Battery rack and energy storage device

Abstract

The utility model discloses a battery rack and an energy storage device. The battery rack is used for the energy storage device, the energy storage device is provided with a battery module, and the battery rack comprises a frame and a cold plate assembly; a bracket extending in the second direction is arranged at the end, in the first direction, of the frame, the bracket at least comprises a bracket vertical wall and a bracket horizontal wall, the bracket horizontal wall is connected to the bracket vertical wall, and the first direction is perpendicular to the second direction; the cold plate assembly is lapped and detachably connected to the horizontal wall of the bracket, and is used for supporting and being in contact connection with the battery module, so that the temperature of the battery module can be adjusted. Therefore, the cold plate assembly is used for supporting the battery module, so that the cold plate assembly can effectively cool the battery cell group; the bracket is high in strength, so that the battery can be more stably supported; in addition, the cold plate assembly is detachably connected to the horizontal wall of the bracket, and when the cold plate assembly goes wrong, the cold plate assembly can be independently detached and replaced. The battery module space occupied by the cold plate assembly can be reduced, and the energy density of the battery module is improved.

Description

Technical Field

[0001] The utility model relates to the field of energy storage devices, in particular to a battery rack and an energy storage device. Background Art

[0002] The existing energy storage device includes a box body, a battery rack arranged in the box body, and a battery module supported by the battery rack.

[0003] There are two main ways to dissipate heat in traditional battery modules.

[0004] The first is air cooling, which uses a fan designed inside the battery box to create forced convection to remove heat from the surface of the battery module. The air cooling method is not ideal for the rapid temperature rise caused by high current charging and discharging of users.

[0005] The second method is to set up a liquid cooling channel inside the module to remove the heat generated by the module through circulation.

[0006] In the above two heat dissipation methods, the relevant heat dissipation device (for example, the fan of the first method and the liquid cooling heat dissipation channel of the second method) is integrated with the battery box. The battery module is directly supported on the battery rack. In this way, when there is a problem with the heat dissipation device, the entire battery module needs to be replaced, which has a high replacement cost and low economic benefits. On the other hand, the heat dissipation device occupies the space of the battery box to a certain extent, and the energy density of the battery module is low.

[0007] To this end, the utility model provides a battery rack and an energy storage device to at least partially solve the above problems. Utility Model Content

[0008] 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.

[0009] In order to at least partially solve the above technical problems, the utility model provides a battery rack, which is used for an energy storage device, the energy storage device has a battery module, and the battery rack includes:

[0010] A frame, wherein an end of the frame along the first direction is provided with a bracket extending along the second direction, the bracket at least comprising a bracket vertical wall and a bracket horizontal wall, the bracket horizontal wall being connected to the bracket vertical wall, and the first direction is perpendicular to the second direction;

[0011] The cold plate assembly is overlapped and detachably connected to the horizontal wall of the bracket, and is used to support and contact the battery module to adjust the temperature of the battery module.

[0012] According to the battery rack of the utility model, the cold plate assembly is used to support the battery module, so that the cold plate assembly can effectively cool the battery cell group; the bracket is strong and can support the battery more stably; in addition, the cold plate assembly can be detachably connected to the horizontal wall of the bracket, and when a problem occurs with the cold plate assembly, the cold plate assembly can be removed and replaced separately; the space occupied by the cold plate assembly in the battery module can be reduced, thereby improving the energy density of the battery module.

[0013] Optionally, the framework includes:

[0014] a column, the column being connected to the bracket;

[0015] a base, the base being connected to the bottom end of the column;

[0016] A crossbeam, the length direction of which is parallel to the first direction, the crossbeam is connected to the column and is located above the bracket;

[0017] A longitudinal beam, wherein the length direction of the longitudinal beam is parallel to the second direction, the longitudinal beam is connected to the column, and is located above the bracket.

[0018] Optionally, the battery rack further comprises a reinforcing plate connected to the bracket vertical wall and the bracket horizontal wall.

[0019] Optionally, the cold plate assembly includes at least two heat exchange plates, and the at least two heat exchange plates are spliced ​​along the second direction.

[0020] 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.

