Energy storage fire-fighting cooling system

Abstract

The utility model provides an energy storage fire-fighting cooling system. The energy storage fire-fighting cooling system comprises a heat exchange unit, a plurality of battery packs and a main control system, a liquid cooling plate, a battery pack, a detector and a battery management system are arranged in each battery pack, a fire-fighting cooling channel is arranged in each liquid cooling plate, a fire-fighting cooling medium is introduced into each fire-fighting cooling channel, an electromagnetic valve is arranged on each fire-fighting cooling channel, and the battery management systems are electrically connected with the detectors so as to detect whether thermal runaway occurs in the battery packs; the main control system is electrically connected with each battery pack and is used for acquiring the running condition in the battery pack and controlling the opening and closing of the electromagnetic valve; when the electromagnetic valve is in a closed state, the fire-fighting cooling channel communicates with the heat exchange unit, and when the electromagnetic valve is in an open state, the fire-fighting cooling channel communicates with the heat exchange unit and the interior of the battery pack. The internal space of the energy storage cabin can be saved, the integration level of the energy storage cabin is further improved, and the energy density of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery energy storage, in particular to an energy storage fire-fighting cooling system. Background Art

[0002] The accelerating development of the lithium battery industry has brought us more clean energy. Especially in the energy storage industry using lithium batteries, the large-scale energy storage prefabricated cabin can store clean electricity, smooth unstable wind power and photovoltaic power, and participate in the peak shaving and frequency modulation of the power system. With the development of technology, the energy storage prefabricated cabin is also developing towards higher integration and greater energy density to reduce costs and the occupied area of the power station site. In the existing solutions, the temperature control system and the fire-fighting system in the prefabricated cabin are independent of each other, occupying a large space in the prefabricated cabin, resulting in a low integration degree of the prefabricated cabin and limited improvement of the system energy density. Content of the Utility Model

[0003] The purpose of the utility model is to propose an energy storage fire-fighting cooling system for the deficiencies of the above-mentioned existing technologies, which can save the internal space of the energy storage cabin, further improve the integration degree of the energy storage cabin, and increase the system energy density.

[0004] The utility model proposes an energy storage fire-fighting cooling system, which includes a heat exchange unit, a number of battery packs and a main control system; a liquid cooling plate, a battery pack, a detector and a battery management system are arranged in each battery pack, a fire-fighting cooling channel is arranged in the liquid cooling plate, a fire-fighting cooling medium is passed through the fire-fighting cooling channel, a solenoid valve is arranged on the fire-fighting cooling channel, and the battery management system is electrically connected to the detector to detect whether thermal runaway occurs in the battery pack; the main control system is electrically connected to each battery pack to obtain the operating conditions in the battery pack and control the opening and closing of the solenoid valve; when the solenoid valve is in the closed state, the fire-fighting cooling channel is communicated with the heat exchange unit, and when the solenoid valve is in the open state, the fire-fighting cooling channel is communicated with the inside of the heat exchange unit and the battery pack.

[0005] A preferred technical solution of the utility model: the liquid cooling plates in different battery packs are connected in series or in parallel to the heat exchange unit.

[0006] A preferred technical solution of the utility model: the liquid cooling plate is arranged at the bottom of the battery pack, a number of battery packs are arranged on the liquid cooling plate, water nozzles are arranged inside the battery pack and on the fire-fighting cooling channel, and the solenoid valve is connected to the water nozzle.

[0007] Preferred technical solution of the present utility model: The solenoid valve includes a valve body, a valve core, a spring and an electromagnetic assembly. An inlet port and an outlet port are respectively arranged at the bottom and the top of the valve body. The electromagnetic assembly can attract the valve core to move in the valve body to connect the inlet port and the outlet port, and the spring can act on the valve core and drive the valve core to move in the valve body to cut off the inlet port and the outlet port.

[0008] Preferred technical solution of the present utility model: A clamping member for connecting the water nozzle is arranged at the bottom of the valve body. A clamping groove is arranged on the side wall of the valve body, and the clamping groove communicates with the inlet port. A positioning groove is arranged on the outer side wall of the water nozzle. The inlet port is sleeved on the water nozzle, the clamping groove is located outside the positioning groove, and the clamping member is clamped into the clamping groove and the positioning groove.

