Cold plate structure, cold plate assembly, battery pack and electric equipment

Abstract

The invention discloses a cold plate structure, a cold plate assembly, a battery pack and electric equipment, the cold plate structure comprises a plurality of cooling main boards, and the plurality of cooling main boards are suitable for cooling a pole column area of a battery module. The cold plate structure comprises a plurality of cooling main plates, and the plurality of cooling main plates are suitable for cooling the pole column area of the battery module, so that the cold plate structure can cool the end part of the battery module and also can cool the connecting sheets between the battery cells, and the heat exchange performance of the cooling system can be improved; at the moment, the structural strength and the system integration degree of the cold plate structure are high, the assembly space can be saved while the heat exchange requirement is met, in addition, the plurality of cooling main plates can carry out partitioned heat dissipation on the battery module according to the heat production characteristic, the temperature difference of the battery module is reduced, and the performance of the battery pack is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a cold plate structure, a cold plate assembly, a battery pack and electrical equipment. Background Art

[0002] In the related art, a double-layer cooling mainboard is composed of a first cooling mainboard and a second cooling mainboard welded together. The double-layer cooling mainboards are respectively laid on the upper and lower bottom surfaces of the battery pack, the thermal pads are between the single cells of the battery pack, and the air-cooling plate is three-dimensionally surrounded by the side of the battery pack. The double-layer cooling mainboard and the air-cooling plate are used to cool the battery pack.

[0003] However, the existing cold plate structure also has significant defects: first, the cold plate structure air-cools the sides of the battery module, and the heat exchange capacity is insufficient. Second, the double-layer cooling main board is welded through connecting pipes, and the air-cooling plate surrounds the battery module. Its structural strength is low and cannot meet the application scenarios with high requirements for structural strength such as double-layer battery cell layout. In addition, the structure and cooling method of the cooling system cannot be flexibly adjusted according to different working environments and working conditions. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a cold plate structure, which can improve the heat exchange performance of the cooling system, save assembly space, and improve the performance of the battery pack.

[0005] The present invention further provides a cold plate assembly.

[0006] The present invention further provides a battery pack.

[0007] The present invention further provides an electrical device.

[0008] The cold plate structure according to the present invention comprises: a plurality of cooling main boards, wherein the plurality of cooling main boards are suitable for cooling the pole area of ​​the battery module.

[0009] According to the cold plate structure of the present invention, the cold plate structure includes multiple cooling mainboards, and the multiple cooling mainboards are suitable for cooling the pole area of ​​the battery module. In this way, while the cold plate structure cools the end of the battery module, it can also cool the connecting pieces between the battery cells, which can improve the heat exchange performance of the cooling system. Secondly, multiple cooling mainboards are attached to the battery module. At this time, the structural strength and system integration of the cold plate structure are high, and the assembly space can be saved while meeting the heat exchange requirements. In addition, multiple cooling mainboards can perform zoned heat dissipation on the battery module according to the heat generation characteristics, which is beneficial to reducing the temperature difference of the battery module and improving the performance of the battery pack.

[0010] In some examples of the present invention, the plurality of cooling mainboards include: a first cooling mainboard, a second cooling mainboard and a third cooling mainboard, the first cooling mainboard being suitable for fitting to the upper surface of the pole area of ​​the battery module, the second cooling mainboard being suitable for fitting to the lower surface of the pole area of ​​the battery module, and the third cooling mainboard being connected between the first cooling mainboard and the second cooling mainboard.

[0011] In some examples of the present invention, cooling channels are disposed inside the first cooling mainboard, the second cooling mainboard, and the third cooling mainboard, and the cooling channels of the first cooling mainboard, the second cooling mainboard, and the third cooling mainboard are interconnected.

[0012] In some examples of the present invention, the cold plate structure further includes: a first branch flow confluence structure, wherein the first branch flow confluence structure is multiple, and in the extension direction of the cooling channel, the multiple first branch flow confluence structures are spaced apart between the cooling channels.

[0013] In some examples of the present invention, the third cooling mainboard is provided with a circuit board cooling groove, and the circuit board cooling groove is located between the cooling channels; and / or the third cooling mainboard is provided with a thermistor cooling groove, and the thermistor cooling groove is located between the cooling channels.

[0014] In some examples of the present invention, the cold plate structure also includes: a second branch flow structure, which is arranged on both sides of the circuit board cooling groove in the extension direction of the cooling channel; and / or the second branch flow structure is arranged on both sides of the thermistor cooling groove in the extension direction of the cooling channel.

