JPH04128004U - Vehicle braking and auxiliary drives - Google Patents

Abstract

(57) [Summary] [Purpose] To drive the induction motor (starter motor) of the brake and auxiliary drive device to enable starting of the engine even when the battery of the brake and auxiliary drive device is exhausted. [Structure] The braking and auxiliary drive device is equipped with a switching means for switching the source of electrical energy to the induction machine of the brake and auxiliary drive device to either the battery or the standby power source based on a user's operation, thereby controlling the braking and auxiliary drive device. When the battery runs out, the source of power to the induction machine is switched from the battery to a standby power source based on a user's operation, and the induction machine is driven.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to braking and auxiliary drive devices for vehicles, and in particular to braking and auxiliary drive devices for vehicles. Even when the drive unit battery is dead, the backup power source can be used by user operation. Vehicle braking and braking that can enable engine starting etc. It relates to an auxiliary drive device.

0002

[Conventional technology]

Conventionally, an induction machine is attached to the power line, and this induction machine is used when braking the vehicle. The generated AC power is converted to DC power and supplied to the battery, and also used to generate electricity for the vehicle. When driving or accelerating, the electrical energy stored in this battery is extracted and converted into alternating current. The electric power of the vehicle is configured to be supplied to the above-mentioned induction machine to assist in driving the vehicle. Pneumatic braking and auxiliary drive devices have been proposed by the applicant (for example, in Japanese Patent Application Laid-Open No. 1983-1999). (See Publication No. 206101).

0003 FIG. 2 shows a braking and auxiliary drive system for such a vehicle.

0004 In FIG. 2, a large diesel engine 1 is located inside a flywheel housing 2. A thin three-phase AC rotary machine 3 is built in. This flywheel housing 2 A transmission 4 is usually provided at the rear stage. diesel engine A rotation sensor 5 is provided on the rotation axis of the engine 1. AC end of the three-phase AC rotating machine 3 The child is connected to the AC terminal of the inverter device 6. Inverter device 6 is redundant When a large amount of power is generated, the resistor 7 is configured to consume that power. Ma In addition, a battery 8 and a DC-DC converter 9 are connected to the DC terminal of the inverter device 6. is connected. The inverter device 6 also includes a rotation detection signal from a rotation sensor 5. signal, signal from starter switch 10, retarder adjustment lever 11 (operator (operated) and the accelerator opening signal from the accelerator sensor 12. Each is set to be input. In addition, the accelerator opening degree of the accelerator sensor 12 The signal is input to the electronic governor computer 13, which controls the fuel injection. The drive of the pump 14 is controlled.

[0005] When such a system is applied to a vehicle, the induction machine 3 is started by the inverter device 6 which receives the signal from the starter switch 10. It operates as a motor, and when the vehicle accelerates, it receives a signal from the accelerator sensor 12. The received inverter device 6 operates as a torque assist motor. Furthermore, when braking the vehicle, the induction machine 3 receives a signal from the retarder adjustment lever 11. The received inverter device 6 operates as a retarder (electric brake), Furthermore, the inverter device 6 exchanges the AC power generated at this time into DC power and backs up the battery. Brake energy is regenerated by supplying it to the battery 8. In addition, the above Induction machine 3 uses an alternator when there is insufficient electricity just to regenerate brake energy. It can also operate as a battery and charge the battery (this is why current starters (no need for alternator or alternator). Further, the voltage of the battery 8 is 96V. Therefore, the power supply to in-vehicle equipment that operates with a voltage of 24V (in the case of trucks) is This is done via a DC-DC converter 9 for converting 96V to 24V.

