Cold plate, battery pack, outdoor energy storage device and electric equipment

Abstract

The invention discloses a cold plate, a battery pack, an outdoor energy storage device and electric equipment. The cold plate comprises a plate body and a dehumidification assembly. The plate body is provided with a first flow channel, and the first flow channel is provided with a first inlet end and a first outlet end. The dehumidification assembly comprises a condensation piece and a fan arranged on the condensation piece, the condensation piece is arranged on the plate body and provided with a second flow channel, the second flow channel is provided with a second inlet end communicating with the first inlet end and a second outlet end communicating with the first outlet end, the fan comprises a fan blade part and a driving part, the fan blade part is located outside the condensation piece, and the driving part is located outside the condensation piece. The driving part is connected with the fan blade part, the driving part is observed from a visual angle perpendicular to the plate body, part of the driving part is located in the second flow channel, and the driving part is configured to be driven by the cooling liquid to rotate when the cooling liquid flows from the second inlet end to the second outlet end, so that the fan blade part is driven to rotate.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a cold plate, a battery pack, an outdoor energy storage device and electrical equipment. Background Art

[0002] In the field of battery energy storage, outdoor energy storage devices are usually placed in outdoor environments. Due to the large temperature difference between the internal and external environment of the energy storage device, condensation water is easily formed inside the energy storage device, which in turn causes short circuits in the internal electronic devices. In addition, the humidity of different height spaces inside the energy storage device is inconsistent, which is also prone to stratification. Summary of the invention

[0003] The embodiments of the present application provide a cold plate, a battery pack, an outdoor energy storage device, and an electrical device to solve the problem of inconsistent humidity in spaces at different heights inside the energy storage device existing in the related art.

[0004] The cold plate of the embodiment of the present application comprises:

[0005] A plate body having a first flow channel, wherein the first flow channel has a first inlet end and a first outlet end;

[0006] A dehumidification component includes a condensation element and a fan mounted on the condensation element, wherein the condensation element is arranged on the plate body and has a second flow channel, wherein the second flow channel has a second inlet end connected to the first inlet end and a second outlet end connected to the first outlet end, wherein the fan includes a blade portion and a driving portion, wherein the blade portion is located outside the condensation element, the driving portion is connected to the blade portion, and the driving portion is observed from a perspective perpendicular to the plate body, and a portion of the driving portion is located in the second flow channel, and the driving portion is configured to be driven by the coolant to rotate when the coolant flows from the second inlet end to the second outlet end, thereby driving the blade portion to rotate.

[0007] In an embodiment of the present application, the second flow channel of the condensing member is connected to the first flow channel of the plate body. When the coolant flows into the first flow channel of the plate body from the first inlet end, the coolant will also flow into the second flow channel of the condensing member. In other words, the coolant is divided into two tributaries, one of which flows into the first flow channel of the plate body, and the other flows into the second flow channel of the condensing member. When the coolant flows from the second inlet end of the second flow channel to the second outlet end, it can drive the driving part to rotate, so that the driving part drives the fan blade part to rotate, and the fan blade part can drive the air around the dehumidification component to flow after the rotation. After the coolant flows through the second flow channel, the temperature of the condensing member is reduced, so that the air flowing around the dehumidification component exchanges heat with the condensing member with a lower temperature. When the temperature of the surrounding air is lower than the dew point temperature, the gas condenses to form condensed water, achieving a dehumidification effect. On the one hand, the dehumidification component is arranged on the plate body, which can improve the space utilization of the battery pack; on the other hand, the flow of the coolant can drive the driving part to rotate, and then drive the fan blade part to rotate, without the need for additional power consumption, and has the advantages of energy saving and environmental protection.

[0008] According to some embodiments of the present application, the dehumidification assembly further includes a cover shell, which is arranged on one side of the plate body in the thickness direction and forms an air flow channel with the plate body; the condensing element and the fan are located in the air flow channel; the cover shell has an air inlet and an air outlet connected to the air flow channel;

[0009] The fan blade portion has an air inlet side and an air outlet side, wherein the air inlet side faces the condensation element, and the air outlet side faces the air outlet.

[0010] In the embodiment of the present application, the housing has an air inlet and an air outlet, the air outlet side of the fan blade portion faces the air outlet, and the air inlet side faces the condensation member. When the fan blade portion rotates, it can drive the air around the dehumidification component to flow and pass through the condensation member, so that the air can fully exchange heat with the condensation member, improve the heat exchange efficiency, and thus improve the dehumidification effect. In addition, the opening direction of the air outlet can limit the flow direction of the air to prevent the air from flowing disorderly.

[0011] According to some embodiments of the present application, a flow area of ​​the air inlet on the cover shell is larger than a flow area of ​​the air outlet on the cover shell.

[0012] In the embodiment of the present application, since the flow area of ​​the air inlet on the housing is larger than the flow area of ​​the air outlet on the housing, the air inlet on the housing can absorb the surrounding hot air into the housing to the maximum extent to achieve condensation, thereby improving the condensation efficiency.

[0013] According to some embodiments of the present application, the cover shell is a rectangular parallelepiped and has a top plate and side plates, the side plates are connected to the top plate, the air outlet is arranged on the top plate, and the air inlet is arranged on the side plates.

