echnical field [0001] 　The present disclosure, a power storage device and an electronic device using the power from the power storage device, an electric vehicle and a power system. Background technique [0002] 　In recent years, a secondary battery applications solar cells such as a lithium ion battery, power storage for a power storage device in combination with new energy systems such as wind power, is rapidly expanding in the storage battery and the like. Number of the storage element for example a unit cell in order to generate a high output (unit cell, the well. The following description called cells, appropriately referred to as a battery cell.) When using, the configuration of connecting a plurality of storage modules in series It is adopted. Storage module connects a plurality example, four battery cells in parallel and / or in series to form a battery block. Many batteries blocks (also called battery pack.) Storage module is housed in the exterior case is formed. [0003] 　Further, by connecting a plurality of battery modules, battery system providing a common control device is known for a plurality of power storage modules. Each storage module has a module controller, via the communication means between the module controller and the control device is configured to communicate. [0004] 　When using a plurality of battery cells, even reaching the single use lower limit voltage of the plurality of battery cells during discharging due to differences such as the self-discharge of the battery cell, it reaches the other battery cells are still lower limit operating voltage some may not. In such a state, again to charge the battery cells, occur sufficiently can not be charged battery cell, a problem that can not be sufficiently exhibited the ability of battery cells occur. [0005] 　To correct for variations between such a plurality of battery cells, it has been made to control the balance between the battery cells conventionally. Furthermore, Patent Document 1, by dividing the number of battery cells into a plurality of series cell groups, provided with a voltage balance correction circuit between cells in each cell group, it is described that provide a voltage balance correction circuit between groups . Voltage balance correction circuit between the groups is configured to balance corrected by AC coupling the series voltage of each cell group is formed by using a transformer coil and a switching circuit. [0006] 　It can be applied to inter-group voltage balance correction circuit described in Patent Document 1 for correcting the balance of the battery groups of storage modules. However, although the coil is connected to each cell group, the coil has a configuration that is wound on a common magnetic core. Therefore, when connecting to a plurality of power storage modules are housed in separate cases, it is necessary for housing a coil and magnetic core in another case. Becomes possible to perform a star-like wiring for connecting a plurality of storage modules for this alternative transformer device, when the number of storage modules is increased, there is a problem that the connection is complicated. [0007] 　Further, the switching circuit is so uniform, controlled by the voltage to operate on and off in phase is performed independently for each cell group was not capable of controlling the switching operation. Therefore, there is a problem that can not be performed the transfer of power to a particular cell group voltage low from a particular cell group higher voltage. Furthermore, the case of providing a common coil and the switching element on the secondary side of the transformer, the total voltage of the series circuit of a plurality of cell groups with respect to the switching element is applied, it is difficult to secure the withstand voltage of the switching element there was a problem. [0008] 　Applicant has, as described in Patent Document 2, it is not necessary to configure the transformer as the power storage module and another device, ensuring withstand voltage of the switching element is proposed a simple power storage device. Power storage device described in Patent Document 2, for each module is provided with a transformer and a switching element, by controlling the on / off switching element, by moving the charge from the higher voltage module with a low voltage module , so that balance between modules. That is, as easier eliminated by dividing into several times a difference in electric charge amount between the high and low side. CITATION Patent Document [0009] Patent Document 1: Laid-Open Patent Publication No. 2008-035680 Patent Document 2: Laid-Open Patent Publication No. 2013-051856 Summary of the Invention Problems that the Invention is to Solve [0010] 　As the lithium ion secondary batteries, those using an olivine-type positive electrode materials such as olivine-type lithium iron phosphate has been known. Olivine type lithium iron phosphate, a firm or crystal structure, thermal stability has high advantages at high temperatures. If a module using the lithium ion secondary battery using an olivine positive electrode, small slope of the charge-discharge curves, normal voltage difference of the cell or battery pack in a charging and discharging regions hardly appear, the voltage due to variations in the capacitance difference and