Storage battery electric quantity management system and method of anti-explosion mobile equipment

Abstract

The invention relates to a storage battery electric quantity management system and method for anti-explosion mobile equipment, and the system comprises a control circuit which is used for collecting the power supply current of a power supply loop of an anti-explosion lead-acid storage battery pack, and controlling the connection and disconnection between an external power utilization device and the anti-explosion lead-acid storage battery pack according to the power supply current; the external sensor module is used for collecting dust concentration, combustible gas concentration and vibration quantity; the external charging module is used for connecting different external charging devices by switching the working mode of the external charging module; the control circuit is also used for controlling an external charging module according to the dust concentration, the combustible gas concentration, the vibration quantity and a power supply control signal, so that the explosion-proof lead-acid storage battery pack is connected or disconnected with the explosion-proof lead-acid storage battery pack through the control circuit; the safety performance of the system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery power management, and in particular to a battery power management system and method for explosion-proof mobile equipment. Background Art

[0002] With the widespread application of explosion-proof mobile equipment in various fields, the requirements for battery power management are increasing. At present, the existing battery power management system has some shortcomings in explosion-proof mobile equipment. On the one hand, the traditional power management system is not accurate enough to accurately reflect the actual power status of the battery, which may cause the equipment to suddenly lose power during use, affecting work efficiency and safety. On the other hand, there is a lack of optimized design for the special environment of explosion-proof mobile equipment, and it cannot detect the high temperature and dust environment in which the equipment is currently located, and there is insufficient consideration for safety. Summary of the invention

[0003] In order to solve the technical problem that the battery management system in the prior art does not take environmental safety into consideration, the present invention provides a battery power management system and method for an explosion-proof mobile device.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A battery power management system for an explosion-proof mobile device, used for managing the charging and discharging of an explosion-proof lead-acid battery pack, comprising an explosion-proof control box, a control circuit arranged in the explosion-proof control box and connected to the explosion-proof lead-acid battery pack, and an external sensor module and an external charging module arranged outside the explosion-proof control box, wherein the external sensor module is connected to the control circuit, and the external charging module is connected to the explosion-proof lead-acid battery pack through the control circuit; The external sensor module is used to collect dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box in the environment where the explosion-proof control box is located; The external charging module is used to switch its own working mode so that the explosion-proof lead-acid battery pack can be connected to different external charging devices through the control circuit; The control circuit is used to collect the power supply current of the explosion-proof lead-acid battery pack power supply circuit, and generate a power supply control signal according to the power supply current to control the on-off connection between the external power-consuming device and the explosion-proof lead-acid battery pack, and control the on-off connection between the external charging module and the explosion-proof lead-acid battery pack according to the power supply control signal, the dust concentration, the combustible gas concentration and the vibration amount.

[0005] The beneficial effects of the present invention are as follows: by collecting the dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box in the environment where the explosion-proof control box is located through the external sensor module, the management system can control the on-off between the external charging module and the explosion-proof lead-acid battery pack according to the dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box; and prevent the dust concentration, combustible gas concentration and vibration amount in the charging environment from exceeding the standard to cause safety hazards to the system, thereby improving the charging and discharging safety of the battery.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the control circuit is specifically used to calculate the battery capacity and the supply voltage of the explosion-proof lead-acid battery pack according to the supply current; determine the power supply mode according to the supply voltage and the battery capacity, and generate the power supply control signal according to the power supply mode; generate an environmental status signal according to the dust concentration, the combustible gas concentration and the vibration amount; and control the connection and disconnection between the external charging module and the explosion-proof lead-acid battery pack according to the power supply control signal and the environmental status signal.

[0008] Furthermore, the control circuit is specifically used to calculate the battery power of the explosion-proof lead-acid battery pack according to the power supply current by adopting a current integration method.

[0009] Furthermore, the control circuit comprises: A shunt connected to the explosion-proof lead-acid battery pack and used to collect the power supply current of the power supply circuit of the explosion-proof lead-acid battery pack; A controller is connected to the explosion-proof lead-acid battery pack and the shunt, and is used to calculate the battery power of the explosion-proof lead-acid battery pack according to the supply current, and calculate the supply voltage according to the supply current and the resistance value of the shunt.

