JP4952506B2 - Vehicle drive control device - Google Patents

Description

  The present invention relates to a vehicle drive control device, and more particularly to a drive control device for a vehicle equipped with a rotating electrical machine.

  As a vehicle using a rotating electric machine as a drive source, there are a hybrid vehicle, a fuel cell mounted vehicle, and the like. When the vehicle is driven by the rotating electrical machine, the rotating electrical machine generates heat, so a cooling device is used, and in some cases, the output of the rotating electrical machine is limited.

  For example, Patent Document 1 discloses a hybrid vehicle having a configuration in which an engine is connected to a carrier of a planetary gear set, a motor / generator mainly used for a generator and a starter is connected to a sun gear, and a motor / generator mainly functioning as a motor is connected to a ring gear. In the control device, it is disclosed that when the temperature of any drive element exceeds an upper limit value by the temperature detection means, the operating point of the drive element is changed to a side that suppresses the temperature rise.

JP 2005-83300 A

  When the rotating electrical machine generates heat, even if the load is the same, the temperature rise varies depending on the heat capacity. In addition, the temperature rise varies depending on the magnitude of the load even between rotating electric machines having the same heat capacity.

  For example, even when climbing the same slope, the temperature rise differs between a vehicle equipped with a rotating electrical machine with a large heat capacity and a vehicle equipped with a rotating electrical machine with a small heat capacity.

  Further, for example, even when a plurality of rotating electrical machines are mounted on a vehicle, the temperature rise of each rotating electrical machine varies depending on the difference in heat capacity of these rotating electrical machines.

  If the temperature rise differs due to differences in the heat capacity or load characteristics of the rotating electrical machine, different cooling devices are provided according to this, or the output of the rotating electrical machine is limited, leading to an increase in cost.

  The objective of this invention is providing the vehicle drive control apparatus which can suppress that the difference in a temperature rise arises by the difference in the characteristic of a rotary electric machine.

A vehicle drive control device according to the present invention is a drive control device for a vehicle including one or more rotating electrical machines, and setting of output responsiveness that is a rising characteristic of torque output for the rotating electrical machine with respect to a torque command for the rotating electrical machine. Is performed based on a combination of the mass of the vehicle on which the rotating electrical machine is mounted and the heat capacities of a plurality of types of rotating electrical machines that are determined in advance .

In addition, the vehicle drive control device according to the present invention, the output response of the configuration, between the same vehicle mass, slower than the output responsiveness of the rotating electrical machine often the output response of the low heat capacity rotary electric machine thermal capacity It is preferable to do. In the vehicle drive control device according to the present invention, the output responsiveness is set between the rotating electrical machines having the same heat capacity and the output responsiveness of the rotating electrical machine mounted on the vehicle having a large mass is mounted on the vehicle having a small mass. It is preferable to make it slower than the output response of the rotating electrical machine.

In the vehicle drive control device according to the present invention, in addition to the rotary electric machine, the vehicle further comprising an engine, an output response of the settings for rotary electric machine, the ratio of the maximum driving force of the rotary electric machine to the maximum driving force of the engine The larger the maximum driving force ratio is, the slower the output response is.

In the vehicle drive control apparatus according to the present invention, it is preferable that the output response setting is varied according to the accelerator opening corresponding to the torque command for the rotating electrical machine .

  In the vehicle drive control device according to the present invention, it is preferable that the output responsiveness is set slower as the accelerator opening is larger.

With the above configuration, the vehicle drive control device sets the output response indicating the response speed, which is the rising characteristic of the torque output for the rotating electrical machine with respect to the torque command for the rotating electrical machine, the mass of the vehicle on which the rotating electrical machine is mounted, Different values are set according to combinations with predetermined heat capacities of a plurality of types of rotating electrical machines . Since the rotating electrical machine generates heat according to the torque output, if the output response is large, the temperature rise due to the heat generation becomes faster, and if the output response is slow, the temperature rise can be delayed. Therefore, by changing the output responsiveness according to the combination of the heat capacity of the rotating electrical machine and the mass of the vehicle amount, it is possible to suppress a difference in temperature increase due to the difference in the heat capacity or mass of the rotating electrical machine.

