Vehicle

Abstract

A vehicle is provided. Safety of a high-voltage component such as an electric suspension device mounted on the vehicle is improved. A vehicle (1) includes an acceleration sensor (S1) that detects a collision, an electric actuator (12) disposed outside a vehicle body (BD), a battery (16) and a voltage-boosting circuit (26) that supply a high voltage (VH) to the electric actuator (12), and an electric suspension control ECU (20) that controls the voltage-boosting circuit (26) and the electric actuator (12), wherein the electric suspension control ECU (20) limits supply of the high voltage (VH) to the electric actuator (12) when the acceleration sensor (S1) detects the collision.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle. BACKGROUND

[0002] In the past, a technology related to an electric suspension device that is mounted on a vehicle and driven by a motor has been known.

[0003] For example, in the electric suspension device described in Patent Literature 1, it is necessary to increase the output voltage of a transformer such as a DC / DC converter that steps up the electric power supplied to the motor of an electric actuator, in accordance with regulations, within a range below a prescribed voltage (for example, 48 V) (the driving voltage of the motor).

[0004] Patent Literature 1: Japanese Patent Application Publication No. 2012-131395

[0005] However, in the electric suspension device described in Patent Literature 1, in the case where a three-phase alternating-current brushless motor is used, the three-phase alternating-current portion is classified as high voltage because it is 30 V or more of alternating current. Further, in order to ensure the safety of high voltage that is disposed outside the vehicle body at the time of a vehicle collision, it is necessary to ensure the safety of the alternating-current portion, but this is not described in Patent Literature 1. SUMMARY

[0006] An object of the present application is to improve the safety of a high-voltage component of an electric suspension device or the like that is mounted on a vehicle.

[0007] One embodiment of the present application is a vehicle including a collision sensor that detects a collision, a high-voltage component that is disposed outside a vehicle body, a power supply device that supplies a high voltage to the high-voltage component, and a control device that controls the power supply device and the high-voltage component, wherein the control device limits the supply of the high voltage to the high-voltage component in the case where the collision sensor detects a collision.

[0008] Another embodiment of the present application is the above-described vehicle, wherein the control device limits the voltage supplied to the high-voltage component to be below a prescribed voltage in the case where the collision sensor detects a collision.

[0009] Another embodiment of the present application is the above-described vehicle, wherein the high-voltage component includes a motor, and the control device shorts the motor in the case where the collision sensor detects a collision.

[0010] Another embodiment of the present application is the above-described vehicle, wherein the high-voltage component is an electric actuator of an electric suspension device, the collision sensor is an acceleration sensor that detects the acceleration of the electric actuator, and the control device controls the electric actuator on the basis of the detection result of the acceleration sensor.

[0011] Another aspect of the application is in the above vehicle, the control device maintains the short circuit of the motor during a period from detection of a collision by the collision sensor to a stop of the vehicle.

[0012] Effects of Invention

[0013] According to the present application, it is possible to improve the safety of high-voltage components such as an electric suspension device mounted on a vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view showing an example of the configuration of an electric suspension device.

[0015] Figure 2 is a view showing an example of the structure of an electric suspension device.

[0016] Figure 3 is a view showing an example of the structure of a short circuit.

[0017] Figure 4 is a flowchart showing an example of the processing of a control ECU.

[0018] REFERENCE NUMERALS

[0019] 1… vehicle; 10… electric suspension device; 12… electric actuator (high-voltage component); 12A… 1st electric actuator; 12B… 2nd electric actuator; 12C… 3rd electric actuator; 12D… 4th electric actuator; 13… high-voltage line; 14… signal line; 15… low-voltage line; 16… battery (part of power supply device); 20… electric suspension control ECU (control device); 21A… memory; 21B… processor; 211… collision detection section; 212… limit instruction section; 22… inverter; 24… short circuit; 26… step-up circuit (part of power supply device); 28… drive circuit; 30… link section; 32… inner tube; 34… nut; 40… outer tube; 42… screw shaft; 44… bearing; 46… motor; 50u, 50v, 50w… motor coil; 60a, 60b, 60c… switch; 64u, 64v, 64w… power line; 70… travel control ECU; BD… vehicle body; S1… acceleration sensor (collision sensor); S2… stroke sensor; S3… rotation angle sensor; S4… voltage sensor; ST… stroke; TR… wheel; VA… prescribed voltage; VC… travel speed; VH… high voltage; a… acceleration; Q… rotation angle. DETAILED DESCRIPTION

