JP2013143799A - Charging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging apparatus capable of solving a problem of vibration and abnormal sound generated in charging a battery using a motor as a charger, and a problem related to degradation of durability.SOLUTION: A dog clutch 21 is inserted and arranged in a transmission system heading toward a wheel 1 from a motor 2 via a transmission 3. A motor controller 6 responses to a motor torque command value tTm from a vehicle controller 7, converts power from a battery 4 to alternate current by an inverter 5, and supplies AC power corresponding to the motor torque command value tTm to the motor 2. Motor power heads to the wheel 1 via the dog clutch 21 and the transmission 3 in an engagement state to run a vehicle. When charging the battery 4 while using the motor 2 as a charger, the charging is performed while a motor transmission system is shut off by disengagement of the dog clutch 21. Thereby, even when a rotor is vibrated by magnetic force in charging the battery 4 while using the motor 2 as a charger, it never heads to the drive wheel 1 via the motor transmission system, and problems of vibration and abnormal sound in the charging can be solved.

Description

  The present invention relates to a charging device for charging a battery, which is a motor driving power source of a motor driving system, with electric power from an external power source.

When charging a motor drive battery with power from an external power supply, the external power supply plug is inserted into the charge port of the motor drive system to perform the charge. In this charging, the power type of the external power supply is connected to the battery. It is necessary to have a charger that changes to a power type that can be charged.
Whether this charger is installed on the motor drive system side or on the external power supply side, it is an additional facility and a cost disadvantage cannot be avoided.

Therefore, as described in Patent Document 1, by using the motor as a charging inductor or a charging transformer, the motor and the charger can be integrated,
As described in Patent Document 2, it has been proposed to use a motor as a part of a charger.

Japanese Patent No. 3168807 JP 2000-232737 A

  However, in any case, when the motor is integrated with the charger or used as a part of the charger, the magnet magnetic force is changed by controlling the value of the current applied to the motor as described in Patent Documents 1 and 2. Therefore, it is inevitable that the rotor of the motor vibrates during charging, and this vibration leads to a driven rotating body such as a wheel through the motor drive system, causing a problem that vibration and abnormal noise occur, This causes a problem that the durability of the motor drive system is lowered.

  The present invention controls the applied current value to the motor to change the magnet magnetic force, so that the problem of vibration and noise described above can be achieved even when the motor is integrated with the charger or used as part of the charger. Another object of the present invention is to propose a charging device for use in a motor drive system that does not cause problems related to durability of the motor drive system.

For this purpose, the charging device according to the present invention comprises the following.
First, to explain the charging device which is the premise of the present invention,
An apparatus for charging a battery of a driving system including a motor driven by electric power from a battery with an external power source, and diverting the motor as a part of a charger during the charging.

  The present invention relates to a connecting / disconnecting means for enabling connection / disconnection of the driving system to the charging device as described above, and a driving system for keeping the driving system in a disconnected state by releasing the connecting / disconnecting means during the charging. It is characterized by a configuration provided with a shut-off control means.

According to the charging device of the present invention described above, in order to keep the motor drive system in a disconnected state by releasing the connecting / disconnecting means during charging,
When the battery is charged by an external power source, the motor is used as a part of the charger. Even if the rotor of the motor vibrates during charging, this vibration passes through the motor drive system and is driven by a driven rotating body such as a wheel. Therefore, it is possible to avoid the problem that vibration and abnormal noise are generated and the problem that the durability of the motor drive system is lowered.

