Cold plate assembly, direct cooling system and energy storage device

Abstract

The utility model discloses a cold plate assembly, a direct cooling system and an energy storage device. The cold plate assembly is used for the energy storage device and comprises a heat exchange plate, at least one channel penetrating through the heat exchange plate in the first direction is formed in the heat exchange plate, at least one end of the channel is used for being communicated with an external pipeline or a connector, and at least one protection mechanism is arranged at the two ends, in the first direction, of the heat exchange plate. A reinforcing mechanism is formed below the protection mechanism, and the protection mechanism is used for containing an external pipeline or a connector. Therefore, the protection mechanisms are arranged at the two ends of the heat exchange plate to accommodate the external pipeline or the joint, so that the external pipeline or the joint cannot protrude out of the heat exchange plate, the length size of the heat exchange plate can be the same as or slightly larger than the size of the plurality of battery modules supported on the heat exchange plate, and the structure is more compact; and the space required for installing the heat exchange plate in the energy storage device is reduced.

Description

Technical Field

[0001] The utility model relates to the field of energy storage devices, in particular to a cold plate assembly, a direct cooling system and an energy storage device. Background Art

[0002] The existing liquid cooling system includes a cold plate assembly. The cold plate assembly includes a heat exchange plate. The heat exchange plate has a channel for circulating a cooling medium such as water. The battery module is supported on the heat exchange plate and exchanges heat with the heat exchange plate and the cooling medium inside it, thereby achieving cooling. During the heat exchange process, the water remains in the liquid phase.

[0003] At least one channel in the heat exchange plate often needs to be connected to an external pipe or joint. Therefore, when the overall size of multiple battery modules supported on the heat exchange plate is constant, the size of the heat exchange plate plus the external pipe or joint will be larger than the overall size of the battery module. In this way, a larger space is required in the energy storage device for installing the heat exchange plate.

[0004] To this end, the utility model provides a cold plate assembly, a direct cooling system and an energy storage device to at least partially solve the above problems. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the specific embodiments section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] In order to at least partially solve the above technical problems, the utility model provides a cold plate assembly, which is used for an energy storage device, and the cold plate assembly includes:

[0007] A heat exchange plate, wherein at least one channel is provided inside the heat exchange plate and penetrates the heat exchange plate along a first direction, at least one end of the channel is used to connect to an external pipe or joint, at least one protective mechanism is provided at both ends of the heat exchange plate along the first direction, and a reinforcing mechanism is formed below the protective mechanism, and the protective mechanism is used to accommodate an external pipe or joint.

[0008] According to the cold plate assembly of the utility model, protective mechanisms are provided at both ends of the heat exchange plate to accommodate external pipes or joints, so that the external pipes or joints will not protrude from the heat exchange plate. The length of the heat exchange plate can be the same as or slightly larger than the size of the multiple battery modules supported thereon, and the structure is more compact, reducing the space required for installing the heat exchange plate in the energy storage device. The installation of the heat exchange plate can be achieved by supporting the reinforcing mechanism under the protective mechanism on the mounting frame, and the reinforcing mechanism can strengthen the strength of the two ends of the heat exchange plate, reduce the stress on the external pipes or joints, and ensure the sealing of the pipes or joints.

[0009] Optionally, at least one protrusion is provided between two protection mechanisms on the same end of the heat exchange plate or on both sides of the protection mechanism, and the channel is provided between two adjacent protrusions along a second direction perpendicular to the first direction.

[0010] Optionally, at least two channels are provided inside the heat exchange plate, and the cold plate assembly further comprises at least one elbow, at least a portion of the elbow is within the protection mechanism and communicates with ends of the two channels.

[0011] Optionally, the curved pipe includes two first pipe segments and one second pipe segment, one end of the second pipe segment is connected to one first pipe segment, the other end of the second pipe segment is connected to another first pipe segment, one first pipe segment is connected to one of the channels, and the other first pipe segment is connected to the other channel.

[0012] Optionally, along the first direction, the elbow is located within the outer contour of the heat exchange plate.

[0013] Optionally, the cold plate assembly includes at least two heat exchange plates, the at least two heat exchange plates are spliced ​​to each other, and the channels of the two heat exchange plates are connected through a bend pipe.

[0014] Optionally, the cold plate assembly also includes a first main pipe, which is connected to one of the channels. The first main pipe includes a straight pipe section, and there is an avoidance position between the raised portion at the same end as the first main pipe and the end of the reinforcing mechanism. The straight pipe section passes through the avoidance position and the protective mechanism of multiple heat exchange plates to connect to external pipes or joints.

[0015] Optionally, the at least two heat exchange plates include a first heat exchange plate and a second heat exchange plate. Along the second direction, the first heat exchange plate is located at one end of the cold plate assembly, and the second heat exchange plate is located at the other end of the cold plate assembly.

[0016] The cold plate assembly further includes a first joint, a second main pipe and a second joint, wherein the first main pipe is connected to the first heat exchange plate and connected to a channel, the second main pipe is connected to the second heat exchange plate and connected to a channel, the first main pipe is connected to the first joint, and the second main pipe is connected to the second joint.

[0017] One channel of one of two adjacent heat exchange plates is connected to one channel of the other through a bend pipe, and the bend pipe connects the two channels of the heat exchange plates.

[0018] Optionally, the heat exchange plate has a weight-reducing channel separated from each channel, and the weight-reducing channel extends along the first direction and penetrates the heat exchange plate.

