Explosion-proof device of liquid cooling energy storage cabinet

Abstract

The utility model discloses an explosion-proof device of a liquid cooling energy storage cabinet, which comprises a cabinet body, a partition plate is vertically arranged in the cabinet body to divide the cabinet body into a battery cavity and an installation cavity, a battery pack is installed in the battery cavity, and a sensor for monitoring the battery pack is installed in the battery cavity. An exhaust valve and an air inlet valve which are opened for ventilation and cooling when the battery pack breaks down are mounted on the side, located in the mounting cavity, of the partition plate, and a controller for receiving output signals of the sensor and controlling opening and closing of the exhaust valve and the air inlet valve is mounted in the mounting cavity. Whether the battery pack breaks down or not is judged according to the sensor, a generated fault signal is sent to the exhaust valve through the controller, and the exhaust valve starts and opens the valve after receiving the signal, so that smoke and heat in a battery cavity are quickly exhausted, explosion caused by energy accumulation is avoided, and the integrity of equipment can be guaranteed; and secondary harm and personal injury cannot be generated.

Description

TECHNICAL FIELD

[0001] The present patent application relates to the technical field of energy storage cabinets, in particular to an explosion-proof device of a liquid-cooled energy storage cabinet. BACKGROUND

[0002] With the continuous development of battery technology and the strong support of the state for battery and new energy technology, battery energy storage system devices have been more and more researched and applied. Under this background, a new energy storage form, i.e. battery energy storage cabinet, is born. In order to have higher energy storage efficiency, a more dense battery array is often used. During the charging and discharging process of the battery, heat release phenomenon occurs. If the heat cannot be effectively treated in a high-density space, heat accumulation occurs, and even worse, the energy storage cabinet explodes, causing damage to the energy storage cabinet.

[0003] Some devices in the current energy storage cabinet do not have a vent or an explosion vent device. Some energy storage cabinets only have an explosion vent window. Once the battery fails and catches fire, a large amount of smoke and heat is generated. Since the inside of the energy storage battery cabinet is sealed, the generated heat and smoke cannot be discharged, causing energy accumulation and explosion, which can cause personal injury. Some energy storage cabinets with explosion vent windows are also broken by the accumulated heat when the energy accumulates to a certain extent. This causes the cabinet body to have serious deformation, resulting in the entire cabinet body being scrapped and unable to be reused. Moreover, the explosion vent windows in the prior art are mostly installed on the outer wall of the energy storage cabinet. The exposed explosion vent window is exposed to the outside for a long time, which is easily affected by the external environment, resulting in reduced use performance and service life.

[0004] Therefore, in the energy storage cabinet, not only the temperature of the battery inside the cabinet body needs to be reduced, but also a mechanism that can release pressure when the battery fails is needed. Both of them work together to ensure the safety of the energy storage cabinet. CONTENT OF THE INVENTION

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present patent application is to provide an explosion-proof device of a liquid-cooled energy storage cabinet to solve the above-mentioned problems of the prior art.

[0006] To achieve the above-mentioned purpose, the present patent application provides the following technical solutions:

[0007] An explosion-proof device of a liquid-cooled energy storage cabinet, comprising a cabinet body, a partition plate is vertically arranged inside the cabinet body to divide the cabinet body into a battery cavity and a mounting cavity, a battery pack is installed in the battery cavity, a sensor for monitoring the battery pack is installed in the battery cavity, an exhaust valve and an air inlet valve for opening the air exchange and cooling when the battery pack fails are installed on one side of the partition plate in the mounting cavity, and a controller for receiving the output signal of the sensor and controlling the opening and closing of the exhaust valve and the air inlet valve is installed in the mounting cavity.

[0008] Preferably, a first cabinet door for opening and closing the battery cavity is installed on the cabinet body, and a second cabinet door for opening and closing the installation cavity is installed on the cabinet body at the front and rear sides of the installation cavity.

[0009] Preferably, a sealing ring that forms a sealing structure when the first cabinet door and the second cabinet door are closed is attached to the edge of the cabinet body.

[0010] Preferably, the exhaust valve is installed on the upper section of the side wall of the partition and close to the rear of the partition, and the intake valve is installed on the lower section of the side wall of the partition and close to the front of the partition.

