Energy storage battery box capable of automatically disconnecting circuit

Abstract

The utility model discloses an energy storage battery box capable of automatically disconnecting a circuit, which comprises a box body, a plurality of battery cabins for mounting batteries are arranged in the box body, mounting plates are arranged at the bottoms of the battery cabins, and power connection parts matched with electrodes of the batteries are arranged at the tops of the mounting plates. A first contact part electrically connected with the power connection part is arranged at the bottom of the mounting plate, a second contact part connected with the charging and discharging circuit is arranged at the bottom of the battery bin, the first contact part is matched with the second contact part, a fire extinguishing device is arranged in an inner cavity of the bottom of the box body, and a nozzle of the fire extinguishing device faces the lower portion of the mounting plate. According to the utility model, the problem that the energy storage battery is troublesome to mount and dismount is solved, and the charge-discharge circuit where the battery is located can be timely disconnected when thermal runaway of the battery occurs.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage battery boxes, in particular to an energy storage battery box capable of automatically disconnecting a circuit. Background Art

[0002] Currently, it is very troublesome to replace the batteries inside the energy storage boxes on the market after they are installed in the box. It is necessary to remove the connected circuits, open the box, and then disassemble the connected batteries, replace the batteries that need to be replaced and then install them. This leads to high installation and subsequent maintenance costs of the energy storage batteries.

[0003] Energy storage batteries usually have a BMS (battery management system). When the battery has thermal runaway, the BMS can shut down the battery circuit to cut off the power to the battery, preventing the battery from continuing to overcharge and causing the fire in the energy storage box to further increase. However, when an actual fire occurs, the BMS system has been damaged when the battery temperature rises, and the control system cannot cut off the power to the battery in time, which will also bring huge hidden dangers. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide an energy storage battery box that can automatically disconnect the circuit, solve the problem of inconvenient installation and removal of the energy storage battery, and can promptly disconnect the charging and discharging circuit where the battery is located when thermal runaway occurs in the battery.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a storage battery box that can automatically disconnect the circuit, including a box body, wherein a plurality of battery compartments for installing batteries are provided in the box body, a mounting plate is provided at the bottom of the battery compartment, a power connection part that cooperates with the electrode of the battery is provided on the top of the mounting plate, a first contact part electrically connected to the power connection part is provided at the bottom of the mounting plate, a second contact part connected to the charging and discharging circuit is provided at the bottom of the battery compartment, the first contact part and the second contact part cooperate, and a fire extinguishing device is provided in the inner cavity at the bottom of the box body, and the nozzle of the fire extinguishing device faces below the mounting plate.

[0006] Preferably, the battery is placed upside down in the battery compartment, and the electrodes are in contact with the power connection part.

[0007] Preferably, a mounting slot matching the battery surface is provided on the top of the mounting plate.

[0008] Preferably, a limiting column is provided at the bottom of the mounting plate, a limiting slot is provided at the bottom of the battery compartment, the first contact portion is provided at the outside of the limiting column, the second contact portion is provided at the inside of the limiting slot, and the limiting column and the limiting slot are slidably matched.

[0009] More preferably, a spring is provided in the limiting groove, and the top of the spring contacts the bottom of the limiting column.

[0010] More preferably, the first contact portion is a convex structure on the outer side of the limiting column, and the second contact portion is a concave structure on the inner side of the limiting groove, and the convex structure and the concave structure are consistent with each other.

[0011] More preferably, a limiting column is provided at the center of the bottom of the mounting plate, a limiting groove is provided at the center of the bottom of the battery compartment, and a fire extinguishing device is provided in the inner cavities on both sides of the bottom of the battery compartment.

[0012] Preferably, the fire extinguishing device is a perfluorohexanone fire extinguishing device or an aerosol fire extinguishing device, or a combination of the two.

[0013] Preferably, a through hole corresponding to the nozzle is opened at the top of the inner cavity at the bottom of the box body, and the through hole and the nozzle are facing downward of the mounting plate.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model solves the problem of troublesome installation and disassembly of energy storage batteries, and can promptly disconnect the charging and discharging circuit where the battery is located when thermal runaway occurs in the battery.

