JP2014212698A - Power supply controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a vehicle to travel using two types of power supplies while satisfying different characteristics appropriately even if the different characteristics are required for the vehicle having the two types of power supplies.SOLUTION: A power supply controller (40) is a power supply controller controlling a vehicle (1) traveling using a power supply system (30) that includes both a first power supply (31) receiving and outputting first electric power; and a second power supply (32) receiving and outputting second electric power, having a smaller capacity than that of the first power supply, and having greater power output than that of the first power supply. The power supply controller (40) comprises: selection means (40) selecting a desired travel mode according to characteristics required for the vehicle (1) from among a plurality of travel modes having different sharing ratios of the first electric power in response to required electric power for the power supply system (30); and control means (40) controlling the first power supply (31) and the second power supply (32) so as to input/output the first electric power at a sharing rate corresponding to the desired travel mode.

Description

  The present invention relates to a technical field of a power supply control device for controlling a vehicle traveling using a power supply system including, for example, two types of power supplies.

  A vehicle (for example, an electric vehicle or a hybrid vehicle) provided with a power supply system including two types of power supplies has been proposed (see Patent Documents 1 and 2). As the two types of power sources, for example, a power source capable of discharging (that is, outputting) a constant power over a long time and a power source capable of rapid charging / discharging (that is, input / output) are used.

  Here, Patent Document 1 discloses a control method in which the battery outputs all of the requested discharge output when the requested discharge output required for the power supply device is equal to or less than the maximum output of the battery during powering. . Further, in Patent Document 1, when the required discharge output required for the power supply device exceeds the maximum output of the battery, the capacitor outputs the portion of the required discharge output that exceeds the maximum output of the battery (or discharge). A control method is disclosed in which a capacitor outputs all the required outputs. By such a control method, since rapid discharge from the battery is prevented, deterioration of the battery is suppressed.

  Patent Document 2 discloses a control method that increases the share of charging to a large-capacity capacitor by restricting charging to a battery during braking (regeneration). Such a control method prevents rapid charging of the battery, so that deterioration of the battery is suppressed.

JP 7-245808 A JP-A-5-30608

  However, the control methods disclosed in Patent Documents 1 and 2 charge the capacitor only when rapid charging or discharging from the battery can occur from the standpoint of preventing battery deterioration. In addition, the capacitor is discharged. For this reason, the control methods disclosed in Patent Documents 1 and 2 have a technical problem that the battery and the capacitor cannot be properly used according to the characteristics required of the vehicle. For example, in the control methods disclosed in Patent Documents 1 and 2, there is a risk that the traveling performance, fuel consumption, etc. of the vehicle may be sacrificed because of persistence in preventing battery deterioration. Alternatively, in the control methods disclosed in Patent Documents 1 and 2, there is a risk that the characteristics required of the vehicle are sacrificed (that is, the originally intended characteristics cannot be obtained) as well as the running performance and fuel consumption of the vehicle. is there.

  Examples of problems to be solved by the present invention include the above. In the present invention, even when different characteristics are required for a vehicle having two types of power supplies, it is possible to drive the vehicle using two types of power supplies while satisfying the different characteristics flexibly. It is an object to provide a power supply control device.

(First power supply control device)
<1>
A first power supply control apparatus for solving the above problems includes a first power supply for inputting / outputting first power and an input / output for second power and having a capacity smaller than that of the first power supply, but having an output. A power supply control apparatus for controlling a vehicle that travels using a power supply system including both a large second power supply, and a plurality of travel modes in which a share ratio of the first power to a required power required for the power supply system is different From the selection means for selecting a desired driving mode according to the characteristics required for the vehicle, and input / output of the first electric power and the second electric power according to a sharing ratio corresponding to the desired driving mode Control means for controlling the first power source and the second power source.

  The first power supply control device can control a vehicle that travels using a power supply system that includes both a first power supply and a second power supply.

  A vehicle traveling using such a power supply system typically travels using electric power output from the power supply system during powering. Specifically, for example, the vehicle travels using the power of a rotating electrical machine that is driven by electric power output from a power supply system. As a result, when the vehicle is powering, one or both of the first power source and the second power source often outputs power (that is, discharges). On the other hand, at the time of regeneration, the vehicle travels while inputting electric power to the power supply system. Specifically, for example, the vehicle travels while inputting electric power generated by regenerative power generation of the rotating electrical machine to the power supply system. As a result, when the vehicle is regenerating, power is often input (that is, charged) to one or both of the first power source and the second power source.

  Here, the first power supply performs input / output (that is, charge / discharge) of the first power. In particular, the first power source is a power source having a larger capacity than the second power source (so-called high capacity type power source). Therefore, the first power source can output a constant power for a longer time than the second power source. On the other hand, the second power source performs input / output (that is, charge / discharge) of the second power. In particular, the second power source is a power source having a larger output than the first power source (a so-called high power type power source). Therefore, the second power supply can input / output power more rapidly (steeply) than the first power supply.

  For example, a battery may be used as the first power source, and a capacitor (in other words, a capacitor) may be used as the second power source. Alternatively, for example, a high-capacity battery (that is, a battery having a larger capacity than the high-power battery) is used as the first power supply, and a high-power battery (that is, a higher output than the high-capacity battery) is used as the second power supply. Battery) may be used. Alternatively, for example, a high-capacitance capacitor (that is, a capacitor having a larger capacity than the high-power capacitor) is used as the first power source, and a high-power capacitor (that is, a higher-capacity capacitor than the high-capacitance capacitor) is used as the second power source. Capacitor) may be used.

  In order to control such a vehicle (in other words, a power supply system provided in such a vehicle), the first power supply control device includes a selection unit and a control unit.

  The selection means selects a desired travel mode from a plurality of travel modes. The plurality of travel modes are distinguished from each other according to a share ratio of the first power with respect to the required power (that is, a ratio that the first power input / output by the first power source occupies or bears in the required power). For example, in the plurality of travel modes, the first power sharing ratio is in the first range, or the first power sharing ratio is in the second range (however, at least part of the second range is , Different from the first range) may include a travel mode and the like. Or, for example, in a plurality of driving modes, the driving mode in which the sharing ratio of the first power is the first value, or the sharing ratio of the first power is the second value (however, the second value is It may include a driving mode and the like (different from the value of 1).

  The required power is power required for the power supply system. That is, when the vehicle is powering, the required power corresponds to the power that the power supply system should output in order for the vehicle to power. Alternatively, when the vehicle is regenerating, the required power corresponds to the power to be input to the power supply system (that is, the power to be input to the power supply system among the power generated by the regeneration).

  In particular, the selection means selects a desired travel mode according to characteristics required for the vehicle. For example, the selection unit may select a desired travel mode associated with a sharing ratio of the first power suitable (or optimal) for characteristics required for the vehicle. Alternatively, for example, the selection unit may select a desired travel mode associated with a share of the first power that can realize the characteristics required for the vehicle.

  More specifically, for example, when the characteristic required for the vehicle is a characteristic in which the driving performance is more important than the fuel efficiency, the first power suitable for the characteristic in which the driving performance is emphasized. A desired travel mode associated with the sharing ratio may be selected. Alternatively, when the characteristic required of the vehicle is a characteristic that emphasizes the fuel consumption performance rather than the driving performance, the selection unit associates the sharing ratio of the first electric power suitable for the characteristic that emphasizes the fuel consumption performance. The desired running mode may be selected. Alternatively, when the characteristic required for the vehicle is another characteristic, the selection unit may select a desired travel mode associated with the share of the first power suitable for the other characteristic. Good.

  In this way, the selection means can appropriately select a desired travel mode whenever the characteristics required of the vehicle change according to the travel of the vehicle. That is, the selection means can appropriately change the share of the first power according to the characteristics required of the vehicle by appropriately selecting the desired travel mode.

  If the share of the first power is determined, the share of the second power is also substantially determined. For example, when the power supply system does not include any other power supply other than the first power supply and the second power supply, the share ratio [%] of the second power is 100—the share ratio [%] of the first power. Alternatively, for example, when the power supply system further includes a power supply other than the first power supply and the second power supply, the second power sharing ratio [%] is 100-the first power sharing ratio-other The share of power input / output by the power supply is [%].

  The control means controls the first power supply so as to input / output the first power according to the sharing ratio corresponding to the desired travel mode selected by the selection means. Similarly, the control unit controls the second power source so as to input / output the second power according to the sharing ratio corresponding to the desired travel mode selected by the selection unit. As a result, the first power supply inputs and outputs the first power that directly satisfies the sharing ratio corresponding to the desired travel mode. The second power source inputs and outputs second power that indirectly satisfies the sharing ratio corresponding to the desired travel mode. Therefore, the first power source and the second power source are selectively used according to the sharing ratio determined based on the selection of the travel mode by the selection means.

  The control means may adjust (or determine) the share of the first power based on the desired travel mode selected by the selection means. For example, when the desired travel mode is associated with a share of a certain range, the control unit may adjust the share of the first power within a range corresponding to the desired travel mode. Specifically, for example, when the share of the first electric power associated with the one driving mode selected by the selection unit is within the first range, the control unit is within the first range. You may adjust the share of 1 electric power.

  At this time, the control means may adjust the share of the first power according to the characteristics required of the vehicle. In other words, the control means is configured so that the first electric power is set to an appropriate (or optimal) sharing ratio that can satisfy the characteristics required for the vehicle within the range corresponding to the one driving mode selected by the selection means. You may adjust a share ratio. More specifically, for example, the control unit may adjust the sharing ratio of the first electric power according to the relative relationship between the importance degree of the fuel efficiency performance and the traveling performance. Alternatively, the control means may adjust the sharing ratio of the first power so as to prevent the second power source having a relatively small capacity from being depleted. Alternatively, the selection unit may adjust the sharing ratio of the first power so as to positively use the second power supply having a relatively large output in accordance with a rapid increase or decrease in the required power.

  As a result, even if the control means continues to select the same travel mode as the desired travel mode by the selection means (in other words, another travel mode is not newly selected as the desired travel mode) The sharing ratio of the first power can be changed. That is, the share ratio of the first power may be changed as appropriate by adjustment by the control means in addition to or instead of selection of the travel mode by the selection means.

