Control device and control method

Abstract

To provide a control device capable of suppressing degradation of a battery by appropriately switching a target temperature range of the battery according to the situation.SOLUTION: A control device for a vehicle includes a rotary electric machine for driving the vehicle, a power storage device that exchanges electric power with the rotary electric machine, a temperature control device that adjusts a temperature of the power storage device, and a navigation device. The control device includes: an acquisition unit that acquires information indicating an operating state of the vehicle and a temperature of the power storage device; a target temperature range determination unit that determines a target temperature range for the power storage device corresponding to the operating state; and a power storage control unit that controls an operation of the power storage device on the basis of the temperature of the power storage device and the target temperature range. The operating states include a first traveling state in which the vehicle travels without coordination with the navigation device, and a second traveling state in which the vehicle travels in coordination with the navigation device. The target temperature range corresponding to the second traveling state is narrower than the target temperature range corresponding to the first traveling state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a control device and a control method. [Background technology]

[0002] In recent years, research and development of secondary batteries that contribute to energy efficiency has been conducted to ensure that more people have access to affordable, reliable, sustainable, and advanced energy. For example, it is known that battery temperature management is a measure to suppress deterioration of batteries mounted on electric vehicles. For example, a method is known in which a user selects a preferred mode from multiple preset charging / operation modes, and the battery temperature is maintained within a temperature range corresponding to the selected mode (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5055347 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to maintain the battery at a target temperature, lower and upper limits of the battery temperature are set in advance, and the battery temperature is adjusted so that the battery temperature is maintained between these lower and upper limits. However, if the lower and upper limits of the battery temperature are set to the same value without considering the situation, the battery cannot be maintained at the target temperature, and as a result, the battery may deteriorate and cause problems with its durability.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide a control device and a control method capable of suppressing deterioration of a battery by appropriately switching a target temperature range of the battery according to the situation, and thereby contributing to energy efficiency. [Means for solving the problem]

[0006] The control device and the control method according to the present invention employ the following configuration. (1) A control device of one embodiment of the present invention is a control device for a vehicle including a rotating electric machine for driving the vehicle, a power storage device that exchanges power with the rotating electric machine, a temperature adjustment device that adjusts the temperature of the power storage device, and a navigation device, wherein the control device includes an acquisition unit that acquires information indicating an operating state of the vehicle and a temperature of the power storage device, a target temperature range determination unit that determines a target temperature range of the power storage device corresponding to the operating state, and a power storage device control unit that controls the operation of the power storage device based on the temperature of the power storage device and the target temperature range, wherein the operating states include a first driving state in which the vehicle runs without coordinating with the navigation device and a second driving state in which the vehicle runs in coordinating with the navigation device, and the target temperature range corresponding to the second driving state is narrower than the target temperature range corresponding to the first driving state.

[0007] In an aspect (2), in the control device according to the aspect (1) above, the second driving state is a state in which the vehicle is automatically driven in cooperation with the navigation device.

[0008] In an aspect (3), in the control device according to the aspect (2) above, an automatic driving control unit is further provided that controls automatic driving of the vehicle, and when the operating state of the vehicle is the second driving state and it is estimated that the temperature of the storage device will deviate from the target temperature range corresponding to the second driving state, the automatic driving control unit switches the operating state of the vehicle from the second driving state to the first driving state.

[0009] In an aspect (4), in the control device according to the aspect (1) above, the operating state further includes a charging state in which the power storage device is charged.

[0010] In an aspect (5), in the control device according to the aspect (4) above, the target temperature range corresponding to the second driving state is the same as the target temperature range corresponding to the state in which the vehicle is DC charged in the charging state.

[0011] In an aspect (6), in the control device according to the aspect (4) above, the target temperature range corresponding to the first driving state is the same as the target temperature range corresponding to the state in which the vehicle is charged with AC in the charging state.

[0012] In an aspect (7), in the control device according to the aspect (4) above, the target temperature range corresponding to a state in which direct current charging is performed in the charging state is narrower than the target temperature range corresponding to a state in which alternating current charging is performed in the charging state.

