JP5526527B2 - Charging apparatus, charging control program, and charging method - Google Patents

Description

  The present invention relates to a charging device, a charging control program, and a charging method for charging a plurality of batteries.

  Conventionally, when charging each battery in a device using a plurality of batteries, a charging method in which each battery is fully charged in order has been performed, but at this point in time during charging with this method , A battery that has been fully charged and a battery that has not yet been charged will be mixed, and the device cannot operate until all the batteries are fully charged, so it takes a long time for the device to become operational, There was a problem of poor usability.

As what solves this, the thing of patent document 1 is known, for example. When charging the batteries B <b> 1 to B <b> 4, the charging device charges the battery B <b> 1 for a certain period of time and then charges the next battery B <b> 2 with the same time. Charging the batteries B1 to B4 over a certain period of time is defined as a charging cycle T, and the charging cycle T is repeated until all the batteries are fully charged, whereby all the batteries are finally fully charged. It is assumed that the remaining amount can be charged in a balanced manner on average.
JP 2000-324709 A

  By the way, in a device using a plurality of batteries, the size of the load to be connected may differ for each of the batteries B1 to B4. In this case, even if the batteries B1 to B4 have the same capacity, the battery at a certain point in time. The remaining amount will be different. However, in the above-described conventional charging device, the batteries B1 to B4 are charged with the same amount of charge sequentially without considering the remaining battery level at the time of starting charging or during charging. .

  Therefore, if there is a difference in the remaining amount of the batteries B1 to B4, charging is performed in the charging cycle T with this difference occurring. Therefore, it will be charged in a certain amount while maintaining the difference in remaining amount at the start of charging, and as a result, it is impossible to charge each battery remaining in a balanced manner until the device becomes operable There is a fear that the time will be extended again.

  Furthermore, if the battery B1 having the smallest remaining battery among the batteries B1 to B4 at the start of charging is B1, the battery B1 is always the most without any change in the order of the remaining capacity during charging according to the charging cycle T. The battery is low.

  The battery B1 having the smallest remaining battery level among the batteries B1 to B4 at the start of charging as described above has a smaller remaining battery level than the other batteries B2 to B4 because the connected load value is large. It is in a state. Therefore, since the value of the load to be connected is large, the value of the necessary remaining battery level at which the load can operate is also large. However, the battery B1 is always the battery with the least remaining battery level during charging in the charging cycle T, as described above, even though the value of the required remaining battery level in which the corresponding load can operate is large. , It is not possible to charge the battery to the required remaining battery capacity at an early stage.

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a charging device, a charging control program, and a charging method that enable early charging to the required remaining battery level.

Wherein is a problem in the charging device according to the invention of claim 1, wherein in order to resolve, a charging apparatus for charging a plurality of batteries, and detecting means for detecting a voltage at charging start of each battery, the In each battery, the charging voltage ratio of the voltage detected by the detecting means to the full voltage of each battery is calculated, and the ratio of the charging voltage ratio to the size of the load connected to each battery is calculated. Based on the calculation means, the ratio ratio calculated by the calculation means, the order determination means for determining at least the first and second ranks, and the battery of the charge order 1 determined by the order determination means is charged. And charging means.

Also, in the charging apparatus according to the second aspect of the present invention, the order determination means determining the charging order to perform the charging in order the percentage ratio is small that is calculated by the calculating means It is characterized by.
In the charging device according to the third aspect of the present invention, the size of the load connected to each of the batteries is different.
Moreover, in the charging device according to the invention of claim 4 , the ratio ratio of the batteries in the charging order 1 charged by the charging means is greater than or equal to a predetermined ratio ratio. The first determination means for determining whether or not the voltage exceeds the ratio of the voltage of the battery of charge rank 1 exceeds the ratio of the battery of charge rank 2 by a predetermined ratio or more by the first determination means. And charging control means for re-operating the rank determining means when it is determined that the order has been determined.
Further, in the charging device according to the invention described in claim 5 , the charging control means repeatedly performs the charging process based on the charging order determined by the restarted order determining means. And
The charging device according to the invention of claim 6 further comprises second determination means for determining whether or not a charge amount of each battery exceeds a first predetermined value, and the charge control means. When the second determination means determines that the amount of charge of each battery has exceeded the first predetermined value, the batteries are sequentially moved for a predetermined time without restarting the order determination means. It shifts to the charge process to charge, It is characterized by the above-mentioned.
In the charging device according to the seventh aspect of the invention, it is determined whether or not each battery is fully charged, or whether or not the charge amount of each battery exceeds a second predetermined value. 3, and the charge control means, when the third determination means determines that each of the batteries is fully charged or the amount of charge exceeds the second predetermined value, The charging end process is performed without re-operating the order determination means.

