JP5874537B2 - Vehicle system - Google Patents

Description

  The present invention relates to a vehicle system including a battery, an air conditioner, and a temperature adjustment unit.

  Conventionally, in a hybrid vehicle, an example of a technology related to a vehicle battery cooling control device for the purpose of cooling a battery without causing deterioration in fuel consumption has been disclosed (see, for example, Patent Document 1). The vehicle battery cooling control apparatus is configured to control the switching valve so that the indoor air is introduced into the cargo compartment in advance and the cargo compartment is cooled when the electrical load is predicted to be increased by the electrical load predicting means. Is provided. Therefore, when an increase in electrical load is assumed, the interior of the trunk room is cooled in advance by the air in the passenger compartment, so that a sufficient time is required until the battery temperature reaches the allowable temperature when the electrical load increases.

Japanese Patent No. 3975990

  However, in a general vehicle including a hybrid vehicle, when the vehicle is continuously stopped (that is, parked) for a predetermined time or longer, an increase in the electric load is not assumed, but rather there is no electric load. Therefore, when stopping the vehicle, the switching valve cannot be switched so as to introduce the indoor air into the cargo compartment in advance, and as a result, the battery installed in the cargo compartment cannot be cooled.

  On the other hand, when the vehicle is stopped, it is often left with the windows and doors closed, and the interior temperature of the vehicle becomes high. Especially in the summer, the influence of solar radiation is strong, and the room temperature tends to rise quickly. Even if the switching valve is switched so that the indoor air is introduced into the cargo room, the heated indoor air is sent to the battery, which may adversely affect the battery. That is, the battery may be heated and the performance may deteriorate.

  The present invention has been made in view of such points, and even if the vehicle is continuously stopped (that is, parked) for a predetermined time or longer, the temperature change of the battery is suppressed, and the performance of the battery is deteriorated. An object of the present invention is to provide a vehicle system that can prevent the above-described problem.

A first invention made to solve the above-described problems is a vehicle system including a battery provided in a vehicle, an air conditioner that adjusts air in a vehicle interior of the vehicle, and a temperature adjustment unit that adjusts the temperature of the battery. A temperature detection unit that detects a temperature of the battery and a temperature in the vehicle interior, and the air conditioner performs air conditioning in the vehicle interior when a predetermined condition is satisfied when the vehicle is stopped, and the temperature adjustment unit (11a, 12, 50, 70, 80) indicates that when the first battery temperature of the battery detected by the temperature detection unit when the vehicle is stopped reaches a charge-corresponding temperature corresponding to a charge state of the battery, The predetermined condition includes a first condition for the battery temperature to reach a predetermined temperature, a second condition for the vehicle interior temperature to reach the first battery temperature, and an outside air temperature detected by the temperature detector. But One or more of the third conditions for reaching the first battery temperature are applied, and the predetermined temperature is either a storage temperature for storing the battery so as not to deteriorate or a temperature corresponding to the charging. It is characterized by being.

According to this configuration, when the vehicle is stopped, the temperature adjustment unit adjusts the temperature of the battery when the first battery temperature detected by the temperature detection unit reaches the charge-corresponding temperature . In other words, adjustments are made to suppress battery temperature changes so that battery performance does not deteriorate. Therefore, the temperature change of a battery can be suppressed and the performance of the battery can be prevented from deteriorating. In addition, when one or more conditions among the first condition, the second condition, and the third condition are satisfied, the first battery temperature is reached, and the temperature adjustment unit adjusts the temperature of the battery. Therefore, the temperature change of a battery can be suppressed and the performance of the battery can be prevented from deteriorating. Furthermore, since the predetermined temperature is the storage temperature or the charge-compatible temperature, it is possible to more reliably prevent the battery performance from deteriorating.

  The “battery” corresponds to, for example, a secondary battery or a fuel cell. “When the vehicle is stopped” means a so-called parking state. The “temperature adjustment unit” is arbitrary as long as the temperature of the battery can be adjusted. For example, a combination of a control device that outputs a control signal for temperature adjustment, a blower (fan, blower, etc.), a heat source (heater, etc.), a heat exchanger (pipe line, heat medium, etc.) and the like is applicable. “Adjustment” of temperature corresponds to cooling only, heating only, and both cooling and heating.