In the vehicle drive control device, the output responsiveness is set based on the heat capacity of the rotating electrical machine and the mass of the vehicle. Between vehicles having the same vehicle mass, the output responsiveness of a rotating electrical machine having a small heat capacity is made slower than the output responsiveness of a rotating electrical machine having a large heat capacity. Between vehicles having the same heat capacity, the output responsiveness of a rotating electrical machine mounted on a vehicle having a large mass is made slower than the output responsiveness of a rotating electrical machine mounted on a vehicle having a small mass.

When the driving load is the same, the temperature of the rotating electric machine with a smaller heat capacity rises faster. In addition, even with a rotating electrical machine having the same heat capacity, a vehicle with a large vehicle mass has a greater traveling load on the rotating electrical machine and a faster temperature rise. Therefore, when the temperature rise is fast, the temperature rise can be delayed by slowing the output response. Thereby, the difference in the temperature rise by the difference in the heat capacity or mass of the rotating electrical machine can be suppressed.

Further, in the vehicle drive control device, in addition to the rotating electrical machine, for a vehicle further including an engine, the output responsiveness setting for the rotating electrical machine is set to a maximum drive that is a ratio of the maximum driving force of the rotating electrical machine to the maximum driving force of the engine. Based on force ratio. The larger the maximum driving force ratio, the slower the output response. A large maximum driving force ratio means that the ratio of the driving force of the rotating electrical machine to the total driving force is large, and the variation in the temperature rise of the rotating electrical machine is larger than when the maximum driving force ratio is small. Therefore, when the maximum driving force ratio has a large characteristic, variation in temperature rise can be suppressed by slowing the output response. Thereby, the difference in the temperature rise by the difference in the heat capacity or mass of the rotating electrical machine can be suppressed.

In the vehicle drive control device, the output response setting is varied according to the accelerator opening corresponding to the torque command for the rotating electrical machine . The greater the accelerator opening, the slower the output response. The larger the accelerator opening, the faster the temperature rise. Therefore, the output response can be delayed and the temperature rise can be delayed. Even if it does in this way, the difference in the temperature rise by the difference in the heat capacity or mass of a rotary electric machine can be suppressed.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. Hereinafter, a hybrid vehicle including an engine and a rotating electric machine will be described as the vehicle. However, any vehicle including a rotating electric machine may be used, and a vehicle without an engine, for example, a fuel cell vehicle may be used. Moreover, although the motor generator (M / G) mounted in a vehicle is demonstrated as a rotary electric machine, you may have a function as a motor only.

  FIG. 1 is a diagram showing a configuration of a vehicle drive control device 20 in a hybrid vehicle. Here, although not a component of the vehicle drive control device 20, an accelerator opening 4 as a torque command input means and a vehicle drive device 6 are shown. Here, the vehicle drive device 6 includes an engine 8 and a rotating electrical machine 10.

  The accelerator opening 4 means a means for inputting a torque command to the vehicle drive control device 20 as described above, and is, for example, the amount of depression of the accelerator pedal.

  The engine 8 in the drive device 6 is an internal combustion engine, and has functions of driving the driving wheels of the vehicle and driving the rotating electrical machine 10 to generate electric power based on the output. The rotating electrical machine 10 is a motor / generator (M / G) mounted on a vehicle, and is a three-phase synchronous rotating electrical machine that functions as a motor when electric power is supplied and functions as a generator during braking.

  Here, the rotating electrical machine 10 is shown as a rotating electrical machine unit. A rotating electrical machine unit is a product that has been standardized as much as possible and has been narrowed down to a small number of types of rotating electrical machines, since rotating electrical machines for various vehicles must be individually designed, so that it is necessary to prepare rotating electrical machines with multiple specifications. is there. For example, a rotating electrical machine can be unitized according to specifications, such as a rotating electrical machine unit for large vehicles, a rotating electrical machine unit for medium-sized vehicles, and a rotating electrical machine unit for small vehicles.

  The vehicle drive control device 20 includes an HVECU 30, an input unit 36 for inputting conditions for vehicle drive control, and the like, and a storage unit 40.

  As described above, the input unit 36 is data input means for inputting conditions and the like for vehicle drive control. In general, a keyboard, a switch, a button, or the like can be used as an input unit, but a data input terminal connected to an external data input device through a signal line is suitable as a vehicle drive control device 20 for mounting on a vehicle. The input unit 36 can be used. For example, an external PC (Personal Computer) is connected to a data transmission signal line, and serial data or the like is obtained from the input unit 36 using a PC keyboard or the like. Can be disconnected.