[0015] In some examples of the present invention, the cold plate structure also includes: a first collector, a second collector and a third collector, the first collector is connected to the first cooling mainboard, the second collector is connected to the second cooling mainboard, and the third collector is connected to the third cooling mainboard.

[0016] In some examples of the present invention, the first header and the second header are respectively provided with a water inlet, and the third header is provided with a water outlet; or the first header and the second header are respectively provided with a water outlet, and the third header is provided with a water inlet.

[0017] The cold plate assembly according to the present invention comprises: the cold plate structure described above.

[0018] In some examples of the present invention, the cold plate assembly further includes: an auxiliary cold plate adapted to fit the upper surface of the non-pole region of the battery module; and / or the auxiliary cold plate adapted to fit the lower surface of the non-pole region of the battery module.

[0019] In some examples of the present invention, the cold plate assembly further includes: an insulation plate adapted to fit the upper surface of the non-pole region of the battery module; and / or the insulation plate adapted to fit the lower surface of the non-pole region of the battery module.

[0020] In some examples of the present invention, the cold plate assembly further includes: a reinforcing plate adapted to fit the upper surface of the non-pole region of the battery module; and / or the reinforcing plate adapted to fit the lower surface of the non-pole region of the battery module.

[0021] In some examples of the present invention, there are multiple cold plate structures, and the multiple cold plate structures are stacked in the up and down directions, and the multiple cold plate structures are connected to each other.

[0022] According to the battery pack of the present invention, it includes: a battery module, the battery module includes: a pole area and a non-pole area, the pole area is two, and the two pole areas are respectively located at the two ends of the non-pole area; the cold plate assembly mentioned above, the cold plate structure is two, and the two cold plate structures are respectively arranged at the two pole areas.

[0023] In some examples of the present invention, the battery pack further includes: side beams, and the plurality of cooling main boards and the side beams are an integrally extruded structure.

[0024] The electrical equipment according to the present invention comprises: the battery pack described above.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic diagram of a cold plate structure according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of the first cooling mainboard; Figure 3 is a structural schematic diagram of the second cooling mainboard; Figure 4 It is a schematic diagram of the structure of the third cooling mainboard; Figure 5 This is a partial enlarged picture of the third cooling mainboard; Figure 6 is a schematic diagram of a first structure of a cold plate assembly according to another embodiment of the present invention; Figure 7 is a second structural schematic diagram of a cold plate assembly according to another embodiment of the present invention; Figure 8 is a third structural schematic diagram of a cold plate assembly according to another embodiment of the present invention; Fig. 9 is a fourth structural schematic diagram of a cold plate assembly according to another embodiment of the present invention; Fig.10 is a schematic structural diagram of a battery pack according to another embodiment of the present invention.

[0027] Reference numerals: 1. Cold plate structure; 10. Cooling main board; 100. First cooling main board; 101. Second cooling main board; 102. Third cooling main board; 103. Cooling channel; 104. First branch and confluence structure; 105. Circuit board cooling slot; 106. Thermistor cooling slot; 107. Second branch and confluence structure; 20. First collector; 200. Water inlet; 30. Second collector; 40. Third collector; 400. Water outlet; 2. Cold plate assembly; 50. Auxiliary cold plate; 60. Insulation plate; 70. Reinforcement plate; 3. Battery pack; 80. Battery module; 800. Pole area; 801. Non-pole area. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0029] Reference below Figure 1-Figure 10 A cold plate structure 1 according to an embodiment of the present invention is described, which cold plate structure 1 may constitute a cold plate assembly 2 .

[0030] like Figure 1 As shown, the cold plate structure 1 according to the embodiment of the present invention comprises: a plurality of cooling main boards 10. The plurality of cooling main boards 10 are components of the cold plate structure 1, and can mainly cool the battery module 80.

[0031] like Figure 1 As shown, multiple cooling mainboards 10 are suitable for cooling the pole area 800 of the battery module 80. The cooling mainboards 10 are respectively arranged on both sides of the battery module 80. At this time, the cooling mainboard 10 can cool the pole area 800 of the battery module 80. In this way, the cold plate structure 1 can cool the connecting piece between the battery cells while cooling the end of the battery module 80, which can improve the heat exchange performance of the cooling system. Secondly, multiple cooling mainboards 10 are attached to the battery module 80. At this time, the structural strength and system integration of the cold plate structure 1 are high, which can save assembly space while meeting the heat exchange requirements. In addition, multiple cooling mainboards 10 can dissipate heat for the battery module 80 in different zones according to the heat generation characteristics, which is conducive to reducing the temperature difference of the battery module 80 and improving the performance of the battery pack 3.

