Heat dissipation device, power conversion module and energy storage power supply

Abstract

The utility model provides a heat dissipation device, a power conversion module and an energy storage power supply. The heat dissipation device and the power conversion module are both applied to the energy storage power supply. The heat dissipation device comprises a water insulation box and a heat conduction piece. The water insulation box is provided with a heat dissipation channel, a first heat dissipation opening and an assembly opening. The first heat dissipation opening is communicated with the heat dissipation channel. The first heat dissipation opening is configured to allow a cooling medium to enter and exit from the heat dissipation channel. And the assembly port is communicated with the heat dissipation channel. A part of structure of the heat conduction piece is arranged outside the heat dissipation channel and is configured to be in heat conduction contact with a heating device of the energy storage power supply. And the other part of the structure of the heat conduction piece is arranged in the heat dissipation channel through the assembly opening. The heat conduction piece and the water insulation box are in sealing fit at the assembly opening. According to the heat dissipation device, the power conversion module and the energy storage power supply provided by the invention, the waterproof effect in different use postures is improved while the heat dissipation effect is maintained.

Description

Technical Field

[0001] The present application relates to the field of energy storage equipment, and in particular to a heat dissipation device, a power conversion module and an energy storage power supply. Background Art

[0002] Power banks are usually equipped with power conversion modules to achieve AC inversion and DC conversion functions. Power conversion modules usually contain components that generate a lot of heat, such as inductors and transformers, so heat dissipation needs to be considered when designing the modules.

[0003] In the related art, there are two main ways to dissipate heat in power conversion modules. One is to use a fan to drive the outside air to flow through the module to achieve heat dissipation. The other is to isolate the entire module from the outside environment and place it on a cold plate to achieve heat dissipation. The former cannot achieve waterproofing, while the latter is more expensive to achieve. Utility Model Content

[0004] In view of this, the present application provides a heat dissipation device, a power conversion module and an energy storage power supply, which improve the waterproof effect under different usage postures while maintaining the heat dissipation effect.

[0005] One embodiment of the present application provides a heat dissipation device, which is applied to an energy storage power supply. The heat dissipation device includes a water-isolating box and a heat-conducting member. The water-isolating box is provided with a heat dissipation channel, a first heat dissipation port, and an assembly port. The first heat dissipation port is in communication with the heat dissipation channel. The first heat dissipation port is configured to allow cooling medium to enter and exit the heat dissipation channel. The assembly port is in communication with the heat dissipation channel. A portion of the heat-conducting member is disposed outside the heat dissipation channel and is configured to be in thermal contact with a heating element of the energy storage power supply. Another portion of the heat-conducting member is disposed in the heat dissipation channel through the assembly port. The heat-conducting member and the water-isolating box are sealed and matched at the assembly port.

[0006] In the above embodiment, the external cooling medium can enter the heat dissipation channel of the water-proof box through the first heat dissipation port, and exchange heat with the heat-conducting component to achieve heat dissipation of the heat-generating device. On the one hand, the existence of the water-proof box and the sealing cooperation of the heat-conducting component through the assembly port and the water-proof box can achieve waterproof protection of the heat-generating device. On the other hand, the heat-conducting component extends into the heat dissipation channel through the assembly port, which can expand the contact area between the heat-conducting component and the cooling medium, thereby improving the heat dissipation effect of the heat-conducting component, thereby achieving accurate and efficient heat dissipation of the heat-generating device in thermal contact with the heat-conducting component. In this way, it is achieved that the cost is saved without the need for waterproof heat dissipation treatment of the power conversion module as a whole, and waterproof protection of the power conversion module and better heat dissipation of its heat-generating device are achieved.

[0007] In some embodiments of the present application, the first heat dissipation port includes two sub-ports. One of the two sub-ports is configured to allow the cooling medium to enter the heat dissipation channel, and the other is configured to allow the cooling medium to leave the heat dissipation channel. The two sub-ports are respectively arranged at both ends of the heat dissipation channel. The assembly port is located between the two sub-ports.

[0008] In the above embodiment, the cooling medium flows from one sub-port to another sub-port in the heat dissipation channel. The assembly port is set so that the cooling medium flows through the assembly port in one direction when flowing in the heat dissipation channel, reducing the possibility of the heated heat-conducting medium flowing through the portion of the guide member located in the heat dissipation channel again, thereby improving the heat dissipation efficiency.

[0009] In some embodiments of the present application, the heat conducting member includes an assembly portion and a heat dissipation fin. The assembly portion is configured to be connected to and in thermal contact with the heating device. The assembly portion is sealed and matched with the water-isolating box at the assembly opening. The heat dissipation fin is connected to the assembly portion and is located in the heat dissipation channel.

[0010] In the above embodiment, the assembly portion transfers the heat of the heat generating device to the heat dissipation fins for dissipation, and the contact area between the heat conducting member and the cooling medium is increased through the heat dissipation fins, thereby improving the heat dissipation efficiency.

[0011] In some embodiments of the present application, the assembly portion is provided with an assembly cavity. The assembly cavity is configured to accommodate a partial structure of the heat-generating device. At least a portion of the assembly portion provided with the assembly cavity is located in the heat dissipation channel. The assembly cavity and the heat dissipation channel are isolated.

[0012] In the above embodiment, through the assembly cavity, part of the structure of the heating device can be located in the heat dissipation channel, so that the distance between the part of the structure of the heating device and the cooling medium is shortened, thereby shortening the transfer path of heat from the heating device to the cooling medium, and improving the heat dissipation efficiency of the heating device.

[0013] In some embodiments of the present application, the heat conducting member is a cured heat conductive adhesive. The cured heat conductive adhesive includes a first part and a second part. The first part and the second part are an integrally formed structure. The first part is configured to cover the surface of the heat generating device. The second part is located in the heat dissipation channel.

[0014] In the above embodiment, the cured thermally conductive adhesive can be cured into different shapes as needed and can still transfer heat smoothly. The first part covers the heating device, so that the cured thermally conductive adhesive is fixed to the heating device and absorbs the heat of the heating device. The heat absorbed by the first part is transferred to the second part, and the heat is dissipated through the second part located in the heat dissipation channel, thereby achieving heat dissipation of the heating device.

[0015] In some embodiments of the present application, the second part has a plurality of sheets spaced apart from each other.

[0016] In the above embodiment, the cured thermal conductive adhesive can be easily cured into different shapes. The shape of the second part located in the heat dissipation channel has a plurality of sheets spaced apart from each other, which is beneficial to increase the contact area between the second part and the cooling medium, thereby improving the heat dissipation efficiency.

[0017] In some embodiments of the present application, the waterproof box is a plastic box or a sheet metal box.

[0018] In the above embodiment, the waterproof box is constructed by plastic material, which can reduce the weight of the waterproof box and improve the sealing performance of the waterproof box. The waterproof box is constructed by sheet metal material, which can improve the structural strength of the waterproof box and improve the sealing performance of the waterproof box.

[0019] In some embodiments of the present application, the heat dissipation device further comprises a fixing member. The fixing member is connected to the water-proof box. The fixing member is also configured to fix the first circuit board of the power conversion module of the energy storage power supply. The heating device is arranged on the first circuit board.