[0009] Preferred technical solution of the present utility model: The bottom of the valve body is cylindrical, and the two clamping grooves are oppositely arranged on the outer side wall of the valve body. The clamping member includes two linearly arranged clamping strips arranged oppositely, and the middle part of the linearly arranged clamping strip is clamped in the clamping groove.

[0010] Preferred technical solution of the present utility model: A temperature probe for detecting the temperature of the fire-fighting cooling medium is arranged in the solenoid valve, and the temperature probe is arranged in the inlet port.

[0011] Preferred technical solution of the present utility model: A fixing member is arranged in the battery pack. The fixing member is L-shaped and is arranged on the liquid cooling plate. The two fixing members are arranged oppositely at intervals, and the solenoid valve is clamped between the two fixing members.

[0012] Preferred technical solution of the present utility model: A transverse connecting plate is arranged on the opposite end faces of the two fixing members. The transverse connecting plate is perpendicular to the fixing member, and the end of the transverse connecting plate abuts against the outer wall of the solenoid valve.

[0013] Preferred technical solution of the present utility model: A plurality of water nozzles are arranged on the fire-fighting cooling channel, and solenoid valves are arranged on all the water nozzles.

[0014] One kind of energy storage fire-fighting cooling system of the present utility model has the following beneficial effects:

[0015] 1. The fire-fighting pipeline is optimized, and the fire-fighting pipeline and the cooling pipeline are integrated into one. Using the fire-fighting cooling medium can not only be used as a coolant to reduce the system temperature, but also be used as a fire-fighting liquid to play a fire-fighting role, saving the internal space of the energy storage cabin, further improving its level and increasing the system energy density;

[0016] 2. The flow of the fire-fighting cooling medium is controlled by a solenoid valve. When thermal runaway occurs in a single battery pack, the spread of thermal runaway can be inhibited, and thermal runaway can be isolated, avoiding disasters in the entire energy storage cabin caused by thermal runaway of a single battery pack and reducing losses.

[0017] 3. The solenoid valve is connected to the water nozzle through a clamping part. The clamping part can limit the horizontal and vertical movement of the solenoid valve to improve the connection efficiency between the solenoid valve and the water nozzle, facilitating the installation and replacement of the solenoid valve. The fixing part forms a limit outside the solenoid valve, restricting the circumferential rotation of the solenoid valve and improving the connection stability and tightness between the water nozzle and the solenoid valve.

[0018] 4. A temperature probe is arranged inside the solenoid valve to detect the temperature of the fire-fighting cooling medium. The temperature inside the liquid cooling plate can be detected through the temperature probe for better temperature control.

[0019] 5. In a single battery pack, multiple water nozzles and solenoid valves are arranged on the fire-fighting cooling channel. The fire-fighting cooling medium can flow into the battery pack simultaneously from multiple points and in multiple directions through the multiple water nozzles, quickly submerging the battery packs inside the battery pack and timely preventing the spread of thermal runaway. Brief Description of the Drawings

[0020] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. In these drawings, like reference numerals are used to represent like elements. The drawings in the following description are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the internal connection of the energy storage prefabricated cabin according to an embodiment of the present invention.

[0022] Figure 2 It is an exploded view of the solenoid valve according to an embodiment of the present invention.

[0023] Figure 3 It is a cross-sectional view of the solenoid valve in the closed state according to an embodiment of the present invention.

[0024] Figure 4 It is a cross-sectional view of the solenoid valve in the open state according to an embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the battery pack according to an embodiment of the present invention.

[0026] Figure 6 It is a top view of the battery pack according to an embodiment of the present invention.

[0027] Figure 7 According to an embodiment of the present inventionFigure 6 Cross-sectional view from the A-A perspective in the middle.

[0028] Figure 8 This is a cross-sectional view of the cooperation between the solenoid valve and the water nozzle in the battery pack of the embodiment of the present utility model.

[0029] In the figure: 10, valve body; 101, inlet flow port; 102, outlet flow port; 103, cavity; 104, limiting groove; 105, clamping groove; 11, valve core; 111, connection end; 112, stop end; 113, limiting block; 12, electromagnetic assembly; 121, iron core; 122, coil; 13, spring; 14, end cap; 141, socket; 15, cover plate; 16, sealing ring; 17, clamping member; 171, linear clamping strip; 172, cross bar; 18, temperature probe; 20, battery pack; 21, liquid cooling plate; 211, fire fighting cooling channel; 22, water nozzle; 221, positioning groove; 23, fixing member; 231, horizontal connecting plate. Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other arbitrarily.