[0019] Optionally, the cold plate assembly further comprises a heating element, the heating element comprising:

[0020] A first heating element disposed in the weight reduction channel, and / or

[0021] The second heating element is disposed below the reinforcing mechanism, and the second heating element is attached to the reinforcing mechanism.

[0022] Optionally, the cold plate assembly further includes a heat transfer member, which is in contact with or integrally formed with the heat exchange plate, and is used for detachably sliding connection with the battery module.

[0023] The utility model also provides a direct cooling system, the direct cooling system comprising:

[0024] The aforementioned cold plate assembly is used to support and cool the battery module;

[0025] A refrigeration unit is connected to the cold plate assembly to deliver refrigerant to the cold plate assembly.

[0026] According to the direct cooling system of the utility model, the direct cooling system includes the aforementioned cold plate assembly, and protective mechanisms are provided at both ends of the heat exchange plate to accommodate external pipes or joints, so that the external pipes or joints will not protrude from the heat exchange plate. The length of the heat exchange plate can be the same as or slightly larger than the size of the multiple battery modules supported thereon, and the structure is more compact, reducing the space required for installing the heat exchange plate in the energy storage device. The installation of the heat exchange plate can be achieved by supporting the reinforcing mechanism under the protective mechanism on the mounting frame, and the reinforcing mechanism can strengthen the strength of the two ends of the heat exchange plate, reduce the stress on the external pipes or joints, and ensure the sealing of the pipes or joints.

[0027] The utility model also provides an energy storage device, which includes the above-mentioned direct cooling system and at least one battery module, and the cold plate assembly is in contact with at least one wall surface of the battery module.

[0028] According to the energy storage device of the utility model, the energy storage device includes the aforementioned direct cooling system, and the direct cooling system includes the aforementioned cold plate assembly. By arranging protective mechanisms at both ends of the heat exchange plate to accommodate external pipes or joints, the external pipes or joints will not protrude from the heat exchange plate. The length of the heat exchange plate can be the same as or slightly larger than the size of the multiple battery modules supported thereon, and the structure is more compact, reducing the space required for installing the heat exchange plate in the energy storage device. The installation of the heat exchange plate can be achieved by supporting the reinforcing mechanism under the protective mechanism on the mounting frame, and the reinforcing mechanism can strengthen the strength of the two ends of the heat exchange plate, reduce the stress on the external pipes or joints, and ensure the sealing of the pipes or joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the advantages of the utility model more easily understood, the utility model briefly described above will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. It can be understood that these drawings only depict typical embodiments of the utility model and should not be considered as limiting the scope of protection thereof. The utility model is described and explained with additional characteristics and details through the accompanying drawings.

[0030] Figure 1 It is a three-dimensional schematic diagram of an energy storage device according to a first preferred embodiment of the utility model;

[0031] Figure 2 for Figure 1 A three-dimensional schematic diagram of a cross-sectional view of an energy storage device;

[0032] Figure 3 for Figure 1 A three-dimensional schematic diagram of a box body of an energy storage device and a cold plate assembly connected together, wherein the wall panel is not shown;

[0033] Figure 4 for Figure 1 A three-dimensional schematic diagram of a cold plate assembly of an energy storage device;

[0034] Figure 5 for Figure 4 Another three-dimensional schematic diagram of a cold plate assembly of an energy storage device;

[0035] Figure 6 for Figure 4 A three-dimensional schematic diagram of a heat exchange plate of a cold plate assembly of an energy storage device;

[0036] Figure 7 for Figure 6 Another three-dimensional schematic diagram of a heat exchange plate of a cold plate assembly of an energy storage device;

[0037] Figure 8 for Figure 1 A three-dimensional schematic diagram of a box body, a cold plate assembly and a battery module of an energy storage device connected together, wherein the wall panel is not shown;

[0038] Fig. 9 for Figure 8 A three-dimensional schematic diagram of a battery module of an energy storage device, wherein a side plate, a top plate and a second end plate are not shown;

[0039] Fig.10 for Figure 8 Another three-dimensional schematic diagram of a battery module of an energy storage device, wherein a side plate, a top plate, a second end plate and a heat transfer member are not shown;

[0040] Fig.11 for Figure 8 A three-dimensional schematic diagram of a heat transfer component of a battery module of an energy storage device;

[0041] Fig.12 for Fig.10 A local enlarged schematic diagram of point C;

[0042] Fig.13 for Fig.11 A partial enlarged schematic diagram of point D.

[0043] Description of Reference Numerals

[0044] 100: box body; 103: bracket; 104: first bracket; 105: second bracket; 135: first pipe section; 136: second pipe section; 141: heat exchange plate; 142: main body; 143: first protrusion; 144: second protrusion; 145: third protrusion; 146: bottom plate; 147: first channel; 148: second channel; 149: weight reduction channel; 150: first heat exchange plate; 151: second heat exchange plate; 152: first joint; 153: second joint; 154: first main pipe; 1 55: second main pipe; 156: elbow; 160: outer shell; 161: bottom plate; 162: side plate; 163: first end plate; 165: limiting groove; 166: inner top wall; 167: opening; 170: battery cell group; 185: heat transfer element; 186: limiting part; 202: inner wall; 203: protrusion; 206: channel; 207: external pipeline; 208: recessed part; 209: first recessed part; 210: second recessed part; 211: avoidance position; 212: connecting pipe section; 213: straight pipe section. DETAILED DESCRIPTION

[0045] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0046] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower" and similar expressions used herein are only for the purpose of illustration and are not intended to be limiting.