In the charging device according to the eighth aspect of the present invention, the first determination means further determines whether or not the battery of the battery of the charging order 1 is fully charged, and the charge control means Is characterized in that, when it is determined by the first determination means that the batteries of the charge rank 1 are fully charged, the rank determination means is operated again.

In the charging control program according to the ninth aspect of the present invention, a computer having a charging device for charging a plurality of batteries includes a detection means for detecting a voltage at the start of charging of each of the batteries, and each of the batteries. Calculating a charging voltage ratio of the voltage detected by the detecting means to a full voltage of each battery, and calculating a ratio of the charging voltage ratio to the magnitude of a load connected to each battery. And rank determining means for determining at least the first and second ranks of charging based on the ratio ratio calculated by the calculating means, and charging means for charging a battery of the charging rank 1 determined by the rank determining means. It is characterized by making it function as.

Further, in the charging method according to the invention of claim 10, wherein a charging method in the charging apparatus for charging a plurality of batteries, a detection step of detecting a voltage at charging start of each cell, each In the battery, the charge voltage ratio of the voltage detected in the detection step to the full voltage of each battery is calculated, and the ratio of the charge voltage ratio to the magnitude of the load connected to each battery is calculated. And a rank determination step for determining at least the first and second ranks based on the ratio calculated by the calculation means, and charging for charging a battery of the charge rank 1 determined by the rank determination step. And a process.

According to the present invention, it is possible to charge quickly to required battery level.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing an electrical configuration of a projector 1 common to the embodiments of the present invention. The projector 1 operates using a rechargeable battery unit 29 as a power source, and includes a battery charging circuit 33, a voltage detection circuit 28, a control unit 11, an input / output interface 12, an image conversion unit 13, a display encoder 14, and a display. It has a drive unit 15 and the like.

  The battery unit 29 is composed of a first battery 291, a second battery 292, a third battery 293, and a fourth battery 294 that are provided independently, and each of these batteries 291 to 294 supplies power to each part of the projector 1. Supply. The battery charging circuit 33 is connected to an AC power source, converts AC current into DC current, and charges the first to fourth batteries 291 to 294 individually as will be described later. , A circuit for detecting voltages of the first to fourth batteries 291 to 294. The control unit 11 detects the remaining battery levels of the first to fourth batteries 291 to 294 based on the voltage detected by the voltage detection circuit 28.

  On the other hand, image signals (image data) of various standards input from the input / output connector unit 16 are unified into image signals of a predetermined format suitable for display by the image conversion unit 13 via the input / output interface 12 and the system bus 17. Then, it is sent to the display encoder 14. The display encoder 14 develops and stores the transmitted image signal in the video RAM 18, generates a video signal from the stored contents of the video RAM 18, and outputs the video signal to the display driving unit 15.

  The display driving unit 15 to which the video signal is input from the display encoder 14 drives the display element 19 which is a spatial light modulation element (SOM) at an appropriate frame rate in accordance with the transmitted image signal. Then, the light bundle emitted from the light source device 20 having a lamp is incident on the display element 19 through the light source side optical system, thereby forming an optical image with the reflected light of the display element 19, and the projection side optical system. An image is projected and displayed on a screen (not shown) through the movable lens group 21. The movable lens group 21 of the projection side optical system is driven by a lens motor 22 for zoom adjustment and focus adjustment. The light source device 20 includes an R-LED 20R that emits R (red) light, a G-LED 20G that emits G (green) light, and a B-LED 20B that emits B (blue) light.

