JP2001213247A - Electric power, supply system for self-propelled vehicle and its power managing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To preferentially perform electric power supply to electric apparatuses of various portions, and to perform determination of its order of priority in accordance with characteristics of each vehicle. SOLUTION: This system includes a power source 2, a power source controller 5, a feeding bus 15, a plurality of load apparatuses 32 receiving power from the feeding bus 15, and a two-way communication line 17 sending out each state value of the plurality of load apparatuses 32 to the power source controller 5 and load amount control signals controlling each load amount of the plurality of load apparatuses on the basis of these state values. Timing of electric power replenishment or charging is appropriated for realizing minimization of feed energy. This system includes a plurality of feeding apparatuses 41 connected in parallel to the feeding bus 15 and each interposed between the plurality of load apparatuses 32 and the feeding bus 15. The feeding apparatuses 41 feed power to the plurality of load apparatuses via repeaters 41. By doubling the feeding bus 15 and the two-way communication line 17, first aid activity can be safely performed during a disaster.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply system for a self-propelled vehicle and a power management method for the same, and more particularly, to a power supply for a self-propelled vehicle which executes a wide range of operations with a reasonable power supply. The present invention relates to a system and a power management method thereof.

[0002]

2. Description of the Related Art In a work area of a wide area work such as a civil engineering work and a construction work, a heavy machine is transported, work is shared by group management of a plurality of work vehicles, plural kinds of work of each work vehicle, each work vehicle is performed. It is preferable that the drive / control of a plurality of electrical parts in the above is executed individually or in a group management manner in that the efficiency of performing the entire work can be improved.

In one vehicle in such a work area, it is required to supply power from a common power source to various electronic and electric devices. Examples of such devices include a motor that is a driving power source for self-propelled vehicles, a transmission that controls running and steering, an electric motor that drives a hydraulic motor for heavy mechanical work that drives a fork shovel, a wireless device for transmission and reception,
There are various power-requiring devices such as air-conditioning motors, audio devices, display devices, and computers.

A known power supply system that supplies power to such various devices distributes and supplies power from a common power supply to each device in a tree shape. If the power supply line or the repeater, which is a power distribution device, is damaged on the upstream side,
Or, if a fuse or breaker interposed in multiple parts of the tree structure operates, the power supply is permanently or temporarily supplied to the equipment forming the partial tree downstream from the damage point or cutoff point. Will be disrupted. A tree-structured power supply system of an ambulance vehicle located in the work area to deal with an unexpected accident is a heavy mechanical device part driven for emergency, a self-propelled device for rushing to the site There is a serious problem in that it is not possible to execute the power supply to the air conditioner unit in preference to the power supply to the air conditioner unit. Vehicles in a work area such as a power plant, vehicles in a wide area where a building has collapsed due to a natural disaster, and the like have their own characteristics.

Further, in a known power supply system that supplies power to a variety of electric devices in a tree form from a single battery power supply, a drop in the power supply voltage when power consumption is high at one position adversely affects the entire system. Will have an effect. Charging to a battery power source depends on the battery voltage, and depending on the voltage, charging cannot be performed properly.

In vehicles that rely on batteries for power supply,
It is required that the power supply to the electric devices in various parts be executed with priority and certainty. It is further desired that the determination of the priority be performed according to the characteristics of the vehicle. Further, it is also an important issue that a space for arranging various devices in a narrow space in a vehicle has a high use efficiency.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply system for a self-propelled vehicle and a power management method for the power supply system, in which power supply to electric devices in various parts can be performed with priority and reliability. is there. Another object of the present invention is to provide a power supply for a self-propelled vehicle in which power supply to electric devices in various parts can be performed reliably and preferentially, and further, the priority can be determined according to the characteristics of the vehicle. A system and a power management method thereof are provided. Still another object of the present invention is to ensure that power supply to electrical devices in various parts is performed with priority and furthermore, that the priority order is determined according to the characteristics of the vehicle, It is an object of the present invention to provide a power supply system for a self-propelled vehicle and a power management method for the same, in which a space for disposing various devices is efficiently used. Still another object of the present invention is to ensure that power supply to electric devices in various parts is performed with priority and further,
It is an object of the present invention to provide a power supply system for a self-propelled vehicle and a power management method for the power supply battery, which can normally control appropriate charging of a power supply battery.