[0020] In the above embodiment, by providing a fixing member, the first circuit board and the water-proof box are fixed to each other, thereby reducing the possibility of the heating device shaking relative to the water-proof box, thereby reducing the possibility of damaging the sealing structure at the assembly port, and improving the waterproof performance between the water-proof box and the heat-conducting component.

[0021] In some embodiments of the present application, the heat dissipation device further comprises a baffle. The baffle is an integrally formed structure with one of the water-blocking box and the fixing member, and is sealed with the other of the two. The baffle, the water-blocking box and the fixing member enclose a first accommodating cavity. The first accommodating cavity is configured to accommodate a first circuit board.

[0022] In the above embodiment, the enclosure forms a first accommodating cavity with good sealing performance between the water-proof box and the fixing member, thereby realizing waterproof protection of the first circuit board. The enclosure is integrally formed with the water-proof box or the fixing member, which can improve the sealing effect on the one hand and simplify the assembly steps on the other hand.

[0023] In some embodiments of the present application, there are multiple first circuit boards. Two fixing members are provided. Each fixing member is configured to fix at least one first circuit board. The two fixing members are respectively connected to opposite sides of the water-proof box. Multiple assembly ports are provided. Some of the assembly ports face one fixing member. Some of the assembly ports face another fixing member.

[0024] In the above embodiment, fixing parts are respectively arranged on both sides of the water-proof box to facilitate fixing of multiple first circuit boards, so that multiple heating devices are distributed on opposite sides of the water-proof box, thereby reducing the number of assembly openings opened on one side of the water-proof box to increase the distance between multiple assembly openings on one side of the water-proof box. On the one hand, it is convenient to seal the heat-conducting part and the water-proof box at the assembly opening, and on the other hand, it enhances the structural strength of the water-proof box, which is beneficial to improving the waterproof effect of the water-proof box.

[0025] In some embodiments of the present application, the heat dissipation device further includes a support column, which is connected to the two fixing members and supported between the two fixing members.

[0026] In the above embodiment, the two fixing parts are mutually supported and fixed by the support column, which reduces the shear force on the water-proof box caused by the connection between the fixing parts and the water-proof box, which is conducive to improving the structural strength of the water-proof box, thereby improving the waterproof effect of the water-proof box. And by providing the support column, the water-proof box and the two fixing parts are mutually fixed in pairs, and the mutual stability is improved, thereby reducing the possibility of the heating device shaking relative to the water-proof box, thereby reducing the possibility of damaging the sealing structure at the assembly port, and improving the waterproof performance between the water-proof box and the heat-conducting member.

[0027] In some embodiments of the present application, the side of the fixing member facing the water-proof box is configured to connect to the first circuit board, and the side of the fixing member facing away from the water-proof box is configured to seal the second circuit board of the battery module of the energy storage power supply.

[0028] In the above embodiment, the fixing member can seal the second circuit board of the battery module while fixing the first circuit board of the power conversion module, thereby simplifying the structure, reducing the space required for assembling the heat dissipation device and the power conversion module and the battery module, improving the space utilization inside the energy storage power supply, and facilitating reducing the overall volume of the energy storage power supply.

[0029] In some embodiments of the present application, the battery cell module further comprises a battery cell housing and a battery cell body. The fixing member is sealedly connected to the battery cell housing and encloses a battery cell accommodating cavity for accommodating the second circuit board and the battery cell body.

[0030] In the above embodiment, the second circuit board and the battery body are sealed by the fixing member, thereby providing waterproof protection. At the same time, the water-proof box is connected to the battery housing through the fixing member, thereby enhancing the stability of the heat dissipation device, the power conversion module and the battery module.

[0031] In some embodiments of the present application, the water-proof box forms a second accommodating chamber. The second accommodating chamber is configured to accommodate a first circuit board of a power conversion module of the energy storage power supply. The second accommodating chamber is communicated with the assembly port. The heat conducting member extends from the second accommodating chamber into the heat dissipation channel.

[0032] In the above embodiment, the water-proof box itself forms the second accommodation cavity, so that the first circuit board can be directly assembled to the water-proof box, simplifying the structure of fixing the first circuit board and the water-proof box to each other. In addition, the water-proof box can seal the second accommodation cavity by cooperating with the power supply housing of the energy storage power supply, thereby improving space utilization.

[0033] In some embodiments of the present application, the water-proof box forms a fan accommodating chamber. The fan accommodating chamber is communicated with the first heat dissipation port. The heat dissipation device further includes a fan. The fan is disposed in the fan accommodating chamber. The fan is configured to supply air toward the first heat dissipation port.

[0034] In the above embodiment, the fan is assembled through the fan accommodating cavity formed in the water-proof box, which is conducive to improving the stability of the fixing between the fan and the water-proof box, and is convenient for the fan to stably supply air. The fan supplies air to the first heat dissipation port, so that the airflow flows through the heat dissipation channel, and the gas is used as the cooling medium, which is easy to obtain and is convenient for realizing the heat dissipation of the heat conductive member.

[0035] An embodiment of the present application provides a power conversion module. The power conversion module is applied to an energy storage power supply. The power conversion module includes a heating device and a heat dissipation device as described in any of the above embodiments. The heating device is in thermal contact with a heat conducting member.

[0036] In the above embodiment, when the power conversion module is working, the heat generating device generates heat. The heat of the heat generating device is transferred to the heat conducting member outside the watertight box, and the heat is dissipated through the portion of the heat conducting member placed in the heat dissipation channel, thereby achieving heat dissipation. By sealing the heat conducting member and the watertight box at the assembly opening, the watertight box can provide a waterproof effect, reducing the possibility of the heat generating device or other structures of the power conversion module being invaded by liquid.

[0037] An embodiment of the present application provides an energy storage power supply. The energy storage power supply includes a power supply housing and a power conversion module as described in the above embodiment. The power conversion module is arranged in the power supply housing.

[0038] In the above embodiment, the power supply housing brings a certain degree of waterproof effect to the power change module, and further, the heat of the heating device is transferred to the heat dissipation channel through the heat conductive member, and the water-proof box separates the heat dissipation channel from the heating device, which is beneficial to improve the waterproof effect.

[0039] In some embodiments of the present application, the power supply housing is provided with a second heat dissipation port. The second heat dissipation port is communicated with the external environment of the energy storage power supply. The water-proof box is sealed with the power supply housing and forms a communication channel. The second heat dissipation port is communicated with the first heat dissipation port through the communication channel.

[0040] In the above embodiment, the heat of the cooling medium in the heat dissipation channel leaves the water-proof box through the first heat dissipation port and dissipates to the outside of the energy storage power supply through the second heat dissipation port, which is conducive to improving the heat dissipation effect. The connecting channel seals and connects the first heat dissipation port with the second heat dissipation port, reducing the possibility of liquid entering other positions in the energy storage power supply from the first heat dissipation port, the second heat dissipation port and the connecting channel, thereby improving the waterproof performance.