[0011] Preferably, a first louver that allows the installation cavity to communicate with the outside is installed on the upper part of the second cabinet door close to the side of the exhaust valve, and a second louver that allows the installation cavity to communicate with the outside is installed on the lower part of the second cabinet door close to the side of the intake valve.

[0012] Preferably, the battery pack includes a plurality of battery clusters, and a support plate for placing the battery clusters is installed on the inner wall of the battery cavity, and a sensor is arranged on each battery cluster.

[0013] Preferably, a fire-fighting gas cylinder is further included, the fire-fighting gas cylinder is arranged in the installation cavity of the cabinet body, a solenoid valve is connected to the bottle mouth of the fire-fighting gas cylinder, a pipeline with the other end extending into the top of the battery cavity through the partition is connected to the outlet end of the solenoid valve, and the controller controls the opening and closing of the solenoid valve.

[0014] Preferably, a liquid cooling device that reduces the temperature inside the cabinet body after being started is installed in the cabinet body.

[0015] Preferably, the liquid cooling device includes a liquid cooling box installed in the installation cavity and a circulation pipeline arranged in the battery cavity, and the two ends of the circulation pipeline are connected to the water inlet and outlet of the liquid cooling box through the partition.

[0016] Compared with the prior art, the liquid cooling energy storage cabinet has the following beneficial effects: under normal operating conditions, the battery clusters are cooled by the liquid cooling device to reduce the temperature rise of the battery clusters, thereby prolonging the service life of the energy storage cabinet; the partition divides the cabinet body into a battery cavity and an installation cavity, and the exhaust valve and the intake valve are installed on the partition, which is inside the cabinet body and is not directly connected to the cabinet body, thereby avoiding the safety problems caused by the external placement of the exhaust valve and the intake valve;

[0017] According to the sensor, it is determined whether the battery pack has failed, and the generated fault signal is sent to the exhaust valve through the controller, the exhaust valve is started to open the valve after receiving the signal, thereby rapidly discharging the smoke and heat in the battery cavity, preventing energy accumulation and explosion, and preserving the integrity of the equipment, thereby preventing secondary damage and personal injury. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 is a schematic diagram of the utility model Figure 2 from the top;

[0021] Figure 4 is a schematic diagram of the controller and the fire gas cylinder assembly structure of the utility model;

[0022] Figure 5 is a schematic diagram of the cold water pipe structure of the utility model;

[0023] Figure 6 is a schematic diagram of the return water pipe structure of the utility model.

[0024] Explanation of reference numerals: cabinet body 1, first cabinet door 11, second cabinet door 12, sealing ring 13, partition plate 2, battery pack 3, sensor 4, exhaust valve 5, air inlet valve 6, controller 7, fire gas cylinder 8, liquid cooling device 9, liquid cooling tank 91, circulating pipeline 92, cold water pipe 921, return water pipe 922. DETAILED DESCRIPTION

[0025] The implementation manners of the patent application will be described below through specific, concrete examples, and other advantages and effects of the patent application can be easily understood by those skilled in the art from the disclosure of the specification. The patent application can also be implemented or applied through other different specific implementation manners, and each item of detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the patent application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0026] Please refer to Figures 1-6 , the utility model provides the following technical scheme:

[0027] An explosion-proof device of a liquid-cooled energy storage cabinet, please refer to Figure 1 and Figure 2, including cabinet 1 and the partition 2 vertically installed inside the cabinet 1, the partition 2 divides the cabinet 1 into a battery cavity and an installation cavity, the battery cavity is provided with a battery pack 3 and a plurality of sensors 4, the installation cavity is provided with an exhaust valve 5 and an air inlet valve 6 on one side of the partition 2 for opening the ventilation cooling when the battery pack 3 fails, and a controller 7 for receiving the output signals of the sensors 4 and controlling the opening and closing of the exhaust valve 5 and the air inlet valve 6. A fire extinguishing cylinder 8 is arranged in the installation cavity of the cabinet 1, the cylinder port of the fire extinguishing cylinder 8 is connected with a solenoid valve, the outlet end of the solenoid valve is connected with a pipeline which extends into the top of the battery cavity through the partition 2, when the battery pack 3 fails, the controller 7 controls the solenoid valve to open, and the fire extinguishing liquid in the fire extinguishing cylinder is sprayed to extinguish the battery pack 3.