1 is a schematic system diagram illustrating a motor drive system of an electric vehicle including a charging device according to a first embodiment of the present invention, together with a control system including the charging system. 1 shows a dog clutch which is an engaging / disengaging connection / disconnection means inserted in the motor drive system in FIG. 1, (a) is an enlarged detailed side view showing the dog clutch in an engaged (coupled) state, and (b) is the dog clutch. It is an expansion detailed side view which shows in a detachment (release) state. 2 is a flowchart of a charging control program executed by the charging system in FIG. 4 is a flowchart similar to FIG. 3, showing a charging control program for a charging device according to a second embodiment of the present invention. FIG. 4 is a flowchart similar to FIG. 3, showing a charging control program for a charging apparatus according to a third embodiment of the present invention. 6 is a flowchart similar to FIG. 3, showing a charging control program for a charging device according to a fourth embodiment of the present invention. 6 is a flowchart similar to FIG. 3, showing a charging control program for a charging apparatus according to a fifth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings.
<Motor drive system of the first embodiment>
FIG. 1 is a schematic system diagram showing a motor drive system of an electric vehicle including a charging apparatus according to a first embodiment of the present invention, together with a control system including the charging system.
In FIG. 1, 1 indicates a drive wheel, and 2 indicates an electric motor as a power source.
A transmission 3 including a speed reducer is interposed between the driving wheel 1 and the motor 2, and the driving force of the motor 2 is directed to the wheel 1 through the transmission 3, thereby enabling the electric vehicle to travel.

The transmission 3 includes a so-called parking parking lock mechanism 3a that locks the output shaft of the vehicle, and the parking wheel is parked by preventing the rotation of the driving wheel 1 by the operation of the parking lock mechanism 3a during charging, which will be described later. Shall be assumed.
Accordingly, the park lock mechanism 3a corresponds to the rotation lock means in the present invention.

The motor 2 uses the battery 4 as a power source, and the electric power from now on is supplied under the control described later by the inverter 5, and the driving force corresponding to the supplied electric power is output to the transmission 3 so that the electric vehicle can travel as described above. Close.
When the motor 2 is controlled, the motor controller 6 converts the electric power of the battery 4 into DC-AC by the inverter 5 and supplies it to the motor 2, and supplies this AC power to the motor 2 under the control of the inverter 5. The drive control of the motor 2 is performed so that the torque of the motor 2 matches the motor torque command value tTm from the vehicle controller 7.
The vehicle controller 7 obtains a motor torque command value tTm based on the accelerator opening APO detected by the sensor 8 and the vehicle speed VSP detected by the sensor 9, and instructs the motor controller 6 to contribute to the motor control.

When the motor torque command value tTm has a negative polarity that requires the motor 2 to perform a regenerative braking action, the motor controller 6 applies a power generation load to the motor 2 via the inverter 5 so that the battery 4 is not overcharged. Give,
At this time, the electric power generated by the motor 2 due to the regenerative braking action is AC-DC converted by the inverter 5 to charge the battery 4.

<Charging control of the first embodiment>
In this embodiment, although not shown, the motor 2 is constituted by a stator comprising a plurality of teeth (magnetic pole pieces) and independent coils concentratedly wound thereon, and a rotor in which permanent magnets are embedded, and a battery 4 It is assumed that the motor 2 can be used as a charger by controlling energization of the stator coil when charging.

The motor controller 6 and the vehicle controller 7 cooperate with the charge controller 11 to charge the battery 4 with an external power source (not shown) as described in detail later.
For this charging control, the vehicle controller 7 is charged to detect that the signal from the ignition switch 12 (drive system use start operation switch) and the charging plug of the external power supply are fitted in the charging port of the vehicle. A signal from the plug fitting detection sensor 13 (plug connection detection sensor) is input.
Further, the motor controller 6 receives a signal from a motor rotation angle sensor 14 that detects the rotation angle (motor rotation amount) of the motor 2.
Then, a charge permission determination signal is input from the vehicle controller 7 to the charge controller 11, and a charging magnetic force control command and a charge command are transmitted from the charge controller 11 to the motor controller 6.