  As described above, the first power supply control device can appropriately change the sharing ratio of the first power. In other words, according to the first power supply control device, the sharing ratio of the first power does not always have to be fixed to the same sharing ratio. Therefore, the first power supply control device sets the sharing ratio of the first power to an appropriate (or optimal) sharing ratio according to the change of the characteristics each time the characteristics required for the vehicle change. can do. As a result, the first power supply control device can appropriately use the first power supply and the second power supply according to the sharing ratio determined based on the selection of the travel mode by the selection means. In other words, when the characteristic required for the vehicle is the first characteristic, the first power supply control device determines the first power supply and the first power supply based on the first sharing ratio that realizes the first characteristic. 2 power supplies can be used as needed. On the other hand, the first power supply control device, when the characteristic required for the vehicle is the second characteristic different from the first characteristic, the second sharing ratio that realizes the second characteristic Based on the above, the first power source and the second power source can be used appropriately according to circumstances. As described above, the first power supply control device can appropriately use the first power supply and the second power supply appropriately so as to realize compatibility of a plurality of different characteristics.

  Note that the control methods disclosed in Patent Documents 1 and 2 described above do not have the technical idea of changing the share of the first power according to the characteristics required of the vehicle. That is, in the control methods disclosed in Patent Documents 1 and 2, in principle, the battery sharing ratio is fixed to 100%. In addition, the control methods disclosed in Patent Documents 1 and 2 charge the capacitor and discharge the capacitor only when rapid charging or discharging from the battery can occur. Only. Therefore, since the control methods disclosed in Patent Documents 1 and 2 can only suppress the deterioration of the battery, the battery and the capacitor can be changed flexibly (that is, the vehicle) so as to realize a plurality of different characteristics. It is difficult to use properly) However, since the first power supply control device can appropriately change the share of the first power by selecting the travel mode by the selection means, the first power supply and the second power supply can be changed flexibly (that is, in the vehicle). It has the advantage that it can be used properly (depending on the required characteristics). Furthermore, in the first power supply control device, if the share of the first power is adjusted within the range of the desired driving mode selected by the selection means, the first power supply and the second power supply are made more flexible. In other words, it has an advantage that it can be used properly (according to characteristics required for the vehicle).

<2>
In another aspect of the first power supply control device, the plurality of travel modes include: (i) a first travel mode in which the share of the first power is smaller than a first threshold; and (ii) the first power And a second traveling mode in which the sharing ratio is greater than the first threshold value.

  According to this aspect, the selection means has the first traveling mode in which the sharing ratio of the first power is relatively small and the sharing ratio of the first power is relatively large according to the characteristics required of the vehicle. One of the driving modes can be selected.

  Note that the first threshold value appropriately determines the first traveling mode and the second traveling mode that can satisfy different characteristics, taking into account the correlation between the characteristics required of the vehicle and the share of the first power. It is preferable to set an arbitrary value that can be distinguished.

<3>
In another aspect of the first power supply control device, the plurality of travel modes include: (i) a first travel mode in which a share ratio of the first power is smaller than a share ratio of the second power with respect to the required power; And (ii) a second traveling mode in which a sharing ratio of the first power is larger than a sharing ratio of the second power.

  According to this aspect, the selection means has the first traveling mode in which the sharing ratio of the first power is relatively small and the sharing ratio of the first power is relatively large according to the characteristics required of the vehicle. One of the driving modes can be selected.

<4>
In the aspect of the first power supply control device in which the plurality of travel modes include the first and second travel modes, the selection is performed when the characteristics required for the vehicle are characteristics that place greater emphasis on fuel consumption performance than travel performance. The means selects the first travel mode, and the selection means selects the second travel mode when the characteristic required for the vehicle is a characteristic in which travel performance is more important than fuel efficiency.

  According to this aspect, when the vehicle places more importance on the fuel efficiency performance (for example, improvement of fuel efficiency) than the driving performance (for example, improvement of driving response), the selection means has a relative share of the first power. The first traveling mode that becomes smaller is selected. As a result, when the first travel mode is selected, the share of the first power is smaller than when the second travel mode is selected, while the share of the second power is growing. Here, since the capacity of the second power source is relatively small and the output of the second power source is relatively large, the input / output efficiency of the second power in the second power source is the input power of the first power in the first power source. Generally better than output efficiency. For this reason, the fuel consumption performance of a vehicle improves, so that the share ratio of 2nd electric power becomes large (in other words, the share ratio of 1st electric power becomes small). That is, when the first travel mode is selected, the fuel efficiency of the vehicle is improved compared to when the second travel mode is selected.

  On the other hand, when the vehicle places more importance on the driving performance than the fuel efficiency, the selection unit selects the second driving mode in which the share of the first electric power is relatively large. As a result, when the second travel mode is selected, the share of the first power is larger than when the first travel mode is selected, while the share of the second power is Get smaller. In this case, since the second power to be output from the second power supply is relatively small, it is difficult for the second power supply to be exhausted. In other words, the depletion of the second power source is suppressed. As a result, since the capacity of the second power source is relatively easily reduced as compared with the case where the depletion of the second power source is not suppressed, the cost and size of the second power source can be reduced. Furthermore, when a large required power is temporarily required to satisfy the running performance (for example, acceleration at a relatively large acceleration), the second power source having a relatively large output is temporarily connected to the first power source. It is preferable that the required power is satisfied by outputting two powers (that is, the first power output from the first power source is supported). Then, when the exhaustion of the second power source is suppressed, the second power source easily outputs the second power in order to satisfy such running performance. In other words, it is difficult for the second power source to output the second power at a timing at which the second power source should temporarily output the second power in accordance with fluctuations in the required power. As a result, it is possible to satisfy characteristics that place importance on running performance for a longer time.

  Note that the selection according to this aspect is preferably performed when the vehicle is powering. On the other hand, when the vehicle is regenerating, the selection means may perform selection according to this aspect. Alternatively, when the vehicle is regenerating, is the selection means whether the characteristic required for the vehicle is a characteristic that emphasizes the fuel consumption performance rather than the driving performance or the characteristic that emphasizes the driving performance rather than the fuel consumption performance? Regardless, the first traveling mode in which the share of the second power is relatively large may be selected. As a result, when the vehicle is regenerating, input of the second power to the second power supply (that is, charging of the second power supply by the power generated by the regeneration) is given priority.

<5>
In the aspect of the first power supply control device that selects the second travel mode when the characteristics required for the vehicle are characteristics that place importance on the travel performance rather than the fuel efficiency performance, the first power supply and the second power supply If the difference between at least one current characteristic value and the rated limit value of at least one of the first power supply and the second power supply is smaller than a second threshold value, the characteristic required for the vehicle is fuel efficiency performance. Even in the case where the driving performance is more important than the characteristics, the selection unit does not select the second driving mode.

  According to this aspect, when the difference between the current characteristic value of the first power source and the rated limit value of the first power source is smaller than the second threshold value, the first power source performs a stable operation or an intended operation. There is a risk that it will not be possible. That is, in such a case, there is a possibility that the first power source cannot perform input / output of the first power sufficient to satisfy the traveling performance. Similarly, when the difference between the current characteristic value of the second power source and the rated limit value of the second power source is smaller than the second threshold value, the second power source cannot perform a stable operation or an intended operation. There is a fear. That is, in such a case, there is a possibility that the second power source cannot perform input / output of the second power sufficient to satisfy the traveling performance. Therefore, when there is a possibility that at least one of the first power source and the second power source cannot perform a stable operation or an intended operation, the characteristics required of the vehicle place importance on the driving performance rather than the fuel efficiency performance. Even if it is a characteristic to do, a selection means does not need to select the 2nd driving mode with which the sharing ratio for attaching importance to driving performance was matched.

  The “current characteristic value of the power source” means an arbitrary parameter that can directly or indirectly indicate the current state of the power source. Examples of such current characteristic values of the power source include the current temperature of the power source and the current SOC value of the power source. The “rated rating limit value of the power supply” means a limit value that can be taken by the current characteristic value of the power supply and is determined by the rating or the like. Examples of the rated limit value of the power source include a limit value of a temperature at which the power source can operate, a limit value of an SOC value that can be taken by the power source, and the like.

  In addition, the second threshold is a state in which the first power supply can perform input / output of the first power sufficient to satisfy the traveling performance and the first power sufficient to satisfy the traveling performance in consideration of the specification of the first power supply. Is preferably set to an arbitrary value that can be appropriately distinguished from a state in which the first power supply cannot perform input / output. Furthermore, the second threshold value is a second value that satisfies the driving performance and a state in which the second power source can perform input / output of the second power sufficient to satisfy the traveling performance in consideration of the specifications of the second power source. It is preferably set to an arbitrary value that can be appropriately distinguished from the state in which the second power source cannot input and output power.

<6>
In another aspect of the first power supply control device, the control means includes a current characteristic value of at least one of the first power supply and the second power supply and at least one of the first power supply and the second power supply. The share ratio of the first power is adjusted according to the difference between the rated limit value of the first power.

  According to this aspect, the difference between the current characteristic value of the first power source and the rated limit value of the first power source can substantially allow the first power source to perform a stable operation or an intended operation. Indicates whether or not. For this reason, the first power supply control device adjusts the sharing ratio of the first power according to the difference between the current characteristic value of the first power supply and the rated limit value of the first power supply, so that the first power supply and The second power source can be used more and more flexibly.

  Similarly, the difference between the current characteristic value of the second power source and the rated limit value of the second power source substantially determines whether the second power source can perform a stable operation or an intended operation. Is shown. For this reason, the first power supply control device adjusts the sharing ratio of the first power according to the difference between the current characteristic value of the second power supply and the rated limit value of the second power supply, so that the first power supply and The second power source can be used more and more flexibly.