[0013] In an embodiment (8), in the control device according to any one of the embodiments (1) to (7) above, the control device further includes a temperature adjustment device control unit that controls the temperature adjustment device so that the temperature of the power storage device falls within the target temperature range.

[0014] In an embodiment (9), in the control device according to the embodiment (8) above, the acquisition unit further acquires server information relating to the destination of the vehicle or an area through which the vehicle is scheduled to travel from an external server, and the temperature control device control unit controls the temperature control device based on the acquired server information.

[0015] In the aspect (10), in the control device related to the aspect (3) above, when the operating state of the vehicle is the second driving state and the destination of the vehicle is a power supply facility, and pre-cooling control of the power storage device is performed by control of the temperature adjustment device, the automatic driving control unit maintains the operating state of the vehicle in the second driving state even if the temperature of the power storage device deviates from the target temperature range corresponding to the second driving state as a result of the pre-cooling control.

[0016] (11) Another aspect of the control method of the present invention is a control method for a vehicle including a rotating electric machine for driving the vehicle, a power storage device that exchanges power between the rotating electric machine and the rotating electric machine, a temperature adjustment device that adjusts the temperature of the power storage device, and a navigation device, wherein a computer acquires information indicating an operating state of the vehicle and a temperature of the power storage device, determines a target temperature range of the power storage device corresponding to the operating state, and controls the operation of the power storage device based on the temperature of the power storage device and the target temperature range, wherein the operating states include a first driving state in which the vehicle runs without coordinating with the navigation device and a second driving state in which the vehicle runs in autonomous driving in cooperation with the navigation device, and the target temperature range corresponding to the second driving state is narrower than the target temperature range corresponding to the first driving state.

[0017] In an aspect (12), in the control method according to the aspect (11) above, when the operating state of the vehicle is the second driving state and it is estimated that the temperature of the storage device will deviate from the target temperature range corresponding to the second driving state, the operating state of the vehicle is switched from the second driving state to the first driving state. Effect of the Invention

[0018] According to the above aspects (1) to (12), the target temperature range of the battery is appropriately switched depending on the situation, thereby making it possible to suppress deterioration of the battery. [Brief description of the drawings]

[0019] [Figure 1]1 is a diagram showing an example of the configuration of a vehicle M according to an embodiment. [Diagram 2] FIG. 2 is a functional block diagram showing an example of a control unit 40 according to the embodiment. [Diagram 3] 10 is a flowchart showing an example of the flow of a temperature management process for a battery 52 executed by a control unit 40 according to the embodiment. [Figure 4] FIG. 4 is a diagram showing an example of target temperature range information TD according to the embodiment. [Diagram 5] 4 is a diagram for explaining the contents of control by a battery control unit 43 according to the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of a control device and a control method of the present invention will be described with reference to the drawings. The control device of the embodiment controls the overall operation of an electric vehicle (hereinafter, "vehicle M"). The vehicle M is, for example, a two-wheeled, three-wheeled, four-wheeled, or other vehicle, and its drive source is a rotating electric machine (motor). The rotating electric machine operates using power generated by a generator connected to an internal combustion engine, or using power discharged from a battery. Hereinafter, the vehicle M is assumed to be, for example, an electric vehicle such as a BEV (Battery Electric Vehicle) that runs using an electric motor driven by power supplied from an on-board battery.

[0021] [Vehicle M] FIG. 1 is a diagram showing an example of the configuration of a vehicle M according to an embodiment. The vehicle M includes, for example, a motor 10, driving wheels 12, a brake device 14, a vehicle sensor 20, a PCU (Power Control Unit) 30, a control unit 40, a power supply device 50, an air conditioning device 60, a navigation device 70, and a storage device 80. The power supply device 50 includes, for example, a battery 52, a battery sensor 54, and a temperature adjustment device 56. The vehicle M is an example of a "vehicle." The motor 10 is an example of a "rotating electric machine" for driving the vehicle. The battery 52 is an example of an "electricity storage device" that exchanges electric power with the rotating electric machine. The temperature adjustment device 56 is an example of a "temperature adjustment device" that adjusts the temperature of the electricity storage device. The navigation device 70 is an example of a "navigation device."