[0020] Hereinafter, an embodiment of the present application will be described with reference to the drawings.

[0021] [1. Structure of Electric Suspension Device]

[0022] Figure 1 is a perspective view showing an example of the configuration of the electric suspension device 10. Figure 2 is a diagram showing an example of the structure of the electric suspension device 10.

[0023] Referring to Figure 1 and Figure 2 The electric suspension device 10 will be described.

[0024] As shown in Figure 1 , the vehicle 1 has a vehicle body BD, four wheels TR, and the electric suspension device 10. The electric suspension device 10 has electric actuators 12 and an electric suspension control ECU 20.

[0025] The electric actuators 12 are arranged outside the vehicle body BD. Specifically, the electric actuators 12 are constituted by a first electric actuator 12A, a second electric actuator 12B, a third electric actuator 12C, and a fourth electric actuator 12D. The first electric actuator 12A is arranged between the vehicle body BD and the right front wheel. The second electric actuator 12B is arranged between the vehicle body BD and the left front wheel. The third electric actuator 12C is arranged between the vehicle body BD and the right rear wheel. The fourth electric actuator 12D is arranged between the vehicle body BD and the left rear wheel.

[0026] The electric suspension control ECU (Electronic Control Unit) 20 controls the first electric actuator 12A to the fourth electric actuator 12D, respectively. The electric suspension control ECU 20 is connected to the first electric actuator 12A to the fourth electric actuator 12D, respectively, through a high-voltage line 13, a signal line 14, and a low-voltage line 15.

[0027] The high-voltage line 13 supplies electric power of a high voltage VH from a battery 16 shown in Figure 2 to the first electric actuator 12A to the fourth electric actuator 12D, respectively. The electric power of the high voltage VH is used for driving of a motor 46 shown in Figure 2 . The high voltage VH is, for example, alternating current 33 V to 38 V.

[0028] The signal line 14 transmits detection signals of sensors S1 to S4 shown in Figure 2 to the electric suspension control ECU 20.

[0029] Referring to Figure 2 The sensors S1 to S4 will be described.

[0030] The low-voltage line 15 supplies electric power of a low voltage VL from the battery 16 shown in Figure 2 to the first electric actuator 12A to the fourth electric actuator 12D, respectively. The electric power of the low voltage VL is used, for example, for driving of a motor 46 shown in Figure 2The operation of sensors S1 to S4 is shown. The low voltage VL is, for example, DC 5V.

[0031] In the following description, for convenience, the electric suspension control ECU20 will sometimes be referred to as control ECU20.

[0032] The first electric actuator 12A to the fourth electric actuator 12D have approximately the same structure. Therefore, without distinguishing between the first electric actuator 12A to the fourth electric actuator 12D, the first electric actuator 12A to the fourth electric actuator 12D will sometimes be referred to simply as electric actuator 12.

[0033] Next, refer to Figure 2 The structure of the electric actuator 12 will be described.

[0034] like Figure 2 As shown, the electric actuator 12 has a connecting part 30, an inner tube 32, and a nut 34 as components on the wheel TR side. Furthermore, the electric actuator 12 has an outer tube 40, a lead screw shaft 42, a bearing 44, and a motor 46 as components on the vehicle body BD side. The outer tube 40, bearing 44, and motor 46 are fixed to a base frame 48 disposed at the lower part of the vehicle body BD.