A connecting / disconnecting means 21 capable of appropriately connecting / disconnecting the transmission system between the motor 2 and the driving wheel 1 is interposed.
The connecting / disconnecting means 21 may be interposed anywhere between the motor 2 and the driving wheel 1, and is added between the transmission 3 and the driving wheel 1 instead of between the motor 2 and the transmission 3 as shown in FIG. You can also
The connecting / disconnecting means 21 is connected to the transmission system in the transmission 3 by using the shift friction element in the transmission 3 instead of additionally installing as described above (selecting the current gear position selection state). The transmission 3 may be appropriately neutralized by releasing the variable speed friction element).

However, in any case, the connecting / disconnecting means 21 is in a meshed engagement state (coupled state) shown in FIG. 2 (a) and out of the meshing state shown in FIG. An engagement / disengagement means such as a dog clutch capable of switching the state between the disengaged state (released state) is preferable in that it requires less energy for the disengagement operation of the means.
Therefore, in this embodiment, the connecting / disconnecting means 21 is not a frictional connecting / disconnecting means such as a friction clutch, but a dog clutch (engaging / disconnecting connecting / disconnecting means) shown in FIGS. 2 (a) and 2 (b). It is inserted into the motor drive system in front of the transmission 3 and added.

As shown in FIG. 1, the connecting / disconnecting means 21 is a dog clutch, and when it is inserted into a motor drive system for additional installation, a clutch controller 22 is provided for coupling and releasing control.
It is assumed that the clutch controller 22 engages and disengages the dog clutch 21 in response to a command from the charge controller 11.
When the shift friction element in the transmission 3 is used as the connecting / disconnecting means 21, a shift controller (not shown) of the transmission 3 is moved in response to a command from the charge controller 11, and the corresponding shift friction element is set. Needless to say, the fastening and releasing are controlled.

  The motor controller 6, the vehicle controller 7, the charge controller 11 and the clutch controller 22 execute the control program of FIG. 3 based on the input information to the controllers, and charge control of the battery 4 by the external power source is as follows. To do.

First, in step S11 of FIG. 3, preparation for charging such as setting the controllers 6, 7, 11, and 22 to a standby state for charge control is performed.
In the next step S12, whether or not charging is possible is determined based on whether or not the charging start switch is turned on and whether or not the charging reservation start time is reached.

While it is determined in step S12 that charging is not possible, control is returned to step S11 and the battery is kept in a ready state for charging.
When it is determined in step S12 that charging is possible, control proceeds to step S13, the dog clutch 21 is disengaged in FIG. 2B, and the motor transmission system is shut off at the position of the dog clutch 21.
Therefore, step S13 corresponds to the drive system cutoff control means and the connection / disconnection control means in the present invention.

In the next step S14, charging of the battery 4 by the external power supply is started, and the charging is advanced in step S15.
In step S16, it is determined whether or not the charging of the battery 4 has been completed. If the charging has not been completed, the control is returned to step S15 and the charging is further advanced.

When it is determined in step S16 that charging of the battery 4 has been completed, the control is sequentially advanced to step S17 and step S18.
In step S17, charging is terminated, and in step S18, the dog clutch 21 is engaged as shown in FIG.
Therefore, step S18 constitutes the connection / disconnection control means in the present invention together with the aforementioned step S13.

In step S18, when the dog clutch 21 is brought into the engaged state shown in FIG. 2A, the meshing phase of the dog clutch 21 in the disengaged state shown in FIG. The meshing engagement phase is achieved by controlling the rotational position of the motor 2 based on the detection signal, and after this phase alignment, the dog clutch 21 is switched from the disengaged state in FIG. 2 (b) to the engaged state in FIG. 2 (a). .
Therefore, step S18 also constitutes the phase matching means in the present invention.

  In the last step S19, the motor 2 is driven by the normal energization control to the stator coil, and the vehicle starts to travel.

<Effects of the first embodiment>
In the charging device of the first embodiment described above, the motor 2 is used as a charger, and while the battery 4 is charged by an external power source via this, the motor transmission system is removed by the dog clutch 21 being removed (step S13). Because it is in the shut-off state,
The motor is used as a part of the charger. The motor vibration generated during charging The motor does not reach the driven rotating body such as wheels through the motor drive system, causing problems such as vibration and noise, and motor drive The problem that the durability of the system is lowered can be avoided.

