JPH03169203A - Battery charging apparatus - Google Patents

Abstract

PURPOSE:To enable holding a generator output always appropriately without being subject to the influence of a load by controlling the number of revolutions of an engine for driving a generator on the basis of the number of revolutions of the generator and the target number of generator revolutions. CONSTITUTION:At the time of a lower limit value(VL)>battery terminal voltage(VT) or the battery terminal voltage VT>upper limit value (VH), a set value( N) is added to the target number of generator revolutions(Ni) so that the target number of generator revolutions Ni is updated, when the lower limit value is more than the battery terminal voltage VT. When the battery terminal voltage VT is more than the upper limit value VH, the set value N is subtracted from the target number of generator revolutions Ni so that the target number of generator revolutions Ni is updated. Then, the number of generator revolutions is subtracted from the target number of generator revolutions Ni so that the deviation is calculated, and the operation quantity for a rotary actuator 10 is set on the basis of the deviation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a battery charging device for driving a generator with an engine and charging a battery.

[Problems to be solved by conventional technology and inventions] In recent years, electric vehicles that use electric motors as a driving source, or internal combustion engines and electric motors, have been developed with the aim of eliminating oil resources and reducing public welfare. In a vehicle such as a so-called hybrid vehicle that combines the following, the driving performance of the vehicle is influenced by the battery installed, and the possible cruising distance is determined depending on the power capacity of the battery.

Therefore, in order to improve running performance, these vehicles usually require a charging device that efficiently charges the battery. ing.

That is, the above-mentioned prior example includes an internal combustion engine that drives a generator for charging the battery, and an ignition device and a starting device for the internal combustion engine that are connected to a power source via an opening/closing means, and the stored energy of the battery is provided. is detected and when the value becomes less than a predetermined value, the opening/closing means is operated to activate the ignition device and the starting device, and when starting of the internal combustion engine is completed, the opening/closing means is operated to activate the starting device. Furthermore, when the load condition of the internal combustion engine is detected and the value becomes below a predetermined value, the opening/closing means is operated to stop the activity of the ignition device. The battery is operated in a high efficiency range to increase the charging efficiency of the battery.

However, conventionally, when charging a battery, charging is controlled by keeping the rotational speed of the engine (internal combustion engine) that drives the pinerator (f machine) constant, so charging is not always done properly. (No, no.

In other words, since the output of the generator is determined by the relationship with the load connected to its output side, the output of the generator may not be maintained optimally even if the engine speed is kept constant. First, there is a problem in that the setting of the engine speed must be changed each time depending on the state of charge of the battery.

[Object of the Invention] The present invention has been made in view of the above circumstances, and provides a battery charging device that can appropriately control the engine that drives the generator and constantly maintain the generator output at an appropriate level without being affected by the load. is intended to provide.

[Means and operations for solving the problems] In order to achieve the above object, a battery charging device according to the present invention includes a pinhole generator for charging a battery, and an engine for driving the generator. charge setting means for setting an output value of the generator when charging the battery; a target generator rotation speed setting means for setting a target generator rotation speed of the generator relative to the output value set by the charge setting means; and a rotation of the generator. The rotation of the engine is calculated based on the target generator rotation speed set by the pinerator target rotation speed setting means and the rotation speed calculated by the generator rotation speed calculation means. and engine rotation speed control means for controlling the engine speed.

That is, when the output value of the generator is set when charging the battery, the target generator rotation speed of the generator is set for this output value, and the generator rotation speed is set based on the generator rotation speed and the target generator rotation speed. The rotation speed of the engine that drives the is controlled.

“Embodiments of the invention” Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a first embodiment of the present invention, and FIG.
FIG. 2 is a functional configuration diagram of the control device, FIG. 2 is a configuration diagram of a charging control system, FIG. 3 is a configuration diagram of a hybrid vehicle, and FIG. 4 is a flowchart showing a charging control procedure.

(Structure) In Fig. 3, the symbol @1 is an electric vehicle, and a pulley 4a of a generator 4 is connected to a crank pulley 2a of an engine 2 via a belt 3. While the battery 5 is charged, the generator 4 also serves as a starter when the engine 2 is started. Electric power is supplied from the battery 5 to an electric motor 6 which is a source of driving force, and an axle 1a is connected to the electric motor 6 via a transmission 7.

That is, the electric vehicle 1 is a so-called serial hybrid vehicle, in which the output of the engine 2 is converted into electric energy by the generator 4, and the electric motor 6 is driven by the electric energy stored in the battery 5. and drive.

In this embodiment, the engine 2 is a gasoline engine, and is not shown in FIG. Air cleaner 9 has been inspected.

Further, a rotary lift 7 controller 10 consisting of a stepping motor or a rotary solenoid is connected to the throttle valve 7a interposed in the intake pipe 7.

Further, a crank angle sensor 11 consisting of an electromagnetic pickup or the like for detecting a predetermined crank angle (in this embodiment, a fixed ignition angle) is provided on the outer peripheral side surface of the crank brake 2a of the engine 2. , the above general
A generator rotational speed sensor 12 consisting of an electromagnetic pickup or the like is provided on the outer periphery of the boom 4a of the generator 4.

In addition, inside the bag 5, there is a gas detection means 13 for detecting gas generated from the electrolyte due to overcharging.
A light-emitting element 13a and a light-receiving element 13b are arranged in pairs, and the light output of the light-emitting element 13a is transferred to the light-receiving element 1.
3b, and gas generated from the electrolytic solution due to charging (so-called gassing) is detected from the light change.

