Water fire-fighting battery changing cabinet

Abstract

The embodiment of the utility model provides a water fire-fighting power conversion cabinet. The water fire-fighting power conversion cabinet comprises a power conversion cabinet body, a battery bin and a fire-fighting system, the battery compartment is arranged in the battery changing cabinet body; the fire-fighting system comprises fire-fighting sprayers, a water inlet pipe, a first branch pipe and a second branch pipe; the fire-fighting sprayer is arranged at the top of the battery bin; the water inlet pipe is arranged on the outer side of the battery changing cabinet body and is connected with a tap water pipe; the water inlet pipe is provided with a valve and a water flow sensor, the valve is configured to control connection and disconnection of the water inlet pipe and the tap water pipe, and the water flow sensor is configured to detect water flow and flow velocity of the water inlet pipe; the first branch pipe and the second branch pipe are connected with the water inlet pipe and located on the downstream of the valve and the water flow sensor. The first branch pipe is connected with fire-fighting sprayers; the second branch pipe is connected with a drain pipe.

Description

Technical Field

[0001] This specification relates to the field of shared power exchange cabinets, and in particular to a water fire fighting power exchange cabinet. Background Art

[0002] The birth of shared electric motorcycles has brought many conveniences to people. In the past, when an electric bike ran out of power, the solution was to find a socket and connect the shared electric motorcycle to a power source for charging. However, this charging method is not only inconvenient, but also easily affects the work efficiency of takeaway boys and couriers. Shared power exchange cabinets can be used for battery replacement. With shared power exchange cabinets, users only need to use simple operations to replace fully charged batteries with dead batteries, which not only saves users' time, but is also convenient and quick to use. With the fierce market competition, the requirements for cost reduction of products are gradually increasing. For power exchange cabinets, it is necessary to reduce costs while ensuring the safety of operations and fire protection functions.

[0003] Therefore, it is hoped to provide a water fire-fighting power exchange cabinet that can ensure fire-fighting functions while saving costs. Utility Model Content

[0004] One or more embodiments of the present specification provide a water fire fighting power exchange cabinet. The water fire fighting power exchange cabinet includes: a power exchange cabinet body, a battery compartment and a fire fighting system; the battery compartment is arranged inside the power exchange cabinet body; the fire fighting system includes a fire sprinkler, a water inlet pipe, a first branch pipe and a second branch pipe, the fire sprinkler is arranged on the top of the battery compartment, the water inlet pipe is arranged on the outside of the power exchange cabinet body, and the water inlet pipe is connected to the tap water pipe; the water inlet pipe is provided with a valve and a water flow sensor, the valve is configured to control the connection and disconnection of the water inlet pipe and the tap water pipe, and the water flow sensor is configured to detect the water flow rate and flow rate of the water inlet pipe; the first branch pipe and the second branch pipe are connected to the water inlet pipe, and the first branch pipe and the second branch pipe are located downstream of the valve and the water flow sensor; the first branch pipe is connected to the fire sprinkler; the second branch pipe is connected to the drain pipe.

[0005] In some embodiments, the valve is a ball valve or a pressure reducing valve.

[0006] In some embodiments, the height of the water inlet pipe is greater than or equal to the height of the fire sprinkler.

[0007] In some embodiments, the water fire fighting power exchange cabinet also includes a booster pump, and the booster pump is connected to the water inlet pipe.

[0008] In some embodiments, the second branch pipe is provided with a solenoid valve.

[0009] In some embodiments, the water fire fighting power exchange cabinet also includes an antifreeze tank, the antifreeze tank is connected to the water inlet pipe through an antifreeze pipe, and the antifreeze pipe is provided with an antifreeze valve.

[0010] In some embodiments, the water fire fighting power exchange cabinet also includes an emergency water interface, which is connected to the water inlet pipe, and the emergency water interface is detachably connected to the emergency water tank.

[0011] In some embodiments, there are multiple battery compartments, and the multiple battery compartments are arranged along the height direction of the battery exchange cabinet body.

[0012] In some embodiments, the fire protection system also includes a fan, a smoke sensor and a temperature sensor; the fan is arranged on the top and / or side of the battery exchange cabinet; the smoke sensor is arranged inside the battery exchange cabinet; the temperature sensor is arranged in multiple battery compartments.

