Complete machine starting system for heavy engineering machinery

Abstract

The invention discloses a complete machine starting system for heavy engineering machinery, which comprises a complete machine starting system, and the complete machine starting system comprises a matrix power supply system, a floating charge system and a starter system; the matrix power supply system comprises a starting power supply and a parallel connection device, and a plurality of channels are arranged in the starting power supply. The matrix power supply system, the floating charge system and the starter system are combined to form the complete machine starting system to work, the complete machine starting system outputs a 120v and 95A constant-voltage current-limiting power supply through a locomotive power supply and is directly connected with a starting power supply in parallel, and meanwhile, a direct-current bus path is led out to supply direct current to other vehicle-mounted power supplies such as a vehicle-mounted fan, a lighting device and an air conditioner. A common power supply function of good starting of the locomotive and vehicle-mounted power utilization can be realized; dC isolation is not used in the structure any more, the constant voltage is set as a floating voltage point of the battery and is generally 90% of the total voltage of the SOC of the battery, the capacity of the battery is stable, and the maintained voltage is stable.

Description

Technical Field

[0001] The invention relates to the technical field of whole-machine starting for heavy machinery, in particular to a whole-machine starting system for heavy engineering machinery. Background Art

[0002] The starting system consists of a battery, an ignition switch, a starting relay, a starter, etc. The function of the starting system is to convert the battery's electrical energy into mechanical energy through the starter to start the engine.

[0003] The heavy-duty engineering machinery of the prior art has poor battery self-repair capabilities, is difficult to repair when the battery module is biased or an abnormal alarm occurs, and cannot cut off the protection switch under abnormal circumstances, which also affects the ignition function and cannot achieve abnormal ignition. Summary of the invention

[0004] The object of the present invention is to provide a whole machine starting system for heavy engineering machinery to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a whole-machine starting system for heavy engineering machinery, comprising a whole-machine starting system, the whole-machine starting system comprising a matrix power supply system, a floating charging system and a starter system; the matrix power supply system comprises a starting power supply and a parallelizer, the starting power supply is provided with a plurality of channels, the channels are connected by a plurality of free modules, the channels are bridged with a parallelizer, the starter system comprises a diesel engine and a starter, the starter is bridged with the diesel engine and connected in parallel with the matrix power supply system, the floating charging system comprises vehicle-mounted power and a protection switch, the protection switch is bridged with the vehicle-mounted power and connected in series with the matrix power supply system, the whole-machine starting system outputs a constant voltage and current limiting power supply in parallel with the starting power supply through an interface of a locomotive power supply, and another interface of the locomotive power supply is connected in series with the vehicle-mounted power supply.

[0006] The matrix power system, floating charging system and starter system are combined into a complete starting system. The complete starting system outputs a 120v, 95A constant voltage and current limiting power supply through the locomotive power supply and directly connects the starting power supply in parallel. At the same time, the DC bus path is drawn out to supply DC power to other on-board power supplies such as on-board fans, lighting, air conditioning, etc., which can realize the common power supply function of good locomotive starting and on-board power consumption; and the comprehensive Figure 1 and Figure 2 , DC isolation is no longer used in this structure. Since the constant voltage is set to the floating pressure point of the battery, which is generally the total voltage of the battery SOC 90%, the battery capacity is stable and the maintained voltage is stable;

[0007] As a further solution of the present invention: one interface of the parallelizer is bridged with the parallelizer, another interface of the parallelizer is bridged with the communication unit, and the communication unit is serially connected with a communication port.

[0008] In the matrix power system, each channel is connected in parallel and bridged with a communication unit for communication. The communication unit carries the system protection function and coordinates the internal protection of the battery. The matrix power system is equipped with a bus protection switch and is managed by the communication unit. In addition to the internal management of each battery module, the communication unit intelligently identifies the information of each battery channel externally, such as temperature, current, voltage mutation, etc., and cuts off the protection switch under abnormal circumstances without affecting the ignition function.

[0009] As a further solution of the present invention: the combination state of the free modules is that a plurality of free modules are connected in series to form a channel, and the channels are connected in parallel to form a combination.

