JP5645040B2 - Control device for electric vehicle - Google Patents

Description

  The present invention relates to a control device for an electric vehicle including a travel motor as a drive source, and particularly to a technique for suppressing theft of the electric vehicle.

  Conventionally, the occurrence of theft of vehicles such as automobiles has been a problem, but in recent years, the number of thefts of vehicles has increased, and effective measures are desired. As measures against theft of vehicles, for example, antitheft systems mounted on vehicles such as immobilizer systems have been developed. In the immobilizer system, when an engine is started with a key, a unique ID code of an electronic chip embedded in the key is electronically collated with an ID code stored in the vehicle-side ECU. And only when both correspond, an engine starts (refer patent document 1).

JP 2010-120421 A

  By mounting a control device including such an anti-theft system on a vehicle, the possibility of theft of the vehicle is reduced, but it is difficult to completely prevent the theft. For example, if the control device itself is replaced, the engine can be started. For example, as described in Patent Document 1, various devices for preventing theft of the vehicle by exchanging the control device itself have been proposed.

  By the way, in recent years, a large number of electric vehicles such as electric vehicles (BEV) and plug-in hybrid vehicles (PHEV) have been put into practical use. In the future, the number of these electric vehicles is expected to increase, and the theft of electric vehicles is also expected to increase accordingly. Although the anti-theft system as described above is also effective for electric vehicles, development of a system (control device) that is more effective for electric vehicles is desired.

  This invention is made | formed in view of such a situation, and it aims at providing the control apparatus of the electric vehicle which can suppress generation | occurrence | production of theft effectively.

A first aspect of the present invention for solving the above problem is a control device for an electric vehicle comprising: a battery that supplies electric power to a traveling motor; and an inverter that converts electric power supplied to the traveling motor. A plurality of control devices for controlling driving of the travel motor, the plurality of control devices including a first control device positioned at a higher level and an inverter control means positioned at a lower level of the first control device; Whether or not the first information stored in the first control device matches the second information stored in the second control device. And a permission unit that permits power supply from the battery to the traveling motor only when it is determined by the determination unit that the first information and the second information match. And sent from external communication means Further comprising a rewriting unit, the rewriting said second data on the basis of the instruction information, said rewriting means receives the instruction information transmitted from said external communication means, after waiting for a predetermined time, the external communication unit When the instruction information is received again from the above, rewriting of the second information is started.

In the present invention, when the second information is rewritten by the external communication means, a certain waiting time is provided , and the instruction information is re-received from the external communication means. For example, the first control device Even if an attempt is made to steal an electric vehicle by exchanging the information, it is necessary to rewrite the second information to start the traveling motor, which requires a considerable amount of time. Therefore, it is possible to effectively prevent the electric vehicle from being stolen.

According to a second aspect of the present invention, the rewriting unit starts rewriting the second information on the condition that communication with the external communication unit is continued during the predetermined time waiting. There exists in the control apparatus of the electric vehicle of the 1st aspect characterized.

In the second aspect, it takes more time to rewrite the second information and start the traveling motor. Therefore, the occurrence of theft of the electric vehicle can be further effectively suppressed.

According to a third aspect of the present invention, in the control of the electric vehicle according to the first or second aspect, the rewriting of the second information by the rewriting means includes initialization of the second information. In the device.

In the third aspect, considerable effort and time are required even when the second information is initialized, so that the theft of the electric vehicle can be more reliably suppressed.

According to a fourth aspect of the present invention, in the control device for an electric vehicle according to any one of the first to third aspects, the first and second information includes destination information.

In the fourth aspect, for example, even when the first control device is replaced with one obtained overseas, the second information needs to be rewritten, and the occurrence of theft of the electric vehicle can be suppressed.

  In such a control device of the present invention, it takes a considerable amount of time and time to start the traveling motor, so that the theft of the electric vehicle can be effectively suppressed.

It is a figure showing the schematic structure of the electric vehicle concerning one embodiment. It is a block diagram which shows schematic structure of the control apparatus which concerns on one Embodiment. It is a flowchart which shows the process sequence by the control apparatus which concerns on one Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a battery (secondary battery) 2 is mounted on an electric vehicle 1 that is an example of an electric vehicle. The battery 2 is electrically connected to a traveling motor 4 via an inverter 3. Has been. Although not shown, the traveling motor 4 is connected to driving wheels, and the electric vehicle 1 is driven by the driving force of the traveling motor 4.

  Further, the electric vehicle 1 is provided with a control device 10 for controlling driving of the traveling motor 4 and the like. The control device 10 is an electronic control unit (ECU) including an input device, a storage device, an arithmetic circuit, and the like. In the present embodiment, a plurality of independent first control devices 11 and second control devices 12 are provided. It consists of the control device.