[0008]

Means for solving the problem are described as follows. The technical items appearing in the expression are appended with numbers, symbols, and the like in parentheses (). The numbers, symbols, and the like are technical items that constitute at least one embodiment or a plurality of the embodiments of the present invention, in particular, the embodiments or the examples. Corresponds to the reference numerals, reference symbols, and the like assigned to the technical matters expressed in the drawings corresponding to the above. Such reference numbers and reference symbols clarify the correspondence and bridging between the technical matters described in the claims and the technical matters of the embodiments or examples. Such correspondence / bridge does not mean that the technical matters described in the claims are interpreted as being limited to the technical matters of the embodiments or the examples.

A power supply system for a self-propelled vehicle according to the present invention includes a power supply (2), a power supply controller (5), a power supply bus (15), and a plurality of load devices (32) receiving power from the power supply bus (15). ) And communicates a state value of each of the plurality of load devices (32) to the power supply controller (5) and communicates a load amount control signal for controlling a load amount of each of the plurality of load devices based on the state value. Communication line (17)
And The timing of power replenishment or charging is optimized, and the input energy is minimized. The plurality of load devices (32) are connected in parallel to the power supply bus (15) in a non-tree structure, and the tree structure partially includes the non-tree structure.

Preferably, the power supply includes a dynamo (1) and a battery (2) connected to the dynamo (1), and the driving force of the dynamo (1) is preferably controlled based on a state value. Minimization of energy input to the dynamo (1) is realized. In this case, the energy input to the dynamo (1) is chemical energy. If the power supply bus (15) is also used as the bidirectional communication line (17), the number of wires is minimized.

A plurality of power supply devices (23) connected in parallel to the power supply bus (15) and interposed between the plurality of load devices (32) and the power supply bus (15) are included. The power supply device (23) supplies power to each of the plurality of load devices (32), and the state value and the load amount control signal are bidirectionally transmitted between the power supply controller (5) and the power supply device (23). Communicated. The parallelization makes it possible to effectively utilize the gaps vacant in a narrow space because the arrangement of the power supply devices (23) is dispersed.

The power supply bus is a plurality of wires (15, 16),
The bidirectional communication line is a plurality of lines (17, 18), and the plurality of lines (15, 16) or (17, 18) are switched and used by the power supply controller (5). It is possible to deal with breakage and damage of some devices instantly. The state values of the plurality of loads are detected by the power supply device, and the switching of the plurality of lines is performed when all or some of the plurality of load state values are zero. Whether all of the loads are zero is appropriate as a switching criterion.

Further, a plurality of repeaters (41) provided on the plurality of power supply buses are included, and the plurality of power supply devices are connected to the plurality of power supply buses (15, 16) via the plurality of repeaters (41). )
And the repeater (41) is cut off by an overcurrent passing therethrough. The repeater is a fuse or a breaker. Power can be continuously supplied while ensuring the safety of the equipment.

The power supply controller has a program, and the load amount and the power value of the power supply are controlled by the program based on the state value. The operator can be freed from complicated judgments and can concentrate on the work. All or a part of the program is provided to the power supply controller from outside by wireless or wire. In an emergency or the like, the operation of the operator is more efficiently performed. The program manages function groups based on the instantaneous value and integrated value of power consumption for each function group,
The power generation is controlled in accordance with the integration of the power consumption of all functional elements.

A power management method for a self-propelled vehicle according to the present invention comprises:
Monitoring the power storage state of the battery, monitoring the respective load states of the plurality of loads, extracting a plurality of load state patterns, controlling the power supplied from the dynamo to the battery based on the patterns. And Further, it is more preferable to control the load state based on the pattern. It is further preferable to use one of the plurality of power supply lines connecting the battery and the load based on the load state.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Corresponding to the drawings, an embodiment of a power supply system for a self-propelled vehicle according to the present invention has a battery mounted on a vehicle 10 together with a dynamo. The dynamo 1 is connected to a battery 2 as shown in FIG. The power output from the dynamo 1 is input to the battery 2 and the battery 2 is charged. The APU controller 3 connected to the dynamo 1
The power generation command signal 4 is transmitted. The power supply controller 5 is connected to the APU controller 3.