On the other hand, the symbol Q 2 Q is a microphone ``System II consisting of a computer coater'', and this control device 20 is equipped with a CPU 2.
1, ROM22, RAM23, I/O interface 2
4 are connected to each other via a bus line 25, and power is supplied to each part by a constant voltage circuit 26 connected to the battery 5 via a relay contact of a control relay RY.

The control relay RY connects the switch 2 to the battery 5.
7, and its relay contacts include the constant voltage circuit 26, the igniter 2b, the generator control circuit 4b,
A motor control circuit 6a is connected and power is supplied from the bubble 5. Furthermore, an accelerator pedal depression sensor 14 and a brake switch 15 are connected to the motor control circuit 6a. The rotational speed of the electric motor 6 is controlled in accordance with the pedal depression signal, and the brake switch 15 stops energizing the electric motor 6.

In addition, the input port of the I/O interface 24 includes a crank angle sensor 11 and a generator rotation speed sensor 1.
2. The light receiving element 13b, etc. are connected, and the relay contact of the control relay RY is connected to monitor the terminal voltage of the battery 5. On the other hand, the output of the I/O interface 24 is connected to a rotary actuator. Niichiyo 1
The igniter 2b and the generator control circuit 4b are connected via a drive circuit 28.

The igniter 2b has ignition=1 as shown in FIG.
The positive terminal on the primary coil side of coil 16 is connected to the control relay R.
It is connected to the Y relay contact, and the negative terminal on the primary/primary side is connected to a switching element such as a transistor TR. Furthermore, an ignition plug 17 whose ignition part is exposed in the combustion chamber of the engine 2 is connected to the ignition coil 1.
6 is connected to the secondary coil side.

The pinneret control circuit 4b switches the generator 4 to a starter, a generator, etc. as shown in FIG.
Relay 1 [Y3 is connected to the positive terminal of the battery 5 through the relay contact of the control relay RY, and the diode D1 is connected in the forward direction through this relay RY3. Do D1
In parallel with the die tone D2 is connected in the opposite direction (brush 4
It is connected to one side of C.

The side where the diodes DI, D2 and 9 of the brush 4C are connected is connected to the field coil/I. resistance R via d
is further connected to the negative terminal of the bubble 5 via the relay contact of the second relay RY2, and the relay contact of the relay RY3 is connected in parallel with the resistor R. Further, the other end of the brush 4C is connected to the negative terminal of the battery 5 via a relay contact of the first relay RY1.

The ROM 22 stores fixed data such as control programs and control data, and the RAM 22 also stores fixed data such as control programs and control data.
3 stores data after arithmetic processing of the output signals from the sensors 11, 12, 13b, etc. and the monitor value of the terminal voltage of the battery 5 are stored.

The CPU 21 processes the signals from each of the sensors 1 and 1 according to the control program stored in the ROM 22, and sends an ignition signal to the igniter 2b and to the generator control circuit 4b based on the data stored in the RAM 23. The controller calculates the control signal and the drive signal for the rotary actuator 10, starts and stops the engine 2, and controls the charging of the battery 5 in a predetermined charging mode.

(Functional structure of control device) As shown in FIG.
1,000 memory stages 31, charging setting means 32, and 1,000 delay stages 3
3. Target generator rotational speed setting 1,000-stage 34, vinerator rotational speed calculation f-stage 35, engine rotational speed control means 36, ignition driving means 37, and first and second relay driving means 38.

Further, the engine speed control means 36 includes a rotary actuator actuation setting means 36a and an o-tary actuator driving means 36b.

The gassing determination means 30 reads the output voltage El- from the light receiving element 13b of the gas detection stage 13, and determines sudden gas generation in the electrolyte of the battery 5 at the end of charging, so-called gassing. The result is output to the charging setting stage 32.

That is, the light emitting element 13a in the electrolyte of the battery 5
The light output from the light-emitting element 13a is detected by the light-receiving element 13b disposed opposite to the light-emitting cable 13a, and the voltage output E corresponding to the amount of light received is determined to be a predetermined gashing determination reference value IEO (for example, no gashing has occurred). If the voltage is smaller than 90% of the current output voltage, it is determined that gasing has occurred.

In the charging setting stage 32, the charging determination flag FL8G at a predetermined address in the storage means consisting of RAM 2 3 is determined, and this charging determination flag FL8G is set. A G is Fl-80=
O, when the battery 5 is not currently being charged (the engine is stopped), compare the ηl1 voltage V of the battery 5 with a preset lower limit value V1- (for example, 11), and set the VT <VL, the engine 2 is started by instructing the target generator rotational speed setting means 34 to execute the initial setting, and outputting a charging start signal to the ignition driving means 37 and the first and second relay driving means 38. , the above battery rJ
In addition, a charge start signal is given to the delay means 33, and the delay means 33 counts a set time (for example, 3 to 1Qsec) after 1~, that is, the set time from the start of charging by starting the engine. After the elapse of time, the battery terminal voltage V1 is read, and it is determined whether the battery terminal voltage VT during charging by the vinerator 4 is within a range between a preset upper limit value VH (for example, 15 V) and a lower limit value V1-, VL>VT,
Alternatively, if VH<V, the comparison result is output to the target generator rotation speed setting stage 34.