[0014] In the embodiment of the present application, the cover is designed as a rectangular parallelepiped, which does not occupy too much volume on the surface of one side of the plate body. The air outlet is arranged on the top plate of the cover, and the air inlet is arranged on the side plate of the cover. When the fan blade rotates, the air around the dehumidification component enters the air flow channel from the side of the cover, and after heat exchange with the condensation element in the air flow channel, it is discharged from the top surface of the cover. The airflow is discharged from the top surface of the cover, but not directly toward the battery module, and will not affect the battery module.

[0015] According to some embodiments of the present application, the side panel includes two first side panels and two second side panels, the two first side panels and the two second side panels are alternately connected end to end to form a ring structure, the length of the first side panel is greater than the length of the second side panel, and one of the two first side panels is provided with the air inlet;

[0016] The air inlet is in the shape of an elongated strip, the length of the air inlet is L1, the width is W1, the length of the first side panel is L2, the width is W2; wherein, 4 / 5≤L1 / L2≤9 / 10, 1 / 2≤W1 / W2≤4 / 5.

[0017] In the embodiment of the present application, since the length and width of the air inlet and the length and width of the first side panel satisfy: 4 / 5≤L1 / L2≤9 / 10, 1 / 2≤W1 / W2≤4 / 5, the opening area of ​​the air inlet is larger, which increases the flow area of ​​the air inlet to absorb as much surrounding air as possible, thereby improving the condensation efficiency.

[0018] According to some embodiments of the present application, the air inlet is recessed from a side edge of the side plate away from the top plate toward a direction close to the top plate.

[0019] In the embodiment of the present application, the air inlet is formed on the side edge of the side plate away from the top plate, so that when the fan rotates, the air can enter the cover from the bottom of the cover, and then flow out from the air outlet arranged on the top plate. This prolongs the time for the air to flow in the cover, and then the air can fully contact the condensation element to achieve heat exchange, thereby improving the heat exchange efficiency.

[0020] According to some embodiments of the present application, a concave-convex structure is provided on a surface of the condensation element on one side facing the air inlet.

[0021] In the embodiment of the present application, a concave-convex structure is provided on one side surface of the condensation element facing the air inlet, and the concave-convex structure can increase the heat exchange area between the condensation element and the air, thereby improving the heat exchange efficiency.

[0022] According to some embodiments of the present application, the orthographic projection of the concave-convex structure on a target plane is a first projection, the orthographic projection of the air inlet on the target plane is a second projection, the first projection and the second projection have an overlapping third projection, and the ratio of the area of ​​the third projection to the area of ​​the second projection is R, R≥90%; wherein the target plane is perpendicular to the plate body.

[0023] In the embodiment of the present application, since the ratio of the area of ​​the third projection to the area of ​​the second projection is R ≥ 90%, the concave-convex structure almost covers all the air inlets. In this way, when hot air enters the cover from the air inlet, the concave-convex structure can condense the hot air to the maximum extent, thereby improving the condensation efficiency.

[0024] According to some embodiments of the present application, the area of ​​the first projection is greater than the area of ​​the third projection.

[0025] In the embodiment of the present application, the area of ​​the first projection is larger than the area of ​​the third projection. In the embodiment of the present application, since the area of ​​the first projection is larger than the area of ​​the third projection, the condensing element can condense the air coming in from the air inlet at the fastest speed, further improving the condensation efficiency.

[0026] According to some embodiments of the present application, the concave-convex structure includes a plurality of fins, and an extension direction of the fins is perpendicular to the plate body; the plurality of fins are spaced apart along an arrangement direction of the first inlet end and the first outlet end.

[0027] In the embodiment of the present application, a plurality of fins are arranged at intervals along the arrangement direction of the first inlet end and the first outlet end, and a gap is formed between two adjacent fins, and the gap extends in a direction perpendicular to the plate body. Since the opening direction of the air outlet is facing away from the plate body, when the air enters the air flow channel from the air inlet, it can contact the plurality of fins and quickly flow along the gap in a direction away from the plate body, and finally be discharged from the air outlet. In this way, the extension direction of the gap between two adjacent fins can increase the flow speed of the airflow and improve the heat exchange efficiency.

[0028] According to some embodiments of the present application, the plate body includes a substrate, a first joint and a second joint, the substrate has the first flow channel, the first joint is installed on the substrate and communicates with the first inlet end, and the second joint is installed on the substrate and communicates with the first outlet end;

[0029] The dehumidification assembly is located between the first joint and the second joint.

[0030] In the embodiment of the present application, the dehumidification component is located in the space between the first joint and the second joint without occupying other space of the base plate, thereby further improving the space utilization of the cold plate.

[0031] According to some embodiments of the present application, the substrate further has two third flow channels, which are respectively connected to the first inlet end and the first outlet end; the second inlet end and the second outlet end are respectively connected to the first inlet end and the first outlet end through the two third flow channels;

[0032] In the arrangement direction of the first joint and the second joint, the two third flow channels extend towards each other.

[0033] According to some embodiments of the present application, a flow area of ​​the third flow channel is smaller than a flow area of ​​the first flow channel.

[0034] In the embodiment of the present application, since the flow area of ​​the third flow channel is smaller than the flow area of ​​the first flow channel, the flow rate of the coolant in the third flow channel is smaller than the flow rate of the coolant in the first flow channel. This avoids affecting the cooling effect of the board body on the battery module due to excessive coolant diverted by the third flow channel.