[0041] In some embodiments of the present application, a first sealing area, a second sealing area and a third sealing area are provided in the power supply housing. The first sealing area, the second sealing area and the third sealing area are sealed with each other. The first sealing area is connected to the second heat dissipation port. The power conversion module is accommodated in the first sealing area. The energy storage power supply also includes a battery cell module and a panel module. The battery cell module is accommodated in the second sealing area, and the panel module is accommodated in the third sealing area.

[0042] In the above embodiment, the power supply housing is partitioned and sealed to improve the waterproof performance of the power conversion module, the battery cell module and the panel module, reduce the possibility of liquid entering a certain area and flowing to other areas to damage other structures, and improve the overall waterproof safety of the energy storage power supply.

[0043] In some embodiments of the present application, the heat dissipation device is sealed to the power supply housing so that the second sealing area and the third sealing area are sealed to the first sealing area. The heat dissipation device and the power supply housing are sealed to the battery module so that the second sealing area and the third sealing area are sealed to each other.

[0044] In the above embodiment, the heat dissipation device is sealed to the power box body, thereby separating a first sealed area in the power housing, so as to form a waterproof isolation between the power conversion module and other structures. The battery cell module is sealed to the heat dissipation device and the power housing, so as to further separate a second sealed area and a third sealed area in the power housing outside the first sealed area, so as to form a waterproof isolation between the battery cell module and other structures, and between the panel module and other structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope.

[0046] Figure 1 is a three-dimensional schematic diagram of an energy storage power supply provided in one embodiment of the present application;

[0047] Figure 2 yes Figure 1 Explosion diagram of the medium energy storage power supply;

[0048] Figure 3 yes Figure 2 Exploded diagram of a medium power conversion module;

[0049] Figure 4 yes Figure 2 Schematic cross-sectional view of section AA;

[0050] Figure 5This is a three-dimensional schematic diagram of another form of energy storage power supply provided by an embodiment of the present application in a usage posture;

[0051] Figure 6 yes Figure 5 A three-dimensional schematic diagram of the medium energy storage power supply in another usage posture;

[0052] Figure 7 yes Figure 5 Explosion diagram of the medium energy storage power supply;

[0053] Figure 8 yes Figure 5 A schematic diagram of the structure of the power conversion module and the battery module when the middle water isolation box is separated from the battery module;

[0054] Fig. 9 yes Figure 8 An exploded schematic diagram of a power conversion module with some structures omitted;

[0055] Fig.10 yes Figure 5 Schematic diagram of the cross-section of the middle BB section;

[0056] Fig.11 yes Fig.10 Enlarged view of part C;

[0057] Fig.12 yes Fig.10 Magnified view of part D.

[0058] Main component symbols

[0059] 100- heat dissipation device 200- power conversion module 300- energy storage power supply

[0060] 10-waterproof box 20-heat conducting part 30-fixing part

[0061] 40-enclosure50-support column60-connecting column

[0062] 70-Fan

[0063] 101- heat dissipation channel 102- first heat dissipation port 103- assembly port

[0064] 104-first accommodating cavity 105-first sub-box 106-second sub-box

[0065] 107 - second accommodating chamber 108 - fan accommodating chamber 201 - assembly part

[0066] 202- heat sink fin 203- cured thermal adhesive 210- heating element

[0067] 220-first circuit board 310-power supply housing 320-battery module

[0068] 330-Panel module 340-Reinforcement rib

[0069] 1021- sub-port 2011- assembly cavity 2031- first part

[0070] 2032-second part 3101-first sealing area 3102-second sealing area

[0071] 3103- third sealing area 3104- second heat dissipation port 3105- communication channel

[0072] 3201- second circuit board 3202- battery cell housing 3203- battery cell accommodating cavity

[0073] 3204-Isolation Chamber DETAILED DESCRIPTION

[0074] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0076] In the description of the present application, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0077] Furthermore, the terms “first,” “second,” “third,” etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0078] Power banks are usually equipped with power conversion modules to achieve AC inversion and DC conversion functions. Power conversion modules usually contain components that generate a lot of heat, such as inductors and transformers, so heat dissipation needs to be considered when designing the modules.

[0079] In the related art, there are two main ways to dissipate heat in power conversion modules. One is to use a fan to drive the outside air to flow through the module to achieve heat dissipation. The other is to isolate the entire module from the outside environment and place it on a cold plate to achieve heat dissipation. The former cannot achieve waterproofing, while the latter is more expensive to achieve.

[0080] The embodiments of the present application provide a heat dissipation device, a power conversion module and an energy storage power supply. The heat dissipation device and the power conversion module are both applied to the energy storage power supply. The heat dissipation device includes a water-isolating box and a heat-conducting member. The water-isolating box is provided with a heat dissipation channel, a first heat dissipation port and an assembly port. The first heat dissipation port is communicated with the heat dissipation channel. The first heat dissipation port is configured to allow cooling medium to enter and exit the heat dissipation channel. The assembly port is communicated with the heat dissipation channel. A portion of the structure of the heat-conducting member is placed outside the heat dissipation channel and is configured to be in thermal contact with the heating element of the energy storage power supply. Another portion of the structure of the heat-conducting member is placed in the heat dissipation channel through the assembly port. The heat-conducting member and the water-isolating box are sealed and matched at the assembly port.

[0081] The external cooling medium can enter the heat dissipation channel of the water-proof box through the first heat dissipation port, and exchange heat with the heat-conducting component to achieve heat dissipation of the heat-generating device. On the one hand, the existence of the water-proof box and the sealing cooperation of the heat-conducting component through the assembly port and the water-proof box can achieve waterproof protection of the heat-generating device. On the other hand, the heat-conducting component extends into the heat dissipation channel through the assembly port, which can expand the contact area between the heat-conducting component and the cooling medium, thereby improving the heat dissipation effect of the heat-conducting component, thereby achieving accurate and efficient heat dissipation of the heat-generating device in thermal contact with the heat-conducting component. In this way, it is achieved that the cost is saved without the need for waterproof heat dissipation treatment of the power conversion module as a whole, and waterproof protection of the power conversion module and better heat dissipation of its heat-generating components are achieved.

[0082] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0083] See also Figure 1 and Figure 5 An embodiment of the present application provides a heat dissipation device 100 , a power conversion module 200 and an energy storage power supply 300 .

[0084] The energy storage power supply 300 has the functions of storing and discharging electricity, and is used for household power backup, production unit power backup, outdoor operations, outdoor entertainment, etc. The energy storage power supply 300 can specifically be a small portable mobile power supply, a household energy storage power supply, an industrial and commercial energy storage power supply, or a container-type energy storage power supply, etc. The power conversion module 200 can be assembled to the energy storage power supply 300 for use or assembled to other equipment for use. The energy storage power supply 300 realizes AC / DC conversion of the output current through the power conversion module. The heat dissipation device 100 can be assembled to the power conversion module 200 to dissipate the heat of the power conversion module 200, and can also be assembled to other modules of the energy storage power supply 300 to dissipate the heat of other modules of the energy storage power supply 300, or assembled to other equipment to dissipate the heat of other equipment.

