JP7082276B2 - Output device - Google Patents

Description

The present invention relates to an output device that outputs a voltage generated by connecting a plurality of secondary battery cells in series from a battery formed by connecting a plurality of secondary battery cells in series.

Patent Document 1 discloses a configuration in which a plurality of DC / DC converter units connected in parallel are used to convert a voltage and used for driving an electric vehicle.

Japanese Unexamined Patent Publication No. 2008-253011

In Patent Document 1, since the voltage is converted by using the DC / DC converter unit for driving the electric vehicle, it is considered that the loss of the DC / DC converter unit is large even when a large amount of electric power is supplied to the vehicle electrical components.

An object of the present invention is to provide an output device capable of supplying a voltage lower than a battery voltage with a low loss.

The output device according to the present invention outputs a voltage generated by connecting a plurality of secondary battery cells in series from a battery formed by connecting a plurality of secondary battery cells in series. A series of charge transfer circuits provided in each of the number of switchable secondary battery cells connected in series to transfer charge between the secondary battery cells, and a pair connected in parallel to the secondary battery cells. From the switching element, and the capacitor connected between the pair of switching elements and between the pair of switching elements connected in parallel to the switchable secondary battery cell adjacent to the secondary battery cell. It is a parallel charge transfer circuit that is provided in a series charge transfer circuit and a secondary battery cell group consisting of two or more secondary battery cells divided into the plurality of cells, and transfers charge between the secondary battery cell groups. Between a pair of switching elements connected in parallel to one secondary battery cell group, the pair of switching elements, and a pair of switching elements connected in parallel to the other secondary battery cell group. The parallel charge transfer circuit is provided in multiple stages, and is provided in a secondary battery cell having the same potential as one of the secondary battery cell groups. The series charge transfer circuit is characterized in that it is connected between the parallel charge transfer circuit of the one secondary battery cell group and the parallel charge transfer circuit of the other secondary battery cell group.

Since the output device of the present invention outputs the voltage generated in the secondary battery cell of a part of the secondary battery cell of the battery, there is no loss due to the step-down in the DC / DC converter unit. Here, in order to output only a part of the secondary battery cells, a series charge transfer circuit for transferring charges between the secondary battery cells for maintaining the capacity balance between the secondary battery cells is provided, but the series charge transfer is provided. Resistance loss occurs in the switching elements that make up the circuit. Therefore, a small number of parallel charge transfer circuits provided in the secondary battery cell group are connected to a large number of series charge transfer circuits provided in each secondary battery cell. By connecting a small number of switching elements of the parallel charge transfer circuit, the equivalent resistance value of the switching element from the battery to the secondary battery cell outputting the output voltage is lowered, and the resistance loss is reduced. This makes it possible to supply a voltage lower than the battery voltage with low loss.

Explanatory drawing which shows the operation principle of the output device of embodiment Explanatory diagram showing loss in the output device of the reference example Circuit diagram of the charge transfer circuit of the output device according to the first embodiment Circuit diagram of the voltage adjustment circuit of the output device according to the first embodiment The figure which shows the battery voltage and the output voltage of the output device which concerns on 1st Embodiment. Perspective view of the battery module according to the first embodiment Circuit diagram of the voltage adjustment circuit of the output device according to the modified example of the first embodiment Circuit diagram of the charge transfer circuit of the output device according to the second embodiment Circuit diagram of the charge transfer circuit of the output device according to the third embodiment Circuit diagram of the charge transfer circuit of the output device according to the fourth embodiment

The operating principle of the output device of the embodiment will be described with reference to FIG.
Here, a battery B5 composed of four Li-ion cells CellA, CellB, CellC, and CellD is shown. The battery B5 is equipped with a capacitor switching type charge transfer circuit E5 for making the voltage of the Li-ion cell, which causes ignition due to overcharging, uniform. The charge transfer circuit E5 is connected between a pair of switching elements connected in parallel to each cell, between a pair of switching elements, and between a pair of switching elements connected in parallel to a cell adjacent to the cell. It consists of a capacitor and a capacitor. That is, a pair of switching elements (MSOFETs) MOS1 and MOS2 are connected in parallel with the cell CellA, a pair of MOS3 and MOS4 are connected in parallel with the cell CellB, and a pair of MOS5 and MOS6 are connected in parallel with the cell CellC. , A pair of MOS7 and MOS8 are connected in parallel with the cell CellD. A capacitor Crα is connected between MOS1 and MOS2 parallel to cell CellA and between MOS1 and MOS2 parallel to cell CellB. A capacitor Crβ is connected between MOS3 and MOS4 parallel to cell CellB and between MOS5 and MOS6 parallel to cell CellC. A capacitor Crγ is connected between MOS5 and MOS6 parallel to cell CellC and between MOS7 and MOS8 parallel to cell CellD.