[0035] According to some embodiments of the present application, the driving unit includes:

[0036] a rotating disk, located in the second flow channel;

[0037] A rotating shaft, one axial end of the rotating shaft is connected to the rotating disk, and the other axial end of the rotating shaft is connected to the fan blade portion; and

[0038] A plurality of driving plates are connected to a surface of the rotating disk facing away from the rotating shaft and are arranged at intervals along the circumference of the rotating disk.

[0039] According to some embodiments of the present application, the cross-sectional shape obtained by cutting the driving sheet along a section plane is a fan-shaped cross-sectional shape, and a plurality of vertices of the fan-shaped cross-sectional shape converge on the axis of the rotating shaft;

[0040] Wherein, the section plane is perpendicular to the axial direction of the rotating shaft.

[0041] The battery pack of the embodiment of the present application includes:

[0042] A cold plate as described in any of the above; and

[0043] The battery module is arranged on one side surface of the cold plate in the thickness direction.

[0044] According to some embodiments of the present application, the plate body of the cold plate has a first area and a second area that are adjacent to each other, the battery module is disposed in the first area, and the dehumidification assembly is disposed in the second area.

[0045] In the embodiment of the present application, the battery module is arranged in the first area of ​​the board body, and the dehumidification component is arranged in the second area of ​​the board body. The position of the dehumidification component is staggered with the position of the battery module, thereby improving the space utilization of the board body.

[0046] The outdoor energy storage device of the embodiment of the present application includes a plurality of battery packs as described above, and the plurality of battery packs are arranged in an array.

[0047] In the embodiment of the present application, since each battery pack is provided with a cold plate and the cold plate has a dehumidification component, a dehumidification effect can be achieved around each battery pack, ensuring that the humidity at each location in the outdoor energy storage device remains consistent, avoiding stratification due to inconsistent humidity.

[0048] The electric device of the embodiment of the present application includes any of the above-mentioned battery packs, and the battery pack supplies power to the electric device. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0050] Figure 1 is a schematic structural diagram of a household energy storage system according to an exemplary embodiment.

[0051] Figure 2 Shown is a three-dimensional schematic diagram of the cold plate and the battery module after assembly according to an embodiment of the present application.

[0052] Figure 3 Shown is a schematic diagram of an exploded view of a cold plate according to an embodiment of the present application.

[0053] Figure 4 Shown is a three-dimensional schematic diagram of a dehumidification component according to an embodiment of the present application.

[0054] Figure 5 Shown is the Figure 4 The cross-sectional view is obtained by the AA cutting line.

[0055] Figure 6 Shown is a schematic diagram of the decomposition of the dehumidification component of an embodiment of the present application from one viewing angle.

[0056] Figure 7 Shown is a schematic diagram of the decomposition of the dehumidification component of an embodiment of the present application from another perspective.

[0057] Figure 8 Shown is the Figure 4 The cross-sectional view obtained by the BB cutting line.

[0058] Fig. 9 Shown is a three-dimensional schematic diagram of the fan of an embodiment of the present application at a viewing angle.

[0059] Fig.10 Shown is a three-dimensional schematic diagram of the fan of the embodiment of the present application from another viewing angle.

[0060] Fig.11 What is shown is a schematic diagram of the positional relationship among the first projection, the second projection and the third projection.

[0061] Fig.12 Shown is a three-dimensional schematic diagram of an outdoor energy storage device according to an embodiment of the present application.

[0062] Fig.13 Shown is a schematic diagram of an electrical device according to an embodiment of the present application.

[0063] The reference numerals are described as follows:

[0064] 1. Energy storage device; 1a. Battery pack; 1b. Outdoor energy storage device; 2. Electric energy conversion device; 3. User load; 4. Electrical equipment;

[0065] 10. Cold plate; 20. Battery module; 21. Single battery; 30. Cabinet;

[0066] 100, plate body; 110, substrate; 110a, first region; 110b, second region; 111, first flow channel; 1111, first inlet end; 1112, first outlet end; 112, third flow channel; 113, heat conduction plate; 114, flow channel plate; 120, first joint; 130, second joint;

[0067] 200, dehumidification component;

[0068] 210, condensing element; 210a, concave-convex structure; 211, second flow channel; 2111, second inlet end; 2112, second outlet end; 212, fin; 213, mounting hole; 214, groove;

[0069] 220, fan; 221, fan blade; 222, driving unit; 2221, turntable; 2222, rotating shaft; 2223, driving sheet; 223, sealed bearing;

[0070] 230, cover; 231, air inlet; 232, air outlet; 233, air flow channel; 234, top plate; 235, side plate. DETAILED DESCRIPTION

[0071] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0072] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0073] Since the energy people need is highly temporal and spatial, in order to rationally utilize energy and improve energy utilization, it is necessary to use a medium or device to store one form of energy in the same way or convert it into another form of energy, and then release it in a specific form of energy based on future application needs.