[0010] Further, the environmental status signal includes an alarm signal and a normal status signal; The environmental status signal includes an alarm signal and a normal status signal; The controller is also specifically used to determine whether the dust concentration is within a preset dust concentration range threshold, whether the combustible gas concentration is within a preset gas concentration range threshold, and whether the vibration amount is within a preset vibration amount range threshold. If the dust concentration is within the preset dust concentration range threshold, and the combustible gas concentration is within the preset gas concentration range threshold, and the vibration amount is within the preset vibration amount range threshold, then the normal state signal is generated; if the dust concentration is outside the preset dust concentration range threshold, or / and, the combustible gas concentration is outside the preset gas concentration range threshold, or / and, the vibration amount is outside the preset vibration amount range threshold, then the alarm signal is generated.

[0011] Further, the power supply mode includes a low power consumption mode and a full power mode; the power supply control signal includes a power supply on control signal and a charging on control signal; The controller is also specifically used to determine whether the power supply voltage and the battery power meet normal power supply conditions. If the power supply voltage and the battery power both meet normal power supply conditions, the power supply mode is determined to be the full power mode, and the power supply connection control signal is generated according to the full power mode; if either the power supply voltage or the battery power does not meet normal power supply conditions, the power supply mode is determined to be the low power consumption mode, and the charging connection control signal is generated according to the low power consumption mode.

[0012] Furthermore, the control circuit further comprises: A power supply control contactor is connected to the controller and the external power device, and is used to connect the external power device to the explosion-proof lead-acid battery pack according to the power supply connection control signal; and disconnect the external power device from the explosion-proof lead-acid battery pack according to the charging connection control signal; A charging switching contactor is connected to the controller and the external charging module, and is used to disconnect the external charging module from the explosion-proof lead-acid battery pack according to the power supply connection control signal and / or the alarm signal; and to connect the external charging module to the explosion-proof lead-acid battery pack according to the charging connection control signal and the normal state signal.

[0013] Further, the external charging mode includes a manual charging mode and an automatic charging mode; the different external charging devices include at least a first external charging device and a second external charging device; The external charging module comprises: An automatic charging plate, used for connecting to the first external charging device; A manual charging connector, used for connecting to the second external charging device; A key switch, used for switching the charging switching contactor to the manual charging mode; a photoelectric sensor connected to the automatic charging board and the controller, configured to collect a charging voltage of the first external charging device and transmit the charging voltage to the controller, so that the controller generates an automatic charging start signal according to the charging voltage; A charging switching contactor is connected to the controller, the automatic charging plate, the manual charging connector and the key switch, and is used to connect with the second external charging device through the manual charging connector when the key switch switches to the manual charging mode; and to connect with the first external charging device through the automatic charging plate after receiving the automatic charging start signal.

[0014] Furthermore, the external sensor module includes: A dust sensor connected to the control circuit and used to collect the dust concentration in the environment where the explosion-proof control box is located; A combustible gas sensor, connected to the control circuit, for collecting the combustible gas concentration in the environment where the explosion-proof control box is located; A vibration sensor is connected to the control circuit and is used to collect the vibration amount of the explosion-proof control box.