The capacitors Crα are alternately connected between the cell Cell A and the cell Cell B by switching (ON / OFF) of MOS1, MOS2, MOS3, and MOS4 driven by a predetermined duty (for example, 30% -50%). At this time, if there is a potential difference between the cell Cell A and the cell Cell B, the electric charge moves from the cell having a high potential to the capacitor and from the capacitor to the cell having a low potential, and is made uniform so that there is no potential difference. Here, since the voltage Vca of the cell Cell A and the voltage Vcb of the cell Cell B are almost the same value before and after the capacitor Crα is switched (capacitor Crα voltage Vcr = Vca = Vcb), the MOS1, MOS2, MOS3, and MOS4 have almost no potential difference. It operates and causes almost no switching loss. That is, the charge transfer circuit E5 is highly efficient. Similarly, the cell Cell B and the cell Cell C are adjusted so that there is no potential difference, the cell Cell C and the cell Cell D are adjusted so that there is no potential difference, and the potentials of all the cells Cell A, Cell B, Cell C, and Cell D become uniform. .. Although the MSOFET is used as the switching element here, various switching elements such as FETs, transistors, and thyristors can be used as the switching element in addition to the MSOFET.

[Reference example]
In the reference example shown in FIG. 2, a case where a voltage of 12 V is output from a part of a 48 V battery consisting of 18 cells and the voltage is made uniform between the cells only by the charge transfer circuit E5 described above is used. Shows. Lower (low voltage side) cells C1, C2, C3, C4, C5 and the like (not shown) are connected to the load. In this case, since n MOSs (MOS1 to MOSn) connected in series equivalently (n = twice the number of cells not connected to the load) serve as the current path, they pass through the ON resistance of n MOSs. As a result, the resistance loss increases.
Here, the loss loss is expressed by the following equation, where I is the flowing current and Rmos is the ON resistance of each MOS.
Loss = I ² × (Rmos1 + Rmos2 + ... Rmosn)

[First Embodiment]
FIG. 3 shows the charge transfer circuits E1A and E1B of the output device according to the first embodiment.
In the first embodiment, the battery B1 composed of 18 Li-ion cells C1 to C18 is shown. The battery B1 outputs 48V and is used as a power source for a drive motor of a hybrid car. The output device of the first embodiment takes out 12V from the 48V battery B1 and supplies it to 12V electrical components such as headlights and wipers. Cells C1 to C18 include a first cell group b1 consisting of three cells C1, C2, and C3, and a second cell group b2 consisting of six cells C4, C5, C6, C7, C8, and C9. It is divided into a third cell group b3 consisting of three cells C10, C11 and C12, and a fourth cell group b4 consisting of six cells C13, C14, C15, C16, C17 and C18.

Battery B1 is charged by an alternator (not shown). The alternator is driven by an engine (not shown) to supply the electric power required for the vehicle electrical components, and at the time of vehicle deceleration, it regenerates the kinetic energy at the time of deceleration via the drive system and acts as if the battery B1 is filled. do. Further, the battery B1 acts to assist the drive torque of the engine by supplying electric power to an electric drive control system including an in-vehicle motor, an inverter, etc. (not shown). As a result, when the vehicle is accelerating, the energy regenerated during the deceleration can be reused for traveling, so that the traveling fuel efficiency of the vehicle can be improved.

FIG. 4 shows the voltage adjusting circuit 20 of the output device. The voltage adjustment circuit 20 makes it possible to switch the number of units connected in series in some of the secondary battery cells within a predetermined range. That is, the voltage adjustment circuit 20 includes a switch (switching element such as FET) SW3 (8V) for outputting the voltage of the first cell group b1 composed of three cells C1, C2, and C3, and the cell C4. Switch SW4 (10.6V) for outputting voltage, switch SW5 (13.3V) for outputting voltage of cell C5, switch SW6 (16V) for outputting voltage of cell C6, and cell. A switch SW7 (18.7V) for outputting the voltage of C7, a switch SW8 (21V) for outputting the voltage of the cell C8, and a switch SW9 (24V) for outputting the voltage of the cell C9. Be prepared. Here, the Li-ion battery B1 changes from 36V to 54V depending on the battery capacity. The voltage adjustment circuit 20 switches the switch so as to output a voltage of about 14 V in response to the change in the voltage of the battery B1.

