Energy storage device

Abstract

The invention discloses energy storage equipment. The energy storage equipment comprises a first shell, a first separator, a battery module and an electrical module, the first separator is connected to the first housing. The first separator divides the first housing into a first chamber and a second chamber which are arranged along a first direction. The battery module is located in one of the first chamber and the second chamber. The electrical module is located in the other one of the first cavity and the second cavity, and the electrical module is electrically connected to the battery module. The electrical module and the battery module are located in different cavities, and heat generated by the electrical module is isolated from heat generated by the battery module, so that heat dissipation of the battery module is improved.

Description

Technical Field

[0001] This application relates to the technical field of energy storage, and particularly to an energy storage device. Background Art

[0002] Currently, energy storage devices are widely used in fields such as intelligent energy storage devices. When in use, energy storage devices generate a large amount of heat and need to dissipate heat. Summary of the Invention

[0003] In view of this, it is necessary to provide an energy storage device to improve heat dissipation.

[0004] An embodiment of this application provides an energy storage device, which includes a first housing, a first partition, a battery module, and an electrical module. The first partition is connected to the first housing, and the first partition divides the first housing into a first chamber and a second chamber arranged along a first direction. The battery module is located in one of the first chamber and the second chamber. The electrical module is located in the other of the first chamber and the second chamber, and the electrical module is electrically connected to the battery module. By having the electrical module and the battery module in different chambers, the heat generated by the electrical module and the heat generated by the battery module are isolated, which is beneficial to improving the heat dissipation of the battery module.

[0005] In one or more of the above optional embodiments, the energy storage device includes a liquid cooling unit, and the liquid cooling unit includes a driving device. The driving device is located in the other of the first chamber and the second chamber, and the battery module, the electrical module, and the driving device are arranged along the first direction.

[0006] In one or more of the above optional embodiments, the energy storage device includes a first fan. The first fan and the battery module are located in the first chamber, and the first fan is configured to drive a first refrigerant to flow in the first chamber, which is beneficial to heat dissipation. Or, the first fan and the battery module are located in the second chamber, and the first fan is configured to drive the first refrigerant to flow in the second chamber, which is beneficial to heat dissipation.

[0007] In one or more of the above optional embodiments, the energy storage device includes a second housing, which is arranged inside the first housing. The second housing and the first partition are partial components forming a first space, and the battery module is arranged in the first space. The first space is isolated from the outside, which can reduce the first refrigerant in the first space from flowing to the outside and reduce the impact on heat dissipation.

[0008] In one or more of the above optional embodiments, the second housing includes a first opening and a second opening oppositely arranged along a second direction. The first opening and the second opening are formed by the second housing and the first partition, and the first direction is perpendicular to the second direction. The energy storage device includes a heat exchange component, which closes at least part of the second opening. The first housing includes a first wall, and the first wall closes the first opening; or, the energy storage device includes a first connecting wall, and the first connecting wall closes the first opening.

[0009] In one or more of the above optional embodiments, the second housing includes a first side wall, a second side wall, and a second housing top wall. The second housing top wall and the first partition are arranged in a first direction, and the second housing top wall connects the first side wall and the second side wall. The first side wall, the second side wall, the second housing top wall, and the first partition form a first opening and a second opening. The heat exchange member is connected to the first side wall, the second side wall, the second housing top wall, and the first partition and closes the second opening. The first connecting wall is connected to the first side wall, the second side wall, the second housing top wall, and the first partition and closes the first opening. Alternatively, the first wall is connected to the first side wall, the second side wall, the second housing top wall, and the first partition and closes the first opening, so that the first refrigerant in the first space is isolated from the space outside the first space.

[0010] In one or more of the above optional embodiments, a first channel is included, the first channel is located between the battery module and the first partition, and the first fan is located in the first channel, which is beneficial for the first fan to drive the first refrigerant.

[0011] In one or more of the above optional embodiments, the energy storage device includes a second partition, the second partition and the first partition are spaced apart in a first direction, and the first partition and the second partition are part of the components forming the first channel.

[0012] In one or more of the above optional embodiments, the first partition includes a first horizontal portion and a first bent portion, and the first bent portion extends away from the battery module. The second partition includes a second horizontal portion and a second bent portion, and the second bent portion extends away from the battery module. The first bent portion and the second bent portion guide the first refrigerant to flow away from the battery module, reduce the first refrigerant from flowing directly towards the heat exchange member in a second direction, and reduce the first refrigerant from flowing towards the first channel entrance along the first channel after colliding with the heat exchange member.

[0013] In one or more of the above optional embodiments, the first partition includes a first horizontal portion and a first bent portion, and the first bent portion extends away from the battery module. The second partition includes a second bent portion, and the second bent portion extends away from the battery module. The first bent portion and the second bent portion guide the first refrigerant to flow away from the battery module, reduce the first refrigerant from flowing directly towards the heat exchange member in a second direction, and reduce the first refrigerant from flowing towards the first channel entrance along the first channel after colliding with the heat exchange member.

[0014] In one or more of the above optional embodiments, the energy storage device includes at least one cooling component, the battery module and the cooling component are arranged in a first direction, and the cooling component includes a first flow channel. The liquid cooling unit includes a pipeline, a part of the pipeline is located in the first chamber, a part of the pipeline is located in the second chamber, and the pipeline connects the first flow channel and the driving device.

[0015] In one or more of the above optional embodiments, the cooling assembly includes a refrigerant channel, and there is a gap between the battery module and the first housing, and the gap communicates the first channel and the refrigerant channel.

[0016] In one or more of the above optional embodiments, the gap includes a first gap and a second gap. Along the second direction, the first gap and the second gap are located on both sides of the battery module, and the first direction is perpendicular to the second direction. The refrigerant channel communicates the first gap and the second gap, and the first channel communicates the first gap and the second gap.

[0017] In one or more of the above optional embodiments, the refrigerant channel includes a first opening of the refrigerant channel and a second opening of the refrigerant channel. The second opening of the refrigerant channel and the first opening of the refrigerant channel are arranged along the second direction, and the first direction is perpendicular to the first direction.

[0018] In one or more of the above optional embodiments, the cooling assembly includes a cooling member and a covering member. The battery module is connected to the cooling member, and the battery module and the cooling member are arranged along the first direction. The cooling member includes a first flow channel, and the refrigerant channel is located between the cooling member and the covering member.

[0019] In one or more of the above optional embodiments, the cooling assembly includes a first bracket that supports the battery module, and the cooling member, the first bracket, and the covering member are at least part of the components that form the refrigerant channel.

[0020] In one or more of the above optional embodiments, the first bracket includes a first support member and a second support member that are spaced apart. The first support member is fixed to the cooling member, and the second support member is fixed to the cooling member.

[0021] In one or more of the above optional embodiments, the cooling assembly includes at least one second bracket, and the second bracket, the first support member, and the second support member form at least one third opening. The covering member covers the third opening. The covering member covers the third opening, reducing the situation where air flows out of the refrigerant channel through the third opening, resulting in a reduction in the heat dissipation effect.

[0022] In one or more of the above optional embodiments, at least part of the covering member is located at the third opening, reducing the situation where air flows out of the refrigerant channel through the third opening, resulting in a reduction in the heat dissipation effect.

[0023] In one or more of the above optional embodiments, along the first direction, the second bracket is connected to the side of the first bracket away from the cooling member. The second bracket can protect the first bracket. During transportation or assembly, the second bracket can contact external handling equipment, reducing the force on the first bracket, the battery module, and the cooling member.

[0024] In one or more of the above optional embodiments, along the first direction, the covering member does not extend beyond the second bracket. Along the first direction, the second bracket is the outermost, and the second bracket can protect the covering member. During transportation or assembly, an external handling device can act on the second bracket to support the weights of the battery module, the cooling member, and the first bracket through the second bracket, reducing the forces on the first bracket, the battery module, and the cooling member, and reducing the risk of deformation of the cooling member caused by the force.

[0025] In one or more of the above optional embodiments, the cooling assembly includes at least two second brackets. One second bracket, the first support member, the second support member, and the cooling member form a second opening of the refrigerant channel, and the other second bracket, the first support member, the second support member, and the cooling member form a first opening of the refrigerant channel.

[0026] In one or more of the above optional embodiments, the covering member abuts against the first bracket, reducing the gap between the covering member and the first bracket and improving heat dissipation.

[0027] In one or more of the above optional embodiments, the covering member abuts against the second bracket, reducing the gap between the covering member and the second bracket and improving heat dissipation.

[0028] In one or more of the above optional embodiments, the covering member abuts against the first bracket and the covering member abuts against the second bracket, reducing the gap between the covering member and the first bracket and reducing the gap between the covering member and the second bracket, further improving heat dissipation.

[0029] In one or more of the above optional embodiments, the cooling assembly includes fins. The fins are located between the cooling member and the covering member, and the fins divide the refrigerant channel into multiple sub-channels. The fins can increase the contact area between the air in the refrigerant channel and the cooling member, and the heat of the air in the refrigerant channel is transferred to the cooling member through the fins, which is beneficial to heat dissipation.