[0015] In order to solve the above technical problems, the present invention also provides a battery power management method for explosion-proof mobile equipment, and its specific technical contents are as follows: A management method for a battery power management system applied to the above-mentioned explosion-proof mobile equipment comprises the following steps: The control circuit collects the power supply current of the power supply circuit of the explosion-proof lead-acid storage battery pack, and generates a power supply control signal according to the power supply current to control the connection and disconnection between the external power-consuming device and the explosion-proof lead-acid storage battery pack; The external sensor module collects dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box in the environment where the explosion-proof control box is located; The external charging module switches its own working mode so that the explosion-proof lead-acid battery pack can be connected to different external charging devices through the control circuit; The control circuit controls the connection and disconnection between the external charging module and the explosion-proof lead-acid battery pack according to the power supply control signal, the dust concentration, the combustible gas concentration and the vibration amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural principle block diagram of a battery power management system for an explosion-proof mobile device in an embodiment of the present invention; Figure 2 Schematic diagram of the structure of the control circuit in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the sensor module in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an external charging module in an embodiment of the present invention; Figure 5 The present invention is a block diagram of the working principle of a battery power management system for an explosion-proof mobile device in an embodiment of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Explosion-proof lead-acid battery pack; 2. Explosion-proof control box; 3. Control circuit; 4. External sensor module; 5. External charging module; 301. Power supply control contactor; 302. Positive branch terminal block; 303. Charging control contactor; 304. Shunt; 305. Negative branch terminal block; 306. Controller; 401. Dust sensor; 402. Combustible gas sensor; 403. Vibration sensor; 404. Signal collector; 501. Charging switching contactor; 502. Automatic charging board; 503. Key switch; 504. Manual charging connector; 505. Photoelectric sensor. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] like Figure 1 As shown, this embodiment provides a battery power management system for an explosion-proof mobile device, which is used to manage the charging and discharging of an explosion-proof lead-acid battery pack 1, including an explosion-proof control box 2, a control circuit 3 arranged in the explosion-proof control box 2 and connected to the explosion-proof lead-acid battery pack 1, and an external sensor module 4 and an external charging module 5 arranged outside the explosion-proof control box 2, wherein the external sensor module 4 is connected to the control circuit 3, and the external charging module 5 is connected to the explosion-proof lead-acid battery pack 1 through the control circuit 3; The control circuit 3 is used to collect the power supply current of the power supply circuit of the explosion-proof lead-acid battery pack 1, calculate the battery power and the power supply voltage of the explosion-proof lead-acid battery pack 1 according to the power supply current; determine the power supply mode according to the power supply voltage and the battery power, and generate a power supply control signal according to the power supply mode; and control the connection and disconnection between the external power-consuming device and the explosion-proof lead-acid battery pack 1 according to the power supply control signal; The external sensor module 4 is used to collect dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box 2 in the environment where the explosion-proof control box 2 is located; An external charging module 5, used to connect the explosion-proof lead-acid battery pack 1 to different external charging devices through the control circuit 3 by switching its own working mode; The control circuit 3 is also used to generate an environmental status signal according to the dust concentration, the combustible gas concentration and the vibration amount; and to control the connection and disconnection between the external charging module 5 and the explosion-proof lead-acid battery pack 1 according to the power supply control signal and the environmental status signal.

[0020] In some embodiments, the control circuit 3 is specifically used to calculate the battery power of the explosion-proof lead-acid battery group 1 according to the power supply current using a current integration method when the ambient temperature of the explosion-proof lead-acid battery group 1 is greater than or equal to a preset ambient temperature value; when the ambient temperature of the explosion-proof lead-acid battery group 1 is less than the preset ambient temperature value, construct a low-temperature power loss compensation prediction model based on a computer deep learning method; and use the low-temperature power loss compensation prediction model to preset.

[0021] Specifically, when the ambient temperature of the explosion-proof lead-acid battery group 1 is lower than the preset ambient temperature value, the current integration method is used to calculate the initial battery power of the explosion-proof lead-acid battery group 1 according to the power supply current; a computer deep learning model is constructed; the power supply current when the ambient temperature of the explosion-proof lead-acid battery group 1 is lower than the preset ambient temperature value is collected to obtain historical power supply current data; a battery tester is used to measure the measured power when the ambient temperature of the explosion-proof lead-acid battery group 1 is lower than the preset ambient temperature value to obtain measured power data; the computer deep learning model is trained using the historical power supply current data and the measured power data to obtain the low-temperature power loss compensation prediction model; the power supply current is input into the low-temperature power loss compensation prediction model to obtain a power loss coefficient; the final power calculation value is calculated using the initial battery power and the power loss coefficient to obtain the battery power; wherein the preset ambient temperature value is 0°C, and the ambient temperature of the explosion-proof lead-acid battery group 1 is obtained by collecting the temperature sensor.

[0022] The calculation formula for calculating the final power calculation value using the initial battery power and the power loss coefficient is as follows: ;in, Indicates the battery level, represents the initial battery charge, Represents the power loss coefficient.

[0023] Calculating the battery power through the current integration method and computer prediction can make the current integration method and computer prediction complement each other. In a low temperature environment, when the current integration method is inaccurate in calculating the battery power, the battery power can be calculated more accurately, thereby improving the accuracy of power calculation.