The charge transfer circuits E1A and E1B shown in FIG. 3 include a first cell group b1 of C1, C2 and C3 and a second cell group b2 consisting of six cells C4, C5, C6, C7, C8 and C9. Since power is supplied from the cell, it is provided to make the voltage uniform in all cells and to reduce the power loss in the charge transfer circuits E1A and E1B.

The charge transfer circuit E1A transfers charge between a secondary battery cell group consisting of cells C1-C9 obtained by dividing 18 cells of C1-C18 into two and a secondary battery cell group consisting of cells C10-C18. A two-part parallel charge transfer circuit E1 / 2 is provided. The two-part parallel charge transfer circuit E1 / 2 is a secondary battery composed of a pair of switching elements M / 21, M / 22 and cells C10-C18 connected in parallel to a secondary battery cell group consisting of cells C1-C9. It is provided between a pair of switching elements M / 23, M / 24 connected in parallel to the cell group, between the switching elements M / 21, M / 22, and between the switching elements M / 23, M / 24. It consists of a capacitor C.

The charge transfer circuit E1A includes a secondary battery cell group consisting of cells C1-C6 obtained by dividing 18 cells 3 of C1-C18, a secondary battery cell group consisting of cells C7-C12, and cells C13-C18. It is provided with a 3-split parallel charge transfer circuit E1 / 3 that transfers charges to and from a group of secondary battery cells. The 3-split parallel charge transfer circuit E1 / 3 is a secondary battery composed of a pair of switching elements M / 31, M / 32 and cells C7-C12 connected in parallel to a secondary battery cell group consisting of cells C1-C6. A pair of switching elements M / 33, M / 34 connected in parallel to the cell group, and a pair of switching elements M / 35, M / 36 connected in parallel to the secondary battery cell group consisting of cells C13-C18. , The capacitor C provided between the switching elements M / 31, M / 32 and the switching elements M / 33, M / 34, and between the switching elements M / 33, M / 34 and the switching element M. It is composed of a capacitor C provided between / 35 and M / 36.

The charge transfer circuit E1A includes a secondary battery cell group consisting of cells C1-C3 obtained by dividing nine cells 3 of C1-C9, a secondary battery cell group consisting of cells C4-C6, and cells C7-C9. It is provided with a 6-segment parallel charge transfer circuit E1 / 6 that transfers charges to and from a group of secondary battery cells. The 6-segment parallel charge transfer circuit E1 / 6 is a secondary battery composed of a pair of switching elements M / 61 and M / 62 connected in parallel to a secondary battery cell group consisting of cells C1-C3 and cells C4-C6. A pair of switching elements M / 63, M / 64 connected in parallel to the cell group, and a pair of switching elements M / 65, M / 66 connected in parallel to the secondary battery cell group consisting of cells C7-C9. , The capacitor C provided between the switching elements M / 61 and M / 62 and between the switching elements M / 63 and M / 64, and between the switching elements M / 63 and M / 64 and the switching element M. It is composed of a capacitor C provided between / 65 and M / 66. The 6-division parallel charge transfer circuit E1 / 6 is divided into two in all cells C1-C18, and a charge transfer circuit composed of a switching element and a capacitor is provided in each of the cells C1-C9 for outputting voltage.