[0016] 2. When the fire extinguishing material is ejected upward along the nozzle and the through hole to impact the mounting plate, the first contact portion is separated from the second contact portion, and finally the battery electrode is disconnected from the charging and discharging circuit. The above process disconnects the charging and discharging circuit where the battery is located in time, preventing the battery from continuing to charge and discharge and causing thermal runaway to expand;

[0017] 3. When the utility model is extinguishing a fire, the fire extinguishing material enters the battery surface along the gap between the mounting plate and the inner side of the battery compartment, filling the entire battery compartment where the thermal runaway battery is located, forming a full flooding fire extinguishing process, which greatly improves the fire extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an energy storage battery box that can automatically disconnect the circuit;

[0019] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0020] Figure 3 for Figure 2 AA cross-sectional structural diagram;

[0021] Figure 4 for Figure 3 An enlarged structural diagram of the area where one of the batteries is located (the first contact portion and the second contact portion are in a separated state). DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 4 As shown, an energy storage battery box capable of automatically disconnecting a circuit comprises a box body 1, wherein a plurality of battery compartments 3 for installing batteries 2 are arranged in the box body 1, a mounting plate 4 is arranged at the bottom of the battery compartment 3, a power connection portion 5 cooperating with the electrode 2.1 of the battery 2 is arranged at the top of the mounting plate 4, a first contact portion 6 electrically connected to the power connection portion 5 is arranged at the bottom of the mounting plate 4, a second contact portion 7 connected to a charging and discharging circuit is arranged at the bottom of the battery compartment 3, the first contact portion 6 cooperates with the second contact portion 7, a fire extinguishing device 8 is arranged in the inner cavity at the bottom of the box body 1, and a nozzle 8.1 of the fire extinguishing device 8 faces below the mounting plate 4. In this embodiment, the first contact portion 6 is electrically connected to the power connection portion 5, that is, through a wire connection.

[0024] Preferably, the battery 2 is placed upside down in the battery compartment 3, and the electrode 2.1 is in contact with the power connection portion 5. After the battery 2 is placed upside down, the first contact portion 4 of the lower mounting plate 4 can be connected to the second contact portion 7 by pressing the battery 2, and the first contact portion 4 of the lower mounting plate 4 can be separated from the second contact portion 7 by pulling the battery 2, which is convenient for the entire battery installation and removal process.

[0025] Preferably, a mounting slot 4.1 is provided on the top of the mounting plate 4 to match the surface of the battery 2. This design facilitates the installation process of the battery 2 and the mounting plate 4. During installation, the battery 2 only needs to be installed in the mounting slot 4.1 of the mounting plate 4 to complete the entire installation process. More preferably, the mounting slot 4.1 and the surface of the battery 2 can be installed in an interference fit manner, and the installation and removal processes are relatively convenient.

[0026] Preferably, a limiting column 4.2 is provided at the bottom of the mounting plate 4, a limiting groove 3.1 is provided at the bottom of the battery compartment 3, the first contact portion 6 is provided at the outside of the limiting column 4.2, the second contact portion 7 is provided at the inside of the limiting groove 3.1, and the limiting column 4.2 and the limiting groove 3.1 are slidably matched. Through the slidably matched process of the limiting column 4.2 and the limiting groove 3.1, the mounting plate 4 can be made more stable during the downward and upward movement process, so that the disassembly and assembly process is more efficient.

[0027] More preferably, a spring 3.2 is provided in the limit groove 3.1, and the top of the spring 3.2 contacts the bottom of the limit column 4.2. In this embodiment, the spring 3.2 can play two roles: first, in the process of the mounting plate 4 moving downward, it forms a buffer for the mounting plate 4 to prevent the mounting plate 4 from directly hitting the bottom of the battery compartment 3 and causing damage; second, in the fire extinguishing stage, when the mounting plate 4 is impacted by the airflow of the fire extinguishing material, the elastic force of the spring 3.2 can form an assisting force during the upward movement of the mounting plate 4, so that it can move upward quickly, thereby quickly separating the first contact portion 4 from the second contact portion 7; in addition, it should be noted that in this embodiment, in the stage of normal battery storage, the elastic force of the spring 3.2 is smaller than the binding force of the first contact portion 4 and the second contact portion 7, so as to prevent the first contact portion 4 from being separated from the second contact portion 7 by mistake due to the elastic force of the spring 3.2.

