JP4659089B2 - Battery charge / discharge equipment - Google Patents

Description

  The present invention relates to a battery charging / discharging device, and more particularly to a battery charging / discharging device that completes discharging, charging, and overcharging processes at once.

  In a conventional battery manufacturing procedure, a process of charging and discharging a battery is performed to activate internal chemicals in the battery and improve their performance. However, during the discharge process, some of the energy is dissipated in the form of heat, making energy recyclability inefficient (about 20-60%) and increasing investment in equipment. A battery is known as an energy storage device and its charge / discharge procedure mainly includes three phases: discharge (at 100%), recharge (at 100%) and overcharge (at 15-200%). . In general, these three working phases are performed on different machines at different times. Such conventional procedures are not only time consuming but also have the problem of low efficiency.

  FIG. 5 shows a conventional battery charge / discharge device 10 connected to the battery pack 11. The positive terminal of the charging / discharging device 10 is connected to the positive terminal of the battery pack 11, the negative terminal of the charging / discharging device 10 is connected to the negative terminal of the battery pack 11, and the battery pack 11 is connected in series to 16 pieces. Consists of a battery. By reversing the direction in which the current flows, the charging / discharging device 10 can charge or discharge the battery. During the charging process, the current flows from the positive terminal of the charging / discharging device 10 to the positive terminal of the battery pack 11, and during the discharging process, the current flows. Flows from the negative terminal of the charge / discharge device 10 to the negative terminal of the battery pack 11. The charging / discharging device 10 has a voltage of DC 300V and a current of ± 1.5A. Each battery has a voltage of 12V and a current of 7Ah. During the operation of the above equipment, the charging / discharging procedure can be shown as follows.

Table 1. Charging / discharging procedure of conventional charging / discharging equipment

Table 2. Relationship between Time and Voltage in Battery Pack in Conventional Charge / Discharge Equipment As shown in Tables 1 and 2, the total time required for the charge / discharge procedure is 15 hours, and the total ampere hours is 3.24 Ah. The electrical energy required for a single process can be obtained by V × T × I, and the total electrical energy required during the charge / discharge procedure is the sum of the energy required during the discharge, recharge, and overcharge processes. The electrical energy required during the process is estimated at a reuse rate of 30%. Therefore, the total electrical energy required during this procedure is −1228.6 Wh × 30% + 838.1 Wh + 1321.6 Wh = 1791.1 Wh and the electrical energy required for a single battery is 1791.1 Wh / 16 = 120 Wh / It becomes a piece.

It is an object of the present invention to provide a battery charge / discharge device that uses only one charger to complete the entire charge / discharge procedure.
Another object of the present invention is to provide a battery charge / discharge device that can absorb 100% of the energy discharged by the discharge battery, and thus can reduce the device cost.

  In order to achieve the above object, the battery charge / discharge device of the present invention includes at least one first charger, at least one discharge battery, at least one recharge battery, and at least one overcharge battery. The discharge battery is connected in the reverse direction to the first charger, the recharge battery and the overcharge battery are connected in the forward direction to the first charger, at least one first charger, at least one discharge battery, At least one rechargeable battery and at least one overcharged battery are connected in series to form a closed loop.

  The negative terminal of the discharge battery of this device is connected to the positive terminal of the first charger, the positive terminal of the discharge battery is connected to the positive terminal of the recharge battery, and the negative terminal of the recharge battery is connected to the positive terminal of the overcharge battery. The negative terminal of the overcharged battery is connected to the negative terminal of the first charger.

  The battery charging / discharging device of the present invention further includes a second charger, the positive terminal of the second charger is connected to the negative terminal of the recharge battery and the positive terminal of the overcharge battery, and the negative terminal of the second charger. The terminal is connected to the negative terminal of the first charger and the negative terminal of the overcharge battery, and the second charger is connected in parallel to the first charger and the overcharge battery.

