate portion 03, a second flow channel 07 being formed on the second plate portion 06, the first flow channel 04 protruding from the first plate portion 03 in a direction away from the second plate portion 06, and the second flow channel 07 protruding from the second plate portion 06 in a direction away from the first plate portion 03.

[0041] The cooling plate 100 provided in the present application has a first flow channel 04 protruding from the first plate portion 03 formed on the first plate portion 03, and a second flow channel 07 protruding from the second plate portion 06 formed on the second plate portion 06. When the cooling plate 100 is connected to the two battery core modules 200 through thermal conductive adhesive, compared with using a large flat plate for the first plate portion 03 or the second plate portion 06, the amount of thermal conductive adhesive used on the first plate portion 03 is closer to the amount of thermal conductive adhesive used on the second plate portion 06, thereby making the cooling effect of the cooling plate 100 on the two battery core modules 200 relatively uniform.

[0042] Optionally, a plurality of first flow channels 04 are formed on the first plate portion 03, and a plurality of second flow channels 07 are formed on the second plate portion 06, and the number of the first flow channels 04 is the same as the number of the second flow channels 07. Since the number of the first flow channels 04 is the same as the number of the second flow channels 07, the amount of the thermal conductive adhesive provided on the first plate portion 03 is closer to the amount of the thermal conductive adhesive provided on the second plate portion 06, and the cooling effect of the cooling plate 100 on the two battery core modules 200 is also closer. Of course, it is also possible to form only one first flow channel 04 on the first plate portion 03 and only one second flow channel 07 on the second plate portion 06.

[0043] Optionally, the length of the first flow channel 04 is the same as the length of the second flow channel 07, the width of the first flow channel 04 is the same as the width of the second flow channel 07, and / or the depth of the first flow channel 04 is the same as the depth of the second flow channel 07. It can be understood that the length direction and width direction of the first flow channel 04 are parallel to the first plate portion 03, the depth direction of the first flow channel 04 is perpendicular to the first plate portion 03, the length direction and width direction of the second flow channel 07 are parallel to the second plate portion 06, and the depth direction of the second flow channel 07 is perpendicular to the second plate portion 06. This makes each first flow channel 04 have the same size as a second flow channel 07, the area occupied by each first flow channel 04 on the first plate portion 03 is close to or even the same as the area occupied by each second flow channel 07 on the second plate portion 06, so that the amount and thickness of the thermal conductive adhesive set on the first plate portion 03 are close to or the same as the amount and thickness of the thermal conductive adhesive set on the second plate portion 06, so that the heat conduction effect of the cooling plate 100 on the two battery modules 200 is closer.

[0044] Optionally, the length directions of the first flow channels 04 are parallel to each other, the length directions of the second flow channels 07 are parallel to each other, the length direction of the first flow channels 04 is parallel to the length direction of the second flow channels 07, and the first flow channels 04 and the second flow channels 07 are arranged alternately in the width direction of the first flow channels 04. In this way, the gaps between adjacent first flow channels 04 and second flow channels 07 are also roughly the same, so that the distribution of the thermal conductive glue on the first plate portion 03 and the thermal conductive glue on the second plate portion 06 is roughly the same and relatively uniform, so that the cooling effect of the cooling plate 100 on the two battery core modules 200 is more uniform. Of course, the first flow channels 04 and the second flow channels 07 can also be arranged one by one in the width direction of the first flow channel 04, or the first flow channels 04 and the second flow channels 07 can be concentrated together in the width direction of the first flow channel 04. In addition, in the prior art, if the thermal conductivity of one side of the large flat plate and the side of the flow channel plate is to be the same, the thickness of the structural adhesive on both sides must be controlled more accurately, which increases the difficulty of the process. In the embodiment of the present application, since the amount of thermally conductive adhesive on the first plate portion 03 is similar to or even the same as the amount of thermally conductive adhesive on the second plate portion 06, the thickness of the thermally conductive adhesive on the first plate portion 03 and the thickness of the thermally conductive adhesive on the second plate portion 06 are relatively easy to be similar or even the same after processing, thereby making the thermal conductivity effects similar or the same.