[0047] In this document, ordinal numbers such as “first” and “second” cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order.

[0048] In order to thoroughly understand the implementation of the utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the utility model is described in detail below, but in addition to these detailed descriptions, the utility model can also have other implementations.

[0049] The utility model provides a cold plate assembly. The cold plate assembly is used for an energy storage device. When in use, the energy storage device is fixedly arranged at a preset position to provide electrical energy. It is understood that in an embodiment not shown, the energy storage device can also be an energy storage container. The battery module of the energy storage device is directly connected to the cold plate assembly. In this way, the temperature of the battery cell can be effectively adjusted.

[0050] Please refer to Figures 1 to 13 The energy storage device includes a box 100. The box 100 is a substantially rectangular parallelepiped structure. Herein, the width direction of the box 100 is a first direction D1. The length direction of the box 100 is a second direction D2.

[0051] It can be understood that in an embodiment not shown, the length direction of the box body is the first direction D1, and the width direction of the box body is the second direction D2.

[0052] Please refer to Figures 1 to 7 The energy storage device further includes a direct cooling system. The direct cooling system includes a battery rack located in the box 100. The battery rack includes a frame and a cold plate assembly. The battery rack is located in the box 100.

[0053] The battery rack also includes a bracket 103. The battery rack includes brackets 103 arranged in pairs. The brackets 103 arranged in pairs include a first bracket 104 and a second bracket 105. Along the width direction of the box body 100, the first bracket 104 is located at one side end of the battery rack, and the second bracket 105 is located at the other side end of the battery rack. In the vertical direction, the positions of the first bracket 104 and the second bracket 105 arranged in pairs are approximately the same. The brackets 103 arranged in pairs are used to support the same cold plate assembly (to be described later). In this way, the strength of the battery rack can be further increased, and the battery rack can stably support the cold plate assembly.

[0054] Please refer to Figures 1 to 7 , the cold plate assembly is located in the box body 100. The cold plate assembly is used to support and contact the battery module to be connected later so as to be able to adjust the temperature of the battery module later. The cold plate assembly includes a heat exchange plate 141. The heat exchange plate 141 is a plate. One side of the heat exchange plate 141 is recessed along the thickness of the heat exchange plate 141 to form a recessed portion 208 (an example of a protective mechanism). Along the first direction D1, at least one recessed portion 208 is provided at both ends of the heat exchange plate 141. The recessed portion 208 includes a first recessed portion 209 and a second recessed portion 210.

[0055] Preferably, at least one protrusion is provided between two recesses 208 on the same end of the heat exchange plate 141 or on both sides of the recess 208. For example, there are two first recesses 209. The two first recesses 209 are arranged at intervals along the second direction D2. The heat exchange plate is provided with a first protrusion 143 (an example of a protrusion) between the two first recesses 209. A second protrusion 144 and a third protrusion 145 are respectively provided on both sides of the second recess 210 along the second direction D2.

[0056] Specifically, the heat exchange plate 141 includes a body portion 142 , a first protruding portion 143 , a second protruding portion 144 and a third protruding portion 145 . Figure 5 The interface between the first protrusion 143 and the body 142, the interface between the second protrusion 144 and the body 142, and the interface between the third protrusion 145 and the body 142 are shown by dotted lines. The body 142 is a substantially rectangular plate. When the cold plate assembly is arranged in the box 100, the length direction of the body 142 is parallel to the first direction D1, and the width direction of the body 142 is parallel to the second direction D2.

[0057] like Figure 6 and Figure 7 As shown, the first protrusion 143 is located at one side of the body 142 along the first direction D1 and connected to the body 142. The second protrusion 144 and the third protrusion 145 are both located at the other side of the body 142 along the first direction D1 and connected to the body 142.

[0058] Please continue to refer to Figure 5 and Figure 6 Along the second direction D2, the second protrusion 144 is located at one end of the body 142, and the third protrusion 145 is located at the other end of the body 142. Along the second direction D2, there is a gap between the second protrusion 144 and the third protrusion 145 to form a second recessed portion 210 with the body 142.

[0059] Along the second direction D2, the first protrusion 143 and the second protrusion 144 are arranged at intervals, and the first protrusion 143 and the third protrusion 145 are arranged at intervals. In this way, along the second direction D2, the second protrusion 144 and the third protrusion 145 are respectively located on both sides of the first protrusion 143. In this way, the first protrusion 143 and the second protrusion 144 are inclined relative to each other, and the first protrusion 143 and the third protrusion 145 are inclined relative to each other.

[0060] Thus, one end of the body portion 142 along the first direction D1 and the first protrusion 143 form two first recesses 209. The two first recesses 209 are spaced apart along the second direction D2. The first protrusion 143 is located between the two first recesses 209 along the second direction D2.

[0061] The other end of the body portion 142 along the first direction D1, the second protrusion 144 and the third protrusion 145 form a second recessed portion 210. Along the second direction D2, the second recessed portion 210 is located between the second protrusion 144 and the third protrusion 145. The arrangement of the first protrusion 143, the second protrusion 144 and the third protrusion 145 can increase the strength of the heat exchange plate 141.