[0024] like Figure 2 As shown, the control circuit 3 includes: A shunt 304, connected to the explosion-proof lead-acid battery pack 1, for collecting the power supply current of the power supply circuit of the explosion-proof lead-acid battery pack 1; The controller 306 is connected to the explosion-proof lead-acid battery pack 1 and the shunt 304 , and is used to calculate the battery power of the explosion-proof lead-acid battery pack 1 according to the supply current, and calculate the supply voltage according to the supply current and the resistance value of the shunt 304 .

[0025] A power supply control contactor 301 is connected to the controller 306 and the external power device, and is used to connect the external power device to the explosion-proof lead-acid battery pack 1 according to the power supply connection control signal; and disconnect the external power device from the explosion-proof lead-acid battery pack 1 according to the charging connection control signal; The charging control contactor 303 is connected to the controller 306 and the external charging module 5, and is used to disconnect the external charging module 5 from the explosion-proof lead-acid battery pack 1 according to the power supply connection control signal and / or the alarm signal; and connect the external charging module 5 to the explosion-proof lead-acid battery pack 1 according to the charging connection control signal and the normal state signal. The power supply control contactor 301 is interlocked with the charging control contactor 303.

[0026] In some embodiments, the environmental status signal includes an alarm signal and a normal status signal; The controller 306 is also specifically used to determine whether the dust concentration is within a preset dust concentration range threshold, whether the combustible gas concentration is within a preset gas concentration range threshold, and whether the vibration amount is within a preset vibration amount range threshold. If the dust concentration is within the preset dust concentration range threshold, and the combustible gas concentration is within the preset gas concentration range threshold, and the vibration amount is within the preset vibration amount range threshold, then the normal state signal is generated; if the dust concentration is outside the preset dust concentration range threshold, or / and, the combustible gas concentration is outside the preset gas concentration range threshold, or / and, the vibration amount is outside the preset vibration amount range threshold, then the alarm signal is generated.

[0027] Specifically, the power supply mode includes a low power consumption mode and a full power mode; the power supply control signal includes a power supply on control signal and a charging on control signal; The controller 306 is also specifically used to determine whether the supply voltage and the battery power meet normal power supply conditions. If the supply voltage and the battery power both meet normal power supply conditions, the power supply mode is determined to be the full power mode, and the power supply connection control signal is generated according to the full power mode; if either the supply voltage or the battery power does not meet normal power supply conditions, the power supply mode is determined to be the low power consumption mode, and the charging connection control signal is generated according to the low power consumption mode.

[0028] like Figure 3 As shown, the external sensor module 4 includes: A dust sensor 401, connected to the control circuit 3, for collecting the dust concentration of the environment in which the explosion-proof control box 2 is located; A combustible gas sensor 402, connected to the control circuit 3, for collecting the combustible gas concentration in the environment of the explosion-proof control box 2; The vibration sensor 403 is connected to the control circuit 3 and is used to collect the vibration amount of the explosion-proof control box 2.

[0029] In some embodiments, the working mode of the external charging module 5 itself includes a manual charging mode and an automatic charging mode; the different external charging devices include at least a first external charging device and a second external charging device; like Figure 4 As shown, the external charging module 5 includes: An automatic charging plate 502, used for connecting to the first external charging device; A manual charging connector 504, used for connecting to the second external charging device; A key switch 503, used to switch the charging control contactor 303 to the manual charging mode; a photoelectric sensor 505 connected to the automatic charging board 502 and the controller 306, for collecting the charging voltage of the first external charging device and transmitting the charging voltage to the controller 306, so that the controller 306 generates an automatic charging start signal according to the charging voltage; The charging switching contactor 501 is connected to the controller 306, the automatic charging plate 502, the manual charging connector 504 and the key switch 503, and is used to connect with the second external charging device through the manual charging connector 504 when the key switch 503 switches to the manual charging mode; and to connect with the first external charging device through the automatic charging plate 502 after receiving the automatic charging start signal.

