Energy storage cabinet and energy storage device

Abstract

The utility model discloses an energy storage cabinet and an energy storage device, and relates to the technical field of energy storage. The energy storage cabinet comprises a cabinet body which comprises a cabinet door; the first partition plate is fixed in the cabinet body and divides the internal space of the cabinet body into a battery bin and an electrical bin in the width direction of the cabinet body; the second partition plate is fixed in the electrical bin and divides the electrical bin into a liquid cooling bin and a current transformation bin, and the liquid cooling bin is located on the side, close to the top of the cabinet body, of the current transformation bin; a water collecting tank is formed in the front end, close to the cabinet door, of the second partition plate, a drainage pipe is arranged in the variable flow bin, one end of the drainage pipe is communicated with a drainage port of the water collecting tank, and the other end of the drainage pipe extends out of the cabinet body. According to the embodiment of the invention, rainwater entering the liquid cooling bin along the vent holes in the cabinet door can be collected through the water collecting tank formed at the front end of the partition plate of the second partition plate, and is discharged to the outside of the cabinet body along the water discharging pipe, so that the condition that water is accumulated in the liquid cooling bin is avoided, and the operation safety of the liquid cooling unit is ensured.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage cabinet and an energy storage device. Background Art

[0002] An energy storage cabinet is a device for storing electrical energy. An energy storage cabinet usually includes a cabinet body and an energy storage unit, a liquid cooling unit, etc. arranged in the cabinet body. In order to avoid the mutual influence of the generated heat, the energy storage unit and the liquid cooling unit are arranged in a battery compartment and a liquid cooling compartment separated in the cabinet body. As for the liquid cooling compartment where the liquid cooling unit is placed, the side panel of the cabinet body has ventilation holes connected to the liquid cooling compartment to achieve heat convection between the liquid cooling unit and the external environment, so as to ensure the stability of the operation of the liquid cooling unit. However, energy storage cabinets are usually set outdoors and are greatly affected by the external environment. For example, on rainy days, rainwater can easily enter the liquid cooling compartment along the ventilation holes on the side panels of the cabinet body, causing water accumulation in the liquid cooling compartment, thereby bringing safety hazards to the operation of the liquid cooling unit, and further affecting the safety of charging and discharging of the energy storage unit. Utility Model Content

[0003] A main purpose of the present application is to provide an energy storage cabinet and an energy storage device that improve the safety of liquid cooling unit operation.

[0004] In order to achieve the above application purpose, this application adopts the following technical solutions:

[0005] According to one aspect of the present application, there is provided an energy storage cabinet, comprising:

[0006] The cabinet body comprises a cabinet door; a first partition is fixed in the cabinet body and divides the internal space of the cabinet body into a battery compartment and an electrical compartment along the width direction of the cabinet body; a second partition is fixed in the electrical compartment and divides the electrical compartment into a liquid cooling compartment and a converter compartment, the liquid cooling compartment is located on the side of the converter compartment close to the top of the cabinet body; the cabinet door has a ventilation hole connected to the liquid cooling compartment, a water collecting trough is formed on the front end of the partition of the second partition close to the cabinet door, a drain pipe is arranged in the converter compartment, one end of the drain pipe is connected to the drain outlet of the water collecting trough, and the other end extends to the outside of the cabinet body.

[0007] In the implementation mode of the present application, rainwater entering the liquid cooling bin along the ventilation holes on the cabinet door can be collected by the water collecting trough formed at the front end of the partition of the second partition, and discharged to the outside of the cabinet along the drain pipe to avoid water accumulation in the liquid cooling bin, thereby ensuring the safety of the operation of the liquid cooling unit.

[0008] According to the energy storage cabinet described in one embodiment of the present application, a wire threading hole is also formed at the front end of the partition, and the wire threading hole is located on a side of the water collecting trough close to the battery compartment, and the hole of the wire threading hole is at least flush with the notch of the water collecting trough.

[0009] In the implementation mode of the present application, a threading hole for connecting the liquid cooling unit and the energy storage inverter is located at the front end of the partition to facilitate the operation of the operator and improve the efficiency of the electrical connection; at the same time, the opening of the threading hole is arranged to be at least flush with the notch of the water collecting trough to avoid the accumulated water in the water collecting trough from seeping into the inverter compartment along the threading hole, thereby ensuring the safety of the operation of the energy storage inverter.

[0010] According to the energy storage cabinet described in one embodiment of the present application, the drain outlet of the water collection tank is located on a side of the water collection tank away from the battery compartment, and the drain pipe is fixed on the wall of the converter compartment away from the battery compartment.

[0011] In the implementation manner of the present application, the position of the drain outlet of the sump is set to facilitate the installation of a drain pipe in the converter compartment, so as to reduce the space occupied by the drain pipe in the converter compartment and avoid interference with the energy storage converter.