[0035] Reference Figure 3 The structure of motor 46 will be described.

[0036] The electric actuator 12 corresponds to an example of a "high-voltage component".

[0037] The lead screw shaft 42 is supported by a bearing 44 and a nut 34. The inner surface of the nut 34 engages with a threaded groove formed on the outer surface of the lead screw shaft 42 via the bearing.

[0038] Motor 46 rotates lead screw 42, thereby moving nut 34 vertically. Moving nut 34 downward causes inner tube 32 to move downward. Moving nut 34 upward causes inner tube 32 to move upward.

[0039] In this way, the position of the inner tube 32 relative to the outer tube 40 in the vertical direction can be adjusted, wherein the outer tube 40 is fixed to the chassis 48 of the vehicle body BD.

[0040] The connecting part 30 is fixed to the steering knuckle (not shown) of the suspension device, thereby connecting to the wheel TR. When vibration is input to the connecting part 30 from the wheel TR side, for example, when an upward acceleration α is applied to the connecting part 30, the inner tube 32 and nut 34 rise together with the outer tube 40. In this case, the motor 46 rotates the lead screw shaft 42, causing the inner tube 32 to move upward in the direction of absorbing the upward acceleration α, thereby damping the vibration from the wheel TR to the vehicle body BD.

[0041] The electric actuator 12 is provided with an acceleration sensor S1, a stroke sensor S2, a rotation angle sensor S3, and a voltage sensor S4.

[0042] The acceleration sensor S1 is fixed, for example, to the same position as the rotation angle sensor S3 or the outer peripheral surface of the inner tube 32, and detects an acceleration a applied from the wheel TR side to the joint portion 30. The acceleration sensor S1 is inclined with respect to the vertical direction by a prescribed direction. Alternatively, the acceleration sensor S1 can be arranged in the vertical direction.

[0043] The acceleration sensor S1 is arranged, for example, so as to be inclined with respect to the vertical direction by a prescribed angle in the width direction of the vehicle body BD. In this case, a collision of the vehicle 1 can be detected on the basis of the width direction component of the acceleration a.

[0044] Further, the acceleration sensor S1 can be arranged, for example, so as to be inclined with respect to the vertical direction by a prescribed angle in the front-rear direction of the vehicle body BD. In this case, a collision of the vehicle 1 can be detected on the basis of the front-rear direction component of the acceleration a.

[0045] The acceleration sensor S1 corresponds to an example of a "collision sensor".

[0046] The stroke sensor S2 is arranged at a position of the inner tube 32 opposite the screw shaft 42, and detects a stroke ST that indicates the amount of downward movement of the nut 34. The stroke sensor S2 is constituted by a distance measuring sensor or the like.

[0047] The rotation angle sensor S3 is constituted by a so-called rotary transformer, a Hall element, or the like, and detects a rotation angle Θ of the motor 46.

[0048] The voltage sensor S4 detects a voltage V applied to the motor 46. In a state in which the motor 46 is driven by electric power from the battery 16, the voltage V indicates a high voltage VH supplied from the battery 16 via the high voltage line 13.

[0049] The acceleration a, the stroke ST, the rotation angle Θ, and the voltage V are output to the control ECU 20.

[0050] [2. Structure of the electric suspension control ECU]

[0051] The control ECU 20 controls the motor 46 via the inverter 22 on the basis of the detection results of the acceleration sensor S1, the stroke sensor S2, the rotation angle sensor S3, and the voltage sensor S4.

[0052] The control ECU 20 has a memory 21A and a processor 21B.

[0053] The memory 21A is a storage device that non-volatile stores programs and data executed by the processor 21B. The memory 21A is constituted by a magnetic storage device, a semiconductor storage element such as a flash ROM (Read Only Memory), or other kinds of non-volatile storage devices. Further, the memory 21A can also include a RAM (Random Access Memory) that constitutes a work area of the processor 21B. The memory 21A stores data processed by the control ECU 20 and a control program executed by the processor 21B.