[0022] The motor 10 is, for example, a three-phase AC motor. A rotor of the motor 10 is connected to the drive wheels 12. The motor 10 outputs power to the drive wheels 12 using electric power supplied from a battery 52. ​​The motor 10 also generates power using the kinetic energy of the vehicle when the vehicle decelerates.

[0023] The braking device 14 includes, for example, a brake caliper, a cylinder that transmits hydraulic pressure to the brake caliper, and an electric motor that generates hydraulic pressure in the cylinder. The braking device 14 may include a backup mechanism that transmits hydraulic pressure generated by operating the brake pedal to the cylinder via a master cylinder. The braking device 14 is not limited to the configuration described above, and may be an electronically controlled hydraulic brake device that transmits hydraulic pressure from a master cylinder to the cylinder.

[0024] The vehicle sensor 20 includes an accelerator opening sensor, a vehicle speed sensor, and a brake depression sensor. The accelerator opening sensor is attached to an accelerator pedal that receives an acceleration command from a driver. The accelerator opening sensor detects the amount of operation of the accelerator pedal, and outputs the detected amount of operation to the control unit 40 as the accelerator opening. The vehicle speed sensor includes, for example, wheel speed sensors attached to each wheel and a speed calculator. The vehicle speed sensor integrates the wheel speeds detected by the wheel speed sensors to derive the speed of the vehicle (vehicle speed), and outputs the derived speed information to the control unit 40. The brake depression sensor is attached to the brake pedal. The brake depression sensor detects the amount of operation of the brake pedal, and outputs the detected amount of operation to the control unit 40 as the brake depression.

[0025] The PCU 30 includes, for example, a converter 32 and a VCU (Voltage Control Unit) 34. The converter 32 is connected between a battery 52 and the motor 10. The converter 32 converts the power output by the VCU 34 into power suitable for the motor 10 and supplies the power to the motor 10. The converter 32 is, for example, an AC-DC converter. A DC side terminal of the converter 32 is connected to a DC link DL. The battery 52 is connected to the DC link DL via the VCU 34. The converter 32 converts the AC power generated by the motor 10 into DC power and outputs the DC power to the DC link DL.

[0026] The VCU 34 is connected between the battery 52 and the motor 10. The VCU 34 increases or decreases the voltage of the power supplied from the battery 52, and outputs the power to the DC link DL. The VCU 34 is, for example, a DC-DC converter.

[0027] The control unit 40 controls the overall operation of the vehicle M. The control unit 40 controls the motor 10 and the brake device 14, for example, based on information output by the vehicle sensor 20. The control unit 40 also controls the VCU 34 to adjust the power supplied to the motor 10, for example, based on information output by the vehicle sensor 20. The control unit 40 also determines a target temperature range for the battery 52, and controls the temperature adjustment device 56 in accordance with the determined target temperature range. The control unit 40 also controls the automatic driving of the vehicle M in cooperation with the navigation device 70.

[0028] Each of the functional parts of the control unit 40 is realized by, for example, a computer processor such as an ECU (Electronic Control Unit) or a CPU (Central Processing Unit) executing a program (software). Each of the functional parts of the control unit 40 may be realized by hardware (circuit parts) such as an LSI (Large Scale Integration), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a GPU (Graphics Processing Unit), or may be realized by a combination of software and hardware. Each of the functions of the control unit 40 may be incorporated into a separate control device, for example, a control device such as a motor ECU, a brake ECU, or a battery / VCUECU. The functions of the control unit 40 will be described in detail later.

[0029] The battery 52 supplies power to various components mounted on the vehicle M. The battery 52 is, for example, a battery pack including a power storage unit (not shown) that stores power used for the vehicle M to travel. The battery 52 may be, for example, a cassette-type battery pack that is easily detachable from the vehicle M, or may be a stationary type that is not easily detachable from the vehicle M. The power storage unit (not shown) included in the battery 52 is, for example, a chargeable and dischargeable secondary battery such as a lithium ion battery. Examples of the secondary battery included in the battery 52 include a lead-acid battery, a nickel-metal hydride battery, a sodium ion battery, and the like, as well as a capacitor such as an electric double layer capacitor, or a composite battery that combines a secondary battery and a capacitor. The battery 52 can be charged by power provided by an external power source 100 that is a charger outside the vehicle M. The battery 52 may be a FCS (Fuel Cell Stack).

