High and low voltage battery integrated control power supply system, method and operating machinery

Abstract

This invention provides an integrated high- and low-voltage battery control power supply system, method, and operating machinery, belonging to the field of power supply control technology. The system includes an ignition switch module, a high-voltage battery pack, a low-voltage battery pack, a battery management module, and a DC-DC converter module. When the ignition switch module is closed, the battery management module determines the ignition switch module's closed position signal. When the closed position signal and the low-voltage battery pack's status parameters indicate that the DC-DC converter module needs to be activated, the battery management module controls the DC-DC converter module to convert the high-voltage battery pack's voltage to a target voltage to charge the low-voltage battery pack. The battery management module determines that the DC-DC converter module will only be activated when the ignition switch's power demand and the low-voltage battery pack's status parameters require activation, and will only operate to perform voltage conversion if necessary. Otherwise, the DC-DC converter module remains in a dormant state, thereby effectively reducing energy waste and saving energy.

Description

Technical Field

[0001] This invention relates to the field of power supply control technology, and in particular to a high- and low-voltage battery integrated control power supply system, method, and operating machinery. Background Technology

[0002] Electric vehicles and electric work machinery are gradually gaining a larger share of the market. Their main power components include high-voltage battery packs and low-voltage battery packs. The high-voltage battery packs use a 600V voltage platform powered by lithium-ion batteries, while the low-voltage battery packs use a 24V voltage platform powered by lead-acid batteries or 24V lithium-ion batteries. Currently, most high-voltage and low-voltage battery packs are directly connected to DC-DC converter modules via cables for voltage conversion to meet different power requirements.

[0003] However, maintaining the DC-DC converter at a high voltage for an extended period of time results in some energy waste. Summary of the Invention

[0004] This invention provides a high- and low-voltage battery integrated control power supply system, method, and operating machinery to solve the problem of energy waste caused by the DC conversion module being in a high-voltage state for a long time in the prior art.

[0005] This invention provides an integrated control and power supply system for high and low voltage batteries, comprising: an ignition switch module, a high-voltage battery pack, a low-voltage battery pack, a battery management module, and a DC-DC conversion module;

[0006] The high-voltage battery pack, the low-voltage battery pack, and the battery management module are integrated inside the same housing. The high-voltage battery pack and the low-voltage battery pack are both connected to the battery management module. The ignition switch module is connected to the battery management module. The DC-DC converter module is connected to both the high-voltage battery pack and the low-voltage battery pack.

[0007] When the ignition switch module is closed, the battery management module determines the closed position signal of the ignition switch module. When the closed position signal and the status parameters of the low-voltage battery pack indicate that the DC-DC converter module needs to be activated, the battery management module controls the DC-DC converter module to convert the voltage of the high-voltage battery pack to the target voltage to charge the low-voltage battery pack.

[0008] According to the present invention, a high-voltage battery integrated control and power supply system is provided, wherein the high-voltage battery pack, the low-voltage battery pack and the battery management module are connected by plug-in terminals.

[0009] According to the present invention, a high- and low-voltage battery integrated control power supply system is provided, wherein the outer casing of the housing is provided with a plug-in hole;

[0010] The DC-DC converter module and the ignition switch module are connected to the plug-in terminal through the plug-in hole.

[0011] The high- and low-voltage battery integrated control power supply system provided by the present invention further includes an interlock module;

[0012] One end of the interlock module is connected to the battery management module, and the other end of the interlock module is connected to the low-voltage battery pack;

[0013] The interlock module is used to control the interlock between the low-voltage battery pack and the battery management module.

[0014] According to the present invention, a high- and low-voltage battery integrated control power supply system is provided, wherein the interlock module includes a self-resetting power switch and an interlock relay;

[0015] The self-resetting power switch is located between the battery management module and the low-voltage battery pack. One end of the interlock relay is connected to the battery management module, and the other end of the interlock relay is connected to the low-voltage battery pack. The interlock relay is also connected to the self-resetting power switch.

[0016] The self-resetting power switch is used to control the on / off state of the battery management module, and the interlocking relay is used to control the battery management module to perform a self-test after it is turned on. The self-resetting power switch and the interlocking relay together realize the interlocking of the battery management module.

[0017] According to the present invention, an integrated control and power supply system for high and low voltage batteries is provided, wherein the ignition switch module includes an ignition lock, a first relay, a second relay, and a third relay;

[0018] The first relay is connected to the ACC of the ignition lock, the second relay is connected to the first ON of the ignition lock, the third relay is connected to the second ON of the ignition lock, and the ignition lock is also connected to the battery management module.