[0030] In one or more of the above optional embodiments, the thermal conductivity of the covering member is less than 0.5 W / m·K, which can reduce the heat exchange between the air in the refrigerant channel and the outside of the energy storage module.

[0031] In one or more of the above optional embodiments, the covering member includes at least one of foam, polyurethane, epoxy resin, aerogel, and foaming agent.

[0032] In one or more of the above optional embodiments, the battery module includes a plurality of battery cell groups arranged along the third direction. Each battery cell group includes at least two battery cells arranged along the second direction. The energy storage device includes a plurality of first side covers. Along the second direction, the battery cell group is disposed between two first side covers, and the battery cell group and the two first side covers are fixed. The first side cover is fixedly connected to two third brackets.

[0033] In one or more of the above optional embodiments, along the first direction, the third bracket includes a top wall facing away from the cooling member, and the first side cover is fixed to the top wall. When the battery cell expands, the expansion force received by the first side cover can be transmitted to the third bracket through the top wall, reducing the expansion force received by the first side cover.

[0034] In one or more of the above optional embodiments, the energy storage device includes a heat exchange member, and the heat exchange member includes a first heat exchange channel and a second heat exchange channel that are separately arranged. The first heat exchange channel is communicated with the refrigerant channel, and the second heat exchange channel is configured to provide a flow path for the second refrigerant.

[0035] In one or more of the above optional embodiments, the second heat exchange channel is communicated with the outside of the energy storage device, and the second heat exchange channel is configured to allow the air outside the energy storage device to flow therein. The second refrigerant includes the air outside the energy storage device.

[0036] In one or more of the above optional embodiments, the first heat exchange channel includes a first end and a second end arranged along the first direction. The first end is closed, and the second end is communicated with the first channel. The first heat exchange channel includes a first heat exchange opening, and the first heat exchange opening is communicated with the second gap. It can reduce the air flowing from the first end to the inlet and flowing from the outlet to the external environment, which is beneficial to heat dissipation.

[0037] In one or more of the above optional embodiments, the second heat exchange channel includes a third end and a fourth end arranged along the first direction. The second heat exchange channel extends along the first direction. The third end is configured to allow the second refrigerant to pass through, and the fourth end is closed. The second heat exchange channel includes a second heat exchange opening, and the second heat exchange opening is configured to allow the second refrigerant to pass through. It can reduce the outside air flowing into the second housing from the fourth end, which is beneficial to heat dissipation.

[0038] In the above energy storage device, the electrical module and the battery module are located in different chambers, and the heat generated by the electrical module and the heat generated by the battery module are isolated, which is beneficial to improving the heat dissipation of the battery module. Description of the Drawings

[0039] Figure 1 The structural schematic diagram of the energy storage device in some embodiments is shown.

[0040] Figure 2 The exploded schematic diagram of the energy storage device in some embodiments is shown.

[0041] Figure 3 Shown is Figure 1 The sectional schematic diagram of the energy storage device along A-A.

[0042] Figure 4 Shown is Figure 3 The partial enlarged schematic diagram in

[0043] Figure 5 shows Figure 3 a schematic diagram in

[0044] Figure 6 shows Figure 3 a schematic diagram of another perspective in

[0045] Figure 7 shows a schematic diagram of an energy storage device in some other embodiments.

[0046] Figure 8 shows Figure 3 a schematic diagram in an embodiment.

[0047] Figure 9 shows Figure 7 a schematic diagram in an embodiment.

[0048] Figure 10 shows a schematic diagram in some other embodiments.

[0049] Figure 11 shows an exploded schematic diagram of an energy storage device in some other embodiments.

[0050] Figure 12 shows a structural schematic diagram of a part of an energy storage device in some embodiments.

[0051] Figure 13 shows Figure 12 an exploded schematic diagram of a part of an energy storage device in

[0052] Figure 14 shows Figure 12 a structural schematic diagram of a part of an energy storage device from another perspective in

[0053] Figure 15 shows Figure 12 a structural schematic diagram of a part of an energy storage device in

[0054] Figure 16 shows a cross-sectional schematic diagram of a part of an energy storage device in some embodiments.

[0055] Figure 17 shows a structural schematic diagram of a heat exchange component in some embodiments.

[0056] Figure 18 shows a structural schematic diagram of a heat exchange component from another perspective in some embodiments.

[0057] Figure 19 shows a cross-sectional schematic diagram of a heat exchange component in some embodiments.

[0058] Figure 20 shows a structural schematic diagram of a part of a heat exchange component in some embodiments.

[0059] Figure 21 Shows a schematic structural diagram of some of the heat exchange components in some embodiments.

[0060] Figure 22 Shows an exploded schematic diagram of a battery module and a cooling assembly in some embodiments.

[0061] Figure 23 Shows a schematic cross-sectional view of some of the cooling components in some embodiments.

[0062] Figure 24 Shows Figure 23 Some enlarged schematic diagrams in.

[0063] Figure 25 Shows a schematic structural diagram of some of the cooling components, a first bracket, and a second bracket in some embodiments.

[0064] Figure 26 Shows Figure 25 An exploded schematic diagram of some of the cooling components, a first bracket, and a second bracket in.

[0065] Figure 27 Shows a schematic structural diagram of a cooling assembly, a first bracket, a second bracket, and a third bracket in some other embodiments.

[0066] Figure 28 Shows Figure 27 An exploded schematic diagram of a cooling assembly, a first bracket, a second bracket, and a second bracket in.

[0067] Figure 29 Shows a schematic structural diagram of a cooling assembly, a first bracket, a second bracket, and a third bracket in some embodiments.

[0068] Figure 30 Shows a schematic structural diagram of a cooling assembly, a first bracket, a second bracket, and a third bracket from another perspective in some embodiments.

[0069] Figure 31 Shows a schematic structural diagram of a battery module and a cooling assembly in some embodiments.

[0070] Figure 32 Shows Figure 31 Some enlarged schematic diagrams of a part of the battery module and a part of the cooling assembly in.

[0071] Description of the main element symbols:

[0072] Energy storage device 100

[0073] Pressure relief part 100a

[0074] First gap 101

[0075] Second gap 102

[0076] First housing 10

[0077] First housing opening 10a

[0078] Receiving space 10a1

[0079] Second housing opening 10b

[0080] First chamber 10c

[0081] Second chamber 10d

[0082] First receiving chamber 10e

[0083] Second receiving chamber 10f

[0084] First wall 11

[0085] Second wall 12

[0086] Third wall 13

[0087] First housing top wall 14

[0088] First top wall opening 141

[0089] First housing bottom wall 15

[0090] Fourth wall 16

[0091] First beam 17

[0092] Second beam 18

[0093] Support plate 19

[0094] Battery module 20

[0095] Refrigerant channel 20a

[0096] First refrigerant channel opening 201

[0097] Second refrigerant channel opening 202

[0098] Cooling assembly 21

[0099] Cooling element 211

[0100] Second space 211a

[0101] First cooling element 2111

[0102] Second cooling element 2112

[0103] Flow channel inlet 2113

[0104] Flow channel outlet 2114

[0105] Covering part 212

[0106] First bracket 220

[0107] First support member 221

[0108] Second support member 222

[0109] Third support member 223

[0110] Second bracket 230

[0111] Third opening 230a

[0112] Outer shell 240

[0113] Second accommodation space 240a

[0114] First flow channel 21a

[0115] Cell group 20d

[0116] Cell 22

[0117] Heat exchange member 30

[0118] First heat exchange channel 30a

[0119] First end 301

[0120] Second end 302

[0121] First heat exchange opening 310

[0122] Second heat exchange channel 30b

[0123] Third end 303

[0124] Fourth end 304

[0125] Connection port 30c

[0126] Second heat exchange opening 320

[0127] First section 330

[0128] Fixing plate 31

[0129] Inlet 311

[0130] Outlet 312

[0131] Heat exchange member 32

[0132] Frame 33

[0133] First baffle 34

[0134] Third fan 35

[0135] Second baffle 36

[0136] First fan 40

[0137] Second housing 50

[0138] First opening 50a

[0139] Second opening 50b

[0140] First channel 50c

[0141] First channel inlet 50c1

[0142] First channel outlet 50c2

[0143] First space 501

[0144] First side wall 51

[0145] Second side wall 52

[0146] Second housing top wall 54

[0147] Second top wall opening 541

[0148] First convex part 542

[0149] Fin 60

[0150] Third bracket 70

[0151] Connecting recess 70a

[0152] Top wall 71

[0153] First side cover 80

[0154] Connecting convex part 80a

[0155] First partition 103

[0156] First horizontal part 1031

[0157] First bending part 1032

[0158] Electrical module 104

[0159] Second partition 105

[0160] Second horizontal part 1051

[0161] Second bending part 1052

[0162] Liquid cooling unit 110

[0163] Pipeline 110a

[0164] Inflow pipeline 110a1

[0165] Outflow pipeline 110a2

[0166] Driving device 110b

[0167] First connecting wall 120

[0168] Shielding plate 130

[0169] Through hole 130a

[0170] First fin 140

[0171] First direction X

[0172] Second direction Y

[0173] Third direction Z

[0174] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0175] The following specific embodiments are exemplary rather than restrictive. They are intended to provide a basic understanding of the present application and are not intended to identify the key or decisive elements of the present application or to limit the scope to be protected. As long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

[0176] When a component is considered to be "provided on" another component, it can be directly provided on the other component or there may be an intermediate component present at the same time. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present at the same time.