[0085] See also Figure 2 and Figure 7In some embodiments, the energy storage power supply 300 includes a power supply housing 310, a power conversion module 200, a battery module 320 and a panel module 330. The power conversion module 200, the battery module 320 and the panel module 330 are all arranged in the power supply housing 310. The power supply housing 310 can bring a certain degree of waterproof effect. The power conversion module 200 is electrically connected to the battery module 320 to realize the AC / DC conversion control of the output current of the battery module 320. The panel module 330 is electrically connected to the power conversion module 200 and the battery module 320 to realize the program or function control of the power conversion module 200 and the battery module 320.

[0086] See also Fig.10 In some embodiments, the power supply housing 310 has a first sealed area 3101, a second sealed area 3102, and a third sealed area 3103. The first sealed area 3101, the second sealed area 3102, and the third sealed area 3103 are sealed with each other. The first sealed area 3101 is connected to the second heat dissipation port 3104. The power conversion module 200 is accommodated in the first sealed area 3101. The battery cell module 320 is accommodated in the second sealed area 3102, and the panel module 330 is accommodated in the third sealed area 3103.

[0087] Partitions are formed in the power supply housing 310 and sealed to each other, thereby improving the waterproof performance of the power conversion module 200, the battery cell module 320 and the panel module 330. This reduces the possibility of liquid entering a certain area and flowing to other areas to damage other structures, thereby improving the overall waterproof safety of the energy storage power supply 300.

[0088] See also Figure 5 and Figure 6 , the energy storage power supply 300 has multiple usage postures. Fig.10 As shown, the relative positions of the first sealing area 3101, the second sealing area 3102 and the third sealing area 3103 in the power supply housing 310 are fixed, and the use posture of the energy storage power supply 300 is changed, for example, the energy storage power supply is placed horizontally or vertically, and the first sealing area 3101, the second sealing area 3102 and the third sealing area 3103 still maintain mutual sealing and waterproofing, so that the energy storage power supply 300 has a waterproof effect in a variety of use postures.

[0089] See also Figure 2 , Figure 7 and Fig.10 In some embodiments, all components of the power conversion module 200 are located in the first sealed area 3101. The power conversion module 200 includes a heating device 210 (see Figure 4) and a first circuit board 220. The heating device 210 is mounted on the first circuit board 220. When the power conversion module 200 is working, the heating device 210 generates heat. In some embodiments, the heating device 210 includes but is not limited to capacitors, inductors, transformers and MOS tubes (full name MOSFET, i.e. Metal Oxide Semiconductor Field Effect Transistor, i.e. Metal Oxide Semiconductor Field Effect Transistor), etc. In some embodiments, the first circuit board 220 includes but is not limited to PSDR board (Power Supply Distribution, i.e. power board) and MPPT board (Maximum Power Point Tracking, maximum power tracker), etc.

[0090] In some embodiments, the number of heating devices 210 is multiple. The multiple heating devices 210 are used to perform different functions, such as capacitors, inductors, transformers and MOS tubes. The number of first circuit boards 220 is one or more. When the number of first circuit boards 220 is one, multiple heating devices 210 are provided on one first circuit board 220. When the number of first circuit boards 220 is multiple, one first circuit board 220 is provided with one heating device 210 or multiple heating devices 210 or no heating device 210. The multiple first circuit boards 220 are used to perform different functions, such as PSDR boards, MPPT boards, etc.

[0091] See also Figure 2 , Figure 7 and Fig.10 In some embodiments, all components of the battery cell module 320 are located in the second sealing area 3102. The battery cell module 320 includes a second circuit board 3201, a battery cell body (not shown) and a battery cell housing 3202. The second circuit board 3201 and the battery cell body are arranged in the battery cell housing 3202. In some embodiments, the second circuit board 3201 is a BMS (Battery Management System) board.

[0092] See also Fig.10 and Fig.11 In some embodiments, an isolation chamber 3204 is formed between the side of the battery cell housing 3202 where the power conversion module 200 and the panel module 330 are not provided and the power supply housing 310. The isolation chamber 3204 is configured to accommodate the adapter plate of the battery cell body. The battery cell housing 3202 is sealed and connected to the power supply housing 310 to make the isolation chamber 3204 sealed and waterproof.

[0093] See also Figure 5 , Figure 7 and Fig.10In some embodiments, there are multiple panel modules 330. There are multiple third sealed areas 3103. A panel module 330 is disposed in each third sealed area 3103. Different third sealed areas 3103 and first sealed areas 3101 are distributed on different sides of the second sealed area 3102, so different panel modules 330 and power conversion modules 200 are respectively located on different sides of the battery cell module 320.

[0094] See also Figure 5 and Figure 7 In some embodiments, part of the structure of the panel module 330 is exposed outside the power housing 310, and the panel module 330 is sealed and connected to the power housing 310, so that the third sealing area 3103 is sealed and waterproof.

[0095] See also Figure 2 and Figure 7 In some embodiments, the power conversion module 200 further includes a heat dissipation device 100 . The heat dissipation device 100 is used to dissipate heat from the heat generating device 210 .

[0096] See also Figure 2 , Figure 7 and Figures 10 to 12 In some embodiments, the heat dissipation device 100 is sealed to the power supply housing 310, so that the second sealing area 3102 and the third sealing area 3103 are sealed to the first sealing area 3101. The heat dissipation device 100 and the power supply housing 310 are sealed to the battery module 320, so that the second sealing area 3102 and the third sealing area 3103 are sealed to each other.

[0097] The heat sink 100 is sealed to the power housing 310, thereby separating a first sealed area 3101 in the power housing 310, so as to form a waterproof isolation between the power conversion module 200 and other structures. The battery cell module 320 is sealed to the heat sink 100 and the power housing 310, thereby further separating a second sealed area 3102 and a third sealed area 3103 in the power housing 310 outside the first sealed area 3101, so as to form a waterproof isolation between the battery cell module 320 and other structures, and between the panel module 330 and other structures.

[0098] It is understood that in some embodiments, the battery cell housing 3202 and the power supply housing 310 are bonded by sealant or provided with a rubber seal to form a sealing structure. Fig.11In some embodiments, reinforcing ribs 340 are provided between the battery cell housing 3202 and the power supply housing 310, and the reinforcing ribs 340 of the battery cell housing 3202 and the reinforcing ribs 340 of the power supply housing 310 abut against each other to form a sealing structure, or the reinforcing ribs 340 of the battery cell housing 3202 and the reinforcing ribs 340 of the power supply housing 310 are plugged into each other to form a sealing structure.

[0099] See also Figure 3 and Fig. 9 In some embodiments, the heat dissipation device 100 includes a water-proof box 10 and a heat-conducting member 20. The heat-conducting member 20 is in thermal contact with the heating device 210. The heat of the heating device 210 is transferred to the heat-conducting member 20 outside the water-proof box 10, and the heat-conducting member 20 transfers the heat of the heating device 210 to the inside of the water-proof box 10, and dissipates the heat to the power supply housing 310 through the water-proof box 10. Thus, the heat dissipation of the heating device 210 is achieved. At the same time, the water-proof box 10 can separate the external environment from the heating device 210, etc., so as to achieve waterproofing.

