Energy storage container

Abstract

The present invention discloses an energy storage container, comprising a box body, an energy storage device, a coolant circulation supply device, a piping system, an electric power conversion device, an output control device, and a refrigeration device. The box body is provided with a first compartment, a second compartment, a third compartment, and a fourth compartment. The second compartment and the third compartment are adjacent to the first compartment, and the third compartment and the fourth compartment are adjacent. The first compartment and the fourth compartment each form a closed chamber, and the second compartment and the third compartment are both connected to the outside. The energy storage device is placed in the first compartment; the coolant circulation supply device is placed in the second compartment, and a first heat dissipation fan is provided therein; the piping system connects a liquid supply port and a liquid return port; the electric power conversion device is placed in the third compartment, and a second heat dissipation fan is provided therein; the output control device is placed in the fourth compartment; and the refrigeration device is placed in the fourth compartment. The various electric devices of the present invention are convenient to connect, reduce costs, meet heat dissipation requirements, and are waterproof and dustproof.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage batteries, and in particular to an energy storage container. Background Art

[0002] At present, the energy storage battery device in the energy storage system can not only store the excess power generated by the power generation system, but also transmit electricity to the power grid when the power generation system generates less power. In actual applications, the energy storage battery device needs to be used in conjunction with a power conversion device (such as a DC-DC converter), a power distribution device, and a convergence device. The energy storage battery device and the corresponding power device are arranged in a closed container and heat is dissipated by air conditioning. However, the air conditioning dissipates heat from the overall internal environment of the container, and then uses the low temperature environment to dissipate heat from the power equipment such as the energy storage battery device in the container. Since the internal circulation fan of the integrated precision air conditioning cannot accurately deliver the (cold and hot) airflow to each battery module, it causes temperature imbalance between the battery modules inside the container, consumes too much energy, is costly, and affects the heat dissipation effect. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and provide an energy storage container to facilitate the connection of various power equipment, reduce costs, meet heat dissipation requirements and achieve waterproof and dustproof properties.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Technical Solution 1: An energy storage container includes a box body, wherein a first compartment, a second compartment, a third compartment, and a fourth compartment are provided therein, wherein the second compartment and the third compartment are adjacent to the first compartment, and the third compartment is adjacent to the fourth compartment, wherein the first compartment and the fourth compartment each form a closed chamber, and the second compartment and the third compartment are both connected to the outside; an energy storage device, which is placed in the first compartment and includes a plurality of battery modules; a coolant circulation supply device, which is placed in the second compartment and includes a liquid supply port and a liquid return port, and wherein a first heat dissipation fan is provided therein; a piping system, which is laid in the first compartment corresponding to each battery module and includes a liquid supply end and a liquid return end extending into the second compartment, wherein the liquid supply end and the liquid return end are respectively connected to the liquid supply port and the liquid return port; a power conversion device, which is placed in the third compartment and is used to charge or discharge the energy storage device and wherein a second heat dissipation fan is provided therein; an output control device, which is placed in the fourth compartment and is used to output direct current and control the operation of the energy storage device, the power conversion device, and the refrigeration equipment; and a refrigeration equipment, which is placed in the fourth compartment and is used to dissipate heat from the output control device.

[0006] Based on Technical Solution 1, there is also a Technical Solution 2, which further includes a temperature sensor correspondingly placed in each battery module and connected to the output control device by signal, the temperature sensor being used to detect the temperature value of the corresponding battery module and send it to the output control device; the power conversion device includes a plurality of bidirectional DC-DC converters; the housing further forms a heat exchange channel suitable for opening and closing between the first compartment and the third compartment; when each battery module is in a charging mode, the output control device is suitable for controlling the heat exchange channel to be closed when the temperature in each battery module is higher than a first value, and the output control device is further suitable for controlling the heat exchange channel to be opened when the temperature in each battery module is lower than the first value so as to connect the first compartment and the third compartment until the temperature in each battery module is higher than the first value; when each battery module is in a discharging mode, the output control device is suitable for controlling the heat exchange channel to be closed when the temperature in each battery module is higher than a second value, and the output control device is further suitable for controlling the heat exchange channel to be opened when the temperature in each battery module is lower than the second value so as to connect the first compartment and the third compartment until the temperature in each battery module is higher than the second value.

[0007] Based on Technical Solution 2, Technical Solution 3 is also provided. In Technical Solution 3, the box body is provided with a first electric blind separating the first compartment and the third compartment, the heat exchange channel is formed on the first electric blind, and the output control device is suitable for controlling the first electric blind to open or close so that the heat exchange channel is opened or closed; the box body is provided with a first air inlet and a second electric blind facing the outside corresponding to the third compartment, and the second electric blind forms the first air outlet of the third compartment when the second electric blind is opened, and the second heat dissipation fan is suitable for driving the airflow from the first air inlet to the first air outlet; when each battery module is in charging mode, the output control device is also suitable for controlling the second electric blind to close when the temperature inside each battery module is lower than a first value until the temperature inside each battery module is higher than the first value; when each battery module is in discharging mode, the output control device is also suitable for controlling the second electric blind to close when the temperature inside each battery module is lower than a second value until the temperature inside each battery module is higher than the second value.

[0008] Based on technical solution three, technical solution four is also provided, which also includes a fire-fighting device and a fire detector placed in the first compartment and connected to the output control device signal; the box body is also provided with a fifth compartment that is connected to and adjacent to the first compartment, and the fifth compartment is suitable for communicating with the outside world; the box body is provided with a third electric blind facing the outside corresponding to the fifth compartment, and the fire-fighting device is placed in the fifth compartment; the output control device is used to control the operation of the fire-fighting device and is suitable for controlling the opening of the third electric blind to discharge gas when a fire occurs in the first compartment.

[0009] Based on technical solution four, technical solution five is also provided. In technical solution five, the first warehouse extends along the first direction, the second warehouse and the fourth warehouse are respectively located at the two ends of the first warehouse, the fifth warehouse is arranged on the same side as the fourth warehouse and is adjacent to it, and the third warehouse is also adjacent to the fifth warehouse.

[0010] Based on technical solution five, technical solution six is ​​also provided. In technical solution six, the fifth warehouse is adjacent to the fourth warehouse along the second direction; the third warehouse is arranged on the same side as the fourth warehouse and the fifth warehouse, and the projection of the third warehouse along the third direction covers the projection of the fourth warehouse and the fifth warehouse along the third direction; the first direction, the second direction and the third direction are orthogonal; the first electric blinds and the second electric blinds are arranged opposite to each other and are both perpendicular to the first direction, and the first air inlet is opened along the second direction.

[0011] Based on technical solution six, there is also a technical solution seven. In technical solution seven, the third direction is a vertical direction, the third bin is located above the fourth bin and the fifth bin, and the third electric blind is perpendicular to the first direction; the box body is provided with a first wall and a second wall opposite to each other along the second direction corresponding to the third bin, the first wall and the second wall are both perpendicular to the second direction, and the first air inlet is opened on the first wall and the second wall; the power conversion device includes two rows of power conversion groups arranged along the second direction, each power conversion group includes a number of bidirectional DC-DC converters arranged along the third direction, and the two rows of power conversion groups cooperate to form a first air duct; each bidirectional DC-DC converter is provided with at least one of the second heat dissipation fans, and the second heat dissipation fan is suitable for driving the airflow from the first air inlet to the first air duct and then out through the first electric blind or the second electric blind.

[0012] Based on Technical Solution Five, Technical Solution Eight is also provided. In Technical Solution Eight, the projection of the first warehouse along the first direction covers the projection of the fourth warehouse and the fifth warehouse along the first direction; the box body is provided with a third wall and a third wall parallel to and opposite to each other corresponding to the third warehouse, and the third wall and the fourth wall are both perpendicular to the second direction, and the first air inlet is opened on the third wall and the fourth wall; the third warehouse extends along the first direction, one end of which is adjacent to the second warehouse along the first direction, and the other end is connected to the fourth warehouse and the fifth warehouse along the third direction, and the projection of the third warehouse along the third direction covers the projection of the first warehouse, the third warehouse and the fifth warehouse along the third direction; the first direction, the second direction and the third direction are orthogonal to each other; the first electric blind is perpendicular to the third direction, and the second electric blind is perpendicular to the first direction and is located at the end of the third warehouse away from the second warehouse.