On the other hand, if the charging flag FLAG is FLAG=1 and the battery 5 is already charging (engine operating state),
The charging setting stage 32 reads the battery terminal voltage V1, and the battery terminal voltage v1 during charging has an upper limit value 1 and a lower limit value v1. Determine within which range the Vl. ＞VT
If VH < VT, the comparison result is output to the target generator rotation speed setting stage 34.

Then, when the charging setting means 32 determines that V[≦VT≦VH, or an execution instruction is issued via the delay means 33 from the rotary actuator 13 of the engine speed control means 36, which will be described later. If this is done, the charge setting stage 32 reads the determination result of the gashing determination means 30, and if the gashing determination means 30 determines that there is no gashing, sets the charge flag FLAG. E1
) and continue the charging state, and on the other hand, when gassing is determined by the gassing determining means 30, the charging flag FL is
AG is cleared (FLAG←0) and the rotary actuator drive unit 10 returns the cotter valve 7a to the fully open position via the rotary actuator drive means 36, and at the same time, the ignition drive stage 37 and the 1, outputs a charging end signal to the second relay driving means 38, and
to terminate charging.

The target generator rotation speed setting means 34 sets the target generator rotation speed Ni to an initial value NO (for example, 3000 pp.
m). On the other hand, if the comparison result of the charging setting 1,000 stages 32 is VL>VT, in order to increase the partial charging voltage, the target generator rotation speed N of the current plate 2 stored in the storage means 31 is set. , dN (for example, 50rllm>) to increase and update the target generator rotation speed Ni (Nl+-N+aN>
In addition, in the case of Vll<VT, the battery charging voltage is too high, so in order to lower the battery charging voltage,
From the current target pinerator rotation speed N, reduce the set value, dN, and set the target pinerator rotation speed Ni by 1i (N
i-Ni-IN).

Pinerator simultaneous rotation PII. The output means 35C reads the output transmission {3 of the generator rotation speed hinge 12, and calculates the same rotation speed NGE of the generator 4 from the output interval.

l] In the one-stage actuator operation amount setting 36a,
Calculate the deviation amount △ between the target generator rotation speed setting "set in step 37!I"] standard generator rotation speed Ni and the pinerator rotation speed NGE calculated in step 35 of the generator rotation speed ( Δ-X:-XG"), set the operating amount of the low-rear gear 10 corresponding to this deviation Δ.
The clear actuator 10 is driven through the above-mentioned 15 clear actuator 10, and the throttle valve distance of the engine 2 is adjusted so that the generator rotational speed NGE of the generator 4 becomes the target generator rotational speed Ni. ? I'll.

As a result, the influence of the slit of the belt 3 is removed, the rotational speed of the generator 4 is accurately controlled, and the charging of the battery 5 can be precisely controlled.

Furthermore, the above-mentioned low reactor actuation amount setting is 3,000 steps.
6a (via the delay means 33, a predetermined period of time (for example, 0.
After 5 to 2 seconds have elapsed, an instruction is given to the charge setting stage 32 to read the determination result from the gassing determination means 30.

Note that this J: Setting the delay time to 1 is the rotary actuation]. This is to compensate for the time lag that occurs between when the generator is activated and when the generator rotational speed NGI- actually changes until the disconnection state is stabilized.

In the ignition drive stage 37, when the charging start signal 0 is input from the charging setting means 3216, the ignition drive stage 37 starts the ignition based on the fixed ignition angle signal from the crank angle hinge 11.
The next coil is turned ON and OFF at predetermined timing, and the spark plug 17 is sparked. Then, the operation is stopped in response to a charge end signal from the charge setting stage 32, the primary coil of the ignition coil 16 is kept in a non-loaded state, and the engine 2 is stopped.

In the first and second relay driving means 38, charging is started from the above-mentioned charging setting stage 32 {Pi, A turns on the first relay RYI and the second relay RY2 of the pinerator control circuit 4b, and operates the generator 4 as a starter. In addition, the first relay RY1 and the second relay . R Y 2 is turned off to disconnect the generator 4 from the battery 5 and terminate charging.

′? However, when the engine 2 is stopped and the first relay RYI and the second relay RY2 are turned on, current flows from the battery 5 through the relay RY3, from the diode 17 to the brush 4C, and the relay RY3 is turned on. ONL closes the constant contact to form a starter circuit, and connects the brush 4C to the field coil 4 without passing through the resistor R.
A current flows through d. As a result, the generator 4 is rotated by the current flowing through the field coil 4d, and starts the engine 2 via the belt 3.

And then the engine starts and the RPM goes up? ? As the current decreases, the current in the starter circuit gradually decreases and finally reaches O, causing the relay RY3 to switch to O.

Further, when the engine speed increases, a current starts to flow in the opposite direction from the field coil 4d through the resistor R, charging the battery 5 through the diode D2, and then the first relay RYI and the first relay RYI. When the second relay RY2 becomes OF+, the connection between the pinay battery and the battery 5 is cut off, and charging is terminated.

(Operation) Next, the charging control procedure according to the above structure will be explained according to steps 1-1 in FIG.

18 The program shown in the chart in Figure 4 is a program that is executed at a predetermined time or every predetermined cycle,
This is a charging control procedure in constant voltage charging mode.