[0032] Therefore, the cold plate structure 1 includes multiple cooling mainboards 10, and the multiple cooling mainboards 10 are suitable for cooling the pole area 800 of the battery module 80. In this way, while the cold plate structure 1 cools the end of the battery module 80, it can also cool the connecting plate between the battery cells, which can improve the heat exchange performance of the cooling system. Secondly, the multiple cooling mainboards 10 are attached to the battery module 80. At this time, the structural strength and system integration of the cold plate structure 1 are high, and the assembly space can be saved while meeting the heat exchange requirements. In addition, the multiple cooling mainboards 10 can perform zoned heat dissipation on the battery module 80 according to the heat generation characteristics, which is beneficial to reducing the temperature difference of the battery module 80 and improving the performance of the battery pack 3.

[0033] Specifically, Figure 1 As shown, the multiple cooling mainboards 10 include: a first cooling mainboard 100, a second cooling mainboard 101 and a third cooling mainboard 102. The first cooling mainboard 100 is suitable for being attached to the upper surface of the pole area 800 of the battery module 80, the second cooling mainboard 101 is suitable for being attached to the lower surface of the pole area 800 of the battery module 80, and the third cooling mainboard 102 is connected between the first cooling mainboard 100 and the second cooling mainboard 101.

[0034] It should be noted that the first cooling mainboard 100, the second cooling mainboard 101 and the third cooling mainboard 102 are connected to form the cooling mainboard 10. The first cooling mainboard 100, the second cooling mainboard 101 and the third cooling mainboard 102 can mainly play the role of cooling and heat dissipation. The first cooling mainboard 100 is suitable for being attached to the upper surface of the pole area 800 of the battery module 80, and the first cooling mainboard 100 can cool the upper surface of the pole area 800 of the battery module 80. The second cooling mainboard 101 is suitable for being attached to the lower surface of the pole area 800 of the battery module 80, and the second cooling mainboard 101 can cool the lower surface of the pole area 800 of the battery module 80. The third cooling mainboard 102 is connected between the first cooling mainboard 100 and the second cooling mainboard 101, so that the first cooling mainboard 100 and the second cooling mainboard 101 can be connected to form a whole, which is convenient for the installation and setting of the cooling mainboard 10. Moreover, the cooling main board 10 can form an I-shaped structure as a whole, and the pole area 800 of the battery module 80 can be wrapped in the I-shaped structure, which is convenient for layout and can cool the pole area 800 of the battery module 80 from multiple angles, which is beneficial to improving the heat exchange performance of the system and reducing the temperature difference of the battery module 80, thereby improving the performance of the battery pack 3. Among them, the heat exchange performance and structural strength between the first cooling main board 100 and the second cooling main board 101 and the upper surface and lower surface of the battery module 80 can be ensured by applying thermal conductive structural adhesive. The first cooling main board 100 and the second cooling main board 101 are made flat on both sides. At this time, the first cooling main board 100 and the second cooling main board 101 can be used as the cooling main board 10 to cool the pole area 800 of the battery module 80, and can also serve as a structural strength plate to bear the weight, which can ensure the strength performance of the system. The first cooling main board 100, the second cooling main board 101 and the third cooling main board 102 cool the pole area 800 of the battery module 80, and their length and height can be adjusted according to the heat generation characteristics of the battery module 80.

