JP2001211510A - Control apparatus of electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To offer a control apparatus for an electric vehicle, promptly supporting a plurality of models without a need of a special apparatus or complicated procedures. SOLUTION: The control apparatus 2 comprises a computing means 3, a non-volatile memory(NVM) 5, and a switching means 6. Based on a switching signal 7 from the switching means 6, data of a set model is selected among a memorized control data 15 which is in a data memory area 4 in the computing means 3. The data is memorized as a control data 16 so that a control computation means 14 may make control computation of it. The memorized control data 16 and the switching signal 7 are stored in the NVM 5 so that when the switching means 6 changes data, the control data 16 is promptly changed to support change of model.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an electric vehicle, and more particularly, to a control device for an electric vehicle having a function of selectively switching control setting values and controlling and storing data in control of the electric vehicle.

[0002]

2. Description of the Related Art The prior art is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-314.
In Japanese Patent Publication No. 276, a failure history, which is internal storage data of an electric vehicle control device, and control information data stored and set are read out using a service support device such as a portable personal computer or the like, or are different for each model. A technique is disclosed in which a control board can be shared between different models by changing and setting control information data using a similar service support device.

[0003]

In the above prior art, an electric car is controlled based on data set in a storage means in a control device. The control board is shared, and control data of different models is controlled. This is a method of overcoming the change by using a service support device. However, in the above-described conventional technology, each time the service support device attempts to convert the control board to another model, the control data for each model is regenerated by the service support device. Setting was necessary, and there was an inconvenience in the actual service correspondence scene. In addition, the resetting by the service support device has a concern that there is a setting error due to an input setting error or the like, or a setting omission of control setting data which may reach several tens of items, and this point has not been considered. . In addition, in the case of changing and setting many pieces of setting data one by one with a service support device or the like and sharing a board, it is expected that the time and man-hours for changing the setting data with the service support device or the like will be considerable. It is considered to be unfavorable for responsiveness at the service site.

SUMMARY OF THE INVENTION An object of the present invention is to provide a control device of an electric vehicle control device corresponding to a plurality of models without consuming complicated man-hours and responsively without using a special external device such as a service support device. An object of the present invention is to provide a control device for an electric vehicle that can respond to a change in model switching and a common use of a control board with high reliability.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric motor for driving a vehicle forward and backward by switching a rotation direction, a power supply for supplying electric power to the electric motor, and supplying electric power of the power supply to the electric motor. For controlling an electric vehicle, comprising: a power conversion means for performing a conversion for controlling the power conversion means; and a control means including a calculation means for performing a control calculation for controlling the power conversion means, wherein the control means includes a switching means. A switching signal from the switching means is input to the calculating means, and a control set value for performing a control calculation in the calculating means based on the switching signal from the switching means is stored in the calculating means. This is achieved by switching the selection from the set value stored and held in the area and performing the control calculation.

The object of the present invention is to store the control set value selected by a signal from the switching means and the state of the switching signal set by the selection means in a storage area inside the arithmetic means inside the control means. Is achieved by storing and holding in a separate non-volatile memory.

The object of the present invention is to provide a method for controlling the control setting value based on a signal of the switching means when a switching signal set by the switching means is different from a state of the switching signal stored in the nonvolatile memory. Is reset, and the control set value stored in the nonvolatile memory and the state of the newly set switching signal are stored and held again.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electric vehicle control device according to the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 shows an embodiment of a control device for an electric vehicle according to the present invention. The control device 1 includes a control unit 2 and a power conversion unit 9. The control unit 2 includes a calculation unit 3, a nonvolatile memory 5, and a switching unit 6. The control means 2 may be considered to correspond to a so-called control board in the control device 1. The power conversion means 9 is configured to convert the power from the power supply 10 into power based on the signal of the calculation means 3 and supply the power to the electric motor 11 so that the electric motor 11 generates a driving force for driving the electric vehicle. . The switching signal 7 from the switching means 6 described above is transmitted to the arithmetic means 3. The non-volatile memory 5 includes the arithmetic unit 3
It is configured to be able to read and write the contents of the non-volatile memory 5 by accessing from. Further, inside the arithmetic means 3, a data storage area 4 corresponding to a so-called microcomputer ROM is included.