[0054] The electric suspension control ECU 20 corresponds to an example of the "control device".

[0055] The processor 21B can be constituted by a single processor, or can be a structure in which a plurality of processors function as the processor 21B. The processor 21B executes a control program to thereby control each part of the electric suspension device 10.

[0056] The control ECU 20 has a collision detection part 211, a restriction instruction part 212. Specifically, the processor 21B of the control ECU 20 executes a control program, thereby functioning as the collision detection part 211 and the restriction instruction part 212.

[0057] Further, the control ECU 20 is communicably connected with the travel control ECU 70 via an in-vehicle network.

[0058] The travel control ECU 70 controls travel of the vehicle 1. The travel control ECU 70 outputs a travel speed VC of the vehicle 1 to the control ECU 20.

[0059] The collision detection part 211 detects a collision of the vehicle 1 based on a detection result of the acceleration sensor S1. The collision detection part 211, for example, detects a collision of the vehicle 1 based on a width direction component of the acceleration a detected by the acceleration sensor S1.

[0060] Specifically, the collision detection part 211 detects a collision of the vehicle 1 in a case where the width direction component of the acceleration a is a prescribed value or more.

[0061] The restriction instruction part 212 restricts supply of electric power of the high voltage VH to the motor 46 of each of the 1st to 4th electric actuators 12A to 12D, in accordance with a detection result of the collision detection part 211.

[0062] Specifically, in a case where the collision detection section 211 detects a collision of the vehicle 1, the restriction instruction section 212 executes the following processing. That is, the restriction instruction section 212, for example, restricts a voltage supplied to the motor 46 via the step-up circuit 26 to be equal to or lower than a prescribed voltage VA (including a case where the supply of electric power to the motor 46 is stopped). The prescribed voltage VA is, for example, 20 V to 30 V.

[0063] Referring to Figure 3 The step-up circuit 26 will be further described.

[0064] Further, the restriction instruction section 212 shorts the motors 46 of the first to fourth electric actuators 12A to 12D after restricting the supply of the high voltage VH to the motors 46.

[0065] Specifically, the restriction instruction section 212 shorts the motors 46 of the first to fourth electric actuators 12A to 12D via the short-circuiting circuit 24 described with reference to Figure 3 The short-circuiting circuit 24 described with reference to

[0066] Further, the restriction instruction section 212 maintains the shorting of the motors 46 during a period from when the collision of the vehicle 1 is detected by the collision detection section 211 until the vehicle 1 stops. The restriction instruction section 212 determines that the vehicle 1 has stopped on the basis of the travel speed VC from the travel control ECU 70. For example, in a case where the travel speed VC is equal to or lower than 5 km / h, the restriction instruction section 212 determines that the vehicle 1 has stopped.

[0067] As shown in Figure 2 and Figure 3 The step-up circuit 26 is disposed between the battery 16 and the inverter 22. The step-up circuit 26 steps up a voltage (for example, 12 V to 16 V) supplied from the battery 16 to the high voltage VH, and supplies the high voltage VH to the inverter 22.

[0068] Further, the step-up circuit 26 restricts a voltage supplied from the inverter 22 to the motor 46 to be equal to or lower than the prescribed voltage VA.

[0069] The battery 16 and the step-up circuit 26 correspond to an example of the "power supply device".

[0070] [3. Structure of short-circuiting circuit]

[0071] As shown in Figure 2 The control ECU 20 controls the inverter 22 and the short-circuiting circuit 24 via the drive circuit 28. The control ECU 20 controls the rotation direction and the rotation speed of the motor 46 via the inverter 22. Further, the control ECU 20 shorts the motor 46 via the short-circuiting circuit 24.

[0072] Figure 3is a diagram showing an example of the structure of the short circuit circuit 24.

[0073] As shown in Figure 3 , the short circuit circuit 24 has a switch 60a, a switch 60b, and a switch 60c, which are turned on and off in accordance with an instruction from the control ECU 20, a resistor 62a, a resistor 62b, and a resistor 62c.