[0013] Some embodiments of the utility model include the following beneficial effects: (1) By utilizing the inherent pressure characteristics of tap water, the water inlet pipe is directly connected to the tap water pipe without the need for an additional water tank, which can significantly compress the space of the power exchange cabinet and make the volume of the water fire fighting power exchange cabinet smaller; thereby saving plates and pipes, reducing assembly processes, and reducing costs. (2) By connecting the water inlet pipe to tap water, the water fire fighting power exchange cabinet only needs to be connected to tap water during installation, and no water replenishment is required; (3) There is no water tank in the water fire fighting power exchange cabinet, which can avoid the risk of electrical short circuit caused by water vapor evaporation; (4) By providing an antifreeze tank and an emergency water interface, the water fire fighting power exchange cabinet can be used in venues with various conditions, increasing its applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0015] Figure 1 is an exemplary schematic diagram of a water fire fighting power exchange cabinet according to some embodiments of this specification;

[0016] Figure 2 It is another exemplary schematic diagram of a water fire fighting power exchange cabinet according to some embodiments of this specification. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0018] It should be understood that the "system", "device", "unit" and / or "module" used herein are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0019] As shown in this specification and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0020] In existing products, in order to solve the fire-fighting function of the battery swap cabinet, a water tank is usually set at the bottom or top of the battery swap cabinet to store fire-fighting water; the disadvantage of this method is that due to the existence of the water tank, the volume of the battery swap cabinet cannot be designed to be very small, and sufficient water is required to extinguish the lithium battery fire (cooling and oxygen isolation), which leads to the volume of the water tank being often around 40L; in order to ensure continuous cooling and prevent the battery from re-igniting, the water needs to be recycled. This leads to the battery swap cabinet occupying a large space, and when placing the battery swap cabinet, more site space and rent are often required. For smaller sites, it is even impossible to place the battery swap cabinet.

[0021] Figure 1 It is an exemplary schematic diagram of a water fire fighting power exchange cabinet according to some embodiments of this specification.

[0022] In some embodiments, Figure 1 As shown, the water fire fighting power exchange cabinet may include a power exchange cabinet body 100, a battery compartment 200 and a fire fighting system.

[0023] The power exchange cabinet body 100 refers to a structure in the power exchange cabinet used to support the battery compartment or cover the battery compartment to make it beautiful. The shape of the power exchange cabinet body 100 can be various, such as a cuboid, a cylinder; it can also be other shapes, such as an irregular L shape. The material of the power exchange cabinet body 100 can include steel plate, fiberglass, stainless steel, aluminum alloy and plastic. In some embodiments, the power exchange cabinet body 100 may include a cabinet body, a cabinet door and a support foot. The cabinet door can be opened to facilitate maintenance by relevant technical personnel. The support foot is used to support the power exchange cabinet or adjust the balance during installation. In some embodiments, the support foot can be a caster, which can make it more convenient to move the power exchange cabinet. In some embodiments, the cabinet body, cabinet door, etc. of the power exchange cabinet body 100 are also provided with an equipotential grounding device; the potential grounding device can help avoid electric shock accidents in the power exchange cabinet and protect the safety of the operator. In some embodiments, the power exchange cabinet body 100 also has a drainage structure, which can drain the water inside the power exchange cabinet body 100 to avoid water accumulation in the power exchange cabinet body 100.

[0024] The battery compartment 200 refers to a device for storing batteries in the power exchange cabinet. The material of the battery compartment 200 can be the same as that of the cabinet, such as steel plate, fiberglass, stainless steel, aluminum alloy and plastic. In some embodiments, the battery compartment 200 may include a battery support frame, batteries, connecting cables and protective devices. The material of the battery support frame can be metal or plastic. The battery support frame is provided with a notch or clamping device matching the size of the battery for fixing the battery. The connecting cable is used to connect the battery to the power exchange cabinet to transmit electrical energy and signals. The protective device is used to avoid abnormal conditions such as overcharging, over-discharging, and short circuit of the battery to ensure the safe operation of the battery. Exemplarily, the protection device may include a protection circuit board, a separator, a temperature fuse and a positive temperature coefficient resistor arranged in the battery compartment; the protection circuit board has voltage detection and current detection functions, which can avoid overcharging, over-discharging and overcurrent during charging and discharging; the separator can be used, when the temperature reaches its defined temperature (such as 130°C), the pores of the separator are blocked by molten material, blocking the current from flowing between the electrodes; the temperature fuse can avoid excessive temperature; the resistance of the positive temperature coefficient resistor increases with increasing temperature, and it can be used as an overcurrent protector.