With such a configuration, the arithmetic unit 3 reads the switching signal 7 of the switching unit 6, and sets the control data set value 16 for performing control arithmetic for controlling the power conversion unit 9 and the electric motor 11. Based on the switching signal 7, the control data storage value 15 corresponding to a plurality of electric vehicles stored and held in the data storage area 4 inside the calculation means 3 is selected and taken out and transmitted to the control calculation means 14 for control calculation. Since the selected 16 control data set values and the state of the switching signal 7 from the switching unit 6 can be stored and held in the nonvolatile memory 5, the control unit 2 corresponding to the control board can be used. When only the control means 2 is taken out to be used for another different model and is diverted to another control device 1, only the switching to the diverted model is performed by the switching means 6. Another power converter 9 or the motor 1
The control device of the electric vehicle can be configured to perform appropriate control calculation and operation for the electric vehicle.

Next, the configuration of the switching means 6 inside the control means 2 in the above embodiment will be described with reference to FIG.

As described above, the control means 2 includes the switching means 6, and the switching means 6 includes the switching selection means 13 inside the switching means 6 as shown in FIG. The switching signal 7 from 6 is input to the calculating means 3 and is input to the model selecting means 12 inside the calculating means 3. The configuration of the switching selecting means 13 is configured by an electric signal which can be realized by a wiring by a switch or an electric element such as a jumper resistor on a board or a connector and a connection wiring. For example, in the embodiment of FIG. ,
Only the signal S3 is connected to GND, and the others are connected to the power supply by resistors. These signals S1, S2, S3, S4 are calculated by the arithmetic means 3
, When S1 = 1, S2 =
1, S3 = 0, S4 = 1, and the logic of the switching signal 7 is "
1101 ″ can be determined by the calculation means 3. The signal logic is determined by the model selection means 12 and the control data storage values stored in the data storage area 4 of the calculation means 3 for each model are stored. It decides which of the data 15 is to be used as the control data set value 16, and based on the control data set value 16, the control calculation means 14 executes a calculation to control the power conversion means 9 and the electric motor 11.
The control data set value 16 and the signal state of the switching signal 7 are stored and held in the nonvolatile memory 5 as values.

In this manner, the switching means 6
The control data set value 16 for controlling the electric power conversion means 9 or the electric motor 11 can be switched to an appropriate value only by changing the setting of the switching selection means 13 inside the device, and it corresponds to a control board with a minimum procedure. The control means 2 can be diverted to various models, that is, the control device 1 and the electric motor 11. Further, by storing the state of the control data set value 16 and the state of the switching signal 7 in the nonvolatile memory 5,
When the model is switched by changing the setting of the switching means 6, the arithmetic means 3 stores the value of the state of the switching signal 7 stored in the nonvolatile memory 5 and the value of the switching means 6 which is actually set. By comparing the switching signals 7, it can be determined whether or not the model setting has been changed, and the switching can be promptly changed to the control data set value 16 according to the setting of the switching means 6.

Next, a description will be given, with reference to FIG. 3, of the relationship of the model switching setting by the setting of the switching means 6 in the above embodiment.

As described above, the switching signal 7 based on the signal of the switching selecting means 13 inside the switching means 6 is read as the value of a bit pattern of a so-called digital signal. The model is determined based on the value of 7, and the control data setting value 16 of the control calculation to be executed by the control calculation means 14 is switched.
In the embodiment shown in FIG. 3, for example, when the pattern of the switching signal 7 is “1000”, the selected model is the 1t system of the counter vehicle, and the control data set value 16 is the data of the group G1 and the pattern is “1”. If it is 0010 ", the selected model is the 1t system of the reach car, and the data is group G3.
Is selected, a group of control data set values 16 corresponding to the pattern of the switching signal 7 is selected, and
Control data set value 1 suitable for the selected model
At 6, the control operation means 14 operates so as to perform the control operation. The control data set value 16 of each group is generated from the control data storage value 15 stored in the data storage area 4 of the arithmetic means 3. The data selected by the switching signal 7 is the state of the switching signal 7. Together with the switching means 6 in the next operation.
When the state of the switching signal 7 according to the setting of the above and the stored value of the state of the switching signal 7 stored and held in the nonvolatile memory 5 are the same, the control data set value is set in accordance with the stored contents of the nonvolatile memory 5. 16 is set and the control calculation is executed.

Next, an example of the control data set value 16 for each model in the above embodiment will be described with reference to FIG.

As the control data set value 16, the control data set value 16 is stored in advance in the data storage area 4 inside the calculating means 3 for each group as the control data storage value 15 for each model selected by the switching signal 7. By the selection by the switching signal 7, the pattern of the switching signal 7 is "1000".
If it is, it is determined that the set model is the counter car 1t system, and the group G1 of the control data set value 16 is selected, and the calculating means 3 selects the data of this group G1,
The control data is set to the control data set value 16, the control calculation is performed by the control calculation means 14, and the data of the group G 1 is written and stored in the nonvolatile memory 5. Each group has different data d for each model
Data is prepared up to 1, d2,..., Dnn, and these contents hold different data for each model. In this way, the data between the different models is pre-
By preparing in the data storage area 4 inside the device, it is possible to quickly respond to a model change due to a change in the setting of the switching means 6.