[0031] Please refer to Figures 1 to 8 . An energy storage fire fighting cooling system includes a heat exchange unit, a plurality of battery packs 20, and a main control system, all of which are arranged in an energy storage cabin. A liquid cooling plate 21, a plurality of battery packs, a detector, and a battery management system are arranged in the battery pack 20. A fire fighting cooling channel 211 is arranged in the liquid cooling plate 21, and a fire fighting cooling medium flows through it. A solenoid valve is arranged on the fire fighting cooling channel 211; the battery management system is electrically connected to the detector to detect whether a thermal runaway occurs in the battery pack 20; the main control system is electrically connected to each battery pack 20 to obtain the operating conditions of the battery pack 20 and control the opening and closing of the solenoid valve; when the solenoid valve is in the closed state, the fire fighting cooling channel 211 is connected to the heat exchange unit, and the fire fighting cooling medium flows in the fire fighting cooling channel 211 to reduce the temperature of the battery pack 20; when the solenoid valve is in the open state, the fire fighting cooling channel 211 is connected to the inside of the heat exchange unit and the battery pack 20, and the fire fighting cooling medium enters the inside of the battery pack 20 to prevent the spread of thermal runaway of the battery pack 20.

[0032] Several battery packs 20 are electrically connected to provide energy for the energy storage compartment. Each battery pack 20 is provided with a liquid cooling plate 21, several battery groups, detectors and a battery management system. The battery management system is electrically connected to the detector. The detector is used to detect whether the battery pack 20 is operating normally and whether thermal runaway occurs in the battery pack 20. The battery management system is communicatively connected to the main control system to upload the status information of the battery pack 20 to the main control system. The main control system determines whether to control the solenoid valve to open based on the information.

[0033] See also Figure 7 and 8 A fire cooling channel 211 is provided in the liquid cooling plate 21, and the fire cooling channel 211 is connected to the heat exchange group. The fire cooling channel 211 is coiled in the liquid cooling plate 21, and the liquid cooling plate 21 is arranged at the bottom of the battery pack 20. A plurality of battery packs are arranged above the liquid cooling plate 21. A fire cooling medium is passed through the fire cooling channel 211. The fire cooling medium flows in the fire cooling channel 211 to take away the heat generated during the charging and discharging of the battery pack, so as to cool down the battery pack 20.

[0034] A solenoid valve is provided on the fire cooling channel 211, and the solenoid valve is connected to the main control system through a solenoid valve controller. The main control system controls the opening and closing of the solenoid valve according to the internal status information of the battery pack 20 transmitted by the battery management system.

[0035] When the battery pack 20 is working normally, the solenoid valve is closed, the fire cooling medium flows in the liquid cooling plate 21, and exchanges heat with the outside world at the heat exchange group, taking away the heat of the battery pack 20 and reducing the internal temperature of the energy storage compartment; when the solenoid valve detects that there is an abnormality inside the battery pack 20 or thermal runaway occurs, the solenoid valve opens, and the fire cooling channel 211 connects the heat exchange group with the inside of the battery pack 20. The fire cooling medium flows into the battery pack 20 through the fire cooling channel 211, and the fire cooling medium submerges the battery pack inside the battery pack 20 to suppress the spread of thermal runaway and play a fire-fighting role.

[0036] A water nozzle 22 is provided inside the battery pack 20 and on the fire cooling channel 211, and a solenoid valve is provided on the water nozzle 22, so that the fire cooling medium flows into the battery pack 20 through the water nozzle 22. The structure of the solenoid valve is as follows Figures 2 to 4 As shown, it includes a valve body 10, a valve core 11, a spring 13 and an electromagnetic assembly 12. The bottom of the valve body 10 is provided with an inlet 101 connected to the fire cooling channel 211, and the top is provided with an outlet 102 connected to the inside of the battery pack 20. A cavity 103 is provided between the inlet 101 and the outlet 102. The valve core 11, the spring 13 and the electromagnetic assembly 12 are all arranged in the cavity 103. The valve core 11 moves back and forth under the action of the spring 13 and the electromagnetic assembly 12, and can connect or cut off the inlet 101 and the outlet 102 to control the flow direction of the fire cooling medium.