[0010] As a further solution of the present invention: the communication unit is connected to the free module through a start switch bridge, and the communication unit and the starter are electrically connected to the free module through the start switch.

[0011] As a further solution of the present invention: the channels are arranged in four groups, and the four groups of channels constitute a standard four-channel grouping mode.

[0012] As a further solution of the present invention: the free module is provided with a power port, a balancing control unit, a dual-bridge switch component and a diode, the dual-bridge switch component and the diode are connected in parallel and connected to the free module, a plurality of grouped power supplies are provided in the balancing control unit, an interface of the balancing control unit is directly bridged with a power port, and another interface of the balancing control unit is directly bridged with a parallel branch of the free module.

[0013] As a further solution of the present invention: a protective resistor is internally bridged in the free module.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The whole machine starting system is combined with the matrix power system, floating charging system and starter system. The whole machine starting system outputs 120V, 95A constant voltage and current limiting power supply through the locomotive power supply and directly connects the starting power supply in parallel. At the same time, the DC bus path is led out to supply DC power to other on-board power such as on-board fans, lighting, air conditioning, etc., which can realize the common power supply function of good locomotive starting and on-board power. In addition, DC isolation is no longer used in this structure. Since the constant voltage is set to the floating pressure point of the battery, generally the total pressure of the battery SOC 90%, the battery capacity is stable and the voltage maintained is stable;

[0016] 2. In the matrix power system, each channel is connected in parallel with the communication unit for communication. The communication unit carries the system protection function and cooperates with the internal protection of the battery. The matrix power system is equipped with a bus protection switch and is managed by the communication unit. In addition to the internal management of each battery module, the communication unit intelligently identifies the information of each battery channel, such as temperature, current, voltage mutation, etc., and cuts off the protection switch in abnormal situations without affecting the ignition function.

[0017] 3. In the matrix power system control strategy, there are three levels of strategies. For example, three channels can support ignition. When a single channel loses power, it is only a level 3 fault and the system can operate normally. When two channels lose power, it is a level 2 fault, the protection switch is disconnected, and the locomotive prompts maintenance, and also supports abnormal ignition;

[0018] 4. In the matrix power system, combined with the battery self-repair function, when a module is biased, the free module will automatically enter the protection state and self-repair. At this time, the parallelizer will cut off the channel and signal the communication unit, and at the same time cut off the channel. The system reports a level 3 fault and operates normally. After the free module is repaired, the channel voltage is restored, and the parallelizer will automatically compare the system bus voltage. When the voltage is close to the threshold and meets the parallel conditions, the parallelizer connects the channel and the communication unit clears the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A circuit diagram of the whole machine starting system of the present invention;

[0020] Figure 2 is a circuit diagram of the free module of the present invention;

[0021] In the figure: 1. Free module; 2. Balance control unit; 3. Double-bridge switch assembly; 4. Locomotive power supply; 5. On-board power; 6. Diesel engine; 7. Communication port; 8. Starter; 9. Start switch; 10. Communication unit; 11. Parallel; 12. Protection switch; 13. Protection resistor; 14. Complete machine starting system. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0024] See also Figures 1-2 In an embodiment of the present invention, a whole machine starting system for heavy engineering machinery includes a whole machine starting system 14, wherein the whole machine starting system 14 includes a matrix power supply system, a floating charging system and a starter system; the matrix power supply system includes a starting power supply and a parallelizer 11, wherein the starting power supply is provided with a plurality of channels, wherein the channels are connected by a plurality of free modules 1, wherein the channels are bridged with the parallelizer 11, wherein the starter system includes a diesel engine 6 and a starter 8, wherein the starter 8 is bridged with the diesel engine 6 and connected in parallel with the matrix power supply system, wherein the floating charging system includes a vehicle-mounted power supply 5 and a protection switch 12, wherein the protection switch 12 is bridged with the vehicle-mounted power supply 5 and connected in series with the matrix power supply system, wherein the whole machine starting system 14 outputs a constant voltage and current limiting power supply in parallel with the starting power supply through an interface of the locomotive power supply 4, and another interface of the locomotive power supply 4 is connected in series with the vehicle-mounted power supply 5.