[0012] According to the energy storage cabinet described in one embodiment of the present application, the energy storage cabinet further includes a liquid cooling unit, and the liquid cooling unit is located in the liquid cooling bin; a water injection joint is provided on the front end surface of the liquid cooling unit facing the cabinet door, and the orthographic projection of the water injection joint along the height direction of the cabinet body is located in the water collecting tank.

[0013] In the implementation manner of the present application, the coolant leaked from the water filling joint can be collected in the water collecting tank and then discharged out of the cabinet along the drain pipe to avoid water accumulation in the liquid cooling compartment.

[0014] According to the energy storage cabinet described in one embodiment of the present application, the front end face of the liquid cooling unit is also provided with a terminal head and a baffle; the terminal head is located on the side of the water injection joint close to the second partition, and the baffle is located between the water injection joint and the terminal head.

[0015] In the implementation manner of the present application, the provision of the baffle can prevent water droplets leaking from the water injection joint from directly dripping onto the wiring head, thereby ensuring the safety of the electrical connection between the liquid cooling unit and the energy storage converter.

[0016] According to the energy storage cabinet described in one embodiment of the present application, both side edges of the baffle in the width direction of the cabinet have a first side wing facing the second partition, and the terminal head is located in the area surrounded by the baffle and the two first side wings.

[0017] In the implementation manner of the present application, the baffle plate and the two first side wings surround the terminal head on the liquid cooling unit as a whole to prevent water droplets dripping on the baffle plate from sliding along the edge of the baffle plate onto the terminal head, thereby further ensuring the safety of the electrical connection between the liquid cooling unit and the energy storage inverter.

[0018] According to an energy storage cabinet described in one embodiment of the present application, the edge of the first side wing away from the baffle is inclined toward the direction close to the terminal head, and the orthographic projection of the edge of the first side wing away from the baffle in the height direction of the cabinet is located in the water collection tank.

[0019] In the implementation manner of the present application, the first side wing is tilted to ensure that water droplets sliding down the first side wing fall into the water collecting trough, thereby improving the collection efficiency of the accumulated water in the liquid cooling bin.

[0020] According to the energy storage cabinet described in one embodiment of the present application, the edge of the baffle away from the liquid cooling unit is inclined toward the direction close to the second partition, the edge of the baffle away from the liquid cooling unit is located in the water collecting tank in the height direction of the cabinet, and the two side edges of the baffle in the width direction of the cabinet have second side wings facing away from the second partition.

[0021] In the embodiment of the present application, the baffle is provided with a certain slope, and the second side wing is used to block the water droplets dripping on the baffle, so as to ensure that the water droplets dripping on the baffle can only drip along the edge of the baffle away from the liquid cooling unit, and then drip into the water collecting tank.

[0022] According to the energy storage cabinet described in one embodiment of the present application, the edge of the baffle away from the battery compartment is inclined toward the direction close to the second partition, the orthographic projection of the edge of the baffle away from the battery compartment in the height direction of the cabinet is located in the water collecting tank, and the edge of the baffle close to the battery compartment and the edge away from the liquid cooling unit both have a third side wing facing away from the second partition.

[0023] In the implementation manner of the present application, the baffle is provided with a certain slope, and the third side wing is used to block the water droplets dripping on the baffle, so as to ensure that the water droplets dripping on the baffle can only drip along the edge of the baffle away from the battery compartment, and then drip into the water collection tank.

[0024] According to the energy storage cabinet described in one embodiment of the present application, the baffle has a guide groove extending in an inclined direction.

[0025] According to one aspect of the present application, there is provided an energy storage device, comprising: an energy storage unit and the energy storage cabinet described in the above aspect, wherein the energy storage unit is located in the battery compartment.

[0026] In the implementation manner of the present application, for the energy storage device including the above-mentioned energy storage cabinet, the normally operating liquid cooling unit can achieve effective heat dissipation of the environment inside the battery compartment to ensure the safety of charging and discharging of the energy storage unit, and further ensure the safety of the operation of the energy storage device.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0029] Figure 1 is a schematic structural diagram of a household energy storage system according to an exemplary embodiment.

[0030] Figure 2 It is a schematic structural diagram of an energy storage cabinet according to an exemplary embodiment.

[0031] Figure 3 It is a schematic diagram of the internal structure of an energy storage cabinet according to an exemplary embodiment.

[0032] Figure 4 It is a schematic diagram of the side-view axial structure of an energy storage cabinet according to an exemplary embodiment.

[0033] Figure 5 yes Figure 4 An enlarged structural diagram of area A on the energy storage cabinet is shown.