[0013] Based on technical solution eight, there is also a technical solution nine. In technical solution nine, the third direction is a vertical direction, the third bin is located above the first bin, the fourth bin and the fifth bin, the third electric blind is perpendicular to the first direction, and the box body is provided with an outward hollow structure corresponding to the second bin; the box body is also provided with a fourth electric blind, which is perpendicular to the first direction and is located at one end of the third bin close to the second bin; when each battery module is in charging mode, the output control device is also suitable for controlling the fourth electric blind to close when the temperature in each battery module is lower than the first value until the temperature in each battery module is higher than the first value; each battery module is in discharging mode In the embodiment of the present invention, the output control device is further adapted to control the fourth electric blind to close when the temperature in each battery module is lower than the second value until the temperature in each battery module is higher than the second value; the power conversion device includes two rows of power conversion groups arranged along the second direction, each power conversion group includes a plurality of bidirectional DC-DC converters arranged along the first direction, and the two rows of power conversion groups cooperate to form a second air duct; each bidirectional DC-DC converter is provided with at least one of the second heat dissipation fans, and the second heat dissipation fans are adapted to drive the airflow from the first air inlet to the second air duct and then flow out through the second electric blind and the fourth electric blind or through the first electric blind.

[0014] Based on technical solutions one to nine, there is also a technical solution ten. In technical solution ten, the output control device includes a power distribution unit, a convergence unit, a UPS unit, a control unit, a switch and an isolation transformer; the energy storage device includes a plurality of battery clusters arranged along a first direction, each battery cluster includes a plurality of battery modules arranged along a third direction, each battery module is provided with a liquid inlet and a liquid outlet and has the same cooling flow channel; the piping system includes a liquid supply pipe, a liquid return pipe and a shunt subsystem; one end of the liquid supply pipe forms the liquid supply end, and the other end forms the liquid return end. One end is connected to the shunt subsystem at the total shunt end; one end of the return liquid pipe forms the return liquid end, and the other end is connected to the shunt subsystem at the total liquid collection end; the shunt subsystem is used to connect the total shunt end with the liquid inlets of all battery modules and to connect the total liquid collection end with the liquid outlets of all battery modules; in the shunt subsystem, the liquid flow length of all battery modules is equal; the liquid flow length of the battery module is equal to the sum of the pipeline distance between the liquid supply end and the total shunt end of the battery module and the pipeline distance between the return liquid end and the total liquid collection end of the battery module.

[0015] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In technical solution 1, the present invention places the energy storage device in a closed first compartment, and dissipates heat to each battery module in the energy storage device through a piping system and a coolant circulation supply device. Liquid cooling has higher heat dissipation efficiency than air conditioning heat dissipation, and ensures the waterproof and dustproof effect of the energy storage device. In addition, if a malfunction of the energy storage device causes a fire, the closed first compartment can also suppress the spread of the fire and affect other devices; the coolant circulation supply device is placed in a second compartment connected to the outside world, and dissipates heat through the first heat dissipation fan therein. The first heat dissipation fan can drive the airflow to flow in the second compartment to dissipate heat to the heat-generating part in the coolant circulation supply device; the power conversion device is placed in a third compartment connected to the outside world, and dissipates heat through the second heat dissipation fan therein. The second heat dissipation fan can drive The wind flows through the third compartment to dissipate heat from the heat-generating part of the power conversion device; the output control device is placed in a closed fourth compartment and dissipates heat through refrigeration equipment, which can ensure the normal operation of the output control device; it can be seen that in this technical solution, various power devices with different heat dissipation requirements and protection requirements are placed in compartments with different configurations, which can reduce costs while meeting the heat dissipation requirements and protection requirements of each power equipment; among them, the third compartment is adjacent to the first compartment and the fourth compartment, which is conducive to the wiring of the power conversion device with the energy storage device and the output control device, and the second compartment is adjacent to the first compartment, which is conducive to the connection of the pipeline system with the coolant circulation supply device; it can be seen that by adopting this technical solution, the connection of each power equipment is convenient, and the cost is reduced, the heat dissipation requirements are met, and waterproof and dustproof are achieved.

[0017] 2. In the second technical solution, it is difficult to start the battery module at a low temperature. If the coolant is heated and then transferred to each battery module to heat the battery module, the battery module will generate heat after starting, and the coolant needs to be cooled quickly, which is costly and time-consuming. In this technical solution, since the power conversion device includes a bidirectional DC-DC converter, the bidirectional DC-DC converter is basically in a working state, that is, heat is always discharged. When each battery module is in a charging mode, when the temperature in each battery module is lower than a first value, the output control device controls the heat exchange channel to be opened, so that the heat of the power conversion device can be transferred to the first battery module through the heat exchange channel. The battery module is heated in one compartment. When the battery module is heated, the temperature inside the battery module rises. When the temperature of the battery module is higher than the first value, the output control device controls the heat exchange channel to close, and can also control the coolant circulation supply device to transport coolant to each battery module to cool each battery module. Similarly, when each battery module is in the discharge mode, the output control device can control the heat exchange channel to open when the temperature inside each battery module is lower than the second value, and control the heat exchange channel to close when the temperature inside each battery module is higher than the second value. It can be seen that this technical solution can make full use of the heat that needs to be discharged by the power conversion device to heat the battery module, which is not only low-cost but also simple in structure.

[0018] 3. In the third technical solution, when each battery module is in the charging mode and the temperature inside each battery module is higher than the first value, the first electric shutter is closed, the second electric shutter is opened to form the first air outlet, and the second heat dissipation fan drives the air flow from the first air inlet to the first air outlet, so that the third compartment is connected to the outside world and the heat-generating part in the power conversion device is dissipated; when the temperature inside each battery module is lower than the first value, the second electric shutter is closed, the first electric shutter is opened, and the second heat dissipation fan drives the air flow from the first air inlet to the first compartment through the heat exchange channel, so that the heat of the third compartment is discharged only from the heat exchange channel, that is, all the heat of the power conversion device is discharged to the first compartment. warehouse, so that the temperature in the first warehouse can rise quickly, reducing the time for starting the battery module; similarly, when each battery module is in the discharge mode, the output control module can close the first electric blinds and open the second electric blinds when the temperature in the battery module is higher than the second value, and the output control module can also open the first electric blinds and close the second electric blinds when the temperature of the battery module is lower than the second value; it can be seen that in the present technical solution, the first electric blinds and the second electric blinds are linked, when one is opened, the other is closed, which not only ensures that the heat of the power conversion device can be discharged in time, but also can realize the low-temperature start of the battery module by the heat dissipation of the power conversion device when necessary.

[0019] 4. In technical solution four, a fifth compartment and a fire-fighting device are placed in the fifth compartment. When the fire detector detects a fire in the first compartment, the output control device can control the fire-fighting device to extinguish the fire and control the opening of the third electric blinds. This can achieve both fire extinguishing and automatic gas discharge, which is more intelligent.

[0020] 5. In technical solution five, the structural setting of the box body is such that the closed first compartment separates the second compartment from the fourth compartment and the fifth compartment, thereby avoiding heat conduction between the second compartment and the fourth compartment and the fifth compartment, thereby affecting the heat dissipation efficiency; since the fire-fighting device basically does not generate heat, the adjacent setting of the closed fourth compartment and the fifth compartment where the fire-fighting device is placed will not affect the fourth compartment, thereby making the structure of the box body more compact; similarly, the third compartment is adjacent to the fourth compartment and the fifth compartment, and the heat between the three compartments will not affect each other, thereby making the structure of the box body more compact.

[0021] 6. In technical solution six, the structure of the box is more compact, and the third compartment is located at the end of the first compartment, so that even if a fire occurs in the energy storage device in the first compartment, it will not affect the power conversion equipment in the third compartment, and the overall loss is smaller and safer; wherein, the first air inlet is opened along the second direction, and the first electric blinds and the second electric blinds are perpendicular to the first direction, so that the two sides of the third compartment take in air along the second direction and exhaust air along the first direction, which has high heat dissipation efficiency and avoids adverse effects on other compartments when exhausting hot air.