  In order to solve this problem, the dog clutch 21 is used as a connecting / disconnecting means for shutting off the motor transmission system, and the dog clutch 21 consumes energy when the state is switched, but this state is maintained after the state is switched. Energy is not required, the energy consumption required to achieve the above-mentioned actions and effects is small, and energy efficiency can be increased.

Furthermore, since there is a transmission 3 between the connecting / disconnecting means (dog clutch) 21 and the driving wheel 1, it is driven while the battery 4 is charged while the connecting / disconnecting means (dog clutch) 21 is released (disengaged). The wheel 1 can be made difficult to roll, and the vehicle being charged can be kept in a stable state.
In this embodiment, the transmission 3 includes the park lock mechanism 3a, and the park lock mechanism 3a is operated during charging. Therefore, the vehicle can be kept in a stable state during charging. Can be made more prominent.

  When the charging completion determination (step S16) is made, the motor transmission system is brought into a non-interruption state by the engagement of the dog clutch 21 (step S18), so that the driving by the motor drive can be started immediately after the charging is completed ( Step S19).

  When the dog clutch 21 is brought into the engaged state of FIG. 2A in step S18, the meshing phase of the dog clutch 21 in the disengaged state of FIG. Since the dog clutch 21 is switched from the disengaged state in FIG. 2 (b) to the engaged state in FIG. 2 (a) after that, the state switching to the engaged state of the dog clutch 21 can be reliably performed. It is possible to avoid problems such as delaying the state switching and delaying the start of travel in step S19, or increasing the motor rotation before the state switching and causing a large engagement shock of the dog clutch 21 at the time of the state switching. .

<Charging control of the second embodiment>
FIG. 4 is a flowchart similar to FIG. 3 showing a charging control program for the charging device according to the second embodiment of the present invention, in which steps S21 to S24 are added between step S13 and step S14 of FIG. is there.
The charge control of this embodiment is also for charge control of the motor drive system of the electric vehicle shown in FIG.

Steps S11 to S13 in FIG. 4 function in the same manner as the steps indicated by the same reference numerals in FIG.
In step S11, the controller 6, 7, 11, 22 is prepared for charging such as setting the standby state for charge control,
In step S12, it is determined whether or not charging is possible.
In step S13, the dog clutch 21 is disengaged as shown in FIG. 2B, and the motor transmission system is shut off at the position of the dog clutch 21.

  In this embodiment, after the motor transmission system is shut off by removing the dog clutch 21 in step S13, the charging is not started immediately in step S14, but in step S21 to step S24, the dog clutch 21 is disengaged in step S13. It is checked whether or not the disengagement is surely performed, and after confirming that the dog clutch 21 is disengaged, charging is started in step S14.

In order to check whether or not the dog clutch 21 has been removed properly in step S13, power is supplied to the motor 2 in step S21.
Next, in step S22, the rotational speed Nm of the motor 2 is measured based on the motor rotational angle detected by the sensor 14 of FIG.
In the next step S23, it is checked whether or not the dog clutch 21 has been detached in step S13 depending on whether or not the motor rotation speed Nm is equal to or greater than the dog clutch removal determination value Nms.

While it is determined in step S23 that Nm <Nms (the dog clutch 21 has not been detached), the control is returned to step S22, and the measurement of the motor rotational speed Nm is continued, and the dog clutch 21 is completely removed.
When the release of the dog clutch 21 is completed, Nm ≧ Nms is established. In response to this, step S23 advances the control to step S24, and power supply to the motor 2 started in step S21 is stopped.
Therefore, step S21 corresponds to the pre-charging motor power supply means in the present invention, step S23 corresponds to the transmission system interruption determination means in the present invention, and step S24 corresponds to the motor power supply stop means in the present invention.