[0034] Figure 6 yes Figure 4 The schematic diagram of the top axial structure of the energy storage cabinet is shown.

[0035] Figure 7 yes Figure 6 An enlarged structural diagram of area B on the energy storage cabinet is shown.

[0036] Figure 8 It is a schematic diagram of an enlarged structure of area B on another energy storage cabinet according to an exemplary embodiment.

[0037] Fig. 9 It is a schematic diagram of an enlarged structure of area B on another energy storage cabinet according to an exemplary embodiment.

[0038] Fig.10 It is a schematic diagram of the enlarged structure of area B on another energy storage cabinet according to an exemplary embodiment.

[0039] The reference numerals are described as follows:

[0040] 100, energy storage device; 200, electric energy conversion device; 300, user load;

[0041] 10. Energy storage cabinet;

[0042] 1. Energy storage cabinet; 2. Energy storage unit;

[0043] 11. Cabinet; 12. First partition; 13. Second partition; 14. Liquid cooling unit; 15. Energy storage converter; 16. Liquid cooling pipeline; 17. Circuit breaker; 18. High-voltage junction box; 19. Low-voltage junction box;

[0044] 111. Cabinet door; 112. Ventilation hole; 113. Battery compartment; 114. Electrical compartment; 115. Liquid cooling compartment; 116. Converter compartment; 117. Storage rack;

[0045] 131. water collection tank; 132. drainage pipe; 133. threading hole; 134. connector;

[0046] 141. Water injection joint; 142. Connection head; 143. Baffle; 144. First wing; 145. Second wing; 146. Third wing. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] At present, green energy mainly includes solar energy, wind energy, etc. However, solar energy and wind energy generally have problems of strong intermittency and large volatility, which will cause unstable voltage of the green power grid (not enough electricity during peak hours and too much electricity during low hours). Unstable voltage will cause damage to electricity. Therefore, it may cause the problem of "wind and solar power abandonment" due to insufficient electricity demand or insufficient grid acceptance capacity.

[0050] To solve the problem of insufficient electricity demand or insufficient grid acceptance capacity, we must rely on energy storage devices. That is, the energy storage device converts electrical energy into other forms of energy through physical or chemical means and stores it, and then converts the energy stored in the energy storage device into electrical energy when needed. In simple terms, the energy storage device is similar to a large "power bank", which stores electrical energy when there is sufficient light energy and wind energy, and releases the stored electrical energy when needed.

[0051] 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:

[0052] (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;

[0053] (2) Small and medium-sized energy storage cabinets used in industrial and commercial energy storage scenarios (banks, shopping malls, etc.) on the user side, as well as small household energy storage boxes used in home energy storage scenarios on the user side, mainly operate in the "peak shaving and valley filling" mode. 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, as well as 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.

[0054] Take the household energy storage scenario in user-side energy storage as an example to illustrate. Figure 1 A household energy storage system is shown, which includes an energy storage device 100 and an electric energy conversion device 200 (such as a photovoltaic panel), and a user load 300 (such as a street lamp, a household appliance, etc.). Specifically, the electric energy conversion device 200 can convert solar energy into electric energy during the period of low electricity prices, and store it through the energy storage device 100, and then supply the user load 300 for use during the peak electricity price, or supply the user load 300 for use when the power grid is out of power / power outage.

[0055] 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 100 includes at least one chemical battery, using the chemical elements in the chemical battery as the energy storage medium, 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 the electric energy is scarce for use.

[0056] The embodiment of the present application provides an energy storage device 100, which may be an energy storage box, an energy storage cabinet 10, etc., which is composed of energy storage units 2. Next, the energy storage device 100 is explained in detail by taking the energy storage cabinet 10 as an example.

[0057] Figure 2 The schematic diagram of the structure of an energy storage cabinet 10 provided in the embodiment of the present application is illustrated. Figure 3 The internal structure diagram of an energy storage cabinet 10 provided in the embodiment of the present application is illustrated. Figure 2 and Figure 3 As shown, the energy storage cabinet 10 includes: an energy storage unit 2 and an energy storage cabinet 1 , and the energy storage unit 2 is located in the energy storage cabinet 1 .

[0058] Among them, the energy storage unit 2 can be a single cell, or a battery pack, energy storage box, etc. composed of single cells. The single cell can be a lithium-ion battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, a magnesium-ion battery, etc., and the single cell can be cylindrical, flat, rectangular, etc., and the implementation mode of the present application does not limit this.

[0059] In some embodiments, Figure 3 As shown, the energy storage cabinet 1 includes a cabinet body 11 and partitions (a first partition 12 and a second partition 13) arranged in the cabinet body 11. The partitions divide the internal space of the cabinet body 11 into a battery compartment 113 and a liquid cooling compartment 115 along the width direction of the cabinet body 11. The energy storage unit 2 is placed in the battery compartment 113, and the liquid cooling unit 14 is placed in the liquid cooling compartment 115.