  The input data relates to the characteristics of the rotating electrical machine 10, the heat generation-temperature characteristics of the rotating electrical machine 10, the rotating electrical machine heat capacity, the load characteristics of the rotating electrical machine 10, the vehicle weight that is the mass of the vehicle, and the engine 8. A driving force characteristic of the rotating electrical machine 10 in the relationship is a maximum driving force ratio that is a ratio of the maximum driving force of the rotating electrical machine 10 to the maximum driving force of the engine 8 or the like.

  The storage unit 40 has a function of storing a control program of the HVECU 30 and the like, and particularly, here, a function of storing an output responsiveness map 42 indicating the relationship between the characteristics of the rotating electrical machine 10 and the output responsiveness of the rotating electrical machine 10. Have

  Here, the output responsiveness of the rotating electrical machine 10 is the response of the torque output of the rotating electrical machine 10 to the torque command given by the accelerator opening 4. In general, the torque output of the rotating electrical machine 10 is uniquely determined with respect to the torque command. Here, the responsiveness of the torque output to the torque command can be changed as in the case where the torque output is raised immediately in response to the torque command and the case where the torque output is slowly raised.

  The output responsiveness map 42 stored in the storage unit 40 indicates the output responsiveness applied depending on the difference in the characteristics of the rotating electrical machine 10. The output responsiveness map 42 stores the value related to the characteristic of the rotating electrical machine 10 as a search key, and the output responsiveness value corresponding to the value related to the characteristic is associated and stored. As the characteristics of the rotating electrical machine 10, as described above, the rotating electrical machine heat capacity as the heat generation-temperature characteristic of the rotating electrical machine 10, the vehicle weight that is the mass of the vehicle as the load characteristic of the rotating electrical machine 10, and the rotation in relation to the engine 8. The driving force characteristic of the electric machine 10 is a maximum driving force ratio that is a ratio of the maximum driving force of the rotating electric machine 10 to the maximum driving force of the engine 8. For example, a value of output responsiveness is stored in association with the value of the rotating electrical machine capacity as the temperature rise characteristic of the rotating electrical machine 10. Details of the relationship between the characteristics of the rotating electrical machine 10 and the output response will be described later.

  The HVECU 30 is an electric control unit (electric control unit) that controls the entire operation of the hybrid vehicle. The HVECU 30 can be classified into several ECUs according to its functions. In the example of FIG. 1, an engine ECU 32 that controls the operation of the engine 8 and an M / GECU 34 that controls the operation of the rotating electrical machine 10 are shown. . These ECUs can be configured by a control device, a computer, or the like suitable for mounting on a vehicle.

  When the HVECU 30 acquires the value of the accelerator opening 4 as a torque command, the HVECU 30 controls the driving device 6 of the vehicle so as to output an output torque corresponding to the magnitude of the accelerator opening 4. For example, when only the engine 8 is operating, the engine ECU 32 controls fuel injection or the like to the engine 8 and causes the engine 8 to output torque corresponding to the torque command. In a state where the engine 8 is not operating, the M / GECU 34 controls the drive current of the rotating electrical machine 10 and causes the rotating electrical machine 10 to output a torque corresponding to the torque command. When both the engine 8 and the rotating electrical machine 10 are operating, the engine 8 and the rotating electrical machine 10 are operated in cooperation with the engine ECU 32 and the M / GECU 34, and the torque corresponding to the torque command is output by both outputs. Is output.

  As described above, the M / GECU 34 has a function of controlling the rotary electric machine 10 using the accelerator opening 4 as a torque command and outputting a torque output corresponding to the torque command. The function of setting the output responsiveness value according to This function is executed by the output responsiveness setting module 35. These functions can be realized by software, and more specifically, by executing a rotating electrical machine output response setting program in the vehicle drive control program.

  The operation of the above configuration will be described in detail below with reference to FIGS. Below, it demonstrates using the code | symbol of FIG. First, how the temperature rise varies depending on the characteristics of the rotating electrical machine will be described, and then the relationship with the above configuration will be described. 2 and 3 are diagrams for explaining how the temperature rise of the rotating electrical machine 10 differs depending on the difference in the characteristics of the rotating electrical machine 10, and FIGS. 4 and 5 are diagrams for explaining how the output response is controlled. FIGS. 6 to 8 are diagrams showing how output responsiveness is controlled in consideration of the relationship between the engine and the rotating electrical machine.