According to a second aspect of the present invention, there is provided a vehicle system including a battery provided in a vehicle, an air conditioner that adjusts air in a vehicle interior of the vehicle, and a temperature adjustment unit that adjusts a temperature of the battery. A temperature detection unit that detects a temperature inside the vehicle, and the air conditioner adjusts air in the vehicle interior when a predetermined condition is satisfied when the vehicle is stopped, and the temperature adjustment unit detects the temperature when the vehicle is stopped. When the vehicle interior temperature detected by the unit reaches the first battery temperature of the battery, the temperature of the battery is adjusted, and the temperature difference between the second battery temperature and the first battery temperature is the outside air temperature. It is a value calculated from either the temperature difference between the temperature and the vehicle interior temperature, or the temperature difference between the set temperature set in the air conditioner and the vehicle interior temperature . According to this structure, the temperature change of a battery can be suppressed and the performance of the battery can be prevented from deteriorating. Moreover, since the temperature difference that can actually be taken is a temperature difference or a calculated value, the temperature of the battery can be adjusted accurately, and deterioration of the battery performance can be more reliably prevented.

  According to a third aspect of the present invention, there is provided a solar power generator (solar cell) that receives sunlight to generate power, and a power distribution unit that distributes the power supplied from the solar power generator to the air conditioner and auxiliary equipment. It is characterized by having. According to this configuration, the power supplied from the solar power generator is distributed by the power distribution unit, and the temperature adjustment unit adjusts the temperature of the battery. Since electric power is obtained from the solar power generator, battery consumption (reduction in the amount of stored electricity) can be suppressed. The “auxiliary machines” corresponds to devices that send outside air or inside air such as ECUs and fans.

It is a schematic diagram which shows the structural example of the vehicle system with which a vehicle is equipped. It is an overhead view which shows the flow of the air conditioning in a vehicle. It is a flowchart which shows the example of a procedure of a temperature adjustment process. It is a time chart which shows a time-dependent change about time and temperature. It is a schematic diagram which shows the operation example at the time of the non-stop of a vehicle system.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Note that unless otherwise specified, “connecting” means electrically connecting. Each figure shows elements necessary for explaining the present invention, and does not necessarily show all actual elements. When referring to directions such as up, down, left and right, the description in the drawings is used as a reference. “Operation” includes the meaning of driving, and “setting” includes the meaning of change and update.

  The vehicle system shown in FIG. 1 includes a power unit 10, relays SMR1 and SMR2, a smoothing capacitor Cb, a power conversion unit 20, a rotating electrical machine 30, a converter 40, an air conditioner 50, a fan 70 included in auxiliary machinery, a solar power generator. 80 and so on. Whether or not the solar power generator 80 is provided in the vehicle is arbitrary. The auxiliary battery 60 is provided as necessary. Hereinafter, each element will be briefly described.

  The power unit 10 has a function of stably supplying power to the power conversion unit 20, the converter 40 connected in parallel with the power conversion unit 20, the air conditioner 50, and the like. The power unit 10 illustrated in FIG. 1 includes a battery Eb, an ECU (Electronic Control Unit) 11, a fan 12, and the like. A secondary battery (for example, a lithium ion battery) is applied to the battery Eb of this embodiment. Arrangement | positioning of the battery Eb in a vehicle is arbitrary, For example, a trunk room, a vehicle interior (specifically, a center armrest part, an under floor etc.), etc. correspond.

  ECU11 has temperature control part 11a, electric power distribution part 11b, etc., and outputs control signal Sc for temperature adjustment of battery Eb. The ECU 11 may be composed of one ECU (control device) or a plurality of ECUs. The configuration of each ECU is arbitrary, and may be a hardware configuration such as a gate circuit or a software configuration in which a CPU executes a program. In the case of a plurality of ECUs, the network topology between the ECUs is also arbitrary.

  The temperature control unit 11a has a function of controlling (that is, adjusting) the battery temperature θb of the battery Eb to a target temperature (see FIG. 3 described later). The power distribution unit 11b is provided as necessary, and has a function of distributing the power supplied from the power supply source to the air conditioner 50 and the fan 70 (temperature adjustment unit). The power supply source corresponds to one or more of the battery Eb, the auxiliary battery 60, and the solar power generator 80. A combination of one or more of the fans 12, 70 and the air conditioner 50 and the temperature control unit 11a corresponds to a “temperature adjustment unit”. The fan 12 as a blower blows air from the passenger compartment toward the battery Eb. The fans 12, 70, the air conditioner 50, and the like are operated / not operated based on the control signal Sc.

  Relays SMR1 and SMR2 and smoothing capacitor Cb are provided between battery Eb and power conversion unit 20. The operations of relays SMR1 and SMR2 are controlled by ECU 11. The ECU 11 controls the operation (ON / OFF) of the relays SMR1 and SMR2 in conjunction with a predetermined switch (for example, an ignition switch or a keyless system switch) of the vehicle. FIG. 1 shows an off state, and FIG. 5 shows an on state. Smoothing capacitor Cb has a function of reducing potential fluctuation of voltage value VH accompanying power fluctuation of rotating electrical machine 30.