[0025] In some embodiments, one or more battery compartments 200 may be provided in the power exchange cabinet body 100, and multiple battery compartments 200 may improve the power exchange efficiency. In some embodiments, the battery compartments 200 are arranged in an array, and two adjacent rows of battery compartments 200 are arranged at intervals, and two adjacent columns of battery compartments 200 are arranged at intervals. The battery compartments 200 are arranged in an array interval, which can improve the space utilization of the power exchange cabinet; at the same time, it is convenient for the heat generated by the battery charging in each battery compartment 200 to diffuse to the interval area between the battery compartments 200.

[0026] The fire protection system is used to cool down and isolate the power exchange cabinet when overheating or fire occurs inside or around the power exchange cabinet. In some embodiments, the fire protection system includes a fire sprinkler 310, which is arranged on the top of the battery compartment 200. In some embodiments, when a water fire-fighting power exchange cabinet is provided with multiple battery compartments 200, a fire sprinkler 310 can be provided for each battery compartment 200, and the fire sprinklers 310 can be controlled separately.

[0027] The fire sprinkler 310 is used to detect and extinguish fires. The fire sprinkler senses heat or smoke from a fire and triggers the spraying of water or other fire extinguishing agents to achieve the effect of extinguishing a fire. The fire sprinkler 310 may include a high-pressure water mist sprinkler, a self-exposure type fire sprinkler, and the like.

[0028] In some embodiments, the fire protection system further includes a water inlet pipe 320, a first branch pipe 321, and a second branch pipe 322. The water inlet pipe 320 is arranged on the outside of the power exchange cabinet body 100, and the water inlet pipe is connected to the tap water pipe 400. In some embodiments, the water inlet pipe is provided with a valve 330 and a water flow sensor 340. The setting position of the water inlet pipe 320 can be the upper part, the middle part, and the lower part of the power exchange cabinet body 100. The setting position of the water inlet pipe 320 can also be determined according to the position of the tap water pipe 400. For example, when the tap water pipe 400 is located at the upper part relative to the power exchange cabinet body 100, the water inlet pipe 320 can be arranged at the upper part of the power exchange cabinet body 100, so that the overall pipeline length is shorter.

[0029] In some embodiments, the valve 330 is configured to control the connection and disconnection of the water inlet pipe and the water pipe 400. The valve 330 may include a butterfly valve, a gate valve, an angle valve, and the like. When the fire protection system is working, the valve is normally open, and the water inlet pipe 320 is connected to the water pipe 400. At this time, the tap water is used as fire protection water to complete the fire protection function. When the fire protection system is in the self-test state, the valve 330 is closed, cutting off the connection between the water inlet pipe 320 and the water pipe 400. The self-test state refers to the process in which the technician shuts down the fire protection system for inspection or equipment maintenance. The valve 330 is set on the outside of the power exchange cabinet body 100, so that the position of the valve can be easily observed in the self-test state, which is convenient for shutting off the water for inspection. In some embodiments, the valve 330 is a ball valve. The ball valve has the characteristics of easy operation, maintenance and durability.

[0030] In some embodiments, valve 330 is a pressure reducing valve. The pressure reducing valve can reduce the pressure in the water inlet pipe to avoid the risk of water leakage at the water pipe joint; it can also reduce the risk of water splashing onto the electrical circuit or circuit board of the power exchange cabinet due to excessive water flow when leaking.

[0031] In some embodiments, the water flow sensor 340 is configured to detect the water flow rate and flow rate of the water inlet pipe. The water flow sensor 340 may include a mechanical water flow sensor, an electromagnetic water flow sensor, an ultrasonic water flow sensor, a thermal water flow sensor, etc. Since the second branch pipe 322 connected to the drain pipe is in a normally closed state when the fire protection system is working, when the fire protection system is working, when the water flow sensor detects that the water flow rate or water flow rate at this position exceeds the preset threshold, it indicates that there is tap water flowing in the first branch pipe 321 connected to the fire sprinkler, which means that the water pressure is out of balance, the fire sprinkler is opened, and the fire extinguishing is started. The preset threshold value can be the water flow rate lost by natural evaporation or pipeline transportation. If it exceeds the preset threshold value, it indicates that the fire sprinkler is opened; the preset threshold value can be set according to experience.

