JP5578088B2 - Assembled battery - Google Patents

Description

  The present invention relates to an assembled battery.

  Conventionally, a power line communication system that transmits a signal via a power line is known. In such a power line communication system, in order to stabilize the communication, a technique for increasing a signal pass bandwidth by adding a coupling circuit to the power line communication system and adjusting a coupling coefficient of the coupling circuit is known. (For example, Patent Document 1). Such a power line communication system is applied to an assembled battery by using, for example, an assembled battery as a power source and a power line for supplying power from the assembled battery as a communication line. .

JP-A-3-35623

  However, in the prior art, it is necessary to add a coupling circuit in order to widen the signal pass bandwidth, and there is a problem that the manufacturing cost increases.

  The present invention provides an assembled battery that enables stable power line communication without newly adding a configuration such as a coupling circuit.

The present invention provides an arrangement between individual cells constituting an assembled battery so that the assembled battery forms a coiled current path and an inductance component is generated as a whole assembled battery by an induced magnetic field generated by the coiled current path. The above-mentioned problem is solved by setting the position and the leading position and the leading direction of the positive terminal and the negative terminal of each unit cell.

  According to the present invention, since the assembled battery has a coil-shaped current path, an inductance component can be generated, so that the bandwidth of a signal capable of obtaining a certain gain or more can be widened. Stable communication can be made possible.

It is a block diagram of the power line communication system concerning this embodiment. It is a schematic diagram which shows the cell which comprises the assembled battery which concerns on 1st Embodiment. It is a schematic diagram which shows the assembled battery which concerns on 1st Embodiment. It is a figure for demonstrating the electric current path of the assembled battery which concerns on 1st Embodiment. It is a figure for demonstrating the electric current path of the assembled battery which concerns on 1st Embodiment. It is a figure which shows the other structural example of the assembled battery which concerns on 1st Embodiment. It is a figure which shows the assembled battery which concerns on 2nd Embodiment. It is the top view which looked at the assembled battery which concerns on 2nd Embodiment from the Z-axis positive direction. It is a schematic diagram which shows the cell which comprises the assembled battery which concerns on 3rd Embodiment. It is a schematic diagram which shows the cell which comprises the assembled battery which concerns on 3rd Embodiment. It is a schematic diagram which shows the assembled battery which concerns on 3rd Embodiment. It is the top view which looked at the assembled battery which concerns on 3rd Embodiment from the Z-axis positive direction. It is a schematic diagram which shows the cell which comprises the assembled battery which concerns on 4th Embodiment. It is a schematic diagram which shows the assembled battery which concerns on 4th Embodiment. It is the top view which looked at the assembled battery which concerns on 4th Embodiment from the Z-axis positive direction. It is a figure which shows the assembled battery which concerns on 5th Embodiment. It is the top view which looked at the assembled battery which concerns on 5th Embodiment from the Z-axis positive direction.

<< First Embodiment >>
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a power line communication system according to an embodiment of the present invention. As shown in FIG. 1, the power line communication system according to the present embodiment includes a plurality of assembled batteries 10 as its power source. In the present embodiment, a plurality of assembled batteries 10 are connected in series in order to achieve a large output and a large capacity, and each assembled battery 10 is connected to a plurality of single cells 100 via a power line 11. Are connected in series. As the single battery 100, a secondary battery such as a lithium ion battery or a nickel metal hydride battery is used.

  The direct current supplied from the assembled battery 10 is converted into an alternating current by an inverter (power converter) (not shown), supplied to an alternating current motor, and used for driving the alternating current motor, for example. The configuration of the assembled battery 10 will be described later.

  The battery control unit 6 is provided for each assembled battery 10 and is connected in parallel with the assembled battery 10. The battery control unit 6 is driven by the supply of electric power from the assembled battery 10 to be connected, and performs various controls of the unit cell 100. Examples of the control performed by the battery control unit 6 include control such as capacity adjustment of the battery capacity (SOC (%): State of Chrage).