  The power converter 20 has a function of converting the power supplied from the battery Eb and outputting (transmitting) it to the rotating electrical machine 30. When a counter electromotive force is generated in the rotating electrical machine 30, a function of charging (charging) the battery Eb may be provided. The configuration of the power conversion unit 20 is arbitrary. For example, if the rotating electrical machine 30 is a three-phase (U phase, V phase, W phase), six switching elements and diodes are provided in combination with the upper arm and the lower arm. A motor generator (indicated by “MG” in the figure) having the functions of an electric motor and a generator is applied to the rotating electrical machine 30 of this embodiment.

  The converter 40 converts the voltage value VH applied to the counter electromotive force of the battery Eb and the rotating electrical machine 30 to a target voltage value VF (for example, 14 [V]) and outputs the voltage value VH. The voltage value VF corresponds to a voltage value for operating a device (for example, the fan 70) used for air conditioning, ventilation, temperature adjustment, or the like.

  The air conditioner 50 is a so-called air conditioner, and has a function of introducing outside air or inside air to adjust to a target temperature set by a passenger or the like. Normally, the air conditioner 50 operates by receiving power supplied from the battery Eb. When surplus power is generated in the auxiliary battery 60 or the solar power generator 80, the power supplied through the power distribution unit 11b may be received and operated. The auxiliary battery 60 and the solar power generator 80 are power sources mainly for operating the fan 70 (auxiliary equipment). The fan 70 sends outside air or inside air into the vehicle interior. If the air conditioner 50 is operating, the fan 70 sends outside air or inside air that has been air-conditioned. Therefore, the fan 70 corresponds to an “air conditioner” in that air conditioning in the passenger compartment can be performed.

  The auxiliary battery 60 is a battery (for example, a secondary battery or a fuel cell) provided in the vehicle separately from the battery Eb described above. When relays SMR1 and SMR2 are on, the power applied to the back electromotive force of battery Eb and rotating electrical machine 30 is supplied via converter 40. Therefore, if auxiliary battery 60 is a secondary battery, it can also store electricity. The solar power generator 80 is a device that directly converts the energy of light into electric power and outputs it. It is what is called a solar cell, Comprising: The kind classified according to the material of an optical absorption layer, the form of an element, etc. does not ask | require.

  In FIG. 2, the example of arrangement | positioning of the temperature sensor, apparatus, etc. in the vehicle 100 is shown. The temperature sensor Se is provided on the front side (left side of the drawing) of the vehicle 100 in order to detect the outside air temperature (θe). The temperature sensor Si is provided in the vehicle interior in order to detect the vehicle interior temperature (θi). The temperature sensor Sb is provided inside and outside the battery Eb to detect the battery temperature (θb). Signals (including data) detected by these temperature sensors Se, Si, Sb are input to the ECU 11 (see FIG. 1). The fan 12 is provided at a position where air in the vehicle compartment can be sent to the battery Eb (for example, in the duct or in the vicinity of the battery Eb). The solar power generator 80 is provided at a position for receiving light (for example, a vehicle body such as a roof, a pillar, and a bonnet). These arrangement examples are merely examples, and other arrangements may be used. The outside air is sent to the vehicle interior through the air conditioner 50 and the fan 70 as indicated by an arrow D5. The air in the passenger compartment is applied to the battery Eb through the fan 12 as indicated by an arrow D6, thereby adjusting the temperature of the battery Eb.

  A temperature adjustment process for adjusting the temperature of the battery Eb by the temperature control unit 11a provided in the power unit 10 will be described with reference to FIG. This temperature adjustment process is repeatedly executed while the ECU 11 is in operation. The execution may be at regular intervals or irregular intervals.

  In the temperature adjustment process, it is first determined whether or not the vehicle 100 is stopped (parked) [step S10]. A determination condition for determining whether or not the vehicle 100 is stopped can be arbitrarily set. For example, the determination may be made based on whether the above-described predetermined switch is off, or whether the state in which the speed detected by a speed sensor (not shown) provided in the vehicle 100 is zero exceeds a predetermined period. May be. The predetermined period corresponds to a stop determination period Ts described later (see FIG. 4), and corresponds to, for example, 1 minute, 20 minutes, 1 hour, or the like. If the vehicle 100 is not stopped (NO), the temperature adjustment process is returned (including the end. The same applies hereinafter).