  The adjustment of the sharing ratio of the first power according to this aspect is performed when the difference between the current characteristic value of the first power supply and the rated limit value of the first power supply is smaller than the second threshold (that is, the first power supply is stable). May be performed in a case where there is a possibility that a normal operation or an intended operation cannot be performed). Similarly, the adjustment of the sharing ratio of the first power according to this aspect is performed when the difference between the current characteristic value of the second power source and the rated limit value of the second power source is smaller than the second threshold (that is, the second power source is It may be performed when there is a possibility that a stable operation or an intended operation cannot be performed. That is, the adjustment of the share ratio of the first power according to this aspect is the difference between the current characteristic value of the first power source and the rated limit value of the first power source, and the current characteristic value of the second power source and the rated limit of the second power source. When both of the differences between the values are not smaller than the second threshold (that is, when it is estimated that both the first power supply and the second power supply can perform stable operation or intended operation). It doesn't have to be done.

<7>
As described above, the sharing ratio of one electric power is determined according to the difference between the current characteristic value of at least one of the first power supply and the second power supply and the rated limit value of at least one of the first power supply and the second power supply. In the aspect of the first power supply control device to be adjusted, the control means sets the sharing ratio of the first power as the difference between the current characteristic value of the first power supply and the rated limit value of the first power supply becomes smaller. Decrease.

  According to this aspect, when the difference between the current characteristic value of the first power supply and the rated limit value of the first power supply is relatively small, the current characteristic value of the first power supply and the rated limit value of the first power supply. There is a higher possibility that the first power supply cannot perform a stable operation or an intended operation as compared with a case where the difference between is relatively large. For this reason, in this case, the first power supply control device reduces the share of the first power (that is, reduces the burden on the first power supply), thereby stabilizing the state of the first power supply or It is possible to return to a state where the intended operation can be performed. In this manner, the first power supply control device can properly use the first power supply and the second power supply more flexibly.

<8>
As described above, the sharing ratio of one electric power is determined according to the difference between the current characteristic value of at least one of the first power supply and the second power supply and the rated limit value of at least one of the first power supply and the second power supply. In the aspect of the first power supply control device to be adjusted, the control means sets the share of the first power as the difference between the current characteristic value of the second power supply and the rated limit value of the second power supply becomes smaller. increase.

  According to this aspect, when the difference between the current characteristic value of the second power source and the rated limit value of the second power source is relatively small, the current characteristic value of the second power source and the rated limit value of the second power source. There is a higher possibility that the second power supply cannot perform a stable operation or an intended operation as compared to a case where the difference between the two is relatively large. For this reason, in this case, the first power supply control device increases the share of the first power (that is, the load on the first power supply is increased to substantially reduce the load on the second power supply). Thus, the state of the second power supply can be returned to a state where stable operation or intended operation can be performed. In this manner, the first power supply control device can properly use the first power supply and the second power supply more flexibly.

(Second power supply control device)
<9>
A second power supply control device that solves the above problems includes a first power source that inputs and outputs a first power, and a first power source that inputs and outputs a second power and has a smaller capacity and a larger output than the first power source. A power supply control apparatus for controlling a vehicle that travels using a power supply system that includes both of two power supplies, wherein the first power with respect to a required power required for the power supply system according to characteristics required for the vehicle And adjusting the first power supply and the second power supply so as to input / output the first power and the second power according to the sharing ratio adjusted by the adjusting means. Control means.

  Similar to the first power supply control device, the second power supply control device can control a vehicle that travels using a power supply system that includes both the first power supply and the second power supply. The description of the same configuration as that of the first power supply control device is omitted.

  In order to control such a vehicle (in other words, a power supply system included in such a vehicle), the second power supply control device includes an adjustment unit and a control unit.

  The adjusting means adjusts the share ratio of the first power with respect to the required power. In particular, the adjusting means dynamically adjusts the share of the first power according to the characteristics required for the vehicle (that is, every time the characteristics required for the vehicle change). For example, the selection unit may adjust the sharing ratio of the first power so that the sharing ratio is suitable (or optimal) for the characteristics required for the vehicle. Alternatively, for example, the adjusting means may adjust the sharing ratio of the first power so that the sharing ratio that can realize the characteristics required for the vehicle is achieved.

  More specifically, for example, when the characteristic required of the vehicle is a characteristic that emphasizes the driving performance rather than the fuel efficiency performance, the adjustment unit has a sharing ratio suitable for the characteristic that emphasizes the driving performance. As such, the sharing ratio of the first power may be adjusted. Alternatively, when the characteristic required of the vehicle is a characteristic that emphasizes the fuel consumption performance rather than the driving performance, the adjusting means is configured to have a sharing ratio suitable for the characteristic of emphasizing the fuel consumption performance. You may adjust the share of electric power. Alternatively, when the characteristics required for the vehicle are other characteristics, the adjusting means may adjust the sharing ratio of the first power so that the sharing ratio is suitable for the other characteristics. Alternatively, the adjusting means may adjust the share of the first power according to the relative relationship between the importance level of the fuel efficiency and the running performance. Alternatively, the adjusting unit may adjust the share of the first power so as to prevent the second power source having a relatively small capacity from being depleted. Alternatively, the adjustment unit may adjust the share ratio of the first power so as to positively use the second power supply having a relatively large output in accordance with a rapid increase or decrease in the required power.

  In this way, the adjusting means can appropriately adjust the share of the first power whenever the characteristics required of the vehicle change in accordance with the traveling of the vehicle. That is, the adjustment means can substantially change the sharing ratio of the first power according to the characteristics required for the vehicle.

  The control means controls the first power supply so as to input / output the first power according to the sharing ratio adjusted by the adjustment means. Similarly, the control unit controls the second power supply so as to input / output the second power according to the sharing ratio adjusted by the adjustment unit. As a result, the first power supply inputs and outputs the first power that directly satisfies the sharing ratio adjusted by the adjusting means. The second power source inputs and outputs second power that indirectly satisfies the sharing ratio adjusted by the adjusting means. Therefore, the first power source and the second power source are selectively used according to the sharing ratio adjusted by the adjusting means.

  As described above, the second power supply control device can appropriately change the sharing ratio of the first power, similarly to the first power supply control device. In other words, according to the second power supply control device, as with the first power supply control device, the sharing ratio of the first power need not always be fixed to the same sharing ratio. Therefore, the second power supply control device can enjoy the same effects as the various effects that the first power supply control device enjoys. In other words, the second power supply control device can appropriately use the first power supply and the second power supply appropriately so as to realize compatibility between a plurality of different characteristics.

<10.11>
In another aspect of the second power supply control device, the adjusting means may: (i) share the first electric power when the characteristic required for the vehicle is a characteristic that emphasizes fuel efficiency rather than driving performance. Adjusting the share ratio of the first electric power so that the ratio is smaller than the first threshold, and (ii) when the characteristic required for the vehicle is a characteristic that emphasizes driving performance rather than fuel efficiency performance, The sharing ratio of the first power is adjusted so that the sharing ratio of the first power is larger than the threshold.

  Alternatively, in another aspect of the second power supply control device, the adjusting means may: (i) if the characteristic required for the vehicle is a characteristic in which fuel efficiency is more important than driving performance, the first power The share ratio of the first electric power is adjusted so that the share ratio of the second electric power is smaller than the share ratio of the second electric power with respect to the required electric power, and (ii) the characteristics required of the vehicle are higher than the fuel efficiency performance. In the case of a characteristic that places importance on the power, the sharing ratio of the first power is adjusted so that the sharing ratio of the first power is larger than the sharing ratio of the second power.

  According to these aspects, when the vehicle places more importance on the fuel efficiency than the running performance, the adjusting means adjusts the sharing ratio of the first power so that the sharing ratio of the first power becomes relatively small. . Therefore, as with the first power supply control device, the fuel efficiency of the vehicle is improved. On the other hand, when the vehicle places more importance on the driving performance than the fuel efficiency, the adjusting means adjusts the sharing ratio of the first power so that the sharing ratio of the first power becomes relatively large. Accordingly, the cost, size, etc. of the second power supply can be reduced as in the first power supply control device. Similarly, it is possible to satisfy characteristics that place importance on running performance for a longer time.

<12.13>
A second power source that adjusts the sharing ratio of the first electric power so that the sharing ratio of the first electric power is larger than the first threshold when the characteristic required for the vehicle is a characteristic that emphasizes the driving performance rather than the fuel consumption performance. In the aspect of the control device, in the aspect of the first power supply control device that selects the second traveling mode, the current characteristic value of at least one of the first power supply and the second power supply, the first power supply, and the second power supply are selected. When the difference between the rated limit value of at least one of the power supplies is smaller than the second threshold value, even if the characteristic required for the vehicle is a characteristic that emphasizes driving performance rather than fuel efficiency performance The adjusting unit does not adjust the sharing ratio of the first power so that the sharing ratio of the first power is larger than the first threshold.

  Alternatively, the first power sharing ratio is adjusted so that the first power sharing ratio is greater than the second power sharing ratio when the characteristics required of the vehicle are characteristics that emphasize driving performance rather than fuel efficiency performance. In the aspect of the second power supply control apparatus, in the aspect of the first power supply control apparatus that selects the second travel mode, the current characteristic value of at least one of the first power supply and the second power supply and the first power supply When the difference between the rated limit value of at least one of the power source and the second power source is smaller than the second threshold value, the characteristic required for the vehicle is a characteristic that places more emphasis on driving performance than fuel efficiency performance. Even in this case, the adjusting means does not adjust the sharing ratio of the first power so that the sharing ratio of the first power is larger than the sharing ratio of the second power.

  According to these aspects, similarly to the first power supply control device, when there is a possibility that at least one of the first power supply and the second power supply cannot perform a stable operation or an intended operation, Even when the characteristic required for the vehicle is a characteristic in which the driving performance is more important than the fuel efficiency, the adjusting means adjusts the sharing ratio of the first electric power so as to be a sharing ratio for emphasizing the driving performance. You don't have to.

<14>
In another aspect of the second power supply control device, the adjustment means includes a current characteristic value of at least one of the first power supply and the second power supply and at least one of the first power supply and the second power supply. The share ratio of the first electric power is further adjusted according to the difference between the rated limit value and the first power limit.

  According to this aspect, similarly to the first power supply control device, the second power supply control device uses the first power according to the difference between the current characteristic value of the first power supply and the rated limit value of the first power supply. By adjusting the sharing ratio, the first power source and the second power source can be used more appropriately and flexibly. Similarly, the second power supply control device, like the first power supply control device, shares the first power according to the difference between the current characteristic value of the second power supply and the rated limit value of the second power supply. By adjusting, the first power source and the second power source can be used appropriately and flexibly.

