Abstract:
A battery charging/discharging system is provided. This system includes a recycling cable and plural charging/discharging controllers. Each of the charging/discharging controllers is corresponding to a battery. When the battery is in a discharging mode, a discharging current outputted from the battery flows to the recycling cable via the charging/discharging controller. When the battery charging/discharging system is operated, the recycling cable has a recycling voltage equal to a DC voltage.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The invention is related to a testing apparatus, and more particularly, to a testing apparatus designed for a battery charge/discharge system. 
         [0003]    2. Description of the Prior Art 
         [0004]    With the rapid development of technologies, many different types of electronic products for commercial use, home use and personal use are getting popular. Besides the ornamental consideration, the safety and the durability of the products are also the main problems we are facing. How to extend the life of the products and to avoid user from harmed by the damage of the products also become the major topic of the designers and the manufacturers of the products. Generally speaking, each of the products has to pass through a quality control process before it is sold. 
         [0005]    For example, during the manufacturing process of a battery comprised in an electronic product, the manufacturers have to apply a charge/discharge test to the battery to ensure the charge/discharge process of the battery is normal, and the capacity of the battery can match the requirement of the specification of the electronic product. 
         [0006]    During the process of the discharging test, if the electricity output by the battery is not be recycled, it will be transformed into large amount of heat which not only wastes a large amount of energy, but also bring a serious problem of heat dissipation to the testing apparatus and the periphery of the testing environment. In view of the problem, the limitation of the testing condition in the safety law is getting restricted, and a standard related to the amount of energy released by discharging the recovered batteries is provided. 
         [0007]    The present batteries charge/discharge system essentially comprising a plurality of battery charge/discharge apparatus. Please refer to  FIG. 1  which illustrates a transitional battery charge/discharge system. As shown in  FIG. 1 , two independent operating battery charge/discharge apparatus  10 A and  10 B run a charge/discharge test for batteries  12 A and  12 B respectively. The electricity dissipated in the charge/discharge test can only be recycled to the corresponding power supply respectively. The disadvantages of this design are that the electricity cannot be utilized effectively by recycling the electricity dissipated thereon. 
         [0008]    Furthermore, most of the present invention is recycled in a form of DC to the electricity system which may decrease the quality of the electricity. 
       SUMMARY OF THE INVENTION 
       [0009]    An object of the present invention is to provide a Battery charge/discharge system. The battery charge/discharge system, comprising a recycling cable and a plurality of charge/discharge controller, wherein each of the charge/discharge controllers corresponds to a battery respectively, while the battery is in a discharging mode, a discharge current, outputted from the battery, flow to the recycling cable via the charging/discharging controller; wherein, while the battery charge/discharge system is operating, the recycling cable has a recycle voltage, and the recycling voltage is a direct voltage. 
         [0010]    To achieve the previous object, the battery charge/discharge system further comprise a power supply connected to charge/discharge controller respectively to charge the battery via the corresponding charge/discharge controller. The battery charge/discharge system also comprise an one way switch, connected between the recycling cable and the power supply, while the one way switch is in a conductive condition, the one way switch allows passage of a current flow from the recycling cable to the power supply, wherein the one way switch is turned on while the battery charge/discharge system is in a stable operation state, the one way switch is turned off while the battery charge/discharge system is in an initial activation state. Furthermore, the one way switch provides a current limit to the current flow to the power supply. 
         [0011]    In actual practice, the one way switch comprises a diode. 
         [0012]    In actual practice, a source voltage is provided to the charge/discharge controller by the power supply, and each of the charge/discharge controllers correspondingly comprise a booster, when the battery corresponding to the charge/discharge controller is in the discharging mode, the booster boost a discharge voltage to get beyond the source voltage, wherein the discharge voltage is supported from the battery to the recycle cable. 
         [0013]    For a better result, the battery charge/discharge system further comprises a central controlling module for controlling the sequence of charging or discharging of the plurality of batteries via the plurality of the charge/discharge controller. 
         [0014]    In actual practice, each of the charge/discharge controllers comprises a power supply respectively, while the battery corresponding to the charge/discharge controller is in a charging mode, the power supply charge the battery. 
         [0015]    For a better result, each of the charge/discharge controllers respectively comprises an one-way switch connected between the recycling cable and the power supply, while the one-way switch is in a on-state, the one-way switch allows passage of a current flow from the recycling cable to the power supply 
         [0016]    The objective of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment, which is illustrated in following figures and drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE APPENDED DRAWINGS 
         [0017]      FIG. 1  illustrates a transitional battery charge/discharge system. 