[0021] The heat exchange plate includes a first channel and a second channel separated from each other, and the cold plate assembly also includes a first joint, a first main pipe, a second main pipe and a second joint, the first main pipe is connected to the first heat exchange plate and communicates with the first channel, the second main pipe is connected to the second heat exchange plate and communicates with the second channel, the first main pipe is connected to the first joint, and the second main pipe is connected to the second joint.

[0022] The first channel of one of two adjacent heat exchange plates is communicated with the second channel of the other, and the first channel of the heat exchange plate is communicated with the second channel.

[0023] Optionally, the cold plate assembly further includes a bend pipe, and the first channel of one of two adjacent heat exchange plates is connected to the second channel of the other through the bend pipe, and the bend pipe connects the first channel and the second channel of the heat exchange plate.

[0024] Optionally, at least one channel is provided inside the heat exchange plate and passes through the heat exchange plate along the first direction, and 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 the external pipe or joint.

[0025] Optionally, the battery rack further includes a partition plate, and the partition plates are arranged at the upper end and the lower end of the frame.

[0026] Optionally, the cold plate assembly includes a top cold plate assembly and a bottom cold plate assembly, wherein the bottom cold plate assembly is located above the partition plate at the bottom end of the battery rack, and the top cold plate assembly is located below the partition plate at the top of the battery rack.

[0027] The utility model also provides an energy storage device, which includes the above-mentioned battery rack.

[0028] According to the battery rack of the utility model, the cold plate assembly is used to support the battery module, so that the cold plate assembly can effectively cool the battery cell group; the bracket is strong and can support the battery more stably; in addition, the cold plate assembly can be detachably connected to the horizontal wall of the bracket, and when a problem occurs with the cold plate assembly, the cold plate assembly can be removed and replaced separately; the space occupied by the cold plate assembly in the battery module can be reduced, thereby improving the energy density of the battery module. 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 box of an energy storage device, wherein the wall panels are not shown;

[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 3 A perspective schematic diagram of a cross-sectional view of a box body of an energy storage device and a cold plate assembly connected together, wherein the wall panel is not shown;

[0034] Figure 5for Figure 1 A three-dimensional schematic diagram of a cold plate assembly of an energy storage device;

[0035] Figure 6 for Figure 5 Another three-dimensional schematic diagram of a cold plate assembly of an energy storage device;

[0036] Figure 7 for Figure 5 A three-dimensional schematic diagram of a heat exchange plate of a cold plate assembly of an energy storage device;

[0037] Figure 8 for Figure 7 Another three-dimensional schematic diagram of a heat exchange plate of a cold plate assembly of an energy storage device; and

[0038] Fig. 9 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.

[0039] Description of Reference Numerals

[0040] 100: box body; 101: column; 102: partition wall; 103: bracket; 104: first bracket; 105: second bracket; 106: bracket horizontal wall; 107: reinforcement plate; 108: bracket vertical wall; 110: base; 111: bottom cross beam; 112: bottom longitudinal beam; 113: floor; 117: fork groove; 118: cross beam; 119: longitudinal beam; 120: side; 121: top wall; 122: side wall; 123: end wall; 135: first pipe section; 136: second pipe section; 141: heat exchange plate; 142: body; 143: first protrusion; 144: heat exchange plate; 145: heat exchange plate; 146: heat exchange plate; 147: heat exchange plate; 148: heat exchange plate; 149: heat exchange plate; 150: heat exchange plate; 151: heat exchange plate; 152: heat exchange plate; 153: heat exchange plate; 154: heat exchange plate; 155: heat exchange plate; 156: heat exchange plate; 157: heat exchange plate; 158: heat exchange plate; 159: heat exchange plate; 160: heat exchange plate; 161: heat exchange plate; 162: heat exchange plate; 163: heat exchange plate; 164: heat exchange plate; 165: heat exchange plate; 166: heat exchange plate; 167: heat exchange plate; 168: heat exchange plate; 169: heat exchange plate; 170: heat exchange plate; 171: heat exchange plate; 172: heat exchange plate; 173: heat exchange plate; 174: heat exchange plate; 175: heat exchange plate; 176: heat exchange plate; 177: heat exchange plate; 4: second raised portion; 145: third raised portion; 146: bottom plate portion; 147: first channel; 148: second channel; 150: first heat exchange plate; 151: second heat exchange plate; 152: first joint; 153: second joint; 154: first main pipe; 155: second main pipe; 156: elbow; 157: top cold plate assembly; 158: bottom cold plate assembly; 160, battery module; 206, channel; 207: external pipeline; 208: recessed portion; 209: first recessed portion; 210: second recessed portion; 212: connecting pipe section; 213: straight pipe section. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] The utility model provides a battery rack. The battery rack 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 160 of the energy storage device is directly overlapped to the cold plate assembly. In this way, the temperature of the battery module 160 can be effectively adjusted.