[0032] In some embodiments, the fire protection system also includes an information input / output device. The information input / output device can input or output the current status of the fire protection system. The information input / output device may include an audio device, an operation panel, a display screen, a computer, and a smart phone, etc., which are connected to the water fire protection power exchange cabinet. In some embodiments, the water flow sensor 340 detects that the fire sprinkler starts extinguishing the fire, and the fire protection system transmits the fire extinguishing information (such as the number of the fire sprinkler that caught fire and the time of the fire) to the information input / output device, and the information input / output device can notify relevant technical personnel to rush to the scene to intervene.

[0033] In some embodiments, when the fire protection system is in a self-test state, the second branch pipe 322 connected to the drain pipe is opened, and the first branch pipe 321 connected to the fire sprinkler is closed. At this time, if the water flow sensor 340 detects that the water flow rate of the water inlet pipe is not 0, it indicates that the tap water can flow well from the water pipe 400 to the water inlet pipe 320, indicating that the water pipe is unobstructed; on the contrary, if the water flow sensor 340 detects that the water flow rate of the water inlet pipe is 0, it indicates that the water pipe 400 may have abnormal conditions such as water outage or freezing.

[0034] In some embodiments, the water inlet pipe 320 is connected to a first branch pipe 321 and a second branch pipe 322, and the first branch pipe and the second branch pipe are located downstream of the valve 330 and the water flow sensor 340. In some embodiments, the first branch pipe 321 is connected to the fire sprinkler 310; the second branch pipe 322 is connected to the drain pipe. When the valve is opened, the tap water of the water pipe 400 flows into the first branch pipe 321 through the water inlet pipe 320 and then flows into the fire sprinkler 310; when the valve of the drain pipe is opened, the tap water flows into the drain pipe through the second branch pipe 322.

[0035] In some embodiments of the present specification, the pressure characteristics of tap water are utilized to directly connect the water inlet pipe to the tap water pipe without the need for an additional water tank. This can significantly compress the space of the power exchange cabinet and make the volume of the water fire fighting power exchange cabinet smaller, thereby saving plates and pipes, reducing assembly steps, and reducing costs.

[0036] An exemplary fire-fighting process is that the valve 330 of the water inlet pipe is opened, and the fire sprinkler 310 configured in the battery compartment 200 is a 68-degree self-exposure type fire sprinkler. When the temperature in the battery compartment exceeds 68 degrees, the fire sprinkler bursts, and tap water continues to flow out to cool down the batteries in the battery compartment and extinguish the fire; the tap water after cooling and extinguishing the fire is discharged from the drainage structure at the bottom of the battery exchange cabinet.

[0037] In some embodiments, Figure 1 As shown, the second branch is provided with a solenoid valve 350. The solenoid valve 350 is used to detect whether the tap water in the water inlet pipe is frozen, or whether the tap water is cut off. As described above, in the self-check state, the solenoid valve 350 is opened to release the pressure of the tap water in the water inlet pipe and flow out. The water flow sensor 340 can detect the water flow, which indicates that everything is normal. If there is no water flow in the water flow sensor 340, it means that the tap water has frozen or the tap water has been cut off. Compared with ordinary valves, the solenoid valve has the advantage of not requiring manual operation and being remotely controlled by electrical signals. In some embodiments, the technician can remotely control the on and off of the solenoid valve on the information input / output device, and remotely determine whether the tap water pipe is normal based on the detection result of the water flow sensor 340.

[0038] In some embodiments, when there is one fire sprinkler, the height of the water inlet pipe is greater than or equal to the height of the fire sprinkler; when there are multiple fire sprinklers, such as Figure 1 As shown, the height of the water inlet pipe is greater than or equal to the height of the top fire sprinkler. By further limiting the height of the water inlet pipe, tap water can flow smoothly into the fire sprinkler when the fire sprinkler is activated, avoiding the possibility that the fire sprinkler at the highest point will reduce the fire extinguishing effect due to insufficient water pressure.