  On the other hand, if the vehicle 100 is stopped (YES), it is determined whether or not the battery temperature θb detected by the temperature sensor Sb reaches a predetermined temperature θA (whether θb> θA) [step S11]. That is, it is determined whether or not the “first condition” is satisfied. In addition, the “second condition” in which the vehicle interior temperature θi reaches the first battery temperature θb1 or the “third condition” in which the outside air temperature θe detected by the temperature detection unit reaches the first battery temperature θb1 is applied. Good. Furthermore, two or more conditions may be imposed among the first condition, the second condition, and the third condition.

  As the battery temperature θb, the temperature detected by the temperature sensor Sb (that is, the first battery temperature θb1) may be applied, and the second battery temperature θb2 that is higher than the first battery temperature θb1 by the temperature difference α is applied. May be. A calculated value calculated from an arbitrary temperature difference may be applied to the temperature difference α (= θb2−θb1) between the first battery temperature θb1 and the second battery temperature θb2. For example, a calculated value calculated from any one of a temperature difference between the outside air temperature θe and the vehicle interior temperature θi, a temperature difference between a set temperature set in the air conditioner 50 and the vehicle interior temperature θi, and the like. The calculation method is appropriately set according to various conditions such as the vehicle 100 and the battery Eb. The predetermined temperature θA can be arbitrarily set. For example, the storage temperature for storing the battery Eb so as not to deteriorate, the charging-compatible temperature corresponding to the state of charge of the battery Eb (for example, the charging rate, the charge amount, etc.) are applicable. The relationship between the charge state and the charge-corresponding temperature is set by a map, a function, or the like on the assumption that the battery Eb does not deteriorate.

  If the battery temperature θb does not reach the predetermined temperature θA (that is, θb ≦ θA; NO), the battery Eb is a temperature suitable for storage without deterioration. Therefore, since there is no need to adjust the temperature of the battery Eb, the temperature adjustment process is returned as it is.

  On the other hand, when the battery temperature θb reaches the predetermined temperature θA (YES), it is determined whether or not the battery temperature θb reaches the vehicle interior temperature θi (that is, whether θb> θi) [step S12]. The vehicle interior temperature θi is detected by a temperature sensor Si (see FIG. 1). If the battery temperature θb reaches the vehicle interior temperature θi (YES), the fan 12 is operated to adjust the temperature by applying air in the vehicle interior to the battery Eb [step S13]. It is preferable that the change in the battery temperature θb is increased by changing the rotational speed of the fan 12 in accordance with the temperature difference between the battery temperature θb and the vehicle interior temperature θi so as to increase or decrease the air flow rate.

  The temperature adjustment of the battery Eb in step S13 is performed until the battery temperature θb reaches the allowable temperature θB (θb> θB; NO in step S14). The allowable temperature θB in step S14 is a temperature range suitable for storing the battery Eb. On the other hand, when the battery temperature θb reaches the allowable temperature θB (θb ≦ θB; YES in step S14), the battery Eb is a temperature suitable for storage without being deteriorated, and the temperature adjustment process is returned.

  Next, in step S12, a description will be given below of the period during which the battery temperature θb does not reach the vehicle interior temperature θi (θb ≦ θi; NO). During this time, the process branches to step S30 or step S21 depending on the magnitude relationship between the outside air temperature θe detected by the temperature sensor Se and the vehicle interior temperature θi [step S20].

  If the outside air temperature θe is lower than the vehicle interior temperature θi (θe <θi; YES), only the fan 70 is operated to send the outside air into the vehicle interior [step S30], and the process returns to step S12 and continues. It is preferable that the change in the vehicle interior temperature θi is increased by changing the rotational speed of the fan 70 according to the temperature difference between the outside air temperature θe and the vehicle interior temperature θi so as to adjust the air flow rate.

  On the other hand, if the outside air temperature θe is equal to or higher than the vehicle interior temperature θi (θe ≧ θi; NO), the air conditioner 50 and the fan 70 are operated to adjust the air in the vehicle interior [step S30], and the process returns to step S12 and continues. To do. The air conditioning in step S30 corresponds to, for example, the outside air mode and the operation of the fan 70, the operation of the compressor (air conditioner 50) and the fan 70 in the case of cooling. The operation mode of the air conditioner 50 may be continuous operation or intermittent operation. In the case of intermittent operation, it may be at regular intervals or irregular intervals, and the temporary operation time may be regular intervals or irregular intervals. Based on the magnitude of power supplied to the air conditioner 50 (each power of the battery Eb, auxiliary battery 60, solar power generator 80, etc.), the temperature difference between the outside air temperature θe and the vehicle interior temperature θi, etc. May be changed.