  A PLC slave unit 7 (PLC: Power Line Communication) is connected to each battery control unit 6 and receives the state of each unit cell 100 from the battery control unit 6. Further, the PLC slave unit 7 is provided with a transmitter / receiver (not shown) that transmits and receives communication signals, and can perform power line communication with the PLC master unit 8 described later via the power lines 11 and 12. For example, the PLC slave unit 7 can transmit data including the battery capacity of the unit cell 100 to the PLC master unit 8. The signal transmitted from the PLC slave unit 7 is an AC communication signal. The PLC slave unit 7 generates a communication signal by superimposing a high-frequency signal indicating transmission data on a predetermined carrier frequency, and the generated communication. The signal is transmitted to the PLC master unit 8.

  The PLC master unit 8 is connected in parallel to the assembled battery 10 via the power lines 11 and 12, and performs power line communication with each PLC slave unit 7 via the power lines 11 and 12. The PLC master unit 8 is provided with a transmitter (not shown) that transmits a communication signal and a transmitter / receiver (not shown) that transmits and receives the communication signal. For example, the PLC master device 8 transmits a communication signal for controlling the battery capacity to the PLC slave device 7 through power line communication using the power lines 11 and 12. Then, the PLC slave unit 7 that has received the communication signal from the PLC master unit 8 transmits a communication signal for controlling the battery capacity to the battery control unit 6 and causes the battery control unit 6 to adjust the capacity of the battery capacity. Further, the PLC master device 8 monitors communication signals by power line communication and manages the communication state with the PLC slave device 7. The PLC master unit 8 may be a part of a control part of a load side circuit such as an inverter or a motor, and is not necessarily an independent control part.

  Next, the configuration of the assembled battery 10 according to the present embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 is a schematic diagram showing a single battery 100 constituting the assembled battery 10. As shown in FIG. 2, the cell 100 has a positive electrode terminal 111 and a negative electrode terminal 112, and the positive electrode terminal 111 and the negative electrode terminal 112 are from one short side of the outer peripheral edge of the cell 100. Derived. The assembled battery 10 according to the present embodiment is configured by stacking a plurality of unit cells 100 shown in FIG.

FIG. 3 is a schematic diagram showing the assembled battery 10 including the single battery 100 shown in FIG. Here, in FIG. 3, among the single cells constituting the assembled battery 10, _four single cells 100 _{1 to} 100 ₄ are shown. The unit cell ₁₀₀ 1 to 100 ₄ have the same structure, the positive electrode terminal ₁₁₁ 1 to 111 ₄ and the negative electrode terminal ₁₁₂ 1 to 112 _4, one of the short sides of the outer peripheral edge of the cell Derived from the same position. Thus, deriving the position of the positive electrode terminal ₁₁₁ 1 to 111 ₄ and the negative electrode terminal ₁₁₂ 1 to 112 ₄ is the same unit cell ₁₀₀ 1 to 100 _4, as shown in FIG. 3, the positive terminal ₁₁₁ 1 to 111 ₄ and the negative electrode terminal (in Figure 3, Y-axis positive direction) 112 ₁ to 112 ₄ in the extending direction is the same direction as well as arranged so that, when viewed in the Z-axis positive direction, the positive electrode terminal ₁₁₁ 1 to 111 ₄ and the negative electrode terminal 112 _{1-112 4} that are stacked so as to overlap each other, the assembled battery 10 according to the first embodiment is constructed. In addition, the number of the single cells 100 constituting the assembled battery 10 is not particularly limited.

Further, as shown in FIG. 3, each cell ₁₀₀ 1 to 100 ₄ are connected by a power line ₁₁ 1 to 11 _5. Specifically, are connected by the negative terminal 112 ₃ and the power line 11 ₃ of the positive terminal 111 ₂ and the single cell 100 ₃ of the cells 100 ₂ located one above the other, the unit cell thereby, located one above the other 100 ₂ and the unit cell 100 ₃ is connected to each other. Similarly, unit cell 100 ₁ and the single cell 100 ₂ located one above the other, and single cells 100 ₃ and unit cells 100 ₄ even through the power line power line ₁₁ 2, 11 ₄ are connected to each other. The negative electrode terminal 112 ₁ of the cells 100 _1, a single cell 100 ₁ of the upper positive terminal of another unit cell located (Z-axis positive direction side) (not shown), are connected by a power line 11 ₁ Similarly, positive terminal 111 ₄ of the cell 100 _4, a single cell 100 ₄ of the lower other negative terminal of the cell located in the (Z-axis negative direction side) (not shown), connected by a power line 11 ₅ doing. Thus, the positive terminals 111 of one unit cell 100 positioned above and below and the negative terminals 112 of the other unit cells 100 are connected by the power line 11 so that the unit cells 100 positioned above and below each other. The assembled battery 10 is configured by being connected.