[0022] 7. In Technical Solution 7, the third direction is vertical, the third compartment is located above the fourth and fifth compartments, and the third electric blind is perpendicular to the first direction. This prevents exhaust from the fifth compartment after the third electric blind is opened from flowing into the third compartment. If the third compartment were located below the fourth and fifth compartments, the hot air discharged from the third compartment would float upward, causing the external temperature of the fourth and fifth compartments to rise, thereby affecting the heat dissipation of the fourth and fifth compartments. Therefore, this arrangement also prevents the fourth and fifth compartments from being affected by the heat dissipation of the third compartment. The two rows of power conversion groups cooperate to form a first air duct, and the second heat dissipation fan directs the heat from the bidirectional DC-DC converter into the first air duct. The two hot air flows collide in the first air duct, allowing the airflow to be discharged from the first air duct to the heat exchange channel of the first electric blind or to the first air outlet formed by the second electric blind. This improves heat dissipation efficiency and facilitates low-temperature self-starting of the battery. Furthermore, this arrangement is simple, practical, compact, and ingenious.

[0023] 8. In technical solution eight, the box structure is compact and ingenious, and it is convenient for wiring the energy storage device and the power conversion equipment, with low wiring costs; the structural setting of the third compartment allows air to enter along the second direction on both sides, and the end away from the second compartment discharges air along the first direction or toward the first compartment along the third direction, with high heat dissipation efficiency.

[0024] 9. In technical solution nine, the arrangement of the second electric shutter and the fourth electric shutter allows the heat of the third compartment to be discharged outside the box at one end and into the second compartment at the other end, thereby avoiding heat accumulation in the second air duct. Since the second compartment is a hollow structure facing outward, the heat of the third compartment can be further discharged outward through the second compartment, and has little impact on the coolant supply device in the second compartment. The third compartment is located above the first, fourth and fifth compartments, and the third electric shutter is perpendicular to the first direction, thereby avoiding the third electric shutter of the fifth compartment from flowing into the third compartment when the exhaust gas is opened. If the third compartment is located below the first, fourth and fifth compartments, the third electric shutter is perpendicular to the first direction, thereby avoiding the third electric shutter of the fifth compartment from flowing into the third compartment when the exhaust gas is opened. The hot air exhausted from the third compartment rises, affecting the heat dissipation of the first, fourth, and fifth compartments. Therefore, this arrangement prevents the first, fourth, and fifth compartments from being affected by the heat dissipation of the third compartment. The two rows of power conversion groups cooperate to form a second air duct, and the second cooling fan directs the heat from the bidirectional DC-DC converter into the second duct. The two hot air streams collide within the second duct, allowing the airflow to flow from the second duct toward the heat exchange channel of the first electric blind, or toward the first air outlet formed when the second electric blind is open, or toward the air outlet formed when the fourth electric blind is open. This achieves high heat dissipation efficiency and facilitates low-temperature self-starting of the battery. Furthermore, this arrangement is simple, practical, compact, and ingenious.

[0025] 10. In Technical Solution 10, the output control device includes a power distribution unit, a confluence unit, a UPS unit, a control unit, a switch, and an isolation transformer. It can be seen that the output control device is the communication input and output terminal and the power input and output terminal of the entire energy storage container, which is easy to operate. In addition, these devices are uniformly placed in the fourth compartment for easy wiring. Since each battery module has the same cooling flow channel, each battery module shares the same liquid supply pipe and the same liquid return pipe. In the diversion subsystem, the liquid flow length of all battery modules is equal. In other words, the liquid flow from the liquid supply port has a basically consistent path length regardless of which battery module it flows through before flowing to the liquid return port. In actual applications, it is only necessary to set the pipe sizes to be consistent, and the liquid flow rate in the cooling flow channel of each battery module is basically consistent. In other words, the liquid flow rate in the cooling flow channel of each battery module is relatively balanced, thereby making the temperature difference of each battery module relatively balanced, extending the service life of the battery module and reducing system costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is an overall schematic diagram of Example 1 of the present invention Figure 1 ;

[0028] Figure 2 This is an overall schematic diagram of Example 1 of the present invention Figure 2 ;

[0029] Figure 3 for Figure 1 Schematic diagram of the left side of the hidden box;

[0030] Figure 4 for Figure 1 Schematic diagram of the hidden front side wall of the box;

[0031] Figure 5 for Figure 1 Schematic diagram of the hidden box top wall;

[0032] Figure 6 This is a partial schematic diagram of Example 1 of the present invention Figure 1 ;

[0033] Figure 7 This is a partial schematic diagram of Example 1 of the present invention Figure 2 ;

[0034] Figure 8 Schematic diagram of the coolant circulation supply device, piping system and energy storage device of Example 1 of the present invention;

[0035] Figure 9 Schematic diagram of a coolant circulation supply device and a piping system according to Example 1 of the present invention;

[0036] Figure 10 This is an overall schematic diagram of Example 2 of the present invention;

[0037] Figure 11 for Figure 10 Schematic diagram of the hidden box front wall;

[0038] Figure 12 for Figure 10 Schematic diagram of the left wall of the hidden box;

[0039] Figure 13 for Figure 10 Schematic diagram of the hidden box top wall.

[0040] Description of main reference numerals:

[0041] Box 10;

[0042] First Warehouse 11;

[0043] Second warehouse 12;

[0044] The third compartment 13; the first electric shutter 131 (131"); the heat exchange channel 1311 (1311"); the second electric shutter 132; the first air outlet 1321; the first air inlet 133; the fourth electric shutter 134;

[0045] Fourth compartment 14; fifth compartment 15; third electric shutter 151;

[0046] First partition 161; second partition 162; third partition 163; fourth partition 171; fifth partition 172; sixth partition 173; seventh partition 178;

[0047] Energy storage device 20; battery module 21;

[0048] Cooling liquid circulation supply device 30; first cooling fan 31; liquid supply port 32; liquid return port 33;

[0049] Pipeline system 40; liquid supply pipe 41; liquid return pipe 42; total diversion end 01; total liquid collection end 02; first pipeline 43; liquid distribution pipe 431; liquid distribution branch pipe 432; liquid inlet pipe 433; second pipeline 44; liquid collection pipe 441; liquid collection branch pipe 442; liquid outlet pipe 443;

[0050] Power conversion device 50; bidirectional DC-DC converter 51; air outlet 511; second heat dissipation fan 52; first air duct 03; second air duct 04;

[0051] Output control device 60;

[0052] Refrigeration equipment 70;

[0053] Firefighting equipment 80. DETAILED DESCRIPTION

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0055] In the claims, description and drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for the purpose of distinguishing different objects rather than for describing a specific order.

[0056] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0057] In the claims, description and above-mentioned drawings of the present invention, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0058] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0059] Example 1

[0060] See also Figure 1-9 , Figure 1-9An energy storage container is shown, including a box body 10, an energy storage device 20, a coolant circulation supply device 30, a piping system 40, a power conversion device 50, an output control device 60, a refrigeration device 70, a fire-fighting device 80, a temperature sensor (not shown in the figure) and a fire detector (not shown in the figure).

[0061] A first warehouse 11, a second warehouse 12, a third warehouse 13, a fourth warehouse 14 and a fifth warehouse 15 are provided in the box body 10. The second warehouse 12 and the third warehouse 13 are adjacent to the first warehouse 11, the third warehouse 13 and the fourth warehouse 14 are adjacent, and the fifth warehouse 15 is adjacent to and connected with the first warehouse 11. Closed chambers are formed in the first warehouse 11 and the fourth warehouse 14, the second warehouse 12 and the third warehouse 13 are connected to the outside world, and the fifth warehouse 15 is suitable for connecting with the outside world.

[0062] In this embodiment, the first bin 11 extends along the first direction, the second bin 12 and the fourth bin 14 are respectively located at two ends of the first bin 11 , the fifth bin 15 is arranged on the same side as and adjacent to the fourth bin 14 , and the third bin 13 is also adjacent to the fifth bin 15 .

[0063] Specific to Figure 1 In the embodiment, the fifth compartment 15 is adjacent to the fourth compartment 14 along the second direction; the third compartment 13 is located on the same side as the fourth compartment 14 and the fifth compartment 15, and the projection of the third compartment 13 along the third direction overlaps the projections of the fourth compartment 14 and the fifth compartment 15 along the third direction. The first direction is the left-right direction, the second direction is the front-back direction, and the third direction is the vertical direction. The third compartment 13 is located above the fourth compartment 14 and the fifth compartment 15. In this embodiment, the tops of the third compartment 13, the first compartment 11, and the second compartment 12 are flush, and the bottoms of the fourth compartment 14, the fifth compartment 15, and the second compartment 12 are flush.