[0046] Please refer to Figures 1 to 9 The energy storage device includes a box body 100. The box body 100 includes a top wall 121, a side part 120 and a base 110. The side part 120 includes a side wall 122 and an end wall 123. The top wall 121, the side wall 122, the end wall 123 and the base 110 form a substantially rectangular parallelepiped structure. Among them, along the width direction of the box body 100, the side wall 122 is located at the side end of the box body 100. Along the length direction of the box body 100, the end wall 123 is located at the end of the box body 100. The top wall 121 is located at the top of the box body 100. The base 110 is located at the bottom end of the box body 100.

[0047] Herein, the width direction of the box body 100 is the first direction D1, and the length direction of the box body 100 is the second direction D2.

[0048] 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.

[0049] Preferably, if Figures 1 to 4As shown, the base 110 includes a bottom longitudinal beam 112 and a bottom cross beam 111. The length direction of the bottom longitudinal beam 112 is parallel to the length direction of the box body 100. The length direction of the bottom cross beam 111 is parallel to the width direction of the box body 100. Along the width direction of the box body 100, the bottom longitudinal beam 112 is located at the side end of the box body 100. Along the width direction of the box body 100, the bottom cross beam 111 is located at the end of the box body 100. There are two bottom longitudinal beams 112. There are two bottom cross beams 111. The two bottom longitudinal beams 112 and the two bottom cross beams 111 form a substantially rectangular base frame. As a result, the strength of the base 110 is large.

[0050] like Figure 1 and Figure 2 As shown, the base 110 further includes a fork slot 117. The fork slot 117 can be a fork slot of an existing container, which will not be described in detail here.

[0051] The energy storage device also includes fasteners (such as bolts). Please refer to Figures 2 to 4 The box 100 includes a column 101 and a wall panel. The length direction of the column 101 is parallel to the vertical direction. The top end of the column 101 is connected to the top wall 121 through a fastener. The bottom end of the column 101 is connected to the base 110 through a fastener. The wall panel is attached to the column 101 to form a side wall 122 and an end wall 123.

[0052] Preferably, please continue to refer to Figures 2 to 4 The box 100 further includes a partition wall 102. The plane where the partition wall 102 is located is perpendicular to the vertical direction. The partition wall 102 is located inside the box 100. In the vertical direction, the partition wall 102 is located between the top wall 121 and the base 110. In this way, the partition wall 102 divides the internal space of the box 100 into an electrical room and a battery room.

[0053] Please refer to Figures 2 to 9 , the energy storage device also includes a direct cooling system. The direct cooling system includes a battery rack located in the battery room. The battery rack includes a frame and a cold plate assembly. The frame includes the portion of the aforementioned column 101 located in the battery room, the aforementioned base 110, a longitudinal beam 119 and a cross beam 118. The length direction of the longitudinal beam 119 is parallel to the length direction of the bottom longitudinal beam 112. The length direction of the cross beam 118 is parallel to the length direction of the bottom cross beam 111. Along the length direction of the box body 100, the cross beam 118 is located at the end of the box body 100. Along the width direction of the box body 100, the longitudinal beam 119 is located at the side end of the box body 100. In the vertical direction, the cross beam 118 is located at the longitudinal beam 119. The longitudinal beam 119 and the cross beam 118 are both connected to the top of the column 101. The longitudinal beam 119 and the cross beam 118 are both located below the partition wall 102. As a result, the strength of the battery rack is large.