<15>
As described above, the sharing ratio of one electric power is determined according to the difference between the current characteristic value of at least one of the first power supply and the second power supply and the rated limit value of at least one of the first power supply and the second power supply. In the aspect of the second power supply control device to be adjusted, the adjusting means sets the share of the first power as the difference between the current characteristic value of the first power supply and the rated limit value of the first power supply becomes smaller. Decrease.

  According to this aspect, the second power supply control device reduces the share of the first power (that is, reduces the burden on the first power supply) in the same manner as the first power supply control device. This state can be returned to a state where stable operation or intended operation can be performed.

<16>
As described above, the sharing ratio of one electric power is determined according to the difference between the current characteristic value of at least one of the first power supply and the second power supply and the rated limit value of at least one of the first power supply and the second power supply. In the aspect of the second power supply control device to be adjusted, the adjustment means sets the share ratio of the first power as the difference between the current characteristic value of the second power supply and the rated limit value of the second power supply becomes smaller. increase.

  According to this aspect, the second power supply control device increases the sharing ratio of the first power (that is, by increasing the burden on the first power supply, as in the first power supply control device, the first power supply control device substantially increases the first power supply share). By reducing the burden of the two power sources), the state of the second power source can be returned to a state where stable operation or intended operation can be performed.

  These effects and other advantages of the present invention will be further clarified from the embodiments described below.

It is a block diagram which shows an example of a structure of the vehicle of this embodiment. It is a flowchart which shows the flow of the whole control operation (substantially the control operation of a power supply system, and the change operation of the share of a battery and a capacitor) of this embodiment. It is a graph which shows typically a mode of change of a share ratio of a battery and a capacitor. It is a graph which shows typically the relation between request output electric power, battery output electric power, and capacitor output electric power when the share ratio of a battery and a capacitor differs. It is a graph which shows the temperature characteristic of a battery and a capacitor. It is a graph which shows adjustment operation of the share of a battery and a capacitor according to SOC (State Of Charge) of a capacitor. It is a graph which shows the adjustment operation | movement of the share of a battery and a capacitor according to the temperature of a battery.

  Hereinafter, an embodiment in which the present invention is applied to a vehicle 1 including a motor generator 10 will be described as an example of an embodiment for carrying out the present invention with reference to the drawings.

(1) Configuration of Vehicle First, the configuration of the vehicle 1 of the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing an example of the configuration of the vehicle 1 according to this embodiment.

  As shown in FIG. 1, the vehicle 1 includes a motor generator 10, an axle 21, wheels 22, a power supply system 30, and a specific example of “power supply control device (that is, selection means, adjustment means, and control means)”. ECU40 which is.

  The motor generator 10 functions as an electric motor that supplies power (that is, power necessary for traveling of the vehicle 1) to the axle 21 by being driven mainly by using electric power output from the power supply system 30 during power running. Furthermore, the motor generator 10 mainly functions as a generator for charging the battery 31 and the capacitor 32 included in the power supply system 30 during regeneration.

  The axle 21 is a transmission shaft for transmitting the power output from the motor generator 10 to the wheels 22.

  The wheels 22 are means for transmitting power transmitted via the axle 21 to the road surface. FIG. 1 shows an example in which the vehicle 1 includes one wheel 22 on each side, but actually, each vehicle 22 includes one wheel 22 on each of the front, rear, left, and right sides (that is, a total of four wheels 12). Is preferred.

  FIG. 1 illustrates a vehicle 1 including a single motor generator 10. However, the vehicle 1 may include two or more motor generators 10. Furthermore, the vehicle 1 may further include an engine in addition to the motor generator 10. That is, the vehicle 1 of the present embodiment may be an electric vehicle or a hybrid vehicle.

  The power supply system 30 outputs power necessary for the motor generator 10 to function as an electric motor to the motor generator 10 during power running. Furthermore, the electric power generated by the motor generator 10 that functions as a generator is input from the motor generator 10 to the power supply system 30 during regeneration.

  Such a power supply system 30 includes a battery 31 that is a specific example of “first power supply”, a capacitor 32 that is a specific example of “second power supply”, a power converter 33, a smoothing capacitor 34, and an inverter. 35.

  The battery 31 is a storage battery that can input and output power (that is, charge and discharge) using an electrochemical reaction (that is, a reaction that converts chemical energy into electrical energy) or the like. Examples of such a battery 31 include a lead storage battery, a lithium ion battery, a nickel metal hydride battery, and a fuel cell.

  The capacitor 32 can input and output electric power by using a physical action or a chemical action that accumulates electric charges (that is, electric energy). An example of such a capacitor 32 is an electric double layer capacitor, for example.

  Instead of the battery 31 and the capacitor 32, any two types of power sources capable of inputting and outputting power may be used. In this case, the power source used instead of the battery 31 may be a power source having a larger capacity (or higher energy density) than a power source used instead of the capacitor 32. Alternatively, the power source used in place of the battery 31 may be a power source that can output a certain amount of power for a longer time than the power source used in place of the capacitor 32. Further, the power source used in place of the capacitor 32 may be a power source having a larger output than the power source used in place of the battery 31. Alternatively, the power source used in place of the capacitor 32 may be a power source capable of performing power input / output more rapidly (steeply) than the power source used in place of the battery 31. As an example of such two types of power sources, for example, a high capacity battery (that is, a power source used in place of the battery 31) and a high output type battery (that is, a power source used in place of the capacitor 32), a high capacity Type capacitor (that is, a power source used in place of the battery 31) and a high output type capacitor (that is, a power source used in place of the capacitor 32).

  The power converter 33 controls the electric power output from the battery 31 and the electric power output from the capacitor 32 under the control of the ECU 40 to the required power required by the power supply system 30 (typically, the power supply system 30 is connected to the motor generator 10. In accordance with the power to be output. The power converter 33 outputs the converted power to the inverter 35. Further, the power converter 33 converts the power input from the inverter 35 under the control of the ECU 40 (that is, the power generated by the regeneration of the motor generator 10) to the required power (typically, required for the power supply system 30). Is electric power to be input to the power supply system 30, and is substantially converted in accordance with electric power to be input to the battery 31 and the capacitor 32). The power converter 33 outputs the converted power to at least one of the battery 31 and the capacitor 32. By such power conversion, the power converter 33 substantially controls the distribution of power between the battery 31 and the capacitor 32 and the inverter 35 and the distribution of power between the battery 31 and the capacitor 32. Can do.

  FIG. 1 illustrates a power supply system 30 including a single power converter 33 common to the battery 31 and the capacitor 32. However, the power supply system 30 may include two or more power converters 33 (for example, a power converter 33 corresponding to the battery 31 and a power converter 33 corresponding to the capacitor 32).

  The smoothing capacitor 34 smoothes fluctuations in power supplied from the power converter 33 to the inverter 34 (actually fluctuations in voltage on the power supply line between the power converter 33 and the inverter 34) during powering. Turn into. Similarly, during the regeneration, the smoothing capacitor 34 changes the power supplied from the inverter 34 to the power converter 33 (substantially changes in the voltage in the power supply line between the power converter 33 and the inverter 34). ) Is smoothed.

  The inverter 35 converts power (DC power) output from the power converter 33 into AC power during powering. Thereafter, the inverter 35 supplies the electric power converted into AC power to the motor generator 10. Furthermore, the inverter 35 converts the electric power (AC power) generated by the motor generator 10 into DC power during regeneration. Thereafter, the inverter 35 supplies the power converted to DC power to the power converter 33.

  The ECU 40 is an electronic control unit configured to be able to control the entire operation of the vehicle 1. The ECU 40 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.

  In particular, the ECU 40 controls power distribution in the power converter 33 described above. More specifically, the ECU 40 controls the power converter 33 so as to arbitrarily change the sharing ratio of the battery 31 and the capacitor 32 according to the characteristics required for the vehicle. The “sharing ratio” here refers to the power input / output by the battery 31 with respect to the required power required for the power supply system 30 (hereinafter referred to as “battery power” as appropriate) and the power input / output by the capacitor 32 (hereinafter referred to as “battery power”). (Referred to as “capacitor power” as appropriate). During power running, the required power is substantially the required output power that the power supply system 30 should output to the motor generator 10. Therefore, in this case, the sharing ratio is referred to as power output from the battery 31 (hereinafter referred to as “battery output power” as appropriate) and power output from the capacitor 32 (hereinafter referred to as “capacitor output power” as appropriate). ) Ratio. On the other hand, at the time of regeneration, for example, the required power is substantially the required input power to be input from the motor generator 10 to the power supply system 30. Therefore, in this case, the sharing ratio is determined based on the power input to the battery 31 with respect to the required input power (hereinafter referred to as “battery input power” as appropriate) and the power input to the capacitor 32 (hereinafter referred to as “capacitor input power” as appropriate). Ratio).

  Hereinafter, detailed description of the changing operation of the sharing ratio of the battery 31 and the capacitor 32 performed under the control of the ECU 40 will be continued.

(2) Battery and capacitor sharing ratio changing operation Next, referring to FIG. 2 to FIG. 5, the control operation of the vehicle 1 of this embodiment (substantially the control operation of the power supply system 30, the battery 31 and the sharing ratio change operation of the capacitor 32).

(2-1) Overall Flow of Changing Operation of Battery and Capacitor Share Ratio First, referring to FIG. 2, the control operation of the vehicle 1 of the present embodiment (substantially the control operation of the power supply system 30). Yes, the overall flow of the sharing ratio of the battery 31 and the capacitor 32) will be described. FIG. 2 is a flowchart showing the overall flow of the control operation of the vehicle 1 of the present embodiment (substantially the control operation of the power supply system 30 and the operation of changing the sharing ratio of the battery 31 and the capacitor 32).