  The image compression / decompression unit 23 performs recording processing for compressing the luminance signal and the color difference signal in the image signal by processing such as ADTC and Huffman coding, and writing the data onto a memory card 24 that is a detachable recording medium. The image data recorded in the memory card 24 is read out, the individual image data constituting a series of moving images is expanded in units of one frame, sent to the display encoder 14 via the image conversion unit 13, and stored in the memory card 24. Based on the above, it is possible to display a moving image or the like.

  The control unit 11 controls the operation of each circuit in the projector 1, and includes a CPU and its peripheral circuits, a ROM 111, a RAM 112, and the like. The ROM 111 stores programs such as various settings, programs and data shown by flowcharts described later, and the RAM 112 is used as a work memory or the like.

  In addition, an audio processing unit 30 is connected to the control unit 11 via a system bus 17, and the audio processing unit 30 includes a sound source circuit such as a PCM sound source, and converts audio data into analog data in the projection mode and the playback mode. The loudspeaker 31 can be driven to emit loud sounds.

  The key / indicator unit 25 includes a main key and an indicator provided in a main body case or the like, a lamp that is turned on when the projector 1 is activated, a display unit, and the like. These indicators and the like are displayed and blinked by the control unit 11, and operation signals for various keys are sent to the control unit 11. The key operation signal from the remote controller is received by the Ir receiver 26, demodulated by the Ir processor 27, and the code signal is sent to the controller 11. The control unit 11 controls the light source control circuit 32 to control the R-LED 20R, the G-LED 20G, and the B-LED 20B in a time-sharing manner according to the image signal.

  In the present embodiment, the first battery 291 is connected to the R-LED 20R, the second battery 292 is connected to the G-LED 20G, the third battery 263 is connected to the B-LED 20B, and the fourth battery 294 is connected to the system. Power is supplied as a load. The system means the entire projector 1 excluding the R-LED 20R, the G-LED 20G, and the B-LED 20B. In the first embodiment, it is desirable that the voltage values of the batteries 291 to 294 when fully charged are the same.

  In the first embodiment having the above configuration, the control unit 11 of the projector 1 executes processing as shown in the flowchart of FIG. 2 based on a program stored in the ROM 111 when the power is turned on. That is, the battery charging circuit 33 is activated to sequentially test-charge the batteries 291 to 294, and the voltage detection circuit 28 is activated to charge voltage values (current voltages) that are current voltages of the batteries 291 to 294. ) Is measured (step SA1). Then, the measured charging voltage values of the batteries 291 to 294 are stored in the RAM 112 (step SA2).

  Further, the charging voltage values of the batteries 291 to 294 stored in the RAM 112 are compared to determine the charging order (step SA3). In the present embodiment, the charging order is the order in which the charging voltage value is low. Therefore, the battery with the lowest charge voltage value is determined as rank 1, and the battery with the next lowest charge voltage value is determined as rank 2.

  The determination of the charging order in step SA3 may be performed by determining at least the ranks 1 and 2 in the four batteries 291 to 294, but the ranks 1 to 4 may all be determined.

  Next, the main charging is started from the battery of rank 1, that is, the main charging is started from the battery having the lowest charging voltage value at the present time (step SA4). Further, the voltage detection circuit 28 detects the charging voltage value of the first rank battery starting the main charging, and sets this as V1, and the charging voltage value V1 of the first rank battery is “battery charging voltage value of the second rank”. + Α ”, that is, if the battery charge voltage value of rank 2 is V2, it is determined whether V1 = V2 + α or whether the battery is fully charged (step SA5).

  Then, the main charging (step SA4) is continued until the determination in step SA5 becomes YES, and if the charging voltage value V1 becomes “V2 + α” or becomes full charging and YES, charging is performed. At the same time, the battery charge voltage value of rank 1 stored in the RAM 112 is updated (step SA6). Accordingly, the battery charge voltage value V1 of rank 1 stored in the RAM 112 is updated to “V2 + α” or “full charge”.

  Therefore, based on the charging voltage values of the batteries 291 to 294 stored in the RAM 112 and updated in step SA6, it is determined whether or not all the batteries are fully charged (step SA7). Then, the loop of steps SA3 to SA7 is repeated until all the batteries are fully charged.