A series charge transfer circuit E-4 to E-9 for transferring charges between cells is attached to each of the number of switchable cells C4-C9 connected in series. That is, the series charge transfer circuit E-4 provided in the cell C4 is a capacitor provided between the switching elements M1 and M2 connected in parallel to the cell C4, between the switching elements M1 and M2, and between the switching elements M3 and M4. It consists of C. The series charge transfer circuit E-5 provided in the cell C5 includes switching elements M3 and M4 connected in parallel to the cell C5, and capacitors C provided between the switching elements M1 and M2 and between the switching elements M3 and M4. It is composed of a capacitor C provided between the switching elements M3 and M4 and between the switching elements M5 and M6. The series charge transfer circuit E-6 provided in the cell C6 includes switching elements M5 and M6 connected in parallel to the cell C6, and capacitors C provided between the switching elements M3 and M4 and between the switching elements M5 and M6. It is composed of a capacitor C provided between the switching elements M5 and M6 and between the switching elements M7 and M8. The series charge transfer circuit E-7 provided in the cell C7 includes switching elements M7 and M8 connected in parallel to the cell C7, and capacitors C provided between the switching elements M5 and M6 and between the switching elements M7 and M8. It is composed of a capacitor C provided between the switching elements M7 and M8 and between the switching elements M9 and M10. The series charge transfer circuit E-8 provided in the cell C8 includes switching elements M9 and M10 connected in parallel to the cell C8, and capacitors C provided between the switching elements M7 and M8 and between the switching elements M9 and M10. It is composed of a capacitor C provided between the switching elements M9 and M10 and between the switching elements M11 and M12. The series charge transfer circuit E-9 provided in the cell C9 includes switching elements M11 and M12 connected in parallel to the cell C9, and capacitors C provided between the switching elements M9 and M10 and between the switching elements M11 and M12. Consists of. The midpoint MD of the two-divided parallel charge transfer circuit E1 / 2 is connected to a cell C9 that outputs a voltage obtained by dividing 48V into two, 24V, and has the same potential as the midpoint MD, and is provided with a series charge in the cell C9. It is connected to the transfer circuit E-9.

The circuit configuration of the charge transfer circuit E1B is the same as that of the charge transfer circuit E1A shown in FIG. 3, and is arranged symmetrically with respect to the battery and is inverted.

As shown in FIG. 3, when the voltage from the cell C4 is output, there are three types of current paths in the charge transfer circuit E1A.
Path I1: Cell C18 terminal → Switching elements M / 24, M / 23 in the 2-split parallel charge transfer circuit E1 / 2 → Series charge transfer circuit E-9 (switching elements M12, M11) in cell C9 → Series of cell C8 Charge transfer circuit E-8 (switching elements M10, M9) → Series charge transfer circuit E-7 (switching elements M8, M7) in cell C7 → Series charge transfer circuit E-6 (switching elements M6, M5) in cell C6 → Series charge transfer circuit E-5 in cell C5 (switching elements M4, M3) → Cell C4 terminal

Path I2: Cell C18 terminal → Switching element M / 24, M / 23 in 2-split parallel charge transfer circuit E1 / 2 → Switching element M / 66, M / 65 in 6-split parallel charge transfer circuit E1 / 6 → Cell Series charge transfer circuit E-6 of C6 (switching elements M6, M5) → Series charge transfer circuit E-5 of cell C5 (switching elements M4, M3) → Cell C4 terminal

Path I3: Cell C18 terminal → Switching element M / 36, M / 35, M / 34 in 3 division parallel charge transfer circuit E1 / 3, M33 → Series charge transfer circuit E-6 (switching element M6, M5) in cell C6 ) → Series charge transfer circuit E-5 (switching elements M4, M3) of cell C5 → Cell C4 terminal

Further, the above-mentioned paths I1, I2, and I3 are formed in the charge transfer circuit E1B.
In the first embodiment, a parallel charge transfer circuit (2-division parallel charge transfer circuit E1 / 2, 3-division parallel charge transfer circuit E1 / 3, 6-division parallel charge transfer circuit E1 / 6) is formed in multiple stages. The switching elements are parallelized. As a result, the equivalent resistance value due to the switching element decreases, low switching resistance loss occurs, and high efficiency can be realized.

That is, as described above with reference to FIG. 2, when the voltage is output from the cell C4 in the 18 cells as in the first embodiment, the equivalent resistance values are the MOS1 and MOS2 parallel to the cell C18. MOS3, MOS4 that are not parallel to cell C17 ... The MOSn that is parallel to cell C5 is connected in series. On the other hand, in the first embodiment, the equivalent resistance value is reduced by connecting the MOSs in multiple stages in series and parallel.

As a result of the simulation, the efficiency of the output device of the first embodiment changed depending on the number of cells used and the like, and was 97.19% to 98.38%, but the average was 97.5%. That is, the loss was 2.5%, and it was possible to halve the loss of 48V as compared with 5% when the voltage was stepped down by the DC-CD converter.

FIG. 5 is a diagram showing a battery voltage V (in) and an output voltage V (out) of the output device according to the first embodiment.
Here, the battery voltage V (in) of the Li-ion battery B1 changes in the range of 36V-54V depending on the battery capacity. With respect to the change in the voltage of the battery B1, the voltage adjusting circuit 20 described above with reference to FIG. 4 switches the switches SW3 to SW9 so as to maintain the output voltage in the vicinity of 14V. The voltage change width at the time of switching is the largest when the voltage of the battery B1 is 54V, which is the highest, and becomes about 3V.