[0030] The battery sensor 54 measures physical quantities such as the current, voltage, and temperature of the battery 52. ​​The battery sensor 54 includes, for example, a current sensor, a voltage sensor, and a temperature sensor. The battery sensor 54 measures the temperature of the battery 52 under the control of the control unit 40, for example, and outputs information indicating the measured temperature to the control unit 40. The battery sensor 54 also measures the current and voltage of the battery 52, and outputs information indicating the measured current and voltage to the control unit 40.

[0031] The temperature adjustment device 56 adjusts the temperature of the battery 52, for example, based on the control of the control unit 40. The temperature adjustment device 56 is, for example, a heat exchanger (chiller) that exchanges heat between a heat medium and an air-conditioning heat medium. The heat medium is, for example, water, radiator liquid, coolant liquid, etc. The air-conditioning heat medium is, for example, fluorocarbon, a fluorocarbon substitute, etc.

[0032] The air conditioner 60 adjusts the temperature inside the passenger compartment of the vehicle M in accordance with the control of the control unit 40 based on instructions input by an occupant of the vehicle M via an input interface (not shown), for example.

[0033] The navigation device 70 includes, for example, an HMI (Human machine Interface) 72, a GNSS (Global Navigation Satellite System) receiver 74, and a navigation control device 76. The HMI 72 includes, for example, a touch panel display device, a speaker, a microphone, and the like. The GNSS receiver 74 measures its own position (the position of the vehicle M) based on radio waves arriving from a GNSS satellite (for example, a GPS satellite). The navigation control device 76 includes, for example, a CPU (Central Processing Unit) and various storage devices, and controls the entire navigation device 70. Map information (navigation map) is stored in the storage device. The navigation map is a map that represents roads with nodes and links. The navigation control device 76 determines a route from the position of the vehicle M measured by the GNSS receiver 74 to a destination specified using the HMI 72 by referring to the navigation map. The navigation control device 76 may also transmit the position of the vehicle M and the destination to the navigation server 200 using a communication device (not shown), and obtain the route returned from the navigation server 200. The navigation control device 76 outputs to the control unit 40 route information of the route determined by any of the above methods.

[0034] The storage device 80 stores various information necessary for controlling the vehicle M. The storage device 80 stores, for example, target temperature range information TD of the battery 52. ​​The storage device 80 is realized by an Electrically Erasable Programmable Read Only Memory (EEPROM), a Read Only Memory (ROM), a Random Access Memory (RAM), or the like. At least a part of the information included in the storage device 80 may be stored in an external device capable of communicating with the vehicle M.

[0035] The external power source 100 supplies power to the battery 52 of the vehicle M. The external power source 100 includes, for example, a charging cable 104 and a charging gun 102 connected to the charging cable 104. The charging gun 102 is connected to a charging port (not shown) provided on the body of the vehicle M by an occupant of the vehicle M or the like. The external power source 100 supplies power to the battery 52 of the vehicle M via the charging cable 104 and the charging gun 102, thereby charging the battery 52. ​​Alternatively, the charging cable may be provided on the body or the like so as to be able to be pulled out to the outside of the vehicle M. A first end of both ends of the charging cable is fixed to the vehicle M, and a charging plug is provided on a second end of both ends of the charging cable 104. The charging plug is connected to a plug receptacle of the external power source 100, which is, for example, a household outlet (hardware plug connector) or the like.

[0036] The navigation server 200 transmits route information to the vehicle M in response to a request from the vehicle M via the communication network NW. The navigation server 200 also transmits to the vehicle M the distance to the destination of the vehicle M (e.g., a charging facility), the weather forecast (temperature) and road surface information for the area through which the vehicle M passes, and the like.

[0037] [Configuration of control unit 40]

[0038] 2 is a functional block diagram showing an example of the control unit 40 according to the embodiment. The control unit 40 includes, for example, an acquisition unit 41, a target temperature range determination unit 42, a battery control unit 43, a temperature adjustment device control unit 44, and an automatic driving control unit 45.