[0035] Among them, Figure 2-Figure 5As shown, the first cooling mainboard 100, the second cooling mainboard 101 and the third cooling mainboard 102 are all provided with cooling channels 103, and the cooling channels 103 of the first cooling mainboard 100, the second cooling mainboard 101 and the third cooling mainboard 102 are interconnected. The cooling channel 103 can play a diversion role. The first cooling mainboard 100, the second cooling mainboard 101 and the third cooling mainboard 102 are all provided with cooling channels 103. The cooling medium can flow in the cooling channel 103 to exchange heat with the battery module 80. The cooling channels 103 of the first cooling mainboard 100, the second cooling mainboard 101 and the third cooling mainboard 102 are interconnected. At this time, the cooling medium can flow in the cooling channel 103 of the first cooling mainboard 100, the second cooling mainboard 101 and the third cooling mainboard 102, which can better cool the pole area 800 of the battery module 80, which is conducive to improving the heat exchange performance of the system and reducing the temperature difference of the battery module 80, thereby improving the performance of the battery pack 3. It should be noted that the cooling channel 103 can be rectangular, trapezoidal or a single circular tube confluence. For example, the cooling channel 103 can be set as a rectangular channel with a channel cross-sectional size of 1.6mm*0.95mm. The length of the cooling channel 103 is consistent with the longitudinal dimension of the battery module 80. The direction of the cooling channel 103 is perpendicular to the direction of the battery module 80, so as to ensure that the heat dissipation of each battery cell is relatively uniform. The number of cooling channels 103 is determined according to the battery cell size parameters. The vertical dimension of the cold plate structure 1 needs to ensure that the cooling channel 103 covers an area not less than the battery cell height area. The horizontal dimension usually covers 20% of the battery cell length. The cross-sectional dimension of the cooling channel 103 can be increased or decreased according to the system strength requirements.

[0036] In addition, if Figure 4 and Figure 5 As shown, the cold plate structure 1 further includes: a first branch-flow confluence structure 104, and there are multiple first branch-flow confluence structures 104. In the extension direction of the cooling channel 103, multiple first branch-flow confluence structures 104 are arranged at intervals between the cooling channels 103. The first branch-flow confluence structure 104 can mainly improve the uniformity of flow distribution. There are multiple first branch-flow confluence structures 104. In the extension direction of the cooling channel 103, multiple first branch-flow confluence structures 104 are arranged at intervals between the cooling channels 103. The multiple first branch-flow confluence structures 104 can further improve the uniformity of flow distribution. In the extension direction of the cooling channel 103, multiple first branch-flow confluence structures 104 are arranged at intervals between the cooling channels 103, so that interference between the multiple first branch-flow confluence structures 104 can be avoided, and at the same time, the distribution range of the multiple first branch-flow confluence structures 104 can be wider, which can also improve the uniformity of flow distribution to a certain extent.

[0037] Of course, if Figure 4 and Figure 5 As shown, the third cooling mainboard 102 is provided with a circuit board cooling slot 105, and the circuit board cooling slot 105 is located between the cooling channels 103, and / or the third cooling mainboard 102 is provided with a thermistor cooling slot 106, and the thermistor cooling slot 106 is located between the cooling channels 103. The circuit board cooling slot 105 can lead the circuit board cooling to the outside of the third cooling mainboard 103, and the circuit board cooling slot 105 is located between the cooling channels 103, at which time the cooling medium can flow in the cooling channel 103 and exchange heat with the circuit board cooling slot 105, and the thermistor cooling slot 106 can lead the thermistor cooling to the outside of the third cooling mainboard 103, and the thermistor cooling slot 106 is located between the cooling channels 103, at which time the cooling medium can flow in the cooling channel 103 and exchange heat with the thermistor cooling slot 106.

[0038] Furthermore, if Figure 4 and Figure 5 As shown, the cold plate structure 1 further includes: a second flow branching structure 107, which is arranged on both sides of the circuit board cooling slot 105 in the extension direction of the cooling channel 103, and / or is arranged on both sides of the thermistor cooling slot 106 in the extension direction of the cooling channel 103. The second flow branching structure 107 can mainly improve the uniformity of flow distribution, and is arranged on both sides of the circuit board cooling slot 105 in the extension direction of the cooling channel 103, and / or is arranged on both sides of the thermistor cooling slot 106 in the extension direction of the cooling channel 103, and the second flow branching structure 107 is arranged before and after the circuit board cooling slot 105 and / or the thermistor cooling slot 106 for avoidance.

[0039] In addition, Figure 1As shown, the cold plate structure 1 also includes: a first header 20, a second header 30 and a third header 40, the first header 20 is connected to the first cooling main board 100, the second header 30 is connected to the second cooling main board 101, and the third header 40 is connected to the third cooling main board 102. The first header 20, the second header 30 and the third header 40 are components of the cold plate structure 1, and all of them can introduce cooling medium into the cold plate structure 1. The first header 20 is connected to the first cooling main board 100, the second header 30 is connected to the second cooling main board 101, and the third header 40 is connected to the third cooling main board 102. The first header 20, the second header 30 and the third header 40 divide the cold plate structure 1 into three parts, namely the first cooling main board 100, the second cooling main board 101 and the third cooling main board 102. The first header 20, the second header 30 and the third header 40 are respectively connected to the first cooling main board 100, the second cooling main board 101 and the third cooling main board 102, so that the cooling medium can be introduced into the first cooling main board 100, the second cooling main board 101 and the third cooling main board 102 by the first header 20, the second header 30 and the third header 40, respectively, so as to play a cooling role.