[0045] Optionally, the first flow channels 04 are interconnected, and the second flow channels 07 are interconnected. When the first flow channels 04 are interconnected, the heat can be balanced between the first flow channels 04, so that the battery module 200 can dissipate heat more evenly. When the second flow channels 07 are interconnected, the heat can be balanced between the second flow channels 07, so that another battery module 200 can dissipate heat more evenly.

[0046] Optionally, the first flow channel 04 is connected to the second flow channel 07. This allows the first flow channels 04 and the second flow channels 07 to exchange heat through the circulation of the coolant, so that the cooling effect of the cooling plate 100 on the two battery modules 200 is more uniform.

[0047] Optionally, the cooling plate 100 provided in the embodiment of the present application includes two flow channel areas arranged in the width direction of the first flow channel 04, and the two flow channel areas are symmetrically arranged with a symmetry axis parallel to the length direction of the first flow channel 04. This makes the arrangement of the first flow channel 04 and the second flow channel 07 in one flow channel area the same as the arrangement of the first flow channel 04 and the second flow channel 07 in another flow channel area, so that the heat dissipation capacity of the two flow channel areas is almost the same, so that the heat exchange effect of different positions of the same battery module 200 also tends to be the same, thereby improving the uniformity of cooling the battery module 200. Of course, it is also possible to stagger the first flow channels 04 and the second flow channels 07 one by one in the width direction of the first flow channel 04, that is, a first flow channel 04, a flow channel, another first flow channel 04, and another second flow channel 07 are arranged in this order backwards.

[0048] Optionally, the cooling plate 100 is also provided with a flow channel inlet 01 and a flow channel outlet 02, and the positions of the flow channel inlet 01 and the flow channel outlet 02 are both located at the junction of the two flow channel areas. This makes the coolant flow in and out at the junction of the two flow channel areas, and the distance traveled by the coolant is equivalent to half of the sum of the lengths of each flow channel. Compared with making the distance traveled by the coolant the sum of the lengths of each flow channel, the heat exchange efficiency of the coolant is higher, and the heat dissipation speed of the battery module 200 is faster.

[0049] Optionally, four first flow channels 04 are formed on the first plate portion 03, and four second flow channels 07 are formed on the second plate portion 06. One of the two flow channel areas is the first flow channel 04 area, and the other flow channel area is the second flow channel 07 area. The two first flow channels 04 and the two second flow channels 07 are both located in the first flow channel 04 area. In the first flow channel 04 area, from a position close to the second flow channel 07 area to a position far from the second flow channel 07 area, one first flow channel 04, one second flow channel 07, another first flow channel 04, and another second flow channel 07 are sequentially arranged and sequentially connected to form a serpentine flow channel.

[0050] Two of the first flow channels 04 and two of the second flow channels 07 are both located in the second flow channel 07 area. In the second flow channel 07 area, from a position close to the first flow channel 04 area to a position far from the first flow channel 04 area, one of the first flow channels 04, one of the second flow channels 07, another of the first flow channels 04 and another of the second flow channels 07 are sequentially arranged and sequentially connected to form a serpentine flow channel.

[0051] The two innermost first flow channels 04 of each of the first flow channels 04 on the cooling plate 100 are connected to each other, and a third flow channel 05 is also formed on the second plate portion 06 , and the two outermost second flow channels 07 of each of the second flow channels 07 on the cooling plate 100 are connected to each other through the third flow channel 05 .

[0052] Another aspect of the present application provides a double-layer module unit, including two battery cell modules 200 and a cooling plate 100 provided in an embodiment of the present application, one of the battery cell modules 200 is connected to the first plate portion 03 via thermal conductive adhesive, and the other battery cell module 200 is connected to the second plate portion 06 via thermal conductive adhesive.