           [0018]      FIG. 2A  illustrates a function block diagram according to an embodiment of the battery charge/discharge system. 
           [0019]      FIG. 2B  illustrates a charge/discharge module comprise a booster according to an embodiment of the battery charge/discharge system. 
           [0020]      FIG. 2C  illustrates a charge/discharge module comprise two charge/discharge group and a central controlling module according to an embodiment of the battery charge/discharge system. 
           [0021]      FIG. 2D  illustrates a battery charge/discharge system according to another embodiment of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0022]    Please refer to  FIG. 2A ,  FIG. 2A  illustrates a function block diagram according to an embodiment of the battery charge/discharge system. In actual practice, the system  20  can be, but not limited to a battery charge/discharge testing apparatus. In this embodiment, the system comprise a plurality of charge/discharge controller (only two controller  24 A- 4 B are shown for clear expression)—a recycling cable  26 —a power supply  28  and a one way switch  29 . In actual practice, the recycling cable  26  can, but not limited to, be manufactured by copper. 
         [0023]    As shown in  FIG. 2A , each of the charge/discharge controllers of the present embodiment is correspond to a battery respectively ( 12 A- 12 B). During the charging process, the specification and the voltage requirement of the battery  12 A and battery  12 B does not required to be the same. As shown in  FIG. 2A , the batteries are connected to the recycling cable  26  via the corresponding charge/discharge controller. 
         [0024]    More practically, when the battery  12 A is in the discharging mode, the discharge current outputted from the charge/discharge controller  24 A are directed to the recycling cable  26 . 
         [0025]    Similarly, while the battery  12 B is in discharging mode, the discharge current outputted by the battery  12 B is directed to the recycling cable  26 . 
         [0026]    According to present invention, as shown in  FIG. 2A , while the battery charge/discharge system  20  is operating, the recycling voltage on the recycling cable  26  is a DC voltage. 
         [0027]    In this embodiment, the power supply  28  is connected to charge/discharge controller  24 A and  24 B respectively for charging the batteries  12 A and  12 B in charging mode via charge/discharge controller. 
         [0028]    Each of the charge/discharge controllers also having a function of adjusting the voltage for the batteries. For example, if the source voltage outputted by the power supply  28  is fixed to 24 volts, and the charging voltage requirement is 5 volts, then the charge/discharge controller  24 A is capable of decreasing the source voltage received to 5 volts before supplied to the battery  12 A. 
         [0029]    In actual practice, the one way switch  29  can be formed by a diode. As shown in  FIG. 2A , the one way switch  29  is connected between the recycling cable  26  and power supply  28 . While the one way switch  29  is in conductive conduction, the one way switch  29  only allowing the passage of the current flow from the recycling cable  26  to power supply  28 . In another word, the current to flow from the power supply  28  to the recycling cable  26  is not allowed by the one way switch  29 . 
         [0030]    Besides providing the function of limiting the direction of the flow of the current, the one way switch  29  can also be utilized to limit the current flow toward the power supply  28 , so as to avoid the damage of power supply  28  caused by the sudden flow over the afford of the power supply. Furthermore, while the battery charge/discharge system  20  is in the initial activation state, the one way switch  29  can be turned off beforehand, and the one way switch  29  is turned on while the battery charge/discharge system  20  is in a stable operation state. 
         [0031]    In additionally, while the power supply  28  is accepting the recycle electricity supplied by the recycling cable  26  via the one way switch  29 , the amount of electricity consumed by the recharging of the battery can be decreased. 
         [0032]    Furthermore, although the power supply  28  is not charging the battery  12 A- 12 B, the electricity can be transmitted to the charge/discharge controller  24 A- 24 B or any other periphery circuit via the recycling cable  26  for fulfilling the electricity requirement thereof. 
         [0033]    Please refer to  FIG. 2B ,  FIG. 2B  illustrates a charge/discharge module comprise a booster according to an embodiment of the battery charge/discharge system. In this embodiment, the charge/discharge controller  24 A comprise a booster  242 A. The booster  242 A is utilized for boosting the voltage outputted from the battery  12 A to the recycling cable  26 . For example, while the voltage output from the power supply  28  is V 1  and the one way switch  29  is in conduction state, the pressure difference between the both ends of the one way switch  29  is V 2 . While the battery  12 A is in discharging mode, the booster  242 A is capable of boosting the discharging voltage, provided form the battery  12 A to recovery cable  26 , to (V 1 +V 2 ) to compensate the pressure drop cause between the recovery cable  26  and the power supply  28 . 