  In executing steps S30 and S21 described above, the power distribution unit 11b changes the distribution ratio for distributing power to the air conditioner 50 and the fan 70 (temperature adjustment unit). The distribution ratio is arbitrarily set within a range of 0 to 100%. For example, when based on the vehicle interior temperature θi and the first battery temperature θb1, a temperature difference (| θi−θb1 |), a calculated value calculated from the temperature difference, or the like is applied. In FIG. 1, power supply paths are indicated by arrows D1 and D2. An arrow D1 indicated by a two-dot chain line is a case where the power source is the auxiliary battery 60, and an arrow D1 indicated by a thick solid line is a case where the power source is the solar power generator 80.

  An example of temperature change by the above-described temperature adjustment processing will be described with reference to FIG. In FIG. 4, the vertical axis is temperature, the horizontal axis is time, and the time t0 is the time when a predetermined switch of the vehicle is turned off. A change in the vehicle interior temperature θi is indicated by a characteristic line Li (broken line), a change in the battery temperature θb is indicated by characteristic lines Lb1 and Lb2 (solid line), and a change in the outside air temperature θe is indicated by a characteristic line Le (one-dot chain line). The characteristic line Lb1 is an example in which the first battery temperature θb1 is applied to the battery temperature θb, and the characteristic line Lb2 is an example in which the second battery temperature θb2 is applied to the battery temperature θb. Actually, the outside air temperature θe also changes. However, in order to simplify the explanation, the outside air temperature θe is set to a constant temperature (θ1).

  First, an example in which the first battery temperature θb1 is applied to the battery temperature θb will be described. At time t0, the first battery temperature θb1 is the temperature θ2, and the vehicle interior temperature θi is the temperature θ4. Since it cannot be determined whether or not the vehicle has stopped at time t0 when the predetermined switch is turned off, nothing is performed until time t1 when the stop determination period Ts elapses (NO in step S10 of FIG. 3).

  After the stop determination period Ts has elapsed, the first battery temperature θb1 reaches the predetermined temperature θA at time t3. At this time, since the first battery temperature θb1 is lower than the vehicle interior temperature θi and the vehicle interior temperature θi is higher than the outside air temperature θe, the fan 70 is operated and the outside air is sent into the vehicle interior (steps S12 and S20 in FIG. 3). , S21). Thereafter, at time t5 when the first battery temperature θb1 becomes higher than the vehicle interior temperature θi, the fan 12 is operated and the temperature of the battery Eb is adjusted (steps S11, S12, and S13 in FIG. 3). Then, at time t6 when the first battery temperature θb1 reaches the allowable temperature θB, the operation of the fan 12 is stopped (steps S14 and S15 in FIG. 3).

  Next, an example in which the second battery temperature θb2 is applied to the battery temperature θb will be described with respect to differences from the example in which the first battery temperature θb1 is applied to the battery temperature θb. Since the second battery temperature θb2 is higher than the first battery temperature θb1 by the temperature difference α, the second battery temperature θb2 reaches the predetermined temperature θA at time t2 before time t3, and the fan 70 is turned on at time t2. It is operated and the outside air is sent into the passenger compartment (steps S12, S20, S21 in FIG. 3). Thereafter, the second battery temperature θb2 becomes lower than the vehicle interior temperature θi at time t4 before time t5, and the fan 12 is operated to adjust the temperature of the battery Eb (step S11 in FIG. 3). S12, S13). The second battery temperature θb2 reaches the allowable temperature θB at time t7 after time t6, and the operation of the fan 12 is stopped (steps S14 and S15 in FIG. 3).

  In FIG. 1, the structural example of the vehicle system at the time of the stop of the vehicle 100 was shown. On the other hand, FIG. 5 shows a configuration example of the vehicle system when the vehicle 100 is not stopped (when the predetermined switch is on). In FIG. 5, the relays SMR 1 and SMR 2 are turned on, the electric power of the battery Eb is converted by the power conversion unit 20 and output to the rotating electrical machine 30, and the counter electromotive force generated in the rotating electrical machine 30 passes through the power conversion unit 20. The battery Eb is charged (arrow D3). Moreover, the electric power of the battery Eb is output to the fan 70 via the converter 40 (arrow D4), and is directly output to the air conditioner 50 (arrow D5). Although not shown, when electric power is obtained by the auxiliary battery 60 or the solar power generator 80, it may be distributed by the power distribution unit 11b as in FIG. Since it is not necessary from the battery Eb for the amount of electric power to be distributed, consumption (decrease in the amount of stored electricity) can be suppressed.

  According to the embodiment described above, the following effects can be obtained.