[0037] The valve core 11 is inserted into the cavity 103. The electromagnetic assembly 12 includes an iron core 121 and a coil 122 wound around the outer periphery of the iron core 121. The electromagnetic assembly 12 is fixedly arranged in the cavity 103 and is arranged close to the end of the cavity 103. A tail cover 14 is arranged at the end of the cavity 103. The electromagnetic assembly 12 is arranged in the tail cover 14. A socket 141 is arranged on one side end face of the tail cover 14. The coil 122 is connected to an external power supply through the socket 141. A cover plate 15 is arranged at the other end of the tail cover 14. The cover plate 15 is snap-connected to the tail cover 14 to limit and fix the electromagnetic assembly 12 in the tail cover 14. External threads are arranged on the outer periphery of the tail cover 14, and internal threads are arranged at the end of the cavity 103. The tail cover 14 is threadedly connected to the cavity 103 to fix the electromagnetic assembly 12 at the end of the cavity 103.

[0038] The cavity 103 is a linear cavity 103 with a circular cross-section. A stop block is arranged at the other end of the cavity 103. The stop block equally divides the end cross-section of the cavity 103 into upper and lower parts, and the inlet 101 and the outlet 102 are respectively located at the upper and lower ends of the stop block. The inlet 101 is communicated with the lower half cross-section of the cavity 103, and the outlet 102 is communicated with the lower half cross-section of the cavity 103. The valve core 11 includes a connection end 111 and a stop end 112. The connection end 111 is disc-shaped, and its cross-section matches the cross-section of the cavity 103. The stop end 112 is semi-disc-shaped, and its cross-section matches the semi-cross-section of the cavity 103.

[0039] Both ends of the spring 13 are fixedly connected to the cover plate 15 and the connection end 111 respectively. In the cavity 103, the spring 13 is always in a compressed state. When the coil 122 is not powered on, under the action of the spring 13, the stop end 112 of the valve core 11 abuts against the stop block, and the communication between the inlet 101 and the cavity 103 is cut off by the stop end 112. At this time, the solenoid valve is in the closed state, and the fire-fighting cooling medium flows in the liquid cooling plate 21. When the coil 122 is powered on, the electromagnetic assembly 12 generates magnetism to attract the valve core 11 to move towards the electromagnetic assembly 12. The stop end 112 is separated from the stop block, the inlet 101 is communicated with the cavity 103, and the outlet 102 is communicated with the cavity 103. At this time, the solenoid valve is in the open state, and the fire-fighting cooling medium can flow into the battery pack 20 through the inlet 101, the cavity 103, and the outlet 102 in sequence. The fire-fighting cooling medium contacts the battery pack to play a fire-fighting role.

[0040] Preferably, a temperature probe 18 is arranged in the solenoid valve. The temperature probe 18 is arranged in the inlet 101. The temperature probe 18 is electrically connected to the main control system. The temperature of the fire-fighting cooling medium in the liquid cooling plate 21 can be monitored in real time through the temperature probe 18 to optimize the heat dissipation of the battery pack 20.

[0041] Furthermore, raised limit blocks 113 are arranged at intervals on the outer circumference of the connecting end 111, and a limit groove 104 extending along the axial direction of the cavity 103 is arranged on the inner wall of the cavity 103. The limit blocks 113 are inserted into the limit groove 104. When the valve core 11 moves under the action of the spring 13 and the electromagnetic assembly 12, the valve core 11 can only move in a straight line and cannot rotate, thereby improving the sealing of the valve core 11.

[0042] See also Figure 7 and Figure 8 In this embodiment, the lower end of the valve body 10 is in a circular tubular shape, and a linear slot 105 is arranged on its outer wall. The slot 105 is arranged horizontally, and the slot 105 passes through the side wall of the valve body 10 to communicate with the inlet 101. The two slots 105 are arranged oppositely on the valve body 10; the faucet 22 is in a circular tubular shape, and an annular positioning groove 221 is arranged on the faucet 22. When the solenoid valve is sleeved on the faucet 22, the slot 105 corresponds to the positioning groove 221, and the solenoid valve and the faucet 22 can be fixed by the clamp 17.