  As shown in FIG. 2, the ECU 40 determines whether or not the characteristic required for the vehicle is a characteristic that places more emphasis on driving performance than fuel efficiency (step S10). For example, as a driving mode of the vehicle 1, an example will be described in which there are a sports mode in which driving performance is emphasized and an eco mode in which fuel efficiency is emphasized. In this case, for example, the ECU 40 determines whether or not the characteristic required for the vehicle is a characteristic in which the driving performance is more important than the fuel efficiency based on the user's operation via the operation button for designating the sports mode and the eco mode. It may be determined. Alternatively, the ECU 40 may voluntarily determine whether or not the characteristics required of the vehicle are characteristics that place importance on the traveling performance rather than the fuel efficiency performance in consideration of the traveling condition of the vehicle.

  As a result of the determination in step S10, when it is determined that the characteristic required for the vehicle is a characteristic in which the driving performance is more important than the fuel efficiency (step S10: Yes), the ECU 40 sets the driving mode of the vehicle 1 as the driving mode. The sports mode is selected (step S11). In this case, the ECU 40 determines (in other words, adjusts) the sharing ratio of the battery 31 and the capacitor 32 based on the sport mode (step S13). The operation of determining the sharing ratio between the battery 31 and the capacitor 32 based on the sport mode will be described in detail later (see FIGS. 3 and 4).

  In addition, since the power supply system 30 is not provided with power supplies other than the battery 31 and the capacitor 32, if the share ratio of the battery 31 is determined, the share ratio of the capacitor 32 is also substantially determined. Therefore, it is sufficient for the ECU 40 to determine the sharing ratio of at least one of the battery 31 and the capacitor 32. However, the power supply system 30 may include a power supply other than the battery 31 and the capacitor 32. In this case, it is preferable that the ECU 40 determines a sharing ratio of at least two of the battery 31, the capacitor 32, and other power sources.

  On the other hand, as a result of the determination in step S10, the characteristic required for the vehicle is not a characteristic that emphasizes the driving performance rather than the fuel consumption performance (that is, the characteristic required for the vehicle emphasizes the fuel efficiency more than the driving performance). If it is determined (step S10: No), the ECU 40 selects the eco mode as the vehicle travel mode (step S12). In this case, the ECU 40 determines (in other words, adjusts) the sharing ratio between the battery 31 and the capacitor 32 based on the eco mode (step S13). The operation of determining the sharing ratio between the battery 31 and the capacitor 32 based on the eco mode will be described in detail later (see FIGS. 3 and 4).

  Thereafter, the ECU 40 controls the power converter 32 so that the battery 31 inputs and outputs battery power and the capacitor 32 inputs and outputs capacitor power according to the sharing ratio determined in step S13 (step S14). As a result, the battery 31 performs input / output of battery power according to the sharing ratio determined in step S13. Similarly, the capacitor 32 inputs and outputs capacitor power according to the sharing ratio determined in step S13.

  The above operation is repeated periodically or non-periodically until the vehicle 1 finishes traveling (step S15).

(2-2) Details of Operation of Changing Battery / Capacitor Share Ratio Next, referring to FIG. 3 and FIG. 4, change of the share ratio of the battery 31 and the capacitor 32 according to the sport mode and the eco mode (substantially The details of the determination operation will be described. FIG. 3 is a graph schematically showing how the sharing ratio of the battery 31 and the capacitor 32 is changed. FIG. 4 is a graph schematically showing the relationship between the required output power, the battery output power, and the capacitor output power when the sharing ratios of the battery 31 and the capacitor 32 are different.

  As shown in FIG. 3A to FIG. 3C, in this embodiment, the sport mode and the eco mode are travel modes that can be distinguished from each other depending on, for example, the sharing ratio of the battery 31 and the capacitor 32. .

  For example, the sport mode and the eco mode are distinguished according to the magnitude relationship between the sharing ratio of the battery 31 (that is, the sharing ratio of the battery output power) and the sharing ratio of the capacitor 32 (that is, the sharing ratio of the capacitor output power). Also good.

  Specifically, for example, as shown in FIG. 3A, in the sport mode, in powering, the sharing ratio of the battery 31 (that is, the sharing ratio of the battery output power) is the sharing ratio of the capacitor 32 (that is, the capacitor A traveling mode in which the output power sharing ratio) is greater may be used. FIG. 3A shows an example in which the sharing ratio of the battery 31 is increased in the sport mode as the degree of emphasis on running performance is stronger (that is, the shift to the left side in FIG. 3A). Show.

  When the sport mode is selected, the ECU 40 determines the sharing ratio of the battery 31 and the capacitor 32 so that the sharing ratio of the battery 31 during power running is larger than the sharing ratio of the capacitor 32 during power running. Good. Specifically, for example, as indicated by a point S1 in FIG. 3A, the ECU 40 determines that the battery 31 and the capacitor 31 so that the sharing ratio of the battery 31 is 100% and the sharing ratio of the capacitor 32 is 0%. You may determine the share ratio of 32. In this case, as shown in FIG. 4A, all of the required output power is output from the battery 31 as battery output power. Alternatively, for example, as indicated by point S2 in FIG. 3A, the ECU 40 shares the battery 31 and the capacitor 32 so that the sharing ratio of the battery 31 is 80% and the sharing ratio of the capacitor 32 is 20%. The proportion may be determined. In this case, as shown in FIG. 4B, 80% of the required output power is output from the battery 31 as the battery output power, and 20% of the required output power is output from the capacitor 32 as the capacitor output power. Is output.

  On the other hand, for example, as shown in FIG. 3A, the eco mode may be a traveling mode in which the sharing ratio of the battery 31 is smaller than the sharing ratio of the capacitor 32 during powering. FIG. 3A shows an example in which the sharing ratio of the battery 31 is smaller in the eco mode as the degree of emphasis on the fuel efficiency is stronger (that is, the shift to the right side in FIG. 3A). Show.

  When the eco mode is selected, the ECU 40 determines the sharing ratio of the battery 31 and the capacitor 32 so that the sharing ratio of the battery 31 during power running is smaller than the sharing ratio of the capacitor 32 during power running. Good. Specifically, for example, as shown at point E1 in FIG. 3A, the ECU 40 sets the battery 31 and the capacitor so that the sharing ratio of the battery 31 is 0% and the sharing ratio of the capacitor 32 is 100%. You may determine the share ratio of 32. In this case, as shown in FIG. 4C, all of the required output power is output from the capacitor 32 as the capacitor output power. Alternatively, for example, as indicated by point E2 in FIG. 3A, the ECU 40 shares the battery 31 and the capacitor 32 such that the sharing ratio of the battery 31 is 30% and the sharing ratio of the capacitor 32 is 70%. The proportion may be determined. In this case, as shown in FIG. 4D, 30% of the required output power is output from the battery 31 as the battery output power, and 70% of the required output power is output from the capacitor 32 as the capacitor output power. Is output.

  However, as can be seen from FIG. 4A to FIG. 4D, the sharing ratio determined in step S13 in FIG. 2 is (i) the battery output power corresponding to the sharing ratio is determined by the battery 31. Maintained when the upper limit value of the battery output power that can be output is not exceeded and (ii) the capacitor output power corresponding to the sharing ratio does not exceed the upper limit value of the capacitor output power that the capacitor 32 can output. The That is, when both the battery output power and the capacitor output power corresponding to the sharing ratio determined in step S13 in FIG. 2 do not exceed the respective upper limit values, the ECU 40 sets the sharing ratio determined in step S13. Accordingly, it is preferable to continue to control the power converter 32 so that the battery 31 outputs the battery output power and the capacitor 32 outputs the capacitor output power.

  On the other hand, when the battery output power corresponding to the sharing ratio determined in step S13 in FIG. 2 exceeds the upper limit value, the battery output power is determined regardless of the sharing ratio determined in step S13 in FIG. It is preferable that the shortage is compensated by the capacitor output power (see FIGS. 4A and 4B). That is, it is preferable that the ECU 40 controls the power converter 32 so that the shortage of the battery output power is compensated for by the capacitor output power regardless of the sharing ratio determined in step S13.

  Similarly, when the capacitor output power corresponding to the sharing ratio determined in step S13 in FIG. 2 exceeds the upper limit value, the capacitor output power is determined regardless of the sharing ratio determined in step S13 in FIG. It is preferable that the shortage is compensated by the battery output power (see FIGS. 4C and 4D). That is, it is preferable that the ECU 40 controls the power converter 32 so that the shortage of the capacitor output power is compensated by the battery output power regardless of the sharing ratio determined in step S13.

  The same can be said for the regeneration described below. That is, when both the battery input power and the capacitor input power corresponding to the sharing ratio determined in step S13 in FIG. 2 do not exceed the respective upper limit values, the ECU 40 sets the sharing ratio determined in step S13. Accordingly, it is preferable to continue to control the power converter 32 so that the battery input power is input to the battery 31 and the capacitor input power is input to the capacitor 32. On the other hand, when the battery input power corresponding to the sharing ratio determined in step S13 in FIG. 2 exceeds the upper limit value, the ECU 40 determines the battery input power regardless of the sharing ratio determined in step S13. It is preferable to control the power converter 32 so that the excess is input to the capacitor 32 as the capacitor input power. Similarly, when the capacitor input power corresponding to the sharing ratio determined in step S13 of FIG. 2 exceeds the upper limit value, the ECU 40 determines the capacitor input power regardless of the sharing ratio determined in step S13. It is preferable to control the power converter 32 so that the excess is input to the battery 31 as battery input power.

  FIG. 3A shows an example in which the sport mode is a travel mode associated with a range in which the battery sharing ratio is 0% or more and less than 50%. However, in the sport mode, for example, the battery sharing ratio is A% (where A is greater than 0 and less than 50) and less than B% (where B is greater than A and less than 50). The driving mode associated with the range may be used. That is, the relationship between the sport mode shown in FIG. 3A and the sharing ratio of the battery 31 and the capacitor 32 is merely an example.

  Similarly, FIG. 3A shows an example in which the eco mode is a traveling mode in which the battery sharing ratio is greater than 50% and associated with a range of 100% or less. However, in the eco mode, for example, the share of the battery is C% (where C is greater than 50 and less than 100) and less than D% (where D is greater than C and less than 100). The driving mode associated with the range may be used. That is, the relationship between the eco mode shown in FIG. 3A and the sharing ratio of the battery 31 and the capacitor 32 is merely an example.