As described above, it is determined that the dog clutch 21 is completely removed (step S23), and after stopping the motor power supply used for the determination (step S24), charging of the battery 4 by the external power source is started in step S14. Let
Therefore, step S14 corresponds to the charge start control means in the present invention.

In the next step S15, the charging started as described above in step S14 is advanced.
In step S16, it is determined whether or not the charging of the battery 4 has been completed. If the charging has not been completed, the control is returned to step S15 and the charging is further advanced.

When it is determined in step S16 that charging of the battery 4 has been completed, the control is sequentially advanced to step S17 and step S18.
In step S17, charging is terminated, and in step S18, the dog clutch 21 is engaged as shown in FIG.

  In the last step S19, the motor 2 is driven by the normal energization control to the stator coil, and the vehicle starts to travel.

<Effect of the second embodiment>
In the charging device of the second embodiment described above, in addition to all the operations and effects of the first embodiment,
In order to start charging the battery 4 in step S14 after confirming in step S21 to step S24 that the dog clutch 21 has been securely detached in step S13,
Charging is not started without the dog clutch 21 being removed from the clutch in step S13 due to a malfunction of the control system of the dog clutch 21. In addition, it is possible to avoid the disadvantage that the effect of improving the durability of the motor drive system cannot be obtained.

<Charge control of the third embodiment>
FIG. 5 is a flowchart similar to FIG. 3 showing a charging control program for the charging apparatus according to the third embodiment of the present invention, in which steps S31 to S34 are added between step S13 and step S14 of FIG. is there.
The charge control of this embodiment is also for charge control of the motor drive system of the electric vehicle shown in FIG.

Steps S11 to S13 in FIG. 5 function in the same manner as the steps indicated by the same reference numerals in FIG.
In step S11, the controller 6, 7, 11, 22 is prepared for charging such as setting the standby state for charge control,
In step S12, it is determined whether or not charging is possible.
In step S13, the dog clutch 21 is disengaged as shown in FIG. 2B, and the motor transmission system is shut off at the position of the dog clutch 21.

  In this embodiment, after the motor transmission system is shut off by removing the dog clutch 21 in step S13, charging is not started immediately in step S14. In step S31 to step S34, the rotor of the motor 2 (motor rotor) ) Is rotated so that the above-mentioned vibration (abnormal noise) and durability problems can be achieved to a target phase that can alleviate the problem to the maximum, and then charging is started in step S14.

In order to set the rotor of the motor 2 to a target phase in which the above-mentioned problems related to vibration (abnormal noise) and durability are alleviated to the maximum, first, in step S31, the rotor is rotated by supplying power to the motor 2, and the next step In S32, the rotor of the motor 2 is set to an arbitrary phase.
In step S33, it is checked whether or not the set rotor phase is a target rotor phase that can alleviate the problems of vibration (abnormal noise) and durability described above.

While it is determined in step S33 that the rotor phase is not the target rotor phase (the target rotor phase has not been achieved), the control is returned to step S32 and step S33, the rotor phase is newly set, and the target rotor phase is achieved. The above operation is repeated until the target rotor phase is achieved while rechecking whether or not.
When it is determined in step S33 that the target rotor phase has been achieved, step S33 advances the control to step S34, and stops the rotation of the motor 2 started in step S31.
Therefore, step S31 to step S33 correspond to the motor rotor phase alignment means in the present invention.

As described above, the achievement of the target rotor phase is determined (step S33), and after stopping the motor rotation performed for the determination (step S34), charging of the battery 4 by the external power source is started in step S14. .
Therefore, step S14 corresponds to the charge start control means in the present invention.

In the next step S15, the charging started as described above in step S14 is advanced.
In step S16, it is determined whether or not the charging of the battery 4 has been completed. If the charging has not been completed, the control is returned to step S15 and the charging is further advanced.