[0043] Specifically, the clamping member 17 includes two linear clamping strips 171 arranged in parallel and spaced apart, one end of the two linear clamping strips 171 is bent relative to each other, and the other ends of the two linear clamping strips 171 are connected by a cross bar 172. During installation, the inlet 101 is first sleeved on the water spout 22, and then the two linear clamping strips 171 are slightly opened, so that the two linear clamping strips 171 are respectively placed horizontally in the clamping groove 105, the middle part of the linear clamping strip 171 is located in the valve body 10, and its two ends are stopped by the clamping groove 105 and are located outside the valve body 10, and the linear clamping strip 171 located inside the valve body 10 is simultaneously clamped into the positioning groove 221 of the water spout 22, and the clamping member 17 simultaneously connects the solenoid valve and the water spout 22; the linear clamping strip 171 is clamped into the positioning groove 221 to limit the longitudinal displacement of the solenoid valve, and the bent parts at both ends of the linear clamping strip 171 and the cross bar 172 limit the lateral displacement of the solenoid valve, thereby fixing the solenoid valve and the water spout 22. During disassembly, the two linear clips 171 are opened and moved to separate the linear clips 171 from the slots 105 , and the solenoid valve is picked up to complete the disassembly.

[0044] The cross-section of the inlet 101 is arranged to be stepped, and the diameter of the inlet 101 gradually decreases from the inlet 101 to the outlet 102. The sealing ring 16 is arranged at the top of the water nozzle 22. When the solenoid valve is connected to the water nozzle 22, the sealing ring 16 is clamped between the stepped surface of the inlet 101 and the top of the water nozzle 22. The sealing ring 16 is used to improve the sealing performance of the connection between the water nozzle 22 and the solenoid valve.

[0045] Furthermore, in order to maintain the connection stability between the water nozzle 22 and the solenoid valve, a fixing part 23 is also provided on the liquid cooling plate 21. The fixing part 23 is L-shaped, one side of which is fixed on the liquid cooling plate 21, and the other side is arranged close to the outer wall of the solenoid valve. The two fixing parts 23 are symmetrically arranged about the water nozzle 22 to limit the solenoid valve between the two fixing parts 23 to prevent the solenoid valve from tilting.

[0046] Furthermore, a transverse connecting plate 231 is provided on the opposite end faces of the two fixing members 23. The transverse connecting plate 231 is perpendicular to the fixing member 23. When the solenoid valve is installed on the water nozzle 22, the two fixing members 23 are symmetrically arranged on both sides of the solenoid valve. At the same time, the end of the transverse connecting plate 231 abuts against the outer wall of the solenoid valve. The transverse connecting plate 231 is used to limit the rotation of the solenoid valve to improve the connection tightness between the solenoid valve and the water nozzle 22.

[0047] Preferably, a plurality of water nozzles 22 are provided on the fire-fighting cooling channels 211 in the same liquid cooling plate 21, and a solenoid valve is provided on each water nozzle 22. When the battery pack 20 has a thermal runaway, the fire-fighting cooling medium is simultaneously introduced into the battery pack 20 through a plurality of water nozzles 22. The fire-fighting cooling medium enters the battery pack 20 from multiple positions and aspects, can quickly submerge the battery pack, and timely prevent the spread of thermal runaway.

[0048] In this embodiment, in the energy storage cabin, the liquid cooling plates 21 of a plurality of battery packs 20 are connected in series through pipes and communicate with a heat exchange unit. The fire-fighting cooling medium sequentially flows through different battery packs 20 through the pipes, and exchanges heat with the outside through the heat exchange unit, and circulates to control the temperature inside the energy storage cabin.

[0049] As another implementation manner, in the energy storage cabin, a single battery pack 20 is connected to the heat exchange unit through a pipe, and the liquid cooling plates 21 of a plurality of battery packs 20 are connected in parallel. The fire-fighting cooling medium circulates inside between the single battery pack 20 and the heat exchange unit through the pipe to cool the battery pack 20, and the liquid cooling plates 21 in a plurality of battery packs 20 circulate synchronously to realize temperature control inside the energy storage cabin.

