Suction type battery box safety detection device

Abstract

The utility model discloses a safety detection device for a suction type battery box, and the device comprises a monitoring mechanism which comprises a box body, a first partition plate, a fan, a main control board, and a sensor assembly. The first partition plate is vertically installed in the box body and divides the interior of the box body into a horizontally-arranged U-shaped flow channel, an air inlet is formed in the position, corresponding to one end of the U-shaped flow channel, of the box body, and an air outlet is formed in the position, corresponding to the other end of the U-shaped flow channel, of the box body. The fan is mounted in the U-shaped flow channel close to the air inlet and can suck air into the U-shaped flow channel from the air inlet; the main control board is mounted in the box body; the sensor assembly is installed in the U-shaped flow channel and electrically connected with a control circuit on the main control board. According to the utility model, airflow can stably flow through each sensor without impurities, and thermal runaway monitoring and early warning can be timely and accurately carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of battery box safety monitoring equipment, in particular to a suction-type battery box safety detection device. Background Art

[0002] Existing battery box safety detectors generally rely on the flow of airflow during thermal runaway to enable each detection sensor to detect the thermal runaway parameters in the gas. Therefore, it takes a certain amount of time for the gas generated from the initial stage of the fire to diffuse into each detection sensor, so it is impossible to monitor and alarm the fire in a timely manner. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model proposes a suction-type battery box safety detection device.

[0004] The utility model proposes a suction-type battery box safety detection device, comprising: a monitoring mechanism, the monitoring mechanism comprising a box body, a first partition, a fan, a main control board and a sensor assembly; the first partition is vertically installed inside the box body and divides the inside of the box body into a horizontally arranged U-shaped flow channel, the box body is provided with an air inlet at one end corresponding to the U-shaped flow channel, and the box body is provided with an air outlet at the other end corresponding to the U-shaped flow channel;

[0005] The fan is installed in the U-shaped flow channel close to the air inlet, and can suck the gas from the air inlet into the U-shaped flow channel; the main control board is installed inside the box;

[0006] The sensor assembly includes a carbon monoxide detection sensor, a smoke detection sensor and a temperature detection sensor. The smoke detection sensor, the carbon monoxide detection sensor and the temperature detection sensor are installed in the U-shaped flow channel in sequence along the flow direction of the gas and are all electrically connected to the control circuit on the main control board.

[0007] Preferably, a gas flow sensor is also included, the detection end of the gas flow sensor is located in the U-shaped flow channel close to the gas outlet, and the gas flow sensor is electrically connected to the control circuit on the main control board.

[0008] Preferably, the middle of the U-shaped flow channel is also filled with a porous flow stabilizing structure for stabilizing the flow, and the smoke detection sensor, the carbon monoxide detection sensor and the temperature detection sensor are all located in the U-shaped flow channel close to the air inlet.

[0009] Preferably, a dustproof net is provided in the air inlet.

[0010] Preferably, it also includes a second partition, which is horizontally installed inside the box body. The second partition divides the inside of the box body into a first chamber and a second chamber arranged in sequence from top to bottom, and the first chamber and the second chamber are sealed and independent; the first partition is vertically installed inside the second chamber and divides the inside of the second chamber into a U-shaped flow channel; the main control board and each sensor are installed in the first chamber, and the detection end of each sensor passes through the second partition from the first chamber and extends into the second chamber, and each sensor is sealed and connected to the second partition.

[0011] Preferably, it also includes a power supply, which is electrically connected to the main control board.

[0012] Preferably, the box body comprises a lower box body with an open top and a box cover for covering the open top, the box cover is detachably and sealedly fixedly connected to the lower box body, and the second partition is sealedly and fixedly connected to the box cover to form a first chamber.