  The first control device 11 includes various control means for controlling various devices (not shown) mounted on the electric vehicle 1 and performs overall control of the electric vehicle. For example, as shown in FIG. 2, the first control device 11 includes an output unit 13 that outputs various signals (for example, accelerator opening degree) necessary for controlling driving of the traveling motor 4. The first storage unit 14 is provided for storing various information. In addition, a key cylinder 15 serving as a main switch of the electric vehicle 1 is connected to the first control device 11. When the driving motor 4 is started by a key operation, the unique ID code of the electronic chip embedded in the key 16 matches the ID code stored in the first storage unit 14. Whether or not it is electronically verified. That is, it is one of the conditions for starting the traveling motor 4 that these ID codes match.

  The first control device 11 is provided with a connector 17 to which an external communication means (Multi-Use Tester, hereinafter also referred to as “MUT”) 30 is connected. Although not shown, the MUT 30 is provided with a display capable of displaying the operation contents from the MUT to the control device and the state of the control device together with input operation buttons (input keys). Can be rewritten.

The second control device 12 is provided in the casing of the inverter 3, and inverter control means 18 that controls the operation of the inverter 3 for the purpose of motor control based on output information from the output means 13 of the first control device 11. And motor control means 19 for controlling the driving of the traveling motor 4. Furthermore, the second control device 12 includes a determination unit 20, a permission unit 21, and a rewrite unit 22, and a second storage unit 23 that stores various types of information.
In this way, the control device 10 includes the first control device 11 located on the key cylinder 15 side (upper side) serving as the main switch, and the second control device 12 located lower than the first control device 11. It is composed of.

  The determination unit 20 includes first information stored in the first storage unit 14 of the first control device 11 and second information stored in the second storage unit 23 of the second control device 12. It is determined whether or not the information matches. Although the content of these 1st information and 2nd information is not specifically limited, For example, the destination information etc. which are the information of the area where the electric vehicle 1 is used are contained. Depending on the region (country) where the electric vehicle 1 is used, for example, a unique security standard is defined by laws and regulations, and the destination information varies depending on each region. For this reason, when the electric vehicle 1 is produced, predetermined information including destination information corresponding to each region is stored in the first control device 11 as the first information, and the second control device. 12 is recorded as second information.

  The permitting unit 21 permits the power supply from the battery 2 to the traveling motor 4 only when the determining unit 20 determines that the first information and the second information match. That is, in the present embodiment, as described above, the ID code unique to the key matches the ID code stored in the first storage unit 14, and the first information stored in the first storage unit 14. And the second information stored in the second storage unit 23 coincide with each other, the starting of the traveling motor 4 is permitted.

  For this reason, for example, when the first control device 11 is replaced due to a failure or the like, in order to start the traveling motor 4, it is necessary to perform a process for matching the first information with the second information. .

  The rewriting means 22 with which the 2nd control apparatus 12 is provided rewrites the 2nd information memorize | stored in the 2nd memory | storage part 23, only when predetermined conditions are satisfy | filled. In the present embodiment, when the first control device 11 is replaced, the first information and the second information are rewritten by rewriting the second information stored in the second storage unit 23 as necessary. Match information. Specifically, when instruction information is transmitted from the MUT 30 to the second control apparatus 12 via the first control apparatus 11, the second information stored in the second storage unit 23 based on the instruction information. Rewrite the information of 2. For example, in the present embodiment, when the rewriting means 22 receives instruction information for rewriting the second information from the MUT 30, the second information is reset to the initial state, or the second information is changed according to the first information. Rewrite the information.

  However, even if the rewriting means 22 receives the instruction information from the MUT 30, it does not immediately start rewriting the second information, but starts rewriting the second information after waiting for a certain time. The length of the waiting time is not particularly limited and may be set as appropriate. In the present embodiment, it is about 5 minutes. As described above, the rewriting unit 22 starts rewriting the second information after waiting for a predetermined time, so that the occurrence of theft of the electric vehicle 1 can be greatly reduced.

  Hereinafter, based on the flowchart of FIG. 3, the rewriting process of the 2nd information by the control apparatus 10 of this embodiment is demonstrated.

  For example, when the first control device 11 is replaced and the first information is default information, instruction information from the MUT 30, for example, initialization of the second information stored in the second storage unit 23 is initialized. When the instruction information to the effect is transmitted (step S1: Yes), the rewriting means 22 receives the instruction information, but does not immediately start the rewriting process of the second information in response to the instruction information, but for a certain period of time. Wait (for example, about 5 minutes) (step S2). In the present embodiment, “standby” is based on the premise that communication with the MUT 30 is continued. Therefore, once communication with the MUT 30 is disconnected, a series of processing is resumed from step S1. As described above, in this embodiment, the standby condition is that the communication with the MUT 30 is continued. Of course, the continuation of the communication with the MUT 30 may not be a standby condition.

  When the instruction information from the MUT 30 is received again after a certain waiting time has elapsed with the communication with the MUT 30 continued (step S3: Yes), the rewriting means 22 initializes the second information in step S4. The first information is matched with the second information, and the series of processes ends.