Next, the current path of the assembled battery 10 will be described with reference to FIGS. 4 and 5. 4 and 5 are diagrams illustrating the current path of the assembled battery 10 during discharging. FIG. 4 shows the assembled battery 10 viewed from the positive direction of the Y axis, and FIG. 5 shows the negative direction of the X axis. The assembled battery 10 seen from FIG. 4 and 5, the direction of the current path of the assembled battery 10 during discharge is indicated by a dashed arrow, and the direction of the induced magnetic field generated by the current path is schematically indicated by a white arrow. In FIG. 4, it shows the direction of the induced magnetic field in each cell 100 ₁ to 100 ₄ in FIG. 5 shows the orientation of the induced magnetic field as a whole assembled battery 10.

For example, if the discharge in the battery pack 10 has been performed, the current due to discharge, a power line ₁₁ 1 to 11 _5, flows from the power line 11 ₁ side to the power line 11 _5. Therefore, as shown by the dashed arrows in FIGS. 4 and 5, in the power line 11 ₁ , a current path is formed on the power line 11 ₁ toward the negative electrode terminal 112 ₁ side of the unit cell 100 ₁ , and the power line 11 in _2, the power line 11 ₂ above, the current path from the positive terminal 111 ₁ side of the single cell 100 ₁ to the negative terminal 112 ₂ side of the single cell 100 ₂ is formed.

Further, in the power line 11 ₁ and the power line 11 _2, when a current path is formed as described above, in the unit cell 100 ₁ connected to the power line 11 ₁ and the power line 11 _2, the broken line in FIG. 4 and FIG. 5 as shown by the arrows, the current path extending from the negative terminal 112 ₁ of the cells 100 ₁ to the positive terminal 111 ₁ of the cells 100 ₁ is formed. As a result, as shown in FIGS. 4 and 5, the current paths of the power line 11 ₁ , the unit cell 100 ₁ , and the power line 11 ₂ are continuous to form a coil-shaped (substantially wound around) current path. Is done. The current path in the single cell 100 ₁ is a diagram showing the path of the current inside the battery that is considered a single cell 100 ₁ internal current density distribution (hereinafter, also in the single cell ₁₀₀ 2 - 100 ₄ same.)

Similarly, in the power lines 11 _{3 to} 11 ₅ and the single cells 100 _{2 to} 100 ₄ , current paths are formed as shown in FIGS. 4 and 5, respectively. As a result, as shown in FIGS. 4 and 5, a coil-shaped current path wound approximately four times is formed. And when an electric current flows into the coil-shaped electric current path of the assembled battery 10, an induced magnetic field will generate | occur | produce as shown with the white arrow in FIG.4 and FIG.5. In the above description, the current path of the assembled battery 10 during discharging has been described. However, when charging is performed in the assembled battery 10, the direction of the current flowing through the current path is the current flowing through the current path during discharging. This causes an induced magnetic field in the opposite direction to that during charging.

As described above, the assembled battery 10 according to this embodiment includes the plurality of single cells 100 _{1 to} 100 ₄ when viewed from the positive direction of the Z axis, and the positive terminals 111 ₁ to 111 ₄ of the single cells 100 _{1 to} 100 _4. 111 with ₄ and the negative terminal ₁₁₂ 1 to 112 ₄ are stacked so as to overlap each other, the power line to the positive terminal ₁₁₁ 1 to 111 ₄ of the cells ₁₀₀ 1 to 100 ₄ which is located vertically and the negative terminal ₁₁₂ 1 to 112 ₄ 11 which are connected respectively by ₁ to 11 _5. By configuring the assembled battery 10 in this way, for example, when the assembled battery 10 is discharged and charged, the assembled battery 10 has a coiled current path, and current flows through the coiled current path. Thus, for example, as shown by a white arrow in FIGS. 4 and 5, an induced magnetic field can be generated. The induction magnetic field generates an inductance component in the battery pack 10. Since this inductance component increases the Q value (quality factor), by generating the inductance component, it is possible to widen the bandwidth of a signal from which a gain above a certain level can be obtained. As a result, by using the assembled battery 10 according to the present embodiment, it is possible to stably perform power line communication in which the PLC master unit 8 and the PLC slave unit 7 communicate.