[0019] When the ignition lock is in the ACC state, the first relay is turned on, and the battery management module controls the low-voltage battery pack to provide ACC power; when the ignition lock is in the first ON state, the second relay is turned on, and the battery management module controls the low-voltage battery pack to provide the first ON power; when the ignition lock is in the second ON state, the third relay is turned on, and the battery management module controls the low-voltage battery pack to provide the second ON power.

[0020] When the ignition lock requires low-voltage power and the low-voltage battery pack is low on power, the battery management module controls the DC-DC converter to convert the voltage of the high-voltage battery pack to the target voltage to charge the low-voltage battery pack.

[0021] The high- and low-voltage battery integrated control power supply system provided by the present invention further includes a power supply switch module;

[0022] The power supply switch module is located inside the enclosure. One end of the power supply switch module is connected to the battery management module, and the other end of the power supply switch module is connected to the ignition switch module and the low-voltage electrical equipment.

[0023] The power supply switch module is used to control the connection and disconnection between the low-voltage electrical equipment and the ignition switch module and the low-voltage battery pack.

[0024] According to the present invention, a high- and low-voltage battery integrated control power supply system is provided, wherein the power supply switch module includes a main positive relay and a constant current relay;

[0025] One end of the main positive relay is connected to the battery management module, and the other end of the main positive relay is connected to the low-voltage electrical equipment. One end of the constant power relay is connected to the battery management module, and the other end of the constant power relay is connected to the ignition switch module.

[0026] The main positive relay is used to control the connection and disconnection between the low-voltage electrical equipment and the low-voltage battery pack, and the constant current relay is used to control the connection and disconnection between the ignition switch module and the low-voltage battery pack.

[0027] The present invention also provides a high- and low-voltage battery integrated control power supply method, applied to the high- and low-voltage battery integrated control power supply system as described in any of the above claims, the method comprising:

[0028] Obtain the closed position signal of the ignition switch module;

[0029] When the closed position signal indicates that low-voltage power supply is required, the status parameters of the low-voltage battery pack are collected.

[0030] If the status parameter indicates that the low-voltage battery pack is fault-free, then the low-voltage battery pack is controlled to provide low-voltage power supply according to the closed position signal of the ignition switch module.

[0031] If the status parameter indicates that the low-voltage battery pack is low on power, the DC-DC converter module is controlled to convert the voltage of the high-voltage battery pack to the target voltage to charge the low-voltage battery pack, so that the low-voltage battery pack can provide low-voltage power.

[0032] The present invention also provides a working machine, the working machine comprising a high and low voltage battery integrated control power supply system as described in any of the above claims, or for performing a high and low voltage battery integrated control power supply method as described in the above claims.

[0033] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the high and low voltage battery integrated control power supply method as described above.

[0034] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the high- and low-voltage battery integrated control power supply method as described above.

[0035] This invention provides an integrated high- and low-voltage battery control power supply system, method, and operating machinery. The system includes an ignition switch module, a high-voltage battery pack, a low-voltage battery pack, a battery management module, and a DC-DC converter module. The high-voltage battery pack, low-voltage battery pack, and battery management module are integrated into the same housing. Both the high-voltage and low-voltage battery packs are connected to the battery management module, as is the ignition switch module. The DC-DC converter module is connected to both the high-voltage and low-voltage battery packs. When the ignition switch module is closed, the battery management module determines the ignition switch module's closed position signal. When the closed position signal and the low-voltage battery pack's status parameters indicate that the DC-DC converter module needs to be activated, the battery management module controls the DC-DC converter module to convert the high-voltage battery pack's voltage to a target voltage to charge the low-voltage battery pack. The battery management module determines when the DC-DC converter module needs to be activated based on the ignition switch's power demand and the low-voltage battery pack's status parameters. Only when the DC-DC converter module needs to be activated will it be in working state and perform voltage conversion; otherwise, it will remain in a dormant state, thereby effectively reducing energy waste and saving energy. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of the high and low voltage battery integrated control and power supply system provided in an embodiment of the present invention;

[0038] Figure 2 This is a circuit diagram of the high and low voltage battery integrated control and power supply system provided in an embodiment of the present invention;

[0039] Figure 3 This is a schematic flowchart of the high and low voltage battery integrated control power supply method provided in an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0041] Figure label:

[0042] 1. DC-DC converter module; 2. Battery management module; 3. Ignition switch module; 31. Ignition lock; 32. First relay; 33. Second relay; 34. Third relay; 4. Low-voltage battery pack; 5. High-voltage battery pack; 61. Main positive relay; 62. Constant current relay; 7. Self-resetting power switch; 8. Interlock relay; A. Housing. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0044] The following is combined with Figures 1-4 This invention describes an integrated high- and low-voltage battery control power supply system, method, and operating machinery.