When it is determined in step S16 that charging of the battery 4 has been completed, the control is sequentially advanced to step S17 and step S18.
In step S17, charging is terminated, and in step S18, the dog clutch 21 is engaged as shown in FIG.

  In the last step S19, the motor 2 is driven by the normal energization control to the stator coil, and the vehicle starts to travel.

<Effect of the third embodiment>
In the charging device of the third embodiment described above, in addition to the effects and effects of the first embodiment described above,
Prior to the start of charging in step S14, the rotor phase of the motor 2 is set as a target phase in which the problems related to vibration (abnormal noise) and durability are alleviated to the maximum in steps S31 to S34. In order to perform charging at step S14 and step S15,
The effect of preventing the occurrence of vibration and abnormal noise and the effect of improving the durability of the motor drive system described above for the first embodiment can be made more remarkable.

<Charge control of the fourth embodiment>
FIG. 6 is a flowchart similar to FIG. 3 showing a charging control program for the charging apparatus according to the fourth embodiment of the present invention, in which steps S41 to S46 are added between step S13 and step S14 of FIG. is there.
The charge control of this embodiment is also for charge control of the motor drive system of the electric vehicle shown in FIG.

Steps S11 to S13 in FIG. 6 function in the same manner as the steps indicated by the same reference numerals in FIG.
In step S11, the controller 6, 7, 11, 22 is prepared for charging such as setting the standby state for charge control,
In step S12, it is determined whether or not charging is possible.
In step S13, the dog clutch 21 is disengaged as shown in FIG. 2B, and the motor transmission system is shut off at the position of the dog clutch 21.

  In this embodiment, after the motor transmission system is shut off by removing the dog clutch 21 in step S13, charging is not started immediately in step S14, but in step S41 to step S46, the rotor of the motor 2 (motor rotating body) The motor 2 is rotated so that the vibration (abnormal noise) and the durability problem can be alleviated as much as possible, and then charging is started in step S14.

  In order to rotate the motor 2 so that the above-mentioned problems relating to vibration (abnormal noise) and durability of the rotor of the motor 2 are maximally mitigated, first, in step S41, the rotor phase is changed by supplying power to the motor 2. The motor 2 is rotated so as to advance one step at a time by dividing the electrical angle by one period.

In step S42, charging is performed each time the motor rotor phase advances by one step as described above,
In step S43, the rotor phase fluctuation at the time of charging is measured by the motor rotation angle sensor 14.
In step S44, whether or not the steps S41 to S43 have been executed a set number of times is checked based on whether or not the number of rotor phase steps advanced in step S41 has reached the set number of steps. By returning control to step S41, steps S41 to S43 are executed a set number of times.

Thus, after step S41 to step S43 are executed a set number of times, step S45 is selected. Here, the target rotor phase is determined as follows.
That is, in step S45, the rotor phase when the rotor phase fluctuation is the smallest among the rotor phase fluctuations measured in step S43 is determined as the target rotor phase every time the rotor phase is advanced step by step in step S41.
The rotor phase (target rotor phase) when the rotor phase fluctuation is the smallest is the rotor phase in which the problems related to vibration (abnormal noise) and durability are alleviated to the maximum.

In step S46, the rotor rotational position of the motor 2 is adjusted so that the rotor phase becomes the target rotor phase.
Therefore, step S41 to step S46 correspond to the motor rotor phase alignment means in the present invention.

After adjusting the rotational position of the rotor of the motor 2 so that the rotor phase of the motor 2 becomes the target rotor phase as described above (step S46), charging of the battery 4 by the external power source is started in step S14.
Therefore, step S14 corresponds to the charge start control means in the present invention.

In the next step S15, the charging started as described above in step S14 is advanced.
In step S16, it is determined whether or not the charging of the battery 4 has been completed. If the charging has not been completed, the control is returned to step S15 and the charging is further advanced.

When it is determined in step S16 that charging of the battery 4 has been completed, the control is sequentially advanced to step S17 and step S18.
In step S17, charging is terminated, and in step S18, the dog clutch 21 is engaged as shown in FIG.