[0040] It should be noted that if Figure 1 As shown, the first header 20 and the second header 30 are respectively provided with a water inlet 200, and the third header 40 is provided with a water outlet 400, or the first header 20 and the second header 30 are respectively provided with a water outlet 400, and the third header 40 is provided with a water inlet 200. The water inlet 200 can enable the cooling medium to flow into the cold plate structure 1, and the water outlet 400 can enable the cooling medium to flow out of the cold plate structure 1. The water inlet 200 and the water outlet 400 can be arranged in two forms. The first form is that the first header 20 and the second header 30 are respectively provided with a water inlet 200, and the third header 40 is provided with a water outlet 400. The second form is that the first header 20 and the second header 30 are respectively provided with a water outlet 400, and the third header 40 is provided with The water inlet 200, that is, according to the different positions of the water inlet 200 and the water outlet 400, the inflow and outflow modes of the cooling medium can be divided into two corresponding modes, one is that the cooling medium flows into the cold plate structure 1 through the first header 20 and the second header 30, and flows out of the cold plate structure 1 through the third header 40, and the other is that the cooling medium flows into the cold plate structure 1 through the third header 40, and flows out of the cold plate structure 1 through the first header 20 and the second header 30. Among them, the first header 20, the second header 30 and the third header 40 are independent of each other on the side close to the water inlet 200 and the water outlet 400, and are connected to each other on the side away from the water inlet 200 and the water outlet 400.

[0041] The cold plate assembly 2 according to the embodiment of the present invention comprises: the cold plate structure 1 described in the above embodiment.

[0042] In addition, if Figure 6 As shown, the cold plate assembly 2 further includes: an auxiliary cold plate 50, the auxiliary cold plate 50 is suitable for being attached to the upper surface of the non-polar column area 801 of the battery module 80, and / or the auxiliary cold plate 50 is suitable for being attached to the lower surface of the non-polar column area 801 of the battery module 80. The auxiliary cold plate 50 can mainly play the role of cooling and heat dissipation, the auxiliary cold plate 50 is suitable for being attached to the upper surface of the non-polar column area 801 of the battery module 80, and / or the auxiliary cold plate 50 is suitable for being attached to the lower surface of the non-polar column area 801 of the battery module 80, and the auxiliary cold plate 50 can be set on the upper surface of the non-polar column area 801 of the battery module 80 and / or the lower surface of the non-polar column area 801, at this time, the polar column area 800 of the battery module 80 is cooled by the cold plate structure 1, and the non-polar column area 801 of the battery module 80 is cooled by the auxiliary cold plate 50. Among them, the cold plate structure 1 and the auxiliary cold plate 50 can be used for flow distribution through the same joint, and can also be controlled independently. The heat generation of the pole area 800 of the battery module 80 is higher than that of the non-pole area 801. Therefore, the heat transfer coefficient of the cold plate structure 1 is higher than that of the auxiliary cold plate 50. The auxiliary cold plate 50 is arranged between the two cold plate structures 1 by stir friction welding or adhesive connection. The auxiliary cold plate 50 and the upper surface of the non-pole area 801 of the battery module 80 can be connected by applying thermal conductive structural glue to ensure heat exchange performance and structural strength.

[0043] Alternatively, if Figure 7 As shown, the cold plate assembly 2 further includes: a heat preservation plate 60, the heat preservation plate 60 is suitable for being attached to the upper surface of the non-polar column area 801 of the battery module 80, and / or the heat preservation plate 60 is suitable for being attached to the lower surface of the non-polar column area 801 of the battery module 80. The heat preservation plate 60 can mainly play a heat preservation effect, the heat preservation plate 60 is suitable for being attached to the upper surface of the non-polar column area 801 of the battery module 80, and / or the heat preservation plate 60 is suitable for being attached to the lower surface of the non-polar column area 801 of the battery module 80, and the heat preservation plate 60 can be set on the upper surface of the non-polar column area 801 of the battery module 80 and / or the lower surface of the non-polar column area 801, at which time the heat preservation plate 60 can ensure the heat preservation performance of the battery module 80.

