CN115036642A - A mine vehicle battery explosion-proof device - Google Patents

Abstract

The invention discloses a vehicle battery explosion-proof device for a mine, which comprises: the battery control system is connected with the battery pack, a first shell is arranged outside the battery control system, a second shell is arranged outside the battery pack, and air outlet holes are formed in the explosion-proof shell, the first shell and the second shell; the battery control system comprises an information acquisition module and a control module, wherein the information acquisition module is connected with the control module, the information acquisition module is used for acquiring the state information of the battery pack, and the control module is used for adjusting the power supply state of the battery pack to the vehicle load according to the state information. The invention can adjust the power supply state of the battery pack to the vehicle load in time so as to avoid explosion of the battery pack.

Description

A kind of mine vehicle battery explosion-proof device

technical field

This specification relates to the technical field of mine equipment, in particular to an explosion-proof device for a vehicle battery in a mine.

Background technique

At present, pure electric vehicles are widely used as transport vehicles in mines. Pure electric vehicles use battery packs to power the vehicles. When the battery packs supply power to the vehicle load, an abnormal situation may occur and an explosion may occur, causing damage to people or things. . The vehicle load here refers to the electrical components of the vehicle such as the engine.

SUMMARY OF THE INVENTION

In order to solve the above problems, the embodiments of this specification provide an explosion-proof device for a vehicle battery in a mine, which can stop power supply to the vehicle load in time when the battery pack is in an abnormal operating state to prevent the battery pack from exploding.

The embodiments of this specification are implemented as follows:

An explosion-proof device for a vehicle battery in a mine, comprising: an explosion-proof casing, a battery control system and a battery pack are arranged in the explosion-proof casing, the battery control system is connected with the battery pack, and a first battery is arranged outside the battery control system. a casing, the battery pack is provided with a second casing outside, and the explosion-proof casing, the first casing and the second casing are all provided with air outlet holes;

The battery control system includes an information collection module and a control module, the information collection module is connected with the control module, the information collection module is used for collecting the state information of the battery pack, and the control module is used for The state information adjusts the power supply state of the battery pack to the vehicle load.

The above at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects: the information collection module of the present invention can collect the state information of the battery pack and send the state information to the control module. When the battery pack has spontaneous combustion, short circuit or discharge, the status information will become abnormal. When the control module judges that the status information is abnormal, it can adjust the power supply status of the battery pack to the vehicle load in time to avoid the battery pack from exploding. .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following briefly introduces the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of an explosion-proof device for a vehicle battery in a mine provided by an embodiment of the present specification.

1. Explosion-proof housing; 2. First housing; 3. Second housing; 4. Battery pack; 5. First fan; 6. Second fan; 7. First current sensor; 8. First voltage sensor; 9, the second voltage sensor; 10, the second current sensor; 11, the controller; 12, the switch; 13, the varistor; 14, the timing module; 15, the display screen; 16, the air outlet; 17, the first junction box ; 18, the second junction box; 19, the first cable junction box; 20, the second cable junction box; 21, the explosion-proof cable; 22, the signal line.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention.

As shown in FIG. 1 , the present invention provides an explosion-proof device for a mine vehicle battery, comprising: an explosion-proof casing 1 , a battery control system and a battery pack 4 are arranged in the explosion-proof casing 1 , and the battery control system is connected to the battery pack 4 . A first casing 2 is provided outside the battery control system, and a second casing 3 is provided outside the battery pack 4 , that is, the battery control system is arranged inside the first casing 2 , and the battery pack 4 is arranged inside the second casing 3 . The explosion-proof casing 1 , the first casing 2 and the second casing 3 are all provided with air outlet holes 16 .

The battery control system includes an information collection module and a control module. The information collection module is connected with the control module. The information collection module is used to collect the status information of the battery pack 4, and the control module is used to adjust the power supply status of the battery pack 4 to the vehicle load according to the status information. . The state information of the battery pack 4 may include voltage information, current information, and the like. The power supply status of the battery pack 4 to the vehicle load may include power supply to the vehicle load, power off (stop power supply) to the vehicle load, the magnitude of the total current that supplies power to the vehicle load, and the like. The vehicle load refers to the electrical devices on the vehicle, such as the engine.

The information collection module of the present invention can collect state information of the battery pack 4, such as voltage and current information. When the battery pack 4 has spontaneous combustion, a short circuit, or sparks during discharge, the status information will become abnormal. When the control module determines that the status information is abnormal, it can timely control the battery pack 4 to stop supplying power to the vehicle load. Stopping the battery pack 4 in time can effectively prevent the battery pack 4 from exploding.