  FIG. 2 shows a state in which four types of vehicles 60, 61, 62, and 63 climb the slope 50 having the same slope. The vehicle 60 includes a small electric vehicle (A) 52 having a light vehicle weight and a small electric capacity (S) 12 mounted on the rotating electric machine unit (S) 12. A rotating electrical machine unit (L) 14 having a large heat capacity is mounted. On the other hand, the vehicle 62 is a large vehicle (B) 54 with a heavy vehicle weight, on which the rotating electrical machine unit (S) 12 with a small heat capacity is mounted, and the vehicle 63 has a heat capacity on the large vehicle (B) 54. The large rotating electrical machine unit (L) 14 is mounted.

  As described above, when the four types of vehicles 60, 61, 62, and 63 having different heat capacities and vehicle weights of the rotating electric machines travel on the slope 50 having the same gradient, that is, under the same traveling load, the vehicles 60 and 61, respectively. , 62, 63, the state of the temperature rise of each rotating electrical machine is considerably different. That is, the temperature increase of the rotating electrical machine unit (S) 12 having a small heat capacity is faster than that of the rotating electrical machine unit (L) 14 having a large amount of heat. In addition, even if the heat capacity is the same, the temperature of the rotating electrical machine unit mounted on the large vehicle (B) 54 having a heavy vehicle weight is higher than that of the rotating electrical machine unit mounted on the small vehicle (A) 52 having a light vehicle weight. Is fast.

  FIG. 3 is a diagram showing how the temperature rise of the rotating electrical machine differs depending on the characteristics of the rotating electrical machine. The horizontal axis indicates the passage of time, the vertical axis indicates the temperature of the rotating electrical machine, and the large vehicle (B) has the rotating electrical machine unit. The case where (S) is mounted (B-S) and the case where the rotating electrical machine unit (L) is mounted on the small vehicle (A) are compared (AL). As shown in FIG. 3, the rotating electrical machine unit (S) with a small heat capacity mounted on the large vehicle (B) has a temperature higher than that of the rotating electrical machine unit (L) with a large heat capacity mounted on the small vehicle size (A). The rise is fast.

  As described above, the influence on the temperature rise of the rotating electrical machine is as described above, the vehicle weight being the rotating electrical machine heat capacity as the heat generation-temperature characteristic of the rotating electrical machine and the vehicle mass as the load characteristic of the rotating electrical machine 10. Etc. Of course, there are road conditions such as slopes of slopes. If these are referred to as the temperature rise characteristics of the rotating electrical machine or simply the characteristics of the rotating electrical machine, the temperature rise of the rotating electrical machine differs depending on the difference in the characteristics of the rotating electrical machine.

  If the temperature rise of the rotating electrical machine differs due to the difference in the characteristics of the rotating electrical machine, for example, when the rotating electrical machine unit is standardized and mounted on various vehicles, the temperature rise of the rotating electrical machine will be different. . In such a case, designing and arranging cooling systems individually one by one leads to an increase in cost.

  Therefore, the HVECU 30 sets the output responsiveness of the torque output with respect to the torque command to a different value depending on the temperature rise characteristic of the rotating electrical machine. That is, with respect to the rotating electrical machine in which the temperature rise is fast, control is performed to delay the response of the torque output to the torque command, thereby delaying the temperature rise of the rotating electrical machine.

  FIG. 4 is a diagram schematically showing this state. Here, as a torque command, the value of the accelerator opening 4 is taken on the horizontal axis, and the torque output of the rotating electrical machine 10 is taken on the vertical axis. That is, FIG. 4 shows an output response characteristic line indicating the response of the torque output to the torque command. In normal vehicle drive control, one output response characteristic line is used regardless of the temperature rise characteristic of the rotating electrical machine 10. Here, the gradient of the output response characteristic line is changed according to the difference in the temperature rise characteristic of the rotating electrical machine 10. When the example of FIG. 2 is used, the gradient of the output response characteristic line in the case of the rotating electrical machine unit (S) having a small heat capacity and the rotating electrical machine unit mounted on the vehicle (B) having a heavy vehicle weight is the rotating electrical machine unit having a large heat capacity. (L) It is set to be gentler than the gradient of the output response characteristic line in the case of the rotating electrical machine unit mounted on the light vehicle (A).