  Similarly, FIG. 3B and FIG. 3C described below merely show an example of the relationship between the sport mode and the eco mode and the sharing ratio of the battery 31 and the capacitor 32.

  Alternatively, for example, the sport mode and the eco mode may be distinguished according to the magnitude relationship between the sharing ratio of the battery 31 (that is, the sharing ratio of the battery output power) and a predetermined mode threshold.

  Specifically, for example, in the sport mode, as shown in FIG. 3B, the share ratio of the battery 31 is more than a predetermined mode threshold value (10% in the example shown in FIG. 3B) during regeneration. It may be a traveling mode in which the motor becomes larger. Therefore, in this case, the ECU 40 may determine the sharing ratio of the battery 31 and the capacitor 32 so that the sharing ratio of the battery 31 is larger than the mode threshold value. Specifically, for example, as shown at point S1 in FIG. 3B, the ECU 40 sets the battery 31 and the capacitor so that the sharing ratio of the battery 31 is 30% and the sharing ratio of the capacitor 32 is 70%. You may determine the share ratio of 32. In this case, 30% of the regenerative power generated by the regeneration (that is, substantially the required input power) is input to the battery 31 as the battery input power, and 70% of the regenerative power is the capacitor input power. To the capacitor 32. Alternatively, for example, as indicated by point S2 in FIG. 3B, the ECU 40 shares the battery 31 and the capacitor 32 so that the sharing ratio of the battery 31 is 20% and the sharing ratio of the capacitor 32 is 80%. The proportion may be determined. In this case, 20% of the regenerative power is input to the battery 31 as battery input power, and 80% of the regenerative power is input to the capacitor 32 as capacitor input power.

  On the other hand, for example, in the eco mode, as shown in FIG. 3B, the share ratio of the battery 31 is larger than a predetermined mode threshold (10% in the example shown in FIG. 3B) during regeneration. It may be a running mode. Therefore, in this case, the ECU 40 may determine the sharing ratio of the battery 31 and the capacitor 32 so that the sharing ratio of the battery 31 is larger than the mode threshold value. Specifically, for example, as indicated by point E1 in FIG. 3B, the ECU 40 sets the battery 31 and the capacitor so that the sharing ratio of the battery 31 is 0% and the sharing ratio of the capacitor 32 is 100%. You may determine the share ratio of 32. In this case, all of the regenerative power is input to the capacitor 32 as capacitor input power. Alternatively, for example, as indicated by point E2 in FIG. 3B, the ECU 40 shares the battery 31 and the capacitor 32 so that the sharing ratio of the battery 31 is 5% and the sharing ratio of the capacitor 32 is 95%. The proportion may be determined. In this case, 5% of the regenerative power is input to the battery 31 as battery input power, and 95% of the regenerative power is input to the capacitor 32 as capacitor input power.

  FIG. 3B shows an example in which the sport mode and the eco mode are distinguished based on the magnitude relationship between the share ratio of the battery 31 at the time of regeneration and a predetermined mode threshold value. However, in addition to or instead of the magnitude relationship between the share ratio of the battery 31 at the time of regeneration and the predetermined mode threshold value, the sport mode and the eco mode are set according to the magnitude relation between the share ratio of the battery 31 at the time of power running and the predetermined mode threshold value. Needless to say, they can be distinguished. That is, the sport mode may be a travel mode in which the sharing ratio of the battery 31 is greater than a predetermined mode threshold value during power running. Similarly, the eco mode may be a travel mode in which the sharing ratio of the battery 31 is smaller than a predetermined mode threshold during power running.

  At this time, the predetermined mode threshold is determined by taking into consideration the correlation between the characteristics required for the vehicle and the sharing ratio of the battery 31 and the capacitor 32, and the sport mode and the eco mode, each of which can satisfy different characteristics. It is preferable to set to an arbitrarily distinguishable value.

  Or if it says only at the time of regeneration, for example, sport mode and eco mode may not necessarily be distinguished. For example, as shown in FIG. 3C, the sharing ratio of the battery 31 and the capacitor 32 may be fixed. In the example shown in FIG. 3C, the sharing ratio of the battery 31 is fixed to 10% and the sharing ratio of the capacitor 32 is 90% regardless of whether the sport mode or the eco mode is selected. It is fixed to. Even in this case, it is sufficient that the sport mode and the eco mode can be distinguished at least by the sharing ratio of the battery 31 and the capacitor 32 during power running.

  Thus, ECU40 can change suitably the share ratio of the battery 31 and the capacitor 32 by selecting driving mode. That is, the ECU 40 can appropriately change the sharing ratio of the battery 31 and the capacitor 32 according to the characteristics required for the vehicle.

  At this time, the ECU 40 may further finely adjust (in other words, change) the share ratio of the battery 31 and the capacitor 32 within a range corresponding to the selected travel mode. For example, the ECU 40 sets the sharing ratio of the battery 31 and the capacitor 32 so as to obtain an appropriate (or optimal) sharing ratio that can satisfy the characteristics required for the vehicle 1 within a range corresponding to the selected travel mode. Fine adjustment (in other words, it may be changed). The characteristics referred to here are not only characteristics related to the selection of the driving mode in step S10 in FIG. 2 (that is, characteristics that place importance on fuel efficiency or driving performance), but also characteristics that have some relationship with the driving of the vehicle 1. (For example, a characteristic of satisfying the required power, a characteristic of realizing a stable traveling of the vehicle 1 and the like) may be included.

  For example, the case where the sport mode distinguished by the sharing ratio shown in FIG. 3A is selected will be described as an example.

  In this case, the ECU 40 determines the importance of the fuel efficiency within the range of the sport mode in which the driving performance is important (in the example shown in FIG. 3A, the range in which the share of the battery 31 is 50% to 100%). Accordingly, the sharing ratio between the battery 31 and the capacitor 32 may be finely adjusted. For example, the ECU 40 reduces the sharing ratio of the battery 31 as the importance of fuel efficiency increases within the range of the sport mode (that is, the white circle point indicating the sharing ratio shifts to the right in FIG. 3A). As described above, the sharing ratio between the battery 31 and the capacitor 32 may be finely adjusted.

  Alternatively, when the required power cannot be satisfied with the current sharing ratio, the ECU 40 shares the battery 31 and the capacitor 32 so that the required power can be satisfied within the range of the sport mode. May be finely adjusted. Specifically, for example, considering that the capacitor 32 can input and output capacitor power relatively rapidly, the required power fluctuates rapidly in response to rapid acceleration or rapid deceleration of the vehicle 1. In this case, it is preferable to cope with a sudden change in the required power by temporarily using the capacitor power input / output by the capacitor 32. Therefore, the ECU 40 may finely adjust the sharing ratio of the battery 31 and the capacitor 32 so that the capacitor 32 inputs and outputs the capacitor power corresponding to the rapid fluctuation of the required power.

  Alternatively, as described in detail later, in order to satisfy the running performance, it is preferable to effectively use the capacitor power input and output by the capacitor 32. In this case, it is considered preferable to prevent the capacitor 32 from being depleted when emphasizing traveling performance. Therefore, the ECU 40 may finely adjust the sharing ratio of the battery 31 and the capacitor 32 so as to prevent the capacitor 32 from being depleted as much as possible within the range of the sport mode.

  Selection of such driving modes (that is, sports mode and eco mode) and adjustment of the sharing ratio of the battery 31 and the capacitor 32 within the range corresponding to the selected driving mode are performed while the vehicle 1 is driving. This is performed at any time according to the flowchart shown in FIG. Therefore, when the characteristics required for the vehicle 1 change, the ECU 40 can change the sharing ratio of the battery 31 and the capacitor 32 so as to follow the change in the characteristics.

  Thus, the ECU 40 can appropriately change the sharing ratio between the battery 31 and the capacitor 32. In other words, in this embodiment, the sharing ratio of the battery 31 and the capacitor 32 may not always be fixed to the same sharing ratio. Therefore, whenever the characteristics required for the vehicle 1 change, the ECU 40 sets the sharing ratio of the battery 31 and the capacitor 32 to an appropriate (or optimal) sharing ratio according to the change in the characteristics. Can do. As a result, the ECU 40 can appropriately use the battery 31 and the capacitor 32 according to the sharing ratio determined as a result of the selection of the driving mode and the adjustment within the range corresponding to the selected driving mode. Therefore, the ECU 40 can properly use the battery 31 and the capacitor 32 appropriately so as to realize a plurality of different characteristics.

  Specifically, when the sports mode is selected during power running, the sharing ratio of the battery 31 is relatively large compared to the case where the eco mode is selected, while the sharing ratio of the capacitor 32 is Relatively small. In this case, the capacitor output power that the capacitor 32 should output is relatively small, and therefore the capacitor 32 is not easily depleted. In other words, when the sport mode is selected, depletion of the capacitor 32 is suppressed as compared to the case where the eco mode is selected. As a result, the capacity of the capacitor 32 can be relatively reduced. Accordingly, the cost and size of the capacitor 32 can be reduced. Furthermore, when a large required output power is temporarily required to satisfy the running performance (for example, acceleration with a relatively large acceleration), the capacitor 32 temporarily outputs the capacitor output power. Therefore, it is preferable that the required output power is satisfied (that is, the battery output power output from the battery 31 is supported). Then, when the depletion of the capacitor 32 is suppressed, the capacitor 32 easily outputs the capacitor output power in order to satisfy such running performance. In other words, it is difficult for the capacitor 32 to output the capacitor output power at the timing at which the capacitor 32 should temporarily output the capacitor output power in order to satisfy the required output power. As a result, it is possible to satisfy characteristics that place importance on running performance for a longer time.

  Similarly, when the eco mode is selected during power running, the sharing ratio of the battery 31 is relatively small compared to the case where the sports mode is selected, while the sharing ratio of the capacitor 32 is relatively Become bigger. Here, due to the characteristics of the capacitor 32, the input / output efficiency of the capacitor power in the capacitor 32 is generally better than the input / output efficiency of the battery power in the battery 31. For this reason, the fuel consumption performance of the vehicle 1 improves as the sharing ratio of the capacitor 32 increases (in other words, as the sharing ratio of the battery 31 decreases). That is, when the eco mode is selected, the fuel efficiency of the vehicle 1 is improved as compared with the case where the sport mode is selected.