[0064] In a specific implementation, the box body 10 is in the shape of a cuboid, with its length direction being the first direction, its width direction being the second direction, and its height direction being the third direction. Figure 3-5 Two first partitions 161 are arranged perpendicularly along a first direction within the box 10. The first partitions 161 extend from the front wall to the rear wall of the box 10. The two first partitions 161 divide the box 10 from left to right into three compartments. The center compartment forms the first compartment 11, and the right compartment forms the second compartment 12. A second partition 162, perpendicular to a third direction, is arranged within the left compartment. The second partition 162 divides the left compartment into an upper left compartment and a lower left compartment. The upper left compartment forms the third compartment 13. A third partition 163, perpendicular to the second direction, is arranged within the lower left compartment. The third partition 163 divides the lower left compartment into a front compartment and a rear compartment. The front compartment forms the fourth compartment 14, and the rear compartment forms the fifth compartment 15. The fifth compartment 15 can be connected to the first compartment 11 by providing a through hole in the first partition 161.

[0065] Among them, see Figure 3 The box body 10 further forms a heat exchange channel 1311 suitable for opening and closing between the first compartment 11 and the third compartment 13. In this embodiment, the box body 10 is provided with a first electric shutter 131 separating the first compartment 11 and the third compartment 13. The heat exchange channel 1311 is formed on the first electric shutter 131. Figure 5 The first electric blind 131 is provided on the first partition 161. When the first electric blind 131 is opened, the first compartment 11 and the third compartment 13 are connected. The housing 10 is further provided with a first air inlet 133 and a second electric blind 132 facing outwards, corresponding to the third compartment 13. When the second electric blind 132 is opened, a first air outlet 1321 of the third compartment 13 is formed. In this embodiment, the first electric blind 131 and the second electric blind 132 are arranged opposite to each other and perpendicular to the first direction. The housing 10 is provided with a first wall and a second wall (not shown) opposite to each other along the second direction corresponding to the third compartment 13. The first wall and the second wall are both perpendicular to the second direction. The first air inlet 133 is opened on the first wall and the second wall along the second direction. Figure 1-2 and Figure 5 In the embodiment, the first wall and the second wall are respectively the front wall and the rear wall of the box body 10 , the first electric shutter 131 is located on the right side of the third compartment 13 , and the second electric shutter 132 is located on the left side of the third compartment 13 .

[0066] The box body 10 is provided with a third electric shutter 151 facing outwards corresponding to the fifth compartment 15. The third electric shutter 151 is perpendicular to the first direction. Figure 1 In the embodiment, the third electric shutter 151 is located on the left side of the fifth compartment 15 .

[0067] See also Figure 2 The box body 10 is provided with a hollow structure facing outwards corresponding to the second compartment 12, wherein the front and rear sides and the right side (left and right direction) of the second compartment 12 are Figure 1 Reference) can be ventilated.

[0068] In this embodiment, the energy storage device 20 is placed in the first compartment 11 and includes a plurality of battery modules 21. The coolant circulation supply device 30 is placed in the second compartment 12 and is provided with a liquid supply port 32 and a liquid return port 33. The piping system 40 is laid in the first compartment 11 corresponding to each battery module 21 and is provided with a liquid supply end and a liquid return end extending into the second compartment 12. The liquid supply end and the liquid return end are respectively connected to the liquid supply port 32 and the liquid return port 33; the power conversion device 50 is placed in the third compartment 13 and is used to charge or discharge the energy storage device 20; the output control device 60 is placed in the fourth compartment 14 and is used to output direct current and control the operation of the energy storage device 20, the power conversion device 50 and the refrigeration equipment 70. The output control device 60 is also suitable for controlling the opening and closing of the first electric blinds 131, the second electric blinds 132 and the third electric blinds 151; the refrigeration equipment 70 is placed in the fourth compartment 14 and is used to dissipate heat from the output control device 60; and the fire-fighting device 80 is placed in the fifth compartment 15. The temperature sensor is placed in each battery module 21 and is connected to the output control device 60 signal. The temperature sensor is used to detect the temperature value of the corresponding battery module 21 and send it to the output control device 60; the fire detectors are all placed in the first compartment 11 and are connected to the output control device 60 signal.

[0069] The structural arrangement of the above-mentioned housing 10 enables the enclosed first compartment 11 to separate the second compartment 12 from the fourth compartment 14 and the fifth compartment 15, thereby preventing heat conduction between the second compartment 12 and the fourth compartment 14 and the fifth compartment 15, which would affect the heat dissipation efficiency. Since the fire-fighting device 80 generates little heat, the adjacent arrangement of the enclosed fourth compartment 14 and the fifth compartment 15 in which the fire-fighting device 80 is placed will not affect the fourth compartment 14, thereby making the structure of the housing 10 more compact. Similarly, the third compartment 13 is adjacent to the fourth compartment 14 and the fifth compartment 15, and the heat between the three compartments does not affect each other, thereby making the structure of the housing 10 more compact. The third compartment 13 is located at the end of the first compartment 11, so that even if a fire occurs in the energy storage device 20 in the first compartment 11, it will not affect the power conversion equipment in the third compartment 13, resulting in less overall loss and greater safety. The third compartment 13 is located above the fourth compartment 14 and the fifth compartment 15, and the third electric shutter 151 is perpendicular to the first direction, which prevents the gas exhausted after the third electric shutter 151 of the fifth compartment 15 is opened from flowing into the third compartment 13. If the third compartment 13 is located below the fourth compartment 14 and the fifth compartment 15, the hot gas exhausted from the third compartment 13 will float upward, causing the external temperature of the fourth compartment 14 and the fifth compartment 15 to rise, thereby affecting the heat dissipation of the fourth compartment 14 and the fifth compartment 15. Therefore, the above arrangement can also prevent the fourth compartment 14 and the fifth compartment 15 from being affected by the heat dissipation of the third compartment 13.

[0070] Specifically, see Figure 4 and Figure 8The energy storage device 20 includes a plurality of battery clusters arranged along a first direction. Each battery cluster includes a plurality of battery modules 21 arranged along a third direction. Each battery module 21 is provided with a liquid inlet and a liquid outlet and has the same cooling channel. Each battery module 21 extends in a front-to-back direction, and the liquid inlet and liquid outlet of its cooling channel are located at the front or rear end of the battery module 21. Figure 8-9 The cooling channel's liquid inlet and outlet are located in the center of the battery module 21. Specifically, the battery module 21 is composed of multiple battery cells connected in series. A temperature sensor is placed within each cell, detecting the temperature of each cell and transmitting it to the output control device 60. Multiple fire detectors, which can be a combination of smoke and temperature detectors, are also located within the first compartment 11 and are signal-connected to the output control device 60.

[0071] See also Figure 5 and Figure 8 , each battery module 21 is arranged along two directions to form two rows of heating groups, each row of heating groups is formed by multiple heating clusters arranged along the first direction, and each heating cluster is formed by multiple battery modules 21 arranged along the vertical direction; the liquid inlet and liquid outlet of the battery modules 21 in each row of heating groups are separated from the liquid inlet and liquid outlet of the battery modules 21 in the other row of heating groups. In actual applications, each battery module 21 can be installed in a rack or cabinet, and a plurality of installation channels are arranged on the rack or cabinet along the third direction, and the battery modules 21 are correspondingly installed in the installation channels. The piping system 40 is laid on the rack or cabinet. In this embodiment, the battery module 21 is a battery module 21 with a liquid cooling plate.

[0072] See also Figure 5 The box body 10 is provided with multiple movable doors corresponding to the first compartment 11. The number of movable doors corresponds to the number of battery clusters. In this embodiment, the number of battery clusters is 10. The front side of the box body 10 is provided with 5 movable doors, and the rear side is provided with 5 movable doors. Each movable door corresponds to a battery cluster to facilitate maintenance of each battery module 21.