  Therefore, the battery having the lowest charging voltage value is charged by the processing in steps SA3 to SA7, and this charging is performed when the charging voltage value V2 of the next lowest charging voltage value exceeds α or more. Stopped at the time of overtaking charging. Further, by repeating the loop of steps SA3 to SA7, the battery having the lowest charge voltage value is sequentially charged until the charge voltage value becomes “V2 + α”.

  Therefore, in each of the batteries 291 to 294, the battery with the lowest charging voltage value is sequentially overcharged until it becomes “V2 + α”. At this time, since the full charge amount of each of the batteries 291 to 294 is the same, the battery with the lowest charge voltage value is sequentially charged until it reaches “V2 + α”. Regardless of the difference, the batteries 291 to 294 are charged so that the charging rate is uniform, and as a result, it is possible to charge each of the batteries 291 to 294 to the required remaining battery level at an early stage.

  When all of the batteries 291 to 294 are fully charged by repeating the loop of steps SA3 to SA7, the charging is terminated and the batteries 291 to 294 are connected to the loads described above. The process according to is terminated.

  In the present embodiment, the charging is terminated when all the batteries are fully charged according to the determination in step SA7. However, the charging is performed when all the batteries reach a predetermined charging amount. May be terminated. Thereby, the connection switching to each load can be performed at an early stage, and the use of the projector 1 can be started at an early stage.

(Second Embodiment)
FIG. 3 is a flowchart showing a processing procedure in the second embodiment of the present invention. In the second embodiment, it is desirable that the full voltage values, which are voltage values when the batteries 291 to 294 are fully charged, are different from each other.

  That is, the battery charging circuit 33 is activated to sequentially test-charge the batteries 291 to 294, and the voltage detection circuit 28 is activated to charge voltage values (current voltages) that are current voltages of the batteries 291 to 294. ) Is measured (step SB1). Then, the measured charging voltage values of the batteries 291 to 294 are stored in the RAM 112 (step SB2).

  Further, based on the charging voltage value of each battery 291 to 294 stored in the RAM 112 and the full voltage value, a voltage ratio that is a ratio of the current voltage to the full voltage value of each battery 291 to 294 is calculated, for example, as a percentage. At the same time, the calculated voltage ratio is stored in the RAM 112 (step SB3). Further, the charging order is determined based on the voltage ratio of each of the batteries 291 to 294 stored in the RAM 112 (step SB4). In the present embodiment, the charging order is the order in which the voltage ratio is low. Therefore, the battery with the lowest voltage ratio is determined as rank 1, and the battery with the next lowest voltage ratio is determined as rank 2.

  It should be noted that, in the determination of the charging order in step SB4, at least the ranks 1 and 2 may be determined in the four batteries 291 to 294, but all the ranks 1 to 4 may be determined.

  Next, the main charge is started from the battery of rank 1, that is, the main charge is started from the battery having the lowest voltage ratio at the present time (step SB5). Further, it is determined whether or not the voltage ratio of the rank 1 battery that has started the main charge is “voltage ratio + rank of rank 2 + α” or whether the battery is fully charged (step SB6).

  Then, the main charge (step SB5) is continued until the determination in step SB6 becomes YES, and the voltage ratio becomes “voltage ratio of rank 2 + α” or full charge (voltage ratio = 100%). If YES, the charging is stopped and the voltage ratio in the battery of rank 1 stored in the RAM 112 in step SB3 is updated (step SB7). Therefore, the voltage ratio of the battery of rank 1 stored in the RAM 112 is updated to “voltage ratio of rank 2 + α” or “full charge”. “Α” may be either% or a voltage value.

  Therefore, based on the voltage ratio of the batteries 291 to 294 stored in the RAM 112 and updated in step SB7, it is determined whether or not all the batteries are fully charged (step SB7). Then, the loop of steps SB4 to SB8 is repeated until all the batteries are fully charged.