[0074] The motor 46 is, for example, a three-phase alternating-current brushless type, as shown in Figure 3 , has three motor coils 50u, 50v, and 50w.

[0075] The motor 46 rotates the lead screw shaft 42, as shown in Figure 2 , by electric power supplied from the battery 16 via the inverter 22.

[0076] Further, the motor 46 generates regenerative electric power by an external force input to the lead screw shaft 42 from the wheel TR side, and outputs the generated electric power to the battery 16.

[0077] The switch 60a shorts the electric power lines 64u and 64v corresponding to the motor coils 50u and 50v, respectively, in accordance with an instruction from the restriction instruction section 212. In the case where the switch 60a shorts the electric power lines 64u and 64v, the resistor 62a adjusts the current flowing in the motor coils 50u and 50v.

[0078] The switch 60b shorts the electric power lines 64v and 64w corresponding to the motor coils 50v and 50w, respectively, in accordance with an instruction from the restriction instruction section 212. In the case where the switch 60b shorts the electric power lines 64v and 64w, the resistor 62b adjusts the current flowing in the motor coils 50v and 50w.

[0079] The switch 60c shorts the electric power lines 64u and 64w corresponding to the motor coils 50u and 50w, respectively, in accordance with an instruction from the restriction instruction section 212. In the case where the switch 60c shorts the electric power lines 64u and 64w, the resistor 62c adjusts the current flowing in the motor coils 50u and 50w.

[0080] In addition, the resistors 62a to 62c can be omitted. In this case, by short-circuiting the motor 46, a damping force can be generated by an electromotive force generated in the motor 46. Also, one of the three switches 60a to 60c can be omitted. That is, the number of switches can be two.

[0081] The restriction instruction portion 212 causes the switches 60a, 60b, and 60c to be turned on in a case where the collision detection portion 211 detects a collision of the vehicle 1. As a result, the motor coils 50u, 50v, and 50w are short-circuited. That is, the motor 46 is short-circuited.

[0082] [4. Processing of the control ECU]

[0083] Figure 4 is a flowchart showing an example of the processing of the electric suspension control ECU 20.

[0084] First, in step S101, the collision detection portion 211 determines whether or not a collision of the vehicle 1 is detected on the basis of the detection result of the acceleration sensor S1.

[0085] In a case where it is determined that a collision is not detected (step S101; No), the processing becomes a standby state. In a case where the collision detection portion 211 determines that a collision is detected (step S101; Yes), the processing proceeds to step S103.

[0086] Then, in step S103, the restriction instruction portion 212 restricts the voltage supplied to the respective motors 46 of the 1st electric actuator 12A to the 4th electric actuator 12D via the voltage-boosting circuit 26 to be equal to or lower than the prescribed voltage VA (including a case where the supply of electric power to the motor 46 is stopped).

[0087] Next, in step S105, the restriction instruction portion 212 causes the respective motors 46 of the 1st electric actuator 12A to the 4th electric actuator 12D to be short-circuited via the short-circuiting circuit 24.

[0088] Next, in step S107, the restriction instruction portion 212 determines whether or not the vehicle 1 has stopped.

[0089] In a case where the restriction instruction portion 212 determines that the vehicle 1 has not stopped (step S107; No), the processing becomes a standby state. That is, the restriction instruction portion 212 maintains the short-circuiting of the motor 46. In a case where the restriction instruction portion 212 determines that the vehicle 1 has stopped (step S107; Yes), the processing proceeds to step S109.

[0090] Then, in step S109, the restriction instruction portion 212 releases the short-circuiting of the respective motors 46 of the 1st electric actuator 12A to the 4th electric actuator 12D via the short-circuiting circuit 24. Then, the processing ends.