  FIG. 4 is a schematic diagram showing two output response characteristic lines, for example, an output response characteristic line of a rotating electrical machine unit mounted on a small vehicle (A) and an output of a rotating electrical machine unit (L) having a large heat capacity. Although the response characteristic lines have been described as being the same, of course, these output response characteristic lines may be different. Further, the gradient of the characteristic line varies depending on the detailed difference in vehicle weight, and the gradient of the characteristic line also varies depending on the detailed difference in heat capacity.

  4 is a map of the output response characteristic line of the rotating electrical machine using the temperature rise characteristic of the rotating electrical machine 10 as a parameter, and can be called an output response map. This is already shown in FIG. 1 is an output responsiveness map 42 stored in the storage unit 40.

  The slope of the output response characteristic line in FIG. 4 indicates the output response value of the torque output with respect to the torque command. The smaller the output response value, the slower the output response. When the output responsiveness is delayed, even if the same torque command is given, the torque output of the rotating electrical machine 10 reaches the target value with a delay, and accordingly, heat generation is delayed and the temperature rise is also delayed. In this way, with respect to the rotating electrical machine 10 in which the temperature rise becomes faster due to the difference in temperature rise characteristics of the rotating electrical machine 10, the temperature rise can be delayed by slowing the output response. As described above, by setting the output responsiveness value according to the characteristics of the rotating electrical machine 10, it is possible to suppress a difference in temperature increase due to the difference in the characteristics of the rotating electrical machine 10.

  In the above example, the output responsiveness of the rotating electrical machine unit (S) having a small heat capacity is set slower than the output responsiveness of the rotating electrical machine unit (L) having a large heat capacity, so that the heat capacity is small for the same torque command. The temperature increase of the rotating electrical machine unit (S) can be delayed to be the same as the temperature increase of the rotating electrical machine unit (L) having a large heat capacity. Similarly, the output responsiveness of the rotating electrical machine unit mounted on the large vehicle (B) that is a vehicle having a large mass is higher than the output responsiveness of the rotating electrical machine unit mounted on the small vehicle (A) that is a vehicle having a small mass. Since it is set later, the temperature rise of the rotating electrical machine unit mounted on the large vehicle (B) is delayed with respect to the same torque command, and the temperature rise of the rotating electrical machine unit mounted on the small vehicle (A) is the same. be able to.

  In this way, setting the output responsiveness of the torque output in response to the torque command to a different value according to the characteristics of the rotating electrical machine prevents the temperature rise of the rotating electrical machine from varying due to the difference in the characteristics of the rotating electrical machine. can do.

Returning to FIG. 1 again, the output responsiveness setting module 35 of the M / GECU 34 acquires data relating to the characteristics of the rotating electrical machine 10 from the input unit 36, and the output responsiveness stored in the storage unit 40 using the data as a search key. The map 42 has a function of reading a corresponding output response characteristic line. The read output responsiveness map 42 has the same content as that described with reference to FIG. 4. For example, if the heat capacity of the rotating electrical machine 10 obtained from the input unit 36 is S, the heat capacity = S is searched. As shown in FIG. 4, the solid output response characteristic line is read out. Then, the read output response characteristic line is set to the value of the output response of the rotating electrical machine 10 mounted on this vehicle, and the operation of the rotating electrical machine 10 is controlled.

  In the above example, the solid output response characteristic line of FIG. 4 is set, and according to this setting, the torque output is delayed from the broken output response characteristic line by the rotating electrical machine 10 according to the accelerator opening value. Is output. Thereby, the temperature rise of the rotary electric machine unit (S) with a small heat capacity can be made the same as the temperature rise of the rotary electric machine unit (L) with a large heat capacity having a broken output response characteristic line. Similarly, when the data inputted from the input unit 36 is a large vehicle (B), a solid output response characteristic line is set, and the temperature rise is a small vehicle (A) having a broken output response characteristic line. Can be the same.

  In FIG. 4, the value of the output response characteristic is the torque output gradient with respect to the accelerator opening, and this gradient value is set according to the characteristics of the rotating electrical machine 10. In addition to this, the setting of the output response can be varied according to the magnitude of the accelerator opening that is a torque command. FIG. 5 is a diagram showing how the output responsiveness is set.