[0073] The cooling liquid circulation supply device 30 is generally provided with a driving device such as a circulation pump to drive the cooling liquid to flow, and is also provided with a heat exchanger to cool the cooling liquid. This part belongs to the prior art and will not be described in detail in this embodiment. In this embodiment, see Figure 6 The cooling liquid circulation supply device 30 is provided with a first cooling fan 31, which is located at the upper part of the second chamber 12. The first cooling fan 31 rotates around an axis extending in the first direction and is suitable for driving airflow from the hollow structure below the second chamber 12 into the second chamber 12 and discharged from the upper part of the second chamber 12. In this embodiment, the right side of the box body 10 (left and right direction) Figure 1 Reference) is provided with a movable door that can open the second compartment 12, and a hollow structure is also formed on the movable door.

[0074] See also Figure 9 The piping system 40 includes a liquid supply pipe 41, a liquid return pipe 42 and a diversion subsystem; one end of the liquid supply pipe 41 extends into the second compartment 12 to connect with the liquid supply port 32 and form a liquid supply end, and the other end connects to the diversion subsystem at the total diversion end 01; one end of the liquid return pipe 42 extends into the second compartment 12 to connect with the liquid return port 33 and form a liquid return end, and the other end connects to the diversion subsystem at the total liquid collection end 02; the liquid supply pipe 41 and the diversion subsystem are used to connect the total diversion end 01 with the liquid inlets of all battery modules 21 and to connect the total liquid collection end 02 with the liquid outlets of all battery modules 21; in the diversion subsystem, the liquid flow length of all battery modules 21 is equal; the liquid flow length of a battery module 21 is equal to the liquid inlet of the battery module 21

[0075] The sum of the pipeline distance between the battery module 21 and the total branch end 01 and the pipeline distance between the liquid outlet of the battery module 21 and the total liquid collection end 02.

[0076] In a specific implementation, the total shunt end 01 is located on a first plane, the total liquid collection end 02 is located on a second plane parallel to the first plane, and each battery module 21 is located between the first plane and the second plane; the shunt subsystem includes a first pipe 43 connecting the liquid inlet of all battery modules 21 with the total shunt end 01 and a second pipe 44 connecting the liquid outlet of all battery modules 21 with the total liquid collection end 02; the first pipe 43 is composed only of a liquid separation pipe 431 located on the first plane, a liquid separation branch pipe 432 extending in a third direction perpendicular to the first plane, and a liquid inlet pipe 433, wherein the liquid separation pipe 431 is connected to the total diversion end 01; each liquid branch pipe 432 is connected in parallel to the liquid branch pipe 431, each liquid inlet pipe 433 is connected in parallel to the liquid branch pipe 432, and the liquid inlet pipe 433 is arranged corresponding to the liquid inlet of the battery module 21; the second pipeline 44 is composed only of a liquid collecting pipe 441 located on the second plane, a liquid collecting branch pipe 442 extending along the third direction, and a liquid outlet pipe 443, wherein the liquid collecting pipe 441 is connected to the total liquid collecting end 02, each liquid collecting branch pipe 442 is connected in parallel to the liquid collecting pipe 441, each liquid outlet pipe 443 is connected in parallel to the liquid outlet branch pipe, and the liquid outlet pipe 443 is arranged corresponding to the liquid outlet of the battery module 21.

[0077] In this embodiment, the second plane is parallel to the first plane and is above the first plane.

[0078] It should be understood that in actual applications, the specifications and quantities of elbows, tees, valves, etc. in the pipeline system 40 are consistent, and the sizes of the pipelines are consistent.

[0079] Since each battery module 21 has the same cooling flow channel, each battery module 21 shares the same liquid supply pipe 41 and the same liquid return pipe 42. In the shunt subsystem, the liquid flow length of all battery modules 21 is equal, that is, the liquid flow flowing out of the liquid supply port 32 flows through whichever battery module 21 and then flows to the liquid return port 33. The path length is basically the same. In practical applications, it is only necessary to set the size of each pipe to be consistent, and the flow rate of the liquid flow in the cooling flow channel of each battery module 21 is basically the same, that is, the flow rate of the liquid flow in the cooling flow channel of each battery module 21 is relatively uniform. Balanced, so that the temperature difference of each battery module 21 is more balanced, the service life of the battery module 21 is extended, and the system cost is reduced; the structural setting of the first pipeline 43 and the second pipeline 44 is simple and easy to implement, which is convenient for laying the pipeline system 40 and setting up the battery module 21, wherein the liquid distribution branch pipe 432 extends along the third direction, the liquid collection branch pipe 442 extends along the third direction, the liquid distribution pipe 431 is located in the first plane, and the liquid collection pipe 441 is located in the second plane. The layout is reasonable, simple and beautiful, and is conducive to achieving equal liquid flow length of each battery module 21.

[0080] See also Figure 3-5 and Figure 7 The power conversion device 50 includes two rows of power conversion groups arranged along the second direction, each power conversion group includes a plurality of bidirectional DC-DC converters 51 arranged along the third direction, and a first air duct 03 is formed between the two rows of power conversion groups. Each bidirectional DC-DC converter 51 is provided with at least one second heat dissipation fan 52, and the second heat dissipation fan 52 is arranged near the first air inlet 133. The bidirectional DC-DC converter 51 is box-shaped as a whole and extends in the front-to-back direction. The second heat dissipation fan 52 is arranged at the front or rear end of the DC-DC converter. An air outlet 511 is provided at one end of the DC-DC converter facing away from the second heat dissipation fan 52. A first air duct 03 is formed between the air outlets 511 of the two power converter groups. The axis of the second heat dissipation fan 52 extends along the second direction. Each second heat dissipation fan 52 is arranged along the first direction. The second heat dissipation fan 52 is suitable for driving airflow from the first air inlet 133 to flow into the first air duct 03 and then out through the first electric blind 131 or the second electric blind 132. Two rows of power conversion groups cooperate to form a first air duct 03. The second heat dissipation fan 52 directs the heat from the bidirectional DC-DC converter 51 into the first air duct 03. The two hot air flows collide within the first air duct 03, effectively discharging the air from the first air duct 03 toward the heat exchange channel 1311 of the first electric blind 131 or toward the first air outlet 1321 formed by the second electric blind 132. This improves heat dissipation efficiency and facilitates low-temperature self-starting of the battery. Furthermore, this configuration is simple, practical, compact, and ingenious.

[0081] Because the first air inlet 133 is oriented along the second direction, and the first and second electric shutters 131 and 132 are perpendicular to the first direction, air enters both sides of the third compartment 13 in the second direction and is exhausted in the first direction. This improves heat dissipation efficiency of the power conversion device and prevents adverse effects of exhaust heat on other compartments. In this embodiment, a movable door for opening the third compartment 13 can be provided on the left side of the housing 10.

[0082] The output control device 60 includes a power distribution unit, a bus unit, a UPS unit, a control unit, a switch, and an isolation transformer. The bus unit outputs direct current (DC), while the control unit serves as the controller for the entire energy storage container. It controls the operation of the energy storage device 20, the power conversion device 50, the refrigeration equipment 70, and the firefighting device 80, as well as the opening and closing of the first, second, and third electric blinds 131, 132, and 151. The control unit controls the opening and closing of the first and second electric blinds 131, 132 based on signals from the temperature sensor. It also determines whether a fire has occurred in the first compartment 11 based on signals from the fire detector and controls the opening and closing of the third electric blind 151 accordingly. As can be seen, the output control device 60 serves as the communication and power input / output terminals for the entire energy storage container, facilitating operation. These devices are conveniently located within the fourth compartment 14 for easy wiring. In this embodiment, a movable door that opens the fourth compartment 14 can be provided on the left side of the container body 10.

[0083] In this embodiment, the refrigeration equipment 70 is a refrigeration air conditioner. The fire-fighting device 80 is a gas cylinder filled with heptafluoropropane.

[0084] It is difficult to start the battery module at low temperatures. If the coolant is heated and then transferred to each battery module 21 to heat the battery module 21, the battery module 21 will generate heat after startup, and the coolant needs to be cooled quickly, which is costly and time-consuming. In this embodiment, since the power conversion device 50 includes a bidirectional DC-DC converter 51, the bidirectional DC-DC converter 51 is basically in a working state, that is, heat is always discharged. The setting of the heat exchange channel 1311 can solve this dilemma.