  Compared to conventional battery charge / discharge devices, the device of the present invention has a higher reuse rate during the discharge process. Also, the total time required for the present invention is shortened. Furthermore, the present invention requires only one charger to complete the procedure and requires less energy than conventional equipment. Thus, the present invention is advantageous in reducing equipment cost and total energy and time required, while at the same time, the present invention improves the reuse rate during the discharge process.

  FIG. 1 shows a block diagram according to a first embodiment of the present invention. As shown in FIG. 1, the battery charge / discharge device 100 of the present invention includes a first charger 1, a discharge battery 2, a recharge battery 3, and an overcharge battery 4. The negative terminal of the discharge battery 2 is connected to the positive terminal of the first charger 1, the positive terminal of the discharge battery 2 is connected to the positive terminal of the recharge battery 3, and the negative terminal of the recharge battery 3 is the overcharge battery 4. Connected to the positive terminal, the negative terminal of the overcharge battery 4 is connected to the negative terminal of the first charger 1. Therefore, with this connection method, the first charger 1, the discharge battery 2, the recharge battery 3, and the overcharge battery 4 can be connected in series to form a closed loop.

  The negative terminal of the discharge battery 2 is connected to the positive terminal of the first charger 1. That is, the discharge battery 2 is connected to the first charger 1 in the reverse direction, and thus the discharge battery 2 is discharged during the charging process of the device 100. For the rechargeable battery 3, its positive terminal is connected to the positive terminal of the discharge battery 2. That is, the recharge battery 3 is connected to the first charger 1 in the forward direction, and therefore, the recharge battery 3 is charged during the charging process of the device 100. For the overcharge battery 4, its positive terminal is connected to the negative terminal of the recharge battery 3. That is, the overcharge battery 4 is connected to the first charger 1 in the forward direction, and thus the overcharge battery 4 is charged during the charging process of the device 100. Further, the overcharge battery 4 is adjusted to be connected in parallel and forward to the charger 1 so that the entire series connection loop has a positive voltage so that the first charger 1 operates properly. May be. Moreover, you may adjust the charge of the overcharge battery 4 according to the amount of parallel connection. As a result, the first charger 1 of the present invention can recharge the recharge battery 3 using the voltage discharged from the discharge battery 2 and reused. At the same time, the first charger 1 can operate properly by adjusting the charge of the overcharged battery 4, thus completing the charge / discharge procedure within the battery manufacturing process.

  FIG. 2 shows a block diagram according to a second embodiment of the present invention. The second embodiment is different from the first embodiment in that the second charger 5 is further included. The positive terminal of the second charger 5 is connected to the negative terminal of the recharge battery 3 and the positive terminal of the overcharge battery 4. The negative terminal of the second charger 5 is connected to the negative terminal of the first charger 5 and the negative terminal of the overcharge battery 4. With this connection method, the second charger 5 can be connected to the first charger 1 and the overcharge battery 4 in parallel. The second charger 5 is used to adjust the charge charge according to the standard of each charge / discharge battery.

  FIG. 3 shows a circuit diagram according to a third embodiment of the present invention. The battery charge / discharge device 100 of the present invention includes a first charger 1, a discharge battery pack 6, a recharge battery pack 7, and an overcharge battery pack 8. Each of discharge battery pack 6, recharge battery pack 7 and overcharge battery pack 8 is composed of a plurality of batteries. The negative terminal of the discharge battery pack 6 is connected to the positive terminal of the first charger 1, the positive terminal of the discharge battery pack 6 is connected to the positive terminal of the recharge battery pack 7, and the negative terminal of the recharge battery pack 7 is excessive. The charge battery pack 8 is connected to the positive terminal, and the overcharge battery pack 8 has a negative terminal connected to the negative terminal of the first charger 1. Therefore, according to this connection method, the first charger 1, the discharge battery pack 6, the recharge battery pack 7 and the overcharge battery pack 8 can be connected in series to form a closed loop.