  In FIG. 5, the horizontal axis represents time, and the vertical axis represents the torque output of the rotating electrical machine 10. The parameter is an accelerator opening, that is, a torque command. For example, when the accelerator opening is a large value, the torque output of the rotating electrical machine 10 rises quickly and the temperature rises quickly. On the other hand, when the accelerator opening is a small value, the temperature rise is slow. Therefore, when the accelerator opening is a large value, the rising speed of the torque output is slowed to delay the temperature rise, which can be the same as the temperature rise when the accelerator opening is small. FIG. 5 shows a state in which the rising speed of the torque output when the accelerator opening is 100% is delayed from the rising speed of the torque output when the accelerator opening is 50%. In this way, the output response is set according to the accelerator opening. Specifically, the larger the accelerator opening, the slower the output response, so that the rotating electrical machine is independent of the accelerator opening. Ten temperature rises can be the same.

  In the above description, it is assumed that only the rotating electrical machine contributes to driving of the vehicle. Next, a case where the driving force of the vehicle is supplied by both the engine and the rotating electric machine will be described with an example. Below, it demonstrates using the code | symbol of FIG. FIG. 6 shows the breakdown of the maximum driving force for the two types of driving devices D (X) and D (Y) with the driving force on the vertical axis.

  The driving device D (X) and the driving device D (Y) have the same maximum driving force of the engine, but the maximum driving force of the rotating electrical machine M / G (X) of the driving device D (X) is It is smaller than the maximum driving force of the rotating electrical machine M / G (Y) of the driving device D (Y). Here, if the ratio of the maximum driving force of the rotating electrical machine to the maximum driving force of the engine is called the maximum driving force ratio, the maximum driving force ratio of the driving device D (X) is the maximum driving force of the driving device D (Y). Smaller than power ratio.

  In the drive device 6 having an engine and a rotating electric machine, the maximum driving force ratio indicates the magnitude of the contribution of the rotating electric machine driving force to the engine driving force directly delivered from the engine. Therefore, the driving device having a larger maximum driving force ratio contributes more to the rotating electrical machine driving force in the maximum driving force. That the contribution of the rotating electrical machine driving force is large, the influence on the torque output of the driving device 6 is increased accordingly. That is, in terms of variations in torque output of the driving device 6 or variations in temperature, the driving device D (Y) having a large maximum driving force ratio is more than the driving device D (X) having a small maximum driving force ratio. The variation width becomes large.

  This is shown in FIGS. In these figures, the horizontal axis represents the accelerator opening as a torque command, and the vertical axis represents the torque output as the drive device 6. That is, the output response characteristic line of the entire drive device is shown in the same manner as described with reference to FIG. FIG. 7 is a diagram showing a state of the driving device D (X) having a small maximum driving force ratio, and FIG. 8 is a diagram showing a state of the driving device D (Y) having a large maximum driving force ratio.

  Here, the target of the output response characteristic line, the target of so-called accelerator work, and the variation width thereof are shown. Since the maximum driving force of the engine 8 is the same, the deviation from the accelerator work target tends to increase as the maximum driving force of the rotating electrical machine 10 increases. That is, the accelerator work has a larger variation from the target as the maximum driving force ratio is larger. When the variation range from the accelerator work target is increased, the variation range of the temperature rise as the drive device 6 is also increased.

  That is, the variation from the target value of the temperature rise of the driving device D (Y) having a large maximum driving force ratio is larger than the variation from the target value of the temperature rise of the driving device D (X) having a small maximum driving force ratio. . Therefore, the output response is set based on the maximum driving force ratio. Specifically, the output response is delayed as the maximum driving force ratio increases. By doing so, the variation from the target value of the temperature rise of the drive device D (Y) having a large maximum driving force ratio is changed from the target value of the temperature rise of the drive device D (X) having a small maximum driving force ratio. It can be the same as the variation.

  Thus, as a characteristic of the rotating electrical machine 10, by setting the output responsiveness according to the difference in the rotating electrical machine heat capacity, the vehicle weight, and the maximum driving force, the difference in temperature rise caused by these differences is suppressed. Can do. Accordingly, the temperature rise can be made the same between the rotating electrical machines having different temperature rise characteristics without providing a cooling device individually according to the difference in the characteristics of the rotating electrical machines, and an increase in cost can be suppressed. .

  As described above, by configuring the output response according to the characteristics of the rotating electrical machine 10, it is easy to standardize each element of the vehicle. For example, a standardized vehicle drive control device is provided with a plurality of standardized basic elements such as a vehicle body, and a standardized drive device 6 and a standardized cooling system mounted on the platform in accordance with vehicle specifications. 20 can be used. In this case, even if there is a difference in the characteristics of the rotating electrical machine 10 by setting the output response characteristics by inputting the platform type, the type of drive device, particularly the characteristics such as the heat capacity of the rotating electrical machine 10, the temperature rises. Can be the same.