[0028] In some examples, as shown in Figure 3 and Figure 4 , the controller 7 and the fire extinguishing cylinder 8 are installed on the same base plate, the two ends and the rear side of the base plate are bent upward, and the front end is bent downward, which improves the structural strength of the base plate; a positioning hole is formed in the bent part of the front end of the base plate, and the base plate is locked on the layer plate in the installation cavity through the positioning hole by a screw, so that the controller 7 and the fire extinguishing cylinder 8 can be installed on the base plate first, and then the base plate is pushed into the installation cavity for installation, which is convenient to operate and saves time.

[0029] The explosion-proof device of the liquid-cooled energy storage cabinet divides the cabinet 1 into a battery cavity and an installation cavity, when the smoke, temperature and pressure in the battery cavity are abnormal, the exhaust valve 5 and the air inlet valve 6 arranged in the installation cavity are opened, the smoke and heat can be quickly discharged, and explosion caused by energy accumulation can be avoided, which can protect the integrity of the equipment, solve the problem that the smoke and heat can be quickly discharged when the battery cabinet fails and catches fire, and secondary harm or personal injury can be avoided. At the same time, the exhaust valve 5 and the air inlet valve 6 are arranged on the side wall of the partition 2 in the installation cavity, which reduces the opening holes on the outer periphery of the cabinet 1, and the tightness of the battery cavity is better.

[0030] In some examples, referring to Figure 1 and Figure 2 , a first cabinet door 11 for opening and closing the battery cavity is installed on the cabinet 1, a second cabinet door 12 for opening and closing the installation cavity is installed on the cabinet 1 at the front and rear sides of the installation cavity, and a sealing ring 13 for forming a sealing structure when the first cabinet door 11 and the second cabinet door 12 are closed is attached to the edge of the cabinet 1, so that the first cabinet door 11 or the second cabinet door 12 forms a seal with the inner cavity of the cabinet 1 when it is closed.

[0031] It should be noted that in the battery cavity, the battery pack 3 includes several battery clusters, and the inner wall of the battery cavity is provided with a support plate for placing the battery clusters corresponding to the battery clusters. Each battery cluster is provided with a sensor 4, and the sensor 4 is an HT-BFC-C16-A type sensor. The sensor 4 is a three-in-one sensor, which includes monitoring the temperature, pressure and smoke concentration of the battery cluster in the battery cavity, real-time detecting the state of each part inside the battery cavity, and having high monitoring accuracy.

[0032] In some examples, referring to Figure 2 In the installation cavity, the exhaust valve 5 is installed on the upper segment of the side wall of the partition plate 2 and close to the rear of the partition plate 2, and the air inlet valve 6 is installed on the lower segment of the side wall of the partition plate 2 and close to the front of the partition plate 2. The exhaust valve 5 is an FVV-A-E-150 type exhaust valve, the air inlet valve 6 is an FVV-A-E-150FS type air inlet valve, the controller 7 is a KZ02-ZC type controller, and the upper part of the second cabinet door 12 close to one side of the exhaust valve 5 is provided with a first louver for connecting the installation cavity with the outside. The lower part of the second cabinet door 12 close to one side of the air inlet valve 6 is provided with a second louver for connecting the installation cavity with the outside. The louver is beneficial to the circulation between the installation cavity and the outside. In this embodiment, the louver can also be changed to a through hole for connecting the installation cavity with the outside.

[0033] It should be noted that the sensor 4, the exhaust valve 5, the air inlet valve 6, the controller 7, the electromagnetic valve and the like are all products familiar to those skilled in the art, and their functions and working principles belong to the public knowledge and will not be described here.

[0034] In this embodiment, as shown in Figure 1 The cabinet body 1 is provided with a liquid cooling device 9 for reducing the temperature inside the cabinet body 1 after starting. Specifically, the liquid cooling device 9 includes a liquid cooling box 91 installed in the installation cavity and a circulating pipeline 92 arranged in the battery cavity. The two ends of the circulating pipeline 92 are connected with the water inlet and outlet of the liquid cooling box 91 through the partition plate 2.