FIG. 6 is a perspective view of the battery module according to the first embodiment.
The battery module 30 mounted on the hybrid vehicle includes a 48 volt Li-ion battery B1, charge transfer circuits E1A and E1B shown in FIG. 3, and a voltage regulating circuit 20 shown in FIG. It is composed of a casing 36 that houses the output device 40 and an aluminum die-cast case 32 that covers the casing 36. Since the output device 40 has low loss and a small amount of heat generation, it can be accommodated in the same battery module 30 as the battery B1. Further, by arranging the output device 40 close to the battery B1, the cable loss to the battery can be reduced. Here, it is desirable that the aluminum die-cast case is provided with fins for heat dissipation.

Here, each cell of the battery may be provided with a series charge transfer circuit in each cell in order to balance the cells. Further, it is also possible to connect a cell to which a series charge transfer circuit is not provided to a voltage homogenizing device shown in Japanese Patent Application Laid-Open No. 2016-12510 and discharge the cells to a resistor in each cell to balance the cells.

FIG. 7 is a circuit diagram of the voltage adjusting circuit 120 of the output device according to the modified example of the first embodiment.
The voltage adjustment circuit of the modified example of the first embodiment has high voltage accuracy.
The voltage adjustment circuit 120 includes a switch SW3 (8V) for outputting the voltage of the cell C3, a switch SW4 (10.6V) for outputting the voltage of the cell C4, and a switch for outputting the voltage of the cell C5. SW5 (13.3V), switch SW6 (16V) for outputting the voltage of cell C6, switch SW7 (18.7V) for outputting the voltage of cell C7, and switch for outputting the voltage of cell C8. The switch SW8 (21V) and the switch SW9 (24V) for outputting the voltage of the cell C9 are provided with a duty control 122 for duty driving the switch. Further, an inductance L and a capacitor C constituting a smoothing circuit for smoothing the duty-driven voltage are provided.

For example, the voltage of 10.6V in the cell C4 and the voltage of 13.3V in the cell 5 are duty-driven by the switch SW4 and the switch SW5, a voltage of 12V is generated, and the voltage is smoothed by the LC smoothing circuit. Is output. In this case, the voltage applied to the switch SW5 is one cell (2.7V) of the cell C5. Therefore, when compared with the switching loss of the DC-DC converter that switches and steps down the total voltage of 48 V of all cells, 1 / number of cells = 1/18, which is a low loss.

[Second Embodiment]
FIG. 8 shows the charge transfer circuits E2A and E2B of the output device according to the second embodiment.
In the second embodiment, the battery B2 composed of 100 Li-ion cells composed of cells C1-C100 is used. Battery B2 includes a number of switchable cells C4-C9 connected in series. The battery B2 outputs 260 V and is used as a power source for a drive motor of a hybrid car.

The charge transfer circuit E2A consists of a secondary battery cell group (the side including the switchable cells C4-C9) consisting of one of the 50 cells obtained by dividing 100 cells into two, and a second consisting of the other 50 cells. It is provided with a two-part parallel charge transfer circuit E1 / 2 that transfers charges to and from the next battery cell group. Further, in the charge transfer circuit E2A, the secondary battery cell group consisting of one 50 cell (the side including the switchable cells C4-C9) is composed of 25 cells obtained by dividing 50 cells into two. A second two-part parallel charge transfer circuit that transfers charge between the secondary battery cell group (the side containing the switchable cells C4-C9) and the secondary battery cell group consisting of the other 25 cells. Equipped with E2.1 / 2. Further, in the charge transfer circuit E2A, the secondary battery cell group consisting of one of the 25 cells transfers charge between the secondary battery cell groups consisting of 5 divided cells, respectively. A transfer circuit E1 / 5 is provided.

Series charge transfer circuits E-1 to transfer charge between cells to cells C1-C10 consisting of each of the five divided cells, including the number of switchable cells C4-C9 connected in series. E-10 is attached. The circuit configuration of the charge transfer circuit E2B is the same as that of the charge transfer circuit E2A shown in the figure, and the charge transfer circuit E2B is arranged symmetrically with respect to the battery B2 and is inverted.