[0177] It can be understood that the term "vertical" is used to describe the ideal state between two components. In the actual production or use state, there may be a state approximately vertical or equal between two components. For example, in combination with numerical description, vertical can refer to the included angle range between two straight lines being between 90° ± 10°, vertical can also refer to the dihedral angle range between two planes being between 90° ± 10°, and vertical can also refer to the included angle range between a straight line and a plane being between 90° ± 10°. The two components described as "vertical" may not be absolute straight lines or planes, and may also be approximately straight lines or planes. From a macroscopic perspective, as long as the overall extension direction is a straight line or a plane, the components can be considered as "straight lines" or "planes".

[0178] As used herein, the terms "vertical", "horizontal", "left", "right", "top", "bottom", "front", "rear" and similar expressions are for illustrative purposes only and are not intended to limit this application.

[0179] Unless otherwise defined, as used herein, the term "plurality" specifically refers to two or more components when describing the number of components.

[0180] Embodiments of the present application provide an energy storage device, including a first housing, a first partition, a battery module, and an electrical module. The first partition is connected to the first housing, and the first partition divides the first housing into a first chamber and a second chamber arranged along a first direction. The battery module is located in one of the first chamber and the second chamber. The electrical module is located in the other of the first chamber and the second chamber, and the electrical module is electrically connected to the battery module. By having the electrical module and the battery module in different chambers, the heat generated by the electrical module and the heat generated by the battery module are isolated, which is beneficial to improving the heat dissipation of the battery module.

[0181] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0182] Please refer to Figures 1 to 3 , an embodiment of the present application provides an energy storage device 100, including a first housing 10 and a battery module 20.

[0183] In some embodiments, the energy storage device 100 includes a first partition 103, and the first partition 103 is connected to the first housing 10. The first partition 103 divides the first housing 10 into a first chamber 10c and a second chamber 10d arranged along a first direction X. The battery module 20 is located in one of the first chamber 10c and the second chamber 10d.

[0184] In some embodiments, the energy storage device 100 includes a battery module 20, and the battery module 20 is located in one of the first chamber 10c and the second chamber 10d.

[0185] In some embodiments, please refer to Figure 3 , the energy storage device 100 includes a plurality of battery modules 20, and the plurality of battery modules 20 are located in one of the first chamber 10c and the second chamber 10d. The present application will be described by taking the energy storage device 100 including a plurality of battery modules 20 as an example.

[0186] In some embodiments, the energy storage device 100 includes an electrical module 104, and the electrical module 104 is electrically connected to the battery module 20. The electrical module 104 is located in the other of the first chamber 10c and the second chamber 10d.

[0187] By having the electrical module 104 and the battery module 20 located in different chambers, the heat generated by the electrical module 104 and the heat generated by the battery module 20 are isolated, which is beneficial to improving the heat dissipation of the battery module 20.

[0188] In some embodiments, the electrical module 104 includes a Battery Management System (BMS). The battery management system is electrically connected to the battery module 20 and is used to control the charging and discharging of the battery module 20.

[0189] In some embodiments, the electrical module 104 includes a Power Conversion System (PCS). The energy storage converter is electrically connected to the battery module 20 to perform AC-DC conversion.

[0190] Please refer to Figure 3 , in some embodiments, the energy storage device 100 includes a liquid cooling unit 110. The liquid cooling unit 110 includes a driving device 110b, and the driving device 110b is located in the other one of the first chamber 10c and the second chamber 10d. The battery module 20, the electrical module 104, and the driving device 110b are arranged along the first direction X.

[0191] In some embodiments, please refer to Figure 3 , the first direction X is the gravity direction, a plurality of battery modules 20 are located in the first chamber 10c, and the electrical module 104 is located in the second chamber 10d. The driving device 110b is located in the second chamber 10d.

[0192] In some embodiments, the first direction X is the gravity direction, a plurality of battery modules 20 are located in the second chamber 10d, and the electrical module 104 is located in the first chamber 10c. The driving device 110b is located in the first chamber 10c.

[0193] Please refer to Figure 22 and Figure 26 , in some embodiments, the energy storage device 100 includes at least one cooling component 21. The battery module 20 and the cooling component 21 are arranged along the first direction X. The cooling component 21 includes a first flow channel 21a, and the liquid cooling unit 110 is configured to supply a flowable refrigerant to the first flow channel 21a.

[0194] In some embodiments, the liquid cooling unit 110 is connected to the first flow channel 21a. The liquid cooling unit 110 transports the flowable refrigerant to the first flow channel 21a through a pipeline. Optionally, the flowable refrigerant includes but is not limited to water, coolant, etc.

[0195] Please refer to Figure 2 and Figure 3, in some embodiments, the liquid cooling unit 110 includes a pipeline 110a. A part of the pipeline 110a is located in the first chamber 10c, and a part of the pipeline 110a is located in the second chamber 10d. The pipeline 110a connects the driving device 110b with the first flow channel 21a.

[0196] In some embodiments, the pipeline 110a includes an inflow pipeline 110a1 and an outflow pipeline 110a2. The driving device 110b drives the flowable refrigerant to flow into the first flow channel 21a from the inflow pipeline 110a1 and flow out of the first flow channel 21a into the outflow pipeline 110a2. The flowable refrigerant can export the heat of the battery module 20 or transfer the heat to the battery module 20.

[0197] Please refer to Figure 3 , in some embodiments, the energy storage device 100 includes a first fan 40. The first fan 40 and a plurality of battery modules 20 are located in the first chamber 10c. The first fan 40 is configured to drive the first refrigerant to flow in the first chamber 10c. Optionally, the first refrigerant includes air.

[0198] In some embodiments, the first fan 40 and a plurality of battery modules 20 are located in the second chamber 10d. The first fan 40 is configured to drive the first refrigerant to flow in the second chamber 10d. Optionally, the first refrigerant includes air.

[0199] In some embodiments, the energy storage device 100 includes a second fan (not shown in the figure). The second fan and the electrical module 104 are located in the same chamber, which can drive the air flow in the chamber to dissipate heat from the electrical module 104. The second fan drives the air in the chamber to exchange heat with the first partition 103, and uses the first partition 103 to dissipate heat from the electrical module 104.

[0200] Please refer to Figure 3 , in some embodiments, the energy storage device 100 includes a first channel 50c. The first channel 50c is located between the plurality of battery modules 20 and the first partition 103. The first fan 40 is located in the first channel 50c, which is beneficial for the first fan 40 to drive the first refrigerant.

[0201] In some embodiments, please refer to Figure 3 , along the first direction X, the first channel 50c is located between the plurality of battery modules 20 and the first partition 103. The first channel 50c is located below the plurality of battery modules 20. In this application, Figure 3 is taken as an example for illustration.

[0202] In some embodiments, along the direction opposite to the first direction X, the first channel 50c is located between the battery module 20 and the first partition 103. The first channel 50c is located above the plurality of battery modules 20.

[0203] In some embodiments, along the first direction X, the first channel 50c is located between the lowermost battery module 20 and the first partition 103.

[0204] Please refer to Figure 3 , in some embodiments, the energy storage device 100 includes a heat exchange member 30, the first housing 10 includes a first wall 11, the first wall 11 and the heat exchange member 30 are arranged along the second direction Y, and the first direction X is perpendicular to the second direction Y.

[0205] In some embodiments, the cooling assembly 21 includes a refrigerant channel 20a. There is a gap between the battery module 20 and the first housing 10, and the gap communicates the first channel 50c and the refrigerant channel 20a.

[0206] In some embodiments, the gap includes a first gap 101 and a second gap 102. Along the second direction Y, the first gap 101 and the second gap 102 are located on both sides of the battery module 20. The refrigerant channel 20a communicates the first gap 101 and the second gap 102, and the first channel 50c communicates the first gap 101 and the second gap 102.

[0207] In some embodiments, along the second direction Y, there is a first gap 101 between the plurality of battery modules 20 and the first wall 11, and there is a second gap 102 between the plurality of battery modules 20 and the heat exchange member 30.