The battery 2 is connected to a power supply controller 5 via a control switchboard 6 for performing on / off control of power supply. The power supply controller 5 includes a plurality of protection breakers 7 and a power relay 8. Power supply controller 5
Are connected to each breaker 7 via a power relay 8. The control switchboard 6 receives the power supply command signal 9 from the power supply controller 5 and outputs the power of the battery 2 via the power relay 8 and each breaker 7. Control switchboard 6
Can also be operated by an operator's manual operation instead of the power supply command signal 9.

The power supply controller 5 further transmits a power generation amount adjustment command signal 11 to the APU controller 3. The power supply controller 5 operates a computer provided with a program recording medium 12 in which a first program required to generate the power supply command signal 9 and a second program required to generate the power generation amount adjustment command signal 11 are described. Built-in.

The power supply controller 5 is formed as a partial controller of the power pack controller 13. The power pack controller 13 further includes a power control controller 14. The power pack controller 13 is connected to a plurality of power buses and a plurality of communication buses. The plurality of main power buses are formed from a 1ST power supply line 15 and a 2ND power supply line 16.

Such lines can be further increased.
The battery 2 is connected in parallel to a 1ST power line 15 and a 2ND power line 16 via a power relay 8 and each breaker 7. The plurality of trunk buses for communication are formed of a 1ST communication line 17 and a 2ND communication line 18. Such lines can be further increased.

Either the 1ST power supply line 15 or the 2ND power supply line 16 is used as a backup line. One of the 1ST communication line 17 and the 2ND communication line 18 is used as a backup line. The 1ST communication line 17 and the 2ND communication line 18, which are bus lines, are not specially provided. Instead, the 1ST power supply line 15 and the 2ND power supply line 16 can be used as bus lines.

The power control controller 14 has an ENG
(Example: main engine for self-propelled) A controller 19 and an HMT (example: transmission) controller 21 are provided.
Each of the ENG controller 19 and the HMT controller 21 includes a CPU / communication device 22, a power supply module 23, and a dedicated I / F 24. The power supply module 23
Communication / control power is individually distributed and supplied to the components of the NG controller 19 and the HMT controller 21.

The ENG controller 19 and the HMT controller 21
It is connected to an intelligence ENG drive driver 25 and an intelligence HMT drive driver 26 respectively placed under these control. Intelligence EN
The G driving driver 25 and the intelligence HMT driving driver 26 are supplied with driving power from both the 1ST power supply line 15 and the 2ND power supply line 16.

Intelligence ENG drive driver 25
The intelligent HMT driver 26 includes a power supply module 27 and a communication / IO recording medium 28. Each power supply module 27 distributes and supplies driving power to respective power components of the intelligence ENG driving driver 25 and the intelligence HMT driving driver 26. The components include a driver.

The ENG controller 19 has the intelligence E
The control signal 29 and the operating state signal 31 after control are exchanged by bidirectional communication with the NG drive driver 25. The operation state signal 31 is transmitted to the power supply controller 5 via the 1ST communication line 17 or the 2ND communication line 18. The intelligence ENG drive driver 25 and the intelligence HMT drive driver 26
Each is connected to a plurality of loads 32. Examples of the load include a rotation sensor, a pressure switch, a shift solenoid, a servo valve, and a fuel pump.

The 1ST power supply line 15 and the 2ND power supply line 16 are connected to a plurality of other controllers 33, 34,... In addition to the ENG controller 19 and the HMT controller 21.
Another controller 33 is connected to the 1ST communication line 17 and the 2ND communication line 18. A plurality of other controllers 33,
Reference numeral 34 includes all or a part of another CPU / communication device 22, another power supply module 23, a memory / communication device 35, and a communication / IO recording medium 28. Other controllers 33 are:
It is connected to the intelligence accessory drive driver 36.