[0054] like Figures 2 to 4 ,as well as Fig. 9As shown, the battery rack is located at the battery room. The battery rack also includes a bracket 103. In the vertical direction, the bracket 103 is located between the crossbeam 118 and the base 110. In the vertical direction, the bracket 103 is located between the longitudinal beam 119 and the base 110. The bracket 103 is a long strip structure. The length direction of the bracket 103 is parallel to the length direction of the longitudinal beam 119. The bracket 103 is connected to the column 101 by a fastener. In this way, along the width direction of the box 100, the bracket 103 is located at the side 120 of the box 100. Along the length direction of the box 100, each bracket 103 extends from one end of the battery rack to the other end. In this way, the bracket 103 is a through structure. The bracket 103 can also be riveted to the column 101 by rivets. In this way, the connection strength between the bracket 103 and the column 101 can be further increased. In this way, the strength of the battery rack can be increased.

[0055] Please continue to refer to Figures 2 to 4 , 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 cold plate assembly can be stably supported.

[0056] Preferably, if Figure 2 As shown, the bracket 103 at least includes a bracket vertical wall 108 and a bracket horizontal wall 106. The plane where the bracket vertical wall 108 is located is perpendicular to the first direction D1. The plane where the bracket horizontal wall 106 is located is perpendicular to the vertical direction. The bracket horizontal wall 106 is connected to the top of the bracket vertical wall 108. Along the first direction D1, the bracket horizontal wall 106 is located on the inner side of the bracket vertical wall 108 close to the center of the battery rack. The cold plate assembly is overlapped to the bracket horizontal wall 106. The cold plate assembly is detachably connected to the bracket horizontal wall 106. As a result, the bracket 103 has great strength and can stably support the cold plate assembly.

[0057] In this embodiment, the cold plate assembly is used to support the battery module, so that the cold plate assembly can effectively cool the battery cell group; the bracket is strong and can support the battery more stably; in addition, the cold plate assembly can be detachably connected to the horizontal wall of the bracket, and when a problem occurs with the cold plate assembly, the cold plate assembly can be removed and replaced separately; the space occupied by the cold plate assembly in the battery module can be reduced, thereby improving the energy density of the battery module.

[0058] Preferably, if Figure 2As shown, the bracket 103 further includes a reinforcing plate 107. The reinforcing plate 107 is connected to the bracket vertical wall 108 and the bracket horizontal wall 106. Thus, the strength of the bracket 103 is great.

[0059] Please refer to Figures 2 to 4 , the cold plate assembly is located in the box body 100. The cold plate assembly is used to support and contact the battery module 160 to be connected later, so as to be able to adjust the temperature of the battery module 160 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.

[0060] 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.

[0061] 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 7 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.

[0062] like Figure 7 and Figure 8 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.

[0063] Please continue to refer to Figure 7 and Figure 8Along 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] like Figure 7 and Figure 8 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.

[0068] 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.

[0069] 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.

[0070] In an embodiment not shown, the heat exchange plate may also be provided with only one channel.

[0071] Please return Figures 2 to 4 , 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.

[0072] 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.

[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 7 and Figure 8 As 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 Figures 2 to 9As 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 module 160 described later. In this way, the battery rack can support a larger number of battery modules 160, and the energy storage device provided with the battery rack has a large storage capacity.

[0076] Preferably, if Figures 2 to 6 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 160.

[0077] Please continue to refer to Figure 5 and Figure 6 , 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 5As 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 5 and Figure 6As 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] Please return Figure 5 and Figure 6 In 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] Preferably, the battery rack further includes a battery module 160. The battery module 160 is located in the box 100. The wall surface of the battery module 160 contacts the cold plate assembly. For example, the battery module 160 is placed on the cold plate assembly so that the cold plate assembly supports the battery module 160. At this time, the battery module 160 contacts the cold plate assembly. In this way, the cold plate assembly can more effectively adjust the temperature of the battery module 160.

[0091] Preferably, please refer to Figures 2 to 4The energy storage device further includes a partition plate (not shown). The partition plate can be insulated and heat-insulated (for example, the partition plate is a bakelite plate). The partition plates are arranged at the top and the bottom of the battery rack.