[0035] In some examples, as shown in Figure 1 and Figure 2 A plurality of horizontal layer plates are arranged in the installation cavity. The controller 7 and the fire extinguishing cylinder 8 are first installed on the base plate, and then the base plate is installed on the upper layer plate. The liquid cooling box 91 is arranged on the middle layer plate, as shown in Figure 5 and Figure 6As shown, the circulating pipeline 92 includes a cold water pipe 921 and a return water pipe 922 vertically arranged at both sides of the front end inside the battery cavity. A liquid cooling plate is arranged below each battery cluster. The cold water pipe 921 and the return water pipe 922 are provided with a plurality of branch pipes in communication with the water inlets and outlets of the liquid cooling plates. The cold liquid in the liquid cooling tank 91 is circulated to form liquid cooling and temperature reduction for the battery cluster. Here, a liquid pump is arranged in the liquid cooling tank 91 to drive the circulation of the cold liquid. The lower layer plate is provided with a switch control cabinet, a circuit breaker and the like. This part is well known to those skilled in the art and belongs to the public common knowledge, which will not be described here.

[0036] It should be noted that in the present embodiment, the PCS device is externally hung on the side wall of the cabinet 1, saving the space of the energy storage cabinet.

[0037] The above embodiments only exemplarily illustrate the principles and effects of the present patent application, and are not used to limit the present patent application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present patent application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present patent application should be covered by the claims of the present patent application.

Claims

1. An explosion-proof device for a liquid-cooled energy storage cabinet, characterized in that, The cabinet includes a cabinet (1), and a partition (2) is arranged vertically inside the cabinet (1) to divide the cabinet (1) into a battery cavity and an installation cavity. A battery pack (3) is installed in the battery cavity, and a sensor (4) for monitoring the battery pack (3) is installed in the battery cavity. An exhaust valve (5) and an intake valve (6) are installed on the side of the partition (2) located in the installation cavity to open for ventilation and cooling when the battery pack (3) fails. A controller (7) is installed in the installation cavity to receive the output signal of the sensor (4) and to control the opening and closing of the exhaust valve (5) and the intake valve (6).

2. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 1, characterized in that, The cabinet (1) is equipped with a first cabinet door (11) for opening and closing the battery compartment, and the cabinet (1) is equipped with a second cabinet door (12) for opening and closing the installation compartment on the front and rear sides of the installation compartment.

3. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 2, characterized in that, The edge of the cabinet (1) is fitted with a sealing ring (13) that forms a sealing structure when the first cabinet door (11) and the second cabinet door (12) are closed.

4. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 2, characterized in that, The exhaust valve (5) is installed on the upper section of the side wall of the partition (2) and near the rear of the partition (2), and the intake valve (6) is installed on the lower section of the side wall of the partition (2) and near the front of the partition (2).

5. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 4, characterized in that, A first louver is installed on the upper part of the second cabinet door (12) near the exhaust valve (5) to connect the mounting cavity with the outside, and a second louver is installed on the lower part of the second cabinet door (12) near the air inlet valve (6) to connect the mounting cavity with the outside.

6. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 1, characterized in that, The battery pack (3) includes several battery clusters. The inner wall of the battery cavity is equipped with a support plate that corresponds to the battery clusters and is used to place the battery clusters. Each battery cluster is equipped with a sensor (4).

7. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 1, characterized in that, It also includes a fire-fighting gas cylinder (8), which is installed in the mounting cavity of the cabinet (1). The cylinder mouth of the fire-fighting gas cylinder (8) is connected to a solenoid valve. The outlet end of the solenoid valve is connected to a pipe that extends through the partition (2) and into the top of the battery cavity. The controller (7) controls the opening and closing of the solenoid valve.

8. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 6, characterized in that, The cabinet (1) is equipped with a liquid cooling device (9) that reduces the internal temperature of the cabinet (1) after startup.

9. The explosion-proof device for the liquid-cooled energy storage cabinet according to claim 8, characterized in that, The liquid cooling device (9) includes a liquid cooling box (91) installed in the mounting cavity and a circulation pipe (92) installed in the battery cavity. Both ends of the circulation pipe (92) pass through the partition (2) and are connected to the inlet and outlet of the liquid cooling box (91).

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