[0085] Specifically, when each battery module 21 is in the charging mode, the output control device 60 is suitable for controlling the heat exchange channel 1311 to close when the temperature in each battery module 21 is higher than the first value, and the output control device 60 is also suitable for controlling the heat exchange channel 1311 to open when the temperature in each battery module 21 is lower than the first value so that the first compartment 11 and the third compartment 13 are connected until the temperature in each battery module 21 is higher than the first value; in actual application, when the temperature in each battery module 21 is lower than the first value, the output control device 60 controls the first electric blinds 131 to open and the second electric blinds 132 to close until the temperature in each battery module 21 is higher than the first value; when the temperature in each battery module 21 is higher than the first value, the output control device 60 controls the second electric blinds 132 to close and the second electric blinds 132 to open until the temperature in each battery module 21 is higher than the first value. Lower than the first value; in the specific implementation, the first value is 0°C, that is, when the temperature of each battery cell is lower than 0°C, the first electric shutter 131 is opened, the second electric shutter 132 is closed, and the second cooling fan 52 drives the airflow from the first air inlet 133 through the heat exchange channel 1311 to the first warehouse 11, so that the heat of the third warehouse 13 is only discharged from the heat exchange channel 1311, that is, the heat of the power conversion device is all discharged to the first warehouse 11, so that the temperature in the first warehouse 11 can rise rapidly, reducing the startup time of the battery module 21; when the battery module 21 heats up, the temperature in the battery module 21 rises, and the temperature of each battery cell is higher than 0°C, the first electric shutter 131 is closed, and the second electric shutter 132 is opened. The control unit can also control the coolant circulation supply device 30 to transport coolant to each battery module 21 to cool down each battery module 21.

[0086] When each battery module 21 is in the discharge mode, the output control device 60 is suitable for controlling the heat exchange channel 1311 to close when the temperature inside each battery module 21 is higher than the second value. The output control device 60 is also suitable for controlling the heat exchange channel 1311 to open when the temperature inside each battery module 21 is lower than the second value so as to connect the first compartment 11 and the third compartment 13 until the temperature inside each battery module 21 is higher than the second value. In actual application, the output control device 60 controls the first electric blinds 131 to open and the second electric blinds 132 to close when the temperature inside each battery module 21 is lower than the second value until the temperature inside each battery module 21 is higher than the second value. The output control device 60 controls the first electric blinds 131 to close and the second electric blinds 132 to open when the temperature inside each battery module 21 is higher than the second value until the temperature inside each battery module 21 is lower than the second value. In a specific implementation, the first value is 25°C, that is, when the temperature of each battery cell is lower than 25°C, the first electric shutter 131 is opened and the second electric shutter 132 is closed, and the second cooling fan 52 drives the airflow from the first air inlet 133 through the heat exchange channel 1311 to the first compartment 11, so that the heat of the third compartment 13 is only discharged from the heat exchange channel 1311, that is, the heat of the power conversion device is all discharged to the first compartment 11, so that the temperature in the first compartment 11 can rise rapidly, reducing the startup time of the battery module 21; when the temperature of each battery cell is higher than 25°C, the first electric shutter 131 is closed and the second electric shutter 132 is opened, and the control unit can also control the coolant circulation supply device 30 to supply coolant to each battery module 21 to cool each battery module 21.

[0087] As can be seen, this arrangement fully utilizes the heat required to be dissipated by the power conversion device 50 to heat the battery module 21, resulting in low cost and simple structure. The first electric shutter 131 and the second electric shutter 132 are linked, with one opening while the other closes. This ensures that heat from the power conversion device 50 is dissipated promptly and allows the battery module 21 to start at a low temperature when necessary by dissipating heat from the power conversion device 50.

[0088] When the fire detector detects a fire in the first compartment 11, the output control device 60 controls the third electric shutter 151 to open and exhaust gas. The output control device 60 can also control the third electric shutter 151 to close after the gas has been exhausted. The output control device 60 can control the fire-fighting device 80 to extinguish the fire and control the opening of the third electric shutter 151, achieving both fire extinguishing and automatic gas exhaust, creating a more intelligent system. In this embodiment, a movable door for opening the fifth compartment 15 can be provided on the left side of the housing 10, and the third electric shutter 151 is correspondingly located on this movable door.

[0089] In this embodiment, the energy storage device 20 is placed in a closed first compartment 11, and the heat is dissipated from each battery module 21 in the energy storage device 20 through a pipe system 40 and a coolant circulation supply device 30. Liquid cooling has a higher heat dissipation efficiency than air conditioning heat dissipation, and the pipe system 40 of this embodiment makes the temperature difference of each battery module 21 more balanced, and ensures the waterproof and dustproof effect of the energy storage device 20. In addition, if a malfunction of the energy storage device 20 causes a fire, the closed first compartment 11 can also suppress the spread of the fire and affect other devices, especially the power conversion device 50; the coolant circulation supply device 30 is placed in a second compartment 12 connected to the outside world, and dissipates heat by the first heat dissipation fan 31 therein. The first heat dissipation fan 31 can drive the airflow to flow in the second compartment 12 to dissipate heat for the heat-generating parts in the coolant circulation supply device 30; the power conversion device 50 is placed in a third compartment 13 connected to the outside world, and dissipates heat by the second heat dissipation fan 52 therein. The fan 52 can drive the air flow through the third compartment 13 to dissipate the heat of the heat-generating part of the power conversion device 50; the output control device 60 is placed in the closed fourth compartment 14 and dissipates heat through the refrigeration equipment 70, which can ensure the normal operation of the output control device 60; the fire-fighting device 80 is placed in the fifth compartment 15, and can extinguish the fire in the first compartment 11 when necessary; it can be seen that in this technical solution, various power devices with different heat dissipation requirements and protection requirements are placed in compartments with different configurations, which can reduce costs while meeting the heat dissipation requirements and protection requirements of each power equipment; among them, the third compartment 13 is adjacent to the first compartment 11 and the fourth compartment 14, which is conducive to the connection between the power conversion device 50 and the energy storage device 20 and the output control device 60, and the second compartment 12 is adjacent to the first compartment 11, which is conducive to the connection between the pipeline system 40 and the coolant circulation supply device 30; it can be seen that by adopting this technical solution, the connection of each power equipment is convenient, and the cost is reduced, the heat dissipation requirements are met, and waterproof and dustproof are achieved.

[0090] Example 2

[0091] See also Figure 10-13 The structure of Example 2 is basically the same as that of Example 1, except that the structure of the box body 10 is different.

[0092] Specifically, the first warehouse 11 extends along the first direction, the second warehouse 12 and the fourth warehouse 14 are located at both ends of the first warehouse 11 respectively, the fifth warehouse 15 is arranged on the same side as and adjacent to the fourth warehouse 14, and the third warehouse 13 is also adjacent to the fifth warehouse 15; the projection of the first warehouse 11 along the first direction covers the projections of the fourth warehouse 14 and the fifth warehouse 15 along the first direction; the third warehouse 13 extends along the first direction, one end of which is adjacent to the second warehouse 12 along the first direction, and the other end is connected to the fourth warehouse 14 and the fifth warehouse 15 along the third direction, and the projection of the third warehouse 13 along the third direction covers the projections of the first warehouse 11, the third warehouse 13 and the fifth warehouse 15 along the third direction. Figure 10In the embodiment, the third compartment 13 is located above the first compartment 11, the fourth compartment 14, and the fifth compartment 15. The tops of the third compartment 13 and the second compartment 12 are flush, the tops of the fourth compartment 14 and the fifth compartment 15 are flush, and the bottoms of the fifth compartment 15, the first compartment 11, and the second compartment 12 are flush.

[0093] The box body 10 is in the shape of a cuboid, with its length direction being the first direction, its width direction being the second direction, and its height direction being the third direction. Figure 11-13 A fourth partition 171, perpendicular to the first direction, is provided within the box body 10. The fourth partition 171 divides the box body 10 into a left space and a right space. The right space forms the second compartment 12. A fifth partition 172, perpendicular to the third direction, is provided within the left space. The fifth partition 172 divides the left space into an upper space and a lower space. The upper space forms the third compartment 13. A sixth partition 173, perpendicular to the first direction, is provided within the lower space. The sixth partition 173 divides the lower space into a lower left space and a lower right space. The lower right space forms the first compartment 11. An L-shaped seventh partition 178 is provided within the lower left space. The seventh partition 178 divides the lower left space into a front space and a rear space. The front space forms the fourth compartment 14, and the rear space forms the fifth compartment 15. A through hole can be provided in the sixth partition 173 to connect the fifth compartment 15 to the first compartment 11.