[0062] like Figure 6 and Figure 7 As shown, the heat exchange plate 141 has a channel 206. Along the second direction D2, the channel 206 is located in the recessed portion 208. The channel 206 extends along the first direction D1 and penetrates the heat exchange plate 141. The end of the channel 206 along the first direction D1 is used to connect the external pipe 207. The external pipe 207 includes the first main pipe 154, the second main pipe 155 and the elbow 156. At this time, the recessed portion 208 is used to accommodate part of the external pipe 207. The channel 206 is located between two adjacent protrusions (two adjacent ones of the first protrusion 143, the second protrusion 144 and the third protrusion 145) along the second direction D2.

[0063] Specifically, there are at least two channels 206. The at least two channels 206 include a first channel 147 and a second channel 148 separated from each other. The first channel 147 and the second channel 148 are arranged at intervals along the second direction D2. Along the second direction D2, the first channel 147 is located between the first protrusion 143 and the second protrusion 144, and the second channel 148 is located between the first protrusion 143 and the third protrusion 145.

[0064] It is understood that in an embodiment not shown, the channel may also be directly connected to the joint. In this case, the recessed portion is used to accommodate the joint.

[0065] Preferably, along the first direction D1, the size of the first recessed portion 209 ranges from 30 mm to 50 mm, and the size of the second recessed portion 210 ranges from 20 mm to 34 mm. Thus, the volume of the recessed portion 208 can be reduced as much as possible to ensure the cooling effect of the heat exchange plate 141.

[0066] Along the second direction D2, the size of the first recessed portion 209 ranges from 15 mm to 70 mm, and the size of the second recessed portion 210 ranges from 50 mm to 160 mm. Thus, the volume of the recessed portion 208 can be reduced as much as possible to ensure the cooling effect of the heat exchange plate 141.

[0067] Preferably, along the first direction D1, the size of the first protrusion 143 ranges from 15 mm to 50 mm, the size of the second protrusion 144 ranges from 20 mm to 34 mm, and the size of the third protrusion 145 ranges from 20 mm to 34 mm. Thus, the strength of the heat exchange plate can be increased as much as possible.

[0068] Along the second direction D2, the size of the first protrusion 143 ranges from 41 mm to 151 mm, the size of the second protrusion 144 ranges from 10 mm to 65 mm, and the size of the third protrusion 145 ranges from 10 mm to 65 mm. Thus, the strength of the heat exchange plate can be increased as much as possible.

[0069] In an embodiment not shown, the heat exchange plate may also be provided with only one channel.

[0070] Please return Figure 2 and Figure 3 , the heat exchange plate 141 is overlapped to the brackets 103 arranged in pairs. Specifically, the first protrusion 143 is overlapped to the first bracket 104. The second protrusion 144 and the third protrusion 145 are overlapped to the second bracket 105. In this way, the bracket 103 supports the cold plate assembly. The contact area between the heat exchange plate 141 and the bracket 103 is large, and the bracket 103 can stably support the heat exchange plate 141. In addition, the installation of the cold plate assembly is convenient.

[0071] Further preferably, the cold plate assembly is connected to the bracket 103 by fasteners. Thus, the operation of connecting the cold plate assembly and the bracket 103 is convenient.

[0072] In this embodiment, protective mechanisms are provided at both ends of the heat exchange plate 141 to accommodate the external pipe 207 or the joint, so that the external pipe 207 or the joint will not protrude from the heat exchange plate 141. The length of the heat exchange plate 141 can be the same as or slightly larger than the size of the multiple battery modules supported thereon, and the structure is more compact, reducing the space required for installing the heat exchange plate 141 in the energy storage device. The installation of the heat exchange plate 141 can be achieved by supporting the reinforcing mechanism under the protective mechanism on the mounting frame (battery frame), and the reinforcing mechanism can strengthen the strength of the two ends of the heat exchange plate 141, reduce the stress on the external pipe 207 or the joint, and ensure the sealing of the pipe or the joint.

[0073] In addition, by configuring the first protrusion 143, the second protrusion 144 and the third protrusion 145, the heat exchange plate 141 can be overlapped to the mounting frame for fixing the cold plate assembly through the first protrusion 143, the second protrusion 144 and the third protrusion 145. In this way, the cold plate assembly can be stably overlapped to the mounting frame.

[0074] Preferably, if Figure 6 and Figure 7As shown, the heat exchange plate 141 also includes a bottom plate portion 146 (an example of a reinforcement mechanism). The bottom plate portion 146 is a roughly rectangular structure. The width direction of the bottom plate portion 146 is parallel to the width direction of the main body portion 142. The length direction of the bottom plate portion 146 is parallel to the length direction of the main body portion 142. The bottom plate portion 146 is located at the bottom of the heat exchange plate 141. The bottom plate portion 146 is located at the lower end of the main body portion 142 and is connected to the main body portion 142. The bottom plate portion 146 is located below the recessed portion 208. Along the first direction D1, the bottom plate portion 146 extends from the free end of the first protrusion 143 to the free end of the second protrusion 144. Along the second direction D2, the bottom plate portion 146 extends from one end of the main body portion 142 to the other end. In this way, the strength of the heat exchange plate 141 can be further increased. In addition, the heat exchange plate 141 is overlapped to the bracket 103 through the bottom plate portion 146, which can further increase the contact area between the heat exchange plate 141 and the bracket 103, thereby making the connection between the heat exchange plate 141 and the bracket 103 more secure.