[0045] Figure 1 This is a schematic diagram of the structure of the high and low voltage battery integrated control and power supply system provided in an embodiment of the present invention. Figure 2 This is a circuit diagram of the high and low voltage battery integrated control power supply system provided in an embodiment of the present invention.

[0046] like Figure 1 and Figure 2 As shown in the figure, an integrated high- and low-voltage battery control power supply system provided by this embodiment of the invention includes: an ignition switch module 3, a high-voltage battery pack 5, a low-voltage battery pack 4, a battery management module 2, and a DC-DC converter module 1; the high-voltage battery pack 5, the low-voltage battery pack 4, and the battery management module 2 are integrated inside the same housing A. The high-voltage battery pack 5 and the low-voltage battery pack 4 are both connected to the battery management module 2, the ignition switch module 3 is connected to the battery management module 2, and the DC-DC converter module 1 is connected to both the high-voltage battery pack 5 and the low-voltage battery pack 4; when the ignition switch module 3 is closed, the battery management module 2 determines the closed position signal of the ignition switch module 3. When the closed position signal and the status parameters of the low-voltage battery pack 4 indicate that the DC-DC converter module 1 needs to be activated, the battery management module 2 controls the DC-DC converter module 1 to convert the voltage of the high-voltage battery pack 5 to the target voltage to charge the low-voltage battery pack 4.

[0047] In a specific implementation, the main function of the high-voltage battery pack 5 is to drive the operating machinery and provide power support, while the function of the low-voltage battery pack 4 is to provide low-voltage power to the low-voltage electrical equipment inside the operating machinery. The main function of the DC-DC conversion module 1 is to reduce the voltage of the high-voltage battery pack 5 to the target voltage and then charge the low-voltage battery pack 4, thereby ensuring that the voltage of the low-voltage battery pack 4 can be maintained within the operating voltage range, ensuring normal low-voltage power supply to the operating machinery. The ignition switch module 3 refers to the ignition switch related parts of the operating machinery, that is, the key position, such as the ACC position, the ON position, etc. The main function of the battery management module 2 is to realize the overall control of the high-voltage battery pack 5 and the low-voltage battery pack 4. The battery management module 2 can be integrated into the control structure of the high-voltage battery pack 5, thereby eliminating the need for a separate control module for the low-voltage battery pack 4. By integrating the battery management module 2 into one unit to control the high-voltage battery pack 5 and the low-voltage battery pack 4, the control logic is effectively simplified, the battery manufacturing cost is reduced, and the manufacturing and production of electric operating machinery are more conducive.

[0048] Integrating the high-voltage battery pack 5, low-voltage battery pack 4, and battery management module 2 into the same enclosure A, such as within a non-standard enclosure, effectively shortens the cable connections between the high-voltage battery pack 5, low-voltage battery pack 4, and battery management module 2, thus significantly reducing manufacturing costs. Furthermore, since all three are housed within the same enclosed enclosure A, using battery management module 2 to control both the high-voltage battery pack 5 and low-voltage battery pack 4 reduces the cost of separately equipping each battery pack with its own casing.

[0049] When both the high-voltage battery pack 5 and the low-voltage battery pack 4 are functioning normally, the operator controls the power supply and operating status of the work machinery via the ignition switch module 3. When the ignition switch module 3 switches the key position to the position requiring low-voltage power, the battery management module 2 controls the low-voltage battery pack 4 to operate, outputting low-voltage electricity to power the vehicle's low-voltage electrical equipment. Similarly, if power supply is required, the battery management module 2 controls the high-voltage battery pack 5 to start working, providing power to the work machinery and ensuring its normal operation. When the battery management module 2 determines that low-voltage power supply is needed, but the low-voltage battery pack 4 is not functioning properly (e.g., insufficient charge, insufficient voltage), the battery management module 2 will trigger the DC-DC converter module 1. The DC-DC converter module 1 will convert the voltage of the high-voltage battery pack 5 to the target voltage, charging the low-voltage battery pack 4 to restore its operating state and complete the power supply using the low-voltage battery pack 4. In one scenario, the low-voltage battery pack 4 can be controlled to output low voltage while the high-voltage battery pack 5 is charging it, or the low-voltage battery pack 4 can be controlled to output low voltage after the high-voltage battery pack 5 has charged it to meet the preset requirements.

[0050] Therefore, the DC-DC converter 1 will only be triggered to enter the working state and complete the charging of the low-voltage battery pack 4 using the high-voltage battery pack 5 when the battery management module 2 determines that the DC-DC converter 1 needs to work. When all the status parameters of the low-voltage battery pack 4 are normal, the DC-DC converter 1 can be in sleep mode, which can better achieve energy conservation.