  The serial connection of the first charger 1, the discharge battery pack 6, the recharge battery pack 7, and the overcharge battery pack 8 can also complete the charge / discharge procedure during the battery manufacturing process. In the present embodiment, each of the discharge battery pack 6 and the recharge battery pack 7 includes 24 batteries connected in series. The overcharge battery pack 8 is composed of 24 batteries connected to two parallel groups. The first charger 1 has a DC voltage of 300V and a current of + 1.5A, each battery has a voltage of 12V and a current of 7Ah. These standards are the same as those of conventional devices, the only difference being that this embodiment requires only one charger. The charging / discharging procedure of the charger 1 of this embodiment can be shown as follows.

Table 3. Charge / Discharge Procedure of the Present Invention As shown in Table 3, the total time required for the above charge / discharge procedure is 5 hours, which is shorter than the total time required for conventional equipment. After discharging the discharge battery pack 6, the discharged charge is used to charge the recharge battery pack 7. After charging the rechargeable battery pack 7, the charged charge is used for charging the overcharged battery pack 8. After charging the overcharged battery pack 8, a new battery can be placed and connected to the discharge battery pack 6 for another cycle. The complete charge / discharge procedure is the same as that of the conventional equipment, and can be shown as follows.

Table 4. Series charge / discharge procedure of the present invention

Table 5. Relationship between time and voltage of different processes according to the present invention As shown in Tables 4 and 5, the total time required for the charge / discharge procedure is 15 hours, and the total ampere hours is 3.24 Ah, which is the same as the conventional equipment. is there. However, the number of batteries used in this embodiment is 72, which is 4.5 times the amount of battery used in conventional devices. Furthermore, only one charger is required in this embodiment. The voltage of the first charger is equal to the voltage of the recharge battery pack + the voltage of the overcharge battery pack−the voltage of the discharge battery pack. The total electrical energy required during this procedure is 1387.3 Wh, and the electrical energy required for a single battery is 1387.3 Wh / 24 = 57.8 Wh / piece. Compared to the conventional device, the electric energy required for a single battery in the battery charge / discharge device 100 of the present invention is only 48%: (57.8 Wh / piece) / (120 Wh / piece) × 100% = 48 %. The battery charge / discharge device 100 of the present invention requires only one charger to complete the procedure of this embodiment, and requires less energy than conventional devices. Thus, the present invention is advantageous in reducing equipment cost and total energy and time required, while at the same time the present invention improves the reuse rate during the discharge process.

  FIG. 4 shows a block diagram according to a fourth embodiment of the present invention. The fourth embodiment is different from the first embodiment in that an initial charging battery 9 is further included. The positive terminal of the initial charging battery 9 is connected to the positive terminal of the first charger 1, and the negative terminal of the initial charging battery 9 is connected to the negative terminal of the discharge battery 2. Other elements and connections are the same as those of the first embodiment, and thus further description is omitted. In this embodiment, by adding the initial charging battery 9, the discharging, charging, and overcharging steps can be completed at once, but the voltage of the first charger 1 needs to be adjusted accordingly.

  Furthermore, a 2nd charger can also be included in this embodiment. The positive terminal of the second charger is connected to both the negative terminal of the recharge battery and the positive terminal of the overcharge battery, and the negative terminal of the second charger is the negative terminal of the first charger and the negative terminal of the overcharge battery. And connected to both. With this connection method, the second charger can be connected in parallel to the first charger and the overcharge battery, and the amount of electricity can be adjusted if necessary. Since those skilled in the art can easily realize such variations, further description and accompanying drawings are omitted.

  In the present embodiment, each of the initial charge battery, the discharge battery, the recharge battery, and the overcharge battery is a single battery or includes a plurality of batteries as described in the third embodiment. A battery pack may be used. Similarly, those skilled in the art can easily realize such variations, so that further description and accompanying drawings are omitted here.