First, when the key switch 27 is closed to the relay contact of the ONL control relay RY, power is supplied from the battery 5 to each part, initialization is executed, and the charging determination flag FLAG at a predetermined address in the RAM 23 is cleared (FLAG
= O) Then, the charging control program is executed.

Then, in step S101, the terminal voltage V1 of the battery 5 is
Then, in step S102, the state of the charging determination flag FLAG at a predetermined address in the RAM 23 is determined.

If it is determined in step S102 that FL8G=1, that is, that the current battery 5 is being charged, the process jumps from step S102 to step S110, and the FLA
G=O, that is, if it is determined that the engine 2 is currently stopped and the battery 5 is not charged, the process advances from step S102 to step S103, and
9. Determine whether or not the battery terminal voltage 1'1V read in step S101 has fallen below the lower limit value V1-.

In step S103 above, if T≧V1-, the program exits; if VT<VL, step S1
Proceeding to step S104 from 03, the target generator rotation speed Ni is set to the initial value NO (Ni←NO), and the RA
Store 1 at a predetermined address in M23, set the actuator initial drive signal corresponding to this initial value NO, operate the low reactor actuator 10, let the slots I to Rubalde 7a reach the initial setting interval, and step 3105. , the first relay RY1 and the second relay RY2 of the generator control circuit 4b are turned on to operate the generator 4 as a starter, and an ignition signal is output to the igniter 2b to start the engine 2.

Next, in step 8106, the count of the counter {direct C
1 is increased to the counter 1 (C1<-01+1), and in step S107, the count value C1 of the counter is set to the set value C.
ISIET is determined, and if CI<CISET, the process returns to step 8106; if C1≧CISET, the process proceeds to step 8108.

Step S1 (Proceed to step S10 to clear the counter value C1 (C1←O)
At step 9, read the battery terminal voltage VT. That is, step 3106. 3107, the battery terminal voltage v1 is read after a predetermined period of time (for example, 3 to 1 Qsec) has passed after the engine is started and the engine speed has stabilized.

Next, in step S110, if the battery terminal voltage V read in step S101 or step S109 is within the range between the lower limit value Vl- and the upper limit value 1 (■), ≦VT≦V
11), and if VL≦V≦VII, the process jumps to step S119.

On the other hand, in step S110, VL>VT, or
If it is determined that V > VH, the process advances to step S111, where the battery terminal voltage V1 read in step S101 or step S109 is compared with the lower limit value V, and if VL > VT, Proceed to step S112 and RA
The 4M generator rotation speed Ni stored at a predetermined address of M23 is read out, and the set value aN is added to this 21 target generator rotation speed Ni to increase and update the target generator rotation speed Ni (N←Ni +a
N). That is, the battery terminal heavy pressure V is at the lower limit value V l
．． If the charging voltage is lower, the target generator rotation speed Ni is set to a predetermined value {ii'1 . 6 Increase by N.

Further, if it is not determined in step S111 that Vl-≦VT, that is, Vt>Vll, step S11
Proceed to step 3, subtract the setting 1lI'I/IN from the target generator rotation speed Ni stored in the RAM 23, and update the target generator rotation speed Ni (Ni←N, 6N).
. That is, when the battery terminal voltage V1 is higher than the upper limit value Vl1, the target generator rotation speed Ni is decreased by the set value dN in order to lower the charging voltage.

Next, the process advances to step S114, reads the output signal g of the generator rotation speed pin 1 to 12, calculates the rotation speed NGE of the generator 4, and proceeds to step S115, where it is set in step S112 or step S113. The generator rotation speed NGE calculated in step S114 is subtracted from the target generator rotation speed Ni, and the deviation amount Δ is calculated (Δ−Ni−NGE), and the rotary actuator is adjusted based on this deviation loss Δ. 10th to 4th evening
Set 1 M motion suspension.

Next, proceed to step 8116, and the counter 1-
{Increase target C1 by count 1 (Cl-CI+-1)
, subj-tub S117 ("Count 1 to value C1 is set value C
Determine whether 2SET has been reached and determine if CI <02SE
If T, return to step 8116 and set C1≧0 2SET
In this case, the process proceeds to step S118, where the count value C1 of the counter is cleared (CI<-0), and in step S119, the output voltage E[ of the light receiving element 13b installed inside the battery 5 is read.

- A time lag occurs until the pinerator rotational speed NG actually changes when the low reactor 10 is operated overnight to change the opening degree of the throttle valve 7a and the pinerator rotation speed NG [actuated in step S115] is changed. So,
After the actuator operation is set in steps 3116 and S117, a predetermined period of time (for example, 0, 5, ~ 2 seconds) is set.
ec) The output voltage EL of the light receiving element 1323b is read after the lapse of time.

Next, in step S120, the output voltage E L of the light receiving element 13b is compared with the gassing determination reference value EO,
Determine whether gashing is occurring.

” If it is determined in step S120 that EL<FO, that is, gassing has occurred, the process proceeds from step S120 to step S121, where the charge determination flag FLAG is cleared (FLAG{-0}, step S12
2, the ignition signal to the igniter 2b is cut, and the drive of the rotary actuator 10 is stopped, and the switch L1
Fully open the first relay valve 7a to stop the engine 2, and turn off the first relay RY1 and second relay RY2.
to finish charging the battery 5 and exit the program.