[0208] In some embodiments, the first fan 40 is configured to drive the first refrigerant to flow in the refrigerant channel 20a, the first gap 101, the second gap 102, and the first channel 50c. Through the heat exchange member 30, the first refrigerant can exchange heat with the heat exchange member 30, further improving the heat dissipation efficiency.

[0209] Please refer to Figure 2 and Figure 3 , in some embodiments, along the second direction Y, the first housing 10 includes a first housing opening 10a, and the first housing opening 10a and the first wall 11 are oppositely arranged. The heat exchange member 30 closes at least a part of the first housing opening 10a.

[0210] In some embodiments, the heat exchange member 30 is exposed to the outside of the energy storage device 100, and can directly use the air outside the energy storage device 100 for heat exchange, and export the heat of the battery module 20 to the outside.

[0211] Please refer to Figures 1 to 3 , in some embodiments, the first housing 10 includes a second wall 12 and a third wall 13 arranged along the third direction Z, and the first wall 11 connects the second wall 12 and the third wall 13. Along the third direction Z, the battery module 20 is disposed between the second wall 12 and the third wall 13. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other in pairs.

[0212] In some embodiments, referring to Figure 3 , the first housing 10 includes a fourth wall 16, and the first wall 11 and the fourth wall 16 are arranged along the second direction Y. The fourth wall 16 connects the second wall 12 and the third wall 13.

[0213] In some embodiments, the first housing 10 includes a first housing top wall 14 and a first housing bottom wall 15 arranged along the first direction X. The first wall 11, the second wall 12, the third wall 13, the first housing top wall 14, and the first housing bottom wall 15 form a receiving space 10a1, and the battery module 20 is located in the receiving space 10a1.

[0214] In some embodiments, the heat exchange member 30 closes a part of the first housing opening 10a, and the fourth wall 16 closes the remaining part of the first housing opening 10a.

[0215] In some embodiments, the first wall 11 closes the second housing opening 10b.

[0216] In some embodiments, the first housing 10 includes a plurality of first beams 17 and a plurality of second beams 18. The first beams 17 extend along the first direction X, and the second beams 18 extend along the second direction Y. The second beams 18 are located in the receiving space, and the second beams 18 carry the battery module 20.

[0217] In some embodiments, the first partition member 103 is fixedly connected to the second wall 12 and the third wall 13.

[0218] Referring to Figure 3 and Figure 5 , in some embodiments, the first channel 50c includes a first channel inlet 50c1 and a first channel outlet 50c2, and the first channel inlet 50c1 communicates with the first gap 101. Along the first direction X, the first channel outlet 50c2 is farther from the plurality of battery modules than the first channel inlet 50c1. When the first refrigerant flows from the first channel inlet 50c1 to the first channel outlet 50c2, the direct flow of the first refrigerant along the second direction Y to the heat exchange member 30 is reduced, and the flow of the first refrigerant along the first channel 50c toward the first channel inlet 50c1 after colliding with the heat exchange member 30 is reduced.

[0219] Referring to Figure 3 , Figure 6 and Figure 7 , in some embodiments, the energy storage device 100 includes a second partition member 105. The second partition member 105 and the first partition member 103 are spaced apart along the first direction X. The first partition member 103 and the second partition member 105 serve as part of the components forming the first channel 50c.

[0220] In some embodiments, the first partition member 103 and the second partition member 105 serve as part of the components forming the first channel outlet 50c2.

[0221] Figure 5 Shows Figure 3 In the simplified schematic diagram, in order to better indicate the flow path of the first refrigerant, the sizes of different components are modified, such as the size of the battery module 20 and the refrigerant channel 20a are modified, and Figure 3 It is not a limitation. Along the first direction X, the plurality of battery modules 20 and the first separator 103 are sequentially arranged at intervals. In other embodiments, along the first direction X, the first separator 103 and the plurality of battery modules 20 are sequentially arranged at intervals.

[0222] The present application cools the battery module 20 through the liquid cooling unit 110, and drives the first refrigerant to flow in the refrigerant channel 20a through the first fan 40 to dissipate heat from the energy storage device 100, thereby reducing the temperature of the battery module 20 and improving the heat dissipation efficiency.

[0223] See also Figure 5 , Figure 5 The flow path of the first refrigerant is shown, and the first refrigerant is air. For the convenience of description, the battery module 20 and the refrigerant channel 20a are simplified. The first fan 40 is located in the first channel 50c, driving the air in the first gap 101 to pass through the first channel 50c, and then the air passes through the heat exchange element 30. After passing through the heat exchange element 30, the temperature of the air decreases, passes through the second gap 102, enters the refrigerant channel 20a, and then flows to the first gap 101. The air entering the refrigerant channel 20a dissipates heat from the battery module 20.

[0224] In some embodiments, the first fan 40 and the heat exchange element 30 are both in working state, and the temperature of the first refrigerant is reduced through the heat exchange element 30, thereby dissipating heat from the battery module 20. The driving device 110b delivers the flowable refrigerant to the first flow channel 21a through the pipeline 110a, and the heat of the battery module 20 is taken away or transferred to the battery module 20 through the first flow channel 21a, so that the heat exchange element 30 dissipates heat from the battery module 20, and the flowable refrigerant has the effect of equalizing the temperature of multiple battery modules 20, thereby reducing the temperature difference between different battery modules 20.

[0225] In some embodiments, the liquid cooling unit 110 includes a refrigeration unit (not shown), which can lower the temperature of the flowable refrigerant to enhance the heat dissipation of the battery module 20 .

[0226] See also Figure 11 , Figure 11 and Figure 3The difference lies in that the heat exchange member 30 is not provided. The first housing 10 includes a fourth wall 16, and the first wall 11 and the fourth wall 16 are arranged along the second direction Y. The fourth wall 16 connects the second wall 12, the third wall 13, and the bottom wall 15 of the first housing, and the fourth wall 16 closes the opening 10a of the first housing. The first fan 40 is configured to drive the first refrigerant to flow between the first gap 101, the second gap 102, and the refrigerant passage 20a.

[0227] In some embodiments, referring to Figure 3 and Figure 25 , the liquid cooling unit 110 includes a refrigeration part (not shown in the figure), and the refrigeration part can lower the temperature of the flowable refrigerant, and dissipate heat from the battery module 20 through the flowable refrigerant. The first fan 40 is in a working state. The first fan 40 drives air to flow between the first gap 101, the second gap 102, and the refrigerant passage 20a, and the air takes away the heat of the battery module 20, reducing the temperature difference between different parts of the battery module 20. The first fan 40 drives air to flow through the cooling member 211, which can reduce the condensation formed on the surface of the cooling member 211.

[0228] Please refer to Figure 2 , Figure 3 and Figures 12 to 15 , in some embodiments, the energy storage device 100 includes a second housing 50, and the second housing 50 is disposed inside the first housing 10. The second housing 50 is connected to the first partition member 103, and the second housing 50 and the first partition member 103 are part of the components forming the first space 501. The battery module 20 is disposed in the first space 501, and the first space 501 is isolated from the space outside the first space 501, which can reduce the flow of the first refrigerant in the first space 501 to the outside and reduce the impact on heat dissipation.

[0229] In some embodiments, the second housing 50 includes a first side wall 51, a second side wall 52, and a top wall 54 of the second housing. The first side wall 51 and the second side wall 52 are arranged at intervals along the third direction Z, the top wall 54 of the second housing and the first partition member 103 are arranged at intervals along the first direction X, the top wall 54 of the second housing connects the first side wall 51 and the second side wall 52, and the first partition member 103 connects the first side wall 51 and the second side wall 52.

[0230] In some embodiments, the first partition member 103 is fixedly connected to the second wall 12 and the third wall 13, and the second partition member 105 is fixedly connected to the second wall 12 and the third wall 13. The first partition member 103, the second partition member 105, the second wall 12, and the third wall 13 form a first channel outlet 50c2.

[0231] In some embodiments, referring to Figures 2 to 7, the first partition 103 is fixedly connected to the first side wall 51 and the second side wall 52, and the second partition 105 is fixedly connected to the first side wall 51 and the second side wall 52. The first partition 103, the second partition 105, the first side wall 51 and the second side wall 52 form a first channel outlet 50c2.

[0232] Please refer to Figure 3 and Figure 6 , the first partition 103 includes a first horizontal portion 1031 and a first bending portion 1032, and the first bending portion 1032 extends away from the battery module 20. The second partition 105 includes a second horizontal portion 1051 and a second bending portion 1052, and the second bending portion 1052 extends away from the battery module 20. The first bending portion 1032 and the second bending portion 1052 guide the first refrigerant to flow away from the battery module 20, reduce the direct flow of the first refrigerant along the second direction Y to the heat exchanger 30, and reduce the flow of the first refrigerant along the first channel 50c toward the first channel inlet 50c1 after colliding with the heat exchanger 30.