[0030] The embodiment of the present invention calculates the battery power through the current integration method and computer prediction, which can make the current integration method and computer prediction complement each other. In the case where the current integration method is inaccurate in calculating the battery power in a low temperature environment, a computer prediction model is used to calculate the battery power loss coefficient, and then the power loss coefficient is used to calculate the battery power calculated by the current integration method, and finally a more accurate battery power calculation result is obtained. At the same time, the dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box 2 in the environment where the explosion-proof control box 2 is located are collected through an external sensor module, and the management system can control the connection and disconnection between the external charging module 5 and the explosion-proof lead-acid battery pack 1 according to the dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box 2; prevent the dust concentration, combustible gas concentration and vibration amount in the charging environment from exceeding the standard and causing safety hazards to the system, thereby improving the charging and discharging safety of the battery.

[0031] As shown in FIG5 , the system starts in low power consumption mode 202 by default, at which time the power supply control contactor 301 and the charging switching contactor 501 are both disconnected. The controller 306 collects the current information flowing through the shunt, and calculates the current power information of the explosion-proof lead-acid battery pack 1 by calculating its integral over time, and calculates the current power supply voltage of the explosion-proof lead-acid battery pack 1 according to the current current and the resistance value of the shunt 304.

[0032] When the remaining capacity and supply voltage of the explosion-proof lead-acid battery pack 1 meet the system working conditions, the system enters the full power mode 201. At this time, the controller 306 sends a signal to control the power supply control contactor 301 to be turned on, and the charging control contactor 303 to be turned off. At this time, the explosion-proof lead-acid battery pack 1 can supply power to external devices through the positive branch terminal block 302. In this mode, the controller 306 continuously detects the power of the explosion-proof lead-acid battery pack 1. When its remaining capacity and supply voltage do not meet the system working conditions, the controller 306 sends a control signal to control the power supply control contactor 301 to be turned off, and the system returns to the low power consumption mode 202. The explosion-proof lead-acid battery pack 1 only retains the power supply to the controller circuit and cannot supply power to external devices.

[0033] In some embodiments, the explosion-proof lead-acid battery pack 1 is composed of multiple lead-acid batteries connected in series and placed in an explosion-proof housing.

[0034] The explosion-proof control box 2 is made of aluminum alloy, has good explosion-proof performance, can withstand the explosion pressure that may occur inside, and prevent the explosion from spreading to the surrounding environment.

[0035] The control circuit 3 is located in the explosion-proof control box 2, and includes a power supply control contactor 301, a positive branch terminal block 302, a charging control contactor 303, a shunt 304, a negative branch terminal block 305, and a controller 306. The positive branch terminal block 302 is connected to the positive electrode of the explosion-proof lead-acid battery pack 1 through an explosion-proof cable, the shunt 304 is connected to the negative electrode of the explosion-proof lead-acid battery pack 1 through an explosion-proof cable, the charging control contactor 303 is connected to the charging switching contactor 501 of the external charging module 5 through an explosion-proof cable, and the controller 306 is connected to the signal collector 404 of the external sensor module 4 and the photoelectric sensor 505 of the external charging module 5 through an explosion-proof cable.

[0036] The external sensor module 4 is located outside the explosion-proof control box, which includes a dust sensor 401, a combustible gas sensor 402, a vibration sensor 403, and a signal collector 404. The dust sensor 401 detects the dust concentration in the environment where the explosion-proof control box 2 is located by light scattering method. The combustible gas sensor 402 measures the combustible gas concentration in the current environment of the explosion-proof control box 2 by infrared spectroscopy. The vibration sensor detects the vibration of the current environment of the explosion-proof control box 2 by piezoelectric effect. The dust sensor 401, the combustible gas sensor 402, and the vibration sensor 403 are all connected to the signal collector. When any of the above detection results exceeds the preset range, the corresponding alarm signal will be output to the control circuit 3 through the signal collector 404. When the sensor detection result exceeds the preset value, the control circuit outputs an alarm signal.