[0075] like Figure 3 As shown, the battery rack includes at least two cold plate assemblies. At least two pairs of brackets 103 arranged in pairs correspond to at least two cold plate assemblies one by one. The cold plate assembly is overlapped to the brackets 103 arranged in pairs corresponding thereto. In this way, at least two pairs of brackets 103 arranged in pairs and at least two cold plate assemblies constitute at least two layers of structure. Each layer of structure can be provided with the battery modules described later. In this way, the battery rack can support a larger number of battery modules, and the energy storage device provided with the battery rack has a large storage capacity.

[0076] Preferably, if Figures 2 to 5 As shown, each layer of the cold plate assembly includes at least two heat exchange plates 141. At least two heat exchange plates 141 are spliced ​​with each other along the second direction D2 (the splicing direction of the heat exchange plates 141). At this time, along the first direction D1, the first protrusions 143 of at least two heat exchange plates 141 are located at the same end of the cold plate assembly, and the splicing directions of at least two heat exchange plates 141 are the same. In this way, the heat exchange area of ​​the cold plate assembly can be increased. In addition, the number of heat exchange plates 141 can be adjusted according to the specific size of the battery module.

[0077] Please continue to refer to Figure 4 and Figure 5, the cold plate assembly further includes at least one elbow 156. At least a portion of the elbow 156 is within the recessed portion 208 and connects the ends of the two channels 206. In each layer of the cold plate assembly, the elbow 156 can connect the heat exchange plate 141 and the first channel 147 and the second channel 148. Specifically, the first channel 147 and the second channel 148 of a single heat exchange plate 141 can be connected through a elbow 156. In two adjacent heat exchange plates 141 along the second direction D2, the adjacent first channel 147 and the second channel 148 can be connected through a elbow 156. Thus, it is convenient to connect the first channel 147 and the second channel 148. In addition. The arrangement of the first protrusion 143, the second protrusion 144, the third protrusion 145 and the bottom plate portion 146 can reduce the force on the elbow 156, thereby reducing the torsional deformation of the elbow 156.

[0078] Preferably, if Figure 4 As shown, the elbow 156 includes a first pipe segment 135 and a second pipe segment 136. There are two first pipe segments 135. There is one second pipe segment 136. When the elbow 156 is connected to the heat exchange plate 141, the length direction of the first pipe segment 135 is parallel to the first direction D1. The two first pipe segments 135 are arranged at intervals along the second direction D2. One end of the second pipe segment 136 is connected to one end of one first pipe segment 135. The other end of the second pipe segment 136 is connected to one end of another first pipe segment 135. The other end of one first pipe segment 135 is used to extend into the first channel 147 to connect the first channel 147. The other end of the other first pipe segment 135 is used to extend into the second channel 148 to connect the second channel 148. In this way, the elbow 156 is used to connect the first channel 147 and the second channel 148. As a result, the strength of the elbow 156 is large.

[0079] Specifically, for the same heat exchange plate 141, the first channel 147 and the second channel 148 can be connected through a bend 156. At this time, along the second direction D2, the bend 156 is located between the second protrusion 144 and the third protrusion 145 of the heat exchange plate 141.

[0080] For two adjacent heat exchange plates 141, a first pipe section 135 of a bend pipe 156 is connected to the first channel 147 of one heat exchange plate 141. Another first pipe section 135 of the bend pipe 156 is connected to the second channel 148 of another heat exchange plate 141. At this time, the bend pipe 156 is located between the two first protrusions 143 of the two adjacent heat exchange plates 141.

[0081] In an embodiment not shown, for the same heat exchange plate, the first channel and the second channel can be connected through a bend. In this case, along the second direction D2, the first protrusion of the heat exchange plate is located between the two first pipe sections of the bend. Along the first direction D1, the second pipe section of the bend is located on the outer side of the first protrusion of the heat exchange plate away from the second protrusion.

[0082] In the embodiment not shown, for two adjacent heat exchange plates, a first pipe section of a bend pipe is connected to the first channel of one heat exchange plate. Another first pipe section of the bend pipe is connected to the second channel of another heat exchange plate. At this time, the second protrusions and the third protrusions of the two adjacent heat exchange plates are both located between the two first pipe sections of the bend pipe. The second pipe section of the bend pipe is located on the outer side of the second protrusion away from the first protrusion.

[0083] Further preferably, the curved pipe 156 is configured to be substantially U-shaped. Thus, the curved pipe 156 has a simple structure.

[0084] like Figure 4 and Figure 5 As shown, the bent pipe 156 is located within the outer contour of the heat exchange plate 141. Thus, the bent pipe 156 can be protected.

[0085] Preferably, if Figure 6 and Figure 7 As shown, the heat exchange plate 141 has a weight reduction channel 149. The weight reduction channel 149 is separated from the first channel 147 and the second channel 148. Therefore, the weight of the heat exchange plate 141 is small. The weight reduction channel 149 extends through the heat exchange plate 141 along the first direction D1. In this way, the processing of the weight reduction channel 149 is convenient.

[0086] Preferably, the cross section of the channel 206 (the cross section is perpendicular to the first direction D1) is circular. The cross section of the weight-reducing channel 149 (the cross section is perpendicular to the first direction D1) is polygonal (eg, hexagonal). Thus, the weight of the heat exchange plate 141 can be reduced as much as possible.