  Therefore, by the processing in steps SB4 to SB8, the battery having the lowest voltage ratio is charged, and this charging is performed when the voltage ratio of the battery having the next lowest voltage ratio is exceeded by α or more (overtaking charging is performed). Is stopped at the time. In addition, by repeating the loop of steps SB4 to SB7, the battery having the lowest voltage ratio is sequentially charged until the voltage ratio becomes “voltage ratio of rank 2 + α”.

  Therefore, in each of the batteries 291 to 294, the battery with the lowest voltage ratio is sequentially overcharged until it reaches the “rank 2 voltage ratio + α”. For this reason, even if the full charge amount (full voltage value) of each of the batteries 291 to 294 is different, the battery 291 is sequentially charged until the battery having the lowest voltage ratio becomes “the voltage ratio of rank 2 + α”. ˜294 are charged so that the charging rate is uniform, and as a result, each of the batteries 291 to 294 can be charged to the required remaining battery level at an early stage.

  Then, by repeating the loop of steps SB4 to SB8, when all the batteries 291 to 294 are fully charged, the charging is terminated and the batteries 291 to 294 are connected and switched to the loads described above. The process according to is terminated.

(Third embodiment)
FIG. 4 is a flowchart showing a processing procedure in the third embodiment of the present invention. In the third embodiment, the full voltage values, which are the voltage values when the batteries 291 to 294 are fully charged, may be the same or different from each other.

  That is, the battery charging circuit 33 is activated to sequentially test-charge the batteries 291 to 294, and the voltage detection circuit 28 is activated to charge voltage values (current voltages) that are current voltages of the batteries 291 to 294. ) Is measured (step SC1). Then, the measured charging voltage values of the batteries 291 to 294 are stored in the RAM 112 (step SC2).

Moreover, the charging voltage value between each battery 291-294 memorize | stored in this RAM112 is compared, and the ratio (charging voltage ratio) of the charging voltage value of each battery is calculated by ratio, for example (step SC3). Thereby, for example, the charging voltage ratio of the first to fourth batteries 291 to 234 is calculated as a ratio as described below.
Charging voltage ratio = 1: 2: 3: 4: battery = 1: 2: 3: 4

Next, the ratio (load ratio) of the magnitude of the load connected to the first to fourth batteries 291 to 294 is calculated (step SC4). Here, as described above, the first battery 291 uses the R-LED 20R, the second battery 292 uses the G-LED 20G, the third battery 293 uses the B-LED 20B, and the fourth battery 294 uses the system as a load. Therefore, for example, as described below, the load ratio of each of these loads is calculated as a ratio.
Load ratio = 20R: 20G: 20B: System = 2: 3: 3: 5

Further, in each battery, the ratio (ratio ratio) of the charging voltage ratio to the load ratio is calculated and stored in the RAM 112 (step SC5).
That is, in this example, as described above, (1) charge voltage ratio = first: second: third: fourth battery = 1: 2: 3: 4
(2) Load ratio = R-LED: G-LED: B-LED: System = 2: 3: 3: 5
The connection relationship between the battery and the load is (a) the first battery: R-LED
(B) Second battery: G-LED
(C) Third battery: B-LED
(D) Since the fourth battery is a system, the following ratio ratio, which is the ratio of the ratio of the size of the load connected to each battery, to the ratio of the charging voltage value of each battery is calculated. .
(A) 1st battery = 1/2 = 0.5
(B) 2nd battery = 2/3 = 0.67
(C) 3rd battery = 3/3 = 1
(D) 4th battery = 4/5 = 0.8
This value indicates whether the amount of charge of the battery is an appropriate value with respect to the size of the load connected to the battery. The smaller the value, the smaller the amount of charge for the connected load. It is in a state and indicates a state that requires immediate charge.

  Furthermore, a charging order is determined based on these ratios (step SC6). In the present embodiment, the charging order is the order in which the ratio ratio is small. Accordingly, the first battery 291 having the smallest ratio ratio of “0.5” is determined as rank 1, and the second battery 292 having the next ratio ratio “0.67” is determined as rank 2.

  In addition, in the determination of the charging order in step SC4, at least the ranks 1 and 2 may be determined in the four batteries 291 to 294, but all the ranks 1 to 4 may be determined.