[0092] Specifically, the partition plate includes a bottom partition plate and a top partition plate. The base 110 includes a floor 113. The floor 113 can be laid on the bottom cross beam 111 and the bottom longitudinal beam 112 to close the bottom end of the box 100. The cold plate assembly includes a top cold plate assembly 157 and a supporting cold plate assembly. The battery module 160 is overlapped to the supporting cold plate assembly. The supporting cold plate assembly (bottom cold plate assembly 158) located at the bottom end of the battery rack is located above the bottom partition plate. The bottom partition plate is overlapped to the floor 113.

[0093] The top partition plate is located below the partition wall 102. The top partition plate is located between the top cold plate assembly 157 and the partition wall 102. The top cold plate assembly 157 is located above the uppermost battery module 160. Thus, the partition plate can reduce the heat and electrical energy in the battery chamber from being transferred to the upper or lower part of the battery chamber.

[0094] Preferably, the box body 100 does not include top corner fittings and bottom corner fittings of the container.

[0095] The utility model also provides an energy storage device, the energy storage device having the aforementioned battery rack.

[0096] According to the battery rack of the utility model, the cold plate assembly is used to support the battery module, so that the cold plate assembly can effectively cool the battery cell group; the bracket is strong and can support the battery more stably; in addition, the cold plate assembly can be detachably connected to the horizontal wall of the bracket, and when a problem occurs with the cold plate assembly, the cold plate assembly can be removed and replaced separately; the space occupied by the cold plate assembly in the battery module can be reduced, thereby improving the energy density of the battery module.

[0097] 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.

[0098] 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 battery rack, the battery rack being used for an energy storage device, the energy storage device having a battery module, characterized in that: The battery rack comprises: A frame, wherein an end of the frame along the first direction is provided with a bracket extending along the second direction, the bracket at least comprising a bracket vertical wall and a bracket horizontal wall, the bracket horizontal wall being connected to the bracket vertical wall, the first direction being perpendicular to the second direction; A cold plate assembly is overlapped and detachably connected to the horizontal wall of the bracket, and the cold plate assembly is used to support and contact the battery module to adjust the temperature of the battery module.

2. The battery rack according to claim 1, characterized in that: The framework includes: a column connected to the bracket; a base connected to the bottom end of the column; A crossbeam, wherein the length direction of the crossbeam is parallel to the first direction, the crossbeam is connected to the column and is located above the bracket; A longitudinal beam, wherein the length direction of the longitudinal beam is parallel to the second direction, the longitudinal beam is connected to the column and is located above the bracket.

3. The battery rack according to claim 1, characterized in that: The battery rack further includes a reinforcing plate connected to the bracket vertical wall and the bracket horizontal wall.

4. The battery rack according to claim 1, characterized in that: The cold plate assembly includes at least two heat exchange plates, and the at least two heat exchange plates are spliced ​​along the second direction.

5. The battery rack according to claim 4, 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 heat exchange plate includes a first channel and a second channel separated from each other, and the cold plate assembly also includes a first joint, a first main pipe, a second main pipe and a second joint, the first main pipe is connected to the first heat exchange plate and communicates with the first channel, the second main pipe is connected to the second heat exchange plate and communicates with the second channel, the first main pipe is connected to the first joint, and the second main pipe is connected to the second joint. The first channel of one of two adjacent heat exchange plates is communicated with the second channel of the other one, and the first channel and the second channel of the heat exchange plates are communicated with each other.

6. The battery rack according to claim 5, characterized in that: The cold plate assembly further includes a bent pipe, through which the first channel of one of two adjacent heat exchange plates is connected to the second channel of the other, and the bent pipe connects the first channel and the second channel of the heat exchange plates.

7. The battery rack according to claim 5, characterized in that: At least one channel penetrating the heat exchange plate along a first direction is provided inside the heat exchange plate, 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.

8. The battery rack according to claim 1, characterized in that: The battery rack further comprises a partition plate, and the partition plates are arranged at the upper end and the lower end of the frame.

9. The battery rack according to claim 8, characterized in that: The cold plate assembly includes a top cold plate assembly and a bottom cold plate assembly, wherein the bottom cold plate assembly is located above the partition plate at the bottom end of the battery rack, and the top cold plate assembly is located below the partition plate above the battery rack.

10. An energy storage device, characterized in that: The energy storage device comprises the battery rack according to any one of claims 1 to 9.

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