[0039] The acquisition unit 41 acquires various information related to the vehicle M. For example, the acquisition unit 41 acquires information on the temperature of the battery 52 measured by the battery sensor 54. The acquisition unit 41 also acquires information indicating the operating state of the vehicle M, such as information indicating whether the vehicle M is running, information indicating whether the vehicle M is running in cooperation with the navigation device 70, the speed of the vehicle M, the outside temperature of the vehicle M, and information indicating whether the vehicle M is charging (information indicating a charging state in which the charging gun 102 is connected to the vehicle M and charging). The acquisition unit 41 also acquires information such as the destination of the vehicle M (for example, a new charging facility), the route to the destination, the distance to the destination, the weather forecast (temperature) and road surface information of the area through which the vehicle M passes, from the navigation server 200, for example. The acquisition unit 41 is an example of an "acquisition unit." The operating state includes a first running state in which the vehicle M runs without linking with the navigation device 70, and a second running state in which the vehicle M runs in cooperation with the navigation device 70. This second driving state is a state in which the vehicle M is automatically driven in cooperation with a navigation device. Alternatively, this second driving state may be a state in which route guidance is displayed on a display device (not shown) provided in the vehicle M in cooperation with the navigation device.

[0040] The target temperature range determination unit 42 determines a target temperature range of the battery 52 corresponding to the operation information based on the acquired operation information related to the operation of the vehicle M and the target temperature range information TD stored in the storage device 80. The target temperature range determination unit 42 is an example of a "target temperature range determination unit." The target temperature range corresponding to the second running state in which the vehicle runs in cooperation with the navigation device 70 is narrower than the target temperature range corresponding to the first running state in which the vehicle runs without cooperation with the navigation device 70. Details of the processing by the target temperature range determination unit 42 will be described later.

[0041] The battery control unit 43 controls the operation of the battery 52 based on the temperature of the battery 52 acquired by the acquisition unit 41 and the target temperature range determined by the target temperature range determination unit 42. For example, when the acquired temperature of the battery 52 deviates from the determined target temperature range, the battery control unit 43 controls the output of the battery 52 so as to reduce or stop the output of the battery 52. ​​The battery control unit 43 is an example of a "power storage device control unit." Details of the processing of the battery control unit 43 will be described later.

[0042] The temperature adjustment device control unit 44 controls the temperature adjustment device 56. For example, the temperature adjustment device control unit 44 controls the temperature adjustment device 56 so that the acquired temperature of the battery 52 falls within the determined target temperature range. The temperature adjustment device control unit 44 is an example of a "temperature adjustment device control unit." Details of the processing of the temperature adjustment device control unit 44 will be described later.

[0043] The automatic driving control unit 45 controls automatic driving of the vehicle M. For example, the automatic driving control unit 45 cooperates with the navigation device 70 to automatically drive the vehicle M to a destination. The automatic driving control unit 45 is an example of an "automatic driving control unit." When the operating state of the vehicle M is the second running state and it is estimated that the temperature of the battery 52 will deviate from the target temperature range corresponding to the second running state, the automatic driving control unit 45 switches the operating state of the vehicle M from the second running state to the first running state. Details of the processing of the automatic driving control unit 45 will be described later.

[0044] [Processing flow] Next, a description will be given of an example of a temperature management process for the battery 52, mainly focusing on the operation of the control unit 40. Fig. 3 is a flowchart showing an example of the flow of the temperature management process for the battery 52 executed by the control unit 40 according to the embodiment.

[0045] First, the acquisition unit 41 acquires information indicating an operation state of the vehicle M (step S101). The information indicating the operation state of the vehicle M includes, for example, information indicating whether the vehicle M is running or not, information indicating whether the vehicle M is running in cooperation with the navigation device 70 or not, information indicating whether the vehicle M is being charged or not, and the like.