[0087] Preferably, the cold plate assembly further includes a heating element (not shown). The heating element includes a first heating element and / or a second heating element. The first heating element is disposed in the weight reduction channel 149. The first heating element may be a resistance wire. The second heating element is disposed below the bottom plate portion 146. The second heating element is attached (e.g., bonded) to the bottom plate portion 146. The second heating element may be a thermally conductive film (e.g., a graphite film).

[0088] Please return Figure 4 and Figure 5In each cold plate assembly, at least two heat exchange plates 141 include a first heat exchange plate 150 and a second heat exchange plate 151. Along the second direction D2, the first heat exchange plate 150 is located at one end of the cold plate assembly, and the second heat exchange plate 151 is located at the other end of the cold plate assembly.

[0089] In each layer of the cold plate assembly, the cold plate assembly further includes a first main pipe 154. The first main pipe 154 is connected to a channel 206 of the heat exchange plate 141. The first main pipe 154 includes a connecting pipe section 212 and a straight pipe section 213 connected in sequence. The connecting pipe section 212 is connected to the channel 206. The first main pipe 154 is connected to one end of the heat exchange plate 141 along the first direction D1 where the first protrusion 143 is provided.

[0090] Along the first direction D1, the bottom plate portion 146 extends and protrudes to the side of the first protrusion 143 away from the second protrusion 144. In this way, the bottom plate portion 146 and the first protrusion 143 form an escape position 211. In other words, there is an escape position 211 between the protrusion at the same end as the first main pipe 154 and the end of the bottom plate portion 146. Along the first direction D1, the straight pipe section 213 is located in the escape position 211. In this way, the straight pipe section 213 passes through the escape positions 211 and the recessed portions 208 of the plurality of heat exchange plates 141 to connect to the external pipeline.

[0091] The cold plate assembly also includes a first joint 152, a second main pipe 155 and a second joint 153. The first main pipe 154 is connected to the first heat exchange plate 150 and is connected to the first channel 147. The second main pipe 155 is connected to the second heat exchange plate 151 and is connected to the second channel 148. The first main pipe 154 is connected to the first joint 152. The second main pipe 155 is connected to the second joint 153. The first joint 152 and the second joint 153 are used to be connected to the refrigeration unit to form a loop for the circulation of the refrigerant (the refrigerant includes R134a, R410A, R407C, etc.) with the refrigeration unit. When the refrigerant passes through the heat exchange plate, the liquid phase of the refrigerant can be converted into the gas phase. In this way, the temperature can be reduced more effectively. As a result, it is convenient for the cold plate assembly to be connected to the refrigeration unit.

[0092] Furthermore, in each layer of the cold plate assembly, the first main pipe 154 extends to the second heat exchange plate 151 via the side of the cold plate assembly along the first direction D1. Thus, the structure of the cold plate assembly is compact.

[0093] It is understood that in an embodiment not shown, the cold plate assembly is a heat exchange plate. The first main pipe and the second main pipe may also be connected to the heat exchange plate to communicate with the first channel and the second channel of the heat exchange plate respectively.

[0094] Preferably, the battery rack also includes a battery module. The battery module is located in the box 100. The wall surface of the battery module contacts the cold plate assembly. For example, the battery module is placed on the cold plate assembly so that the cold plate assembly supports the battery module. At this time, the lower surface of the battery module is attached to the cold plate assembly through the heat transfer member 185 described later. In this way, the cold plate assembly can more effectively adjust the temperature of the battery module.

[0095] Preferably, if Figures 8 to 13 As shown, the battery module includes an outer shell 160. The outer shell 160 includes a bottom plate 161, a side plate 162, an end plate and a top plate. The outer surface of the bottom plate 161, the outer surface of the side plate 162, the outer surface of the end plate and the outer surface of the top plate constitute the wall surface of the outer shell 160. The bottom plate 161, the side plate 162, the end plate and the top plate constitute a roughly rectangular structure. When the battery module is arranged in the box 100, the length direction of the battery module is parallel to the second direction D2. That is to say, when the cold plate assembly and the battery module are arranged in the box 100, the length direction of the heat exchange plate 141 and the length direction of the outer shell 160 form an angle (for example, vertical). As a result, the weight of each battery module is borne by multiple heat exchange plates, thereby improving the load-bearing stability and strength.

[0096] In an embodiment not shown, the cold plate assembly may also be attached to at least one of the side plates, the end plates and the top plate.

[0097] The lower surface of the bottom plate 161 forms a limiting groove 165. The limiting groove 165 includes an inner top wall surface 166 and two inner side wall surfaces 202. The plane where the inner top wall surface 166 is located is perpendicular to the vertical direction. The plane where the inner side wall surface 202 is located is perpendicular to the first direction D1. At least a portion of the inner side wall surface 202 is provided with a protrusion 203. Along the first direction D1, the protrusions 203 of the two inner side wall surfaces 202 protrude toward each other. In this way, the protrusions 203 constitute the opening 167.

[0098] In this way, the inner top wall surface 166 extends to the side of the protrusion 203 in the horizontal direction. The lower end of the opening portion 167 forms a downward opening. The limiting groove 165 is used to slide and connect to the heat transfer member 185, and then connect the cold plate assembly (to be described later) through the heat transfer member 185. In this way, the bottom plate 161 contacts the heat transfer member 185. Specifically, the inner top wall surface 166 can contact the heat transfer member 185. The portion of the lower surface of the bottom plate 161 outside the limiting groove 165 can contact the heat transfer member 185. At this time, the cold plate assembly can effectively adjust the temperature of the battery module.