volume difference are extremely small. In the case of modules using lithium-ion secondary battery using such an olivine-type positive electrode, as described in Patent Document 2, the charge transfer several times with a relatively long period, to perform the equalization is a problem that can not be was observed. [0011] 　Accordingly, the present disclosure is directed to power storage device can be equalized between modules using lithium-ion secondary battery using an olivine positive electrode, an electronic device, to provide an electric vehicle and a power system. Means for Solving the Problems [0012] 　To solve the problems described above, the present disclosure, each a plurality of battery unit comprising a plurality of battery cells or battery blocks of 1, 　the first coil and the first to be connected in parallel with the battery portion a series circuit formed of a switching element of 　the second coil to the first coil and electromagnetically coupled, 　and a second switching element connected to the second coil series, 　the plurality associated with a plurality of battery unit against both ends of the series circuit of the second coil and the second switching elements, for supplying a second voltage that is set to a value that does not exceed the withstand voltage of the switching elements in common, the common power line CL + and common and the power supply line CL- capacitor inserted between, 　in order to equalize the voltages of the battery unit, the control for the first switching element and second switching elements And a control unit for supplying a pulse signal, 　among the plurality of battery unit, the first and second switching elements connected with the highest voltage first battery unit, the power from the first battery portion retrieved, 　among the plurality of battery unit, the first and second switching elements connected most voltage is lower second battery unit, power is supplied to the second battery unit, 　the first battery portion is the power storage device to be transferred by the switching operation of the first and second switching elements the amount of charge is divided into a 1/10 or more mobile charge amount necessary to eliminate a voltage difference between the second battery portion . [0013] 　The present disclosure includes the above-described power storage device, a power storage device for supplying power to an electronic device connected to the power storage device. 　The present disclosure, the above-described power storage device, an electronic device receives power. 　The present disclosure, the above-described power storage device, is an electric vehicle having a converter for converting the driving force of the vehicle, and a control device which on the basis of the information on the power storage device performing information processing related vehicle control supplied with electric power . 　The present disclosure includes a power information receiving unit for transmitting and receiving signals via other devices and networks, 　based on the information transmitting and receiving unit receives a power system that performs charging and discharging control of the above-mentioned power storage device. 　The present disclosure, the above-described power storage device, receives electric power, or a power system for supplying power to the power storage device from a power generator or a power network. Effect of the Invention [0014] 　According to at least one embodiment, the inter-module balancing circuit of the present disclosure, transfers the charge amount obtained by dividing the 1/10 or more mobile charge amount necessary to eliminate a voltage difference between the modules, the voltage difference it can be balanced even if small. Incidentally, but the present disclosure be construed as being limited by the illustrated effects in the following description. BRIEF DESCRIPTION OF THE DRAWINGS [0015] FIG. 1 is a block diagram of an example of the power storage system. [2] is an exploded perspective view of an example of a battery module. 3 is a connection diagram showing a connection structure of an example of a battery module. 4 is a block diagram showing a specific configuration of the power storage system. It is a block diagram of an example of FIG. 5 module controller. 6 is a block diagram showing a configuration of a power storage system connecting a plurality of storage modules. 7 is a schematic diagram showing a mounting state of the component with respect to the multilayer wiring board of each storage module. 8 is a connection diagram showing a circuit configuration of the insulating portion. 9 is a cross-sectional view for explaining a two-layer wiring board and a four-layer wiring board. It is a schematic diagram for explaining a specific example of FIG. 10 PCB antenna. 11 is a schematic diagram for explaining the necessity of the bottom balance. 12 is a schematic diagram for explaining an active bottom cell balance operation. 13 is a schematic diagram for explaining the need for top balance. 14 is a schematic diagram for explaining an active top cell balance operation. 15 is a connection diagram of a conventional active bottom cell balance circuit. 16 is a timing chart for explaining the operation of a conventional active bottom cell balance circuit. 17 is a connection diagram of a conventional active top cell balance circuit. 