[0094] The structure of the second compartment 12 in this embodiment is substantially the same as that in the previous embodiment and will not be described again here.

[0095] Figure 10 In the embodiment, the box body 10 is provided with a third wall and a third wall (the front wall and the rear wall of the box body 10) parallel to and opposite to each other corresponding to the third compartment 13, the third wall and the fourth wall are both perpendicular to the second direction, and the first air inlet 133 is opened on the third wall and the fourth wall; the box body 10 is provided with a first electric blind 131", a second electric blind 132 and a fourth electric blind 134 corresponding to the third compartment 13, the first electric blind 131" is perpendicular to the third direction and formed on the fifth partition 172, the second electric blind 132 is perpendicular to the first direction and is located at an end of the third compartment 13 away from the second compartment 12, and the fourth electric blind 134 is perpendicular to the first direction and is located at an end of the third compartment 13 close to the second compartment 12. Figure 10-11 In the embodiment, the second electric shutter 132 is formed on the left side wall of the box body 10 , and the fourth electric shutter 134 is arranged above the fourth partition plate 171 .

[0096] Similarly, the box body 10 is provided with a third electric shutter 151 facing outwards corresponding to the fifth compartment 15 . The third electric shutter 151 is perpendicular to the first direction and is located on the left side wall of the box body 10 .

[0097] It can be seen that the box body 10 has a compact and ingenious structure, and is convenient for wiring the energy storage device 20 and the power conversion equipment, with low wiring costs; the third compartment 13 is located above the first compartment 11, the fourth compartment 14 and the fifth compartment 15, and the third electric shutter 151 is perpendicular to the first direction, which prevents the third electric shutter 151 of the fifth compartment 15 from being opened and exhausting gas into the third compartment 13. If the third compartment 13 is located below the first compartment 11, the fourth compartment 14 and the fifth compartment 15, the hot air discharged from the third compartment 13 will float up, thereby affecting the heat dissipation of the first compartment 11, the fourth compartment 14 and the fifth compartment 15. Therefore, the above setting can also prevent the first compartment 11, the fourth compartment 14 and the fifth compartment 15 from being affected by the heat dissipation of the third compartment 13.

[0098] See also Figure 11-13 The power conversion device 50 includes two rows of power conversion groups arranged along the second direction. Each power conversion group includes a plurality of bidirectional DC-DC converters 51 arranged along the first direction. The two rows of power conversion groups cooperate to form a second air duct 04. Each bidirectional DC-DC converter 51 is provided with at least one second heat dissipation fan 52. The second heat dissipation fan 52 faces the first air inlet 133. The axis of the second heat dissipation fan 52 extends along the second direction. Each second heat dissipation fan 52 is arranged along the first direction. The second heat dissipation fan 52 is suitable for driving the airflow from the first air inlet 133 to flow to the second air duct 04 so as to pass through the first electric blind 131 or the second electric blind. The heat flows out of the louvers 132 and the fourth electric louver 134. The two rows of power conversion groups cooperate to form the second air duct 04. The second heat dissipation fan 52 concentrates the heat from the bidirectional DC-DC converter 51 into the second air duct 04. The two hot air flows collide within the second air duct 04, allowing the air to flow from the second air duct 04 toward the heat exchange channel 1311" of the first electric louver 131", or toward the first air outlet 1321 formed when the second electric louver 132 is open, and toward the air outlet formed when the fourth electric louver 134 is open. This improves heat dissipation efficiency and facilitates low-temperature self-starting of the battery. Furthermore, this configuration is simple, practical, compact, and ingenious.

[0099] The structure of the third compartment 13 is set so that air enters its two sides along the second direction. The arrangement of the second electric shutter 132 and the fourth electric shutter 134 allows the heat of the third compartment 13 to be discharged to the outside of the box body 10 at one end and to the inside of the second compartment 12 at the other end, thereby avoiding the accumulation of heat in the second air duct 04. Since the second compartment 12 is a hollow structure facing outward, the heat of the third compartment 13 can be further discharged outward through the second compartment 12, and has little impact on the coolant supply device in the second compartment 12.

[0100] Battery modules have difficulty starting at low temperatures. If the coolant is heated and then transferred to each battery module 21 to heat the battery modules 21, the battery modules 21 will generate heat after startup, and the coolant must be quickly cooled, which is costly and time-consuming. In this embodiment, the provision of the heat exchange channel 1311" can solve this problem.

[0101] Specifically, when each battery module 21 is in the charging mode, in actual application, the output control device 60 controls the first electric blind 131" to open and the second electric blind 132 and the fourth electric blind 134 to close when the temperature inside each battery module 21 is lower than the first value until the temperature of each battery module 21 is higher than the first value; the output control device 60 controls the second electric blind 132 and the fourth electric blind 134 to open and the first electric blind 131" to close when the temperature inside each battery module 21 is higher than the first value until the temperature of each battery module 21 is lower than the first value; in a specific implementation, the first value is 0°C, that is, when the temperature of each battery cell is lower than 0°C, the first electric blind 131" is opened, and the second electric blind 132 and the fourth electric blind 134 are closed; when the temperature of each battery cell is higher than 0°C, the first electric blind 131" is closed, and the second electric blind 132 and the fourth electric blind 134 are opened.

[0102] When each battery module 21 is in the discharge mode, the output control device 60 controls the first electric blind 131" to open and the second electric blind 132 and the fourth electric blind 134 to close when the temperature in each battery module 21 is lower than the second value until the temperature in each battery module 21 is higher than the second value; the output control device 60 controls the second electric blind 132 and the fourth electric blind 134 to open and the first electric blind 131" to close when the temperature in each battery module 21 is higher than the second value until the temperature in each battery module 21 is lower than the second value; in a specific implementation, the second value is 25°C, that is, when the temperature of each battery cell is lower than 25°C, the first electric blind 131" is opened, and the second electric blind 132 and the fourth electric blind 134 are closed; when the temperature of each battery cell is higher than 25°C, the first electric blind 131" is closed, and the second electric blind 132 and the fourth electric blind 134 are opened.

[0103] When the fire detector detects a fire in the first compartment 11 , the output control device 60 controls the third electric shutter 151 to open to discharge gas.

[0104] The above description and embodiments are intended to explain the scope of protection of the present invention, but do not constitute a limitation thereto. Modifications, equivalent substitutions, or other improvements to the embodiments of the present invention or portions thereof that can be obtained by a person of ordinary skill in the art through logical analysis, reasoning, or limited experimentation based on the teachings of the present invention or the above embodiments, combined with common knowledge, ordinary technical knowledge in the field, and / or prior art, should all be included within the scope of protection of the present invention.

Claims

1. An energy storage container, characterized in that: include A box body (10) is provided with a first bin (11), a second bin (12), a third bin (13) and a fourth bin (14); the second bin (12) and the third bin (13) are adjacent to the first bin (11); the third bin (13) and the fourth bin (14) are adjacent to each other; the first bin (11) and the fourth bin (14) form closed chambers; the second bin (12) and the third bin (13) are connected to the outside; An energy storage device (20) is placed in the first compartment (11) and includes a plurality of battery modules (21); the energy storage device (20) includes a plurality of battery clusters arranged along a first direction, each battery cluster includes a plurality of battery modules (21) arranged along a third direction, and each battery module (21) is provided with a liquid inlet and a liquid outlet and has the same cooling flow channel; A cooling liquid circulation supply device (30) is placed in the second chamber (12) and is provided with a liquid supply port (32) and a liquid return port (33), and is provided with a first heat dissipation fan (31); The piping system (40) is laid in the first compartment (11) corresponding to each battery module (21) and is provided with a liquid supply end and a liquid return end extending into the second compartment (12), wherein the liquid supply end and the liquid return end are respectively connected to the liquid supply port (32) and the liquid return port (33); the piping system (40) comprises a liquid supply pipe (41), a liquid return pipe (42) and a flow diversion subsystem; one end of the liquid supply pipe (41) forms the liquid supply end, and the other end is connected to the flow diversion subsystem at the total flow diversion end (01); one end of the liquid return pipe (42) forms the liquid return end, and the other end is connected to the flow diversion subsystem at the total flow diversion end (01); The subsystem is located at the total liquid collecting end (02); the shunt subsystem is used to connect the total shunt end (01) with the liquid inlets of all battery modules (21) and to connect the total liquid collecting end (02) with the liquid outlets of all battery modules (21); in the shunt subsystem, the liquid flow lengths of all battery modules (21) are equal; the liquid flow length of the battery module (21) is equal to the sum of the pipe distance between the liquid supply end of the battery module (21) and the total shunt end (01) and the pipe distance between the liquid return end of the battery module (21) and the total liquid collecting end (02); A power conversion device (50) is placed in the third compartment (13) and is used to charge or discharge the energy storage device (20), and is provided with a second heat dissipation fan (52); an output control device (60), which is placed in the fourth compartment (14) and is used to output direct current and control the operation of the energy storage device (20), the power conversion device (50) and the refrigeration equipment (70); and A refrigeration device (70) is placed in the fourth compartment (14) and is used to dissipate heat from the output control device (60).