[0099] like Fig. 9 and Fig.10As shown, the battery module also includes a cell group 170. The cell group 170 is used to provide electrical energy to the energy storage device. The cell group 170 is located in the housing 160. In this way, the housing 160 can protect the cell group 170. The bottom end of the cell group 170 is overlapped to the upper surface of the bottom plate 161. In this way, the bottom plate 161 supports the cell group 170. In addition, the cell group 170 is directly in contact with the bottom plate 161. The bottom plate 161 is in contact with the cold plate assembly through the heat transfer member 185 described later. The heat of the cell group 170 can be directly transferred to the bottom plate 161, and then transferred to the cold plate assembly through the heat transfer member 185 described later. In this way, the temperature of the cell group 170 can be more effectively adjusted.

[0100] Furthermore, if Figures 9 to 13 As shown, along the length direction of the housing 160, the limiting groove 165 penetrates at least one end of the bottom plate 161 to form an open end at the end of the bottom plate 161. Thus, the processing of the limiting groove 165 is convenient. In addition, the weight of the bottom plate 161 is small.

[0101] Furthermore, along the length direction of the housing 160, the limiting groove 165 penetrates the bottom plate 161. Thus, it is more convenient to process the limiting groove 165. In addition, the weight of the bottom plate 161 is smaller.

[0102] like Fig. 9 As shown, the end plate is located on the side of the bottom plate 161 along the length direction of the shell 160, and is connected to the bottom plate 161. The end plate extends to the lower surface of the bottom plate 161. The end plate includes a first end plate 163 and a second end plate. Along the length direction of the shell 160, the first end plate 163 is located at one end of the shell 160, and the second end plate is located at the other end of the shell 160. The lower end of the second end plate has an end plate opening. The end plate opening and the open end are connected. As a result, the limiting portion 186 of the heat transfer member 185 described later can be installed in the limiting groove 165 through the end plate opening, which facilitates the connection of the bottom plate 161 to the heat transfer member 185 described later, so that the battery module can be conveniently installed in the energy storage device.

[0103] Furthermore, the limiting groove 165 is configured as a T-shaped groove or a dovetail groove. Thus, the structure of the bottom plate 161 is simple.

[0104] Preferably, please refer to Figures 9 to 13 The battery module also includes a heat transfer member 185. The heat transfer member 185 is a plate member. The heat transfer member 185 is a metal member. The heat transfer member 185 is located below the bottom plate 161 and is attached to the bottom plate 161. The heat transfer member 185 can be connected to the cold plate assembly by a fastener. The heat transfer member 185 is used to attach to the cold plate assembly. In this way, the heat of the battery cell can be transferred to the cold plate assembly through the bottom plate 161 and the heat transfer member 185, which can more effectively cool the battery cell.

[0105] It is understood that in an embodiment not shown, the heat transfer element can be constructed as an integral part with the cold plate assembly. That is, the heat transfer element and the cold plate assembly are integrally formed.

[0106] A limiting portion 186 (an example of a raised portion) is formed on the upper surface of the heat transfer member 185. The shape of the limiting portion 186 is substantially the same as that of the limiting groove 165. In this way, the shapes of the limiting portion and the limiting groove 165 correspond. The limiting portion 186 extends into the limiting groove 165. In this way, the limiting portion 186 and the limiting groove 165 are slidably connected. In this way, the limiting portion 186 and the limiting groove 165 cooperate to limit the position of the housing 160 relative to the heat transfer member 185 in the vertical direction and in the first direction D1. In addition, when the housing 160 is mounted to the heat transfer member 185, the limiting portion 186 enters the limiting groove 165 from the end plate opening along the second direction D2. In this process, the limiting portion 186 and the limiting groove 165 cooperate to guide the movement of the housing 160 when it is connected to the heat transfer member 185.

[0107] The battery rack also includes a refrigeration unit (not shown). The refrigeration unit can be a refrigeration unit of the prior art. For example, the refrigeration unit includes a compressor, a condenser (such as a microchannel heat exchanger), a fan, a gas-liquid storage regenerator, a drying filter and a valve group. The compressor, the condenser, the gas-liquid storage regenerator, the drying filter, the valve group, the channel of the cold plate assembly, the gas-liquid storage regenerator, and the compressor are connected in sequence through pipelines to form a passage for circulating refrigerant. The fan is used for ventilation and heat dissipation. The gas-liquid storage regenerator can be a regenerator of the prior art that can separate liquid refrigerant and gaseous refrigerant. The regenerator can also store liquid. The regenerator includes a first channel and a second channel. The first channel and the second channel are separated. The fluid in the first channel and the fluid in the second channel can exchange heat.

[0108] Preferably, the box body 100 does not include top corner fittings and bottom corner fittings of the container.

[0109] The utility model also provides a direct cooling system, the direct cooling system comprising:

[0110] The aforementioned cold plate assembly is used to support and cool the battery module;

[0111] A refrigeration unit is connected to the cold plate assembly to deliver refrigerant to the cold plate assembly.