[0233] Please refer to Figure 7 , the first partition 103 includes a first horizontal portion 1031 and a first bending portion 1032, and the first bending portion 1032 extends away from the battery module 20. The second partition 105 includes a second bending portion 1052, and the second bending portion 1052 extends away from the battery module 20. The first bending portion 1032 and the second bending portion 1052 guide the first refrigerant to flow away from the battery module 20, reduce the direct flow of the first refrigerant along the second direction Y to the heat exchanger 30, and reduce the flow of the first refrigerant along the first channel 50c toward the first channel inlet 50c1 after colliding with the heat exchanger 30.

[0234] Please refer to Figure 8 and Figure 9 , Figure 8 is Figure 3 a schematic diagram of an embodiment. Figure 9 is Figure 7 a schematic diagram of an embodiment, in which one cooling component 21 is disposed on one side of the battery module 20 close to the first partition 103, and the battery module 20 is the battery module 20 closest to the first partition 103. The first side wall 51, the second side wall 52, the cooling component 21 connected to the battery module 20, the first partition 103 and the second partition 105 form a first channel 50c. Optionally, the first side wall 51, the second side wall 52, the cooling component 21 connected to the battery module 20 and the first partition 103 form a first channel inlet 50c1.

[0235] Please refer to Figure 10 , Figure 10Schematic diagram of another embodiment. One of the cooling components 21 is disposed on a side of the battery module 20 close to the first partition member 103, and the battery module 20 is the battery module 20 closest to the first partition member 103. The first sidewall 51, the second sidewall 52, the first partition member 103, and the second partition member 105 form a first channel 50c, and the first sidewall 51, the second sidewall 52, the first partition member 103, and the second partition member 105 form a first channel inlet 50c1.

[0236] In some embodiments, the first partition member 103 is fixedly connected to the second wall 12 and the third wall 13, and the second partition member 105 is fixedly connected to the second wall 12 and the third wall 13. One of the cooling components 21 is disposed on a side of the battery module 20 close to the first partition member 103, and the battery module 20 is the battery module 20 closest to the first partition member 103. The cooling component 21, the second wall 12, the third wall 13, the first partition member 103, and the second partition member 105 connected to the battery module 20 form a first channel 50c. Optionally, the cooling component 21, the second wall 12, the third wall 13, and the first partition member 103 connected to the battery module 20 form a first channel inlet 50c1.

[0237] In some embodiments, the first partition member 103 is fixedly connected to the second wall 12 and the third wall 13, and the second partition member 105 is fixedly connected to the second wall 12 and the third wall 13. One of the cooling components 21 is disposed on a side of the battery module 20 close to the first partition member 103, and the battery module 20 is the battery module 20 closest to the first partition member 103. The second wall 12, the third wall 13, the first partition member 103, and the second partition member 105 form a first channel 50c. The second wall 12, the third wall 13, the first partition member 103, and the second partition member 105 form a first channel inlet 50c1.

[0238] In some embodiments, the first fan 40 is located in the first space 501, which is beneficial to improving the heat dissipation of the battery module 20.

[0239] Please refer to Figure 2 、 Figures 12 to 15 , in some embodiments, the energy storage device 100 includes a first opening 50a and a second opening 50b that are oppositely disposed along the second direction Y. The second housing 50 is connected to the first partition member 103 and forms the first opening 50a and the second opening 50b. The heat exchange member 30 closes at least a part of the second opening 50b, so that the first refrigerant in the first space 501 is isolated from the space outside the first space 501.

[0240] Please refer to Figures 12 to 15, in some embodiments, the energy storage device 100 includes a first connecting wall 120. The first connecting wall 120 closes the first opening 50a, and the heat exchange member 30 closes at least part of the second opening 50b, so that the first refrigerant in the first space 501 is isolated from the space outside the first space 501.

[0241] In some embodiments, the first wall 11 closes the first opening 50a, and the heat exchange member 30 closes at least part of the second opening 50b, so that the first refrigerant in the first space 501 is isolated from the space outside the first space 501.

[0242] In some embodiments, the heat exchange member 30 closes the entire second opening 50b, increasing the contact area between the heat exchange member 30 and the first refrigerant and enhancing the heat dissipation of the battery module 20.

[0243] In some embodiments, the first wall 11 and the first connecting wall 120 are arranged along the second direction Y. A first gap 101 is located between the first connecting wall 120 and the battery module 20.

[0244] Please refer to Figures 12 to 15 , in some embodiments, the first side wall 51, the second side wall 52, the first partition member 103 and the second housing top wall 54 form the first opening 50a and the second opening 50b.

[0245] Please refer to Figures 12 to 15 , in some embodiments, the first connecting wall 120 connects the first side wall 51, the second side wall 52, the first partition member 103 and the second housing top wall 54 and closes the first opening 50a.

[0246] In some embodiments, the heat exchange member 30 connects the first side wall 51, the second side wall 52, the first partition member 103 and the second housing top wall 54 and closes the second opening 50b.

[0247] In some embodiments, the first wall 11 connects the first side wall 51, the second side wall 52, the first partition member 103 and the second housing top wall 54 and closes the first opening 50a. The heat exchange member 30 connects the first side wall 51, the second side wall 52, the first partition member 103 and the second housing top wall 54 and closes the second opening 50b.

[0248] In some embodiments, the energy storage device 100 includes a pressure relief portion 100a provided on the first housing top wall 14. When the battery module 20 relieves pressure, it relieves pressure through the pressure relief portion 100a.

[0249] Please refer to Figures 1 to 3 and Figures 12 to 15, in some embodiments, the top wall 14 of the first housing is provided with a first top wall opening 141, and the first top wall opening 141 penetrates through the top wall 14 of the first housing along the first direction X. The pressure relief part 100a closes the first top wall opening 141.

[0250] In some embodiments, the top wall 54 of the second housing is provided with a second top wall opening 541, and the second top wall opening 541 penetrates through the top wall 54 of the second housing along the first direction X. A first convex portion 542 is provided at the edge of the second top wall opening 541. The pressure relief part 100a is connected to the first convex portion 542 and closes the second top wall opening 541, so that the first space 501 is in a closed state. The pressure relief part 100a can relieve pressure on the battery module 20 in the first space 501.

[0251] In some embodiments, the top wall 54 of the second housing is not provided with a second top wall opening 541 and other openings.

[0252] Please refer to Figure 15 , in some embodiments, the energy storage device 100 includes a shielding plate 130, and the shielding plate 130 is provided with a through hole 130a. The shielding plate 130 is connected to the first side wall 51, the second side wall 52, the first partition member 103, and the second partition member 105. The first fan 40 is fixedly connected to the shielding plate 130. The first fan 40 can discharge the first refrigerant from the first gap 101 to the first channel 50c through the through hole 130a. The shielding plate 130 can further block the air reflux in the first channel 50c, reduce the return air, and is beneficial to heat dissipation.

[0253] Please refer to Figure 2 and Figure 3 , in some embodiments, the first housing 10 includes a support plate 19, and a first accommodation chamber 10e is formed between the first partition member 103 and the support plate 19 along the first direction X. The first accommodation chamber 10e is isolated from the first space 501. The electrical module 104 is disposed in the first accommodation chamber 10e.

[0254] In some embodiments, the support plate 19 and the bottom wall 15 of the first housing are spaced apart along the first direction X and form a second accommodation chamber 10f, and the liquid cooling unit 110 is disposed in the second accommodation chamber 10f.

[0255] Please refer to Figure 16 , in some embodiments, the energy storage device 100 includes a first fin 140, and the first fin 140 is connected to the first partition member 103. It is beneficial to dissipate heat from the electrical module 104. Optionally, the first fin 140 includes heat dissipation fins.

[0256] Please refer to Figures 17 to 20, in some embodiments, the heat exchange member 30 includes a first heat exchange channel 30a and a second heat exchange channel 30b which are separately arranged. The first heat exchange channel 30a communicates with the refrigerant channel 20a, and the second heat exchange channel 30b is configured to provide a flow path for the second refrigerant. The temperature of the second refrigerant is lower than that of the first refrigerant, and the heat of the first refrigerant is exported through the second heat exchange channel 30b. Optionally, the second refrigerant includes a liquid coolant. Optionally, the second refrigerant includes air.

[0257] In some embodiments, the second heat exchange channel 30b communicates with the outside of the energy storage device 100. The second heat exchange channel 30b is configured to allow the air outside the energy storage device 100 to flow through the second heat exchange channel 30b. The second refrigerant includes the air outside the energy storage device 100. The outside air enters the second heat exchange channel 30b, and heat exchange can occur between the first refrigerant in the first heat exchange channel 30a and the air in the second heat exchange channel 30b.

[0258] In some embodiments, the second heat exchange channel 30b communicates with a cooling device outside the energy storage device 100. The second heat exchange channel 30b is configured to allow the cooling medium of the external cooling device to flow through the second heat exchange channel 30b.

[0259] In some embodiments, the first heat exchange channel 30a and the second heat exchange channel 30b are arranged at intervals along the second direction Y.