[0037] The external charging module 5 is located outside the explosion-proof control box, and includes a charging switching contactor 501, an automatic charging board 502, a key switch 503, a manual charging connector 504 and a photoelectric sensor 505. Among them, the charging switching contactor 501 is connected to the charging control contactor 303 of the control circuit 3 through an explosion-proof cable. The automatic charging board 502 is used to dock with the automatic charger, and the manual charging connector 504 is used to dock with the manual charger. The key switch 503, the charging switching contactor 501, the automatic charging board 502 and the manual charging connector 504 form a self-locking circuit. When the key switch 503 is in the on state, the automatic charging board 502 is connected to the charging switching contactor 501, and the manual charging connector 504 is disconnected from the charging switching contactor 501. When the key switch 503 is in the locked state, the manual charging connector 504 is connected to the charging switching contactor 501, and the automatic charging board 502 is disconnected from the charging switching contactor 501. The photoelectric sensor 505 is used to receive external photoelectric signals and determine whether the device is ready to connect to the automatic charger.

[0038] In one example, the current flows from the positive electrode of the explosion-proof lead-acid battery pack 1 to the positive branch terminal row 302 , flows through the external device to the negative branch terminal row 305 , and then returns to the negative electrode of the explosion-proof lead-acid battery pack 1 through the shunt 304 .

[0039] In some other embodiments, in the low power consumption mode 202, when the photoelectric sensor 505 receives a signal from an external charger, the controller 306 controls the charging control contactor 303 to be turned on. At this time, the system enters the automatic charging mode 203, controls the automatic charging board 502 to be connected to the explosion-proof lead-acid battery pack 1, and the explosion-proof lead-acid battery pack 1 is charged by the external charger.

[0040] In the low power consumption mode 202 , the manual switching key switch 503 enters the locked state, and the system enters the manual charging mode 204 . The controller 306 controls the charging control contactor 303 to be connected, and then controls the manual charging connector 504 to be connected to the explosion-proof lead-acid battery pack 1 .

[0041] In the manual charging mode 204 or the automatic charging mode 203, the controller 306 will continue to calculate the remaining capacity of the current explosion-proof lead-acid battery pack 1. When the battery is fully charged, the controller 306 will give a signal to cut off the charging control contactor 303 and connect the power supply control contactor 301. At this time, the system enters the full power mode 201 again.

[0042] Safety protection for explosion-proof environments. When the system is in full power mode 201 and receives an alarm signal from the vibration sensor 403, it means that the external impact is too large, affecting the stable operation of the system. At this time, the controller 306 will cut off the power supply control contactor 301, and the system will enter the safety protection mode 205. Thereafter, the controller 306 will continue to monitor the alarm signal from the vibration sensor 403 until the alarm signal maintains a low level for a certain period of time, and the controller 306 will then reconnect the power supply control contactor 301, and the system will enter the full power mode 201 again.

[0043] When the system is in manual charging mode 204 or automatic charging mode 203, and receives an alarm signal from the dust sensor 401 or the combustible gas sensor 402, it means that the external environment exceeds the permitted standard and is not suitable for charging. At this time, the controller 306 will cut off the charging control contactor 303, and the system will enter the safety protection mode 205. Before entering the safety protection mode 205, the controller 306 will record the current state of the system and continue to monitor the alarm signals from the dust sensor 401 and the combustible gas sensor 402 until the alarm signal maintains a low level and lasts for a certain period of time. The controller 306 will then turn on the charging control contactor 303 again, and the system will return to the state before entering the safety protection mode 205.

[0044] In some other embodiments, a method for managing battery power of an explosion-proof mobile device is also provided, comprising the following steps: S1, a control circuit collects a power supply current of a power supply circuit of the explosion-proof lead-acid battery pack, and generates a power supply control signal according to the power supply current to control the connection and disconnection between the external power-consuming device and the explosion-proof lead-acid battery pack; The specific steps of S1 include: S101, the control circuit 3 collects the power supply current of the power supply circuit of the explosion-proof lead-acid battery pack 1, and calculates the battery power and the power supply voltage of the explosion-proof lead-acid battery pack 1 according to the power supply current; S102, the control circuit 3 determines a power supply mode according to the power supply voltage and the battery power, and generates a power supply control signal according to the power supply mode; S103 , the control circuit 3 controls the connection and disconnection between the external power-consuming device and the explosion-proof lead-acid battery pack 1 according to the power supply control signal.