[0112] According to the direct cooling system of the utility model, the direct cooling system includes the aforementioned cold plate assembly, and protective mechanisms are provided at both ends of the heat exchange plate to accommodate external pipes or joints, so that the external pipes or joints will not protrude from the heat exchange plate. The length of the heat exchange plate can be the same as or slightly larger than the size of the multiple battery modules supported thereon, and the structure is more compact, reducing the space required for installing the heat exchange plate in the energy storage device. The installation of the heat exchange plate can be achieved by supporting the reinforcing mechanism under the protective mechanism on the mounting frame, and the reinforcing mechanism can strengthen the strength of the two ends of the heat exchange plate, reduce the stress on the external pipes or joints, and ensure the sealing of the pipes or joints.

[0113] The utility model also provides an energy storage device, which includes the above-mentioned direct cooling system and at least one battery module, and the cold plate assembly is in contact with at least one wall surface of the battery module.

[0114] According to the energy storage device of the utility model, the energy storage device includes the aforementioned direct cooling system, and the direct cooling system includes the aforementioned cold plate assembly. By arranging protective mechanisms at both ends of the heat exchange plate to accommodate external pipes or joints, the external pipes or joints will not protrude from the heat exchange plate. The length of the heat exchange plate can be the same as or slightly larger than the size of the multiple battery modules supported thereon, and the structure is more compact, reducing the space required for installing the heat exchange plate in the energy storage device. The installation of the heat exchange plate can be achieved by supporting the reinforcing mechanism under the protective mechanism on the mounting frame, and the reinforcing mechanism can strengthen the strength of the two ends of the heat exchange plate, reduce the stress on the external pipes or joints, and ensure the sealing of the pipes or joints.

[0115] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

[0116] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "component" and the like appearing herein may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" and the like appearing herein may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

Claims

1. A cold plate assembly, the cold plate assembly being used for an energy storage device, characterized in that: The cold plate assembly comprises: A heat exchange plate, wherein at least one channel is provided inside the heat exchange plate and penetrates the heat exchange plate along a first direction, at least one end of the channel is used to connect to an external pipe or a joint, at least one protective mechanism is provided at both ends of the heat exchange plate along the first direction, and a reinforcing mechanism is formed below the protective mechanism, and the protective mechanism is used to accommodate the external pipe or the joint.

2. The cold plate assembly according to claim 1, characterized in that At least one protrusion is arranged between two protection mechanisms on the same end of the heat exchange plate or on both sides of the protection mechanism, and the channel is arranged between two adjacent protrusions along a second direction perpendicular to the first direction.

3. The cold plate assembly according to claim 2, characterized in that At least two of the channels are provided inside the heat exchange plate, and the cold plate assembly further comprises at least one elbow, at least a portion of which is within the protection mechanism and communicates with the ends of the two channels.

4. The cold plate assembly according to claim 3, characterized in that The bent pipe includes two first pipe segments and a second pipe segment, one end of the second pipe segment is connected to one of the first pipe segments, the other end of the second pipe segment is connected to another of the first pipe segments, one of the first pipe segments is connected to one of the channels, and the other of the first pipe segments is connected to the other of the channels.

5. The cold plate assembly according to claim 3, characterized in that Along the first direction, the elbow is located within the outer contour of the heat exchange plate.

6. The cold plate assembly according to claim 3, characterized in that The cold plate assembly includes at least two heat exchange plates, at least two heat exchange plates are spliced ​​with each other, and the channels of the two heat exchange plates are connected through the elbow.

7. The cold plate assembly according to claim 6, characterized in that The cold plate assembly also includes a first main pipe, which is connected to one of the channels. The first main pipe includes a straight pipe section. There is an avoidance position between the raised portion at the same end as the first main pipe and the end of the reinforcing mechanism. The straight pipe section passes through the avoidance position of the plurality of heat exchange plates and the protective mechanism to connect to an external pipe or joint.

8. The cold plate assembly according to claim 7, characterized in that At least two of the heat exchange plates include a first heat exchange plate and a second heat exchange plate. Along the second direction, the first heat exchange plate is located at one end of the cold plate assembly, and the second heat exchange plate is located at the other end of the cold plate assembly. The cold plate assembly further includes a first joint, a second main pipe and a second joint, wherein the first main pipe is connected to the first heat exchange plate and communicated with one of the channels, the second main pipe is connected to the second heat exchange plate and communicated with one of the channels, the first main pipe is connected to the first joint, and the second main pipe is connected to the second joint. One of the channels of one of the two adjacent heat exchange plates is connected to one of the channels of the other one through the elbow, and the elbow connects the two channels of the heat exchange plates.

9. The cold plate assembly according to claim 1, characterized in that The heat exchange plate has a weight-reducing channel separated from each of the channels, and the weight-reducing channel extends through the heat exchange plate along the first direction.

10. The cold plate assembly according to claim 9, characterized in that The cold plate assembly further includes a heating element, the heating element comprising: A first heating element disposed in the weight reduction channel, and / or A second heating element is disposed below the reinforcing mechanism, and the second heating element is attached to the reinforcing mechanism.

11. The cold plate assembly according to claim 1, characterized in that The cold plate assembly further comprises a heat transfer member, which is in contact with or integrally formed with the heat exchange plate, and is used for detachably sliding connection with the battery module.

12. A direct cooling system, characterized in that: The direct cooling system comprises: The cold plate assembly according to any one of claims 1 to 10, used to support and cool a battery module; A refrigeration unit is connected to the cold plate assembly to transport a refrigerant to the cold plate assembly.

13. An energy storage device, characterized in that: The direct cooling system according to claim 12 further comprises at least one battery module, wherein the cold plate assembly contacts at least one wall surface of the battery module.

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