[0074] At present, energy storage (i.e. energy storage) has a wide range of application scenarios, including power generation side energy storage, grid side energy storage, renewable energy grid-connected energy storage and user side energy storage. The corresponding types of energy storage devices include:

[0075] (1) Large energy storage containers used in grid-side energy storage scenarios can serve as high-quality active and reactive power regulation power sources in the grid, achieve load matching of electric energy in time and space, enhance the ability to absorb renewable energy, and are of great significance in grid system backup, relieving peak load power supply pressure, and peak and frequency regulation;

[0076] (2) The main operating mode of small and medium-sized energy storage cabinets used in industrial and commercial energy storage scenarios (banks, shopping malls, etc.) on the user side and small household energy storage boxes used in home energy storage scenarios on the user side is "peak shaving and valley filling". Since there is a large price difference in electricity charges at peak and valley locations according to electricity demand, after users have energy storage equipment, in order to reduce costs, they usually charge the energy storage cabinets / boxes during the low electricity price period; during the peak electricity price period, the electricity in the energy storage equipment is discharged for use to achieve the purpose of saving electricity bills. In addition, in remote areas and areas prone to natural disasters such as earthquakes and hurricanes, the existence of household energy storage devices is equivalent to users providing themselves and the power grid with backup power, eliminating the inconvenience caused by frequent power outages due to disasters or other reasons.

[0077] Take the household energy storage scenario in user-side energy storage as an example to illustrate. Figure 1A household energy storage system is shown, which includes an energy storage device 1 and an electric energy conversion device 2 (such as a photovoltaic panel), and a user load 3 (such as a street lamp, household appliances, etc.). The energy storage device 1 is a small energy storage box that can be mounted on an outdoor wall by wall hanging. Specifically, the electric energy conversion device 2 can convert solar energy into electric energy during the period of low electricity prices, and store it through the energy storage device 1, and then supply the user load 3 for use during the peak electricity price, or supply the user load 3 for use when the power grid is out of power / power outage.

[0078] In combination with the above-mentioned situation of storing energy by physical or electrochemical means, taking electrochemical energy storage as an example, the energy storage device 1 includes at least one group of chemical batteries, using the chemical elements in the chemical batteries as energy storage media, so as to realize the charging and discharging process through the chemical reaction or change of the energy storage medium. In simple terms, the electric energy generated by light energy and wind energy is stored in at least one group of chemical batteries through the chemical reaction or change of the energy storage medium, and when the use of external electric energy reaches a peak, the electric energy stored in at least one group of chemical batteries is released for use through the chemical reaction or change of the energy storage medium, or transferred to a place where electric energy is scarce for use.

[0079] like Figure 1 As shown, the energy storage device 1 is a battery pack 1a, and the battery pack 1a includes a battery module 20 and a cold plate 10, and the battery module 20 is arranged on one side surface of the cold plate 10 in the thickness direction. Among them, the battery module 20 includes a plurality of single cells 21 arranged side by side. The shape of the single cell 21 can be a rectangular parallelepiped, a cylinder or a flat body. Next, the single cell 21 is taken as an example of a rectangular parallelepiped for explanation.

[0080] like Figure 1 As shown, in the embodiment of the present application, the battery pack 1a includes two battery modules 20, both of which are arranged on one side of the thickness direction of the cold plate 10, and the two battery modules 20 are arranged side by side along the length direction of the single battery 21. The multiple single batteries 21 of each battery module 20 are arranged side by side along the width direction of the single battery 21.

[0081] The single battery 21 may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, or the like.

[0082] like Figure 2As shown, the cold plate 10 includes a plate body 100 and a dehumidification assembly 200. The plate body 100 is used to cool the battery module 20. The dehumidification assembly 200 can reduce the temperature of the surrounding gas. When the temperature around the dehumidification assembly 200 is lower than the dew point temperature, the water vapor in the surrounding gas begins to condense into liquid water, and then the dehumidification assembly 200 achieves the effect of reducing the water vapor content in the surrounding gas, achieving the effect of condensation dehumidification.

[0083] The plate body 100 has a first area 110a and a second area 110b that are adjacent to each other, the battery module 20 is disposed in the first area 110a, and the dehumidification assembly 200 is disposed in the second area 110b.

[0084] In the embodiment of the present application, the battery module 20 is arranged in the first area 110a of the board body 100, and the dehumidification component 200 is arranged in the second area 110b of the board body 100. The position of the dehumidification component 200 is staggered with the position of the battery module 20, thereby improving the space utilization of the board body 100.

[0085] like Figure 2 and Figure 3 As shown, the plate body 100 includes a substrate 110, a first joint 120 and a second joint 130. The substrate 110 has a first area 110a and a second area 110b. The substrate 110 has a first flow channel 111, and the first flow channel 111 has a first inlet end 1111 and a first outlet end 1112. The first joint 120 is installed in the second area 110b of the substrate 110 and communicates with the first inlet end 1111, and the second joint 130 is installed in the second area 110b of the substrate 110 and communicates with the first outlet end 1112. The dehumidification component 200 is located between the first joint 120 and the second joint 130. Among them, the first joint 120 is used to communicate with the outlet of the liquid cooling unit (not shown in the figure), and the second joint 130 is used to communicate with the inlet of the liquid cooling unit. The coolant provided by the liquid cooling unit flows into the first flow channel 111 through the first joint 120, and flows back to the liquid cooling unit through the second joint 130.

[0086] In the embodiment of the present application, the dehumidification assembly 200 is located between the first joint 120 and the second joint 130 , and does not occupy other space of the base plate 110 , thereby further improving the space utilization of the cold plate 10 .

[0087] like Figure 3As shown, in one embodiment, the substrate 110 may include a heat conducting plate 113 and a flow channel plate 114, the flow channel plate 114 may be formed into a first flow channel 111 by a stamping process, and the heat conducting plate 113 and the flow channel plate 114 are stacked. The battery module 20 is disposed on the side of the heat conducting plate 113 facing away from the flow channel plate 114, and the dehumidification assembly 200 is disposed on the side of the heat conducting plate 113 facing away from the flow channel plate 114. Of course, in other embodiments, the substrate 110 may also be a harmonica tube structure.