  While the invention has been described by way of example and in terms of preferred embodiments, it is to be understood that the invention is not limited thereto and various modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. And corrections can be made. For example, when the discharge battery pack has the same voltage as the recharge battery pack, each of the discharge battery pack, the recharge battery pack, and the overcharge battery pack can be composed of a plurality of batteries connected in series and in parallel.

1 is a block diagram according to a first embodiment of the present invention. FIG. It is a block diagram by a 2nd embodiment of the present invention. It is a circuit diagram by a 3rd embodiment of the present invention. It is a block diagram by a 4th embodiment of the present invention. It is a circuit diagram of the conventional battery charging / discharging apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... 1st charger, 2 ... Discharge battery, 3 ... Recharge battery, 4 ... Overcharge battery, 5 ... 2nd charger, 6 ... Discharge battery pack, 7 ... Recharge battery pack, 8 ... Overcharge battery pack , 9: Initial charging battery.

Claims (18)

  A battery charge / discharge device comprising at least one first charger, at least one discharge battery, at least one recharge battery, and at least one overcharge battery, wherein the discharge battery is the first charger. The rechargeable battery and the overcharge battery are forwardly connected to the first charger, the at least one first charger, the at least one discharge battery, the at least one A battery charging / discharging device, wherein one rechargeable battery and the at least one overcharged battery are connected in series to form a closed loop.   A negative terminal of the discharge battery is connected to a positive terminal of the first charger, a positive terminal of the discharge battery is connected to a positive terminal of the recharge battery, and a negative terminal of the recharge battery is connected to the overcharge battery. The battery charging / discharging device according to claim 1, wherein the battery charging / discharging device is connected to a positive terminal, and a negative terminal of the overcharged battery is connected to a negative terminal of the first charger.   The battery charger further includes a second charger, the positive terminal of the second charger is connected to the negative terminal of the recharge battery and the positive terminal of the overcharge battery, and the negative terminal of the second charger is the first terminal. The first charger is connected to a negative terminal and the negative terminal of the overcharge battery, and the second charger is connected in parallel to the first charger and the overcharge battery. Battery charge / discharge equipment.   A battery charge / discharge device comprising at least one first charger, at least one discharge battery pack, at least one recharge battery pack, and at least one overcharge battery pack, wherein the discharge battery pack is The rechargeable battery pack and the overcharged battery pack are connected in the forward direction to the first charger, and the at least one first charger and the at least one discharge battery are connected in the forward direction to the first charger. A battery charge / discharge device, wherein the pack, the at least one rechargeable battery pack, and the at least one overcharged battery pack are connected in series to form a closed loop.   The negative terminal of the discharge battery pack is connected to the positive terminal of the first charger, the positive terminal of the discharge battery pack is connected to the positive terminal of the recharge battery pack, and the negative terminal of the recharge battery pack is the The battery charge / discharge device according to claim 4, wherein the battery charge / discharge device is connected to a positive terminal of an overcharge battery pack, and a negative terminal of the overcharge battery pack is connected to a negative terminal of the first charger.   The battery charger further includes a second charger, the positive terminal of the second charger is connected to the negative terminal of the recharge battery pack and the positive terminal of the overcharge battery pack, and the negative terminal of the second charger is 6. The negative terminal of the first charger and a negative terminal of the overcharge battery pack are connected, and the second charger is connected in parallel to the first charger and the overcharge battery pack. The battery charging / discharging device described in 1.   The battery charge / discharge device according to claim 4, wherein each of the at least one discharge battery pack, the at least one recharge battery pack, and the at least one overcharge battery pack includes a plurality of batteries.   Each of the at least one discharge battery pack and the at least one recharge battery pack includes a plurality of batteries connected in series, and the at least one overcharge battery pack includes a plurality of batteries connected in parallel. The battery charge / discharge device according to claim 7.   