Charging control device

Abstract

To provide a charging control device capable of suppressing a decrease of SOC due to battery temperature control during vehicle charging.SOLUTION: A charging control device comprises a control unit, and the control unit limits power consumption of a battery temperature control actuator during vehicle charging to be within an output limit of a charging station.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a charging control device.

Background Art

[0002] Patent Document 1 discloses a technique for limiting the power for charging a battery so that the sum of the power for charging the battery and the power consumption of a water heater does not exceed the maximum output of a charging station.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique disclosed in Patent Document 1, there is no restriction on the power consumption by the battery temperature control actuator, and power consumption exceeding the maximum output of the charging stand is allowed. Therefore, there is a risk that the SOC (State Of Charge) of the vehicle may decrease even while the vehicle is being charged.

[0005] The present disclosure has been made in view of the above, and an object thereof is to provide a charging control device capable of suppressing a decrease in SOC due to battery temperature control during vehicle charging.

Means for Solving the Problems

[0006] The charging control device according to the present disclosure includes a control unit, and the control unit restricts the power consumption of the battery temperature control actuator during vehicle charging to be equal to or less than the output limit of the charging stand.

Effects of the Invention

[0007] According to the present disclosure, it is possible to suppress a decrease in SOC due to battery temperature control during vehicle charging.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0009] The charging control device according to an embodiment of the present disclosure will be described with reference to the drawings. Note that the components in the following embodiments include those that can be replaced and are easy for those skilled in the art, or those that are substantially the same.

[0010] (Charging Control Device) The configuration of the charging control device according to the embodiment will be described with reference to FIGS. 1 to 3. The charging control device according to the embodiment is mounted on, for example, a hybrid vehicle (HEV: Hybrid Electric Vehicle), a plug-in hybrid vehicle (PHEV: Plug-in Hybrid Electric Vehicle), an electric vehicle (BEV: Battery Electric Vehicle), or the like.

[0011] As shown in FIG. 1, the charging control device 1 includes a charging control unit 11, a thermal management control unit 12, and a battery temperature control actuator 13.

[0012] The charging control unit 11 and the thermal management control unit 12 are realized by a processor such as a CPU (Central Processing Unit) and a memory (main memory unit) such as a RAM (Random Access Memory) and a ROM (Read Only Memory). Further, the charging control unit 11 and the thermal management control unit 12 limit the power consumption of the battery temperature control actuator 13 during vehicle charging to be equal to or less than the output limit of the charging stand 2 (for example, equal to or less than the maximum output).

[0013] Specifically, the charging control unit 11 acquires information regarding the maximum power that the charging stand 2 can output (hereinafter referred to as "stand maximum output information") from the currently charging charging stand 2. Subsequently, the charging control unit 11 determines the maximum chargeable power in consideration of the acquired stand maximum output, and calculates the power permitted to be used by the battery temperature control actuator 13 (hereinafter referred to as "battery temperature control use permitted power").

[0014] The thermal management control unit 12 gives an operation instruction to the battery temperature control actuator 13. Specifically, the thermal management control unit 12 operates the battery temperature control actuator 13 within the battery temperature control use permitted power calculated by the charging control unit 11.

[0015] The battery temperature control actuator 13 is for adjusting the temperature of a vehicle battery (not shown). This battery temperature control actuator 13 adjusts the temperature of the battery based on the operation instruction of the thermal management control unit 12.

[0016] The charging stand 2 is provided, for example, at a charging station or the like. This charging stand 2 is equipped with a charging adapter or the like for charging the vehicle.

[0017] Here, the power that can be received by the battery (hereinafter referred to as "battery receivable power") depends on the temperature of the battery. Therefore, in the vehicle, the temperature of the battery is adjusted to improve the battery receivable power.

[0018] However, for example, as shown in FIG. 2, when the power consumption of the battery temperature control actuator exceeds the maximum output of the charging stand, the SOC of the vehicle decreases even during charging. Therefore, in the charging control device according to the embodiment, for example, as shown in FIG. 3, by limiting the power consumption of the battery temperature control actuator 13 to be equal to or less than the maximum output of the charging stand 2, power consumption from the battery is suppressed, and a decrease in SOC during charging is suppressed.

[0019] (Charging control method) The flow of the charging control method executed by the charging control device according to the embodiment will be described with reference to FIG. 4.

[0020] First, the charging control unit 11 starts charging (step S1). Subsequently, the charging control unit 11 acquires the maximum output information of the charging stand 2 from the charging stand 2 that is currently charging (step S2).

[0021] Subsequently, the charging control unit 11 determines the maximum chargeable power in consideration of the acquired maximum output of the charging stand, and calculates the allowable power for battery temperature control use (step S3). Subsequently, the thermal management control unit 12 operates the battery temperature control actuator 13 within the allowable power for battery temperature control use calculated in step S3 (step S4), and this process is completed.

[0022] In step S3, in addition to calculating the allowable power for battery temperature control use based on the maximum output of the charging stand (maximum rated power of the charging stand), the allowable power for battery temperature control use can be calculated, for example, by the following methods (1) to (4).

[0023] (1) Calculate the allowable power for battery temperature control use based on the current output of the charging stand 2. (2) Calculate the allowable power for battery temperature control use based on the current sensor value / voltage sensor value at the battery terminal. (3) Calculate the allowable power for battery temperature control use based on the current sensor value / voltage sensor value at the vehicle inlet terminal. (4) In addition to the above (1) to (3), the power permitted for battery temperature control use is calculated in consideration of the upper limit set value of the charging power that can be set by the user.

[0024] According to the charging control device according to the embodiment described above, during vehicle charging, it is possible to suppress a decrease in SOC due to battery temperature control.

[0025] Further effects and modifications can be easily derived by those skilled in the art. Therefore, a broader aspect of the present invention is not limited to the specific details and representative embodiments shown and described as above. Accordingly, various changes can be made without departing from the spirit or scope of the general inventive concept defined by the appended claims and their equivalents.

Description of Reference Numerals

[0026] 1 Charging control device 11 Charging control unit 12 Thermal management control unit 13 Battery temperature control actuator 2 Charging stand

Claims

【Claim 1】 comprising a control unit, wherein the control unit limits the power consumption of the battery temperature control actuator during vehicle charging to be below the output limit of the charging stand, a charging control device.

Images