At the same time, in order for the battery control system to effectively control the battery pack 4 more stably, the battery control system is arranged in the first casing 2, and the battery pack 4 is arranged in the second casing 3. The purpose is to make the battery control system Separated from the battery pack in two spaces, the battery pack 4 is protected by the second casing 3, and the battery control system is protected by the first casing 2. When the battery pack 4 discharges and has abnormal conditions such as electric sparks, the battery control system can Without being affected, the battery pack 4 is effectively controlled, such as reducing the total power supply current in time or stopping power supply to the vehicle load.

Among them, the explosion-proof casing 1 , the first casing 2 and the second casing 3 can be made of an explosion-proof plate with holes. In this way, on the one hand, ventilation is facilitated, and the heat dissipation function of the battery control system and the battery pack 4 is enhanced, and on the other hand, the explosion of the battery pack 4 is prevented from affecting the outside world.

Further, the first housing 2 is provided with a first cooling device for cooling the battery control system, and the second housing 3 is provided with a second cooling device for cooling the battery pack 4 . The first cooling device may include a first fan 5 , and the second cooling device may include a second fan 6 . In this way, under the blowing of the first fan 5 and the second fan 6, the heat generated by the battery control system and the battery pack 4 during operation can be released in time, creating a low temperature environment and reducing the risk of the battery pack 4 exploding.

The information acquisition module includes a first current sensor 7 for detecting the total current of the battery pack 4 supplying power to the vehicle load, a first voltage sensor 8 for measuring the total voltage of the battery pack 4 and measuring the partial voltage of each single cell of the battery pack 4 of the second voltage sensor 9. When at least one of the total current is not in the first preset range, the total voltage is not in the second preset range and the divided voltage is not in the third preset range, the control module controls the battery pack 4 to stop supplying power to the vehicle load. The first preset range, the second preset range, and the third preset range are not specifically limited, and can be set according to the actual conditions of each vehicle.

That is to say, the state information of the battery pack 4 may include total current, total voltage and partial voltage. When at least one of the total current, the total voltage and the divided voltage is abnormal and is not within the respective preset ranges, the power supply to the vehicle load is stopped. In order to prevent the battery pack 4 from continuing to work and explode. When the battery pack 4 is short-circuited, the total current will change. The battery pack 4 is composed of multiple single cells. When the voltage of a single battery is abnormal or when the total voltage of the battery pack 4 is abnormal, there will be a risk of explosion. When the control The module determines that when any one of the information collected by the information collection module is abnormal, it will control the battery pack 4 to stop supplying power to the vehicle load in time.

The information acquisition module further includes a detection load forming a detection loop with the battery pack 4 and a second current sensor 10 for measuring the current of the detection loop, and the detection load may be an electrical device such as a resistor. When the current of the detection loop is within the fourth preset range, the total voltage is within the fifth preset range, and each partial voltage is within the sixth preset range, the control module controls the battery pack 4 to supply power to the vehicle load. The fourth preset range, the fifth preset range, and the sixth preset range are not specifically limited, and can be set according to the actual conditions of each vehicle.

By adding a detection circuit, the battery pack 4 can be detected in advance before the battery pack 4 supplies power to the vehicle load. The battery pack 4 forms a detection loop with the detection load, and the second current sensor 10 is used to detect the current in the detection loop. When within the respective preset ranges, it indicates that the state of the battery pack 4 itself is normal and can supply power to the vehicle load. After the pre-test is qualified, the power supply to the vehicle load is started, which can further prevent the possibility of explosion of the battery pack 4 when supplying power to the vehicle load.

The control module includes a controller 11 and a switch 12 connected between the battery pack 4 and the vehicle load. The controller 11 is connected to the information acquisition module, and the controller 11 controls the working state of the switch 12 according to the status information, so as to control the battery pack 4 pair. The power supply status of the vehicle load.

When the status information of the battery pack 4 is abnormal, the information collection module sends the collected status information to the controller 11, the controller 11 judges that the status information is abnormal, and controls the switch 12 to turn off, so that the battery pack 4 is powered off from the vehicle load, That is, the battery pack 4 is stopped to supply power to the vehicle load, so as to prevent the battery pack 4 from continuing to work in the event of a failure and causing an explosion. When the controller 11 controls the switch 12 to be closed, the battery pack 4 can supply power to the vehicle load.

The control module further includes a varistor 13, which is connected in series with the vehicle load, and the controller 11 controls the resistance of the varistor 13 according to the state information to adjust the total power supply current of the battery pack 4 to the vehicle load.