[0260] Please refer to Figure 3 , Figures 17 to 21 , in some embodiments, the heat exchange member 30 includes a fixing plate 31, and the fixing plate 31 is fixedly connected to the first housing 10. The fixing plate 31 is provided with an inlet 311 and an outlet 312. The second heat exchange channel 30b communicates the inlet 311 and the outlet 312.

[0261] In some embodiments, the heat exchange member 30 includes a heat exchange part 32, and the heat exchange part 32 and the fixing plate 31 are arranged along the second direction Y. The first heat exchange channel 30a and the second heat exchange channel 30b are arranged on opposite sides of the heat exchange part 32.

[0262] In some embodiments, the first heat exchange channel 30a and the second heat exchange channel 30b are continuously bent and formed by a sheet-like heat exchange part 32.

[0263] In some embodiments, when observed along the first direction X, the first heat exchange channel 30a is in the shape of a triangle, a quadrilateral or a bow.

[0264] In some embodiments, when observed along the first direction X, the second heat exchange channel 30b is in the shape of a triangle, a quadrilateral or a bow.

[0265] In some embodiments, the heat exchange part 32 includes heat dissipation fins.

[0266] Please refer to Figures 17 to 21 In some embodiments, the first heat exchange channel 30a extends along the first direction X. The first heat exchange channel 30a includes a first end 301 and a second end 302 arranged along the first direction X. The first end 301 is closed, and the second end 302 communicates with the first channel 50c.

[0267] In some embodiments, the first heat exchange channel 30a includes a first heat exchange opening 310 facing the battery module 20, and the first heat exchange opening 310 communicates with the second gap 102.

[0268] In some embodiments, along the second direction Y, the projection of the inlet 311 is separated from the projection of the heat exchange member 32. The air in the first channel 50c enters the first heat exchange channel 30a from the second end 302, and flows through the second gap 102 from the first heat exchange opening 310 to the refrigerant channel 20a, which can reduce the air flowing from the first end 301 to the inlet 311 and flowing from the outlet 312 to the external environment, facilitating heat dissipation.

[0269] Please refer to Figures 17 to 21 In some embodiments, the second heat exchange channel 30b extends along the first direction X. The second heat exchange channel 30b includes a third end 303 and a fourth end 304 arranged along the first direction X. The fourth end 304 is closed, and the third end 303 is configured to allow the second refrigerant to pass through.

[0270] In some embodiments, the second heat exchange channel 30b includes a second heat exchange opening 320 facing the fixing plate 31, and the first heat exchange opening 310 and the second heat exchange opening 320 are spaced apart along the second direction Y. The second heat exchange opening 320 is configured to allow the second refrigerant to pass through.

[0271] In some embodiments, along the second direction Y, the projection of the outlet 312 overlaps with the projection of the heat exchange member 32, and the second heat exchange opening 320 communicates with the outlet 312. The external air enters the second heat exchange channel 30b through the inlet 311 and the third end 303, and flows from the second heat exchange opening 320 to the outlet 312, which can reduce the external air flowing into the second housing 50 from the fourth end 304, facilitating heat dissipation.

[0272] In some embodiments, the heat exchange member 30 includes a frame 33, and the frame 33 is connected to the fixing plate 31. The frame 33 is disposed in the second housing 50. The heat exchange member 32 is disposed in the frame 33. Along the first direction X, the frame 33 is spaced apart from the heat exchange member 32 and forms a connection port 30c, and the first channel 50c communicates with the connection port 30c.

[0273] In some embodiments, along the second direction Y, a part of the projection of the second partition 105 is located within the projection of the connection port 30c, reducing the air flow to positions outside the first heat exchange channel 30a, facilitating heat dissipation.

[0274] In some embodiments, along the second direction Y, a part of the projection of the first partition 103 is located within the projection of the connection port 30c, further reducing the air flow to positions outside the first heat exchange channel 30a, which is beneficial to heat dissipation.

[0275] In some embodiments, along the second direction Y, the projection of the first channel outlet 50c2 is located within the projection of the connection port 30c, further reducing the air flow to positions outside the first heat exchange channel 30a, which is beneficial to heat dissipation.

[0276] In some embodiments, the heat exchange member 30 includes a first baffle 34, and the first baffle 34 connects two second frame plates 333. Along the first direction X, the first heat exchange channel 30a includes a first section 330, and along the second direction Y, the first section 330 is located between the first baffle 34 and the fixing plate 31. The first baffle 34 covers the first section 330.

[0277] In some embodiments, along the second direction Y, there is an overlap between the projection of the first section 330 and the projection of the first channel 50c, and the projection of the first section 330 is separated from the projection of the battery module 20. The first baffle 34 restricts the air flow out of the first section 330, which is beneficial to heat dissipation.

[0278] In some embodiments, the heat exchange member 30 includes a third fan 35, the third fan 35 is fixedly connected to the fixing plate 31, and the third fan 35 is configured to drive the second refrigerant to enter the second heat exchange channel 30b from the inlet 311 and discharge from the outlet 312.

[0279] In some embodiments, the third fan 35 and the heat exchange member 32 are arranged along the first direction X.

[0280] In some embodiments, the heat exchange member 30 includes a second baffle 36, and the second baffle 36 connects the first frame plate 332 and two second frame plates 333. Along the second direction Y, the third fan 35 is located between the second baffle 36 and the fixing plate 31, and the second baffle 36 can block the outside air from entering the first space 501, which is beneficial to heat dissipation.

[0281] In some embodiments, along the second direction Y, the projection of the second baffle 36 is separated from the projection of the refrigerant channel 20a, and the projection of the second baffle 36 is in contact with or partially overlaps the projection of the heat exchange member 32, which is beneficial to heat dissipation.

[0282] In some embodiments, the energy storage device 100 includes M battery modules 20 and M cooling components 21, and one cooling component 21 is connected to one battery module 20.

[0283] In some embodiments, such as Figure 3As shown, the energy storage device 100 includes four battery modules 20 and four cooling components 21. One cooling component 21 is connected to one side of a battery module 20 close to the first partition 103.

[0284] Please refer to Figures 24 to 32 , in some embodiments, the cooling component 21 includes a cooling part 211 and a covering part 212. The battery module 20 is connected to the cooling part 211, and the battery module 20 and the cooling part 211 are arranged along the first direction X.

[0285] In some embodiments, the cooling part 211 includes a first flow channel 21a, and the refrigerant channel 20a is located between the cooling part 211 and the covering part 212.

[0286] In some embodiments, other components form the refrigerant channel 20a, and at least part of the refrigerant channel 20a is located between the cooling part 211 and the covering part 212. The other components are at least partially located between the cooling part 211 and the covering part 212. For example, a pipe forms the refrigerant channel 20a, and the pipe is at least partially located between the cooling part 211 and the covering part 212.

[0287] In some embodiments, the battery module 20 is in contact connection with the cooling part 211.

[0288] In some embodiments, the battery module 20 is spaced from the cooling part 211. Optionally. The battery module 20 is connected to the cooling part 211 through a thermal conductive adhesive.

[0289] In some embodiments, along the first direction X, the covering part 212 is located between the cooling part 211 and the battery module 20. The battery module 20 is connected to the cooling part 211 through the covering part 212.

[0290] In some embodiments, the refrigerant channel 20a includes a first refrigerant channel opening 201 and a second refrigerant channel opening 202. The refrigerant channel 20a communicates with the first gap 101 and the second gap 102 through the first refrigerant channel opening 201 and the second refrigerant channel opening 202.

[0291] In some embodiments, the first refrigerant channel opening 201 is an air inlet, and the second refrigerant channel opening 202 is an air outlet.

[0292] In some embodiments, the second refrigerant channel opening 202 is an air inlet, and the first refrigerant channel opening 201 is an air outlet.

[0293] In some embodiments, the first refrigerant channel opening 201 and the second refrigerant channel opening 202 are oppositely arranged along the second direction Y.

[0294] Please refer to Figures 23 to 26, in some embodiments, the cooling member 211 includes a first cooling member 2111 and a second cooling member 2112. The first cooling member 2111 and the second cooling member 2112 are arranged along the first direction X. The first cooling member 2111 is connected to the second cooling member 2112 to form a second space 211a, and the first flow channel 21a is provided in the second space 211a.

[0295] In some embodiments, the cooling member 211 includes a flow channel inlet 2113 and a flow channel outlet 2114. Both ends of the first flow channel 21a communicate with the flow channel inlet 2113 and the flow channel outlet 2114. The flow channel inlet 2113, the first flow channel 21a, and the flow channel outlet 2114 are configured such that the first refrigerant flows into the first flow channel 21a from the flow channel inlet 2113 and flows out of the first flow channel 21a from the flow channel outlet 2114.