  In the last step S19, the motor 2 is driven by the normal energization control to the stator coil, and the vehicle starts to travel.

<Effect of the fourth embodiment>
In the charging device of the above-described fourth embodiment, in addition to being able to exhibit all the above-described actions and effects of the first embodiment,
Prior to the start of charging in step S14, the rotor phase of the motor 2 is set as a target phase in which the problems related to vibration (abnormal noise) and durability are alleviated to the maximum in steps S41 to S46. In order to perform charging at step S14 and step S15,
The effect of preventing the occurrence of vibration and abnormal noise and the effect of improving the durability of the motor drive system described above for the first embodiment can be made more remarkable.

<Charge control of the fifth embodiment>
FIG. 7 is a flowchart similar to FIG. 3 showing a charging control program for the charging device according to the fifth embodiment of the present invention, in which steps S51 to S53 are added between step S13 and step S14 of FIG. is there.
The charge control of this embodiment is also for charge control of the motor drive system of the electric vehicle shown in FIG. 1, and the motor 2 includes a plurality of teeth (magnetic pole pieces) and independent coils wound around them. And a rotor in which a permanent magnet is embedded.

Steps S11 to S13 in FIG. 7 function in the same manner as the steps indicated by the same reference numerals in FIG.
In step S11, the controller 6, 7, 11, 22 is prepared for charging such as setting the standby state for charge control,
In step S12, it is determined whether or not charging is possible.
In step S13, the dog clutch 21 is disengaged as shown in FIG. 2B, and the motor transmission system is shut off at the position of the dog clutch 21.

  In this embodiment, after the motor transmission system is shut off by removing the dog clutch 21 in step S13, charging is not started immediately in step S14, and in step S51 to step S53, the rotor (motor rotor) The motor 2 is rotated so that the vibration (abnormal noise) and the durability problem can be alleviated as much as possible, and then charging is started in step S14.

  First, in step S51, the rotor is rotated by supplying power to the motor 2 so that the rotor of the motor 2 is rotated so that the above-described problems relating to vibration (abnormal noise) and durability are alleviated to the maximum. .

In step S52, the rotor rotational position where the problems related to vibration (abnormal noise) and durability are alleviated to the maximum, depending on whether or not the magnet center position of the rotor coincides with at least one teeth center of the stator coil. Check if it exists.
While it is not such a rotor rotational position, the control is returned from step S52 to step S51, and the rotor is further rotated by supplying power to the motor 2. When the rotor rotational position is reached, the control proceeds from step S52 to step S63. By stopping the motor 2, the rotation position of the rotor is adjusted so that the magnet center position coincides with at least one teeth center of the stator coil (the problems related to vibration, noise, and durability described above can be alleviated to the maximum. The rotor rotation position).
Therefore, steps S51 to S53 correspond to the motor rotor phase matching means in the present invention.

As described above, the rotor rotational position of the motor 2 is set to a position where the magnet center position coincides with at least one teeth center of the stator coil (step S51 to step S53), and then in step S14, the battery by the external power source is used. Start charging 4.
Therefore, step S14 corresponds to the charge start control means in the present invention.

In the next step S15, the charging started as described above in step S14 is advanced.
In step S16, it is determined whether or not the charging of the battery 4 has been completed. If the charging has not been completed, the control is returned to step S15 and the charging is further advanced.

When it is determined in step S16 that charging of the battery 4 has been completed, the control is sequentially advanced to step S17 and step S18.
In step S17, charging is terminated, and in step S18, the dog clutch 21 is engaged as shown in FIG.

  In the last step S19, the motor 2 is driven by the normal energization control to the stator coil, and the vehicle starts to travel.