[0051] Furthermore, based on the above embodiments, in this embodiment, the high-voltage battery pack 5, the low-voltage battery pack 4, and the battery management module 2 are connected via plug-in terminals. The outer casing of housing A is provided with plug-in holes; the DC-DC conversion module 1 and the ignition switch module 3 are connected to the plug-in terminals via these holes.

[0052] Specifically, the high-voltage battery pack 5, low-voltage battery pack 4, and battery management module 2 are connected via plug-in terminals, facilitating installation and disassembly. For example, when inspecting or repairing a particular component, simply disconnect the corresponding terminal. Furthermore, the high-voltage battery pack 5, low-voltage battery pack 4, and battery management module 2 are integrated within the same enclosure A, treating them as a single unit. Therefore, they are connected to external electrical equipment via plug-in ports, simplifying connection and installation. This also enhances electrical safety; during maintenance, the plug-in ports can be disconnected to ensure safety.

[0053] Compared to cables, plug-in terminals offer greater ease of installation and removal, and facilitate the overall movement of enclosure A. Furthermore, eliminating the cable between DC-DC converter module 1 and low-voltage battery pack 4 effectively reduces battery costs by approximately 350 yuan, and battery weight is reduced by over 10 kg. This also saves installation space, reduces the conversion process, and lowers assembly costs.

[0054] Furthermore, based on the above embodiments, such as Figure 2 As shown, the high- and low-voltage battery integrated control power supply system in this embodiment also includes an interlock module. One end of the interlock module is connected to the battery management module 2, and the other end is connected to the low-voltage battery pack 4. The interlock module is used to control the interlock between the low-voltage battery pack 4 and the battery management module 2. The interlock module includes a self-resetting power switch 7 and an interlock relay 8. The self-resetting power switch 7 is located between the battery management module 2 and the low-voltage battery pack 4. One end of the interlock relay 8 is connected to the battery management module 2, and the other end is connected to the low-voltage battery pack 4. The interlock relay 8 is also connected to the self-resetting power switch 7. The self-resetting power switch 7 is used to control the on / off state of the battery management module 2, and the interlock relay 8 is used to control the self-test performed after the battery management module 2 is turned on. The self-resetting power switch 7 and the interlock relay 8 together achieve the interlocking of the battery management module 2.

[0055] Specifically, when the operating machinery requires power, the operator can press the self-reset power switch 7 for a preset duration, such as three seconds. The battery management module 2 then enters a preparation mode, and the low-voltage battery pack 4 begins a self-test. During the self-test, if a fault is detected, a fault indicator light illuminates, prompting the operator to troubleshoot and repair the problem. If no fault is detected, the battery management module 2 wakes up the DC-DC converter module 16 and performs a self-test. After the DC-DC converter module 1 is found to be fault-free, it begins collecting information such as the current, voltage, and temperature of the low-voltage battery pack 4 to ensure its safe and normal operation. The interlock relay 8 is interconnected with the self-reset power switch 7. Through the interlock relay 8, short circuits in the battery management module 2 can also be effectively prevented, thus ensuring the safe operation of the battery management module 2.

[0056] Furthermore, such as Figure 2As shown, based on the above embodiments, the ignition switch module 3 in this embodiment includes an ignition lock 31, a first relay 32, a second relay 33, and a third relay 34; the first relay 32 is connected to the ACC state of the ignition lock 31, the second relay 33 is connected to the first ON state of the ignition lock 31, and the third relay 34 is connected to the second ON state of the ignition lock 31. The ignition lock 31 is also connected to the battery management module 2; when the ignition lock 31 is in the ACC state, the first relay 32 is turned on, and the battery management module 2 controls the low-voltage battery pack 4 to... ACC power supply; when the ignition lock 31 is in the first ON state, the second relay 33 is turned on, and the battery management module 2 controls the low-voltage battery pack 4 to provide the first ON power supply; when the ignition lock 31 is in the second ON state, the third relay 34 is turned on, and the battery management module 2 controls the low-voltage battery pack 4 to provide the second ON power supply; when the ignition lock 31 requires low-voltage power supply and the low-voltage battery pack 4 has insufficient power, the battery management module 2 controls the DC-DC conversion module 1 to convert the voltage of the high-voltage battery pack 5 to the target voltage to charge the low-voltage battery pack 4.

[0057] Specifically, the ignition switch module 3 is connected to the constant power distribution via a 10A fuse. The operator selects to switch the ignition lock 31 from the LOCK position to the ACC position according to actual operational needs. The ignition lock 31 then controls the first relay 32 to close via a hardwire, allowing low-voltage electrical equipment connected to the ACC to operate normally, such as the infotainment system within the work machinery. When the ignition lock 31 is switched to the ON position, it controls the second relay 33 and the third relay 34 to close via a hardwire. The second relay 33 provides power to vehicle safety-related control units, while the third relay 34 provides ON power to all other control units in the vehicle besides those for vehicle safety, ensuring the normal operation of all electrical equipment in the work machinery.