[0296] Please refer to Figures 23 to 26 , in some embodiments, the cooling assembly 21 includes a first bracket 220, and the first bracket 220 supports the battery module 20. The cooling member 211, the first bracket 220, and the covering member 212 are at least part of the components forming the refrigerant channel 20a. Optionally, the cooling member 211, the first bracket 220, and the covering member 212 form the refrigerant channel 20a. Optionally, the cooling member 211, the first bracket 220, the covering member 212, and other partial components form the refrigerant channel 20a.

[0297] In some embodiments, the first bracket 220 includes a first support member 221 and a second support member 222 that are arranged at intervals. The first support member 221 is fixed to the cooling member 211, and the second support member 222 is fixed to the cooling member 211. The fixing methods include but are not limited to welding, snap fixing, and screw fixing.

[0298] In some embodiments, the first support member 221 and the second support member 222 are arranged at intervals along the third direction Z.

[0299] In some embodiments, the first support member 221 is fixed to the covering member 212, and the second support member 222 is fixed to the covering member 212.

[0300] In some embodiments, the first support member 221, the second support member 222, the cooling member 211, and the covering member 212 are at least part of the components forming the refrigerant channel 20a. Optionally, the cooling member 211, the first support member 221, the second support member 222, and the covering member 212 form the refrigerant channel 20a. Optionally, the cooling member 211, the first support member 221, the second support member 222, the covering member 212, and other partial components form the refrigerant channel 20a.

[0301] In some embodiments, the first support member 221, the second support member 222, the cooling member 211, and the covering member 212 form a first opening 201 of the refrigerant channel. The first support member 221, the second support member 222, the cooling member 211, and the covering member 212 form a second opening 202 of the refrigerant channel.

[0302] Please refer to Figure 27 , in some embodiments, the cooling assembly 21 includes a third support member 223. Along the third direction Z, the third support member 223 is located between the first support member 221 and the second support member 222. The third support member 223 can strengthen the supporting force for the battery module 20 and the cooling member 211.

[0303] In some embodiments, along the second direction Y, at least one of the first support member 221, the second support member 222, and the third support member 223 is hollow and can be ventilated, which is beneficial to heat dissipation and can reduce the weight of the energy storage device 100.

[0304] Please refer to Figures 27 to 30 , in some embodiments, the cooling assembly 21 includes at least one second bracket 230. The second bracket 230, the first support member 221, and the second support member 222 form at least one third opening 230a. The covering member 212 covers the third opening 230a to reduce the situation where air flows out of the refrigerant channel 20a through the third opening 230a, resulting in a reduced heat dissipation effect. Optionally, the covering member 212 covers all of the third opening 230a. Optionally, the covering member 212 covers at least a part of the third opening 230a. In some embodiments, please refer to Figure 28 , the energy storage device 100 includes three second brackets 230. The second brackets 230, the first support member 221, and the second support member 222 form two third openings 230a.

[0305] In some embodiments, the cooling assembly 21 includes two second brackets 230. The second brackets 230, the first support member 221, and the second support member 222 form one third opening 230a.

[0306] In some embodiments, the cooling assembly 21 includes one second bracket 230. The second bracket 230, the first support member 221, and the second support member 222 form two third openings 230a.

[0307] In some embodiments, the cooling assembly 21 includes one second bracket 230. The second bracket 230, the first support member 221, and the second support member 222 form one third opening 230a.

[0308] In some embodiments, the second bracket 230 and the cover 212 are arranged along the first direction X. The cover 212 is fixedly connected to the second bracket 230, which is beneficial to improving the structural strength of the first bracket 220, the cooling member 211, and the cover 212.

[0309] In some embodiments, the cover 212 is provided as an integral structure. The cover 212 is connected to the second bracket 230, and the cover 212 covers two third openings 230a.

[0310] In some embodiments, there are two covers 212. One cover covers one of the third openings 230a, and the other cover 212 covers the other third opening 230a.

[0311] In some embodiments, at least a part of the cover 212 is located in the third opening 230a.

[0312] In some embodiments, along the first direction X, the projection of the third opening 230a is located within the projection of the cover 212, and the cover 212 covers the entire third opening 230a.

[0313] In some embodiments, along the third direction Z, there is a third gap (not shown in the figure) between the cover 212 and the first bracket 220. The third gap is less than 5 mm, which is beneficial to the assembly of the cover 212 and reduces the escape of air from the third gap.

[0314] In some embodiments, an adhesive is provided in the third gap. The adhesive adhesively connects the cover 212 and the first bracket 220, further reducing the escape of air from the third gap.

[0315] In some embodiments, along the second direction Y, there is a fourth gap (not shown in the figure) between the cover 212 and the second bracket 230. The fourth gap is less than 5 mm, which is beneficial to the assembly of the cover 212 and reduces the escape of air from the fourth gap.

[0316] In some embodiments, an adhesive is provided in the fourth gap. The adhesive adhesively connects the cover 212 and the second bracket 230, further reducing the escape of air from the fourth gap.

[0317] In some embodiments, along the first direction X, the second bracket 230 is connected to the side of the first bracket 220 away from the cooling member 211. The second bracket 230 can protect the first bracket 220. For example, during transportation or assembly, the second bracket 230 can contact external handling equipment, reducing the force on the first bracket 220, the battery module 20, and the cooling member 211.

[0318] In some embodiments, the cooling assembly 21 includes at least two second brackets 230. One of the second brackets 230, the first support member 221, the second support member 222, and the cooling member 211 form a first opening 201 of the refrigerant channel. The other second bracket 230, the first support member 221, the second support member 222, and the cooling member 211 form a second opening 202 of the refrigerant channel.

[0319] In some embodiments, the cooling assembly 21 includes two second brackets 230 arranged along the second direction Y. The two second brackets 230 are connected to the first bracket 220 to form a third opening 230a.

[0320] In some embodiments, the cooling assembly 21 includes three second brackets 230 arranged along the second direction Y. The three second brackets 230 are connected to the first bracket 220 to form two third openings 230a.

[0321] Please refer to Figure 29 and Figure 30 In some embodiments, along the first direction X, the covering member 212 does not extend beyond the second bracket 230. Along the first direction X, the second bracket 230 is the outermost, and the second bracket 230 can protect the covering member 212. During transportation or assembly, an external handling device can act on the second bracket 230 to support the weights of the battery module 20, the cooling member 211, and the first bracket 220 through the second bracket 230, reducing the forces on the first bracket 220, the battery module 20, and the cooling member 211, and reducing the risk of deformation of the cooling member 211 caused by the force.

[0322] In some embodiments, the covering member 212 abuts against the first bracket 220, reducing the gap between the covering member 212 and the first bracket 220 and improving heat dissipation.

[0323] In some embodiments, the covering member 212 abuts against the second bracket 230, reducing the gap between the covering member 212 and the second bracket 230 and improving heat dissipation.

[0324] In some embodiments, the covering member 212 abuts against the first bracket 220 and the covering member 212 abuts against the second bracket 230, reducing the gap between the covering member 212 and the first bracket 220 and reducing the gap between the covering member 212 and the second bracket 230, further improving heat dissipation.

[0325] In some embodiments, the thermal conductivity of the covering member 212 is less than 0.5 W / m·K, which can reduce the heat exchange between the air in the refrigerant channel 20a and the outside of the energy storage module.

[0326] Please refer to Figure 27 , Figure 29 and Figure 30, in some embodiments, the cooling assembly 21 includes fins 60. The fins 60 are located between the cooling member 211 and the covering member 212. The fins 60 divide the refrigerant channel 20a into a plurality of sub-channels. The fins 60 can increase the contact area between the air in the refrigerant channel 20a and the cooling member 211, and the heat of the air in the refrigerant channel 20a is transferred to the cooling member 211 through the fins 60, which is beneficial to heat dissipation.

[0327] In some embodiments, the fins 60 are in contact connection with the cooling member 211.

[0328] In some embodiments, the fins 60 are connected to the cooling member 211 by thermal conductive adhesive.

[0329] In some embodiments, along the first direction X, the second bracket 230 protrudes from the fins 60 to reduce the force on the fins 60.

[0330] In some embodiments, the covering member 212 includes at least one of foam, polyurethane, epoxy resin, aerogel, and foaming adhesive. The covering member 212 can enclose the refrigerant channel 20a and allow air to flow along the extending direction of the refrigerant channel 20a. When external humid air enters the refrigerant channel 20a and contacts the fins 60 or the cooling member 211, condensed water will be formed. The covering member 212 can reduce the contact between the external humid air and the fins 60 and absorb part of the condensed water.

[0331] Please refer to Figure 22 , Figure 31 and Figure 32 , in some embodiments, the energy storage device 100 includes a plurality of third brackets 70. The third brackets 70 are provided on the side of the cooling member 211 away from the first bracket 220. The battery module 20 is disposed between two third brackets 70. The battery module 20 is connected to the two third brackets 70. The two third brackets 70 can limit the movement of the battery module 20.