[0044] Among them, Figure 8As shown, the cold plate assembly 2 further includes: a reinforcing plate 70, which is suitable for being attached to the upper surface of the non-pole region 801 of the battery module 80, and / or the reinforcing plate 70 is suitable for being attached to the lower surface of the non-pole region 801 of the battery module 80. The reinforcing plate 70 can mainly play a reinforcing role, and the reinforcing plate 70 is suitable for being attached to the upper surface of the non-pole region 801 of the battery module 80, and / or the reinforcing plate 70 is suitable for being attached to the lower surface of the non-pole region 801 of the battery module 80. The reinforcing plate 70 can be arranged on the upper surface of the non-pole region 801 of the battery module 80 and / or the lower surface of the non-pole region 801, and at this time, the reinforcing plate 70 can improve the structural strength of the cold plate assembly 2. Among them, the material of the reinforcing plate 70 can be composite aluminum or other materials that meet the welding performance and structural strength requirements. The reinforcing plate 70 is arranged between the two cold plate structures 1 by stir friction welding or adhesive connection. The reinforcing plate 70 can be welded with positioning mounting columns, and the battery module 80 is fixed to the tray die-cast beam through the positioning columns. The number of positioning columns can be increased or decreased according to the structural strength requirements.

[0045] In addition, if Fig. 9 As shown, there are multiple cold plate structures 1, and the cold plate structures 1 are stacked in the up and down directions, and the multiple cold plate structures 1 are interconnected. The number of cold plate structures 1 can be set to multiple, and the cold plate structures 1 can be stacked in the up and down directions, so that they can be applied to a double-layer battery module 80, and the cold plate structures 1 are arranged on the side pole areas 800 of the upper and lower layers of the battery module 80, respectively, and the multiple cold plate structures 1 are interconnected, and the cold plate structures 1 on the same side are welded by stir friction welding. Among them, the auxiliary cold plate 50, the insulation plate 60 and the reinforcement plate 70 can be selected on the bottom and top surfaces of the upper and lower battery modules 80 according to system needs, and the flow distribution strategy of the cold plate structure 1 is determined according to the heat generation characteristics.

[0046] like Fig.10 As shown, the battery pack 3 according to an embodiment of the present invention includes: a battery module 80, the battery module 80 includes: a pole area 800 and a non-pole area 801, there are two pole areas 800, and the two pole areas 800 are respectively located at the two ends of the non-pole area 801, the cold plate assembly 2 described in the above embodiment, the cold plate structure 1 is two, and the two cold plate structures 1 are respectively arranged in the two pole areas 800. The battery module 80 is a core component inside the battery pack 3, which can improve the energy density and power density. The pole area 800 and the non-pole area 801 are components of the battery module 80. There are two pole areas 800, and the two pole areas 800 are respectively located at the two ends of the non-pole area 801. The number of pole areas 800 is two, and the number of non-pole areas 801 is one. The two pole areas 800 are respectively arranged at the two ends of the non-pole area 801. There are two cold plate structures 1, and the two cold plate structures 1 are respectively arranged at the two pole areas 800. The number of cold plate structures 1 is two, and the two cold plate structures 1 are respectively arranged at the two pole areas 800.

[0047] Specifically, the battery pack 3 also includes: side beams, and the multiple cooling main boards 10 and the side beams are an integral extrusion molding structure. The side beams are a component of the battery pack 3, and the multiple cooling main boards 10 and the side beams are an integral extrusion molding structure. At this time, the multiple cooling main boards 10 and the battery pack 3 are an integrated structure, which is more stable and firm, and is easy to install and set. At the same time, only one processing mold is required, which is easy to produce.

[0048] The electric device according to the embodiment of the present invention includes: the battery pack 3 described in the above embodiment.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. In the description of the present invention, a first feature "above", "above" and "above" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0052] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cold plate structure (1), characterized in that: include: A plurality of cooling mainboards (10), wherein the plurality of cooling mainboards (10) are suitable for cooling the pole area (800) of the battery module (80).