[0058] The battery management module 2 controls the power supply to the corresponding low-voltage electrical equipment based on the state of the ignition lock 31. This also includes the situation where, when the ignition lock 31 switches to STA, indicating a need for power supply, the battery management module 2 controls the high-voltage battery pack 5 to output high-voltage electricity to ensure the high-voltage power supply for the operating machinery and the entire vehicle.

[0059] Furthermore, such as Figure 2 As shown, based on the above embodiments, the high and low voltage battery integrated control power supply system in this embodiment also includes a power supply switch module; the power supply switch module is located inside the housing A, one end of the power supply switch module is connected to the battery management module 2, and the other end of the power supply switch module is connected to the ignition switch module 3 and the low voltage electrical equipment; the power supply switch module is used to control the on / off connection between the low voltage electrical equipment and the ignition switch module 3 and the low voltage battery pack 4.

[0060] The power supply switch module includes a main positive relay 61 and a constant power relay 62. One end of the main positive relay 61 is connected to the battery management module 2, and the other end of the main positive relay 61 is connected to the low-voltage electrical equipment. One end of the constant power relay 62 is connected to the battery management module 2, and the other end of the constant power relay 62 is connected to the ignition switch module 3. The main positive relay 61 is used to control the connection and disconnection between the low-voltage electrical equipment and the low-voltage battery pack 4, and the constant power relay 62 is used to control the connection and disconnection between the ignition switch module 3 and the low-voltage battery pack 4.

[0061] Specifically, the power supply switch module controls the electrical switches. Low-voltage power includes constant power and power for other low-voltage equipment, such as air conditioning, audio systems, and other in-vehicle low-voltage equipment. Constant power mainly includes the power supplied to the ignition switch module 3. The battery management module 2 controls the on / off state of the main positive relay 61 and the constant power relay 62. When constant power is required, the battery management module 2 controls the constant power relay 62 to close, thereby enabling the low-voltage battery pack 4 to provide constant power output, allowing the ignition switch module 3 to enter its working mode. When low-voltage equipment requires power, the battery management module 2 controls the main positive relay 61 to close, allowing the low-voltage battery pack 4 to provide 24V low-voltage battery power, ensuring the low-voltage power supply for the operating machinery. The main positive relay 61 and the constant power relay 62 enable separate power supply control for constant and low-voltage power, without interference between them, effectively ensuring power supply. Furthermore, the ability to independently control constant and low-voltage power supplies ensures electrical safety and facilitates fault diagnosis and maintenance.

[0062] Both the main positive relay 61 and the constant voltage relay 62 are integrated inside the enclosure A, which reduces the cable length between them and the battery management module. Alternatively, the battery management module 2 can be connected to the low-voltage battery pack 4 and the high-voltage battery pack 5 via integrated soldering. The output terminals of both the main positive relay 61 and the constant voltage relay 62 pass through enclosure A. Plug-in holes can be provided on the outer shell of enclosure A, allowing external electrical equipment to be directly connected via terminal plug-ins, facilitating operation, maintenance, and relocation. The main positive relay 61 can be connected to a 50A, 30A, or 100A fuse, depending on the actual power requirements. In other words, the power supply inside enclosure A has two output ports: a constant voltage output port and a main positive voltage output port, thus meeting the normal power supply needs of the ignition switch module 3 and other low-voltage electrical equipment.

[0063] Based on the same general inventive concept, this invention also protects a high- and low-voltage battery integrated control power supply method.

[0064] Figure 3This is a schematic flowchart of the high and low voltage battery integrated control power supply method provided in an embodiment of the present invention.

[0065] like Figure 3 As shown, the high and low voltage battery integrated control power supply method provided in this embodiment of the invention can be executed by the high and low voltage battery integrated control power supply system of any of the above embodiments, and the method mainly includes the following steps;

[0066] 301. Obtain the closed position signal of the ignition switch module.

[0067] In a specific implementation process, the closed position signal of the ignition switch module 3 is first acquired, that is, the position of the ignition switch module 3 controlled by the operator is first determined, including the key ACC position, key ON position, key STA position, etc. This can be acquired either by directly reading from the central control system or by acquiring it through sensors, and the current closed position signal of the ignition switch is determined by electrical signals.

[0068] 302. When the closed position signal indicates that low-voltage power supply is required, collect the status parameters of the low-voltage battery pack.