[0332] In some embodiments, please refer to Figure 22 , the battery module 20 includes a plurality of battery cell groups 20d arranged along the third direction Z. Each battery cell group 20d includes at least two battery cells 22 arranged along the second direction Y. The energy storage device 100 includes a plurality of first side covers 80. Along the second direction Y, each battery cell group 20d is disposed between two first side covers 80. Each battery cell group 20d is fixed to the two first side covers 80. The first side covers 80 are all fixed to the third brackets 70.

[0333] In some embodiments, the two third brackets 70 are fixed to the first cooling member 2111, and a plurality of battery cells 22 are disposed between the two third brackets 70. The third brackets 70 can limit the position of the battery module 20 along the second direction Y.

[0334] In some embodiments, the battery module 20 includes a plurality of battery cells 22, and the plurality of battery cells 22 are arranged along the second direction Y. The energy storage device 100 includes two first side covers 80, and the two first side covers 80 are arranged at intervals along the second direction Y. Along the second direction Y, the battery module 20 is disposed between the two first side covers 80. The battery module 20 and the two first side covers 80 are fixed. The two first side covers 80 are fixed to the third bracket 70.

[0335] In some embodiments, the third bracket 70 includes a top wall 71, and the top wall 71 faces away from the cooling member 211. The first side cover 80 is fixed to the top wall 71. When the battery cell 22 expands, the expansion force received by the first side cover 80 can be transmitted to the third bracket 70 through the top wall 71, reducing the expansion force received by the first side cover 80.

[0336] Please refer to Figure 22 , in some embodiments, both of the two third brackets 70 are provided with connecting recesses 70a, and the first side cover 80 is provided with a connecting protrusion 80a. The connecting protrusion 80a is disposed in the connecting recess 70a, so that the first side cover 80 is fixedly connected to the third bracket 70.

[0337] In some embodiments, along the first direction, the cooling member 211 is located between the battery module 20 and the covering member 212, which is beneficial to the cooling member 211 to balance the temperatures of the plurality of battery cells 22.

[0338] Please refer to Figure 22 , in some embodiments, the battery module 20 includes a housing 240, and the housing 240 and the cooling member 211 form a second accommodation space 240a, and the battery module 20 is disposed in the second accommodation space 240a.

[0339] In some embodiments, the energy storage device 100 of the present application may be, but is not limited to, an emergency power supply, a large battery module, etc.

[0340] Those of ordinary skill in the art of the present technology should recognize that the above embodiments are only used to illustrate the present application, rather than to limit the present application. As long as appropriate changes and variations made to the above embodiments fall within the scope of the spirit of the present application, they fall within the scope of the disclosure of the present application.

Claims

1. An energy storage device, characterized in that: include: a first shell; a first partition, the first partition being connected to the first shell, the first partition dividing the first shell into a first chamber and a second chamber arranged along a first direction; A battery module is located in one of the first chamber and the second chamber; An electrical module, the electrical module is located in the other one of the first chamber and the second chamber, and the electrical module is electrically connected to the battery module.

2. The energy storage device according to claim 1, characterized in that: The energy storage device includes a liquid cooling unit, and the liquid cooling unit includes a driving device; The driving device is located in the other one of the first chamber and the second chamber, and the battery module, the electrical module and the driving device are arranged along the first direction.

3. The energy storage device according to claim 2, characterized in that: The energy storage device includes a first fan, the first fan and the battery module are located in a first chamber, and the first fan is configured to drive a first refrigerant to flow in the first chamber; Alternatively, the first fan and the battery module are located in the second chamber, and the first fan is configured to drive the first refrigerant to flow in the second chamber.

4. The energy storage device according to claim 3, characterized in that: The energy storage device comprises a second shell, wherein the second shell is arranged in the first shell; The second shell and the first partition serve as partial components for forming a first space, the battery module is disposed in the first space, and the first space is isolated from the outside of the first space.

5. The energy storage device according to claim 4, characterized in that: The second shell includes a first opening and a second opening arranged opposite to each other along a second direction, the first opening and the second opening are formed by the second shell and the first partition, and the first direction is perpendicular to the second direction; The energy storage device includes a heat exchange element, and the heat exchange element closes at least a portion of the second opening; The first shell includes a first wall, and the first wall closes the first opening; or the energy storage device includes a first connecting wall, and the first connecting wall closes the first opening.

6. The energy storage device according to claim 5, characterized in that: The second shell includes a first side wall, a second side wall, and a second shell top wall; The second shell top wall and the first partition are arranged along the first direction, and the second shell top wall connects the first side wall and the second side wall; The first side wall, the second side wall, the second housing top wall and the first partition form the first opening and the second opening; The heat exchange element connects the first side wall, the second side wall, the second shell top wall and the first partition, and closes the second opening; The first connecting wall connects the first side wall, the second side wall, the second shell top wall and the first partition, and closes the first opening; Alternatively, the first wall connects the first side wall, the second side wall, the second shell top wall and the first partition, and closes the first opening.

7. The energy storage device according to any one of claims 3 to 6, characterized in that: It includes a first channel, wherein the first channel is located between the battery module and the first partition, and the first fan is located in the first channel.

8. The energy storage device according to claim 7, characterized in that: The energy storage device includes a second separator, the second separator and the first separator are spaced apart along the first direction, and the first separator and the second separator serve as partial components forming the first channel.

9. The energy storage device according to claim 7 or 8, characterized in that: The energy storage device includes at least one cooling assembly, the battery module and the cooling assembly are arranged along the first direction, and the cooling assembly includes a first flow channel; The liquid cooling unit includes a pipeline, part of which is located in the first chamber, part of which is located in the second chamber, and the pipeline connects the first flow channel and the driving device.

10. The energy storage device according to claim 9, characterized in that: The cooling assembly includes a refrigerant channel. There is a gap between the battery module and the first shell, and the gap connects the first channel and the refrigerant channel.

11. The energy storage device according to claim 10, characterized in that: The gap includes a first gap and a second gap, and along a second direction, the first gap and the second gap are located on both sides of the battery module, and the first direction is perpendicular to the second direction; The coolant passage connects the first gap and the second gap, and the first passage connects the first gap and the second gap.

12. The energy storage device according to claim 10 or 11, characterized in that: The coolant channel includes a first coolant channel opening and a second coolant channel opening. The second coolant channel opening and the first coolant channel opening are arranged along a second direction, and the first direction is perpendicular to the first direction.

13. The energy storage device according to claim 12, characterized in that: The cooling assembly includes a cooling member and a covering member, the battery module is connected to the cooling member, and the battery module and the cooling member are arranged along the first direction; The cooling member includes the first flow channel, and the cooling medium channel is located between the cooling member and the covering member.

14. The energy storage device according to claim 13, characterized in that: The cooling assembly includes a first bracket, the first bracket supports the battery module, and the cooling member, the first bracket and the covering member serve as at least a portion of components forming the cooling medium channel.

15. The energy storage device according to claim 14, characterized in that: The first bracket includes a first support member and a second support member that are spaced apart; The first supporting member is fixed to the cooling member, and the second supporting member is fixed to the cooling member.

16. The energy storage device according to claim 15, characterized in that: The cooling assembly includes at least one second bracket, wherein the second bracket, the first support member and the second support member form at least one third opening; The cover member covers the third opening.

17. The energy storage device according to claim 16, characterized in that: At least a portion of the cover is located at the third opening.

18. The energy storage device according to claim 16 or 17, characterized in that: Along the first direction, the second bracket is connected to a side surface of the first bracket away from the cooling element.

19. The energy storage device according to any one of claims 16 to 18, characterized in that: The cooling assembly includes at least two second brackets, wherein one of the second brackets, the first support member, the second support member and the cooling member forms the second opening of the refrigerant channel, and another of the second brackets, the first support member, the second support member and the cooling member forms the first opening of the refrigerant channel.

20. The energy storage device according to any one of claims 16 to 19, characterized in that: The covering member abuts against the first bracket, and / or the covering member abuts against the second bracket.

21. The energy storage device according to any one of claims 13 to 20, characterized in that: The cooling assembly includes fins, the fins are located between the cooling member and the covering member, and the fins divide the refrigerant channel into a plurality of sub-channels.

22. The energy storage device according to any one of claims 13 to 21, characterized in that: The thermal conductivity of the cover is less than 0.5 W / m·K.

23. The energy storage device according to any one of claims 13 to 22, characterized in that: The covering member includes at least one of foam, polyurethane, epoxy resin, aerogel, and foaming glue.

24. The energy storage device according to any one of claims 10 to 23, characterized in that: The energy storage device includes a heat exchange component, and the heat exchange component includes a first heat exchange channel and a second heat exchange channel that are separated and arranged. The first heat exchange channel is connected to the refrigerant channel, and the second heat exchange channel is configured to provide a flow path for the second refrigerant.

25. The energy storage device according to claim 24, characterized in that The second heat exchange channel is in communication with the outside of the energy storage device, and the second heat exchange channel is configured to allow air outside the energy storage device to flow in the second heat exchange channel; The second refrigerant includes air outside the energy storage device.

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