  As described above, the setting of the output response characteristic is performed based on the data input of the characteristic of the rotating electrical machine 10 from the input unit 36 in the vehicle drive control device 20, and the vehicle drive executed by the vehicle drive control device 20 is performed. It is good also as incorporating in a control program beforehand.

  In the above description, the vehicle drive device has been described as including one rotating electrical machine. However, depending on the vehicle, a plurality of rotating electrical machines may be included. As an example, a rotating electric machine for driving front wheels and a rotating electric machine for driving rear wheels may be provided. In such a case, the heat capacities of the respective rotating electrical machines may be different, and if they are left as they are, a difference may occur in the temperature rise of each rotating electrical machine.

  Even in a vehicle equipped with such a plurality of rotating electrical machines, the temperature rise of each rotating electrical machine is made the same by setting the output responsiveness of each rotating electrical machine according to the characteristics such as the heat capacity of each rotating electrical machine. be able to. This makes it possible to standardize and standardize the cooling system for the rotating electrical machine.

It is a figure which shows the structure of the vehicle drive control apparatus of embodiment which concerns on this invention. It is a figure explaining the mode of vehicles from which the characteristic of a rotary electric machine is different. It is a figure explaining a mode that a difference arises in the temperature rise of a rotary electric machine by the difference in the characteristic of a rotary electric machine. In embodiment which concerns on this invention, it is a figure explaining a mode that output responsiveness is changed according to the characteristic of a rotary electric machine. In embodiment which concerns on this invention, it is a figure explaining a mode that output responsiveness is changed according to an accelerator opening. It is a figure explaining the maximum driving force ratio in the drive device containing an engine and a rotary electric machine. In embodiment which concerns on this invention, it is a figure explaining the magnitude | size of the dispersion | variation from the target of an accelerator work in case the maximum driving force ratio is small. In embodiment which concerns on this invention, it is a figure explaining the magnitude | size of the dispersion | variation from the target of an accelerator work in case the largest driving force ratio is large.

Explanation of symbols

  4 accelerator opening, 6 drive device, 8 engine, 10 rotating electrical machine, 12 rotating electrical machine unit (S), 14 rotating electrical machine unit (L), 20 vehicle drive control device, 30 HVECU, 32 engine ECU, 34 M / GECU, 35 output response setting module, 36 input unit, 40 storage unit, 42 output response map, 50 slope, 52 small car (A), 54 large car (B), 60, 61, 62, 63 vehicle.

Claims (6)

A car both drive motion control apparatus comprising one or more rotating electrical machines,
Setting the output responsiveness, which is the rising characteristic of torque output for the rotating electrical machine with respect to the torque command for the rotating electrical machine, to a combination of the mass of the vehicle on which the rotating electrical machine is mounted and the heat capacities of a plurality of predetermined types of rotating electrical machines The vehicle drive control apparatus characterized by performing based on this . The vehicle drive control device according to claim 1,
A vehicle drive control device characterized in that the output responsiveness is set such that, between vehicles having the same mass, the output responsiveness of a rotating electrical machine having a small heat capacity is made slower than the output responsiveness of a rotating electrical machine having a large heat capacity . The vehicle drive control device according to claim 1 ,
The output responsiveness setting is to make the output responsiveness of a rotating electrical machine mounted on a vehicle with a large mass slower than the output response of a rotating electrical machine mounted on a vehicle with a small mass between rotating electrical machines with the same heat capacity. A vehicle drive control device. The vehicle drive control device according to claim 1 ,
For vehicles equipped with an engine in addition to the rotating electrical machine, the output response setting for the rotating electrical machine increases the output response as the maximum driving force ratio, which is the ratio of the maximum driving force of the rotating electrical machine to the maximum driving force of the engine, is larger. Vehicle drive control device characterized by slowing performance. In the vehicle drive control device according to any one of claims 1 to 3 ,
Output response of the setting, the vehicle drive control apparatus characterized by variable according to the magnitude of the accelerator opening degree corresponding to the torque command for the electric rotating machine. In the vehicle drive control device according to claim 5,
The output response setting is
A vehicle drive control device characterized in that the output response is delayed as the accelerator opening increases .

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