On the other hand, if it is determined in the above step S120 that E1-≧EO, that is, there is no gashing, the process proceeds from the above step S120 to step S123, where the charge discrimination flag FLAG is set (FLAG←1), and the Extract 1 cogram and get 4-1.

24 (Second example) Next, a second embodiment of the present invention will be described.

The second embodiment is a charging control in a quasi-constant voltage charging mode, and is different from the first embodiment in the functions of the charge setting means 32 and the target pinerator rotation speed setting means 33 shown in FIG.

In other words, in the quasi-constant voltage charging mode, the charging setting is 32 steps.
determines the charging determination flag FLAG at a predetermined address in the memory 31 consisting of the RAM 23, and when the charging determination flag FLAG is Fl-80=O, that is, the battery 5 is not currently being charged. , compares the terminal voltage V of the battery 5 with a predetermined lower limit value VL (for example, IIV), and when VT < VL, instructs the target generator rotation speed setting stage 34 to set the target generator rotation speed, and also turns off the ignition. Drive means 37, first and second relay drive means 3
8 starts the engine 2 and starts charging the battery 5. Roughly, a charge start signal is also output to the delay means 33, and the delay means 33 starts the charging start signal for a set time (for example, 3 After counting ~lQsec), ? That is, the battery terminal voltage VT is read after a set time has elapsed from the start of charging by starting the engine 25. Further, if the battery 5 is already being charged (FLAG=1>), the battery terminal voltage V1 is read.

Then, the battery terminal voltage V is the final charging voltage B: V11
(for example, 15 V), or when the gashing determining means 30 determines that gasking has occurred, the charging determination flag FLAG is cleared (FLAG=
O) L, low reactor actuator drive means 36
b, the throttle valve 7a is fully closed by the low rear actuator 10, and the low rear actuator 10 is fully closed. 1,000-stage overnight drive 36b1 ignition drive means 37, and the first
, outputs a charging end signal to the second relay driving means 38, stops the engine 2, and ends charging.

Further, the target generator rotation speed setting means 34 sets the pinerator target rotation speed Ni to the steady rotation speed NO (for example, 3000 ppm) according to the instruction from the charge setting means 32, and the low reactor actuation amount setting means 36a
Output to.

26 The charging control procedure for entering this quasi-constant voltage charging mode is as follows.
The explanation will be given according to flowchart 17 in the figure.

After reading the terminal voltage VT of the battery 5 in step S201, the process then proceeds to step S202, where the state of the charging determination flag FLAG at a predetermined address in the RAM 23 is determined.

If it is determined in Step S202 of Section 12 that FLAG=1, that is, the current battery 5 is being charged, the process jumps from Step S202 to Step S210, and
When LAG=01, if it is determined that the engine 2 is currently stopped and the battery 5 is not charged, the process proceeds from step S202 to step S203.

In step S203, the step 32 0 1 ″
It is determined whether or not the battery terminal voltage V (cm) is lower than the lower limit value 1-, and if VT≧V1-, the program exits, and if Vr<VL, the step S20 is performed.
3, proceeds to step S204, sets the target generator rotation speed N1 to the steady rotation speed No.
Set the initial drive amount of the sliding actuator corresponding to [-1
- Operates the clear cutter 10 (27) to open the throttle valve 7a to the initial setting opening degree, and proceeds to step S205, where the control circuit 4 of the pinerator 4
The first relay RY1 and the second relay RY2 of b are ONL,
The generator 4 is operated as a starter, and an ignition signal is output to the ignitor 2b to start the engine 2.

Next, the process advances to step 3206 and the counter count {
The direct C1 is increased from the counter 1 to the counter 1 of the force counter in step S207, and the value C1 reaches the set value CISE1! ,
: If C 1 < C ISET, the process returns to step 8206 and C1≧C? In the case of SET, the process advances to step 8208, clears the counter C1, and sets the battery terminal voltage VT to B in step S209.
5c included.

Next, in step S210, it is determined whether the battery terminal voltage v1 read in step S201 or step S209 has reached the end-of-charge Jli voltage Vl+, and if VT>Vll, the process jumps to step S218, and VT≦ In the case of VH, the process proceeds to step S211, reads the output signal of the generator rotation speed sensor 12, calculates the rotation speed NGE of the generator 4, and proceeds to step S212.

In step S212, from the 11 standard generator rotation speed Ni set in step S204, the
The deviation fil is calculated by subtracting the generator rotational speed NGE calculated in step 11 (z = Ni - NGE), and the operation for the rotary actuator 10 is set based on the deviation loss (D). I will appear on the 10th.

Next, in step S213, the counter C1 is incremented, and in step S214 it is determined whether the counter count value C1 has reached the set value C2SET, and if CI<02SET, the process returns to step S213. If C1≧02SET, the process advances to step S215, where counter 1 to value C1 are cleared, and at step 8216, the light receiving element 13 set inside the battery 5 is
Read the output voltage [l-] of b.

Next, in step S217, the output voltage E1 of the light receiving element 13b is determined. and gashing discrimination criteria {if E O
It is determined whether or not gashing has occurred.

29 If it is determined in the above step S217 that FL<EO, that is, gassing has occurred, the process proceeds from the above step S217 to step 8218, where the charging determination flag FLAG is cleared (FLAG(-0)), and step S219
Then, cut the ignition signal to igniter 2b to 1, then b
■Stop the drive of the tarry actuator 10, turn off the throttle valve 7a to stop the engine 2, and turn off the first relay RY1 and second relay RY2 of the generator control circuit 4b to charge the battery 5. Terminate and exit the program.