[0045] S2, the external sensor module collects the dust concentration, combustible gas concentration and vibration amount of the explosion-proof control box in the environment where the explosion-proof control box is located; S3, the external charging module switches its own working mode to connect the explosion-proof lead-acid battery pack 1 to different external charging devices through the control circuit 3; S4, the control circuit controls the connection and disconnection between the external charging module and the explosion-proof lead-acid battery pack according to the power supply control signal, the dust concentration, the combustible gas concentration and the vibration amount; S4 specific steps include: S401, the control circuit 3 generates an environmental status signal according to the dust concentration, the combustible gas concentration and the vibration amount; S402 , the control circuit 3 controls the connection and disconnection between the external charging module 5 and the explosion-proof lead-acid battery pack 1 according to the power supply control signal and the environmental status signal.

[0046] The embodiment of the present invention collects the dust concentration, combustible gas concentration and vibration of the explosion-proof control box 2 in the environment where the explosion-proof control box 2 is located through an external sensor module, so that the management system can control the connection and disconnection between the external charging module 5 and the explosion-proof lead-acid battery pack 1 according to the dust concentration, combustible gas concentration and vibration of the explosion-proof control box 2; prevents the dust concentration, combustible gas concentration and vibration in the charging environment from exceeding the standard and causing safety hazards to the system, thereby improving the charging and discharging safety of the battery.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery power management system for explosion-proof mobile equipment, characterized in that: Used to manage the charging and discharging of an explosion-proof lead-acid battery pack (1), comprising an explosion-proof control box (2), a control circuit (3) arranged in the explosion-proof control box (2) and connected to the explosion-proof lead-acid battery pack (1), and an external sensor module (4) and an external charging module (5) arranged outside the explosion-proof control box (2), wherein the external sensor module (4) is connected to the control circuit (3), and the external charging module (5) is connected to the explosion-proof lead-acid battery pack (1) via the control circuit (3); The external sensor module (4) is used to collect dust concentration and combustible gas concentration in the environment where the explosion-proof control box (2) is located, as well as the vibration amount of the explosion-proof control box (2); The external charging module (5) is used to switch its own working mode so that the explosion-proof lead-acid battery pack (1) can be connected to different external charging devices through the control circuit (3); The control circuit (3) is used to collect the power supply current of the power supply circuit of the explosion-proof lead-acid battery pack (1), and generate a power supply control signal according to the power supply current to control the connection between the external power-consuming device and the explosion-proof lead-acid battery pack (1), and control the connection between the external charging module (5) and the explosion-proof lead-acid battery pack (1) according to the power supply control signal, the dust concentration, the combustible gas concentration and the vibration amount.

2. The battery power management system for explosion-proof mobile equipment according to claim 1, characterized in that: The control circuit (3) is specifically used to calculate the battery capacity and the supply voltage of the explosion-proof lead-acid battery pack (1) according to the supply current; determine the power supply mode according to the supply voltage and the battery capacity, and generate a power supply control signal according to the power supply mode; generate an environmental status signal according to the dust concentration, the combustible gas concentration and the vibration amount; and control the connection and disconnection between the external charging module (5) and the explosion-proof lead-acid battery pack (1) according to the power supply control signal and the environmental status signal.

3. The battery power management system for explosion-proof mobile equipment according to claim 2, characterized in that: The control circuit (3) is specifically used to calculate the battery power of the explosion-proof lead-acid battery pack (1) according to the power supply current using a current integration method.

4. The battery power management system for explosion-proof mobile equipment according to claim 2, characterized in that: The control circuit (3) comprises: A shunt (304) connected to the explosion-proof lead-acid battery pack (1) and used to collect the power supply current of the power supply circuit of the explosion-proof lead-acid battery pack (1); A controller (306) is connected to the explosion-proof lead-acid battery pack (1) and the shunt (304), and is used to calculate the battery power of the explosion-proof lead-acid battery pack (1) according to the supply current, and to calculate the supply voltage according to the supply current and the resistance value of the shunt (304).

5. The battery power management system for explosion-proof mobile equipment according to claim 4, characterized in that: The environmental status signal includes an alarm signal and a normal status signal; The controller (306) is also specifically used to determine whether the dust concentration is within a preset dust concentration range threshold, whether the combustible gas concentration is within a preset gas concentration range threshold, and whether the vibration amount is within a preset vibration amount range threshold. If the dust concentration is within the preset dust concentration range threshold, and the combustible gas concentration is within the preset gas concentration range threshold, and the vibration amount is within the preset vibration amount range threshold, then the normal state signal is generated; if the dust concentration is outside the preset dust concentration range threshold, or / and, the combustible gas concentration is outside the preset gas concentration range threshold, or / and, the vibration amount is outside the preset vibration amount range threshold, then the alarm signal is generated.