In the output device of the second embodiment, the charge transfer circuits E2A and E2B have a two-part parallel charge transfer circuit E1 / 2, a second two-part parallel charge transfer circuit E2.1 / 2, and a five-part parallel charge transfer circuit E1 /. 5. The equivalent resistance value is reduced by connecting the MOSs constituting the series charge transfer circuits E-1 to E-10 in multiple stages in series and parallel.

[Third Embodiment]
FIG. 9 shows the charge transfer circuits E3A and E3B of the output device according to the third embodiment.
In the third embodiment, the battery B3 composed of four cells C1-C4 is used. The charge transfer circuit E3A transfers charge between a secondary battery cell group consisting of two cells obtained by dividing four cells into two and a secondary battery cell group consisting of the other two cells. A two-part parallel charge transfer circuit E1 / 2 is provided. Further, series charge transfer circuits E-1 to E-4 for transferring charges between the cells are attached to each of the cells C1-C4 of the cells C1-C4 in which the number of cells connected in series can be switched. The circuit configuration of the charge transfer circuit E3B is the same as that of the charge transfer circuit E3A shown in the figure, and the charge transfer circuit E3B is arranged symmetrically with respect to the battery B3 and is inverted.

[Fourth Embodiment]
FIG. 10 shows the charge transfer circuits E4A and E4B of the output device according to the fourth embodiment. In the fourth embodiment, the battery B4 composed of nine cells C1-C9 is used. The charge transfer circuit E4A includes a three-division parallel charge transfer circuit E1 / 3 that transfers charges between each secondary battery cell group consisting of three cells obtained by dividing nine cells into three. Further, a series charge transfer circuit E-4 to E-9 for transferring charges between cells is attached to each of the switchable cells C4-C9 in which the number of cells connected in series is switchable. The circuit configuration of the charge transfer circuit E4B is the same as that of the charge transfer circuit E4A shown in the figure, and is arranged symmetrically with respect to the battery B4 and is inverted.

If the target output voltage is determined by the configuration of the above-described embodiment, the efficiency can be further improved by increasing the number of parallel MOSs by limiting to the corresponding output stages and reducing the MOSs of unnecessary parts. Here, an example in which the output device is applied to a vehicle has been given, but the output device of the present invention can be applied to various devices such as ships, aircrafts, electric civil engineering machines, electric tools, electronic devices, etc., which are powered by a battery. Is.

E1A, E1B Charge transfer circuit 20 Voltage adjustment circuit B1 Battery C Condenser C1, C2, C3 Cell E1 / 2 2-split parallel charge transfer circuit E1 / 3 3-split parallel charge transfer circuit E1 / 6 6-split parallel charge transfer circuit E-4 Series charge transfer circuit M / 21 switching element SW3 switch

Claims (10)