[0091] As described with reference to Figure 4 the voltage supplied to the motor 46 is restricted to be equal to or lower than the prescribed voltage VA in a case where it is determined that a collision has occurred, so it is possible to improve the safety of the motor 46.

[0092] Further, in a case where it is determined that a collision has occurred, the motor 46 is short-circuited, and thus, the motor 46 can generate regenerative electric power, and a braking force can be applied to the motor 46. Therefore, it is possible to restrict the operation of the electric actuator 12 that constitutes the electric suspension device 10.

[0093] Further, the short-circuit of the motor 46 is maintained until it is determined that the vehicle 1 has stopped. Therefore, until the vehicle 1 has stopped, the motor 46 can generate regenerative electric power, and a braking force can be applied to the motor 46. Therefore, it is possible to restrict the operation of the electric actuator 12 that constitutes the electric suspension device 10.

[0094] [5. Structure and Effect]

[0095] As described above, the vehicle 1 of the present embodiment has a collision sensor (for example, the acceleration sensor S1) that detects a collision, a high-voltage component (for example, the electric actuator 12) that is disposed outside the vehicle body BD, a battery 16 and a step-up circuit 26 that supply a high voltage VH to the high-voltage component, and an electric suspension control ECU 20 that controls the step-up circuit 26 and the high-voltage component, and in a case where the collision sensor detects a collision, the electric suspension control ECU 20 restricts the supply of the high voltage VH to the high-voltage component.

[0096] According to this structure, in a case where the collision sensor detects a collision, the electric suspension control ECU 20 restricts the supply of the high voltage VH to the high-voltage component. Therefore, it is possible to improve the safety of the high-voltage component.

[0097] Further, in a case where the collision sensor detects a collision, the electric suspension control ECU 20 restricts the voltage supplied to the high-voltage component (for example, the electric actuator 12) to be equal to or lower than a prescribed voltage VA.

[0098] According to this structure, in a case where the collision sensor detects a collision, the electric suspension control ECU 20 restricts the voltage supplied to the high-voltage component to be equal to or lower than a prescribed voltage VA. Therefore, it is possible to improve the safety of the high-voltage component.

[0099] Further, the high-voltage component (for example, the electric actuator 12) has a motor 46, and in a case where the collision sensor detects a collision, the electric suspension control ECU 20 short-circuits the motor 46.

[0100] According to this structure, in a case where the collision sensor detects a collision, the electric suspension control ECU 20 short-circuits the motor 46. Therefore, it is possible to cause the motor 46 to generate regenerative electric power, and a braking force can be applied to the motor 46. Therefore, it is possible to restrict the operation of the high-voltage component (for example, the electric actuator 12).

[0101] Further, the high-voltage component is an electric actuator 12 of the electric suspension device 10, the collision sensor is an acceleration sensor S1 that detects an acceleration a of the electric actuator 12, and the electric suspension control ECU 20 controls the electric actuator 12 based on a detection result of the acceleration sensor S1.

[0102] According to this structure, the collision is detected based on the detection result of the acceleration sensor S1 that detects the acceleration a of the electric actuator 12, and thus the collision can be detected with a simple structure. Further, the electric actuator 12 is controlled based on the detection result of the acceleration sensor S1, and thus the electric actuator 12 can be caused to act appropriately.

[0103] Further, the electric suspension control ECU 20 maintains the short circuit of the motor 46 during a period from when the collision is detected by the collision sensor (for example, the acceleration sensor S1) to when the vehicle 1 stops.

[0104] Thus, the motor 46 can be caused to generate regenerative electric power until the vehicle 1 stops, and thus a braking force can be applied to the motor 46. Thus, the action of the high-voltage component (for example, the electric actuator 12) can be limited.

[0105] [6. Other Embodiments]

[0106] In addition, the present application is not limited to the structures of the above-described embodiments, and can be implemented in various manners without departing from the gist thereof.

[0107] For example, in the above-described embodiments, a case where the "high-voltage component" is the electric actuator 12 is described, but is not limited thereto. The "high-voltage component" can be, for example, a hub motor.