[0046] Next, the target temperature range determination unit 42 determines the target temperature range of the battery 52 based on the acquired information indicating the operating state of the vehicle M and the target temperature range information TD stored in the storage device 80 (step S103). FIG. 4 is a diagram showing an example of the target temperature range information TD according to the embodiment. For example, when the acquired information indicating the operating state of the vehicle M indicates a state in which the vehicle is traveling without cooperation with the navigation device 70, the target temperature range determination unit 42 determines the range in which the lower limit temperature is "10°C" and the upper limit temperature is "35°C" associated with "No. 1: traveling (without navigation cooperation)" in FIG. 4 is "10°C" and the upper limit temperature is "35°C", that is, the range of 10 to 35°C, as the target temperature range. Also, for example, when the acquired information indicating the operating state of the vehicle M indicates a state in which the vehicle is traveling in cooperation with the navigation device 70, the target temperature range determination unit 42 determines the range in which the lower limit temperature is "15°C" and the upper limit temperature is "25°C" associated with "No. 2: traveling (with navigation cooperation)" in FIG. 4 is "15°C" and the upper limit temperature is "25°C", that is, the range of 15 to 25°C, as the target temperature range. In this way, the target temperature range corresponding to "No. 2: driving (with navigation cooperation)" is determined to be narrower than the target temperature range corresponding to "No. 1: driving (without navigation cooperation)".

[0047] Also, for example, when the acquired information indicating the operating state of the vehicle M indicates that AC charging (slow charging) is in progress, the target temperature range determination unit 42 determines the target temperature range to be the range in which the lower limit temperature is "5°C" and the upper limit temperature is "35°C", that is, the range of 5 to 35°C, which is associated with "No. 3: Charging (AC charging)" in Fig. 4. This target temperature range associated with "No. 3: Charging (AC charging)" may be the same as the target temperature range associated with "No. 1: Running (without navigation linkage)".

[0048] Also, for example, when the acquired information indicating the operating state of the vehicle M indicates that DC charging (rapid charging) is in progress, the target temperature range determination unit 42 determines the range in which the lower limit temperature is "15°C" and the upper limit temperature is "25°C" associated with "No. 4: Charging (DC charging)" in Fig. 4, that is, the range of 15 to 25°C, as the target temperature range. This target temperature range corresponding to "No. 4: Charging (DC charging)" may be the same as the target temperature range corresponding to "No. 2: Running (with navigation linkage)". Also, the target temperature range corresponding to the state of DC charging is narrower than the target temperature range corresponding to the state of AC charging.

[0049] Next, the acquisition unit 41 acquires the temperature of the battery 52 measured by the battery sensor 54 (step S105). Next, the battery control unit 43 determines whether the acquired battery temperature is within the determined target temperature range (step S107).

[0050] If it is determined that the acquired battery temperature is within the determined target temperature range (step S107: Yes), the battery control unit 43 performs normal control that does not limit the output of the battery 52 (step S109). On the other hand, if it is determined that the acquired battery temperature is not within the determined target temperature range (step S107: No), the battery control unit 43 performs limiting control that reduces or stops the output of the battery 52 (step S111).

[0051] FIG. 5 is a diagram for explaining the contents of the control by the battery control unit 43 according to the embodiment. As shown in FIG. 5, when the operating state of the vehicle M is "No. 1: Running (without navigation cooperation)", normal control is performed in the target temperature range (10 to 35°C), and limit control is performed outside the target temperature range. The limit control includes a first limit control when the temperature is below the target temperature range (10 to 35°C) and a second limit control when the temperature is above the target temperature range. In the first limit control and the second limit control, the output from the battery 52 is reduced or the output is stopped. In the first limit control and the second limit control, the output from the battery 52 may be restricted more greatly as the degree of deviation from the target temperature range increases. The contents of the limit in the first limit control and the contents of the limit in the second limit control may be different.

[0052] Also, as shown in FIG. 5, when the operating state of the vehicle M is "No. 3: charging (AC charging)", normal control is performed within the target temperature range (5 to 35°C), and limit control is performed outside the target temperature range. In normal control, charging of the battery 52 is not limited. The limit control includes a first limit control when the temperature is below the target temperature range (5 to 35°C) and a second limit control when the temperature is above the target temperature range. In the first limit control and the second limit control, the charging time of the battery 52 is limited. For example, in the first limit control and the second limit control, the charging time of the battery 52 is limited to be longer (to be charged slowly). In the first limit control and the second limit control, the charging time of the battery 52 may be limited to be longer as the degree of deviation from the target temperature range increases. The content of the limit in the first limit control may be different from the content of the limit in the second limit control.