[0100] See also Figure 4 , Fig. 9 and Fig.10 In some embodiments, the water-blocking box 10 is provided with a heat dissipation channel 101 , a first heat dissipation port 102 and an assembly port 103 .

[0101] A cooling medium can flow through the heat dissipation channel 101. The water-proof box 10 can separate the heat dissipation channel 101 from other spaces in the energy storage power supply 300, thereby achieving a waterproof effect. As an exemplary example, the cooling medium includes but is not limited to air, water, coolant, etc.

[0102] The first heat dissipation opening 102 is connected to the heat dissipation channel 101. The first heat dissipation opening 102 is configured to allow cooling medium to enter and exit the heat dissipation channel 101. By providing the first heat dissipation opening 102, it is possible to allow a cooling medium with a higher temperature to leave the heat dissipation channel 101, and allow a cooling medium with a lower temperature to enter the heat dissipation channel 101, thereby improving the heat dissipation effect on the heat generating device 210.

[0103] The assembly port 103 is connected to the heat dissipation channel 101. A portion of the structure of the heat conductor 20 is placed outside the heat dissipation channel 101. The structure of the heat conductor 20 placed outside the heat dissipation channel 101 is configured to be in thermal contact with the heating device 210 of the energy storage power supply 300. Another portion of the structure of the heat conductor 20 is placed in the heat dissipation channel 101 through the assembly port 103. The heat conductor 20 and the water-proof box 10 are sealed and matched at the assembly port 103. By sealing the heat conductor 20 and the water-proof box 10 at the assembly port 103, the water-proof box 10 can provide a waterproof effect, reducing the possibility of the heating device 210 or other structures of the power conversion module 200 being invaded by liquids.

[0104] The external cooling medium can enter the heat dissipation channel 101 of the water-proof box 10 through the first heat dissipation port 102, and exchange heat with the heat-conducting member 20 to achieve heat dissipation of the heating device 210. On the one hand, the existence of the water-proof box 10 and the sealing cooperation of the heat-conducting member 20 with the water-proof box 10 through the assembly port 103 can achieve waterproof protection of the heating device 210. On the other hand, the heat-conducting member 20 extends into the heat dissipation channel 101 through the assembly port 103, which can expand the contact area between the heat-conducting member 20 and the cooling medium, thereby improving the heat dissipation effect of the heat-conducting member 20, thereby achieving accurate and efficient heat dissipation of the heating device 210 in thermal contact with the heat-conducting member 20. In this way, it is achieved that the cost of implementation is saved without the need for waterproof heat dissipation treatment of the power conversion module 200 as a whole, and waterproof protection of the power conversion module 200 and better heat dissipation of its heating device 210 are achieved.

[0105] In some embodiments, the watertight box 10 is a plastic box or a sheet metal box. By constructing the watertight box 10 with plastic material, the weight of the watertight box 10 can be reduced and the sealing performance of the watertight box 10 can be improved. By constructing the watertight box 10 with sheet metal material, the structural strength of the watertight box 10 can be improved and the sealing performance of the watertight box 10 can be improved.

[0106] In the related art, the energy storage power supply 300 dissipates heat from the heating device 210 through a complete metal box body. The box body is only provided with an opening connected to the external environment to allow air to enter the box body. The heating device 210 is attached to the outside of the box body to transfer heat to the box body and is taken away by the air, and the complete box body can achieve waterproofing. Although the related art can achieve heat dissipation and waterproofing at the same time, on the one hand, the heat conduction contact area between the heating device 210 and the box body is small, and the heat dissipation effect is poor. On the other hand, the box body is heavy as a whole, making the energy storage power supply 300 inconvenient to produce and transport.

[0107] However, in the present application, the water-proof box 10 can be made of plastic material, and the heat transfer can be achieved through the cooperation of the heat-conducting member 20 and the assembly port 103, so that the weight can be reduced while still dissipating heat. In addition, when the water-proof box 10 is made of sheet metal material, the water-proof box 10 is provided with an assembly port 103, thereby reducing the overall weight, and the heat is dissipated by partially extending the heat-conducting member 20 into the water-proof box 10, thereby improving the heat dissipation efficiency.

[0108] See also Figure 3 , Figure 4 , Figure 8 and Fig. 9In some embodiments, the first heat dissipation opening 102 includes two sub-openings 1021. One of the two sub-openings 1021 is configured to allow the cooling medium to enter the heat dissipation channel 101, and the other is configured to allow the cooling medium to leave the heat dissipation channel 101. The two sub-openings 1021 are respectively arranged at both ends of the heat dissipation channel 101. The assembly opening 103 is located between the two sub-openings 1021.

[0109] The cooling medium flows from one sub-port 1021 to another sub-port 1021 in the heat dissipation channel 101. The assembly port 103 is set so that the cooling medium flows through the assembly port 103 in one direction when flowing in the heat dissipation channel 101, reducing the possibility that the heated heat-conducting medium flows through the portion of the heat-conducting member 20 located in the heat dissipation channel 101 again, thereby improving the heat dissipation efficiency.

[0110] It is understood that in some embodiments, the heat dissipation channel 101 extends in a straight line, and in other embodiments, the heat dissipation channel 101 may extend in a curve, a fold line, or a U-shape.

[0111] See also Figure 3 , Figure 4 , Fig. 9 and Fig.10 In some embodiments, there are multiple heat generating devices 210 and multiple heat conducting members 20 . Each heat conducting member 20 is in thermal contact with one heat generating device 210 .

[0112] See also Figure 3 , Figure 4 and Fig. 9 In some embodiments, the heat conducting member 20 includes a mounting portion 201 and heat dissipation fins 202. The mounting portion 201 is configured to be connected to and in thermal contact with the heating device 210. The mounting portion 201 is sealed and matched with the water-blocking box 10 at the mounting opening 103. The heat dissipation fins 202 are connected to the mounting portion 201 and are located in the heat dissipation channel 101.

[0113] The assembly portion 201 transfers the heat of the heating device 210 to the heat dissipation fins 202 for dissipation, and the heat dissipation fins 202 increase the contact area between the heat conducting member 20 and the cooling medium, thereby improving the heat dissipation efficiency.

[0114] In some embodiments, a rubber seal or a sealant is provided between the assembly portion 201 and the water-isolating box 10 to achieve a sealed fit.

[0115] In some embodiments, the assembly portion 201 is made of metal material, such as aluminum alloy, to facilitate rapid heat transfer. In some embodiments, the heat dissipation fins 202 are made of metal material, such as aluminum alloy, to facilitate rapid heat transfer.

[0116] In some embodiments, the assembly portion 201 and the heat dissipation fins 202 are formed separately and then fixedly connected, or the assembly portion 201 and the heat dissipation fins 202 are an integrally formed structure.

[0117] See also Figure 3 and Figure 4 In some embodiments, the assembly portion 201 is provided with an assembly cavity 2011. The assembly cavity 2011 is configured to accommodate a portion of the structure of the heat generating device 210. At least a portion of the assembly portion 201 provided with the assembly cavity 2011 is located in the heat dissipation channel 101. The assembly cavity 2011 and the heat dissipation channel 101 are isolated.