[0088] like Figures 4 to 8 As shown, the dehumidification component 200 includes a condensation element 210 and a fan 220 installed on the condensation element 210. The condensation element 210 is arranged on the substrate 110 of the plate body 100 and has a second flow channel 211. The second flow channel 211 has a second inlet end 2111 connected to the first inlet end 1111 and a second outlet end 2112 connected to the first outlet end 1112. The fan 220 includes a blade portion 221 and a driving portion 222. The blade portion 221 is located outside the condensation element 210, and the driving portion 222 is connected to the blade portion 221. The driving portion 222 is observed from a perspective perpendicular to the plate body 100. A portion of the driving portion 222 is located in the second flow channel 211 and is configured to rotate when the coolant flows from the second inlet end 2111 to the second outlet end 2112, thereby driving the blade portion 221 to rotate.

[0089] In the embodiment of the present application, the second flow channel 211 of the condensing member 210 is connected to the first flow channel 111 of the plate body 100. When the coolant flows into the first flow channel 111 of the plate body 100 from the first inlet end 1111, the coolant will also flow into the second flow channel 211 of the condensing member 210. In other words, the coolant is divided into two tributaries, one of which flows into the first flow channel 111 of the plate body 100, and the other flows into the second flow channel 211 of the condensing member 210. When the coolant flows from the second inlet end 2111 of the second flow channel 211 to the second outlet end 2112, it can drive the driving part 222 to rotate, so that the driving part 222 drives the fan blade part 221 to rotate, and after the fan blade part 221 rotates, it can drive the air around the dehumidification component 200 to flow. After the coolant flows through the second flow channel 211, the temperature of the condensation element 210 decreases, so that the air flowing around the dehumidification component 200 exchanges heat with the condensation element 210 with a lower temperature. When the temperature of the surrounding air is lower than the dew point temperature, the gas condenses to form condensed water, achieving a dehumidification effect. On the one hand, the dehumidification component 200 is arranged on the plate body 100, which can improve the space utilization rate of the battery pack 1a; on the other hand, the flow of the coolant can drive the driving part 222 to rotate, and then drive the fan blade part 221 to rotate, without the need for additional power consumption, and has the advantages of energy saving and environmental protection.

[0090] like Figures 4 to 8As shown, the dehumidification component 200 also includes a cover 230, which is covered on one side of the plate body 100 in the thickness direction and forms an air flow channel 233 with the plate body 100; the condensation element 210 and the fan 220 are located in the air flow channel 233; the cover 230 has an air inlet 231 and an air outlet 232 connected to the air flow channel 233; the fan blade part 221 has an air inlet side 2211 and an air outlet side 2212, the air inlet side 2211 faces the condensation element 210, and the air outlet side 2212 faces the air outlet 232.

[0091] In the embodiment of the present application, the housing 230 has an air inlet 231 and an air outlet 232. The air outlet side 2212 of the fan blade portion 221 faces the air outlet 232, and the air inlet side 2211 faces the condensation member 210. When the fan blade portion 221 rotates, it can drive the air around the dehumidification component 200 to flow and pass through the condensation member 210, so that the air can fully exchange heat with the condensation member 210, improve the heat exchange efficiency, and then improve the dehumidification effect. In addition, the opening direction of the air outlet 232 can limit the flow direction of the air to prevent the air from flowing disorderly.

[0092] In one embodiment, the flow area of ​​the air inlet 231 on the housing 230 is greater than the flow area of ​​the air outlet 232 on the housing 230. In this way, the air inlet 231 on the housing 230 can absorb the surrounding hot air into the housing 230 to the maximum extent to achieve condensation, thereby improving the condensation efficiency.

[0093] In one embodiment, the opening of the air outlet 232 faces away from the board body 100. As an example, the housing 230 is a cuboid and has a top plate 234 and a side plate 235, the side plate 235 is connected to the top plate 234; the air outlet 232 is provided on the top plate 234, and the air inlet 231 is provided on the side plate 235.

[0094] In the embodiment of the present application, the cover 230 is designed as a rectangular parallelepiped, which does not occupy too much volume on the surface of one side of the plate body 100. The air outlet 232 is provided on the top plate 234 of the cover 230, and the air inlet 231 is provided on the side plate 235 of the cover 230. When the fan blade 221 rotates, the air around the dehumidification component 200 enters the air flow channel 233 from the side of the cover 230, and after heat exchange with the condensation element 210 in the air flow channel 233, it is discharged from the top surface of the cover 230. The airflow is discharged from the top surface of the cover 230, but not directly toward the battery module 20, and will not affect the battery module 20.

[0095] The present application does not specifically limit the shape and number of the air inlet 231 and the air outlet 232. For example, in one embodiment, the housing 230 has one air inlet 231 and two air outlets 232, and the air inlet 231 may be in the shape of an elongated strip, so as to increase the amount of air intake. The two air outlets 232 are circular. Of course, in other embodiments, the housing 230 may also have multiple air inlets 231 and one or more air outlets 232, and the multiple air inlets 231 may be arranged at intervals along the length direction of the single cell 21. The air outlet 232 may be circular or in the shape of an elongated strip.