Another controller 34 is connected to the front panel 37. Intelligence Auxiliary Equipment Driver 36
And the front panel 37 are connected to the 1ST power line 15 and the 2ND power line 16, respectively. The intelligence auxiliary device driving driver 36 includes another power supply module 27, another communication / IO recording medium 28, and another driver main body 40.

The front panel 37 includes a display 3
8, display program medium 39, power supply module 27,
A communication / IO recording medium 28 and an operation unit are provided. Intelligence Auxiliary Equipment Driver 36 and Front Panel 3
7 are respectively connected to other plural loads 32.

Intelligence ENG drive driver 25
And the other controller 33, the other controller 34, the intelligence auxiliary device driving driver 36, and the front panel 37 are connected to the 1ST power line 15 and the 2ND power line 16 via the repeater 41, respectively. . Multiple repeaters 4
1 corresponds to one breaker each, as shown in FIG.

As shown in FIG. 2, the power supply modules 23 and 27 connected to the 1ST power supply line 15 and the 2ND power supply line 16 via these breakers are provided with DC power controlled by a current / voltage control recording medium 42. A DC / DC converter 44 that outputs the signal 43 to a plurality of constituent device elements is provided for each. The repeater 41 is a 1st power line 1
It is preferably provided as an outlet that can be freely plugged into the 5 and 2ND power supply lines 16 at the same time.

The repeaters are inserted into respective portions of the 1ST power supply line 15 and the 2ND power supply line 16 which are closest to the respective drivers 25, 36, controllers 33, 34, front panel and the like in one vehicle. A plurality of drivers are thus distributed and not concentrated in the breaker box, but can be accommodated in each of them using a narrow space where they are arranged.

According to such an arrangement of the driver and the controller having no tree structure, the total wiring length of the 1ST power supply line 15 and the 2ND power supply line 16 can be reduced. One vehicle in the plurality of vehicle groups may have a control program autonomously, or may have a control program individually and differently transmitted from a base station that controls the plurality of vehicle groups. The power supply controller 5 has such a program.

FIG. 3 shows a current state grasping method for grasping the state values of a plurality of in-vehicle devices as a pattern. The number of independent multiple devices is represented by N. Here, the plurality of devices are devices corresponding to the drivers and controllers described above and a plurality of loads belonging to these drivers and controllers. Such a plurality of devices are bidirectionally connected to the power supply controller 5 of the power pack controller 13 through either the 1ST communication line 17 or the 2ND communication line 18.

The recording medium in which the above-described first program and second program are described is inserted into the power supply controller 5 (step S1). Such a program can be incorporated into the power supply controller 5 from the beginning, and can be individually incorporated into the vehicle by wireless communication and taken in.

The power supply controller 5 normally transmits an operation confirmation signal to all devices via the 1ST communication line 17,
A response signal is received from all devices when they are operating normally. In step S2, the power supply controller 5 determines whether there is a response from each device S (S is a serial number of the device). A non-response display is performed for a device having no response signal (step S3). For a device having a response, integration (integration with respect to time) of the instantaneous power consumption Ws of the responding device is executed (step S4), and the integrated value W of the instantaneous power consumption Ws and the instantaneous power consumption Ws is obtained.
(= W + Ws) and the response are displayed.

For each of the devices 1 to N, a binary sequence of no response and response is recorded. The pattern of the binary sequence is classified. The pattern is the power supply module 2 of the other controller 33.
The fact that there is no response for all of the three components corresponds to the disconnection of the 1ST power supply line 15. In this case, the power supply controller 5
The power supply bus to be used is switched from the 1ST power supply line 15 to the 2ND power supply line 16 on the assumption that the power supply bus is damaged.

The switching is performed by the repeater 41 or the power supply modules 23 and 27 according to an instruction from the power supply controller 5. The power consumption is routinely monitored substantially in real time by repeating the execution of the process including steps S5, S6, S7, and S2 or the process including steps S5, S6, and S2.