[0060] Among them, Figure 3 As shown, the energy storage cabinet 1 also includes a liquid cooling pipe 16 arranged in the battery compartment 113, and the water inlet and outlet of the liquid cooling pipe 16 extend to the liquid cooling compartment 115, and are respectively connected to the water inlet joint and the water outlet joint of the liquid cooling unit 14, so that when the energy storage unit 2 in the battery compartment 113 is charged and discharged, the liquid cooling unit 14 cools down and dissipates the heat in the battery compartment 113, thereby ensuring that the energy storage unit 2 is charged and discharged at a suitable ambient temperature.

[0061] Alternatively, if Figure 3 As shown, a multi-layered storage rack 117 can be provided in the battery compartment 113 of the cabinet 11 , so that energy storage units 2 can be placed on multiple layers of the storage rack 117 to improve the energy storage capacity of the energy storage cabinet 10 .

[0062] In some embodiments, the cabinet 11 includes a bottom plate, a top plate, a left side plate, a right side plate, a front side plate and a back side plate, so that the interior space of the cabinet 11 is surrounded by the bottom plate, the top plate, the left side plate, the right side plate, the front side plate and the back side plate.

[0063] Among them, the front side panels and the back side panels are distributed along the depth direction of the cabinet body 11. The front side panels of the cabinet body 11 can be set as a cabinet door 111 that can be opened or closed, so that by opening the cabinet door 111, the energy storage unit 2 in the battery compartment 113 can be assembled and replaced, and the liquid cooling unit 14 in the liquid cooling compartment 115 can be installed and repaired.

[0064] Optionally, a plurality of hanging ears may be provided on the top of the cabinet 11 (i.e., the upper surface of the top plate) so as to facilitate the lifting and transportation of the energy storage cabinet 1 by connecting the hanging ears with the hanging ropes. In addition, a warning device such as an indicator light may be provided on the cabinet door 111 of the cabinet 11 to indicate the working state (such as charging state and discharging state) of the energy storage unit 2 in the battery compartment 113 of the cabinet 11 through the indicator light.

[0065] In the embodiment of the present application, when the liquid cooling unit 14 is running to cool the energy storage unit 2 in the battery compartment 113, the liquid cooling unit 14 will inevitably generate heat. Figure 2 As shown, the cabinet door 111 included in the cabinet body 11 is provided with ventilation holes 112 to achieve air convection between the liquid cooling bin 115 and the external environment. Of course, the back side plate included in the cabinet body 11 can also be provided with ventilation holes 112, so that air convection between the liquid cooling bin 115 and the external environment can be achieved on both the front and back sides of the cabinet body 11, so as to improve the heat dissipation effect of the liquid cooling unit 14 itself.

[0066] However, the energy storage cabinet 1 is usually used outdoors. On rainy days, rainwater can easily enter the liquid cooling compartment 115 along the cabinet door 111 of the cabinet body 11 and the ventilation holes 112 on the back panel, causing water accumulation in the liquid cooling compartment 115, thereby posing a safety hazard to the operation of the liquid cooling unit 14. In this way, the energy storage unit 2 in the battery compartment 113 is prone to operate in a high temperature environment, increasing the safety hazard of charging and discharging the energy storage unit 2.

[0067] The embodiment of the present application provides an energy storage cabinet 1, which can discharge rainwater that enters the liquid cooling bin 115 along the cabinet door 111 and the ventilation holes 112 on the back side panel of the cabinet body 11, so as to avoid water accumulation in the liquid cooling bin 115 and improve the safety of the operation of the liquid cooling unit 14. For the energy storage cabinet 10 including the energy storage cabinet 1, the normally operating liquid cooling unit 14 can achieve effective heat dissipation in the environment of the battery bin 113, thereby ensuring the safety of charging and discharging of the energy storage unit 2.

[0068] Among them, rainwater entering through the ventilation holes 112 on the cabinet door 111 and rainwater entering through the ventilation holes 112 on the back panel can be treated in the same or similar manner. The following is a detailed explanation taking rainwater entering the liquid cooling chamber 115 through the ventilation holes 112 on the cabinet door 111 as an example.