2. An energy storage container according to claim 1, characterized in that: The invention also includes a temperature sensor correspondingly placed in each battery module (21) and connected to the output control device (60) by signal, wherein the temperature sensor is used to detect the temperature value in the corresponding battery module (21) and send it to the output control device (60); the power conversion device (50) includes a plurality of bidirectional DC-DC converters (51); the box (10) further forms a heat exchange channel (1311, 1311") suitable for opening and closing between the first compartment (11) and the third compartment (13); when each battery module (21) is in a charging mode, the output control device (60) is suitable for controlling the heat exchange channel (1311, 1311") to be closed when the temperature of each battery module (21) is higher than a first value, and the output control device (60) The device is also adapted to control the heat exchange passage (1311, 1311") to be opened when the temperature of each battery module (21) is lower than a first value, so that the first compartment (11) and the third compartment (13) are connected until the temperature inside each battery module (21) is higher than the first value; when each battery module (21) is in a discharge mode, the output control device (60) is adapted to control the heat exchange passage (1311, 1311") to be closed when the temperature of each battery module (21) is higher than a second value, and the output control device (60) is further adapted to control the heat exchange passage (1311, 1311") to be opened when the temperature of each battery module (21) is lower than a second value, so that the first compartment (11) and the third compartment (13) are connected until the temperature inside each battery module (21) is higher than the second value.

3. The energy storage container according to claim 2, characterized in that: The housing (10) is provided with a first electric blind (131, 131") for separating the first compartment (11) and the third compartment (13); the heat exchange channel (1311, 1311") is formed on the first electric blind (131, 131"); the output control device (60) is suitable for controlling the first electric blind (131, 131") to open or close so as to open or close the heat exchange channel (1311, 1311"); the housing (10) is provided with a first air inlet (133) and a second electric blind (132) facing outwards corresponding to the third compartment (13); when the second electric blind (132) is opened, a first air outlet is formed for the third compartment (13). The second heat dissipation fan (52) is adapted to drive the airflow from the first air inlet (133) to the first air outlet (1321); when each battery module (21) is in a charging mode, the output control device (60) is further adapted to control the second electric blinds (132) to close when the temperature in each battery module (21) is lower than a first value until the temperature in each battery module (21) is higher than the first value; when each battery module (21) is in a discharging mode, the output control device (60) is further adapted to control the second electric blinds (132) to close when the temperature in each battery module (21) is lower than a second value until the temperature in each battery module (21) is higher than the second value.

4. An energy storage container as claimed in claim 3, characterized in that: The invention also includes a fire-fighting device (80) and a fire detector placed in the first compartment (11) and connected to the output control device (60) by signal; the box (10) is further provided with a fifth compartment (15) adapted to be in communication with and adjacent to the first compartment (11); the box (10) is provided with a third electric shutter (151) facing outward corresponding to the fifth compartment (15); the fire-fighting device (80) is placed in the fifth compartment (15); the output control device (60) is used to control the operation of the fire-fighting device (80) and is adapted to control the opening of the third electric shutter (151) to discharge gas when a fire occurs in the first compartment (11).

5. The energy storage container according to claim 4, characterized in that: The first bin (11) extends along a first direction, the second bin (12) and the fourth bin (14) are respectively located at two ends of the first bin (11), the fifth bin (15) is arranged on the same side as and adjacent to the fourth bin (14), and the third bin (13) is also adjacent to the fifth bin (15).

6. The energy storage container according to claim 5, characterized in that: The fifth bin (15) is adjacent to the fourth bin (14) along the second direction; the third bin (13) is arranged on the same side as the fourth bin (14) and the fifth bin (15); the projection of the third bin (13) along the third direction covers the projection of the fourth bin (14) and the fifth bin (15) along the third direction; the first direction, the second direction and the third direction are orthogonal; the first electric blind (131) and the second electric blind (132) are arranged opposite to each other and are both perpendicular to the first direction, and the first air inlet (133) is opened along the second direction.

7. The energy storage container according to claim 6, characterized in that: The third direction is a vertical direction, the third compartment (13) is located above the fourth compartment (14) and the fifth compartment (15), and the third electric blind (151) is perpendicular to the first direction; the box (10) is provided with a first wall and a second wall corresponding to the third compartment (13) along the second direction, and the first wall and the second wall are both perpendicular to the second direction, and the first air inlet (133) is opened on the first wall and the second wall; the power conversion device (50) includes two rows of power conversion groups arranged along the second direction, each power conversion group includes a plurality of bidirectional DC-DC converters (51) arranged along the third direction, and the two rows of power conversion groups cooperate to form a first air duct (03); each bidirectional DC-DC converter (51) is provided with at least one second heat dissipation fan (52), and the second heat dissipation fan (52) is suitable for driving the airflow from the first air inlet (133) to flow to the first air duct (03) and then flow out through the first electric blind (131) or the second electric blind (132).

8. The energy storage container according to claim 5, characterized in that: The projection of the first warehouse (11) along the first direction covers the projection of the fourth warehouse (14) and the fifth warehouse (15) along the first direction; the box body (10) is provided with a third wall and a third wall corresponding to the third warehouse (13) and parallel to each other and opposite to each other, and the third wall and the fourth wall are both perpendicular to the second direction, and the first air inlet (133) is opened on the third wall and the fourth wall; the third warehouse (13) extends along the first direction, one end of which is adjacent to the second warehouse (12) along the first direction, and the other end is connected to the fourth warehouse (14) and the fifth warehouse (15) along the third direction, and the projection of the third warehouse (13) along the third direction covers the projection of the first warehouse (11), the third warehouse (13) and the fifth warehouse (15) along the third direction; the first direction, the second direction and the third direction are orthogonal to each other; the first electric blind (131") is perpendicular to the third direction, and the second electric blind (132) is perpendicular to the first direction and is located at the end of the third warehouse (13) away from the second warehouse (12).

9. The energy storage container according to claim 8, characterized in that: The third direction is a vertical direction, the third compartment (13) is located above the first compartment (11), the fourth compartment (14) and the fifth compartment (15), the third electric blind (151) is perpendicular to the first direction, and the box body (10) is provided with an outwardly facing hollow structure corresponding to the second compartment (12); the box body (10) is also provided with a fourth electric blind (134), the fourth electric blind (134) is perpendicular to the first direction and is located at one end of the third compartment (13) close to the second compartment (12); when each battery module (21) is in a charging mode, the output control device (60) is further adapted to control the fourth electric blind (134) to close when the temperature in each battery module (21) is lower than a first value until the temperature in each battery module (21) is higher than the first value; when each battery module (21) is in a discharging mode, the output The control device (60) is further adapted to control the fourth electric blind (134) to close when the temperature in each battery module (21) is lower than a second value until the temperature in each battery module (21) is higher than the second value; the power conversion device (50) comprises two rows of power conversion groups arranged along the second direction, each power conversion group comprising a plurality of bidirectional DC-DC converters (51) arranged along the first direction, and the two rows of power conversion groups cooperate to form a second air duct (04); each bidirectional DC-DC converter (51) is provided with at least one second heat dissipation fan (52), and the second heat dissipation fan (52) is adapted to drive airflow from the first air inlet (133) to flow into the second air duct (04), and then flow out through the second electric blind (132) and the fourth electric blind (134) or through the first electric blind (131").

10. An energy storage container according to any one of claims 1 to 9, characterized in that: The output control device (60) comprises a power distribution unit, a convergence unit, a UPS unit, a control unit, a switch and an isolation transformer.

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