[0028] More preferably, the first contact portion 6 is a convex structure on the outside of the limiting column 4.2, and the second contact portion 7 is a concave structure on the inside of the limiting groove 3.1, and the convex structure and the concave structure match each other. In this way, a snap-on method can be formed. When the limiting column 4.2 moves down to a certain position in the limiting groove 3.1, the convex structure of the first contact portion 6 can enter the concave structure of the second contact portion 7 to realize the connection process of the charging and discharging circuit, and when the limiting column 4.2 moves up in the limiting groove 3.1, the convex structure of the first contact portion 6 can leave the concave structure of the second contact portion 7 to realize the disconnection process of the charging and discharging circuit. In addition, as a preferred method, the outer diameter of the limiting column 4.2 is consistent with the inner diameter of the limiting groove 3.1. At this time, the limiting column 4.2 is made of elastic material (such as rubber), and the limiting groove 3.1 is made of rigid material, so that the limiting column 4.2 and the convex first contact portion 6 can move up and down in the limiting groove 3.1.

[0029] More preferably, a limiting column 4.2 is provided at the center of the bottom of the mounting plate 4, a limiting groove 3.1 is provided at the center of the bottom of the battery compartment 3, and a fire extinguishing device 8 is provided in the inner cavity on both sides of the bottom of the battery compartment 3. This design has two functions: first, the two fire extinguishing devices 8 can effectively reduce the probability of failure to start the fire extinguishing device when thermal runaway occurs in the battery compartment 3, because the probability of two fire extinguishing devices 8 failing at the same time is very low; second, the two fire extinguishing devices 8 are located on both sides, and when the fire extinguishing agent in the two fire extinguishing devices generates fire extinguishing substances, the impact force on the upper mounting plate 4 can be balanced, and the mounting plate 4 will not be skewed.

[0030] Preferably, the fire extinguishing device 8 is a perfluorohexanone fire extinguishing device or an aerosol fire extinguishing device, or a combination of the two. In this embodiment, both the perfluorohexanone fire extinguishing device and the aerosol fire extinguishing device are relatively mature fire extinguishing devices on the market, which are suitable for the fire extinguishing process inside the battery box; taking the aerosol fire extinguishing device as an example, an aerosol fire extinguishing agent (generally in the form of a powder column) can be set inside it, and then the starting process is controlled by the starting component; when the starting component is a thermal wire structure, when a fire occurs outside, the flame can directly ignite the thermal wire, thereby igniting the aerosol fire extinguishing agent; when the starting component is an electric ignition head structure, it is connected to the fire detection device, and the fire detection device is a temperature sensor and / or a smoke sensor. When a fire, overheating, etc. occurs, the fire detection device detects that a high temperature environment is generated in the battery compartment due to the fire, and sends a signal to the microprocessor, and the microprocessor controls the electronic ignition head of the starting component to ignite, thereby igniting the aerosol fire extinguishing agent, releasing the aerosol fire extinguishing substance, and participating in the fire extinguishing process.

[0031] Preferably, a through hole 1.1 corresponding to the nozzle 8.1 is opened at the top of the inner cavity at the bottom of the box body 1, and the through hole 1.1 and the nozzle 8.1 face downward of the mounting plate 4.

[0032] The above technical solution can simplify the installation and removal process of energy storage batteries:

[0033] When the battery needs to be installed, it is only necessary to first install the battery 2 into the installation slot 4.1 of the installation plate 4, at which time the power connection part 5 of the installation plate 4 contacts and cooperates with the electrode 2.1 of the battery 2, and then the entire battery 2 and the installation plate 4 are inverted and placed downward into the battery compartment 3, wherein the limiting column 4.2 is aligned with the limiting slot 3.1 to play a guiding role. When the limiting column 4.2 moves down to a certain position in the limiting slot 3.1, the first contact part 6 and the second contact part 7 complete the clamping process, and finally the battery 2 can complete the connection process with the charging and discharging circuit;

[0034] When the battery needs to be removed, it is only necessary to apply a certain force upward to pull the battery 2 so that the mounting plate 4 drives the limiting column 4.2 to leave the limiting groove 3.1, and the first contact portion 6 and the second contact portion 7 are separated (such as Figure 4 As shown), the battery 2 is disconnected from the charging and discharging circuit, the entire battery 2 and the mounting plate 4 are pulled out, and then the battery 2 and the mounting plate 4 are separated to complete the disassembly process.