[0050] When the unit system is operating normally, the solenoid valve is in a closed state, and the fire-fighting cooling medium flows in the liquid cooling plate 21 to cool the battery pack 20. When the detector detects that the internal temperature and voltage of the battery pack 20 are abnormal and a thermal runaway occurs at the same time, the detector uploads the above information to the battery management system. The battery management system judges that the battery pack 20 has a thermal runaway based on this information and uploads the judgment to the main control system. The main control system controls the solenoid valve in the problematic battery pack 20 to open through the solenoid valve controller based on this judgment. The fire-fighting cooling medium enters the battery pack 20 from the liquid cooling plate 21 through the solenoid valve. The fire-fighting cooling medium submerges the battery pack and gradually fills the inside of the battery pack 20, isolating the thermal runaway, preventing a single battery pack 20 from causing an accident in the entire energy storage cabin due to thermal runaway, and reducing losses.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy storage firefighting cooling system, characterized in that: include A heat exchange unit, a plurality of battery packs (20) and a main control system; Each battery pack (20) is provided with a liquid cooling plate (21), a battery pack, a detector and a battery management system; the liquid cooling plate (21) is provided with a fire cooling channel (211); a fire cooling medium flows through the fire cooling channel (211); a solenoid valve is provided on the fire cooling channel (211); the battery management system is electrically connected to the detector to detect whether thermal runaway occurs in the battery pack (20); The main control system is electrically connected to each of the battery packs (20) to obtain the operating conditions in the battery pack (20) and control the opening and closing of the solenoid valve; When the solenoid valve is in a closed state, the fire cooling channel (211) is connected to the heat exchange group; when the solenoid valve is in an open state, the fire cooling channel (211) is connected to the heat exchange group and the interior of the battery pack (20).

2. The energy storage firefighting cooling system according to claim 1, characterized in that: The liquid cooling plates (21) in different battery packs (20) are connected in series or in parallel to the heat exchange group.

3. The energy storage firefighting cooling system according to claim 1, characterized in that: The liquid cooling plate (21) is arranged at the bottom of the battery pack (20), a plurality of the battery packs are arranged in an array on the liquid cooling plate (21), a water nozzle (22) is arranged inside the battery pack (20) and on the fire cooling channel (211), and the solenoid valve is connected to the water nozzle (22).

4. The energy storage firefighting cooling system according to claim 3, characterized in that: The solenoid valve comprises a valve body (10), a valve core (11), a spring (13) and an electromagnetic assembly (12); the valve body (10) is provided with an inlet (101) and an outlet (102) at the bottom and top respectively; the electromagnetic assembly (12) can attract the valve core (11) to move in the valve body (10) so as to connect the inlet (101) and the outlet (102); the spring (13) can act on the valve core (11) and drive the valve core (11) to move in the valve body (10) so as to separate the inlet (101) and the outlet (102).

5. The energy storage firefighting cooling system according to claim 4, characterized in that: A clamping piece (17) for connecting to the water spout (22) is provided at the bottom of the valve body (10); a clamping groove (105) is provided on the side wall of the valve body (10); the clamping groove (105) is connected to the inlet (101); a positioning groove (221) is provided on the outer side wall of the water spout (22); the inlet (101) is sleeved on the water spout (22); the clamping groove (105) is located outside the positioning groove (221); and the clamping piece (17) is clamped into the clamping groove (105) and the positioning groove (221).

6. The energy storage firefighting cooling system according to claim 5, characterized in that: The bottom of the valve body (10) is cylindrical, the two clamping grooves (105) are arranged oppositely on the outer wall of the valve body (10), and the clamping member (17) comprises two oppositely arranged linear clamping strips (171), the middle part of the linear clamping strip (171) is clamped in the clamping groove (105).

7. The energy storage firefighting cooling system according to claim 4, characterized in that: A temperature probe (18) for detecting the temperature of the fire-fighting cooling medium is arranged in the solenoid valve, and the temperature probe (18) is arranged in the inlet (101).

8. The energy storage firefighting cooling system according to claim 4, characterized in that: A fixing member (23) is provided in the battery pack (20), the fixing member (23) is L-shaped, the fixing member (23) is provided on the liquid cooling plate (21), the two fixing members (23) are relatively spaced apart, and the solenoid valve is sandwiched between the two fixing members (23).

9. The energy storage firefighting cooling system according to claim 8, characterized in that: A transverse connecting plate (231) is provided on the opposite end surfaces of the two fixing members (23); the transverse connecting plate (231) is perpendicular to the fixing members (23); and the end of the transverse connecting plate (231) abuts against the outer wall of the solenoid valve.

10. The energy storage firefighting cooling system according to claim 3, characterized in that: A plurality of the water nozzles (22) are provided on the fire-fighting cooling channel (211), and each of the plurality of water nozzles (22) is provided with a solenoid valve.

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