  (1) The vehicle system includes a temperature detection unit (temperature sensor Sb, temperature sensor Si) that detects the temperature of the battery Eb (battery temperature θb) and the temperature in the vehicle interior (vehicle interior temperature θi), and the air conditioner 50 When the vehicle 100 is stopped, the vehicle interior air is adjusted when a predetermined condition is satisfied, and the temperature adjustment unit (battery Eb, temperature control unit 11a, fans 12, 70, air conditioner 50, solar power generator 80) When the vehicle interior temperature θi detected by the temperature detector when the vehicle stops is reached the first battery temperature θb1 of the battery Eb, the battery temperature θb of the battery Eb is adjusted (see FIGS. 1 and 3). . According to this configuration, adjustment is performed so as to suppress the temperature change of the battery Eb so that the performance of the battery does not deteriorate. Since the fan 12 for the battery Eb is driven after the ambient temperature (the vehicle interior temperature θi) falls below the battery temperature θb, the battery Eb is not sent to the battery Eb for battery cooling while the vehicle is stopped. Will not be adversely affected. Therefore, the temperature change of the battery Eb can be suppressed and the performance of the battery Eb can be prevented from deteriorating.

  (2) The predetermined condition is a first condition in which the battery temperature θb (the first battery temperature θb1 or the second battery temperature θb2) of the battery Eb reaches the predetermined temperature θA, and the second condition in which the vehicle interior temperature θi reaches the first battery temperature θb1. One or more conditions are applied among the conditions and the third condition in which the outside air temperature θe detected by the temperature detector reaches the first battery temperature θb1. According to this configuration, it is possible to suppress the temperature change of the battery Eb and prevent the performance of the battery Eb from deteriorating.

  (3) The predetermined temperature θA is either a storage temperature for storing the battery Eb so as not to deteriorate or a charge-corresponding temperature corresponding to the charged state of the battery Eb. According to this configuration, the predetermined temperature θA is a temperature that can be stored so as not to deteriorate regardless of whether it is a storage temperature or a temperature corresponding to charging, so that the performance of the battery Eb can be more reliably prevented from being deteriorated.

  (4) The temperature adjustment unit adjusts the battery temperature θb of the battery Eb when the vehicle interior temperature θi detected by the temperature detection unit reaches the second battery temperature θb2 set higher than the first battery temperature θb1. (See FIGS. 3 and 4). According to this configuration, the second battery temperature θb2 is higher than the first battery temperature θb1, and therefore easily reaches the vehicle interior temperature θi. Therefore, since the temperature of the battery Eb can be adjusted early, it is possible to more reliably prevent the performance of the battery Eb from deteriorating.

  (5) The temperature difference α (= θb2−θb1) between the second battery temperature θb2 and the first battery temperature θb1 is a temperature difference between the outside air temperature θe and the vehicle interior temperature θi, or is set in the air conditioner 50. It was set as the structure which is the calculated value (value) computed from either of the temperature difference of temperature and vehicle interior temperature (theta) i (refer FIG. 3, FIG. 4). According to this configuration, since the temperature difference that can actually be taken is the temperature difference α or the calculated value, the temperature of the battery Eb can be adjusted accurately, and the performance of the battery Eb can be prevented more reliably. .

  (6) The solar power generator 80 that receives sunlight to generate power, and the power distribution unit 11b that distributes the power supplied from the solar power generator 80 to the air conditioner 50 and the fan 70 (auxiliaries). It was set as the structure (refer FIG. 1). According to this configuration, since electric power for operating the auxiliary machines can be obtained from the solar power generator 80, consumption of the battery Eb (reduction in the amount of stored electricity) can be suppressed.

  (7) The power distribution unit 11b is configured to change the distribution ratio distributed to the air conditioner 50 and the fan 70 (temperature adjustment unit) based on the vehicle interior temperature θi and the first battery temperature θb1 (FIG. 1). , See FIG. According to this configuration, since the electric power required for operation differs between the air conditioner 50 and the fan 70, the supplied electric power can be effectively distributed.

  (8) If the outside air temperature θe is higher than the vehicle interior temperature θi, the air conditioner 50 adjusts the air without introducing the outside air into the vehicle interior, and the temperature adjustment unit causes the first battery temperature θb1 to reach the vehicle interior temperature θi. Then, it was set as the structure which adjusts battery temperature (theta) b of the battery Eb (refer step S20, S21, S30 of FIG. 3). According to this configuration, it is possible to more reliably prevent the performance of the battery Eb from deteriorating while suppressing an increase in the vehicle interior temperature θi.

[Other Embodiments]
Although the form for implementing this invention was demonstrated above, this invention is not limited to the said form at all. In other words, various forms can be implemented without departing from the scope of the present invention. For example, the following forms may be realized.