[0096] It should be noted that the flow area of ​​the air inlet 231 on the housing 230 is greater than the flow area of ​​the air outlet 232 on the housing 230, which means that the flow area of ​​all the air inlets 231 on the housing 230 is greater than the flow area of ​​all the air outlets 232 on the housing 230. For example, in the embodiment of the present application, the flow area of ​​one air inlet 231 of the housing 230 is greater than the flow area of ​​two air outlets 232.

[0097] In one embodiment, the air inlet 231 is in the shape of an elongated strip, and the length direction of the air inlet 231 is parallel to the width direction of the plate body 100 .

[0098] In the embodiment of the present application, the air inlet 231 is in the shape of an elongated strip, so that the cover 230 can also be set to be in the shape of an elongated strip, so that the cover 230 will not occupy too much area and volume of the plate body 100, and can still absorb air with the largest possible flow area.

[0099] like Figure 7 As shown, the side panels 235 include two first side panels 2351 and two second side panels 2352, and the length of the first side panels 2351 is greater than the length of the second side panels 2352. The two first side panels 2351 are arranged at intervals along the length direction of the panel body 100, and are both connected to the top panel 234, and the two second side panels 2352 are arranged at intervals along the width direction of the panel body 100, and are both connected to the top panel 234. The two first side panels 2351 and the two second side panels 2352 are alternately connected end to end to form a ring structure. One of the two first side panels 2351 is provided with an air inlet 231.

[0100] The air inlet 231 has a length of L1 and a width of W1, and the first side plate 2351 has a length of L2 and a width of W2; wherein, 4 / 5≤L1 / L2≤9 / 10, and 1 / 2≤W1 / W2≤4 / 5.

[0101] In the embodiment of the present application, since the length and width of the air inlet 231 and the length and width of the first side panel 2351 satisfy: 4 / 5≤L1 / L2≤9 / 10, 1 / 2≤W1 / W2≤4 / 5, the opening area of ​​the air inlet 2351 is larger, which increases the flow area of ​​the air inlet 2351 to absorb as much surrounding air as possible, thereby improving the condensation efficiency.

[0102] In one embodiment, the air inlet 231 is centrally disposed in the length direction of the first side plate 2351 .

[0103] Please continue reading Figure 7 The air inlet 231 is recessed from an edge of the first side plate 2351 away from the top plate 234 toward a direction close to the top plate 234 .

[0104] In the embodiment of the present application, the air inlet 231 is formed on a side edge of the first side plate 2351 away from the top plate 234, so that when the fan 220 rotates, the air can enter the cover 230 from the bottom of the cover 230, and then flow out from the air outlet 232 set on the top plate 234. This extends the time for the air to flow in the cover 230, and then the air can fully contact the condensation element 210 to achieve heat exchange, thereby improving the heat exchange efficiency.

[0105] It should be noted that, in addition to the air inlet 231 and the air outlet 232, the air flow channel 233 formed by the housing 230 and the board body 100 can be closed. When the fan 220 is working, the air flow channel 233 can be regarded as a negative pressure environment, so that the air around the housing 230 can be quickly sucked into the flow channel 233.

[0106] For example, one end of the two first side plates 2351 and the two second side plates 2352 of the cover shell 230 away from the top plate 234 is welded to the plate body 100 , or a sealant is applied to the joint between the cover shell 230 and the plate body 100 .

[0107] like Figure 4 and Figure 6 As shown, a concave-convex structure 210 a is provided on one side surface of the condensing element 210 facing the air inlet 231 .

[0108] In the embodiment of the present application, a concave-convex structure 210a is provided on one side surface of the condensation element 210 facing the air inlet 231. The concave-convex structure 210a can increase the heat exchange area between the condensation element 210 and the air, thereby improving the heat exchange efficiency.

[0109] Furthermore, the concave-convex structure 210a includes a plurality of fins 212 , each of which is in a long strip shape, and the extension direction of the fin 212 is perpendicular to the plate body 100 ; the plurality of fins 212 are arranged at intervals along the arrangement direction of the first inlet end 1111 and the first outlet end 1112 .

[0110] In the embodiment of the present application, the plurality of fins 212 are arranged at intervals along the arrangement direction of the first inlet end 1111 and the first outlet end 1112, and a gap is formed between two adjacent fins 212, and the gap extends in a direction perpendicular to the plate body 100. Since the opening direction of the air outlet 232 is in the direction away from the plate body 100, when the air enters the air flow channel 233 from the air inlet 231, it can contact the plurality of fins 212, and quickly flow along the gap in a direction away from the plate body 100, and finally be discharged from the air outlet 232. In this way, the extension direction of the gap between two adjacent fins 212 can increase the flow speed of the air flow and improve the heat exchange efficiency.

[0111] Of course, in other embodiments, the fin 212 may also be annular, and a plurality of fins 212 surround the outer peripheral surface of the condensation element 210 and are arranged at intervals along the length direction of the condensation element 210 .

[0112] In one embodiment, if Fig.11 As shown, the orthographic projection of the concavo-convex structure 210a on a target plane is a first projection S1, the orthographic projection of the air inlet 231 on the target plane is a second projection S2, the first projection S1 and the second projection S2 have an overlapping third projection S3, the ratio of the area of ​​the third projection S3 to the area of ​​the second projection S2 is R, R ≥ 90%; wherein the target plane is perpendicular to the board body 100. In one embodiment, the target plane is perpendicular to the length direction of the board body 100.