In addition, the structure of the assembled battery 10 is not specifically limited to the structure mentioned above, For example, it is good also as a structure as shown in FIG. That is, in the unit cells 100 _{1 to} 100 ₄ constituting the assembled battery 10, only the unit cell 100 ₄ is rotated 180 ° along the Y axis with respect to the other unit cells 100 _{1 to} 100 ₃ . It may be arranged to constitute a battery pack. In the assembled battery shown in FIG. 6, when viewed from the positive direction of the Y-axis, the single cells 100 _{1 to} 100 ₃ are derived from the positive terminals 111 _{1 to} 111 ₃ from the right side and the negative terminals 112 _{1 to} 112 ₃ from the left side, respectively. while being arranged to, single cells 100 _4, when viewed from the Y axis positive direction, the positive terminal 111 ₄ on the left and the negative terminal 112 ₄ are arranged to derive from each of the right side. Therefore, when the discharge is performed in the battery pack shown in FIG. 6, as shown in FIG. 6, the direction of flow through the current path in the single cell 100 ₄ current is, the current path in the single cell 100 ₁ to 100 ₃ current It will flow direction in the opposite direction, by which, and direction of the induced magnetic field in the single cell 100 ₄ (Z-axis positive direction), the direction of the induced magnetic field in the single cell ₁₀₀ 1 _{~100 3} (Z-axis negative direction) is the direction opposite . In this case, the induced magnetic field of the Z-axis positive direction in the unit cell 100 _4, which is offset by the induction magnetic field in the Z-axis negative direction in the single cell ₁₀₀ 1 to 100 _3, Z-axis in the single cell ₁₀₀ 1 to 100 ₃ strength of the induced magnetic field in the negative direction is larger than the intensity of the induced magnetic field of the Z-axis positive direction in the unit cell 100 _4, the entire battery pack 10, it is possible to induce the magnetic field of the Z-axis negative direction is generated, thereby, FIG. In the assembled battery shown in FIG. 6, an inductance component can be generated.

<< Second Embodiment >>
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a schematic diagram showing the assembled battery 10 included in the power line communication system according to the second embodiment, and FIG. 8 is a plan view of the assembled battery 10 shown in FIG. 7 viewed from the positive direction of the Z axis. The power line communication system according to the second embodiment has the same configuration and operation as those of the above-described first embodiment except for the following description, and redundant description thereof is omitted. 7 and 8, as in FIGS. 4 to 6, the direction of the current path of the battery pack 10 during discharge is indicated by a dashed arrow, and the direction of the induced magnetic field generated by the current path is outlined. This is indicated by an arrow.

  Similar to the assembled battery 10 according to the first embodiment, the assembled battery 10 according to the second embodiment includes the single battery 100 shown in FIG. In addition, the number of the cell 100 which comprises the assembled battery 10 which concerns on 2nd Embodiment is not specifically limited.

In FIG. 7, six unit cells 100 _{1 to} 100 ₆ among the plurality of unit cells 100 constituting the assembled battery 10 of the second embodiment are illustrated. As shown in FIG. 7, in the assembled battery 10 according to the second embodiment, the single cell 100 ₁ and a single cell 100 ₂ is disposed on the same XY plane, constitute one cell group. The single cell 100 ₁ and a single cell 100 _2, positive terminal ₁₁₁ 1, 111 ₂ and the negative terminal ₁₁₂ 1, 112 ₂ are derived from the same side of the cell, the positive terminal ₁₁₁ 1, 111 ₂ and the negative electrode The terminals 112 ₁ and 112 ₂ are arranged so that the sides derived from each other are adjacent to each other. Furthermore, the unit cells 100 ₁ and a single cell 100 _2, the unit cell 100 ₁ positive terminal 111 ₁ and the negative terminal 112 ₂ of the cell 100 _2, and the negative electrode terminal 112 ₁ of the cells 100 ₁ and the unit cell 100 ₂ the positive terminal 111 ₂ is arranged so that each opposite.