[0069] The ignition switch module 3 has several closing position signals. When high-voltage power is required, the battery management module 2 controls the high-voltage battery pack 5 to supply power. When the closing position signal indicates that low-voltage power is required, it is necessary to determine whether the low-voltage battery pack 4 can supply power normally. Therefore, it is necessary to collect the status parameters of the low-voltage battery pack 4. These status parameters can include information such as temperature, voltage, current, and charge level. The data can be collected through sensors to accurately read the status parameters of the low-voltage battery pack 4, thereby enabling more reasonable analysis and control.

[0070] 303. If the status parameters indicate that the low-voltage battery pack is fault-free, then control the low-voltage battery pack to provide low-voltage power supply according to the closed position signal of the ignition switch module.

[0071] If the status parameters indicate that the low-voltage battery pack 4 is fault-free, including normal output current, normal output voltage, normal operating temperature, and normal charge level, then the low-voltage battery pack 4 can be determined to be working normally. Therefore, according to the closed position signal of the ignition switch module 3, the low-voltage battery pack 4 can be controlled to provide the corresponding low-voltage power supply to ensure the normal operation of low-voltage electrical equipment, etc.

[0072] 304. If the status parameter indicates that the low-voltage battery pack is low on power, the DC-DC converter module is controlled to convert the voltage of the high-voltage battery pack to the target voltage to charge the low-voltage battery pack, so that the low-voltage battery pack can provide low-voltage power.

[0073] After testing, it was determined that the status parameters indicated that the low-voltage battery pack 4 was low on power, meaning that it could not function properly to ensure low-voltage power supply. Therefore, it was necessary to recharge the low-voltage battery pack 4 by switching from the high-voltage battery pack 5 to the low-voltage battery pack 4. The low-voltage battery pack 4 could be determined by directly checking its battery charge, its output current, or its supply voltage, etc.

[0074] The method of using the high-voltage battery pack 5 to charge the low-voltage battery pack 4 is as follows: when the battery management module 2 determines that the high-voltage battery pack 5 needs to charge the low-voltage battery pack 4, the battery management module 2 activates the DC-DC conversion module 1, making the DC-DC conversion module 1 work. Then, it controls the DC-DC conversion module 1 to convert the voltage of the high-voltage battery pack 5 to the target voltage, thereby using the target voltage to charge the low-voltage battery pack 4, so as to ensure that the low-voltage battery pack 4 can be in a normal working state, thereby realizing the normal operation of the low-voltage electrical equipment.

[0075] During application, the low-voltage power supply is controlled by the battery management module 2. Under normal operation, if the battery management module 2 switches to ACC, it controls the low-voltage battery pack 4 to supply low-voltage ACC power. If it switches to ON power, it controls the low-voltage battery pack 4 to supply ON power. Each case will not be listed and explained one by one.

[0076] Furthermore, the overall power supply control process is explained below. First, when the vehicle requires power, the user presses the self-resetting power switch 7 for three seconds. The battery management module 2 then enters a preparation mode, controlling the interlock relay 8 to activate and enter its operating mode. The low-voltage battery pack 4 then performs a self-check. If a fault is detected, an alarm is triggered to prompt repair. If no fault is detected, the voltage, temperature, and current values ​​of the low-voltage battery pack 4 are collected. Based on these values, the real-time status and other parameters of the low-voltage battery pack 4 are monitored, thereby controlling the constant power relay 62 to activate and supply constant power to the vehicle from the low-voltage battery pack 4. The constant power output terminal of the low-voltage battery pack 4 is connected to one of the ports in the chassis fuse box, thus providing constant power distribution to the vehicle.

[0077] Ignition lock 31 is connected to the constant power output section via a 10A fuse. When the operator switches ignition lock 31 from the LOCK position to the ACC position as needed, ignition lock 31 controls the first relay 32 to close and conduct, allowing the low-voltage battery pack 4 to power the infotainment equipment connected to the ACC. When the operator switches ignition lock 31 from the LOCK position to the ON position as needed, ignition lock 31 controls the second relay 33 and the third relay 34 to close and conduct. The second relay 33 supplies ON power to the vehicle safety-related control units, and the third relay 34 supplies ON power to other control units in the vehicle besides those for vehicle safety. This allows for different power supply controls of the low-voltage battery pack 4 based on the power supply requirements switched by ignition lock 31.

[0078] Then, the battery management module 2 detects the ON signal. If an ON signal is detected, the battery management module 2 initiates the detection and management of the high-voltage battery pack 5. The battery management module 2 interacts with the vehicle and the DC-DC converter module 1 via the CAN bus. At the same time, the DC-DC converter module 1 is powered by the 10A fuse at its constant power output terminal. The DC-DC converter module 1 is activated by the battery management module 2 and connects to the vehicle's CAN bus for information exchange. Then, it checks whether there is an alarm in the high-voltage battery pack 5. If there is an alarm, it performs troubleshooting and repair. If there is no alarm, it controls the main positive relay 61 to close its output. The voltage output by the main positive relay 61 can simultaneously output multiple current signals in the fuse box to supply different electrical devices, ensuring the normal operation of multiple electrical devices.