Each of the at least one discharge battery pack, the at least one recharge battery pack, and the overcharge battery pack includes a plurality of batteries connected in parallel, and the batteries connected in parallel of the discharge battery packs and The battery charging / discharging device according to claim 7, wherein batteries connected in parallel in the overcharge battery pack have the same voltage.   A battery charge / discharge device comprising at least one first charger, at least one initial charge battery, at least one discharge battery, at least one recharge battery, and at least one overcharge battery, The initial charge battery is connected in the forward direction to the first charger, the discharge battery is connected in the reverse direction to the first charger, and the recharge battery and the overcharge battery are forward connected to the first charger. The at least one first charger, the at least one initial charge battery, the at least one discharge battery, the at least one recharge battery, and the at least one overcharge battery in series. A battery charge / discharge device that is connected to form a closed loop.   The positive terminal of the initial charging battery is connected to the positive terminal of the first charger, the negative terminal of the initial charging battery is connected to the negative terminal of the discharging battery, and the positive terminal of the discharging battery is connected to the recharging battery. The negative terminal of the recharge battery is connected to the positive terminal of the overcharge battery, and the negative terminal of the overcharge battery is connected to the negative terminal of the first charger. The battery charging / discharging device described.   The battery charger further includes a second charger, the positive terminal of the second charger is connected to the negative terminal of the recharge battery and the positive terminal of the overcharge battery, and the negative terminal of the second charger is the first terminal. The battery according to claim 11, wherein the battery is connected to a negative terminal of one charger and a negative terminal of the overcharge battery, and the second charger is connected in parallel to the first charger and the overcharge battery. Charge / discharge equipment.   A battery charge / discharge device comprising at least one first charger, at least one initial charge battery pack, at least one discharge battery pack, at least one recharge battery pack, and at least one overcharge battery pack. The initial charge battery pack is connected to the first charger in the forward direction, the discharge battery pack is connected to the first charger in the reverse direction, and the recharge battery pack and the overcharge battery pack are Forwardly connected to the first charger, the at least one first charger, the at least one initial charge battery pack, the at least one discharge battery pack, the at least one recharge battery pack, and The at least one overcharged battery pack is connected in series and closed. Constitute the-loop, battery charging and discharging equipment.   The positive terminal of the initial charge battery pack is connected to the positive terminal of the first charger, the negative terminal of the initial charge battery pack is connected to the negative terminal of the discharge battery pack, and the positive terminal of the discharge battery pack is the Connected to the positive terminal of the recharge battery pack, the negative terminal of the recharge battery pack is connected to the positive terminal of the overcharge battery pack, and the negative terminal of the overcharge battery pack is connected to the negative terminal of the first charger. The battery charge / discharge device according to claim 13, which is connected.   The battery charger further includes a second charger, and a positive terminal of the second charger is connected to a negative terminal of the recharge battery pack and a positive terminal of the overcharge battery pack, and a negative terminal of the second charger. Is connected to the negative terminal of the first charger and the negative terminal of the overcharge battery pack, and the second charger is connected in parallel to the first charger and the overcharge battery pack. The battery charge / discharge device according to claim 14.   16. The at least one initial charge battery pack, the at least one discharge battery pack, the at least one recharge battery pack, and the at least one overcharge battery pack each comprise a plurality of batteries. Battery charging and discharging equipment.   Each of the at least one initial charge battery pack, the at least one discharge battery pack, and the at least one recharge battery pack includes a plurality of batteries connected in series, and the at least one overcharge battery pack includes: The battery charge / discharge device according to claim 16, comprising a plurality of batteries connected in parallel.   Each of the at least one initial charge battery pack, the at least one discharge battery pack, the at least one recharge battery pack, and the overcharge battery pack includes a plurality of batteries connected in parallel, and the discharge battery The battery charging / discharging device according to claim 16, wherein the battery connected in parallel in the pack and the battery connected in parallel in the overcharged battery pack have the same voltage.