Further, the unit cell 100 ₁ and a single cell 100 ₂ the lower (Z-axis negative direction side), the unit cell 100 ₃ and unit cells 100 ₄ are respectively arranged. Single cell 100 _3, and a single cell 100 _4, like the unit cell 100 ₁ and a single cell 100 ₂ is disposed on the same XY plane, with constitute one cell group, the positive terminal ₁₁₁ 3, 111 ₄ and the negative terminal ₁₁₂ 3, 112 sides _each other ₄ derives are arranged next to each other. Furthermore, the unit cells 100 ₃ and unit cells 100 ₄ of the lower (Z-axis negative direction side), the unit cells 100 _5, and the single cell 100 ₆ is disposed on the same XY plane, one of the cell group In addition, the positive terminals 111 ₅ and 111 ₆ and the negative terminals 112 ₅ and 112 ₆ are arranged so that the sides from which they are derived are adjacent to each other. In this way, by stacking the unit cell group composed of the two unit cells 100 arranged on the same XY plane, the assembled battery 10 according to the second embodiment is configured as shown in FIG. Yes.

These unit cells 100 _{1 to} 100 ₆ are connected by power lines 11 _{1 to} 11 ₁₇ , respectively, as shown in FIG. Specifically, the positive terminal 111 ₁ of the cells 100 ₁ disposed on the same XY plane and the negative terminal 112 ₂ of the unit cells 100 ₂ are connected by power lines 11 _2, thereby, the same disposed on the XY plane single cell 100 ₁ and the unit cell 100 ₂ are connected to each other. Similarly, the same XY disposed on a plane with a single cell 100 ₃ single cell 100 _4, and a single cell 100 ₅ and the single cells 100 ₆ are also connected to each other by a power line ₁₁ 4, 11 _6.

Furthermore, a positive terminal 111 _{and second} unit cells 100 _2, and the negative terminal 112 ₃ of the cells 100 ₃ arranged on the lower side (Z-axis negative direction side) of the single cell 100 ₁ is connected by a power line 11 ₃ cage, thereby, of the two cell group located on top of each other, a unit cell 100 ₃ constituting the unit cell 100 ₂ and another cell group constituting one cell group are connected to one another . Similarly, of the two cell group located one above the other, one of the single cells 100 ₅ constituting the unit cell 100 ₄ and other cell group that constitutes the cell group is connected to each other by a power line 11 ₅ Has been. The negative electrode terminal 112 ₁ of the cells 100 _1, the negative terminal of the cell stacked in a single cell 100 ₂ the upper (Z-axis positive direction side) (not shown) are connected by a power line 11 _1, the positive terminal 111 ₆ single-cell 100 _6, the lower side of the single cell 100 ₅ negative terminal of the cell stacked in (Z-axis negative direction side) (not shown), are connected by a power line 11 _7. As described above, in the second embodiment, the unit cells 100 arranged on the same XY plane are connected to each other through the power line 11 and one unit cell among the unit cell groups positioned above and below each other. The unit cell 100 of the battery group and the unit cell 100 of the other unit cell group are also connected by the power line 11, and the assembled battery 10 which concerns on 2nd Embodiment is comprised.

Next, the current path of the assembled battery 10 according to the second embodiment will be described by exemplifying a scene where the assembled battery 10 is discharged. For example, if the discharge in the battery pack 10 according to the second embodiment is performed, the current due to discharge, a power line ₁₁ 1 to 11 _7, flows from the power line 11 ₁ side to the power line 11 ₇ side. Therefore, as indicated by broken line arrow in FIG. 7, in the power line 11 _1, the power line 11 ₁ above, the current path towards the negative terminal 112 ₁ of the cells 100 ₁ is formed, also in the power line 11 ₂ , a power line 11 ₂ above, the current path from the positive terminal 111 ₁ side of the single cell 100 ₁ to the negative terminal 112 ₂ side of the single cell 100 ₂ is formed, further, in the power line 11 _3, the upper power line 11 ₃ , a current path from the positive terminal 111 ₂ side of the single cell 100 ₂ to the negative electrode terminal 112 ₃ side of the single cell 100 ₃ is formed.