[0069] like Figure 2 , 4 and Figure 5 As shown, the energy storage cabinet 1 includes: a cabinet 11, including a cabinet door 111; a first partition 12, fixed in the cabinet 11, and dividing the internal space of the cabinet 11 into a battery compartment 113 and an electrical compartment 114 along the width direction of the cabinet 11; a second partition 13, fixed in the electrical compartment 114, and dividing the electrical compartment 114 into a liquid cooling compartment 115 and a converter compartment 116, and the liquid cooling compartment 115 is located on the side of the converter compartment 116 close to the top of the cabinet 11. The cabinet door 111 has a ventilation hole 112 connected to the liquid cooling compartment 115, and a water collecting tank 131 is formed on the front end of the partition near the cabinet door 111 on the second partition 13, and a drain pipe 132 is arranged in the converter compartment 116, one end of the drain pipe 132 is connected to the drain port of the water collecting tank 131, and the other end extends to the outside of the cabinet 11.

[0070] In this way, rainwater entering the liquid cooling bin 115 through the ventilation holes 112 on the cabinet door 111 can be collected by the water collecting trough 131 formed at the front end of the partition of the second partition 13, and discharged to the outside of the cabinet body 11 along the drain pipe 132, so as to avoid water accumulation in the liquid cooling bin 115, thereby ensuring the safety of the operation of the liquid cooling unit 14.

[0071] Optionally, the drain pipe 132 and the drain outlet of the water collecting tank 131 can be fixedly connected by welding to ensure the sealing of the connection between the drain pipe 132 and the drain outlet to avoid leakage during the drainage process. In addition, a one-way valve can be provided between the drain pipe 132 and the drain outlet of the water collecting tank 131, or on the drain pipe 132, so as to prevent external debris from entering the liquid cooling tank 115 along the drain pipe 132 while draining the accumulated water in the water collecting tank 131, thereby affecting the safety of the operation of the liquid cooling unit 14 in the liquid cooling tank 115.

[0072] In some embodiments, the liquid cooling chamber 115 is used to place the liquid cooling unit 14, that is, Figure 4 As shown, the energy storage cabinet 1 also includes a liquid cooling unit 14 located in the liquid cooling bin 115 .

[0073] The front end of the second partition 13 may be a portion of the second partition 13 extending out of the liquid cooling unit 14. Figure 4 The energy storage cabinet 1 also includes a liquid cooling pipe 16 fixed in the battery compartment 113, and the liquid cooling unit 14 is connected to the liquid cooling pipe 16, so that when the liquid cooling unit 14 is running, the environment in the battery compartment 113 can be effectively dissipated to ensure the safety of charging and discharging of the energy storage unit 2 in the battery compartment 113.

[0074] In some embodiments, the converter compartment 116 is used to place the energy storage converter 15. Figure 4 As shown, the energy storage cabinet 1 may further include an energy storage converter 15 located in the converter compartment 116 .

[0075] The energy storage converter 15 is used to be electrically connected to the external power grid and the energy storage unit 2 in the battery compartment 113, so as to realize the charging of the energy storage unit 2 by the external power grid through the AC-DC conversion of the energy storage converter 15, or to realize the power supply of the energy storage unit 2 to the power load through the DC-AC conversion of the energy storage converter 15. In addition, the energy storage converter 15 is also electrically connected to the liquid cooling unit 14 in the liquid cooling compartment 115, so as to realize the power supply of the liquid cooling unit 14 by the external power grid through the AC-DC conversion, or to realize the power supply of the liquid cooling unit 14 by the energy storage unit 2.

[0076] It should be noted that if Figure 6 As shown, the energy storage cabinet 1 also includes a circuit breaker 17, a high-voltage junction box 18, and a low-voltage junction box 19. The energy storage inverter 15 is electrically connected to the external power grid through the circuit breaker 17, and is electrically connected to the energy storage unit 2 through the high-voltage junction box 18. The energy storage inverter 15 is also electrically connected to the liquid cooling unit 14 through the high-voltage junction box 18 and the low-voltage junction box 19, respectively.

[0077] In the implementation mode of the present application, the liquid cooling compartment 115 is used to set the liquid cooling unit 14, and the inverter compartment 116 is used to set the energy storage inverter 15. The liquid cooling unit 14 needs to be electrically connected to the energy storage inverter 15. At this time, a threading hole 133 can be set on the second partition 13 to facilitate the arrangement of the connecting wires between the liquid cooling unit 14 and the energy storage inverter 15.

[0078] In some embodiments, Figure 7 As shown, a threading hole 133 is also formed at the front end of the partition, that is, the threading hole 133 is located on the side of the cabinet door 111 close to the cabinet body 11, so that the liquid cooling unit 14 and the energy storage inverter 15 are respectively installed in the liquid cooling compartment 115 and the inverter compartment 116, which is convenient for the operation of the operator and improves the electrical connection efficiency between the liquid cooling unit 14 and the energy storage inverter 15.