[0108] Further, in the above-described embodiments, a case where the "power supply device" is the battery 16 and the step-up circuit 26 is described, but is not limited thereto. The "power supply device" can be a generator such as an alternator. Further, the "power supply device" can not have the step-up circuit 26, or can have a step-down circuit.

[0109] Further, in the above-described embodiments, a case where the electric actuator 12 has the acceleration sensor S1, the stroke sensor S2, the rotation angle sensor S3, and the voltage sensor S4 is described, but the voltage sensor S4 can be omitted.

[0110] Further, in the above-described embodiments, a case where the "collision sensor" is the acceleration sensor S1 is described, but is not limited thereto. The "collision sensor" can be any sensor that can detect the collision of the vehicle 1. The "collision sensor" can be, for example, a front collision sensor that activates an airbag.

[0111] Further, in the above-described embodiment, the case where the electric suspension device 10 has the first to fourth electric actuators 12A to 12D is described, but is not limited thereto. For example, it can be a manner where the electric suspension device 10 has the third and fourth electric actuators 12C and 12D, and does not have the first and second electric actuators 12A and 12B. Conversely, it can be a manner where the electric suspension device 10 has the first and second electric actuators 12A and 12B, and does not have the third and fourth electric actuators 12C and 12D.

[0112] Further, in the above-described embodiment, the case where the limitation instruction portion 212 shorts the motor 46 by the short-circuiting circuit 24 is described, but is not limited thereto. For example, the limitation instruction portion 212 can also short the motor 46 by setting the three FETs (Field Effect Transistor) on the negative side to be in conduction after setting the three FETs on the positive side of the inverter 22 to be in cutoff.

[0113] Further, in the case where the control of the electric actuator 12 cannot be continued normally in the state where the voltage supplied to the motor 46 is limited to be equal to or lower than the prescribed voltage VA, the motor 46 needs to be short-circuited as described above. However, in the case where the control of the electric actuator 12 can be continued normally in the state where the voltage supplied to the motor 46 is limited to be equal to or lower than the prescribed voltage VA, the motor 46 can not be short-circuited.

[0114] Figure 2 At least a part of each functional block illustrated is configured to be realized by hardware, or realized by hardware and software, and is not limited to a structure in which independent hardware resources are configured as illustrated.

[0115] The control program executed by the processor 21B of the electric suspension control ECU 20 of the electric suspension device 10 is stored in the memory 21A, but can also be stored in an externally connected HDD or the like.

[0116] In order to easily understand the processing of the electric suspension control ECU 20 of the electric suspension device 10, Figure 4 The processing units of the flowcharts illustrated are divided according to the main processing contents. The embodiments are not limited by the division method or the names of the processing units illustrated in the flowcharts. Figure 4 The processing units of the flowcharts illustrated are divided according to the main processing contents. The embodiments are not limited by the division method or the names of the processing units illustrated in the flowcharts.

[0117] The control method of the electric suspension control ECU 20 can be implemented by causing the processor 21B of the electric suspension control ECU 20 to execute a control program corresponding to the control method of the electric suspension control ECU 20. The control program can be recorded in advance in a recording medium recorded in a manner capable of being read by a computer. The recording medium can use a magnetic recording medium, an optical recording medium, or a semiconductor memory device. Specifically, a mobile or stationary recording medium such as a floppy disk, a CD-ROM (Compact Disk Read Only Memory), a DVD (Digital Versatile Disc), a Blu-ray (registered trademark) Disc, a magneto-optical disk, a flash memory, a card-type recording medium, or the like can be cited. The recording medium can be an internal storage device of the electric suspension device 10, that is, a RAM, a ROM, a nonvolatile storage device such as an HDD, or the like. The control program corresponding to the control method of the electric suspension control ECU 20 can be stored in a server device or the like, and the control method of the electric suspension control ECU 20 can be implemented by downloading the control program from the server device to the electric suspension control ECU 20.