[0013] Preferably, it also includes a pipeline mechanism, which includes an intake pipe, a three-way solenoid valve, a main pipe and multiple branch pipes; one end of the multiple branch pipes is used to communicate with the interior of the multiple battery packs one by one, and the other ends of the multiple branch pipes are respectively connected with one end of the main pipe, the other end of the main pipe is connected with the air inlet of the three-way solenoid valve, the first air outlet of the three-way solenoid valve is connected with one end of the intake pipe, the other end of the intake pipe is connected with the air inlet, and the second air outlet of the three-way valve is used to communicate with the liquid outlet of the thermal runaway suppression mechanism.

[0014] Preferably, a thermal runaway suppression mechanism is further included, and the second gas outlet of the three-way valve is communicated with the liquid outlet of the thermal runaway suppression mechanism.

[0015] Preferably, a host computer is also included, and the monitoring mechanism, the pipeline mechanism and the thermal runaway suppression mechanism are electrically connected to the controller respectively.

[0016] In the utility model, the proposed suction-type battery box safety detection device divides the interior of the box into a horizontally arranged U-shaped flow channel through a first partition, and accelerates the gas to be sucked into the U-shaped flow channel from the air inlet through a fan, and then detects the gas through a carbon monoxide detection sensor, a smoke detection sensor and a temperature detection sensor installed in the middle of the U-shaped flow channel in sequence along the flow direction of the gas, ensuring that the airflow can flow through each sensor smoothly and without impurities, ensuring that thermal runaway monitoring and early warning can be carried out in a timely and accurate manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a suction-type battery box safety detection device in one embodiment of the present utility model.

[0018] Figure 2 This is an electrical schematic diagram of a suction-type battery box safety detection device in another embodiment of the present invention. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] Reference Figure 1 The utility model proposes a suction-type battery box safety detection device, comprising: a monitoring mechanism, the monitoring mechanism comprising a box body 1, a first partition plate 4, a fan 2, a main control board 3 and a sensor assembly; the first partition plate 4 is vertically installed inside the box body 1 and divides the inside of the box body 1 into a horizontally arranged U-shaped flow channel, the box body 1 is provided with an air inlet at one end corresponding to the U-shaped flow channel, and the box body 1 is provided with an air outlet at the other end corresponding to the U-shaped flow channel;

[0021] The fan 2 is installed in the U-shaped flow channel close to the air inlet, and can suck the gas from the air inlet into the U-shaped flow channel; the main control board 3 is installed inside the box 1;

[0022] The sensor assembly includes a carbon monoxide detection sensor, a smoke detection sensor and a temperature detection sensor. The smoke detection sensor, the carbon monoxide detection sensor and the temperature detection sensor are installed in the U-shaped flow channel in sequence along the flow direction of the gas and are all electrically connected to the control circuit on the main control board 3.

[0023] The utility model divides the interior of the box body 1 into a horizontally arranged U-shaped flow channel through a first partition plate 4, accelerates the gas to be sucked into the U-shaped flow channel from the air inlet through a fan 2, and then detects the gas through a carbon monoxide detection sensor, a smoke detection sensor and a temperature detection sensor installed in sequence in the middle of the U-shaped flow channel along the flow direction of the gas, ensuring that the airflow can flow through each sensor smoothly and without impurities, ensuring that thermal runaway monitoring and early warning can be carried out in a timely and accurate manner.

[0024] Since the fluidity of the external pipeline of the monitoring mechanism directly determines the product's air intake capacity, thus affecting the monitoring and early warning of thermal runaway, it is necessary to automatically check the rupture and blockage of the pipeline.

[0025] In order to solve this problem, in this embodiment, a gas flow sensor 5 is also included. The detection end of the gas flow sensor 5 is located in the U-shaped flow channel close to the gas outlet. The gas flow sensor 5 is electrically connected to the control circuit on the main control board 3.

[0026] In this embodiment, a gas flow sensor 5 is arranged at the gas outlet. When the gas flow is detected to be higher or lower than the normal value to a certain extent, the main control board 3 will feedback the fault so as to facilitate timely maintenance.

[0027] Specifically, the gas flow sensor 5 is installed in the first chamber.