[0079] Then, after ensuring the vehicle has power, under normal operating conditions, the battery management module 2 monitors and calculates the charge and current of the 24V low-voltage battery pack 4 in real time. When the remaining charge of the low-voltage battery pack 4 is less than 30% of its total capacity or the output current is greater than 20A, the battery management module 2 wakes up the DC-DC converter module 1 and its corresponding high-voltage power distribution circuit. The DC-DC converter module 1 converts the high voltage of the high-voltage battery pack 5 to 24V to charge the low-voltage battery pack 4. When the charge of the low-voltage battery pack 4 exceeds 95%, charging stops. Then, the ON signal is detected. When the battery management module 2 detects no ON signal for 5 seconds, it indicates that there is no high-voltage power demand, and the vehicle can enter a low-power sleep mode, while only monitoring the parameter status of the low-voltage battery pack 4. Battery management module 2 shuts down the main positive relay 61, and the vehicle only has constant power output. If the vehicle has no power demand, the operator can press and hold the self-resetting power switch 7 for a certain period of time to shut down the low-voltage battery pack 4. The low-voltage battery pack 4 will no longer supply power to the outside. Battery management module 2 controls the interlock relay 8 to open, and all electrical equipment and control units stop working. The vehicle enters a dormant parking state.

[0080] Based on the same general inventive concept, this invention also protects a work machine, which includes a high- and low-voltage battery integrated control power supply system as described in any of the above embodiments, or a high- and low-voltage battery integrated control power supply method as described in the above embodiments. For example, the work machine includes a pure electric work machine or a hybrid electric work machine, etc.

[0081] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0082] like Figure 4 As shown, the electronic device may include a processor 410, a communication interface 420, a memory 430, and a communication bus 440. The processor 410, communication interface 420, and memory 430 communicate with each other via the communication bus 440. The processor 410 can call logic instructions in the memory 430 to execute a high-low voltage battery integrated control power supply method. This method includes: acquiring the closed position signal of the ignition switch module; when the closed position signal indicates a need for low-voltage power supply, acquiring the status parameters of the low-voltage battery pack; if the status parameters indicate that the low-voltage battery pack is fault-free, controlling the low-voltage battery pack to provide low-voltage power supply according to the closed position signal of the ignition switch module; if the status parameters indicate that the low-voltage battery pack has insufficient power, controlling the DC-DC converter module to convert the voltage of the high-voltage battery pack to a target voltage to charge the low-voltage battery pack, thereby enabling the low-voltage battery pack to provide low-voltage power supply.

[0083] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0084] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer is able to execute the high and low voltage battery integrated control power supply method provided by the above methods, the method including: acquiring the closed position signal of the ignition switch module; when the closed position signal indicates that low voltage power supply is required, acquiring the status parameters of the low voltage battery pack; if the status parameters indicate that the low voltage battery pack is fault-free, controlling the low voltage battery pack to provide low voltage power supply according to the closed position signal of the ignition switch module; if the status parameters indicate that the low voltage battery pack has insufficient power, controlling the DC-DC conversion module to convert the voltage of the high voltage battery pack to a target voltage to charge the low voltage battery pack, so that the low voltage battery pack provides low voltage power supply.

[0085] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements the above-described high- and low-voltage battery integrated control power supply methods. The method includes: acquiring a closed position signal of an ignition switch module; when the closed position signal indicates that low-voltage power supply is required, acquiring status parameters of a low-voltage battery pack; if the status parameters indicate that the low-voltage battery pack is fault-free, controlling the low-voltage battery pack to provide low-voltage power supply according to the closed position signal of the ignition switch module; if the status parameters indicate that the low-voltage battery pack has insufficient power, controlling the DC-DC converter module to convert the voltage of the high-voltage battery pack to a target voltage to charge the low-voltage battery pack, so that the low-voltage battery pack provides low-voltage power supply.