On the other hand, if it is determined in the above step S217 that E L≧FO, that is, there is no gashing, the process proceeds from the above step S217 to step 8220, sets the charge discrimination flag FLAG (FLAG←1), and executes the program. Get out.

<Third Embodiment> FIGS. 6 to 8 show a third embodiment of the present invention, in which the battery 5 is charged in constant current charging mode.

In this third implementation, as shown in FIG. 7, a current sensor 18 is interposed between the positive terminal side of the battery 5 and the control circuit 4b of the vinerator 4, and the output of the current sensor 18 is controlled. The charging current of the battery 5 is detected by being connected to the driver compartment 1 of the ■/○ interno switch 24 of the device 20.

Further, as shown in FIG. 6, the battery of the control device 20 is
The functions related to the recharging control differ from those in the first embodiment described above in the charging setting stage 39 and the target generator rotation speed setting means 40, and only the differences will be explained below.

When the charging setting is 1,000 stages 39, the memory level 3 consisting of RAM 23 is set.
The charging flag FLAG of the predetermined address of No. 1 is determined, and the charging flag "L8G is "l.
, -lx The terminal voltage 1 of the battery 5 is compared with the lower limit value V1-, and when VT<Vl-, the target pinerator rotation speed setting 40 is instructed to execute the initial setting, and the ignition drive is set to 1,000 steps. 37. Output a charge start signal to the first and second relay drive means 38 to start the engine 2, start charging the above-mentioned battery 5, and further output a charge start signal to the delay stage 33, 31 After counting the set time (for example, 3 to IQsec) with the delay stage 33, that is, after the set time has elapsed from the start of charging by starting the engine, the current sensor 18 reads the charging current detected by J:. It's crowded. Further, when the battery 5 is already being charged (FLAG=1), the charging current detected by the current sensor 18 is read.

Then, the charging current 8 is the target setting current -L limit value 811 and the target setting current lower limit value A l. If AL>A or All<A, the comparison result is output to the target generator rotation speed setting 40.

Further, the three charge setting means are: A L≦A≦A I-1
If it is determined that this is the case, or if an execution instruction is issued from the low reactor operating amount setting stage 36a through the delay stage 33, the battery terminal voltage V1 is read and the battery terminal voltage VT exceeds the final charging voltage V11. When the gassing or gassing determining means 30 does not determine that gassing has occurred, the charging flag FLAG is cleared (Fl
-8G←O) and low 32 Tarinonokubu]. -T. At the same time, the low throttle valve 7a is moved to the fully closed position by the low reactor actuator 10 via the driving means 36b, and the ignition drive stage 37 and the first
, outputs a charging end signal to the second relay driving means 38, stops the engine 2, and ends charging.

In addition, the target generator rotation speed setting means 40 sets the target generator rotation speed Ni to an initial value NO (for example, 3000 p.
pm), and on the other hand, the comparison result of the above charging setting 39 is set to AI. >A, in order to increase the charging current A, the target generator rotation speed N is increased and updated by adding the set value, dN, to the current target generator rotation speed Ni stored in the memory 1 stage 31. (Ni <-Ni +dN), and in the case of AH (to avoid lowering the charging current 8), subtract the set value and dN from the current target generator rotation speed Ni to obtain the target generator rotation speed Ni. Set the update (N
t←Ni-IN), the charging current generated by the output of the generator 4 is controlled to be within the range between the target setting current upper limit value and the target setting current lower limit.

Next, the charging control procedure for the battery 5 in the constant current charging mode will be explained according to the flowchart of FIG.

In step S301, the state of the charging determination flag FLAG at a predetermined address in the RAM 23 is determined, and "l-AG=1" is determined.
,-! 11 That is, if the battery 5 is currently being charged, the process jumps from step S301 to step S309, and on the other hand, "l-8G=0," that is, the engine 2 is currently stopped and the battery 5 is not being charged. case,
The process advances from step S301 to step S302.

In step S302, the terminal voltage V of the battery 5 is read, and then in step S303, the
It is determined whether the battery terminal voltage VT read in step 02 is lower than the lower limit value V[.

In step S303 above, if VT≧V]-, exit the program; if VT<VL, step S303
3, proceed to step S304, set the target generator rotation speed Ni to the initial value NO, load it to a predetermined address in the RAM 2334, set the acticoator initial drive skewer corresponding to this initial value NO, and start the rotary actuator. At the same time, in step S305, the first relay RY+ and the second relay RY2 of the pinerator control circuit 4b are turned on to start the generator 4. At the same time, an ignition signal is output to the igniter 2b to start the engine 2 and start charging.

Next, proceed to step 8306 and count the counter l.
~(If C 1 is counted up and step S3
At 07, it is determined whether the value C1 has reached the set value CISET, and if C1<CISET, step 3306
If C1≧CIS[T, the process proceeds to step S308, where counters 1 to {ffj C1 are cleared, and the charging current A of the battery 5 is read from the output of the current sensor 18 in step S309.

Note that the delay time is set in steps 330G and 5307 above after a predetermined period of time (for example, 3 to 10 seconds) has elapsed after the engine has started, the engine rotational speed has stabilized, and the state of charge has stabilized. This is to read the charging current 8 from .