[0118] By assembling the cavity 2011 , part of the structure of the heating device 210 can be located in the heat dissipation channel 101 , thereby shortening the distance between the part of the structure of the heating device 210 and the cooling medium, thereby shortening the transfer path of heat from the heating device 210 to the cooling medium and improving the heat dissipation efficiency of the heating device 210 .

[0119] It is understandable that in some embodiments, part of the assembly part 201 is located outside the heat dissipation channel 101, so as to facilitate the mutual fixation of the assembly part 201 and the water-blocking box 10. In the assembly part 201, the structure where the assembly cavity 2011 is located can be partially located inside the heat dissipation channel 101 and partially located outside the heat dissipation channel 101, so as to facilitate the assembly of the heating device 210, or it can be completely located inside the heat dissipation channel 101.

[0120] In some embodiments, when the assembly part 201 is connected to the heating device 210, the heating device 210 is partially placed in the assembly cavity 2011 and fixed by curing after filling with glue. For example, the connection between the assembly part 201 and a capacitor, inductor, transformer, etc. In some embodiments, when the assembly part 201 is connected to the heating device 210, the heating device 210 is attached to the assembly part 201 for fixing. For example, the connection between the assembly part 201 and a MOS tube.

[0121] See also Figure 3 , Figure 4 and Fig. 9 In some embodiments, the heat conducting member 20 is a cured heat conductive adhesive 203. The cured heat conductive adhesive 203 includes a first portion 2031 and a second portion 2032. The first portion 2031 and the second portion 2032 are an integrally formed structure. The first portion 2031 is configured to cover the surface of the heat generating device 210. The second portion 2032 is located in the heat dissipation channel 101.

[0122] The cured thermally conductive adhesive 203 can be cured into different shapes as needed and can still transfer heat smoothly. The first portion 2031 covers the heating device 210, so that the cured thermally conductive adhesive 203 is fixed to the heating device 210 and absorbs the heat of the heating device 210. The heat absorbed by the first portion 2031 is transferred to the second portion 2032, and the heat is dissipated through the second portion 2032 located in the heat dissipation channel 101, thereby achieving heat dissipation of the heating device 210.

[0123] In some embodiments, a rubber seal or sealant is provided between the first portion 2031 and the watertight box 10 to achieve a sealed fit. Alternatively, the first portion 2031 is elastically deformed to fit tightly with the watertight box 10 at the assembly opening 103 to achieve a sealed fit.

[0124] See also Figure 3 and Figure 4 In some embodiments, the second part 2032 has a plurality of sheets spaced apart from each other. The cured thermal conductive adhesive 203 is easy to be cured into different shapes. The shape of the second part 2032 located in the heat dissipation channel 101 has a plurality of sheets spaced apart from each other, shaped like a heat dissipation fin, which is conducive to increasing the contact area between the second part 2032 and the cooling medium, thereby improving the heat dissipation efficiency.

[0125] In some embodiments, the cured thermal adhesive 203 and the heating device 210 are assembled by placing the heating device 210 in a mold and pouring the thermal adhesive into the mold. The heating device 210 is taken out after the thermal adhesive is cured. The surface of the heating device 210 is covered with the first part 2031 of the cured thermal adhesive 203, and the shape of the second part 2032 of the cured thermal adhesive 203 can be directly formed into the shape of a heat sink fin.

[0126] See also Figure 3 , Figure 4 , Figure 8 and Fig. 9 In some embodiments, the heat dissipation device 100 further includes a fixing member 30. The fixing member 30 is connected to the water-blocking box 10. The fixing member 30 is also configured to fix the first circuit board 220 of the power conversion module 200. The heating device 210 is disposed on the first circuit board 220.

[0127] By providing the fixing member 30, the first circuit board 220 and the watertight box 10 are fixed to each other, thereby reducing the possibility of the heating device 210 shaking relative to the watertight box 10, reducing the possibility of damaging the sealing structure at the assembly port 103, and improving the waterproof performance between the watertight box 10 and the heat conducting member 20.

[0128] In some embodiments, the fixing member 30 is made of sheet metal, thereby improving the position stability of structures such as the water-blocking box 10 and the first circuit board 220 .

[0129] See also Figure 8 In some embodiments, the heat dissipation device 100 further includes a baffle 40. The baffle 40 is an integrally formed structure with one of the water-blocking box 10 and the fixing member 30, and is sealed with the other of the two. The baffle 40, the water-blocking box 10, and the fixing member 30 enclose a first accommodating cavity 104. The first accommodating cavity 104 is configured to accommodate the first circuit board 220.

[0130] The enclosure 40 forms a well-sealed first accommodating cavity 104 between the water-proof box 10 and the fixing member 30, thereby achieving waterproof protection for the first circuit board 220. The enclosure 40 is integrally formed with the water-proof box 10 or the fixing member 30, which can improve the sealing effect on the one hand and simplify the assembly steps on the other.

[0131] See also Figure 3 and Figure 8 In some embodiments, the number of the first circuit board 220 is multiple. Two fixing members 30 are provided. Each fixing member 30 is configured to fix at least one first circuit board 220. The two fixing members 30 are respectively connected to opposite sides of the water-proof box 10. There are multiple assembly openings 103. Some of the assembly openings 103 face one fixing member 30. Some of the assembly openings 103 face another fixing member 30.

[0132] Fixing members 30 are respectively provided on both sides of the water-proof box 10 to facilitate fixing of multiple first circuit boards 220, so that multiple heating devices 210 are distributed on opposite sides of the water-proof box 10, thereby reducing the number of assembly openings 103 opened on one side of the water-proof box 10 to increase the distance between the multiple assembly openings 103 on one side of the water-proof box 10. On the one hand, it is convenient to seal the heat-conducting member 20 and the water-proof box 10 at the assembly openings 103, and on the other hand, it enhances the structural strength of the water-proof box 10, which is beneficial to improving the waterproof effect of the water-proof box 10.

[0133] See also Figure 4 and Figure 8 In some embodiments, the watertight box 10 includes a first sub-box 105 and a second sub-box 106. The first sub-box 105 is connected to the second sub-box 106 and is surrounded to form a heat dissipation channel 101. The first heat dissipation port 102 is partially located in the first sub-box 105 and partially located in the second sub-box 106. An assembly port 103 is provided on a side of the first sub-box 105 away from the second sub-box 106. An assembly port 103 is provided on a side of the second sub-box 106 away from the first sub-box 105. A fixing member 30 is provided on a side of the first sub-box 105 away from the second sub-box 106, and another fixing member 30 is provided on a side of the second sub-box 106 away from the first sub-box 105.

[0134] The first sub-box 105 and the second sub-box 106 are detachably assembled to form the water-isolating box 10, which facilitates the sealed connection between the heat-conducting member 20 and the water-isolating box 10, and also facilitates the connection between the water-isolating box 10 and other structures of the energy storage power supply 300.

[0135] See also Figure 3 and Figure 4 In some embodiments, the heat dissipation device 100 further includes a support column 50 . The support column 50 is connected to the two fixing members 30 and supported between the two fixing members 30 .