[0086] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0087] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high- and low-voltage battery integrated control and power supply system, characterized in that, include: Ignition switch module, high-voltage battery pack, low-voltage battery pack, battery management module, and DC-DC converter module; The high-voltage battery pack, the low-voltage battery pack, and the battery management module are integrated inside the same housing. Both the high-voltage and low-voltage battery packs are connected to the battery management module. The ignition switch module is also connected to the battery management module. The DC-DC converter module is connected to both the high-voltage and low-voltage battery packs. The high-voltage and low-voltage battery packs are connected to the battery management module via plug-in terminals. The housing shell is provided with plug-in holes, through which the DC-DC converter module and the ignition switch module are connected to the plug-in terminals. When the ignition switch module is closed, the battery management module determines the ignition switch module's closed position signal. When the closed position signal and the low-voltage battery pack's status parameters indicate that the DC-DC converter module needs to be activated, the battery management module controls the DC-DC converter module to convert the high-voltage battery pack's voltage to a target voltage to charge the low-voltage battery pack. When the low-voltage battery pack's status parameters all indicate normal operation, the DC-DC converter module is in sleep mode. It also includes an interlock module; One end of the interlock module is connected to the battery management module, and the other end of the interlock module is connected to the low-voltage battery pack; The interlock module is used to control the interlock between the low-voltage battery pack and the battery management module; The interlock module includes a self-resetting power switch and an interlock relay; The self-resetting power switch is located between the battery management module and the low-voltage battery pack. One end of the interlock relay is connected to the battery management module, and the other end of the interlock relay is connected to the low-voltage battery pack. The interlock relay is also connected to the self-resetting power switch. The self-resetting power switch is used to control the on / off state of the battery management module, and the interlocking relay is used to control the battery management module to perform a self-test after being turned on. The self-resetting power switch and the interlocking relay together realize the interlocking between the low-voltage battery pack and the battery management module. When the self-reset power switch is pressed, the battery management module enters the working preparation mode, and the low-voltage battery pack begins to perform a self-test. If a fault is found during the self-test, the operator is prompted to troubleshoot and repair the fault. If no fault is found, the battery management module wakes up the DC-DC converter module, which then performs a self-test. Once the DC-DC converter module is fault-free, it begins to collect the status parameters of the low-voltage battery pack.

2. The high and low voltage battery integrated control and power supply system according to claim 1, characterized in that, The ignition switch module includes an ignition lock, a first relay, a second relay, and a third relay; The first relay is connected to the ACC of the ignition lock, the second relay is connected to the first ON of the ignition lock, the third relay is connected to the second ON of the ignition lock, and the ignition lock is also connected to the battery management module. When the ignition lock is in the ACC state, the first relay is turned on, and the battery management module controls the low-voltage battery pack to provide ACC power; when the ignition lock is in the first ON state, the second relay is turned on, and the battery management module controls the low-voltage battery pack to provide the first ON power; when the ignition lock is in the second ON state, the third relay is turned on, and the battery management module controls the low-voltage battery pack to provide the second ON power. When the ignition lock requires low-voltage power and the low-voltage battery pack is low on power, the battery management module controls the DC-DC converter to convert the voltage of the high-voltage battery pack to the target voltage to charge the low-voltage battery pack.

3. The high and low voltage battery integrated control and power supply system according to claim 1, characterized in that, It also includes a power supply switch module; The power supply switch module is located inside the enclosure. One end of the power supply switch module is connected to the battery management module, and the other end of the power supply switch module is connected to the ignition switch module and the low-voltage electrical equipment. The power supply switch module is used to control the connection and disconnection between the low-voltage electrical equipment and the ignition switch module and the low-voltage battery pack.

4. The high and low voltage battery integrated control and power supply system according to claim 3, characterized in that, The power supply switch module includes a main positive relay and a constant power relay; One end of the main positive relay is connected to the battery management module, and the other end of the main positive relay is connected to the low-voltage electrical equipment. One end of the constant power relay is connected to the battery management module, and the other end of the constant power relay is connected to the ignition switch module. The main positive relay is used to control the connection and disconnection between the low-voltage electrical equipment and the low-voltage battery pack, and the constant current relay is used to control the connection and disconnection between the ignition switch module and the low-voltage battery pack.

5. A method for integrated control and power supply of high and low voltage batteries, characterized in that, The method, applied to the high- and low-voltage battery integrated control power supply system as described in any one of claims 1-4, comprises: Obtain the closed position signal of the ignition switch module; When the closed position signal indicates that low-voltage power supply is required, the status parameters of the low-voltage battery pack are collected. If the status parameter indicates that the low-voltage battery pack is fault-free, then the low-voltage battery pack is controlled to provide low-voltage power supply according to the closed position signal of the ignition switch module. If the status parameter indicates that the low-voltage battery pack is low on power, the DC-DC converter module is controlled to convert the voltage of the high-voltage battery pack to the target voltage to charge the low-voltage battery pack, so that the low-voltage battery pack can provide low-voltage power.

6. A type of operating machinery, characterized in that, The operating machinery includes the high and low voltage battery integrated control power supply system as described in any one of claims 1-4, or is used to perform the high and low voltage battery integrated control power supply method as described in claim 5.

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