An output device that outputs a voltage generated by connecting a plurality of secondary battery cells in series from a battery formed by connecting a plurality of secondary battery cells in series.
A series charge transfer circuit provided in each of the number of switchable secondary battery cells connected in series to transfer charge between the secondary battery cells, and a pair of switching connected in parallel to the secondary battery cells. A series consisting of an element and a capacitor connected between the pair of switching elements and between a pair of switching elements connected in parallel to a switchable secondary battery cell adjacent to the secondary battery cell. Charge transfer circuit and
It is a parallel charge transfer circuit that is provided in each of the secondary battery cell groups composed of two or more secondary battery cells divided into the plurality of parts and transfers charge between the secondary battery cell groups, and is one of the secondary batteries. A pair of switching elements connected in parallel to the cell group, a capacitor connected between the pair of switching elements, and a pair of switching elements connected in parallel to the other secondary battery cell group. Equipped with a parallel charge transfer circuit consisting of
The parallel charge transfer circuit is provided in multiple stages.
The series charge transfer circuit provided in the secondary battery cell having the same potential as the one secondary battery cell group is the parallel charge transfer circuit of the one secondary battery cell group and the other secondary battery cell group. An output device characterized by being connected to and from a parallel charge transfer circuit. An output device that outputs a voltage generated by connecting a plurality of secondary battery cells in series from a battery formed by connecting a plurality of secondary battery cells in series.
A series charge transfer circuit provided in each of the number of switchable secondary battery cells connected in series to transfer charge between the secondary battery cells, and a pair of switching connected in parallel to the secondary battery cells. A series consisting of an element and a capacitor connected between the pair of switching elements and between a pair of switching elements connected in parallel to a switchable secondary battery cell adjacent to the secondary battery cell. Charge transfer circuit and
It is a parallel charge transfer circuit that is provided in each of the secondary battery cell groups composed of two or more secondary battery cells divided into the plurality of parts and transfers charge between the secondary battery cell groups, and is one of the secondary batteries. A pair of switching elements connected in parallel to the cell group, a capacitor connected between the pair of switching elements, and a pair of switching elements connected in parallel to the other secondary battery cell group. Equipped with a parallel charge transfer circuit consisting of
The series charge transfer circuit provided in the secondary battery cell having the same potential as the one secondary battery cell group is the parallel charge transfer circuit of the one secondary battery cell group and the other secondary battery cell group. It is an output device connected to the parallel charge transfer circuit of
The plurality are divisible by 2,
The parallel charge transfer circuit is provided in each of the secondary battery cell groups obtained by dividing the plurality of cells into two .
An output device characterized in that the series charge transfer circuit is provided on one side of the secondary battery cell group obtained by dividing the plurality of cells into two, and the series charge transfer circuit is not provided on the other side . An output device that outputs a voltage generated by connecting a plurality of secondary battery cells in series from a battery formed by connecting a plurality of secondary battery cells in series.
A series charge transfer circuit provided in each of the number of switchable secondary battery cells connected in series to transfer charge between the secondary battery cells, and a pair of switching connected in parallel to the secondary battery cells. A series consisting of an element and a capacitor connected between the pair of switching elements and between a pair of switching elements connected in parallel to a switchable secondary battery cell adjacent to the secondary battery cell. Charge transfer circuit and
It is a parallel charge transfer circuit that is provided in each of the secondary battery cell groups composed of two or more secondary battery cells divided into the plurality of parts and transfers charge between the secondary battery cell groups, and is one of the secondary batteries. A pair of switching elements connected in parallel to the cell group, a capacitor connected between the pair of switching elements, and a pair of switching elements connected in parallel to the other secondary battery cell group. Equipped with a parallel charge transfer circuit consisting of
The series charge transfer circuit provided in the secondary battery cell having the same potential as the one secondary battery cell group is the parallel charge transfer circuit of the one secondary battery cell group and the other secondary battery cell group. It is an output device connected to the parallel charge transfer circuit of
The plurality are divisible by 3,
The parallel charge transfer circuit is provided in each of the secondary battery cell groups obtained by dividing the plurality of cells into three parts .
An output device characterized in that the series charge transfer circuit is provided in any one of the secondary battery cell groups obtained by dividing the plurality of cells into three, and the series charge transfer circuit is not provided in the other . The output device according to claim 1.
The plurality are divisible by 6,
The parallel charge transfer circuit is provided in each of the secondary battery cell groups obtained by dividing the plurality of cells into two.
The parallel charge transfer circuit is provided in each of the secondary battery cell groups obtained by dividing the plurality of cells into three parts.
An output device characterized in that the parallel charge transfer circuit is provided in each of the two divided secondary battery cell groups on the side including the plurality of partial secondary battery cells divided into three. The output device according to claim 1.
The plurality are divisible by 50,
The parallel charge transfer circuit is provided in each of the secondary battery cell groups obtained by dividing the plurality of cells into two.
The parallel charge transfer circuit is provided in each of the secondary battery cell groups in which the two-divided secondary battery cell group on the side including the plurality of partial secondary battery cells is divided into five. Output device. The output device according to any one of claims 1 to 5 .
An output device including a voltage adjusting circuit capable of switching the number of serially connected batteries in a part of the secondary battery cells within a predetermined range. The output device according to any one of claims 1 to 6.
A further set of a series charge transfer circuit, a series charge transfer circuit having the same structure as the parallel charge transfer circuit, and a parallel charge transfer circuit are arranged symmetrically with respect to the series charge transfer circuit, the parallel charge transfer circuit, and the battery. An output device characterized by the fact that. The output device according to claim 6 .
The voltage adjustment circuit is
A switching means for duty-driving the output potential of a specific secondary battery cell and the output potential of an adjacent secondary battery cell whose voltage is higher than that of the specific secondary battery cell.
An output device comprising: a smoothing means for smoothing a potential configured by the switching means. The output device according to any one of claims 1 to 8.
The battery is for vehicles and
An output device characterized in that the secondary battery cell is a lithium ion cell. The output device of claim 9.
An output device, characterized in that the output device is housed in the same metal housing as the battery.

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