FIG. 4 shows a power consumption management method and a power supply restriction method. Sequences W1 to W1 indicating power consumption patterns
Ws to Wn are extracted (step S11). If the output voltage of the battery 2 (corresponding to the remaining power) is lower than the high specified value VH, the driving force of the dynamo 1 is adjusted in steps S12 and S13. The degree of the adjustment depends on the magnitude of the integrated value W. After the adjustment, if the output voltage of the battery 2 falls below the lower specified value VL (step S
14) The priority order of power consumption to the devices 1 to N is determined according to the patterns W1 to Wn (step S1).
5).

The priority takes into account the relationship with the work purpose of the vehicle. In response to the situation in which the purpose of the work is to save lives by lifting rubble and the vehicle has arrived at the site, the program places priority on full power consumption of the power control controller 14 by the program, and its priority command is 1ST communication line 17 or 2ND from controller 5
The power is transmitted to the power supply module 23 of the ENG controller 19 and the power supply module 23 of the HMT controller 21 via the communication line 18.

As a device having a high priority, a light emitting device is exemplified. The lowest priority devices include air conditioning,
A headlight is exemplified. The non-priority property is exemplified by restriction on reduction of power consumption (step S16) or interruption of supply. Such a reduction in power consumption prevents the voltage of the battery 2 from dropping, and normally maintains good charging characteristics. The power consumption control of each device and the transmission of the state value of each device (instantaneous power consumption, active / inactive binary state value) to the power supply controller 5 are performed by each power supply module. The priority order is selected between manual priority (steps S17 and S18) and automatic control priority (step S17).
19) is selectively executed.

In accordance with the status report from each power supply module, the power supply controller 5 instructs each power supply module to change the state value of each device based on a program, and in conjunction with such an instruction, the driving force of the dynamo 1 Is transmitted to the dynamo 1. In addition to such control, the power supply controller 5 switches between the 1ST power supply line 15 and the 2ND power supply line 16, and
The switching between the 1ST communication line 17 and the 2ND communication line 18 is executed. Further, the power supply controller 5 can receive a command to move to another place and a change in the program from the rescue task headquarters.

Such automatic execution of the priority / non-priority control of the power consumption by the program allows the vehicle operator to concentrate on the rescue operation. In step S17, the operator who determines that the operator needs to perform autonomous judgment based on the situation is arbitrarily shifted from automatic operation to manual operation (step S18). If there is no input for manual operation, automatic operation is automatically performed. With a limited number of rescue vehicles, rescue operations can be performed with maximum efficiency.

FIG. 5 shows a quantitative system control of the power management method for a self-propelled vehicle according to the present invention. The operation mode of the vehicle and the vehicle status information are obtained by the site status or the central command (step S21). With this acquisition, a function group 1 including a plurality of functional elements that operate with the highest priority is determined. For example, a plurality of functions that are appropriate for the contents of rescue in the event of a disaster are determined. Next, the current state of the power supply module is grasped (step S22), and the current state of all function groups is grasped.

By the situation determination based on the determination and the grasp, the function group with the highest priority is specified, the amount of power supply for effectively operating the function group is quantitatively calculated and distributed, and the determined amount is determined by the display device. (Step S2
3). If power cannot be supplied by the calculation, the process returns to step S21, and steps S22 and S23 are executed more realistically. If power can be supplied by the calculation, power is supplied to the power supply module corresponding to each element function of the function group, and they are operated so that the functions of the function group are not damaged (step S25). .

Such a system control is not limited to rescue operations in the event of an earthquake or river flooding, and is required to transport a large mass object (eg, a steel strip coil) incorporated as a part of an assembly line. Can be effectively used for production activities in Japan and real-time crisis management.

[0046]

According to the power supply system for a self-propelled vehicle and the power management method for the same according to the present invention, power supply to electric devices in various parts is executed with priority and reliability. Further, the determination of the priority may be performed according to the characteristics of the vehicle. The priority order is determined according to the characteristics of the vehicle, and in particular, the use efficiency of the space where various devices are arranged in a narrow space is improved. It is also possible to control the proper charging of the power supply battery on a regular basis.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an embodiment of a power supply system for a self-propelled vehicle according to the present invention.