[0039] In some embodiments, the water fire fighting power exchange cabinet also includes a booster pump, which is connected to the water inlet pipe. The booster pump is used to increase the water pressure of the water inlet pipe. The booster pump may include a centrifugal pump, a pipeline pump, and a self-priming pump. The booster pump can increase the water pressure and enhance the fire fighting effect. In some embodiments, when the height of the tap water pipe and the water inlet pipe is higher than the height of the top fire sprinkler, the booster pump can be cancelled to save costs. In some embodiments, when the height of the water inlet pipe is lower than the top fire sprinkler, starting the booster pump can ensure that no matter how high the water inlet pipe is or how high the water pressure of the tap water is, each fire sprinkler can be guaranteed to have pressurized tap water available.

[0040] In some embodiments, the water fire fighting power exchange cabinet also includes an antifreeze tank. The antifreeze tank stores antifreeze. In winter, antifreeze can be added to water (water can be added before or after freezing) to lower the freezing point of water and help melt ice cubes. In some embodiments, antifreeze can be added as an additive to lower the freezing point of water when the temperature is low and the water has not yet frozen; or antifreeze can be added to thaw the frozen tap water when it has frozen. In some embodiments, the antifreeze tank is connected to the water inlet pipe through an antifreeze pipe, and an antifreeze valve is provided on the antifreeze pipe. The antifreeze flows into the water inlet pipe and mixes with the tap water in the water inlet pipe to form a fire fighting liquid. Since the antifreeze is used as an additive added to the water, compared with setting the water tank in the power exchange cabinet, the antifreeze tank is smaller in size; adding or replacing the fire fighting liquid is more convenient.

[0041] In some embodiments, the water fire fighting power exchange cabinet further includes an emergency water interface, which is connected to the water inlet pipe, and the emergency water interface is detachably connected to the emergency water tank. In some embodiments, the emergency water interface and the interface where the water inlet pipe connects to the tap water pipe can be the same interface. For sites without tap water conditions, an additional emergency water tank can be set up to replace the tap water pipe.

[0042] Figure 2 It is another exemplary schematic diagram of a water fire fighting power exchange cabinet according to some embodiments of this specification.

[0043] In some embodiments, Figure 2 As shown, there are multiple battery compartments 200, and the multiple battery compartments are arranged along the height direction of the power exchange cabinet body 100. By changing the overall layout of the battery compartment, the power exchange cabinet is made smaller, more stylish and beautiful, and has higher space utilization.

[0044] In some embodiments, the fire protection system further includes a fan, a smoke sensor and a temperature sensor. The fan is used to dissipate heat from the power exchange cabinet. The smoke sensor is used to detect the concentration of smoke in the power exchange cabinet. The temperature sensor is used to detect the temperature in the power exchange cabinet.

[0045] In some embodiments, the fan is arranged on the top or side of the battery exchange cabinet, or both the top and side surfaces. The smoke sensor is arranged inside the battery exchange cabinet. The temperature sensor is arranged in multiple battery compartments.

[0046] In some embodiments, when a fire occurs in the battery exchange cabinet, the fire protection system receives abnormal information from the smoke sensor or the temperature sensor, sends an alarm to the information input / output device, and controls the fire sprinkler 310 to spray tap water or antifreeze to complete the fire extinguishing. Exemplarily, the temperature sensor of a battery compartment detects that the temperature of the battery compartment is abnormal, but the smoke sensor data is normal, which indicates that the temperature of the battery compartment is too high, but it has not caught fire and needs to be cooled down; at this time, the fire protection system can increase the heat dissipation power of the fan and continuously monitor the temperature of the battery compartment. When the data of the smoke sensor and the temperature sensor of a battery compartment are both abnormal, it indicates that the temperature of the battery compartment is on fire, and the corresponding fire sprinkler needs to be turned on to extinguish the fire. The fire protection system receives abnormal information from the smoke sensor or the temperature sensor, sends an alarm to the information input / output device, and reminds the relevant technical personnel to perform subsequent processing (such as replacing the fire sprinkler after the fire is extinguished, maintenance, etc.).