[0025] The matrix power supply system, floating charging system and starter system are combined into a complete machine starting system 14, which outputs a 120V, 95A constant voltage and current limiting power supply through the locomotive power supply 4 and directly connects the starting power supply in parallel, while leading out a DC bus path to supply DC power to other on-board power supplies 5 such as on-board fans, lighting, air conditioning, etc., so as to realize the common power supply function of good locomotive starting and on-board power 5; and the comprehensive Figure 1 and Figure 2 , DC isolation is no longer used in this structure. Since the constant voltage is set to the floating pressure point of the battery, which is generally the total voltage of the battery SOC 90%, the battery capacity is stable and the maintained voltage is stable;

[0026] In the matrix power system control strategy, there are three levels of strategies. For example, three channels can support ignition. When a single channel loses power, it is only a level 3 fault and the system can operate normally. When two channels lose power, it is a level 2 fault, the protection switch is disconnected, and the locomotive prompts maintenance, and also supports abnormal ignition;

[0027] As a further solution of the present invention: one interface of the parallelizer 11 is bridged with the parallelizer 11 , and another interface of the parallelizer 11 is bridged with the communication unit 10 , and the communication unit 10 is serially connected with the communication port 7 .

[0028] In the matrix power system, each channel is provided with a parallel connection 11 and a communication unit 10 for bridge communication, wherein the communication unit 10 carries the system protection function and cooperates with the internal protection of the battery, and the matrix power system is provided with a bus protection switch, which is managed by the communication unit 10. In addition to the internal management of each battery module, the communication unit 10 externally intelligently identifies the information of each battery channel, such as temperature, current, voltage mutation, etc., and cuts off the protection switch in an abnormal situation, while not affecting the ignition function;

[0029] In the matrix power supply system, combined with the battery self-repair function, when a module is biased, the free module 1 will automatically enter the protection state and self-repair. At this time, the parallelizer 11 will cut off the channel and signal the communication unit 10, and at the same time cut off the channel. The system reports a level 3 fault and operates normally. After the free module 1 is repaired, the channel voltage is restored, and the parallelizer 11 automatically compares the system bus voltage. When the voltage is close to the threshold and meets the parallel conditions, the parallelizer 11 connects the channel and the communication unit 10 removes the fault;

[0030] As a further solution of the present invention: the combination state of the free modules 1 is that a plurality of free modules 1 are connected in series to form a channel, and the channels are connected in parallel to form a combination.

[0031] The free module 1 formed by connecting each channel group has a strong converging capacity, can realize instant ignition and good stability, and occupies a small space, reducing the energy consumption of heavy engineering machinery during operation;

[0032] As a further solution of the present invention: the communication unit 10 is bridged into the free module 1 through the start switch 9 , and the communication unit 10 and the starter 8 are electrically connected to the free module 1 through the start switch 9 .

[0033] After the switch 9 is started, power can be supplied to the communication unit 10 and the starter 8 at the same time, and the matrix power supply system works normally at this time.

[0034] As a further solution of the present invention: the channels are arranged in four groups, and the four groups of channels constitute a standard four-channel grouping mode.

[0035] Similarly, the free module 1 formed by connecting the channels has a strong flow converging capacity, can realize instantaneous ignition and good stability, and occupies a small space, thereby reducing the energy consumption of heavy engineering machinery during operation.

[0036] As a further solution of the present invention: the free module 1 is provided with a power port, a balancing control unit 2, a dual-bridge switch component 3 and a diode. The dual-bridge switch component 3 and the diode are connected in parallel and connected to the free module 1. The balancing control unit 2 is provided with multiple grouped power supplies. The interface of the balancing control unit 2 is directly bridged with a power port, and the other interface of the balancing control unit 2 is directly bridged with the parallel branch of the free module 1.

[0037] By setting two diodes with opposite directions, when the device is overcharged, the double-bridge switch component 3 on one side is disconnected and protects the circuit, and when the device is over-discharged, the double-bridge switch component 3 on the other side is disconnected and also protects the circuit;

[0038] As a further solution of the present invention: a protective resistor 13 is bridged inside the free module 1 .