Further, in the electric power line 11 ₁ and the electric power line 11 ₂ , the current path is formed as described above, so that in the unit cell 100 ₁ connected to the electric power line 11 ₁ and the electric power line 11 ₂ , as indicated by a broken line arrow in FIG. In addition, a current path from the negative electrode terminal 112 ₁ to the positive electrode terminal 111 _{1 of the unit} cell 100 ₁ is formed. Similarly, in the unit cell 100 ₂ connected to the power line 11 ₂ and the power line 11 ₃ , a broken line arrow in FIG. as shown, the current path extending from the negative terminal 112 ₂ of the single cell 100 ₂ to the positive terminal 111 ₂ is formed. As a result, the current paths in the unit cells 100 ₁ and 100 ₂ and the power lines 11 _{1 to} 11 ₃ are continuous, and a coil-shaped (substantially wound around) current path is formed as shown in FIG. The Rukoto. The current path in the single cell ₁₀₀ 1, 100 _2, shows the path of each cell ₁₀₀ 1, 100 ₂ internal current of the battery to be considered from the density distribution current (hereinafter, the unit cells ₁₀₀ 3 - the same also in the 100 _6.).

Similarly, in the cells 100 _{3 to} 100 ₆ and the power lines 11 _{3 to} 11 ₁₇ , coil-shaped current paths are formed as shown in FIG. As described above, the unit cells 100 arranged on the same XY plane are connected to each other by the power line 11, and the unit cell 100 and the other unit cell 100 are included in one unit cell group positioned above and below each other. By connecting the power lines 11 to each other, as shown in FIG. 7, a coil-shaped current path is formed in the assembled battery 10 as a whole. And when an electric current flows into the coil-shaped electric current path of the assembled battery 10, as shown by the white arrow in FIG. 7, an induction magnetic field will generate | occur | produce.

As described above, the assembled battery 10 according to the second embodiment is configured. In the second embodiment, as shown in FIG. 8, when the current path of the assembled battery 10 is viewed from the positive Z-axis direction, the current path of the assembled battery 10 according to the second embodiment loops on the same XY plane. The loop of the current path becomes larger than the current path of the assembled battery 10 according to the first embodiment. Therefore, in the second embodiment, in addition to the effect of the first embodiment, the inductance component becomes larger, and thereby it is possible to achieve an effect that more stable power line communication can be performed. . The negative electrode terminal 112 ₁ of the cells 100 represents a _single cell 100 ₂ the upper (Z-axis positive direction side) arranged unit cells of the positive terminal connected to a (not shown), a single cell 100 ₂ the positive terminal 111 _2, since that is connected to the negative terminal 112 ₃ of the lower single cell 100 ₃ disposed (Z-axis negative direction side) of the cells 100 _1, the current path shown in FIG. 8, ring-opened loop It becomes a shape.

<< Third Embodiment >>
Next, a third embodiment of the present invention will be described using FIG. 9A, FIG. 9B, FIG. 10, and FIG. FIG. 9A and FIG. 9B are schematic views showing the unit cells 101 and 102 constituting the assembled battery 10 according to the third embodiment, and FIG. 10 is a schematic view showing the assembled battery 10 according to the third embodiment. FIG. 11 is a plan view of the assembled battery 10 shown in FIG. 10 as viewed from the positive direction of the Z axis. The power line communication system according to the third embodiment has the same configuration and operation as those of the above-described first embodiment except for the following description, and redundant description thereof is omitted. 10 and 11, as in FIGS. 4 to 6, the direction of the current path of the assembled battery 10 during discharge is indicated by a broken-line arrow, and the direction of the induced magnetic field generated by the current path is outlined. This is indicated by an arrow.