[0118] [7. Structure supported by the above-described embodiments]

[0119] The above-described embodiments support the following structures.

[0120] (Structure 1) A vehicle, wherein the vehicle has: a collision sensor that detects a collision; a high-voltage component that is disposed outside a vehicle body; a power supply device that supplies a high voltage to the high-voltage component; and a control device that controls the power supply device and the high-voltage component, wherein the control device limits supply of the high voltage to the high-voltage component in a case where the collision sensor detects a collision.

[0121] According to the vehicle of Structure 1, the control device limits supply of the high voltage to the high-voltage component in a case where the collision sensor detects a collision. Therefore, it is possible to improve the safety of the high-voltage component.

[0122] (Structure 2) The vehicle according to Structure 1, wherein the control device limits a voltage supplied to the high-voltage component to a prescribed voltage or less in a case where the collision sensor detects a collision.

[0123] According to the vehicle of Structure 2, the control device limits a voltage supplied to the high-voltage component to a prescribed voltage or less in a case where the collision sensor detects a collision. Therefore, it is possible to improve the safety of the high-voltage component.

[0124] (Structure 3) The vehicle according to Structure 1 or 2, wherein the high-voltage component has a motor, and the control device shorts the motor in a case where the collision sensor detects a collision.

[0125] According to the vehicle of Structure 3, the control device shorts the motor in a case where the collision sensor detects a collision. Therefore, it is possible to cause the motor to generate regenerative electric power and apply a braking force to the motor.

[0126] (Structure 4) The vehicle according to Structure 3, wherein the high-voltage component is an electric actuator of an electric suspension device, the collision sensor is an acceleration sensor that detects an acceleration of the electric actuator, and the control device controls the electric actuator on the basis of a detection result of the acceleration sensor.

[0127] According to the vehicle of Structure 4, the collision sensor is an acceleration sensor that detects an acceleration of the electric actuator. Therefore, it is possible to detect a collision with a simple structure. Further, the control device controls the electric actuator on the basis of a detection result of the acceleration sensor. Therefore, it is possible to control the electric actuator with a simple structure.

[0128] (Structure 5) The vehicle according to Structure 3 or 4, wherein the control device maintains the shorting of the motor during a period from when the collision sensor detects a collision to when the vehicle stops.

[0129] According to the vehicle of Structure 5, the shorting of the motor is maintained during a period from when the collision sensor detects a collision to when the vehicle stops. Therefore, it is possible to cause the motor to generate regenerative electric power and apply a braking force to the motor during a period until the vehicle stops.

Claims

1. A vehicle, wherein the vehicle has: a collision sensor that detects a collision; a high-voltage component that is disposed outside a vehicle body; a power supply device that supplies a high voltage to the high-voltage component; and a control device that controls the power supply device and the high-voltage component, the high-voltage component is an electric actuator of an electric suspension device, the collision sensor is an acceleration sensor that detects an acceleration of the electric actuator, the acceleration sensor is disposed so as to be inclined by a prescribed angle with respect to a vertical direction to a width direction or a front-rear direction of the vehicle body, the processor detects a collision of the vehicle based on a component in an inclined direction of the acceleration sensor of the acceleration detected by the acceleration sensor, in a case where the collision sensor detects a collision, the control device limits supply of the high voltage to the high-voltage component.

2. The vehicle according to claim 1, wherein in a case where the collision sensor detects a collision, the control device limits a voltage supplied to the high-voltage component to be below a prescribed voltage.

3. The vehicle according to claim 1 or 2, wherein the high-voltage component has a motor, in a case where the collision sensor detects a collision, the control device shorts the motor.

4. The vehicle according to claim 3, wherein the control device controls the electric actuator based on a detection result of the acceleration sensor.

5. The vehicle according to claim 3, wherein the control device maintains the shorting of the motor for a period from when the collision is detected by the collision sensor until the vehicle stops.

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