[0053] Moreover, under the above-mentioned normal control and limited control, the temperature adjustment device control unit 44 controls the temperature adjustment device 56 in parallel. For example, when the acquired temperature of the battery 52 is not included in the determined target temperature range, the temperature adjustment device control unit 44 controls the temperature adjustment device 56 so that the temperature of the battery 52 is included in the target temperature range. Under the first limited control when the temperature is below the target temperature range, the temperature adjustment device control unit 44 controls the temperature adjustment device 56 so that the battery 52 is heated. On the other hand, under the second limited control when the temperature is above the target temperature range, the temperature adjustment device control unit 44 controls the temperature adjustment device 56 so that the battery 52 is cooled. Moreover, for example, even when the acquired temperature of the battery 52 is included in the determined target temperature range, the temperature adjustment device control unit 44 controls the temperature adjustment device 56 so that the temperature of the battery 52 is unlikely to deviate from the target temperature range (for example, so that the temperature of the battery 52 approaches the median value of the target temperature range).

[0054] Furthermore, under the above-described normal control, if the operating state of vehicle M is "No. 2: Running (with navigation linkage)" and it is estimated that the temperature of battery 52 will deviate from the corresponding target temperature range (approaching the lower or upper limit of the target temperature range), the autonomous driving control unit 45 switches the operating state of vehicle M from "No. 2: Running (with navigation linkage)" to "No. 1: Running (without navigation linkage)." By performing such control, it is possible to avoid in advance a situation in which the temperature of battery 52 deviates from the target temperature range.

[0055] The acquisition unit 41 may further acquire server information related to the destination of the vehicle M or the area where the vehicle M is scheduled to travel from the external navigation server 200, and the temperature adjustment device control unit 44 may control the temperature adjustment device 56 based on the acquired server information. For example, when the distance to the charging facility acquired as the server information is short, the temperature adjustment device control unit 44 controls the temperature of the battery 52 to be lowered in preparation for the charging operation (taking into consideration that the temperature of the battery 52 will rise during the charging operation). Also, for example, when the temperature of the area where the vehicle M will pass from now on, acquired as the server information, is high (or low), the temperature adjustment device control unit 44 adjusts the temperature of the battery 52 to be lowered (raised). By performing such control, it is possible to avoid a situation in which the temperature of the battery 52 deviates from the target temperature range.

[0056] Furthermore, the temperature adjustment device control unit 44 may cause the temperature adjustment device 56 to perform pre-cooling control based on information about the destination of the vehicle M to cool the battery 52. ​​For example, when the operating state of the vehicle M is a state in which the vehicle runs in cooperation with the navigation device 70 and the destination of the vehicle M is a power supply facility (rapid charging spot), the temperature adjustment device control unit 44 may cause the temperature adjustment device 56 to perform pre-cooling control to cool the battery 52. ​​Here, when the pre-cooling control is performed, the automatic driving control unit 45 may maintain the operating state of the vehicle M in a state in which the vehicle runs in cooperation with the navigation device 70 even if the temperature of the battery 52 deviates from the target temperature range as a result of the pre-cooling control.

[0057] After the above series of processes are performed, the process returns to step S101 and the subsequent processes are repeated. For example, if the operation state of the vehicle M acquired in step S101 indicates an operation state different from the previous operation state, control according to the latest operation state after the change is performed.

[0058] According to the present embodiment described above, the target temperature range of the battery is appropriately controlled depending on the situation (operating state) in which the vehicle is operating, thereby making it possible to suppress deterioration of the battery.