         [0034]    The other charge/discharge controller of the battery charge/discharge system  20 , such as the charge/discharge controller  24 B, can also comprise the booster  242 A as shown in  FIG. 2B . Since the working principle of the charge/discharge controllers are approximately the same, the discussion of unnecessary details will be hereby omitted. 
         [0035]    According to present invention, if a plurality of the charge/discharge controller is comprised by the battery charge/discharge system  20 , the charge/discharge controllers can be distributed in a plurality of groups. For example, if the battery charge/discharge system  20  comprise two thousand charge/discharge controller such as charge/discharge controller  24 A, every hundred of the charge/discharge controllers can be distributed as a group, and a power supply can be shared by the charge/discharge controller every groups simultaneously. In another word, each of the charge/discharge groups comprises a power supply respectively. Furthermore, the said two charge/discharge controller such as charge/discharge controller  24 A can also share a power supply. 
         [0036]    Please refer to  FIG. 2C ,  FIG. 2C  illustrates a charge/discharge module comprise two charge/discharge group and a central controlling module according to an embodiment of the battery charge/discharge system. The central controlling module  32  is utilized to control the charge/discharge group  30 A- 30 B to enter charging mode sequentially. More practically, the function of the central controlling module  32  is to arrange and adjust the charge/discharge sequence of the batteries in the charge/discharge groups for maximizing the efficiency of the energy. 
         [0037]    For example, while one of the charge/discharge group  30 A is charging the plurality of correspondent batteries, the central controlling module  32  is capable of letting the battery in charge/discharge group  30 B into discharging condition and directing the electricity discharged to the recovery cable. 
         [0038]    comparatively, while one of the charge/discharge group  30 B is charging the plurality of correspondent batteries, the central controlling module  32  is capable of letting the battery in charge/discharge group  30 A into discharging condition and directing the electricity discharged to the recovery cable  26 . So as to save the energy by utilizing the electricity dissipated among the charge/recharge process reciprocally. 
         [0039]    In the system of the present invention, the recycling of the energy no longer limited to a single charge/discharge apparatus to boost the utilization rate of the electricity rapidly. In actual practice, the central controlling module  28  is, but not limited to, a computer system or a single chip microprocessor. 
         [0040]    Please refer to  FIG. 2D ,  FIG. 2D  illustrates a function block diagram according to an embodiment of the battery charge/discharge system. 
         [0041]    In this embodiment, a power supply is comprise in each of the charge/discharge controllers respectively, but not sharing a single power supply with a plurality of charge/discharge controller. 
         [0042]    While the batteries correspond to the charge/discharge controller  24 A is in the charging mode, the power supply  246 A charge the battery  12 A. As shown in  FIG. 2D , and one way switch is comprised in the charge/discharge controller  24 A connected between the recycling cable  26  and the power supply  246 A. 
         [0043]    While the one way switch  248 A is in a conductive conduction, the one way switch  248 A allows a circuit flow from the recycling cable  26  to power supply  246 A. The same with the said embodiments, the power supply  246 A as shown in  FIG. 2D  is capable of receiving the electricity generated by the discharge of the other batteries for decreasing the electricity consumption of the battery  12 A. 
         [0044]    Comparatively, the electricity dissipated during the discharging of the battery  12 A can be utilized to charge other batteries. 
         [0045]    Accordingly, by integrating a plurality of batteries charge/discharge controller, the system and method disclosed by the present invention not only capable of boosting the utilization rate of the energy and also decrease the power consumption of the battery charge/discharge system, but also decreasing the waste heat generated by the energy that is not effectively utilized for solving the heat dissipating problem of the system. Furthermore, In prior art, the quality of electricity is in negatively affected by the recovery electricity, however, in accordance with the system of present invention, the electricity can be recycled in the form of direct current so as to solve the said problem. 
         [0046]    According to the battery charge/discharge system and battery charging/discharge method of the present invention, different sizes or capacities of batteries can be utilized, furthermore, the present invention is not only limited to be utilized on testing apparatus. 
         [0047]    With the example and explanations above, the features and spirits of the invention will be hopefully well described. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teaching of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.