[0028] In a further embodiment, the middle part of the U-shaped flow channel is also filled with a porous flow stabilizing structure 6 for stabilizing the flow. The smoke detection sensor, carbon monoxide detection sensor and temperature detection sensor are all located in the U-shaped flow channel close to the air inlet, so that the gas flow sensor 5 can detect the air flow accurately.

[0029] The porous flow stabilizing structure 6 is made of a porous plate, sponge or porous fiber material.

[0030] In this embodiment, a power supply is also included, and the power supply is electrically connected to the main control board 3 to supply power to the main control board 3 and each sensor.

[0031] In a further embodiment, the box body 1 includes a lower box body with an open top and a box cover for covering the open top, the box cover is detachably and sealedly fixedly connected to the lower box body, and the second partition is sealedly and fixedly connected to the box cover to form a first chamber.

[0032] When the box cover is detachably sealed and fixedly connected to the lower box body, a second chamber is formed between the second partition plate and the lower box body, which facilitates disassembly and cleaning of dust in the second chamber.

[0033] In this embodiment, the main control board 3 is also connected to a communication line for data interaction with a host computer.

[0034] In this embodiment, a dustproof net is provided in the air inlet to prevent large particles of impurities from entering the interior of the box body 1.

[0035] In order to prevent particles in the gas from affecting the electrical performance and heat dissipation performance of each electrical component, in this embodiment, a second partition is also included. The second partition is horizontally installed inside the box body 1, and the second partition divides the inside of the box body 1 into a first chamber and a second chamber arranged from top to bottom, and the first chamber and the second chamber are sealed and independent; the first partition 4 is vertically installed inside the second chamber and divides the inside of the second chamber into a U-shaped flow channel; the main control board 3 and each sensor are installed in the first chamber, and the detection end of each sensor passes through the second partition from the first chamber and extends into the second chamber, and each sensor is sealed and connected to the second partition.

[0036] like Figure 2 As shown, in this embodiment, a pipeline mechanism is also included, which includes an intake pipe, a three-way solenoid valve, a main pipe and multiple branch pipes; one end of the multiple branch pipes is used to communicate with the interior of the multiple battery packs one by one, and the other ends of the multiple branch pipes are respectively connected to one end of the main pipe, and the other end of the main pipe is connected to the air inlet of the three-way solenoid valve. The first air outlet of the three-way solenoid valve is connected to one end of the intake pipe, and the other end of the intake pipe is connected to the air inlet. The second air outlet of the three-way valve is used to communicate with the liquid outlet of the thermal runaway suppression mechanism.

[0037] With such an arrangement, the present embodiment can draw the gases in multiple battery packs into the main pipe and the air intake pipe and into the U-shaped flow channel for monitoring, thereby detecting the subtle characteristics of the early stage of thermal runaway of the battery cell, achieving early warning, and sharing of the main pipe and the branch pipe, thus simplifying the structure and reducing costs.

[0038] In a further embodiment, a thermal runaway suppression mechanism is further included, and the second gas outlet of the three-way valve is connected to the liquid outlet of the thermal runaway suppression mechanism.

[0039] In a further embodiment, a host computer is also included, and the monitoring mechanism, the pipeline mechanism and the thermal runaway suppression mechanism are electrically connected to the controller respectively.