[0059] The above describes the form for carrying out the present invention using an embodiment, but the present invention is not limited to such an embodiment, and various modifications and substitutions can be made within the scope that does not deviate from the gist of the present invention. [Explanation of symbols]

[0060] 10...motor, 12...driving wheel, 14...brake device, 20...vehicle sensor, 30...PCU, 32...converter, 34...VCU, 40...control unit, 41...acquisition unit, 42...target temperature range determination unit, 43...battery control unit, 44...temperature adjustment device control unit, 45...automatic driving control unit, 50...power supply device, 52...battery, 54...battery sensor, 56...temperature adjustment device, 60...air conditioner, 70...navigation device, 80...storage device, 100...external power supply, 102...charging gun, 104...charging cable, 200...navigation server, M...vehicle, NW...communication network

Claims

1. A vehicle control device including a rotating electric machine for driving a vehicle, an electric storage device that exchanges electric power between the rotating electric machine and the electric storage device, a temperature adjustment device that adjusts a temperature of the electric storage device, and a navigation device, The control device includes: an acquisition unit that acquires information indicating an operation state of the vehicle and a temperature of the power storage device; a target temperature range determination unit that determines a target temperature range of the power storage device corresponding to the operating state; a power storage device control unit that controls an operation of the power storage device based on a temperature of the power storage device and the target temperature range; Equipped with the operating state includes a first running state in which the vehicle runs without cooperation with the navigation device, and a second running state in which the vehicle runs in cooperation with the navigation device, The target temperature range corresponding to the second running state is narrower than the target temperature range corresponding to the first running state. Control device.

2. The second driving state is a state in which the vehicle is automatically driven in cooperation with the navigation device. The control device according to claim 1 .

3. An automatic driving control unit that controls automatic driving of the vehicle is further provided. the autonomous driving control unit, when the operation state of the vehicle is the second running state and it is estimated that the temperature of the power storage device will deviate from the target temperature range corresponding to the second running state, switches the operation state of the vehicle from the second running state to the first running state. The control device according to claim 2.

4. The operating state further includes a charging state in which the power storage device is charged. The control device according to claim 1 .

5. The target temperature range corresponding to the second running state is the same as the target temperature range corresponding to a state in which the battery is DC charged in the charging state. The control device according to claim 4.

6. The target temperature range corresponding to the first running state is the same as the target temperature range corresponding to a state in which the battery is charged with an alternating current in the charging state. The control device according to claim 4.

7. the target temperature range corresponding to a state in which the battery is charged with a direct current in the charging state is narrower than the target temperature range corresponding to a state in which the battery is charged with an alternating current in the charging state. The control device according to claim 4.

8. a temperature adjustment device control unit that controls the temperature adjustment device so that the temperature of the power storage device falls within the target temperature range, A control device according to any one of claims 1 to 7.

9. The acquisition unit further acquires server information related to a destination of the vehicle or an area in which the vehicle is scheduled to travel from an external server, The temperature adjustment device control unit controls the temperature adjustment device based on the acquired server information. The control device according to claim 8.

10. When the operating state of the vehicle is the second running state and the destination of the vehicle is a power supply facility, and pre-cooling control of the power storage device is performed by control of the temperature adjustment device, the automatic driving control unit maintains the operating state of the vehicle in the second running state even if the temperature of the power storage device deviates from the target temperature range corresponding to the second running state as a result of the pre-cooling control. The control device according to claim 3.

11. A method for controlling a vehicle including a rotating electric machine for driving the vehicle, an electric storage device for transmitting and receiving electric power between the rotating electric machine and the electric storage device, a temperature adjustment device for adjusting a temperature of the electric storage device, and a navigation device, comprising: The computer acquiring information indicating an operating state of the vehicle and a temperature of the power storage device; determining a target temperature range for the power storage device corresponding to the operating state; controlling an operation of the power storage device based on a temperature of the power storage device and the target temperature range; The operating state includes a first driving state in which the vehicle travels without cooperation with the navigation device, and a second driving state in which the vehicle travels in an autonomous driving mode in cooperation with the navigation device, The target temperature range corresponding to the second running state is narrower than the target temperature range corresponding to the first running state. Control methods.

12. when the operation state of the vehicle is the second running state and it is estimated that the temperature of the power storage device will deviate from the target temperature range corresponding to the second running state, switching the operation state of the vehicle from the second running state to the first running state. The control method according to claim 11.

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