Next, in step S310, the charging current read in step S309 is determined to be within the range (AI-≦A≦AH>
If Δ1-≦A≦All, the process jumps to step S319.

On the other hand, the above S310T:A I. ＞A,
Alternatively, if it is determined that AH<A, the process proceeds to step S311, and compares the charging current read in step S309 with the target setting current lower limit value A+-, and determines that AL>A.
In this case, the process advances to step S312, reads out the target generator rotation speed Ni stored at a predetermined address in the RAM 23, and sets the target generator rotation speed Ni to 6N.
is added and the target generator rotation speed Ni is increased and updated (
N i <− N i + , d N ). However, if the battery charging current A is lower than the target setting current lower limit value AL, the generator rotation speed Ni is increased by a predetermined amount of 11i1JN in order to increase the charging current Δ.

Furthermore, if it is determined in step S311 that 36A>AH while A L≦A,-=J, step S31
3, the set value JN is subtracted from the target generator rotation speed Ni stored in the RAM 23, and the target generator rotation speed Ni is updated (Ni+-Ni-ZN). 1, the target setting current upper limit value Al for the battery charging current
If it is higher than l, the target generator rotational speed Ni is decreased by the set value IN so as not to reduce the charging current A.

Next, the process proceeds to step S314, where the output signal of the generator rotation speed sensor 12 is read to calculate the rotation speed NGE of the generator 4, and the process proceeds to step S315, where the target pinerator rotation speed set in step S312 or step S313 is calculated. The above slap S31 from Ni
The generator rotational speed NGE calculated in step 4 is subtracted to calculate the deviation Δ (Δ1Ni−NGE), and the operating amount applied to the rotary actuator 10 is set based on this deviation Δ.

Next, in step 8316, the count of the counter {target C
1 is counted up, and in step S317 it is determined whether the counter 1~lif]C1 has reached the set value C2SET. If CI<02SET, the process returns to step 8316, and if C1≧02SET, step 8318 The process proceeds to and clears the count value C1 of the counter.

Next, the process advances to step S319 to read the terminal voltage VT of the battery 5, and then the process proceeds to step S320, where it is determined whether the battery terminal voltage VT read in the step S319 has reached the final charge voltage 1, If VT > VH, the process jumps to step S323, and if V1≦V11, the process proceeds to step S321, where the output voltage E l of the light receiving element 13b provided inside the battery 5 is determined. Load.

Next, in step S322, the output voltage El of the light receiving element 13b is compared with the gashing determination reference value EO,
Determine whether gassing is occurring and determine whether EL < E
O, that is, when it is determined that gasing has occurred, the process proceeds from step S322 to step S323, where the charging determination flag "[^G" is cleared (FLAG←0), and in step S324, the ignition signal to the igniter 2b is cut. At the same time, the drive of the rotary actuator 10 is stopped, the engine 2 is stopped, and the first relay RYI and the second relay RY2 of the generator control circuit 4b are set to 0F to end charging the battery 5. Exit the program.

On the other hand, if it is determined in the above step S322 that [':LL-EO, that is, no gasing has occurred, the process proceeds from the above-mentioned slap S322 to step S325, and the charge determination flag rl8G of -12 is set to 1~ (Fl8G<-
1) Exit the program.

(Fourth embodiment) The fourth embodiment is charging in a constant current step-by-step charging mode,
-1 The charge setting means 3 in Fig. 6 is inscribed in the third embodiment described above.
8 and the target generator rotation speed setting 1,000 steps 39 have different functions.

However, for the third embodiment, the charge setting means 39 (first, when starting the engine 2 and charging the battery 5 for the first time, sets the initial setting to the target generator rotation speed setting 1,000 steps/10). At the same time, the charging setting current A1 for the charging current A is set to the initial value AO, and this charging setting current A
Add or subtract the beam width zA to 1 to obtain the target setting current limit A
II, l”l standard setting voltage 39 Set the flow lower limit value AL, respectively (AI<-AO, Al
l <-AI-MIA, Al t-A1-. dA).

Then, after a set time has elapsed from the start of charging by starting the engine, the charging current detected by the current sensor 18, the target set current upper limit 8H, and the target set current lower limit A
l. and outputs the comparison result to the target generalator rotation speed setting means 40.

Thereafter, if the bubbling end voltage V1 exceeds the charge end voltage 1 (for example, 15V), or if the gashing determining means 30 determines that gasing has occurred, a predetermined reduced current value AD is subtracted from the charging setting current A1. and decrease the charge setting current by 1 stepwise (AI <-
AI-AD).

Then, the charging setting current A1 is compared with 1 and the charging end value [-], and in the case of 81>8, the reset charging setting is Current A
By adding or subtracting the allowable width of 6A from 1 to 1, the target setting current upper limit value 811 and the target setting current lower limit value AL are respectively set.

After that, when the charge setting current becomes 40 or less to the charging end value, clear the charge flag FLAG (1
18G=0)
61], outputs a charging end signal to the ignition drive stage 37 and the first and second relay drive means 38, and outputs a charging end signal to the ignition drive stage 37 and the first and second relay drive means 38, :J
The engine 2 is stopped to terminate charging.

The charging control procedure for the battery 5 in this constant current staged charging mode (shown in flowchart 1 of FIG. 9) will now be described.