  Next, the main charge is started from the battery of rank 1, that is, the main charge is started from the battery having the smallest ratio at the present time (step SC7). Further, it is determined whether or not the ratio ratio of the first rank battery that has started the main charge is “ratio ratio of the second rank + α”, or whether or not the battery is fully charged (step SC8).

  Then, the main charge (step SC7) is continued until the determination in step SC8 becomes YES, and if the ratio becomes “ratio 2 of rank 2 + α” or if full charge occurs and becomes YES. The charging is stopped, and the ratio of the rank 1 batteries stored in the RAM 112 in step SC5 is updated (step SC9). Therefore, the ratio ratio of the rank 1 batteries stored in the RAM 112 is updated to “rank ratio 2 ratio + α” or “full charge”. Next, it is determined whether or not all the batteries are fully charged (step SC10), and the loop of steps SC6 to SC10 is repeated until all the batteries are fully charged.

  Therefore, by the processing in steps SC6 to SC10, the battery having the smallest ratio is charged, and this charging is performed when the ratio ratio of the battery having the next smallest ratio is exceeded by α or more (overtaking charging). Is stopped at the time. Further, by repeating the loop of steps SC6 to SC10, charging is sequentially repeated until the ratio ratio becomes “ratio ratio 2 of rank 2 + α” for the battery having the smallest ratio ratio.

  Therefore, in each of the batteries 291 to 294, the battery with the smallest ratio is sequentially overcharged until it reaches the "rank ratio 2 ratio ratio + α". For this reason, even if the full charge amount (full voltage value) of each of the batteries 291 to 294 is different, the battery with the smallest ratio ratio is sequentially charged until the ratio of the rank 2 becomes the ratio ratio + α. 294 is charged so that the charging rate is uniform in relation to the load, and as a result, each of the batteries 291 to 294 can be charged to the required remaining battery level at an early stage.

  When all the batteries 291 to 294 are fully charged by repeating the loop of steps SC6 to SC10, the charging is terminated and the batteries 291 to 294 are connected and switched to the loads described above. The process according to is terminated.

(Fourth embodiment)
FIG. 5 is a flowchart showing a part of the processing procedure in the fifth embodiment of the present invention. That is, in step SD1 following steps SA6, SB7, and SC9 in the first to third embodiments described above, it is determined whether or not the charged amounts of all the batteries 291 to 294 have exceeded a predetermined value. If not, the process returns to steps SA3, SB4, and SC6 in the first to third embodiments.

  When the charge amount of all the batteries 291 to 294 exceeds a predetermined value, the process proceeds to normal charging (step SD2). Here, normal charging is charging by any of the known charging methods other than the charging shown in the first to third embodiments described above, such as charging by the charging method described in Patent Document 1 described above. is there. In charging by the charging method described in Patent Document 1, when charging each of the batteries 291 to 294, after charging the first battery 291 for a certain period of time, the charging to the next third battery 292 is performed at the same time. Charge the battery. Charging the batteries 291 to 294 with this fixed time is defined as a charging cycle T, and the charging cycle T is repeated until all the batteries 291 to 294 are fully charged.

  When all the batteries 291 to 294 are fully charged by repeating the normal charging with the charging cycle T, the charging is terminated and the batteries 291 to 294 are connected and switched to the loads described above. The process according to is terminated.

  Therefore, according to the fourth embodiment, when the determination in step SD1 is YES and the charge amount of all the batteries 291 to 294 exceeds a predetermined value, the charge voltage value of each battery is measured. Since there is no need to do this, the processing can be facilitated.

  In the fourth embodiment, the charging is terminated when all the batteries are fully charged. However, in step SD1, whether all the batteries have exceeded the first predetermined value or not is determined. In SD3, it is determined whether or not all the batteries have exceeded the second predetermined value (however, the first predetermined value <the second predetermined value), and the charging is terminated when the batteries exceed the second predetermined value. It may be.

  Moreover, in the above-mentioned embodiment, although the case where the battery was four was shown, as long as it is plural, it may be how many. Furthermore, although the case where the present invention is applied to a projector has been described in the above-described embodiment, it is needless to say that the present invention can be applied to various electronic devices that operate using a battery as a power source without being limited to the projector.