[0136] The two fixing members 30 are mutually supported and fixed by the support column 50, which reduces the shear force on the water-proof box 10 caused by the connection between the fixing members 30 and the water-proof box 10, which is beneficial to improve the structural strength of the water-proof box 10, thereby improving the waterproof effect of the water-proof box 10. In addition, by providing the support column 50, the water-proof box 10 and the two fixing members 30 are mutually fixed in pairs, and the mutual stability is improved, thereby reducing the possibility of the heating device 210 shaking relative to the water-proof box 10, thereby reducing the possibility of damaging the sealing structure at the assembly port 103, and improving the waterproof performance between the water-proof box 10 and the heat-conducting member 20.

[0137] See also Figure 3 , Figure 4 and Figure 8 In some embodiments, the heat dissipation device 100 further includes a connecting column 60. The water-blocking box 10 is connected to a fixing member 30 via the connecting column 60. The fixing member 30 is fixedly connected to the power supply housing 310 via a supporting column 50 or other connecting structures. It is understood that in some embodiments, the connecting column 60 and the supporting column 50 are parallel to each other.

[0138] The water-proof box 10 is fixedly connected to the fixing member 30 via the connecting column 60, so that the water-proof box 10 is relatively fixed to the power supply housing 310. The water-proof box 10 is not directly connected to the power supply housing 310, which reduces the possibility of external pressure directly acting on the water-proof box 10 through the power supply housing 310, thereby reducing the possibility of deformation or damage of the water-proof box 10, which is conducive to improving the sealing performance of the water-proof box 10 and other structures.

[0139] See also Figure 8 and Fig.10 In some embodiments, the side of the fixing member 30 facing the water-proof box 10 is configured to connect to the first circuit board 220. The side of the fixing member 30 facing away from the water-proof box 10 is configured to seal the second circuit board 3201 of the battery module 320.

[0140] The fixing member 30 can not only fix the first circuit board 220 of the power conversion module 200, but also seal the second circuit board 3201 of the battery module 320, thereby simplifying the structure, reducing the space required for assembling the heat dissipation device 100, the power conversion module 200 and the battery module 320, improving the space utilization inside the energy storage power supply 300, and helping to reduce the overall volume of the energy storage power supply 300.

[0141] See also Fig.10 In some embodiments, the fixing member 30 is sealed and connected to the battery cell housing 3202 , and encloses and forms a battery cell accommodating cavity 3203 for accommodating the second circuit board 3201 and the battery cell body.

[0142] The second circuit board 3201 and the battery body are sealed by the fixing member 30 and the battery housing 3202 to form waterproof protection. At the same time, the water-proof box 10 is connected to the battery housing 3202 through the fixing member 30, which enhances the stability of the heat dissipation device 100, the power conversion module 200 and the battery module 320 being fixed to each other.

[0143] See also Figures 10 to 12 It can be understood that in some embodiments, the fixing member 30 is sealed to the battery housing 3202, and the fixing member 30 or the water-blocking box 10 is sealed to the power housing 310, so as to separate and form a first sealed area 3101 in the power housing 310. The battery housing 3202, the fixing member 30 and the power housing 310 are sealed to form a second sealed area 3102. The battery housing 3202, the fixing member 30, the enclosure 40 and the power housing 310 are sealed to form a third sealed area 3103.

[0144] See also Figures 8 to 10 In some embodiments, the water-proof box 10 forms a second accommodating chamber 107. The second accommodating chamber 107 is configured to accommodate the first circuit board 220 of the power conversion module 200. The second accommodating chamber 107 is communicated with the assembly port 103. The heat conducting member 20 extends from the second accommodating chamber 107 into the heat dissipation channel 101.

[0145] The water-proof box 10 itself forms the second accommodating cavity 107, so that the first circuit board 220 can be directly assembled to the water-proof box 10, simplifying the structure of fixing the first circuit board 220 and the water-proof box 10. In addition, the water-proof box 10 can seal the second accommodating cavity 107 by cooperating with the power supply housing 310, thereby improving space utilization.

[0146] In some embodiments, the power supply housing 310 is sealed and connected to one side of the watertight box 10 where the second accommodating chamber 107 is provided, thereby sealing the second accommodating chamber 107. In some embodiments, a fixing member 30 is provided on one side of the watertight box 10 where the second accommodating chamber 107 is provided, and is sealed and connected to the watertight box 10, thereby sealing the second accommodating chamber 107.

[0147] See also Figure 3 , Figure 4 and Fig. 9 In some embodiments, the water-proof box 10 forms a fan accommodating chamber 108. The fan accommodating chamber 108 is communicated with the first heat dissipation port 102. The heat dissipation device 100 further includes a fan 70. The fan 70 is disposed in the fan accommodating chamber 108. The fan 70 is configured to supply air or exhaust air toward the first heat dissipation port 102. It is understood that in some embodiments, a plurality of fans 70 may be mounted in one fan accommodating chamber 108.

[0148] The fan 70 is assembled in the fan accommodating cavity 108 formed in the water-proof box 10, which is conducive to improving the stability of the fixing between the fan 70 and the water-proof box 10, and facilitates the stable air supply of the fan 70. The fan 70 supplies or extracts air to the first heat dissipation port 102, so that the airflow flows through the heat dissipation channel 101, and the gas is used as the cooling medium, which is easy to obtain, and facilitates the heat dissipation of the heat conducting member 20.

[0149] See also Figure 3 , Figure 4 and Fig. 9 In some embodiments, a sub-port 1021 is respectively provided on two opposite sides of the water-proof box 10. The outer sides of the sub-ports 1021 on both sides are provided with a fan accommodating cavity 108, and both are equipped with a fan 70. The fan 70 on one side supplies air toward a corresponding sub-port 1021, and the fan 70 on the other side draws air from a corresponding sub-port 1021.

[0150] See also Figure 1 , Figure 5 and Fig.10 In some embodiments, the power supply housing 310 is provided with a second heat dissipation port 3104. The second heat dissipation port 3104 is connected to the external environment of the energy storage power supply 300. The water-proof box 10 is sealed with the power supply housing 310 and forms a communication channel 3105. The second heat dissipation port 3104 is connected to the first heat dissipation port 102 through the communication channel 3105. It can be understood that in some embodiments, the first heat dissipation port 102 is connected to the communication channel 3105 through the fan accommodating chamber 108.

[0151] The heat of the cooling medium in the heat dissipation channel 101 leaves the water-proof box 10 through the first heat dissipation port 102, and dissipates to the outside of the energy storage power supply 300 from the second heat dissipation port 3104, which is conducive to improving the heat dissipation effect. The connecting channel 3105 seals and connects the first heat dissipation port 102 with the second heat dissipation port 3104, reducing the possibility of liquid entering other positions in the energy storage power supply 300 from the first heat dissipation port 102, the second heat dissipation port 3104 and the connecting channel 3105, thereby improving the waterproof performance.