Next, the method of the switching procedure in the above embodiment will be described with reference to the flowchart of FIG.

This process is a process for selecting a model and setting a control data set value 16 based on the state of the switching signal 7 of the switching means 6, and the like. It may be performed only once in the initialization process 3 or the like, or may be performed at any time during operation of the control device of the electric vehicle. When the control unit 2 of the electric vehicle is turned on and the control unit 2 starts operating, the calculation unit 3 first reads the state of the switching signal 7 of the switching unit 6 in the process (a). Next, in (b), the stored value of the state of the switching signal 7 stored and held in the past is read from the stored content of the nonvolatile memory 5.
In (c), it is determined whether or not the switching signal 7 read from the switching means 6 in the process (a) has a switching signal pattern (value) corresponding to a model that can be set. If no matching pattern is found in the signal pattern of the model for which the state of the switching signal 7 can be set, it is determined that the model setting by the switching means 6 is incorrect, and the control data set value 1
6 and the like proceed to (i) so as not to be changed. Process if applicable model setting is found (d)
To compare with the stored value of the switching signal 7 obtained by executing in the process (b). Here, if the values of both signals are equal, it means that the setting of the switching means 6 has not been changed before the power is turned on.
Since the change of No. 6 is unnecessary, the process proceeds to (i). If the values of both signals are different, it means that the model selected and operated in the past is different from the model to be operated in the current activation, and the process proceeds to (e). In (e), the control data set value 16 of the newly selected model is extracted from the control data storage value 15 stored in the data storage area 4 inside the arithmetic means 3.

Next, the control data set value 16 is reset so that the control data storage value 15 extracted in (f) is reflected in the actual control calculation by the control calculation means 14. In the processing (g), the data storage area 4 inside the arithmetic means 3
In order to be able to handle the control data storage value 15 extracted from the control data as standard data from the next start, a process of writing the control data set value 16 to the nonvolatile memory 5 is performed. In (h), the state of the switching signal 7 of the switching means 6 which has been read this time is also written in the nonvolatile memory 5. As described above, when the state of the signal signal 7 set by the switching means 6 in the processing (c) is not set to the target signal of the set model, or set by the switching means 6 in the processing (d). Switching signal 7
Is equal to the stored value of the state of the switching signal 7 stored in the non-volatile memory 5, the control data setting value 16 used so far is used as it is. First, in the process (i), the stored value of the state of the switching signal 7 that has been operating up to the previous time is read from the nonvolatile memory 5.

Next, in the process (j), the control data set value 16 originally stored in the nonvolatile memory 5 is read. Based on the control data set value 16 extracted in the process (k), the control operation means 14 executes a control operation. By performing such processing, based on the state of the switching signal 7 set by the switching means 6, the state of the set switching signal 7 and the state of the switching signal 7 stored in the nonvolatile memory 5 are changed. When the stored values are different, it can be determined that the setting change of the switching means 6 has been performed for the model switching, and the operation for promptly replacing and changing the data for executing the control with the data of the newly set model is realized. Also, when the nonvolatile memory 5 is brand new and nothing is written, the setting of the switching signal 6 and the nonvolatile memory 5
Do not match, the control data set value 16 is changed. When the switching signal 7 does not change from the value stored in the nonvolatile memory 5 at the time of activation, the switching signal 7 of the switching means 6 and the content of the switching signal 7 of the nonvolatile memory 6 become the same. Can be determined to be unnecessary,
The control data set value 16 operates using the control data set value 16 stored in the nonvolatile memory 5 as it is.

FIG. 6 is a block diagram showing an embodiment of a switching system using an external selection signal 18 in one embodiment of the present invention.

As described with reference to FIGS. 1 and 2, the control means 2 contains the switching means 6 and the model selection means 12, and selects a model based on these signals to set a control data set value. 16 is determined. In the embodiment shown in FIG. 6, an external signal detecting means 17 is further provided on the control means 2, and a plurality of external selection signals 18 are provided from inside the control device 1 by means such as wiring.
Is input to the external signal detecting means 17. The external selection signal 18 is provided by changing the number of signals transmitted to the external signal detection means 17 depending on the configuration of the control device 1 or the capacity of the power conversion means 9 inside the control device 1. It is configured such that it is possible to determine whether it is mounted on such a type of control device 1.