FIG. 2 is a wiring diagram showing wiring of a repeater.

FIG. 3 is a flowchart showing an embodiment of a power management method for a self-propelled vehicle according to the present invention.

FIG. 4 is a flowchart showing another embodiment of the power management method for a self-propelled vehicle according to the present invention.

FIG. 5 is a flowchart showing still another embodiment of the power management method for a self-propelled vehicle according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Dynamo 2 ... Power supply (battery) 5 ... Power supply controller 15, 16 ... Power supply bus 17, 18 ... Bidirectional communication line 23 ... Power supply equipment 32 ... Load equipment 41 ... Repeater

Claims (15)

[Claims] A power supply, a power supply controller, a power supply bus, a plurality of load devices receiving power from the power supply bus, and a state value of each of the plurality of load devices is communicated to the power supply controller to be converted to the state value. And a bidirectional communication line for communicating a load amount control signal for controlling the load amount of each of the plurality of load devices based on the power supply system. 2. The power supply system for a self-propelled vehicle according to claim 1, wherein the power supply includes a dynamo, and a battery connected to the dynamo, and a driving force of the dynamo is controlled based on the state value. . 3. The power supply system for a self-propelled vehicle according to claim 1, wherein the power supply bus is also used as the bidirectional communication line. 4. The power supply device according to claim 1, further comprising: a plurality of power supply devices connected in parallel to the power supply bus and interposed between the plurality of load devices and the power supply bus, respectively. A self-propelled vehicle comprising: a device for supplying power to each of the plurality of load devices; and the state value and the load amount control signal being bidirectionally communicated between the power supply controller and the power supply device. Power supply system. 5. The electric power source of a self-propelled vehicle according to claim 1, wherein the power supply bus is a plurality of lines, the bidirectional communication line is a plurality of lines, and both of the plurality of lines are used by being switched by the power supply controller. Feeding system. 6. The power supply device according to claim 1, further comprising a plurality of power supply devices connected in parallel to the power supply bus and interposed between the plurality of load devices and the power supply bus. The device supplies power to each of the plurality of load devices, the state value and the load amount control signal are bidirectionally communicated between the power supply controller and the power supply device, and the power supply bus is a plurality of wires. The bidirectional communication line is a plurality of lines, and both of the plurality of lines are switched and used by the power supply controller. 7. The power supply system for a self-propelled vehicle according to claim 6, wherein the plurality of power supply buses are also used as the plurality of bidirectional communication lines. 8. The power supply device according to claim 6, wherein the state values of the plurality of loads are detected by the power supply device, and all or some of the plurality of loads are zero as the state values of the plurality of loads. A power supply system for a self-propelled vehicle in which the plurality of lines are switched. 9. The power supply device according to claim 8, further comprising a plurality of repeaters interposed on the plurality of power supply buses, wherein the plurality of power supply devices are connected to the plurality of power supply buses via the plurality of repeaters. A power supply system for a self-propelled vehicle connected to each of the buses, wherein the repeater is interrupted by an overcurrent passing therethrough. 10. The power supply system for a self-propelled vehicle according to claim 1, wherein the power supply controller includes a program, and the load amount and the power value of the power supply are controlled by the program based on the state value. 11. The power supply system for a self-propelled vehicle according to claim 10, wherein all or a part of the program is provided to the power supply controller from the outside by wireless or wire. 12. Monitoring a power storage state of a battery, monitoring a load state of each of a plurality of loads, extracting a plurality of patterns of the load states, and from a dynamo to the battery based on the patterns. Controlling power to be supplied, the power management method for a self-propelled vehicle. 13. The power management method for a self-propelled vehicle according to claim 12, further comprising controlling the load state based on the pattern. 14. The power management method for a self-propelled vehicle according to claim 13, further comprising using any one of a plurality of power supply lines connecting the battery and the load based on the load state. 15. The power management method for a self-propelled vehicle according to claim 13, further comprising using one of a plurality of power supply lines connecting the battery and the load based on the load state.