6. The battery power management system for explosion-proof mobile equipment according to claim 5, characterized in that: The power supply mode includes a low power consumption mode and a full power mode; the power supply control signal includes a power supply on control signal and a charging on control signal; The controller (306) is further specifically used to determine whether the power supply voltage and the battery power meet normal power supply conditions. If both the power supply voltage and the battery power meet normal power supply conditions, the power supply mode is determined to be the full power mode, and the power supply connection control signal is generated according to the full power mode; if either the power supply voltage or the battery power does not meet normal power supply conditions, the power supply mode is determined to be the low power consumption mode, and the charging connection control signal is generated according to the low power consumption mode.

7. The battery power management system for explosion-proof mobile equipment according to claim 6, characterized in that: The control circuit (3) further includes: A power supply control contactor (301) is connected to the controller (306) and the external power device, and is used to connect the external power device to the explosion-proof lead-acid battery pack (1) according to the power supply connection control signal; and to disconnect the external power device from the explosion-proof lead-acid battery pack (1) according to the charging connection control signal; A charging control contactor (303) is connected to the controller (306) and the external charging module (5), and is used to disconnect the external charging module (5) from the explosion-proof lead-acid battery pack (1) according to the power supply connection control signal and / or the alarm signal; and to connect the external charging module (5) to the explosion-proof lead-acid battery pack (1) according to the charging connection control signal and the normal state signal.

8. The battery power management system for explosion-proof mobile equipment according to claim 7, characterized in that: The charging mode of the external charging module (5) itself includes a manual charging mode and an automatic charging mode; the different external charging devices include at least a first external charging device and a second external charging device; The external charging module (5) comprises: An automatic charging plate (502), used for connecting to the first external charging device; A manual charging connector (504), used for connecting to the second external charging device; A key switch (503) for switching the charging control contactor (303) to the manual charging mode; a photoelectric sensor (505), connected to the automatic charging plate (502) and the controller (306), for collecting a charging voltage of the first external charging device and transmitting the charging voltage to the controller (306), so that the controller (306) generates an automatic charging start signal according to the charging voltage; The charging switching contactor (501) is connected to the controller (306), the automatic charging plate (502), the manual charging connector (504) and the key switch (503), and is used to connect to the second external charging device through the manual charging connector (504) when the key switch (503) switches to the manual charging mode; and to connect to the first external charging device through the automatic charging plate (502) after receiving the automatic charging start signal.

9. The battery power management system for explosion-proof mobile equipment according to claim 1, characterized in that: The external sensor module (4) comprises: A dust sensor (401), connected to the control circuit (3), and used to collect the dust concentration in the environment where the explosion-proof control box (2) is located; A combustible gas sensor (402), connected to the control circuit (3), and used to collect the combustible gas concentration in the environment where the explosion-proof control box (2) is located; A vibration sensor (403) is connected to the control circuit (3) and is used to collect the vibration amount of the explosion-proof control box (2).

10. A management method for a battery power management system for an explosion-proof mobile device according to any one of claims 1 to 9, characterized in that: The steps include: The control circuit (3) collects the power supply current of the power supply circuit of the explosion-proof lead-acid storage battery pack (1), and generates a power supply control signal according to the power supply current to control the connection between the external power-consuming device and the explosion-proof lead-acid storage battery pack (1); The external sensor module (4) collects dust concentration and combustible gas concentration in the environment where the explosion-proof control box (2) is located, as well as the vibration amount of the explosion-proof control box (2); The external charging module (5) switches its own working mode so that the explosion-proof lead-acid battery pack (1) is connected to different external charging devices through the control circuit (3); The control circuit (3) controls the connection and disconnection between the external charging module (5) and the explosion-proof lead-acid battery pack (1) according to the power supply control signal, the dust concentration, the combustible gas concentration and the vibration amount.

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