  Alternatively, during regeneration, the sharing ratio of the battery 31 is relatively small, while the sharing ratio of the capacitor 32 is relatively large. Therefore, the regenerative power generated by regeneration by the motor generator 10 is preferentially input (that is, charged) to the capacitor 32. As a result, the capacitor 32 is not easily depleted. Therefore, even if the sharing ratio of the capacitor 32 becomes relatively large by selecting the eco mode at the time of power running, the capacitor 32 is preferentially charged at the time of regeneration, so the capacitor output with a relatively large sharing ratio. Electric power can be output. Alternatively, even if the sports mode is selected during power running, the capacitor 32 is preferentially charged during regeneration, so the capacitor 32 outputs the capacitor output power at the timing at which the capacitor 32 should temporarily output the capacitor output power. A situation in which output cannot be performed is less likely to occur. Thus, in the present embodiment, during regeneration, the capacitor 32 is preferentially charged in preparation for traveling of the vehicle 1 during power running.

  Furthermore, as described above, even when the sports mode is selected, the ECU 40 may appropriately change the sharing ratio of the battery 31 and the capacitor 32 in accordance with the importance level of the fuel efficiency performance or the like. . As a result, the vehicle 1 can travel so that the fuel efficiency is appropriately emphasized while the traveling performance is most important. Similarly, as described above, even when the eco mode is selected, the ECU 40 may appropriately change the sharing ratio of the battery 31 and the capacitor 32 in accordance with the importance level of the running performance. . As a result, the vehicle 1 can travel so that the fuel efficiency is most important and the traveling performance is also important.

  As described above, according to the present embodiment, a very beneficial effect in practice that the battery 31 and the capacitor 32 can be used appropriately in a flexible manner so as to realize compatibility between a plurality of different characteristics can be enjoyed.

  Further, in addition to or instead of the sport mode and the eco mode, any travel mode to which an appropriate sharing ratio is assigned according to the characteristics required for the vehicle may be defined. Even in this case, if a desired travel mode is selected according to the characteristics required of the vehicle as described above, the battery 31 is configured so as to realize the above-described various effects (particularly, compatibility between a plurality of different characteristics). And the effect that the capacitor 32 can be used appropriately in an appropriate manner).

  In the above description, the ECU 40 selects the travel mode according to the characteristics required for the vehicle. However, in addition to or instead of selecting the travel mode, the ECU 40 may directly determine (or adjust) the sharing ratio of the battery 31 and the capacitor 32 according to characteristics required for the vehicle. Even in this case, the various effects described above (particularly, the effect that the battery 31 and the capacitor 32 are appropriately used in a flexible manner so as to realize compatibility between a plurality of different characteristics) can be suitably enjoyed.

  The performance of the battery 31 depends on the temperature of the battery 31 (that is, the current temperature). Specifically, as shown in FIG. 5A, when the temperature of the battery 31 is near the rated limit temperature (that is, the allowable lower limit temperature or the allowable upper limit temperature) determined by the specifications of the battery 31, the battery 31 The performance becomes worse as the difference between the temperature of the battery 31 and the rated limit temperature becomes smaller. That is, when the temperature of the battery 31 is near the rated limit temperature, the battery 31 may not be able to perform a stable operation or an intended operation as the difference between the temperature of the battery 31 and the rated limit temperature becomes smaller. Increases nature.

  Similarly, the performance of the capacitor 32 also depends on the temperature of the capacitor 32. Specifically, as shown in FIG. 5B, when the temperature of the capacitor 32 is near the rated limit value (that is, the allowable lower limit temperature or the allowable upper limit temperature) determined by the specifications of the capacitor 32, the capacitor 32 The performance becomes worse as the difference between the temperature of the capacitor 32 and the rated limit temperature becomes smaller. That is, when the temperature of the capacitor 32 is in the vicinity of the rated limit temperature, the capacitor 32 cannot perform a stable operation or an intended operation as the difference between the temperature of the capacitor 32 and the rated limit temperature becomes smaller. Increases nature.

  Here, when at least one of the battery 31 and the capacitor 32 cannot perform a stable operation or an intended operation, even if the sports mode is selected, the characteristic that attaches importance to running performance is satisfied. You may not be able to. Therefore, in the present embodiment, the ECU 40 may prohibit the selection of the sport mode when at least one of the battery 31 and the capacitor 32 cannot perform a stable operation or an intended operation.

  Specifically, for example, when the difference between the temperature of the battery 31 and the allowable lower limit temperature is smaller than the predetermined threshold th21, the ECU 40 cannot perform a stable operation or an intended operation. You may judge. Similarly, the ECU 40 determines that the battery 31 cannot perform a stable operation or an intended operation when the difference between the temperature of the battery 31 and the allowable upper limit temperature is smaller than the predetermined threshold th22. Good. Similarly, when the difference between the temperature of the capacitor 32 and the allowable lower limit temperature is smaller than the predetermined threshold th23, the ECU 40 determines that the capacitor 32 cannot perform a stable operation or an intended operation. Good. Similarly, when the difference between the temperature of the capacitor 32 and the allowable upper limit temperature is smaller than the predetermined threshold th24, the ECU 40 determines that the capacitor 32 cannot perform a stable operation or an intended operation. Good. Therefore, when these determinations are made, the ECU 40 may prohibit the selection of the sport mode.

  The predetermined threshold th21 to the predetermined threshold th22 take into consideration the specifications of the battery 31, and the battery power sufficient to satisfy the traveling performance and the state in which the battery 31 can perform input / output of the battery power sufficient to satisfy the traveling performance. Is preferably set to an arbitrary value that can be appropriately distinguished from a state in which the battery 31 cannot perform input / output.

  Similarly, the predetermined threshold value th23 to the predetermined threshold value th24 take into account the specifications of the capacitor 32, and the capacitor 32 can perform input / output of capacitor power sufficient to satisfy the traveling performance and the capacitor sufficient to satisfy the traveling performance. It is preferably set to an arbitrary value that can be appropriately distinguished from a state in which the capacitor 32 cannot input and output power.

(3) Modification Example of Changing Operation of Battery / Capacitor Sharing Ratio Next, referring to FIGS. 6 and 7, the control operation of the vehicle 1 of the present embodiment (substantially the control operation of the power supply system 30). Yes, a modification of the sharing ratio of the battery 31 and the capacitor 32) will be described.

(3-1) First Modification First , referring to FIG. 6, the control operation of the vehicle 1 of the present embodiment (substantially the control operation of the power supply system 30, and the sharing of the battery 31 and the capacitor 32. A first modification of the ratio changing operation) will be described. FIG. 6 is a graph showing an adjustment operation of the sharing ratio between the battery 31 and the capacitor 32 according to the SOC (State Of Charge) of the capacitor 32.

  In the first modification, the ECU 40 additionally adjusts the sharing ratio of the battery 31 and the capacitor 32 according to the SOC of the capacitor 32 (that is, the current SOC).

  Specifically, as shown in FIG. 6A, during regeneration, the ECU 40 corresponds to the SOC of the capacitor 32 and the rated limit value of the SOC (specifically, the upper limit value that the SOC of the capacitor 32 can take). It is preferable to adjust the sharing ratio of the battery 31 and the capacitor 32 so that the sharing ratio of the capacitor 32 decreases as the difference from the upper limit SOC) decreases. At this time, when the difference between the SOC of the capacitor 32 and the upper limit SOC is smaller than the predetermined threshold th25, the ECU 40 shares the battery 31 and the capacitor 32 according to the difference between the SOC of the capacitor 32 and the upper limit SOC. It is preferable to adjust the ratio. As a result, as shown in FIG. 6B, the share ratio of the capacitor 32 becomes smaller and the share ratio of the battery 31 becomes larger than before the adjustment.

  Here, as shown in FIG. 6B, for example, by selecting the above-described eco mode, the share of the battery 31 is determined to be 0% (or a value in the vicinity of 0%) and the capacitor A situation is assumed in which the sharing ratio of 32 is determined to be 100% (or a value in the vicinity of 100%). In this situation, it is estimated that the smaller the difference between the SOC of the capacitor 32 and the upper limit SOC, the smaller the remaining capacity for charging the capacitor 32 (that is, the input of the capacitor input power). Therefore, in this case, regenerative power that cannot be input (charged) to the capacitor 32 is input to the battery 31 by adjusting the sharing ratio of the battery 31 and the capacitor 32 according to the difference between the SOC of the capacitor 32 and the upper limit SOC. Will be. Therefore, since it is possible to suppress the loss of regenerative power, an improvement in fuel efficiency is realized.

  Alternatively, as shown in FIG. 6C, during power running, the ECU 40 determines the difference between the SOC of the capacitor 32 and the rated limit value of the SOC (that is, the lower limit SOC corresponding to the lower limit value that the SOC of the capacitor 32 can take). It is preferable to adjust the sharing ratio of the battery 31 and the capacitor 32 so that the sharing ratio of the capacitor 32 becomes smaller as the value becomes smaller. At this time, when the difference between the SOC of the capacitor 32 and the lower limit SOC is smaller than the predetermined threshold th26, the ECU 40 shares the battery 31 and the capacitor 32 according to the difference between the SOC of the capacitor 32 and the lower limit SOC. It is preferable to adjust the ratio. As a result, as shown in FIG. 6D, the sharing ratio of the capacitor 32 becomes smaller and the sharing ratio of the battery 31 becomes larger than before the adjustment.

  Here, as shown in FIG. 6D, for example, by selecting the above-described eco mode, the share of the battery 31 is determined to be 0% (or a value in the vicinity of 0%) and the capacitor A situation is assumed in which the sharing ratio of 32 is determined to be 100% (or a value in the vicinity of 100%). In this situation, it is estimated that the smaller the difference between the SOC of the capacitor 32 and the lower limit SOC, the easier the capacitor 32 is depleted. Therefore, in this case, the depletion of the capacitor 32 is suppressed by adjusting the sharing ratio of the battery 31 and the capacitor 32 according to the difference between the SOC of the capacitor 32 and the lower limit SOC.