[0006]

[Problem that the idea aims to solve]

However, in such conventional vehicle braking and auxiliary drive systems, As mentioned above, since the induction machine 3 is used as a starter motor, the battery 8 rises, it is not possible to apply a rotating magnetic field to the induction machine 3, and the engine 1 cannot be started. Furthermore, the braking and auxiliary drive system of the vehicle mentioned above Since the voltage of the battery 8 used in the Booster from the battery of heavy vehicles (not equipped with braking and auxiliary drive systems) - supplying power to the battery 8 of said braking and auxiliary drive device via a cable; Engine 1 cannot be started either. Also equipped with this braking and auxiliary drive device. Vehicles that move are relatively large vehicles, so they cannot be pushed or driven like small vehicles. Starting Jin 1 is also extremely difficult. In particular, said braking and auxiliary drives In refrigerated vehicles that use the device as a drive unit for the refrigerating machine, the battery may run out. If the engine cannot start, the frozen food will thaw, lose its freshness, and become spoiled. There is a risk. Therefore, vehicles equipped with such braking and auxiliary drive devices A battery that allows you to start the engine even if the battery dies There was a strong need for countermeasures to be taken in case of rising tides.

[0007] The present invention was developed by focusing on the problems of the conventional technology, and it Even if the auxiliary drive battery goes dead, this braking and auxiliary drive It is possible to start the engine by using an induction motor at the same time as a starter motor. The purpose of the present invention is to provide a braking and auxiliary drive system for vehicles that can be used.

[0008]

[Means to solve the problem]

To achieve the above purpose, the vehicle braking and auxiliary drive system of the present invention is The induction machine installed in the inlet and the electric energy regenerated by this induction machine are A storage battery and backup power source, and a storage battery or backup power source, and converts the air energy into alternating current to apply a rotating magnetic field to the induction machine and The AC power generated by the machine is converted into DC power to connect the battery and the backup power source. the inverter circuit that supplies the inverter circuit and the source of electrical energy to the induction machine switching means for switching to either the battery or the standby power source based on the operation of the It is characterized by having the following.

[0009]

[Effect]

In this invention, if the brake and auxiliary drive battery is dead, the user The switching means switches the source of electrical energy to the induction machine based on a command from the induction machine. Switching from the battery to a backup power source. Therefore this battery died Even if the induction machine is driven by this backup power source as a starter motor, the engine Start the gin.

0010

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings.

[0011] FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention. In addition, Figure 2 in Figure 1 The same parts as in FIG. 2 are given the same reference numerals as in FIG.

0012 In Figure 1, a three-phase squirrel cage polyphase built in the flywheel 2 of the engine 1 The induction machine 3 is connected to an inverter circuit 6. This inverter circuit 6 has a switch The battery 8 (96V) and the backup power supply 22 are connected via the switching circuit 21. The AC power generated by the induction machine 3 is directly transmitted by the inverter circuit 6. It is converted into current power and sent to the battery 8 and the backup power source 22. Also the above place The DC power from the power source 8 or the standby power source 22 is controlled by the inverter circuit 6 at a desired frequency. It is converted into AC power of the wave number and sent to the induction machine 3. Inverter speed in this case The frequency of the AC power converted by the line 6 is controlled by the inverter control circuit 20. Controlled by a signal. That is, the inverter control circuit 20 is not provided in the driver's seat. a retarder adjustment lever (not shown) and a circuit for detecting the rotational speed of engine 1. While the vehicle is running, the induction motor 3 is activated based on signals from a transfer sensor (not shown), etc. The inverter circuit is configured to provide a rotating magnetic field with a rotation speed smaller than the rotation speed of the inverter 1. 6, and when the vehicle starts and accelerates, the induction machine 3 is given a rotational speed higher than that of the engine 1. The inverter circuit 6 is controlled to provide a rotating magnetic field with a high rotational speed.