[0079] Alternatively, if Figure 7 As shown, a connector 134 having male and female connectors can be directly fixed at the threading hole 133, and the male connector of the connector 134 faces the liquid cooling chamber 115, and the female connector faces the converter chamber 116. At this time, a first connecting line can be set between the connector 134 and the liquid cooling unit 14, and a second connecting line can be set between the connector 134 and the energy storage converter 15, which can not only improve the sealing of the threading hole 133, but also improve the electrical connection efficiency between the liquid cooling unit 14 and the energy storage converter 15.

[0080] In some embodiments, the opening of the threading hole 133 is at least flush with the notch of the water collecting tank 131. In this way, the accumulated water in the water collecting tank 131 can be prevented from infiltrating into the variable flow chamber 116 along the threading hole 133, thereby ensuring the safety of the operation of the energy storage converter 15 in the variable flow chamber 116. For example, the opening of the threading hole 133 is flush with the notch of the water collecting tank 131, that is, the opening of the threading hole 133 and the notch of the water collecting tank 131 are located in the same plane. For the water collecting tank 131 and the threading hole 133 included in the front end of the partition, the water collecting tank 131 can be formed by stamping on the upper surface of the front end of the partition (i.e., the surface facing the liquid cooling chamber 115), and the threading hole 133 can be formed by stamping on the lower surface of the front end of the partition (i.e., the surface facing the variable flow chamber 116) to ensure that the opening of the threading hole 133 is at least flush with the notch of the water collecting tank 131.

[0081] The threading hole 133 may be located on the side of the water collecting tank 131 away from the battery compartment 113. In this case, the water collecting tank 131 may extend to the edge of the front end of the partition close to the battery compartment 113 to increase the area of ​​the water collecting tank 131. Figure 6 and Figure 7 As shown, the threading hole 133 is located on one side of the water collecting groove 131 close to the battery compartment 113 . At this time, the water collecting groove 131 can extend to the edge of the front end of the partition away from the battery compartment 113 to increase the area of ​​the water collecting groove 131 .

[0082] Further, taking the case where the threading hole 133 is located on the side of the water collecting tank 131 close to the battery compartment 113 as an example, the drainage port of the water collecting tank 131 may be located on the side of the water collecting tank 131 away from the battery compartment 113, and the drainage pipe 132 is fixed on the wall of the converter compartment 116 away from the battery compartment 113. In this way, the space occupied by the drainage pipe 132 in the converter compartment 116 can be effectively reduced, thereby avoiding the problem of interference with the energy storage converter 15.

[0083] Among them, combined with the above, the water collecting trough 131 extends to the edge position of the front end of the partition away from the battery compartment 113. At this time, the drain outlet of the water collecting trough 131 is close to the wall of the converter compartment 116 away from the battery compartment 113, so that a straight drain pipe 132 can be set to be sealed and connected to the drain outlet of the water collecting trough 131 to reduce the space occupied by the drain pipe 132 in the converter compartment 116.

[0084] In the embodiment of the present application, when a liquid cooling unit 14 is arranged in the liquid cooling warehouse 115, the accumulated water in the liquid cooling warehouse 115 may be rainwater entering through the ventilation holes 112 on the cabinet door 111, or may be accumulated water caused by leakage of the external joint of the liquid cooling unit 14.

[0085] In some embodiments, Figure 7As shown, a water injection joint 141 is provided on the front end surface of the liquid cooling unit 14 facing the cabinet door 111 , and the orthographic projection of the water injection joint 141 along the height direction of the cabinet body 11 is located in the water collecting tank 131 .

[0086] The water injection joint 141 is used to communicate with an external water injection pipe, so that when the coolant in the liquid cooling unit 14 is missing, the coolant can be replenished through the water injection pipe. In this way, the coolant leaking from the water injection joint 141 can be collected in the water collecting tank 131, and then discharged to the outside of the cabinet 11 along the drain pipe 132, so as to avoid water accumulation in the liquid cooling chamber 115.

[0087] In some embodiments, a front end surface of the liquid cooling unit 14 facing the cabinet door 111 is provided with a water inlet joint and a water outlet joint, and the orthographic projections of the water inlet joint and the water outlet joint along the height direction of the cabinet body 11 are both located in the water collecting tank 131 .

[0088] The water inlet joint and the water outlet joint are respectively connected to the water inlet and the water outlet of the liquid cooling pipe 16, so as to facilitate the circulation of the coolant in the battery compartment 113. When the liquid cooling unit 14 is running, if there is a coolant leak at the water inlet joint and the water outlet joint, the leaked coolant can be collected in the water collecting tank 131, and then discharged out of the cabinet 11 along the drain pipe 132, so as to avoid water accumulation in the liquid cooling compartment 115.

[0089] In the implementation manner of the present application, the liquid cooling unit 14 is electrically connected to the energy storage converter 15 , and the liquid cooling unit 14 is provided with a wiring terminal 142 , such as a high-voltage wiring terminal and a low-voltage wiring terminal.