External signal detecting means 17 inside control device 1
Detects these external selection signals 18 and transmits them to the model selection means 12. The model selection means 12 detects and recognizes both the signal of the switching means 6 and the external selection signal 18,
It is checked whether the control means 2 which is a so-called control board and the control device 1 equipped with the same match, and if they match, the model switching and selection operations as described above are performed. The control device 1 is operated. If the signal of the switching means 6 and the external selection signal 18 do not match, for example, even though the control device 1 is a device for small to medium-sized vehicles, the model selection by the switching means 6 is a setting for a large vehicle. In such a case, if the operation is performed with the setting of the control data set value 16 for a large vehicle, a problem such as the capacity of the power conversion means 9 of the control device 1 occurs or the power conversion means 9 becomes abnormal. Therefore, in the case where such inconsistency occurs, the model selection unit 12 sets the setting for the smallest vehicle among the stored setting values, or notifies the calculation unit 3 that there is a problem. To take action.

With such a configuration, an erroneous setting of the control means 2 with respect to the control device 1 or an erroneous mounting of the control means 2 can be prevented beforehand.

[0026]

According to the present invention, a control device for an electric vehicle which needs to be compatible with a plurality of models is provided in the control means 2 without consuming complicated man-hours and without requiring a device dedicated to services. Since the control data can be easily changed between different models simply by changing the setting of the switching means 6, the serviceability and the reliability at the time of changing the model can be improved, and the control means 2 is commonly used as a control board. There is an effect that conversion and diversion can be easily realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an electric vehicle control device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a switching unit 6 inside the control unit 2 according to an embodiment of the present invention.

FIG. 3 is a diagram showing a relationship of a model switching setting based on a setting of a switching unit 6 according to an embodiment of the present invention.

FIG. 4 is a diagram showing an example of a control data set value 16 for each model in one embodiment of the present invention.

FIG. 5 is a flowchart illustrating a switching procedure method according to an embodiment of the present invention.

FIG. 6 shows an external selection signal 1 according to an embodiment of the present invention.
8 is a block diagram showing an embodiment of a switching method using the control method 8 in combination.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Control device, 2 ... Control means, 3 ... Calculation means, 4 ... Data storage area, 5 ... Non-volatile memory, 6 ... Switching means, 7
... Switching signal, 8 ... Display / adjustment means, 9 ... Power conversion means,
10 power supply, 11 electric motor, 12 model selection means, 13
... Switch selection means, 14 control arithmetic means, 15 control data storage value, 16 control data set value, 17 external signal detection means, 18 external selection signal.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuyoshi Takahashi 2477 Takaba, Hitachinaka, Ibaraki Prefecture Inside Hitachi Car Engineering Co., Ltd. (72) Inventor Kenichi Maehara 2477 Takaba, Hitachinaka-shi, Ibaraki Hitachi Car Corporation F term in engineering (reference) 5H115 PG04 PU01 QH08 QI04 QN03

Claims (4)

[Claims] An electric motor for driving a vehicle forward and backward by switching a rotation direction, a power supply for supplying electric power to the electric motor, and a power conversion means for performing a conversion for supplying electric power of the power supply to the electric motor. And a control means including a calculation means for performing a control calculation for controlling the power conversion means, and a control device for an electric vehicle having a control device equipped with them. Control setting value for inputting a switching signal from the switching means to the selecting means and performing a control operation in the calculating means by the selecting means based on the switching signal from the switching means. Is selectively switched from a set value stored in a storage area inside the arithmetic means to perform control arithmetic. 2. The control device for an electric vehicle according to claim 1,
The control set value selected by a signal from the switching means and the state of the switching signal set by the selection means are stored in a non-volatile memory provided separately from a storage area inside the arithmetic means inside the control means. An electric vehicle control device characterized by holding. 3. The control device for an electric vehicle according to claim 2,
If the signal by the setting of the switching means is different from the state of the switching signal stored and held in the nonvolatile memory,
Resetting the control set value based on the signal of the switching means, and re-storing the control set value stored in the nonvolatile memory and the state of the newly set switching signal. An electric vehicle control device characterized by the following. 4. The control device for an electric vehicle according to claim 1,
The control means has an external signal detection means, and the control device has an external selection signal for setting and transmitting according to the capacity and type of the power conversion means included in the control device. The external selection signal is input to signal detection means, and the selection means in the control means compares a switching signal from the switching means with the external selection signal from the external signal detection means, A control device for an electric vehicle, characterized in that setting of a switching means, and detection and confirmation of a mismatch between a control device equipped with the control device and a power conversion device.