For example, when the battery pack 4 has an overcurrent during the power supply process, the controller 11 can control the resistance of the varistor 13 to increase to reduce the total power supply current. When an undercurrent occurs during the power supply process, the resistance of the varistor 13 can be adjusted The value becomes smaller to increase the total supply current.

The battery control system further includes a timing module 14, the timing module 14 is connected to the controller 11, the timing module 14 is used to record time information corresponding to the status information, and the time information is used to indicate the time or duration information when the battery pack is in the state indicated by the status information. .

The timing module 14 is added to record the time information corresponding to the status information, so that the status information of the battery pack 4 at each moment can be known. The state information of the battery pack 4 can be associated with time, such as the time when the battery pack 4 fails, the moment when the battery pack 4 starts to supply power to the vehicle load, and the like. In this way, the duration of one normal operation of the battery pack 4 can be counted to provide a basis for subsequent use and improvement of the battery pack 4 . For example, after statistics, when the battery pack 4 is prone to failure after the continuous working time of N hours, the vehicle user can be reminded to stop using the vehicle when the battery pack 4 reaches the working time, and let the vehicle rest for a certain period of time before continuing. use. Alternatively, draw a state information change diagram with the abscissa as the time and the state information as the ordinate to analyze the change trend of each state information of the battery pack 4 for a period of time before the failure occurs, and use this as a subsequent judgment that the battery pack 4 will occur. Fault judgment conditions, etc.

The mine vehicle battery explosion-proof device also includes an explosion-proof cable 21; the first housing 2 is provided with a first cable junction box 19, the battery control system is connected to the first cable junction box 19, and the second housing 3 is provided with a second cable The junction box 20 and the battery pack 4 are connected with the second cable junction box 20 , and the first cable junction box 19 and the second cable junction box 20 are connected by an explosion-proof cable 21 .

Explosion-proof cables 21 are used to connect the first cable junction box 19 and the second cable junction box 20. When a short circuit or an electric spark occurs, the surrounding flammable and explosive gas will not be ignited, which increases safety and prevents explosions.

A display screen 15 is provided outside the explosion-proof housing 1, the display screen 15 is connected with the control module, and the control module controls the display screen 15 to display status information.

In this way, the staff can observe the status information of the battery pack 4 through the display screen 15 and make their own judgments according to the status information. in order to take appropriate emergency measures in a timely manner.

Finally, an embodiment of the present invention will be described in detail with reference to FIG. 1 . The explosion-proof device for a mine vehicle battery includes an explosion-proof casing 1, a first casing 2 and a second casing 3 are arranged in the explosion-proof casing 1, and the explosion-proof casing 1, the first casing 2 and the second casing 3 are all provided with an air outlet 16. . A battery control system and a first fan 5 are arranged in the first casing 2 , and a battery pack 4 and a second fan 6 are arranged in the second casing 3 . The battery control system includes a control module and an information acquisition module. The information collection module includes a first current sensor 7 , a first voltage sensor 8 , a second voltage sensor 9 , and a second current sensor 10 , and detects the load, and the detection load forms a detection loop with the battery pack 4 . The control module includes a controller 11, a switch 12 and a varistor 13. Both the switch 12 and the varistor 13 are connected to the main circuit of the circuit formed by the battery pack 4 and the vehicle load, so as to control the on-off of the main circuit and adjust the total current. The varistor 13 in series with the vehicle load. Specifically, the first current sensor 7 , the first voltage sensor 8 , the second voltage sensor 9 , the second current sensor 10 , the detection load, the controller 11 , the switch 12 and the varistor 13 can be connected to the first junction box through the signal line 22 17 to achieve the purpose of circuit connection. The first housing 2 is provided with a first cable junction box 19 , and the first junction box 17 is connected to the first cable junction box 19 through a signal wire 22 . The second housing 3 is provided with a second junction box 18, the battery pack 4 is connected to the second junction box 18 through the signal wire 22, the second junction box 18 is connected to the second cable junction box 20 through the signal wire 22, the first A cable junction box 19 and a second cable junction box 20 are connected by an explosion-proof cable 21 . The first junction box 17 is also connected with the timing module 14 and the display screen 15 through the signal line 22 , so that the timing module 14 is connected with the controller 11 , and the display screen 15 is connected with the controller 11 . The connection of the battery pack 4 to the vehicle load is not shown in the figure.