  In the above-described embodiment, when the vehicle 100 is stopped, the air conditioner 50 and the fan 70 (auxiliaries) are operated by receiving power supplied from the auxiliary battery 60 and the solar power generator 80 ( (See FIG. 1). Instead of (or in combination with) this mode, the vehicle 100 is provided with a charger, and when the vehicle 100 is stopped, the vehicle 100 is supplied with electric power supplied from an external power source (for example, a commercial power source or a generator) and air-conditioned. The apparatus 50 and the fan 70 (auxiliary machines) may be operated. According to this configuration, consumption of the battery Eb (decrease in the amount of stored electricity) can be suppressed. Further, the battery Eb and the auxiliary battery 60 can be charged by the charger.

  In the above-described embodiment, the operation of the air conditioner 50 and the fan 70 (auxiliary equipment) is determined according to the magnitude relationship between the outside air temperature θe and the vehicle interior temperature θi (steps S20 and S21 in FIG. 3). , S30). Instead of (or in combination with) this form, the vehicle 100 is provided with a solar radiation sensor, and the operation of the air conditioner 50 and the fan 70 (auxiliary equipment) is determined according to the amount of solar radiation detected by the solar radiation sensor. Also good. If the amount of solar radiation is large when the vehicle 100 is stopped, the vehicle interior temperature θi often increases rapidly, so that the change in the vehicle interior temperature θi can be suppressed. In the case where the vehicle 100 includes the solar power generator 80, the relationship between the power generated by the solar power generator 80 and the amount of solar radiation is set by a map or a function, and the solar power generator 80 generates power. The solar radiation amount may be obtained based on the electric power.

  In the above-described embodiment, the temperature of the battery Eb is adjusted based on the temperature detected by the temperature detection unit (temperature sensor Sb, temperature sensor Si, temperature sensor Se), or the air conditioner 50 or the fan 70 is operated. The vehicle interior temperature θi is changed (see FIGS. 1 and 3). Instead of (or in combination with) this form, the vehicle 100 is provided with a humidity sensor, and the temperature of the battery Eb is adjusted based on the humidity detected by the humidity sensor, and the air conditioner 50 and the fan 70 are operated. Alternatively, the vehicle interior temperature θi may be changed. Even when the temperature is the same, there is a difference in the temperature that is felt according to the level of humidity. For example, when adjusting the temperature by sending high-humidity air to the battery Eb, the metal part of the battery Eb is easily corroded. Considering these, it is preferable to operate the air conditioner 50 in the dehumidifying mode when the humidity reaches a predetermined humidity value. According to this configuration, the vehicle interior can be dried even under the same temperature, and corrosion of the metal portion can be suppressed.

  In the above-described embodiment, the power generated by the solar power generator 80 is configured to be used for the operation of the air conditioner 50 and the fan 70 (auxiliaries) via the power distribution unit 11b (see FIG. 1). . It replaces with this form, and is equipped with the charger connected to the solar power generator 80 or the electric power distribution part 11b, and when surplus electric power arises, it is the structure which charges the battery Eb and the auxiliary battery 60 with a charger. Also good. The surplus power is generated, for example, when the air conditioner 50 and the fan 70 are not operated, or when the power is surplus even when the air conditioner 50 is operated. According to this configuration, the battery Eb and the auxiliary battery 60 can be charged without requiring an external power source.

  In embodiment mentioned above, the solar power generator 80 which uses solar energy was applied as a generator using renewable energy (natural energy) (refer FIG. 1). Instead of (or in combination with) this form, a generator using other renewable energy (for example, a wind generator using wind power) may be applied. Since it is the same as the solar power generator 80 in that power can be generated even when the vehicle 100 is stopped, the same effects as those of the above-described embodiment can be obtained.

  The above-described embodiment is applied when the battery temperature θb of the battery Eb rises after the vehicle 100 is stopped (see FIGS. 1 and 4). In place of this form (or in combination), when the outside temperature θe is low in the cold season in the cold region, the battery temperature θb does not rise so much, and conversely, when the temperature falls greatly due to the influence of the outside temperature θe. You may apply. In this case, the air conditioner 50 is operated in the heating mode to increase the passenger compartment temperature θi, or the heater provided between the passenger compartment and the fan 12 is operated. Thereby, if the fan 12 is operated, the battery Eb can be heated and kept at a storage temperature for storage so that the battery Eb does not deteriorate.

  In the above-described embodiment, the ECU 11 is applied as a control device that outputs the control signal Sc, the relays SMR1 and SMR2 are applied as switches, and a secondary battery such as a lithium ion battery is applied as the battery Eb (see FIG. 1). ). Instead of this form, another control device (for example, a computer or a one-chip microcomputer) configured to be able to output the control signal Sc may be applied, or another switch (for example, a switch) may be applied. Other secondary batteries (for example, lead storage batteries, lithium ion polymer secondary batteries, nickel / hydrogen storage batteries, nickel / cadmium storage batteries, nickel / iron storage batteries, nickel / zinc storage batteries, silver oxide / zinc storage batteries) and fuels A battery may be applied. Even when other control devices, other switches, and other batteries are applied, the same effects as those of the above-described embodiment can be obtained.