<Effect of the fifth embodiment>
In the charging device of the fifth embodiment described above, in addition to being able to exhibit all the operations and effects of the first embodiment,
Prior to the start of charging in step S14, in step S51 to step S53, the rotor rotational position of the motor 2 is set as a rotational position where the problems related to vibration (abnormal noise) and durability are alleviated to the maximum. In order to perform charging at step S14 and step S15 under the rotational position,
The effect of preventing the occurrence of vibration and abnormal noise and the effect of improving the durability of the motor drive system described above for the first embodiment can be made more remarkable.

1 Drive wheel
2 Electric motor (motor)
3 Transmission
3a Park lock mechanism (rotation lock means)
4 battery
5 Inverter
7 Vehicle controller
8 Accelerator position sensor
9 Vehicle speed sensor
11 Charge controller
12 Ignition switch
13 Charging plug mating detection sensor
14 Motor rotation angle sensor
21 Dog clutch (connection / disconnection means: engagement / disengagement connection / disconnection means)
22 Clutch controller

Claims (10)

An apparatus for charging the battery of a driving system including a motor driven by electric power from a battery by an external power source, wherein the motor is used as a part of a charger in the charging. ,
Connection / disconnection means for enabling connection / disconnection of the drive system,
A charging apparatus comprising drive system shut-off control means for keeping the drive system shut off by releasing the connecting / disconnecting means during the charging. In the charging device according to claim 1,
2. The charging apparatus according to claim 1, wherein the connecting / disconnecting means is an engaging / disengaging connecting / disconnecting means that switches between a meshing engagement state and a meshing engagement / disengagement state, and that performs the release according to the meshing disengagement state. In the charging device according to claim 1 or 2,
A charging device, wherein a transmission is inserted into a transmission system portion downstream of the connecting / disconnecting means in the transmission system. In the charging device according to any one of claims 1 to 3,
A charging device comprising: a rotation lock means that enables rotation lock of the transmission system portion at a transmission system portion downstream of the connection / disconnection means in the transmission system. In the charging device according to any one of claims 1 to 4,
A charging apparatus comprising: a connecting / disconnecting control unit that releases the connecting / disconnecting unit in response to the charging start command, and that couples the connecting / disconnecting unit in response to the charging end determination. In the charging device according to claim 5,
The connecting / disconnecting control means includes phase adjusting means for making the engaging phase of the engaging / disengaging connection / disconnection means the engaging / disengaging phase by rotation of the motor while the engaging / disengaging connection / disconnection means is in the engagement / disengagement state. A charging device characterized in that after phase adjustment by the means, the state switching from the meshing disengagement state of the engagement / disengagement connecting / disconnecting means to the meshing engagement state is performed. In the charging device according to any one of claims 1 to 6,
Pre-charging motor power supply means for supplying driving power to the motor prior to the charging;
Transmission system cutoff determination for determining whether or not the drive system cutoff means has completed the disconnection of the transmission system through the release of the connection / disconnection means by whether or not the motor rotation in response to the power supply by the means has occurred Means,
Motor power supply stopping means for stopping driving power supply to the motor when it is determined that the transmission system is shut off by the means;
And a charging start control means for starting the charging after the power supply to the motor is stopped by the means. In the charging device according to any one of claims 1 to 7,
Motor rotating body phase adjusting means for rotating the motor so that the rotating body of the motor has a predetermined phase prior to the charging;
And a charging start control means for starting the charging after the rotating body of the motor is brought into a predetermined phase by the means. The charging device according to claim 8,
The motor rotating body phase adjusting means detects the phase fluctuation of the motor rotating body while charging while the phase of the motor rotating body is changed for each step obtained by dividing the electrical angle for one cycle into several steps. A charging device characterized in that when the phase fluctuation of the motor rotating body is minimized, the motor rotating body is in the predetermined phase. The charging device according to claim 8, wherein the motor includes a concentrated winding stator coil and a rotor having a permanent magnet embedded therein as the motor rotating body.
The charging apparatus according to claim 1, wherein the motor rotating body is in the predetermined phase when the magnet center position of the rotor coincides with at least one tooth center of the stator coil.

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