[0113] In the embodiment of the present application, since the ratio R of the area of ​​the third projection S3 to the area of ​​the second projection S2 is ≥90%, the concave-convex structure 210a almost covers the entire air inlet 231. In this way, when hot air enters the cover 230 from the air inlet 231, the concave-convex structure 210a can condense the hot air to the maximum extent, thereby improving the condensation efficiency.

[0114] Herein, R may be 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% or 100%.

[0115] In one embodiment, the area of ​​the first projection S1 is greater than the area of ​​the third projection S3. In the embodiment of the present application, since the area of ​​the first projection S1 is greater than the area of ​​the third projection S3, the condensation element 210 can condense the air coming in from the air inlet 231 at the fastest speed, further improving the condensation efficiency.

[0116] Please return to Figure 3The substrate 110 also has two third flow channels 112, which are respectively connected to the first inlet end 1111 and the first outlet end 1112; the second inlet end 2111 and the second outlet end 2112 of the second flow channel 211 are respectively connected to the first inlet end 1111 and the first outlet end 1112 through the two third flow channels 112; in the arrangement direction of the first joint 120 and the second joint 130, the two third flow channels 112 extend in a direction approaching each other.

[0117] In one embodiment, the flow area of ​​the third flow channel 112 is smaller than the flow area of ​​the first flow channel 111 .

[0118] In the embodiment of the present application, since the flow area of ​​the third flow channel 112 is smaller than the flow area of ​​the first flow channel 111, the flow rate of the coolant in the third flow channel 112 is smaller than the flow rate of the coolant in the first flow channel 111. This avoids affecting the cooling effect of the board body 100 on the battery module 20 due to excessive coolant diverted by the third flow channel 112.

[0119] like Figure 8 As shown, the flow channel wall of the condensing member 210 is provided with a groove 214, a part of the driving portion 222 is located in the groove 214, and another part of the driving portion 222 is located in the second flow channel 211, so that when the driving portion 222 is observed from a perspective perpendicular to the plate body 100, part of the driving portion 222 is located in the second flow channel 211. In one embodiment, the groove wall of the groove 214 can be arc-shaped to adapt to the outer peripheral shape of the driving portion 222 when rotating.

[0120] like Fig. 9 and Fig.10 As shown, the driving part 222 includes a rotating disk 2221, a rotating shaft 2222 and a plurality of driving plates 2223. The rotating disk 2221 is located in the second flow channel 211; one axial end of the rotating shaft 2222 is connected to the rotating disk 2221, and the other axial end of the rotating shaft 2222 is connected to the fan blade part 221. The plurality of driving plates 2223 are connected to a side surface of the rotating disk 2221 that is away from the rotating shaft 2222, and are arranged at intervals along the circumference of the rotating disk 2221.

[0121] In the embodiment of the present application, the plurality of driving plates 2223 can rotate after being flushed by the coolant, and then drive the fan blade portion 221 to rotate through the rotating shaft 2222 .

[0122] like Fig. 9 and Fig.10 As shown, the fan 220 further includes a sealed bearing 223 , which is sleeved on the outer periphery of the rotating shaft 2222 and located between the rotating disk 2221 and the fan blade portion 221 .

[0123] like Figure 6As shown, the condensing member 210 also has a mounting hole 213 connected to the second flow channel 211, and the sealing bearing 223 is sealed in the mounting hole 213. The sealing bearing 223 includes an inner ring and an outer ring, and the outer ring is sleeved on the outer periphery of the inner ring, and the outer ring and the inner ring can rotate relative to each other. The inner ring is fixedly sleeved on the outer periphery of the bearing 223, and the outer ring is connected to the hole wall of the mounting hole 213.

[0124] When the plurality of driving plates 2223 drive the rotating shaft 2222 and the fan blade portion 221 to rotate, the rotating shaft 2222 can drive the inner ring of the sealing bearing 223 to rotate relative to the outer ring.

[0125] In one embodiment, the cross-sectional shape obtained by cutting the driving sheet 2223 along a cutting plane is fan-shaped, and the vertices of multiple fans converge on the axis of the rotating shaft 2222; wherein the cutting plane is perpendicular to the axial direction of the rotating shaft 2222.

[0126] Of course, it is understandable that the shape of the drive sheet 2223 after sectioning is not limited to a sector shape. For example, in other embodiments, the drive portion 222 includes a rotating shaft 2222 and a plurality of drive sheets 2223, the plurality of drive sheets 2223 are arranged along the circumference of the rotating shaft 2222, and each drive sheet 2223 is arc-shaped.

[0127] like Fig.12 As shown, the present application also provides an outdoor energy storage device 1b, including a cabinet 30 and a plurality of battery packs 1a according to any of the above embodiments, wherein the plurality of battery packs 1a are disposed in the cabinet 30 and arranged in an array.

[0128] Since each battery pack 1a is provided with a cold plate 10, and the cold plate 10 has a dehumidification component 200, a dehumidification effect can be achieved around each battery pack 1a, ensuring that the humidity at each location in the outdoor energy storage device 1b remains consistent, avoiding stratification due to inconsistent humidity.

[0129] It is understandable that the outdoor energy storage device 1b can be an energy storage cabinet, an energy storage container, etc.

[0130] like Fig.13 As shown, the present application also provides an electric device 4, comprising a battery pack 1a according to any of the above embodiments, and the battery pack 1a supplies power to the electric device 4.