The above are only specific embodiments of the invention, but the protection scope of the invention is not limited to this, and any changes or substitutions that are not conceived of without creative work should be included within the protection scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

The controller may be implemented in any suitable manner, and may be a PLC or a single-chip microcomputer, etc., or may take the form of, for example, a microprocessor or processor and stores computer-readable program code (such as software or firmware) executable by the (micro)processor. In the form of computer readable media, logic gates, switches, application specific integrated circuits (ASICs), programmable logic controllers and embedded microcontrollers, examples of controllers include but are not limited to the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicon Labs C8051F320, the memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art also know that, in addition to implementing the controller in the form of pure computer-readable program code, the controller can be implemented as logic gates, switches, application-specific integrated circuits, programmable logic controllers and embedded devices by logically programming the method steps. The same function can be realized in the form of a microcontroller, etc. Therefore, such a controller can be regarded as a hardware component, and the devices included therein for realizing various functions can also be regarded as a structure within the hardware component. Or even, the means for implementing various functions can be regarded as both a software module implementing a method and a structure within a hardware component.

Claims (10)

1. A vehicle battery explosion-proof device for a mine, comprising: the battery pack protection device comprises an explosion-proof shell (1), wherein a battery control system and a battery pack (4) are arranged in the explosion-proof shell (1), the battery control system is connected with the battery pack (4), a first shell (2) is arranged outside the battery control system, a second shell (3) is arranged outside the battery pack (4), and air outlet holes (16) are formed in the explosion-proof shell (1), the first shell (2) and the second shell (3);

the battery control system comprises an information acquisition module and a control module, wherein the information acquisition module is connected with the control module, the information acquisition module is used for acquiring the state information of the battery pack (4), and the control module is used for adjusting the power supply state of the battery pack (4) to the vehicle load according to the state information.

2. The explosion-proof device for the mine vehicle battery according to claim 1, wherein a first cooling device for cooling the battery control system is provided in the first housing (2), and a second cooling device for cooling the battery pack (4) is provided in the second housing (3).

3. The vehicle battery explosion-proof device for mines as set forth in claim 1, wherein the information acquisition module comprises a first current sensor (7) for detecting the total current of the battery pack (4) for supplying power to the vehicle load, a first voltage sensor (8) for measuring the total voltage of the battery pack (4), and a second voltage sensor (9) for measuring the divided voltages of the individual cells of the battery pack (4); when at least one of the total current is not in a first preset range, the total voltage is not in a second preset range and the divided voltage is not in a third preset range, the control module controls the battery pack (4) to stop supplying power to the vehicle load.

4. The mine vehicle battery explosion protection device according to claim 3, wherein the information acquisition module further comprises a detection load forming a detection loop with the battery pack (4) and a second current sensor (10) measuring a current of the detection loop; and when the current of the detection loop is within a fourth preset range, the total voltage is within a fifth preset range and each partial voltage is within a sixth preset range, the control module controls the battery pack (4) to supply power to the vehicle load.

5. The mine vehicle battery explosion protection device according to claim 1, wherein the control module comprises a controller (11) and a switch (12) connected between the battery pack (4) and the vehicle load, and the controller (11) controls the operating state of the switch (12) according to the state information so as to control the power supply state of the battery pack (4) to the vehicle load.

6. The vehicle battery explosion protection device for mines according to claim 5, wherein the control module further comprises a rheostat (13), the rheostat (13) is connected in series with the vehicle load, and the controller (11) controls the resistance value of the rheostat (13) according to the state information to adjust the total current of the battery pack (4) for supplying power to the vehicle load.

7. The mine vehicle battery explosion-proof device according to claim 5, wherein the battery control system further comprises a timing module (14), the timing module (14) is connected with the controller (11), the timing module (14) is configured to record time information corresponding to the state information, and the time information is time or duration information used for representing that the battery pack is in a state represented by the state information.

8. The mine vehicle battery explosion protection apparatus according to claim 1, wherein the mine vehicle battery explosion protection apparatus further comprises an explosion-proof cable (21); the battery control system is characterized in that a first cable junction box (19) is arranged on the first shell (2), the battery control system is connected with the first cable junction box (19), a second cable junction box (20) is arranged on the second shell (3), the battery pack (4) is connected with the second cable junction box (20), and the first cable junction box (19) is connected with the second cable junction box (20) through the explosion-proof cable (21).

9. The vehicle battery explosion-proof device for the mine as recited in claim 1, wherein a display screen (15) is arranged outside the explosion-proof housing (1), the display screen (15) is connected with the control module, and the control module controls the display screen (15) to display the state information.

10. The explosion protection device for vehicle batteries for mines according to claim 2, wherein the first temperature reducing device comprises a first fan (5) and the second temperature reducing device comprises a second fan (6).

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