[0035] In addition, the utility model also discloses a fire extinguishing method for the energy storage battery box with automatic circuit disconnection, which comprises the following steps:

[0036] S1. When the battery 2 in the battery compartment 3 in the box 1 has thermal runaway, the starting component of the fire extinguishing device 8 in the corresponding battery compartment 3 starts and ignites the internal fire extinguishing agent, and the fire extinguishing agent produces fire extinguishing substances and then sprays out from its nozzle 8.1;

[0037] S2, the fire extinguishing substance is sprayed upward along the nozzle 8.1 and the through hole 1.1, and then impacts the mounting plate 4. After being impacted, the mounting plate 4 moves upward, so that the first contact portion 6 leaves the second contact portion 7;

[0038] S3, such as Figure 4 As shown, after the first contact portion 6 leaves the second contact portion 7, the first contact portion 6 at the bottom of the mounting plate 4 is disconnected from the charging and discharging circuit at the bottom of the battery compartment 3, that is, the power connection portion 5 at the top of the mounting plate 4 is disconnected from the charging and discharging circuit at the bottom of the battery compartment 3, and finally the electrode 2.1 of the battery 2 is disconnected from the charging and discharging circuit. The above process disconnects the charging and discharging circuit where the battery 2 is located in time, preventing the battery 2 from continuing to charge and discharge and causing thermal runaway to expand;

[0039] S4, the fire extinguishing material enters the surface of the battery 2 along the gap between the mounting plate 4 and the inner side of the battery compartment 3, filling the entire battery compartment 3 where the thermal runaway battery 2 is located, forming a full flooding fire extinguishing process.

[0040] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An energy storage battery box capable of automatically disconnecting a circuit, comprising a box body (1), wherein the box body (1) is provided with a plurality of battery compartments (3) for installing batteries (2), characterized in that: A mounting plate (4) is provided at the bottom of the battery compartment (3); a power connection portion (5) cooperating with an electrode (2.1) of the battery (2) is provided at the top of the mounting plate (4); a first contact portion (6) electrically connected to the power connection portion (5) is provided at the bottom of the mounting plate (4); a second contact portion (7) connected to a charging and discharging circuit is provided at the bottom of the battery compartment (3); the first contact portion (6) and the second contact portion (7) cooperate; a fire extinguishing device (8) is provided in the inner cavity at the bottom of the box body (1); a nozzle (8.1) of the fire extinguishing device (8) faces below the mounting plate (4).

2. The energy storage battery box capable of automatically disconnecting the circuit according to claim 1, characterized in that: The battery (2) is placed upside down in the battery compartment (3), and the electrode (2.1) is in contact with the power connection part (5).

3. The energy storage battery box capable of automatically disconnecting the circuit according to claim 1, characterized in that: The top of the mounting plate (4) is provided with a mounting slot (4.1) that matches the surface of the battery (2).

4. The energy storage battery box capable of automatically disconnecting the circuit according to claim 1, characterized in that: A limiting column (4.2) is provided at the bottom of the mounting plate (4), a limiting slot (3.1) is provided at the bottom of the battery compartment (3), the first contact portion (6) is provided on the outside of the limiting column (4.2), and the second contact portion (7) is provided on the inside of the limiting slot ( 3.1), the limiting column (4.2) and the limiting groove (3.1) are slidably matched.

5. The energy storage battery box capable of automatically disconnecting the circuit according to claim 4, characterized in that: A spring (3.2) is arranged in the limiting groove (3.1), and the top of the spring (3.2) contacts the bottom of the limiting column (4.2).

6. The energy storage battery box capable of automatically disconnecting the circuit according to claim 4, characterized in that: The first contact portion (6) is in the form of a convex structure on the outside of the limiting column (4.2), and the second contact portion (7) is in the form of a concave structure on the inside of the limiting groove (3.1), and the convex structure and the concave structure match each other.

7. The energy storage battery box capable of automatically disconnecting the circuit according to claim 4, characterized in that: A limiting column (4.2) is provided at the center of the bottom of the mounting plate (4), a limiting groove (3.1) is provided at the center of the bottom of the battery compartment (3), and a fire extinguishing device (8) is provided in the inner cavities on both sides of the bottom of the battery compartment (3).

8. The energy storage battery box capable of automatically disconnecting a circuit according to claim 1, characterized in that: The fire extinguishing device (8) is a perfluorohexanone fire extinguishing device or an aerosol fire extinguishing device, or a combination of the two.

9. The energy storage battery box capable of automatically disconnecting a circuit according to claim 1, characterized in that: A through hole (1.1) corresponding to the nozzle (8.1) is provided at the top of the inner cavity at the bottom of the box body (1), and the through hole (1.1) and the nozzle (8.1) face downwardly of the mounting plate (4).

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