[0090] Alternatively, if Figure 7 As shown, the terminal head 142 is located at the front end surface of the liquid cooling unit 14 (the end surface facing the cabinet door 111), so that electrical connection can be performed after the cabinet door 111 of the cabinet body 11 is opened, so as to facilitate the user's operation.

[0091] In some embodiments, Figure 8 As shown, the terminal head 142 is located on the side of the water injection joint 141 close to the second partition 13, and the front end surface of the liquid cooling unit 14 is also provided with a baffle 143, which is located between the water injection joint 141 and the terminal head 142. In this way, the setting of the baffle 143 can prevent the water droplets leaking from the water injection joint 141 from directly dripping on the terminal head 142, so as to ensure the safety of the electrical connection between the liquid cooling unit 14 and the energy storage converter 15; at the same time, the water droplets dripping on the baffle 143 can flow into the water collecting tank 131 along the baffle 143, so as to collect the liquid droplets leaking from the water injection joint 141.

[0092] In some embodiments, Figure 8As shown, both side edges of the baffle 143 in the width direction of the cabinet 11 have first side wings 144 facing the second partition 13, and the terminal 142 is located in the area surrounded by the baffle 143 and the two first side wings 144. In this way, the terminal 142 on the liquid cooling unit 14 can be surrounded by the baffle 143 and the two first side wings 144 as a whole, so as to prevent water drops dripping on the baffle 143 from sliding along the edge of the baffle 143 and falling on the terminal 142, thereby further ensuring the safety of the electrical connection between the liquid cooling unit 14 and the energy storage converter 15.

[0093] Optionally, the baffle 143 has a guide groove extending between the two first side wings 144 to drain water droplets dripping on the baffle 143 through the guide groove to prevent the water droplets from sliding along the baffle 143 away from the edge of the liquid cooling unit 14 and falling onto the terminal head 142.

[0094] Alternatively, if Figure 8 As shown, the edge of the first side wing 144 away from the baffle 143 is inclined toward the direction close to the terminal head 142, and the orthographic projection of the edge of the first side wing 144 away from the baffle 143 in the height direction of the cabinet 11 is located in the water collecting groove 131. In this way, by the inclined setting of the first side wing 144, it is ensured that the water droplets sliding down the first side wing 144 just drop into the water collecting groove 131, thereby improving the collection efficiency of the accumulated water in the liquid cooling chamber 115.

[0095] In some embodiments, Fig. 9 As shown, the edge of the baffle 143 away from the liquid cooling unit 14 is inclined toward the direction close to the second partition 13, and the orthographic projection of the edge of the baffle 143 away from the liquid cooling unit 14 in the height direction of the cabinet 11 is located in the water collecting tank 131. In this way, the baffle 143 is set to have a certain slope to ensure that the water droplets dripping on the baffle 143 drip into the water collecting tank 131 along the edge of the baffle 143 away from the liquid cooling unit 14.

[0096] The baffle 143 extends away from the edge of the liquid cooling unit 14 and extends out from the terminal head 142 disposed on the front end surface of the liquid cooling unit 14 to prevent water drops dripping along the edge of the baffle 143 from dripping onto the terminal head 142 .

[0097] Furthermore, if Fig. 9 As shown, both side edges of the baffle 143 in the width direction of the cabinet 11 have second side wings 145 facing away from the second partition 13, so as to ensure that water droplets dripping on the baffle 143 can only drip along the edge of the baffle 143 away from the liquid cooling unit 14 through the obstruction of the second side wings 145.

[0098] In other embodiments, Figure 6 and Fig.10As shown, the edge of the baffle 143 away from the battery compartment 113 is inclined toward the direction close to the second partition 13, and the orthographic projection of the edge of the baffle 143 away from the battery compartment 113 in the height direction of the cabinet 11 is located in the water collection tank 131. In this way, the baffle 143 is set to have a certain slope to ensure that the water droplets dripping on the baffle 143 drip into the water collection tank 131 along the edge of the baffle 143 away from the battery compartment 113.

[0099] Furthermore, if Fig.10 As shown, the edge of the baffle 143 close to the battery compartment 113 and the edge away from the liquid cooling unit 14 both have a third side wing 146 facing away from the second partition 13, so as to ensure that the water droplets dripping on the baffle 143 can only drip along the edge of the baffle 143 away from the battery compartment 113 through the obstruction of the third side wing 146.

[0100] It should be noted that, for the above two embodiments, the baffle 143 has a guide groove extending in an inclined direction, so as to improve the convergence efficiency of water droplets on the baffle 143 by guiding the water droplets through the guide groove. The guide groove can be a straight groove or a wavy groove.