  In the embodiment described above, the power of the smoothing capacitor Cb stored when the vehicle 100 is stopped is not used (see FIG. 1). Instead of this form, the power of the smoothing capacitor Cb may be used for the operation of the air conditioner 50 and the fan 70 (auxiliaries). Effective use of electric power can be achieved, and consumption of the battery Eb can be suppressed.

11a Temperature controller 50 Air conditioner 100 Vehicle θb Battery temperature θb1 First battery temperature θi Car interior temperature Eb Battery Sb, Si Temperature sensor (temperature detector)

Claims (8)

In a vehicle system comprising: a battery provided in a vehicle; an air conditioner that adjusts air in a vehicle interior of the vehicle; and a temperature adjustment unit that adjusts a temperature of the battery.
A temperature detection unit (Sb, Si) for detecting the temperature of the battery and the temperature of the vehicle interior;
When the air conditioner (50, 70) satisfies a predetermined condition when the vehicle is stopped, the air conditioner adjusts the air in the vehicle interior,
The temperature adjusting unit (11a, 12, 50, 70, 80) is configured such that the first battery temperature of the battery detected by the temperature detecting unit when the vehicle is stopped is a charge-corresponding temperature corresponding to a charged state of the battery. When it reaches, adjust the temperature of the battery ,
The predetermined condition includes a first condition in which the temperature of the battery reaches a predetermined temperature, a second condition in which the vehicle interior temperature reaches the first battery temperature, and an outside air temperature detected by the temperature detection unit is the first battery temperature. Apply one or more of the third conditions that reach
The vehicle system according to claim 1, wherein the predetermined temperature is either a storage temperature for storing the battery so as not to deteriorate or a temperature corresponding to the charging . The said temperature adjustment part adjusts the temperature of the said battery, when the said vehicle interior temperature detected by the said temperature detection part reaches the 2nd battery temperature set higher than a said 1st battery temperature. Item 4. The vehicle system according to Item 1 . The temperature difference (α) between the second battery temperature and the first battery temperature is a temperature difference between the outside air temperature and the vehicle interior temperature, or a set temperature set in the air conditioner and the vehicle interior temperature. The vehicle system according to claim 2 , wherein the vehicle system is a value calculated from any one of the temperature differences. In a vehicle system comprising: a battery provided in a vehicle; an air conditioner that adjusts air in a vehicle interior of the vehicle; and a temperature adjustment unit that adjusts a temperature of the battery.
A temperature detection unit (Sb, Si) for detecting the temperature of the battery and the temperature of the vehicle interior;
When the air conditioner (50, 70) satisfies a predetermined condition when the vehicle is stopped, the air conditioner adjusts the air in the vehicle interior,
The temperature adjustment unit (11a, 12, 50, 70, 80) is configured such that when the vehicle interior temperature detected by the temperature detection unit when the vehicle is stopped reaches the first battery temperature of the battery. And adjusting the temperature of the battery when the vehicle interior temperature reaches a second battery temperature set higher than the first battery temperature,
The temperature difference (α) between the second battery temperature and the first battery temperature is a temperature difference between the outside air temperature and the vehicle interior temperature, or a set temperature set in the air conditioner and the vehicle interior temperature. A vehicle system that is a value calculated from any one of the temperature differences . The predetermined condition includes a first condition in which the temperature of the battery reaches a predetermined temperature, a second condition in which the vehicle interior temperature reaches the first battery temperature, and an outside air temperature detected by the temperature detection unit is the first battery temperature. 5. The vehicle system according to claim 4 , wherein one or more conditions among the third conditions reaching the above are applied. A solar power generator (80) that receives sunlight to generate power;
A power distribution unit (11b) that distributes the power supplied from the solar power generator to the air conditioner and the auxiliary devices;
The vehicle system according to claim 1, comprising:   The vehicle according to claim 6, wherein the power distribution unit changes a distribution ratio distributed to the air conditioner and the temperature adjustment unit based on the vehicle interior temperature and the first battery temperature. system. If the outside air temperature is higher than the vehicle interior temperature, the air conditioner adjusts the air without introducing outside air into the vehicle interior,
The vehicle system according to any one of claims 1 to 7, wherein the temperature adjustment unit adjusts the temperature of the battery when the first battery temperature reaches the vehicle interior temperature.

Images