18 is a timing chart for explaining the operation of a conventional active top cell balance circuit. 19 is a connection diagram of one example of a conventional inter-module balancing circuit. It is a connection diagram of an example of FIG. 20 inter-module balancing circuit. 21 is a connection diagram of a first example of inter-module balancing circuit of the present disclosure. 22 is a connection diagram showing a specific example of the switch. It is a connection diagram for explaining the operation of a first example of the balance circuit between the modules proposed in [23] to. Is a timing chart for explaining the operation of a first example of the balance circuit between the modules proposed in [24] to. Is a timing chart for explaining the operation of a first example of the balance circuit between the modules proposed in FIG. 25 to. FIG. 26 is a connection diagram for explaining the operation of a first example of inter-module balancing circuit of the present disclosure. FIG. 27 is a timing chart for explaining the operation of a first example of inter-module balancing circuit of the present disclosure. [FIG. 28] is a timing chart for explaining the operation of a first example of inter-module balancing circuit of the present disclosure. FIG. 29 is a timing chart for explaining the operation of a first example of inter-module balancing circuit of the present disclosure. Is a graph showing the FIG. 30 of the charge transfer rate of the transfer times of charge relationship. FIG. 31 is a connection diagram showing a configuration for generating the composed voltage of a first example of inter-module balancing circuit of the present disclosure. [FIG. 32] is a connection diagram of a second example of the inter-module balancing circuit of the present disclosure. [FIG 33 is a connection diagram of a third example of inter-module balancing circuit of the present disclosure. FIG. 34 is a block diagram of an example of a power storage system having a balance circuit between the modules of the present disclosure. [FIG. 35] is a connection diagram of a fourth example of inter-module balancing circuit of the present disclosure. [FIG. 36] is a block diagram of a first example of application of the power storage system having a balance circuit between the modules of the present disclosure. [FIG. 37] is a block diagram of a second example of application of the power storage system having a balance circuit between the modules of the present disclosure. DESCRIPTION OF THE INVENTION [0016] 　The embodiments described below are preferred specific examples of the invention, technically preferable various limitations are imposed, the scope of the invention, in the following description, particularly limit the present invention unless stated to the effect, and shall not be limited to these embodiments. [0017] "Energy storage system" 　when using multiple power storage elements e.g. battery cells to generate large output, a plurality of energy storage units (hereinafter, referred to as battery modules) connected to the common of the control system for a plurality of power storage modules the provision of configuration is adopted. Such configuration is referred to as a power storage system. [0018] 　Storage module is a unit which combines a plurality of battery cells and a controller. As shown in FIG. 1, N number of storage modules MOD1 ~ MODN are connected in series. Storage modules MOD1 ~ MODN are connected to the interface bus BS via the insulating unit IS. [0019] 　Further, each module controller overall control unit (hereinafter, control box and occasionally referred to.) Is connected to the ICNT, control box ICNT charge management, discharge management, the management for such deterioration prevention. Control box ICNT is constituted by a microcomputer. [0020] 　The bus BS that connects the bus and the power storage modules MOD1 ~ MODN and control box ICNT in power storage module, a serial interface is used. The serial interface, specifically SM Bus (System Management Bus), CAN (Controller Area Network), SPI (Serial Peripheral Interface) or the like is used. For example it is possible to use the I2C bus. I2C bus is a synchronous serial communication for performing communication with two signal lines of SCL (serial clock) and bidirectional SDA (serial data). [0021] 　A module controller CNT and the control box ICNT of each storage module MOD communicate. That is, the information of the internal state of each battery module, that receives the control box ICNT battery information, charging process and the discharging process of each power storage module are managed. Supplying outputs (N × 51.2V) to the load of the control box ICNT are series connection of the N storage modules. In the example of N = 14, the output becomes (14 × 51.2V = 716.8V). [0022] "An example of a battery module" 　FIG. 2 is a perspective view showing the mechanical structure of the battery module MOD. The outer casing of the power storage modules MOD is made of a sheet metal processed metallic outer lower case 2a and the outer upper case 2b. As the material of the outer lower case 2a and the outer upper case 2b, it is preferable to use a material having a high thermal conductivity and emissivity. It is possible to obtain an excellent housing heat dissipation, it