[0101] In the embodiments of the present application, 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. Terms such as "installed", "connected", "connected", and "fixed" 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 embodiments of the present application can be understood according to the specific circumstances.

[0102] In the description of the implementation methods of the present application, it needs to 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 implementation methods of the present application 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, cannot be understood as a limitation on the implementation methods of the present application.

[0103] 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 implementation of the present application. 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.

[0104] The above are only preferred embodiments of the implementation methods of the present application, and are not intended to limit the implementation methods of the present application. For those skilled in the art, the implementation methods of the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the implementation methods of the present application shall be included in the protection scope of the implementation methods of the present application.

Claims

1. An energy storage cabinet, characterized in that: include: A cabinet body (11), comprising a cabinet door (111); A first partition (12) is fixed in the cabinet (11) and divides the internal space of the cabinet (11) into a battery compartment (113) and an electrical compartment (114) along the width direction of the cabinet (11); A second partition (13) is fixed in the electrical compartment (114) and divides the electrical compartment (114) into a liquid cooling compartment (115) and a flow conversion compartment (116), wherein the liquid cooling compartment (115) is located on one side of the flow conversion compartment (116) close to the top of the cabinet (11); The cabinet door (111) has a ventilation hole (112) connected to the liquid cooling chamber (115); a water collecting trough (131) is formed at the front end of the partition on the second partition (13) close to the cabinet door (111); a drain pipe (132) is arranged in the variable flow chamber (116); one end of the drain pipe (132) is connected to the drain outlet of the water collecting trough (131), and the other end extends to the outside of the cabinet body (11).

2. The energy storage cabinet according to claim 1, characterized in that: A threading hole (133) is also formed at the front end of the partition, and the threading hole (133) is located on a side of the water collecting tank (131) close to the battery compartment (113), and the opening of the threading hole (133) is at least flush with the notch of the water collecting tank (131).

3. The energy storage cabinet according to claim 2, characterized in that: The drainage port of the water collecting tank (131) is located on a side of the water collecting tank (131) away from the battery compartment (113), and the drainage pipe (132) is fixed on a compartment wall of the converter compartment (116) away from the battery compartment (113).

4. The energy storage cabinet according to claim 1, characterized in that: The energy storage cabinet (1) further comprises a liquid cooling unit (14), wherein the liquid cooling unit (14) is located in the liquid cooling bin (115); A water injection joint (141) is provided on the front end surface of the liquid cooling unit (14) facing the cabinet door (111); the orthographic projection of the water injection joint (141) in the height direction of the cabinet body (11) is located in the water collecting tank (131).

5. The energy storage cabinet according to claim 4, characterized in that: The front end surface of the liquid cooling unit (14) is also provided with a terminal head (142) and a baffle (143); The connection head (142) is located on a side of the water injection joint (141) close to the second partition plate (13), and the baffle plate (143) is located between the water injection joint (141) and the connection head (142).

6. The energy storage cabinet according to claim 5, characterized in that: Both side edges of the baffle (143) in the width direction of the cabinet (11) have first side wings (144) facing the second partition (13), and the terminal head (142) is located in the area surrounded by the baffle (143) and the two first side wings (144).

7. The energy storage cabinet according to claim 6, characterized in that: The edge of the first side wing (144) away from the baffle (143) is inclined in a direction close to the terminal head (142), and the orthographic projection of the edge of the first side wing (144) away from the baffle (143) in the height direction of the cabinet (11) is located within the water collection tank (131).

8. The energy storage cabinet according to claim 5, characterized in that: The edge of the baffle (143) away from the liquid cooling unit (14) is inclined in a direction close to the second partition (13); the orthographic projection of the edge of the baffle (143) away from the liquid cooling unit (14) in the height direction of the cabinet (11) is located within the water collecting tank (131), and both side edges of the baffle (143) in the width direction of the cabinet (11) have second side wings (145) facing away from the second partition (13).

9. The energy storage cabinet according to claim 5, characterized in that: The edge of the baffle (143) away from the battery compartment (113) is inclined in a direction close to the second partition (13); the orthographic projection of the edge of the baffle (143) away from the battery compartment (113) in the height direction of the cabinet (11) is located within the water collecting tank (131); and the edge of the baffle (143) close to the battery compartment (113) and the edge away from the liquid cooling unit (14) both have a third side wing (146) facing away from the second partition (13).

10. The energy storage cabinet according to claim 8 or 9, characterized in that: The baffle (143) has a guide groove extending in an inclined direction.

11. An energy storage device, characterized in that: include: An energy storage unit (2) and an energy storage cabinet (1) as described in any one of claims 1 to 10, wherein the energy storage unit (2) is located in the battery compartment (113).

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