[0047] In some embodiments of the present specification, by connecting the water inlet pipe to tap water, the water fire fighting power exchange cabinet only needs to be connected to tap water during installation, and no water replenishment is required; at the same time, there is no water tank in the water fire fighting power exchange cabinet, which can avoid the risk of electrical short circuit caused by water vapor evaporation; by providing an antifreeze tank and an emergency water interface, the water fire fighting power exchange cabinet can be used in venues with various conditions, thereby increasing its applicability.

[0048] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0049] At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined.

[0050] In addition, unless explicitly stated in the claims, the order of the processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not intended to limit the order of the processes and methods of this specification. Although the above disclosure discusses some invention embodiments that are currently considered useful through various examples, it should be understood that such details are only for illustrative purposes, and the attached claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this specification. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0051] Similarly, it should be noted that in order to simplify the description disclosed in this specification and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this specification, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this specification are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0052] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, etc., cited in this specification are hereby incorporated by reference in their entirety. Except for application history documents that are inconsistent with or conflicting with the contents of this specification, documents that limit the broadest scope of the claims of this specification (currently or later attached to this specification) are also excluded. It should be noted that if the descriptions, definitions, and / or use of terms in the materials attached to this specification are inconsistent or conflicting with the contents described in this specification, the descriptions, definitions, and / or use of terms in this specification shall prevail.

[0053] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. A water fire fighting power exchange cabinet, characterized in that: include: A power exchange cabinet body (100), a battery compartment (200) and a fire protection system; the battery compartment (200) is arranged inside the power exchange cabinet body (100); The fire protection system comprises a fire sprinkler (310), a water inlet pipe (320), a first branch pipe (321) and a second branch pipe (322); the fire sprinkler (310) is arranged on the top of the battery compartment (200); the water inlet pipe (320) is arranged outside the power exchange cabinet body (100), and the water inlet pipe (320) is connected to a tap water pipe (400); the water inlet pipe (320) is provided with a valve (330) and a water flow sensor (340); the valve (330) is configured to control the water inlet pipe (320) The water flow sensor (340) is configured to detect the water flow rate and flow velocity of the water inlet pipe (320) in order to connect and disconnect the water pipe (400); the first branch pipe (321) and the second branch pipe (322) are connected to the water inlet pipe (320); the first branch pipe (321) and the second branch pipe (322) are located downstream of the valve (330) and the water flow sensor (340); the first branch pipe (321) is connected to the fire sprinkler (310); and the second branch pipe (322) is connected to the drain pipe.

2. The water fire fighting power exchange cabinet according to claim 1 is characterized in that: The valve (330) is a ball valve or a pressure reducing valve.

3. The water fire fighting power exchange cabinet according to claim 1 is characterized in that: The height at which the water inlet pipe (320) is located is greater than or equal to the height at which the fire sprinkler (310) is located.

4. The water fire fighting power exchange cabinet according to claim 1 is characterized in that: The water fire fighting power exchange cabinet also includes a booster pump, and the booster pump is connected to the water inlet pipe (320).

5. The water fire fighting power exchange cabinet according to claim 1 is characterized in that: The second branch pipe (322) is provided with a solenoid valve (350).

6. The water fire fighting power exchange cabinet according to claim 5 is characterized in that: The water fire fighting power exchange cabinet also includes an antifreeze tank, which is connected to the water inlet pipe (320) via an antifreeze pipe, and an antifreeze valve is provided on the antifreeze pipe.

7. The water fire fighting power exchange cabinet according to claim 5 is characterized in that: The water fire fighting power exchange cabinet also includes an emergency water interface, which is connected to the water inlet pipe (320) and is detachably connected to the emergency water tank.

8. The water fire fighting power exchange cabinet according to claim 1 is characterized in that: There are multiple battery compartments (200), and the multiple battery compartments (200) are arranged along the height direction of the power exchange cabinet body (100).

9. The water fire fighting power exchange cabinet according to claim 5 is characterized in that: The fire protection system also includes a fan, a smoke sensor and a temperature sensor; The fan is arranged on the top and / or side of the power exchange cabinet body (100); The smoke sensor is arranged inside the power exchange cabinet body (100); The temperature sensor is arranged in a plurality of the battery compartments (200).

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