  FIG. 6 illustrates an operation of adjusting the sharing ratio between the battery 31 and the capacitor 32 in accordance with the SOC of the capacitor 32. However, the ECU 40 adjusts the sharing ratio of the battery 31 and the capacitor 32 according to the SOC of the battery 31 in addition to or instead of adjusting the sharing ratio of the battery 31 and the capacitor 32 according to the SOC of the capacitor 32. Also good. That is, the ECU 40 adjusts the sharing ratio of the battery 31 and the capacitor 32 according to the SOC of the battery 31 in the same manner as the operation of adjusting the sharing ratio of the battery 31 and the capacitor 32 according to the SOC of the capacitor 32. Good.

(2-2) Second Modification Subsequently, referring to FIG. 7, the control operation of the vehicle 1 of the present embodiment (substantially the control operation of the power supply system 30, sharing of the battery 31 and the capacitor 32). A second modification of the ratio changing operation) will be described. FIG. 7 is a graph showing the adjustment operation of the sharing ratio between the battery 31 and the capacitor 32 according to the temperature of the battery 31.

  In the second modification, the ECU 40 additionally adjusts the sharing ratio of the battery 31 and the capacitor 32 according to the temperature of the battery 31 (that is, the current temperature).

  Specifically, as shown in FIG. 7A, the ECU 40 shares the battery 31 as the difference between the current temperature of the battery 31 and the rated limit value (that is, the allowable lower limit temperature or the allowable upper limit value) decreases. It is preferable to adjust the sharing ratio of the battery 31 and the capacitor 32 so as to be small. At this time, the ECU 40 preferably adjusts the sharing ratio of the battery 31 and the capacitor 32 according to the temperature of the battery 31 when the difference between the temperature of the battery 31 and the allowable lower limit value is smaller than the predetermined threshold th27. . Alternatively, the ECU 40 preferably adjusts the sharing ratio between the battery 31 and the capacitor 32 according to the temperature of the battery 31 when the difference between the temperature of the battery 31 and the allowable upper limit value is smaller than the predetermined threshold th28. As a result, as shown in FIGS. 7B and 7C, the sharing ratio of the battery 31 is reduced and the sharing ratio of the capacitor 32 is increased as compared to before adjustment.

  Here, as shown in FIG. 7B, for example, by selecting the above-described sports mode, the sharing ratio of the battery 31 during powering is determined to be 100% (or a value in the vicinity of 100%). In addition, it is assumed that the sharing ratio of the capacitor 32 during power running is determined to be 0% (or a value in the vicinity of 0%). Under this circumstance, the smaller the difference between the temperature of the battery 31 and the rated limit value, the higher the possibility that the battery 31 cannot perform a stable operation or an intended operation. That is, there is a high possibility that the required output power cannot be satisfied by the battery output power output from the battery 31. Therefore, in this case, the capacitor 32 compensates for the shortage of the battery output power output by the battery 31 by adjusting the sharing ratio between the battery 31 and the capacitor 32 according to the difference between the temperature of the battery 31 and the rated limit value. be able to. Accordingly, even when the temperature of the battery 31 is in the vicinity of the rated limit value, the vehicle 1 can be stably driven.

  Similarly, as shown in FIG. 7C, for example, when the above-described sports mode is selected, the sharing ratio of the battery 31 at the time of regeneration is determined to be 30% (or a value in the vicinity of 30%). In addition, a state is assumed in which the share ratio of the capacitor 32 during regeneration is determined to be 70% (or a value in the vicinity of 70%). Under this circumstance, the smaller the difference between the temperature of the battery 31 and the rated limit value, the higher the possibility that the battery 31 cannot perform a stable operation or an intended operation. That is, there is a high possibility that regenerative power cannot be input to the battery 31. Therefore, in this case, an excess of regenerative power that cannot be input to the battery 31 is input to the capacitor 32 by adjusting the sharing ratio of the battery 31 and the capacitor 32 according to the difference between the temperature of the battery 31 and the rated limit value. be able to. Therefore, even when the temperature of the battery 31 is in the vicinity of the rated limit value, it is possible to suppress the loss of regenerative electric power, and thus an improvement in fuel consumption is realized.

  FIG. 7 illustrates an operation of adjusting the sharing ratio between the battery 31 and the capacitor 32 according to the temperature of the battery 31. However, the ECU 40 adjusts the sharing ratio of the battery 31 and the capacitor 32 according to the temperature of the capacitor 32 in addition to or instead of adjusting the sharing ratio of the battery 31 and the capacitor 32 according to the temperature of the battery 31. Also good. That is, the ECU 40 adjusts the sharing ratio of the battery 31 and the capacitor 32 according to the temperature of the capacitor 32 in the same manner as the operation of adjusting the sharing ratio of the battery 31 and the capacitor 32 according to the temperature of the battery 31. Good.

  It should be noted that the present invention can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification, and a power supply control device that includes such a change is also included in the technical concept of the present invention. included.

DESCRIPTION OF SYMBOLS 1 Vehicle 10 Motor generator 21 Axle 22 Wheel 30 Power supply system 31 Battery 32 Capacitor 33 Power converter 34 Smoothing capacitor 35 Inverter 40 ECU

Claims (16)

Driving using a power supply system including both a first power source that inputs and outputs a first power and a second power source that inputs and outputs a second power and has a capacity smaller than that of the first power source but with a large output A power supply control device for controlling a vehicle,
Selecting means for selecting a desired driving mode according to characteristics required for the vehicle from a plurality of driving modes in which the share of the first power with respect to the required power required for the power supply system is different;
A power source comprising: control means for controlling the first power source and the second power source so as to input and output the first power and the second power according to a sharing ratio corresponding to the desired travel mode. Control device. The plurality of travel modes include: (i) a first travel mode in which the share of the first power is smaller than a first threshold; and (ii) a second in which the share of the first power is greater than the first threshold. The power supply control device according to claim 1, further comprising: a travel mode. The plurality of travel modes include: (i) a first travel mode in which a sharing ratio of the first power is smaller than a sharing ratio of the second power with respect to the required power; and (ii) a sharing ratio of the first power. The power supply control device according to claim 1, further comprising: a second traveling mode that is greater than a share of the second power. When the characteristic required for the vehicle is a characteristic in which fuel efficiency is more important than driving performance, the selection means selects the first driving mode,
The said selection means selects the said 2nd driving mode when the characteristic requested | required of the said vehicle attaches importance to driving | running | working performance rather than fuel consumption performance, The said 2nd driving mode is characterized by the above-mentioned. Power control device. When a difference between a current characteristic value of at least one of the first power supply and the second power supply and a rated limit value of at least one of the first power supply and the second power supply is smaller than a second threshold value. The selection means does not select the second driving mode even if the characteristic required for the vehicle is a characteristic that emphasizes the driving performance rather than the fuel consumption performance. The power supply control device described. The control means is responsive to a difference between a current characteristic value of at least one of the first power source and the second power source and a rated limit value of at least one of the first power source and the second power source. The power supply control device according to any one of claims 1 to 5, wherein a share ratio of the first power is adjusted. The said control means reduces the share ratio of the said 1st electric power, so that the difference between the present characteristic value of the said 1st power supply and the rated limit value of the said 1st power supply becomes small. Power supply control device. The control means increases the share of the first power as the difference between the current characteristic value of the second power source and the rated limit value of the second power source becomes smaller. The power supply control device described in 1. Driving using a power supply system including both a first power source that inputs and outputs a first power and a second power source that inputs and outputs a second power and has a capacity smaller than that of the first power source but with a large output A power supply control device for controlling a vehicle,
Adjusting means for dynamically adjusting a share ratio of the first electric power with respect to the required electric power required for the power supply system according to characteristics required for the vehicle;
Control means for controlling the first power source and the second power source so as to input and output the first power and the second power according to the sharing ratio adjusted by the adjusting means. apparatus. (I) When the characteristic required for the vehicle is a characteristic in which fuel efficiency is more important than driving performance, the adjustment unit is configured so that the share of the first power is smaller than a first threshold. (Ii) when the characteristic required for the vehicle is a characteristic that emphasizes driving performance rather than fuel efficiency, the first electric power sharing ratio is greater than the first threshold value. The power supply control apparatus according to claim 9, wherein the share ratio of the first power is adjusted so that the power consumption increases. (I) When the characteristic required for the vehicle is a characteristic in which the fuel efficiency is more important than the driving performance, the sharing ratio of the first power is a ratio of the second power to the required power. (Ii) When the characteristic required for the vehicle is a characteristic that places more emphasis on driving performance than fuel efficiency, the first electric power is adjusted so as to be smaller than the shared ratio. The power supply control apparatus according to claim 9, wherein the share ratio of the first power is adjusted such that the share ratio of the first power is larger than the share ratio of the second power. When a difference between a current characteristic value of at least one of the first power supply and the second power supply and a rated limit value of at least one of the first power supply and the second power supply is smaller than a second threshold value. Even if the characteristic required for the vehicle is a characteristic in which the driving performance is more important than the fuel efficiency, the adjusting means is configured such that the share of the first electric power is greater than the first threshold. The power supply control apparatus according to claim 10, wherein the share ratio of the first power is not adjusted. When a difference between a current characteristic value of at least one of the first power supply and the second power supply and a rated limit value of at least one of the first power supply and the second power supply is smaller than a second threshold value. Even if the characteristic required for the vehicle is a characteristic in which driving performance is more important than fuel consumption performance, the adjusting means is configured such that the sharing ratio of the first power is higher than the sharing ratio of the second power. The power supply control device according to claim 11, wherein the sharing ratio of the first power is not adjusted so as to increase. The adjusting means is responsive to a difference between a current characteristic value of at least one of the first power source and the second power source and a rated limit value of at least one of the first power source and the second power source. The power supply control device according to any one of claims 9 to 13, further adjusting a share ratio of the first power. The said adjustment means reduces the share ratio of the said 1st electric power, so that the difference between the present characteristic value of the said 1st power supply and the rated limit value of the said 1st power supply becomes small. Power supply control device. The adjustment unit increases the sharing ratio of the first power as a difference between a current characteristic value of the second power source and a rated limit value of the second power source becomes smaller. The power supply control device described in 1.

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