[0039] The protection resistor 13 can be used to protect the circuit. When the breakdown voltage occurs, the circuit is forcibly disconnected to protect the circuit from damage.

[0040] The working principle of the present invention is: the matrix power supply system, floating charging system and starter system are combined into a complete machine starting system 14, the complete machine starting system 14 outputs a 120v, 95A constant voltage and current limiting power supply through the locomotive power supply 4 and directly connects the starting power supply in parallel, and at the same time leads out a DC bus path to supply DC power to other on-board power supplies 5 such as on-board fans, lighting, air conditioning, etc., so as to realize the common power supply function of the locomotive starting well and the on-board power supply 5; and the comprehensive Figure 1 and Figure 2 In this structure, DC isolation is no longer used. Since the constant voltage is set to the floating pressure point of the battery, which is generally 90% of the total voltage of the battery SOC, the battery capacity is stable and the maintained voltage is stable. In the matrix power system, each channel is provided with a parallel connection 11 and a communication unit 10 bridge for communication, wherein the communication unit 10 carries the system protection function and cooperates with the internal protection of the battery. The matrix power system is provided with a bus protection switch and is managed by the communication unit 10. In addition to the internal management of each battery module, the communication unit 10 externally intelligently identifies the information of each battery channel, such as temperature, current, voltage mutation, etc., and cuts off the protection switch under abnormal conditions without affecting the ignition function.

[0041] What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A whole machine starting system for heavy engineering machinery, comprising a whole machine starting system (14), wherein the whole machine starting system (14) comprises a matrix power supply system, a floating charging system and a starter system; characterized in that: The matrix power supply system comprises a starting power supply and a parallelizer (11), wherein the starting power supply is provided with a plurality of channels, wherein the channels are connected by a plurality of free modules (1), wherein the channels are bridged with the parallelizer (11), wherein the starter system comprises a diesel engine (6) and a starter (8), wherein the starter (8) is bridged with the diesel engine (6) and connected in parallel with the matrix power supply system, wherein the floating charging system comprises an on-board power supply (5) and a protection switch (12), wherein the protection switch (12) is bridged with the on-board power supply (5) and connected in series with the matrix power supply system, wherein the whole machine starting system (14) outputs a constant voltage and current limiting power supply in parallel with the starting power supply through an interface of the locomotive power supply (4), and another interface of the locomotive power supply (4) is connected in series with the on-board power supply (5).

2. A whole machine starting system for heavy engineering machinery according to claim 1, characterized in that: One interface of the parallelizer (11) is bridged with the parallelizer (11), and another interface of the parallelizer (11) is bridged with the communication unit (10), and the communication unit (10) is serially connected with a communication port (7).

3. A whole machine starting system for heavy engineering machinery according to claim 2, characterized in that: The combination state of the free modules (1) is that a plurality of free modules (1) are connected in series to form a channel, and the channels are connected in parallel to form a combination.

4. A whole machine starting system for heavy engineering machinery according to claim 3, characterized in that: The communication unit (10) is bridged into the free module (1) via a start switch (9), and the communication unit (10) and the starter (8) are electrically connected to the free module (1) via the start switch (9).

5. A whole machine starting system for heavy engineering machinery according to claim 4, characterized in that: The channels are arranged in four groups, and the four groups of channels constitute a standard four-channel grouping mode.

6. A whole machine starting system for heavy engineering machinery according to claim 5, characterized in that: The free module (1) is provided with a power supply port, a balancing control unit (2), a dual-bridge switch component (3) and a diode. The dual-bridge switch component (3) and the diode are connected in parallel and then connected to the free module (1). The balancing control unit (2) is provided with a plurality of grouped power supplies. An interface of the balancing control unit (2) is directly bridged with a power supply port, and another interface of the balancing control unit (2) is directly bridged with a parallel branch of the free module (1).

7. A whole machine starting system for heavy engineering machinery according to claim 6, characterized in that: The free module (1) is internally bridged with a protective resistor (13).

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