[0152] See also Figure 2 , Figure 7 and Fig.10In some embodiments, the power conversion module 200 is disposed on one side of the battery cell module 320, and the two panel modules 330 are respectively disposed on opposite sides of the battery cell module 320, and the distribution direction of the power conversion module 200 and the battery cell module 320 is perpendicular to the distribution direction of the two panel modules 330. The extension direction of the heat dissipation channel 101 is perpendicular to the distribution direction of the fixing member 30 and the water-proof box 10. The assembly port 103 is disposed toward the fixing member 30. The two sub-ports 1021 of the first heat dissipation port 102 are respectively disposed at opposite ends of the water-proof box 10, and the distribution direction of the two sub-ports 1021 is perpendicular to the distribution direction of the fixing member 30 and the water-proof box 10. The distribution direction of the two second heat dissipation ports 3104 is parallel to the distribution direction of the two sub-ports 1021.

[0153] It is understandable that in some embodiments, the distribution direction of the two sub-openings 1021 of the first heat dissipation opening 102 is parallel to the distribution direction of the two panel modules 330 , or the distribution direction of the two sub-openings 1021 is perpendicular to the distribution direction of the two panel modules 330 .

[0154] In the present application, being relatively perpendicular to each other does not mean being absolutely 90° apart, and being relatively parallel to each other does not mean being absolutely 180° apart. Rather, a certain deviation is allowed as long as it does not hinder the heat dissipation channel 101 from dissipating heat to the outside of the energy storage power supply 300.

[0155] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A heat dissipation device, applied to an energy storage power supply, characterized in that: The heat dissipation device comprises: A water-isolating box, provided with a heat dissipation channel, a first heat dissipation port and an assembly port, wherein the first heat dissipation port is communicated with the heat dissipation channel and is configured to allow cooling medium to enter and exit the heat dissipation channel, and the assembly port is communicated with the heat dissipation channel; A heat conductive member, a portion of the structure of the heat conductive member is placed outside the heat dissipation channel and is configured to be in thermal contact with the heating device of the energy storage power supply, another portion of the structure of the heat conductive member is placed in the heat dissipation channel through the assembly port, and the heat conductive member and the water-isolating box are sealed and matched at the assembly port.

2. The heat dissipation device according to claim 1, characterized in that: The first heat dissipation port includes two sub-ports, one of the two sub-ports is configured to allow the cooling medium to enter the heat dissipation channel, and the other is configured to allow the cooling medium to leave the heat dissipation channel. The two sub-ports are respectively arranged at both ends of the heat dissipation channel, and the assembly port is located between the two sub-ports.

3. The heat dissipation device according to claim 1, characterized in that: The heat conducting member includes an assembly portion and heat dissipation fins. The assembly portion is configured to be connected to the heating device and in thermal contact. The assembly portion is sealed with the water-blocking box at the assembly opening. The heat dissipation fins are connected to the assembly portion and are located in the heat dissipation channel.

4. The heat dissipation device according to claim 3, characterized in that: The assembly part is provided with an assembly cavity, and the assembly cavity is configured to accommodate a part of the structure of the heat-generating device. At least a part of the assembly part provided with the assembly cavity is located in the heat dissipation channel, and the assembly cavity and the heat dissipation channel are isolated.

5. The heat dissipation device according to claim 1, characterized in that: The heat conductive component is a cured thermally conductive adhesive, which includes a first part and a second part. The first part and the second part are an integrally formed structure. The first part is configured to cover the surface of the heat generating device, and the second part is located in the heat dissipation channel.

6. The heat dissipation device according to claim 5, characterized in that: The second part has a plurality of sheets which are spaced apart from each other.

7. The heat dissipation device according to claim 1, characterized in that: The water-proof box is a plastic box or a sheet metal box.

8. The heat dissipation device according to any one of claims 1 to 7, characterized in that: The heat dissipation device also includes a fixing member, which is connected to the water-blocking box. The fixing member is also configured to fix a first circuit board of a power conversion module of the energy storage power supply, and the heating device is arranged on the first circuit board.

9. The heat dissipation device according to claim 8, characterized in that: The heat dissipation device also includes an enclosure, which is an integrally formed structure with one of the water-blocking box and the fixing member, and is sealed with the other of the two. The enclosure, the water-blocking box and the fixing member together form a first accommodating cavity, and the first accommodating cavity is configured to accommodate the first circuit board.

10. The heat dissipation device according to claim 8, characterized in that: There are multiple first circuit boards, two fixing members are provided, each fixing member is configured to fix at least one first circuit board, the two fixing members are respectively connected to opposite sides of the water-proof box, and multiple assembly ports are provided, some of the assembly ports face one of the fixing members, and some of the assembly ports face another of the fixing members.

11. The heat dissipation device according to claim 10, characterized in that: The heat dissipation device further comprises a support column, which is connected to the two fixing members and supported between the two fixing members.

12. The heat dissipation device according to claim 11, characterized in that: The side of the fixing member facing the water-proof box is configured to be connected to the first circuit board, and the side of the fixing member facing away from the water-proof box is configured to seal the second circuit board of the battery cell module of the energy storage power supply.

13. The heat dissipation device according to claim 12, characterized in that: The battery cell module further includes a battery cell shell and a battery cell body. The fixing member is sealedly connected to the battery cell shell and encloses a battery cell accommodating cavity for accommodating the second circuit board and the battery cell body.

14. The heat dissipation device according to any one of claims 1 to 7, characterized in that: The water-proof box forms a second accommodating chamber, which is configured to accommodate a first circuit board of a power conversion module of the energy storage power supply. The second accommodating chamber is connected to the assembly port, and the heat conducting member extends from the second accommodating chamber into the heat dissipation channel.

15. The heat dissipation device according to any one of claims 1 to 7, characterized in that: The water-proof box forms a fan accommodating chamber, and the fan accommodating chamber is communicated with the first heat dissipation port. The heat dissipation device also includes a fan, and the fan is arranged in the fan accommodating chamber. The fan is configured to supply air toward the first heat dissipation port.

16. A power conversion module, applied to energy storage power supply, characterized in that: The power conversion module comprises a heating element and a heat dissipation device as claimed in any one of claims 1 to 15, wherein the heating element is in thermal contact with the heat conducting member.

17. An energy storage power supply, characterized in that: It comprises a power supply housing and a power conversion module as claimed in claim 16, wherein the power conversion module is arranged in the power supply housing.

18. The energy storage power supply according to claim 17, characterized in that: The power supply housing is provided with a second heat dissipation port, which is connected to the external environment of the energy storage power supply. The water-proof box is sealed with the power supply housing to form a connecting passage, and the second heat dissipation port is connected to the first heat dissipation port through the connecting passage.

19. The energy storage power supply according to claim 18, characterized in that: The power supply housing has a first sealing area, a second sealing area and a third sealing area. The first sealing area, the second sealing area and the third sealing area are sealed with each other. The first sealing area is connected to the second heat dissipation port. The power conversion module is accommodated in the first sealing area. The energy storage power supply also includes a battery cell module and a panel module. The battery cell module is accommodated in the second sealing area, and the panel module is accommodated in the third sealing area.

20. The energy storage power supply according to claim 19, characterized in that: The heat dissipation device is sealed and connected to the power supply shell so that the second sealing area and the third sealing area are sealed with the first sealing area. The heat dissipation device and the power supply shell are sealed and connected to the battery cell module so that the second sealing area and the third sealing area are sealed with each other.

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