Steps S301 and S302 in the third embodiment are the same as steps S401 and S402, and then step S403
Proceed to , and if VT≧V1, (,1 program removed ()
, Vd<V1-, the process proceeds to step S404.

Proceeding to step S404, the charging setting current 81 is set to the preset initial value AO (AI = -AO >, and Y1 capacity width A8 is added to this charging setting current 81 to set the target setting current upper limit. At the same time as setting the value All (811←A1+, JA), set the target setting current lower limit value A1 by subtracting the allowable width JA from 1 to the charging setting current (A1{- to 1-AA),
Roughly, the target generator revolution number Ni is initialized to 1fi N
o (Ni4-NO), and store them at predetermined addresses of Rbe1 AM23.

Then, set the rotary actuator initial drive suspension to the above initial value NO, operate the rotary actuator 10, and let the slot 1 hell valve 7a reach the initial setting. At step S405, the first relay RYI and the second relay RY2 of the generator control circuit 4b are turned on to operate the Vineley Coupe as a starter, and an ignition signal is output to the igniter 2b to start the engine 2. Start charging.

Next, proceed to step 8406 and count the counter {
In step S407, it is determined whether the value C1 has reached the set value C2SET, and if C1<CISET, step 8406
If C1≧C
Read the charging current A.

And the third length example slap 8310~S319 and 1
Step S42 through steps 8410 to S419 of 11142
0, and the battery terminal voltage V1 reaches the charge end voltage Vl+
If VT>VH, the process jumps from step 31120 to step S423, and if v1≦l, the process proceeds from step S420 to step S421, where the The output voltage 131 of the light receiving element 13b is read.

Next item, ST 3422r, photodetector element 7-1
Compare the output voltage EL of El. <FO, that is, if it is determined that gassing has occurred, the process proceeds from the slap S422 to step S423, and if E1-≧EO, that is, it is determined that gassing has not occurred, the process jumps to step 8428 and sets the charging flag FLAG. (FLAG←1) and pull out the program.

On the other hand, in step S423, 1 is read out to the charge setting current stored at a predetermined address in the RAM 23, and a predetermined reduced current {direct AD is subtracted from the charge setting current A1 (the above charge setting current 81 is rewritten). Set 43 (A1←A1- to D), proceed to step S424,
It is determined whether the charge setting current 1, which was reset in step S423, has reached the charge end value A''.

In step S424, if A1≦8, the process proceeds from step S424 to step S425, where the Mitsubishi flag "L8G" is cleared (FLAG<-0), and at step 8426, the engine 2 is stopped and the battery 5 is transferred. Finish charging and exit the program.

On the other hand, in step S424, if AI > AF,
Proceeding from step S424 to step S421, the charging current 81 reset in step S423 is added or subtracted by the allowable width dA to set the target current upper limit All and the target current lower limit AL, respectively. (Al1
← A 1 -t , 6A, AL (-
AI-, 6A).

Then, at step 8428, the charging flag FLAG is set (FLAG←1) and the program is exited.

[Effects of the Invention] According to the present invention as described above, a battery charging farm equipped with a generator for charging a battery and an engine for driving the generator is provided with: 1. /1 te... charge setting means for setting an output value of the generator when charging the battery described in L; generator target rotation speed setting means for setting a target generator rotation speed of the generator that is illusory to the output value set by the charge setting means; Based on the generator rotation speed calculation means that calculates the rotation speed of the generator, the target generator rotation speed set by the generator target rotation speed setting means, and the rotation speed calculated by the generator rotation speed calculation means described in F, Since it is equipped with an engine rotation speed control means for controlling the engine rotation speed, the output of the pinneret can always be maintained appropriately corresponding to a predetermined charging speed without being affected by the load. Excellent effects such as improved charging efficiency of the battery are achieved.

[Brief explanation of the drawing]

To Figure 1/Figure 4 shows the first embodiment of the present invention, Figure 1 is a functional configuration diagram of a battery charging device, Figure 2 is a configuration diagram of a charging control system, and Figure 3 is a configuration of a hybrid vehicle. Figure, 4th
7 shows the charging control procedure, FIG. 5 shows the second embodiment of the present invention, /15 shows the charging control procedure, and FIGS. Fig. 6 is a functional block diagram of the battery charging device, Fig. 7 is a block diagram of the charging control system, and Fig. 8 is a block diagram of the charging control system.
The figure shows the charging control procedure, and FIG. 9 shows the fourth embodiment of the wooden invention, and the charging control procedure is shown in the diagram. 2...Engine 4...Generator 5...B, Tsuderi 32.39...Charging setting means 34.40...Target pinerator rotation speed setting 1,000 steps 35.
...Generator rotation speed calculation 1,000 stages 36...Engine rotation speed control means N1...Target generator rotation speed NGE...Generator rotation speed 4 6 5S JP-A-3 169203 (16)

Claims (1)

[Scope of Claims] A battery charging device comprising a generator for charging a battery and an engine for driving the generator, comprising a charge setting means for setting an output value of the generator when charging the battery; and a charge setting means for setting the output value of the generator when charging the battery. a target generator rotation speed setting means for setting a target generator rotation speed of the generator for the output value set in the generator; a generator rotation speed calculation means for calculating the rotation speed of the generator; and a target set by the generator target rotation speed setting means. A battery charging device comprising: engine rotation speed control means for controlling the rotation speed of the engine based on the generator rotation speed and the rotation speed calculated by the generator rotation speed calculation means.