1 is a block diagram showing a circuit configuration of a projector according to an embodiment of the present invention. It is a flowchart which shows the process sequence in the 1st Embodiment of this invention. It is a flowchart which shows the process sequence in the 2nd Embodiment of this invention. It is a flowchart which shows the process sequence in the 3rd Embodiment of this invention. It is a flowchart which shows a part of process sequence in the 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projector 11 Control part 19 Display element 20 Light source device 20B B-LED
20G G-LED
20R R-LED
DESCRIPTION OF SYMBOLS 21 Movable lens group 22 Lens motor 23 Image compression / decompression part 28 Voltage detection circuit 29 Battery unit 33 Battery charging circuit 111 ROM
112 RAM

Claims (10)

A charging device for charging a plurality of batteries,
Detecting means for detecting a voltage at the start of charging of each battery;
In each battery, the charging voltage ratio of the voltage detected by the detecting means to the full voltage of each battery is calculated, and the ratio of the charging voltage ratio to the size of the load connected to each battery is calculated. Calculating means for
Based on the ratio ratio calculated by the calculating means, order determining means for determining at least first and second order charging orders;
Charging means for charging the battery of the charging order 1 determined by the order determining means;
A charging device comprising: The order determination unit, the charging device according to claim 1, wherein determining said charge order to perform the charging in order the percentage ratio is small that is calculated by the calculation means. Charging apparatus according to claim 1 or 2, wherein the magnitude of the load connected to the battery and being different from each. A first determining means said proportional ratio of a battery charged the charging rank 1, to determine whether the percentage of battery charge rank 2 exceeds predetermined ratio or more ratio by said charging means,
When it is determined by the first determination means that the ratio of the voltages of the batteries in the charging order 1 exceeds the ratio of the batteries in the charging order 2 by a predetermined ratio , the order determination means is restarted. The charging device according to any one of claims 1 to 3 , further comprising a charging control unit for controlling the charging device. The charge control unit on the basis of the charging order determined by the order determining means is operated again, the charging device according to any one of claims 1-4, characterized in that to perform repeated charging process. A second determination means for determining whether or not a charge amount of each battery exceeds a first predetermined value;
The charge control means sets each battery to a predetermined level without re-operating the order determination means when the second determination means determines that the amount of charge of each battery exceeds the first predetermined value. charging apparatus according to claim 1 to 5, characterized in that the transition to the charging process of sequentially charging each time. And further comprising third determination means for determining whether or not each of the batteries is fully charged, or whether or not the charge amount of each battery exceeds a second predetermined value,
The charge control means re-activates the order determination means when the third determination means determines that each of the batteries is fully charged or the amount of charge exceeds the second predetermined value. without charging apparatus according to claim 1-6, characterized in that to perform the charge ending processing. The first determination means further determines whether or not the battery of the battery in the charging order 1 is fully charged,
2. The charge control unit, when the first determination unit determines that the battery of the battery of the charging order 1 is fully charged, the order determination unit is reactivated. The charging device according to any one of to 7 . A computer having a charging device for charging a plurality of batteries;
Detecting means for detecting a voltage at the start of charging of each battery;
In each battery, the charging voltage ratio of the voltage detected by the detecting means to the full voltage of each battery is calculated, and the ratio of the charging voltage ratio to the size of the load connected to each battery is calculated. Calculating means for
Based on the ratio ratio calculated by the calculating means, order determining means for determining at least first and second order charging orders;
A charge control program that functions as a charging means for charging a battery of charge order 1 determined by the order determination means. A charging method in a charging device for charging a plurality of batteries,
A detection step of detecting a voltage at the start of charging of each battery;
In each battery, the charging voltage ratio of the voltage detected in the detection step to the full voltage of each battery is calculated, and the ratio of the charging voltage ratio to the size of the load connected to each battery is calculated. A calculation step to perform,
Based on the ratio ratio calculated by the calculating means, a rank determining step for determining at least the first rank and the second rank charge rank,
And a charging step of charging the battery of the charging order 1 determined by the order determination step.

Images