[0131] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0132] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0133] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0134] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0135] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A cold plate, characterized in that: include: A plate body having a first flow channel, wherein the first flow channel has a first inlet end and a first outlet end; as well as A dehumidification component includes a condensation element and a fan mounted on the condensation element, wherein the condensation element is arranged on the plate body and has a second flow channel, wherein the second flow channel has a second inlet end connected to the first inlet end and a second outlet end connected to the first outlet end, wherein the fan includes a blade portion and a driving portion, wherein the blade portion is located outside the condensation element, the driving portion is connected to the blade portion, and the driving portion is observed from a perspective perpendicular to the plate body, and a portion of the driving portion is located in the second flow channel, and the driving portion is configured to be driven by the coolant to rotate when the coolant flows from the second inlet end to the second outlet end, thereby driving the blade portion to rotate.

2. The cold plate according to claim 1, characterized in that The dehumidification assembly further comprises a cover shell, which is arranged on one side of the plate body in the thickness direction and forms an air flow channel with the plate body; the condensing element and the fan are located in the air flow channel; the cover shell has an air inlet and an air outlet communicated with the air flow channel; The fan blade portion has an air inlet side and an air outlet side, wherein the air inlet side faces the condensation element, and the air outlet side faces the air outlet.

3. The cold plate according to claim 2, characterized in that The flow area of ​​the air inlet on the housing is greater than the flow area of ​​the air outlet on the housing.

4. The cold plate according to claim 2, characterized in that The cover shell is a rectangular parallelepiped and has a top plate and side plates, the side plates are connected to the top plate, the air outlet is arranged on the top plate, and the air inlet is arranged on the side plates.

5. The cold plate according to claim 4, characterized in that The side panels include two first side panels and two second side panels, the two first side panels and the two second side panels are alternately connected end to end to form a ring structure, the length of the first side panel is greater than the length of the second side panel, and one of the two first side panels is provided with the air inlet; The air inlet is in the shape of an elongated strip, the length of the air inlet is L1, the width is W1, the length of the first side panel is L2, the width is W2; wherein, 4 / 5≤L1 / L2≤9 / 10, 1 / 2≤W1 / W2≤4 / 5.

6. The cold plate according to claim 4, characterized in that The air inlet is recessed from a side edge of the side plate away from the top plate toward a direction close to the top plate.

7. The cold plate according to claim 2, characterized in that A concave-convex structure is provided on a surface of one side of the condensing element facing the air inlet.

8. The cold plate according to claim 7, characterized in that The orthographic projection of the concave-convex structure on a target plane is a first projection, the orthographic projection of the air inlet on the target plane is a second projection, the first projection and the second projection have a third projection overlapping, and the ratio of the area of ​​the third projection to the area of ​​the second projection is R, and R ≥ 90%; Wherein, the target plane is perpendicular to the board body.

9. The cold plate according to claim 8, characterized in that An area of ​​the first projection is greater than an area of ​​the third projection.

10. The cold plate according to claim 7, characterized in that The concave-convex structure includes a plurality of fins, and the extending direction of the fins is perpendicular to the plate body; the plurality of fins are arranged at intervals along the arrangement direction of the first inlet end and the first outlet end.

11. The cold plate according to claim 1, characterized in that The plate body includes a substrate, a first joint and a second joint, the substrate has the first flow channel, the first joint is installed on the substrate and communicated with the first inlet end, and the second joint is installed on the substrate and communicated with the first outlet end; The dehumidification assembly is located between the first joint and the second joint.

12. The cold plate according to claim 11, characterized in that The substrate further has two third flow channels, which are respectively connected to the first inlet end and the first outlet end; the second inlet end and the second outlet end are respectively connected to the first inlet end and the first outlet end through the two third flow channels; In the arrangement direction of the first joint and the second joint, the two third flow channels extend towards each other.

13. The cold plate according to claim 12, characterized in that The flow area of ​​the third flow channel is smaller than the flow area of ​​the first flow channel.

14. The cold plate according to any one of claims 1 to 13, characterized in that: The driving unit comprises: a rotating disk, located in the second flow channel; a rotating shaft, one axial end of the rotating shaft being connected to the rotating disk, and the other axial end of the rotating shaft being connected to the fan blade portion; and A plurality of driving plates are connected to a surface of the rotating disk facing away from the rotating shaft and are arranged at intervals along the circumference of the rotating disk.

15. The cold plate according to claim 14, characterized in that The cross-sectional shape obtained by cutting the driving sheet along a section plane is a fan-shaped cross-section, and a plurality of vertices of the fan-shaped cross-section converge on the axis of the rotating shaft; Wherein, the section plane is perpendicular to the axial direction of the rotating shaft.

16. A battery pack, characterized in that: include: The cold plate according to any one of claims 1 to 15; as well as The battery module is arranged on one side surface of the cold plate in the thickness direction.

17. The battery pack according to claim 16, characterized in that: The plate body of the cold plate has a first area and a second area which are adjacent to each other. The battery module is arranged in the first area, and the dehumidification assembly is arranged in the second area.

18. An outdoor energy storage device, characterized in that: Comprising a plurality of battery packs as claimed in claim 16 or 17, wherein the plurality of battery packs are arranged in an array.

19. An electrical equipment, characterized in that: Comprising the battery pack according to claim 16 or 17, wherein the battery pack supplies power to the electrical device.

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