[0013] Further, the switching circuit 21 is configured to connect, for example, the inverter circuit 6 and the battery 8. two thyristors (or power transistors) connected in antiparallel between and Two thyristors (or power transistor). And this switching circuit 21 is controlled by a switch control circuit 23 composed of a microcomputer, for example. be controlled. Further, this switch control circuit 23 is a changeover switch provided in the driver's cab. The switch control circuit 23 is controlled by receiving a signal from the switch 24. In addition, the above A DC-DC converter 9 is connected to the inverter circuit 6, and the inverter circuit The DC power (96V) from 6 is stepped down to 24V by this DC-DC converter 9. and supplied to vehicle electrical components such as the fan controller 25.

[0014] Next, the operation of this embodiment will be explained.

[0015] When the vehicle is running, the switching circuit 21 is connected to the switch control circuit 23. Therefore, the power supply from the inverter circuit 6 to the battery 8 and the inverter circuit 6 It operates so as to turn on both the power supply to the backup power source 22. Therefore, the temptation The AC power generated by the conductor 3 is converted to DC power by the inverter circuit 6. The power is then supplied to the battery 8 and the backup power source 22, where it is stored. Also, the above-mentioned The voltage (300V) of the power from the inverter circuit 6 is converted to 2 by the DC-DC converter 9. The voltage is stepped down to 4V and supplied to vehicle electrical components such as the fan controller 25.

[0016] Further, during normal start-up and acceleration of the vehicle, the switching circuit 21 operates as a switch control. The control circuit 23 turns on only the power supply from the battery 8 to the inverter circuit 6. It operates like this. As a result, the induction machine 3 is powered by the power from the battery 8. , operates as a starter motor when the vehicle starts, and provides torque when the vehicle accelerates. Operates as an assist motor.

[0017] Furthermore, when the vehicle is started, the battery 8 is discharged and this battery 8 If engine 1 cannot be started depending on the situation, the user (driver) must first start the engine. Operate the changeover switch 24 in the room to connect the switch control circuit 23 to the backup power supply. Enter a command to use source 22. Upon receiving this command, the switch control circuit 23 The switching circuit 21 is supplied with power from the backup power supply 22 to the inverter circuit 6. control to turn on. Therefore, in this case, the vehicle is running as described above. The induction machine 3 is activated by the starter motor using electric power from the backup power source 22 that has been charged inside. The engine 1 is started by operating the engine as a controller.

[0018] As described above, according to this embodiment, the battery 8 is discharged when the vehicle is started. Even if the vehicle is closed, the user (driver) can use the changeover switch 24 in the driver's cab. By simply operating the switch control circuit 23, the inverter is This is because the switching circuit 21 is controlled to turn on the power supply to the circuit 6. The induction machine 3 is operated as a starter motor by electric power from the standby power source 22. , the engine 1 can be started.

[0019]

[Effect of the idea]

As explained above, according to the vehicle braking and auxiliary drive device of the present invention, the braking and and auxiliary drive batteries are discharged, based on commands from the user. and the switching means switches the supply source of electrical energy to the induction machine from the battery as a backup source. Since the induction machine is switched to the power supply, even in this case, the induction machine is switched to the backup power supply. is driven as a starter motor, making it possible to start the engine. .

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a diagram illustrating a conventional vehicle electric braking and auxiliary acceleration device.

[Explanation of symbols]

1 engine 3 Induction machine 6 Inverter circuit 8 Battery 20 Inverter control circuit 21 Switching circuit 22 Backup power supply 23 Switch control circuit 24 Changeover switch

──────────────────────────────────────────────── ─── Continued from front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location H02J 7/00 P 9060-5G

Claims (1)

[Scope of utility model registration request] 1. An induction machine attached to a power line; a battery and a backup power source for storing electrical energy regenerated by the induction machine; an inverter circuit that applies a rotating magnetic field to the machine, converts AC power generated by the induction machine into DC power, and supplies the DC power to the battery and a backup power source; and a source of electrical energy to the induction machine that can be operated by a user. A braking and auxiliary drive device for a vehicle, characterized in that the braking and auxiliary drive device for a vehicle is equipped with a switching means for switching to either the battery or the backup power source based on the power source.