is possible to suppress the temperature rise in the casing. For example, the material of the outer lower case 2a and the outer upper case 2b is aluminum or an aluminum alloy or copper or a copper alloy. The back of the case, the external positive terminal for charging and discharging 3 and the external negative terminal 4 is provided for the power storage module MOD. [0023] 　Further, a current breaker 5 is provided on the back of the storage module MOD. By providing a current breaker 5, it is possible to improve safety. Further, the connector portion 6 for communication between the control circuit is disposed in the case 2 is provided. The control circuit monitors the temperature of the battery unit is provided for controlling charging and discharging or the like. Further, on the front of the case, the display device such as an LED indicating the operating state is provided. [0024] 　Outer lower case 2a of the case has a box-like structure, so as to cover the opening, the outer upper case 2b are provided. The exterior lower case 2a of the storage space, the sub-module AS1 ~ AS4 is housed. The submodules AS1 ~ AS4 to fix by screws or the like, a plurality of bosses are formed on the bottom surface of the outer lower case 2a. Submodules AS1 ~ AS4 is assembled in the outside of the advance cases. [0025] 　Each sub-module is formed by integrating a plurality of battery blocks by an insulating case of a secondary storage case. The case of the sub-module can be used mold parts such as plastics. Submodules AS1 ~ AS4, as positive and negative terminals of the battery block is not exposed, in which housing a plurality of battery blocks in the case. [0026] 　One battery block is to eight cylindrical lithium ion secondary battery of the example are connected in parallel. Submodules AS1 and AS2 are those respectively six battery blocks integrated with the upper case and the lower case. Submodule AS3 and AS4 are those respectively two battery blocks are integrated by the upper case and lower case. Thus, the battery blocks in total (6 + 6 + 2 + 2 = 16) is used. These battery blocks are connected, for example, in series. [0027] 　In each of the sub-modules AS1 ~ AS4, to serially connect the battery blocks, metal plates e.g. busbar for connection is used. Bus bar is an elongated rod-like metal. The bus bar, a plurality of holes for connection with the connecting metal plate or the like which is derived from the battery blocks are formed. [0028] 　As shown in FIG. 3, the battery blocks B1 ~ B16 which eight battery each connected in parallel are connected in series. The parallel connection of eight batteries are referred to 8P. Connecting the sixteen battery blocks in series is referred to as 16S. Therefore, (appropriately referred to as a cell block group) battery section of the module shown in FIG. 3 BB is assumed to have the structure of 8P16S. Battery blocks B1 ~ B16 are respectively connected to the module controller CNT as a control device for the power storage module, charging and discharging are controlled. Charging and discharging is done via an external positive terminal 3 and the external negative terminal 4. For example the battery blocks B1 ~ B6 is included in the sub-module AS1, battery blocks B11 ~ B16 are included in the sub-module AS2. Further, the battery block B7 and B10 are included in the sub-module AS3, battery blocks B8 and B9 are included in the sub-module AS4. [0029] 　Information such as the voltage between the positive and negative electrodes of each battery block is supplied to the module controller CNT through bus 10. Module controller CNT monitors the voltage, current, and temperature of each battery block, and outputs the result of the monitoring as battery information. For example, one storage module MOD outputs (16 × 3.2V = 51.2V). [0030] 　Figure 4 shows a more specific connection configuration of the power storage system. For example, four storage modules MOD1 ~ MOD4 is connected in series. In this case, the total voltage to be taken out to the positive terminal 3 (VB +) and a negative terminal 4 (VB-) is about 200V. Each storage module, and the module controllers CNT1 ~ CNT4 and the battery block groups BB1 ~ BB4 are included respectively. Each battery block group are connected in series, for example, sixteen battery blocks. [0031] 　Module controllers CNT1 ~ CNT4 is connected via a bus, communication terminal module controllers CNT4 is connected to the control box ICNT. To the control box ICNT, information such as the voltage of each module from each module controller are transmitted. Control box ICNT further includes a communication terminal 11 so as to allow communication with the outside. [0032] "One example will of the secondary battery" 　in the embodiment of the present disclosure, an example of a secondary battery to be used, a cathode active material, a lithium ion secondary battery comprising a carbon material such as graphite as the negative electrode active material, it is those containing a cathode active material having an olivine structure as a positive electrode material. [0033] 　More preferably as a cathode active material having an olivine structure, lithium iron phosphate compound (LiFePO 4 ), or lithium iron composite phosphate compound containing a heteroatom (LiFe x M 1-x O 4 : M is one or more the metal, x is 0