2. The cold plate structure (1) according to claim 1, characterized in that: The plurality of cooling mainboards (10) include: a first cooling mainboard (100), a second cooling mainboard (101) and a third cooling mainboard (102); the first cooling mainboard (100) is suitable for being attached to the upper surface of the pole region (800) of the battery module (80); the second cooling mainboard (101) is suitable for being attached to the lower surface of the pole region (800) of the battery module (80); and the third cooling mainboard (102) is connected between the first cooling mainboard (100) and the second cooling mainboard (101).

3. The cold plate structure (1) according to claim 2, characterized in that: The first cooling mainboard (100), the second cooling mainboard (101) and the third cooling mainboard (102) are all provided with cooling channels (103) therein, and the cooling channels (103) of the first cooling mainboard (100), the second cooling mainboard (101) and the third cooling mainboard (102) are interconnected.

4. The cold plate structure (1) according to claim 3, characterized in that: Also includes: A first flow branching structure (104), wherein the first flow branching structure (104) is multiple, and in the extension direction of the cooling flow channel (103), the multiple first flow branching structures (104) are arranged at intervals between the cooling flow channels (103).

5. The cold plate structure (1) according to claim 3, characterized in that: The third cooling mainboard (102) is provided with a circuit board cooling groove (105), and the circuit board cooling groove (105) is located between the cooling channels (103); and / or The third cooling mainboard (102) is provided with a thermistor cooling groove (106), and the thermistor cooling groove (106) is located between the cooling channels (103).

6. The cold plate structure (1) according to claim 5, characterized in that: Also includes: a second flow branching and converging structure (107), wherein in the extension direction of the cooling channel (103), the second flow branching and converging structure (107) is arranged on both sides of the circuit board cooling groove (105); and / or In the extension direction of the cooling flow channel (103), the second flow branching structure (107) is arranged on both sides of the thermistor cooling groove (106).

7. The cold plate structure (1) according to claim 2, characterized in that: Also includes: A first header (20), a second header (30) and a third header (40), wherein the first header (20) is connected to the first cooling mainboard (100), the second header (30) is connected to the second cooling mainboard (101), and the third header (40) is connected to the third cooling mainboard (102).

8. The cold plate structure (1) according to claim 7, characterized in that: The first header (20) and the second header (30) are respectively provided with a water inlet (200), and the third header 40 is provided with a water outlet (400); or The first header (20) and the second header (30) are respectively provided with a water outlet (400), and the third header (40) is provided with a water inlet (200).

9. A cold plate assembly (2), characterized in that: include: The cold plate structure (1) according to any one of claims 1 to 8.

10. The cold plate assembly (2) according to claim 9, characterized in that Also includes: An auxiliary cold plate (50), the auxiliary cold plate (50) being adapted to be attached to an upper surface of a non-polar column region (801) of a battery module (80); and / or The auxiliary cold plate (50) is suitable for being attached to the lower surface of the non-polar column area (801) of the battery module (80).

11. The cold plate assembly (2) according to claim 9, characterized in that Also includes: A heat-insulating plate (60), the heat-insulating plate (60) being adapted to be attached to an upper surface of a non-polar column region (801) of a battery module (80); and / or The heat-insulating plate (60) is suitable for being attached to the lower surface of the non-polar column region (801) of the battery module (80).

12. The cold plate assembly (2) according to claim 9, characterized in that Also includes: A reinforcing plate (70), the reinforcing plate (70) being adapted to be attached to an upper surface of a non-polar column region (801) of a battery module (80); and / or The reinforcing plate (70) is suitable for being attached to the lower surface of the non-polar column area (801) of the battery module (80).

13. The cold plate assembly (2) according to any one of claims 9 to 12, characterized in that: There are a plurality of cold plate structures (1), and in the up and down directions, the plurality of cold plate structures (1) are stacked and arranged, and the plurality of cold plate structures (1) are connected to each other.

14. A battery pack (3), characterized in that: include: A battery module (80), the battery module (80) comprising: a pole region (800) and a non-pole region (801), the pole regions (800) being two, the two pole regions (800) being respectively located at two ends of the non-pole region (801); The cold plate assembly (2) according to any one of claims 9 to 13, wherein the number of the cold plate structures (1) is two, and the two cold plate structures (1) are respectively arranged in the two pole areas (800).

15. The battery pack (3) according to claim 14, characterized in that: Also includes: Side beams, the plurality of cooling main boards (10) and the side beams are an integrally extruded structure.

16. An electrical equipment, characterized in that: include: The battery pack (3) according to any one of claims 14 to 15.

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