[0053] The double-layer module unit provided in the present application adopts the cooling plate 100 provided in the present application. Since a first flow channel 04 protruding from the first plate portion 03 is formed on the first plate portion 03, and a second flow channel 07 protruding from the second plate portion 06 is formed on the second plate portion 06, when the cooling plate 100 is connected to the two battery core modules 200 through thermal conductive adhesive, compared with using a large flat plate for the first plate portion 03 or the second plate portion 06, the amount of thermal conductive adhesive used on the first plate portion 03 is closer to the amount of thermal conductive adhesive used on the second plate portion 06, thereby making the cooling effect of the cooling plate 100 on the two battery core modules 200 relatively uniform.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cooling plate, characterized in that It includes a first plate portion and a second plate portion, the first plate portion is used to connect to a layer of battery cell modules, the second plate portion is used to connect to another layer of battery cell modules, the first plate portion and the second plate portion are overlapped and connected to each other, a first flow channel is formed on the first plate portion, and a second flow channel is formed on the second plate portion, the first flow channel protrudes from the first plate portion in a direction away from the second plate portion, and the second flow channel protrudes from the second plate portion in a direction away from the first plate portion.

2. The cooling plate according to claim 1, characterized in that A plurality of first flow channels are formed on the first plate portion, and a plurality of second flow channels are formed on the second plate portion, wherein the number of the first flow channels is the same as the number of the second flow channels.

3. The cooling plate according to claim 2, characterized in that The length of the first flow channel is the same as the length of the second flow channel, the width of the first flow channel is the same as the width of the second flow channel, and / or the depth of the first flow channel is the same as the depth of the second flow channel.

4. The cooling plate according to claim 3, characterized in that The length directions of the first flow channels are parallel to each other, the length directions of the second flow channels are parallel to each other, the length direction of the first flow channel is parallel to the length direction of the second flow channel, and the first flow channels and the second flow channels are staggered in the width direction of the first flow channel.

5. The cooling plate according to claim 4, characterized in that The first flow channels are interconnected, and the second flow channels are interconnected.

6. The cooling plate according to claim 5, characterized in that The first flow channel is communicated with the second flow channel.

7. The cooling plate according to claim 6, characterized in that It includes two flow channel areas arranged in the width direction of the first flow channel, and the two flow channel areas are symmetrically arranged with a symmetry axis parallel to the length direction of the first flow channel.

8. The cooling plate according to claim 7, characterized in that The cooling plate is also provided with a flow channel liquid inlet and a flow channel liquid outlet, and the positions of the flow channel liquid inlet and the flow channel liquid outlet are both located at the junction of the two flow channel areas.

9. The cooling plate according to claim 8, characterized in that Four first flow channels are formed on the first plate portion, and four second flow channels are formed on the second plate portion. One of the two flow channel areas is a first flow channel area, and the other flow channel area is a second flow channel area. The two first flow channels and the two second flow channels are both located in the first flow channel area. In the first flow channel area, one first flow channel, one second flow channel, another first flow channel, and another second flow channel are sequentially arranged and sequentially connected to form a serpentine flow channel from a position close to the second flow channel area to a position far from the second flow channel area. The two first flow channels and the two second flow channels are both located in the second flow channel area. In the second flow channel area, one first flow channel, one second flow channel, another first flow channel and another second flow channel are sequentially arranged and sequentially connected to form a serpentine flow channel from a position close to the first flow channel area to a position far from the first flow channel area. The two innermost first flow channels of each of the first flow channels on the cooling plate are connected to each other, and a third flow channel is formed on the second plate portion, and the two outermost second flow channels of each of the second flow channels on the cooling plate are connected to each other through the third flow channel.

10. Double-layer module unit, characterized in that: It comprises two battery cell modules and a cooling plate as claimed in any one of claims 1 to 9, wherein one of the battery cell modules is connected to the first plate portion via thermally conductive adhesive, and the other battery cell module is connected to the second plate portion via thermally conductive adhesive.

Images