[0040] During specific implementation, each sensor collects relevant parameters and uploads the relevant parameters to the main control board 3. The main control board 3 makes a composite judgment based on the preset thermal runaway alarm strategy, and sends out corresponding first-level, second-level, and third-level alarm signals, and transmits the corresponding first-level, second-level, and third-level alarm signals to the upper computer through the communication line; when the third-level alarm is reached, the upper computer will control the three-way solenoid valve of the monitoring mechanism to shut down the fan 2 and the intake pipe, and open the pipeline between the thermal runaway suppression mechanism and the battery pack, and control the thermal runaway suppression mechanism to suppress thermal runaway, that is, extinguish the fire. At this time, the main pipe and the branch pipe are used as fire extinguishing agent infusion pipelines to provide a channel for the spraying of the fire extinguishing agent.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A suction-type battery box safety detection device, characterized in that: include: A monitoring mechanism, the monitoring mechanism comprising a box (1), a first partition (4), a fan (2), a main control board (3) and a sensor assembly; the first partition (4) is vertically installed inside the box (1) and divides the inside of the box (1) into a horizontally arranged U-shaped flow channel, an air inlet is opened at a position corresponding to one end of the box (1) and an air outlet is opened at the other end of the box (1) and the U-shaped flow channel; The fan (2) is installed in the U-shaped flow channel close to the air inlet, and can suck gas from the air inlet into the U-shaped flow channel; the main control board (3) is installed inside the box (1); The sensor assembly comprises a carbon monoxide detection sensor, a smoke detection sensor and a temperature detection sensor, which are sequentially installed in the U-shaped flow channel along the flow direction of the gas and are all electrically connected to the control circuit on the main control board (3).

2. The suction-type battery box safety detection device according to claim 1 is characterized in that: It also includes a gas flow sensor (5), the detection end of the gas flow sensor (5) is located in the U-shaped flow channel close to the gas outlet, and the gas flow sensor (5) is electrically connected to the control circuit on the main control board (3).

3. The suction-type battery box safety detection device according to claim 2 is characterized in that: The middle of the U-shaped flow channel is also filled with a porous flow stabilizing structure (6) for stabilizing the flow. The smoke detection sensor, the carbon monoxide detection sensor and the temperature detection sensor are all located in the U-shaped flow channel near the air inlet.

4. The suction-type battery box safety detection device according to claim 1 is characterized in that: There is a dust screen inside the air inlet.

5. The suction-type battery box safety detection device according to any one of claims 1 to 4, characterized in that: It also includes a second partition, which is horizontally installed inside the box body (1), and the second partition divides the inside of the box body (1) into a first chamber and a second chamber arranged in sequence from top to bottom, and the first chamber and the second chamber are sealed and independent; the first partition (4) is vertically installed inside the second chamber and divides the inside of the second chamber into a U-shaped flow channel; the main control board (3) and each sensor are installed in the first chamber, and the detection end of each sensor passes through the second partition from the first chamber and extends into the second chamber, and each sensor is sealed and connected to the second partition.

6. The suction-type battery box safety detection device according to claim 5, characterized in that: It also includes a power supply, which is electrically connected to the main control board (3).

7. The suction-type battery box safety detection device according to claim 5, characterized in that: The box body (1) comprises a lower box body with an open top and a box cover for covering the open top, the box cover is detachably and sealedly fixedly connected to the lower box body, and the second partition is sealedly and fixedly connected to the box cover to form a first chamber.

8. The suction-type battery box safety detection device according to claim 1, characterized in that: It also includes a pipeline mechanism, which includes an intake pipe, a three-way solenoid valve, a main pipe and multiple branch pipes; one end of the multiple branch pipes is used to be connected to the interior of the multiple battery packs one by one, and the other ends of the multiple branch pipes are respectively connected to one end of the main pipe, and the other end of the main pipe is connected to the air inlet of the three-way solenoid valve. The first air outlet of the three-way solenoid valve is connected to one end of the intake pipe, and the other end of the intake pipe is connected to the air inlet. The second air outlet of the three-way valve is used to be connected to the liquid outlet of the thermal runaway suppression mechanism.

9. The suction-type battery box safety detection device according to claim 8, characterized in that: It also includes a thermal runaway suppression mechanism, and the second gas outlet of the three-way valve is connected to the liquid outlet of the thermal runaway suppression mechanism.

10. The suction type battery box safety detection device according to claim 9, characterized in that: It also includes a host computer, a monitoring mechanism, a pipeline mechanism and a thermal runaway suppression mechanism which are electrically connected to the controller respectively.

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