  On the other hand, when the instruction information is not transmitted from the MUT 30 in step S1 (step S1: No) and when the instruction information is not transmitted again from the MUT 30 in step S3 (step S3: No), the rewriting unit 22 A series of processing ends without rewriting the second information.

  Then, by rewriting such second information, the traveling motor 4 is started when a key operation is subsequently performed. That is, when the key operation is executed, the ID code unique to the key and the ID code stored in the first storage unit 14 match, and the determination unit 20 further determines the first information and the second information. When it is determined that the information matches, the permission means 21 permits the power supply from the battery 2 to the traveling motor 4. As a result, the traveling motor 4 is started and the electric vehicle 1 is ready to travel.

  As described above, in the control device 10 of the present invention, for example, when the first control device 11 is replaced, the first information stored in the second control device 12 is rewritten, so that the first information is rewritten. The information is matched with the second information. Thereby, generation | occurrence | production of theft of the electric vehicle 1 can be suppressed effectively.

  When the electric vehicle 1 is stolen, it is assumed that the first control device 11 that is relatively small together with the key cylinder 15 is replaced. On the other hand, since the 2nd control apparatus 12 is provided in the housing | casing of the inverter 3, in order to replace | exchange the 2nd control apparatus 12, it is necessary to remove inverter 3 itself. For example, since the inverter 3 has a weight of about a dozen kg, it is difficult to consider removing the inverter 3 itself. Therefore, in order to steal the electric vehicle 1 provided with the control device 10 of the present invention, the second information must be rewritten. That is, it is necessary to rewrite the second information stored in the second control device 12 by the MUT 30 in accordance with the first information stored in the first control device 11 that has been illegally exchanged.

  As described above, it takes time and effort to steal the electric vehicle 1 on which the control device 10 of the present invention is mounted. That is, theft can be suppressed. In the present invention, as described above, a fixed waiting time is provided when the second information is rewritten. Furthermore, in this embodiment, when the instruction information from the MUT 30 is transmitted again after waiting for a predetermined time, the rewriting unit 22 initializes the second information. For this reason, it takes a lot of time and effort to steal the electric vehicle 1 on which the control device 10 is mounted. Therefore, it is possible to more effectively suppress theft.

  In the present embodiment, destination information and the like, which are information on the area where the electric vehicle 1 is used, are stored as the first information and the second information. For this reason, for example, even when the first control device 11 is replaced with one obtained overseas, the second information must be rewritten to start the traveling motor 4. Therefore, the theft of the electric vehicle 1 can be more effectively suppressed.

  In the present embodiment, after waiting for a certain time in step S2, when the instruction information from the MUT 30 is transmitted again in step S3, the rewriting means 22 initializes the second information. May not necessarily be provided. In any case, the occurrence of theft of the electric vehicle 1 can be reliably suppressed by providing a certain waiting time.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of invention, it can change suitably.

  For example, in the above-described embodiment, the second control device includes the motor control unit that controls the traveling motor. However, the motor control unit may be included in the first control device.

  Further, for example, in the above-described embodiment, the present invention has been described using an electric vehicle including a traveling motor as an example of an electric vehicle. Etc. are also applicable.

DESCRIPTION OF SYMBOLS 1 Electric vehicle 2 Battery 3 Inverter 4 Traveling motor 10 Control apparatus 11 1st control apparatus 12 2nd control apparatus 13 Output means 14 1st memory | storage part 15 Key cylinder 16 Key 17 Connector 18 Inverter control means 19 Motor control means 20 determining means 21 permitting means 22 rewriting means 23 second storage unit 30 external communication means (MUT)

Claims (4)

A control device for an electric vehicle comprising: a battery that supplies electric power to a traveling motor; and an inverter that converts electric power supplied to the traveling motor,
A plurality of control devices for controlling the driving of the traveling motor;
The plurality of control devices include:
A first control device located at a higher level;
A second control device comprising inverter control means positioned in a lower level of the first control device;
Consisting of
Determination means for determining whether or not the first information stored in the first control device and the second information stored in the second control device match;
Permission means for permitting power supply from the battery to the traveling motor only when the determination means determines that the first information and the second information match.
Rewriting means for rewriting the second information based on the instruction information transmitted from the external communication means,
When the instruction information transmitted from the external communication means is received, the rewriting means starts rewriting the second information when the instruction information is received again from the external communication means after waiting for a predetermined time. A control apparatus for an electric vehicle characterized by the above. They said rewriting means, while waiting the predetermined time, on condition that the communication with the external communication unit has been continued, according to claim 1, characterized in that starting the rewriting of the second information Control device for electric vehicle. The electric vehicle control device according to claim 1 or 2 , wherein the rewriting of the second information by the rewriting means includes initialization of the second information. The said 1st and 2nd information contains destination information, The control apparatus of the electric vehicle as described in any one of Claims 1-3 characterized by the above-mentioned.

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