  The assembled battery 10 according to the third embodiment includes two types of single cells, a single cell 101 shown in FIG. 9A and a single cell 102 shown in FIG. 9B. As shown in FIG. 9A, in the unit cell 101, the negative electrode terminal 122 is led out from one short side of the outer peripheral edge of the unit cell 101, and the positive electrode terminal 121 is led out from one long side. Thus, the positive electrode terminal 121 and the negative electrode terminal 122 are respectively derived from two adjacent sides of the outer peripheral edge. Further, as shown in FIG. 9B, in the unit cell 102, the positive electrode terminal 131 is derived from one short side of the outer peripheral edge of the unit cell, and the negative electrode terminal 132 is derived from one long side. Thereby, it has the structure where the positive electrode terminal 121 and the negative electrode terminal 122 were each derived | led-out from two adjacent sides of an outer peripheral edge part. In addition, the number of the single cells 101 and 102 constituting the assembled battery 10 according to the third embodiment is not particularly limited.

In Figure 10, among the plurality of cells 101 and 102 constituting the assembled battery 10 according to the third embodiment, showing the respective six cell in the cells ₁₀₁ 1 to 101 _{6, 102} 1 to 102 ₆ Yes. Among the single cells ₁₀₁ 1 to 101 _{6, 102} 1 to 102 ₆ composing the assembled battery 10 according to the third embodiment, the battery 101 _3, the unit cell 102 _3, the unit cell 101 _4, and the unit cell 102 ₄ are the same Are arranged on the XY plane, constituting one unit cell group. Similarly, the battery 101 ₁ , the single battery 102 ₁ , the single battery 101 ₂ , and the single battery 102 ₂ are also arranged on the same XY plane and constitute one single battery group. The battery 101 ₅ , the single battery 102 ₅ , the unit cell 101 ₆ , and the unit cell 102 ₆ are also arranged on the same XY plane and constitute one unit cell group. And the assembled battery 10 which concerns on 3rd Embodiment is comprised as shown in FIG. 10 by laminating | stacking the several cell group comprised in this way.

The unit cell 101 ₃ , unit cell 102 ₃ , unit cell 101 ₄ , and unit cell 102 ₄ arranged on the same XY plane are the positive terminal 121 ₃ , 131 ₃ , 121 ₄ , 131 ₄ and the negative terminal. The sides from which 122 ₃ , 132 ₃ , 122 ₄ , and 132 ₄ are derived are arranged so as to be adjacent to each other. Specifically, the unit cell 101 _3, the unit cell 102 _3, the unit cell 101 _4, and the unit cell 102 _4, as shown in FIG. 10, the unit cells 101 ₃ of the positive terminal 121 ₃ and the negative electrode of the battery cell 102 ₃ terminal 132 _3, the negative electrode terminal 122 ₄ of the positive terminal 131 ₃ of the unit cells 102 ₃ unit cells 101 _4, the unit cell 101 ₄ positive terminal 121 ₄ and the negative terminal 132 ₄ of the cell 102 _4, and the unit cells 102 ₄ as the negative electrode terminal 122 ₃ of the positive terminal 131 ₄ and the unit cell 101 ₃ are opposed to each other, they are disposed respectively. Similarly, the single cells 101 ₁ , 102 ₁ , 101 ₂ , 102 ₂ constituting one single electron group are also connected to the positive terminals 121 ₁ , 131 ₁ , 121 ₂ , 131 ₂ and the negative terminals 122 ₁ , 132 ₁ , 122 _2. , 132 ₂ are arranged such that the sides each other are derived adjacent, also single cell _{101 5,} 102 _5, 101 6, 102 ₆ composing the single electron group one, the positive terminal 121 _{5, 131 5,} 121 6, 131 ₆ and the negative electrode terminal _{122 5,} 132 _5, 122 6, 132 sides _each other ₆ are derived are arranged next to each other.

Further, as shown in FIG. 10, the individual cells 101 _{1 to} 101 ₆ and 102 _{1 to} 102 ₆ are connected by power lines 11 _{1 to} 11 ₁₃ , respectively. Specifically, in the same unit cell disposed on the XY plane _{101 3,} 102 _3, 101 4, 102 _4, the positive terminal 121 ₃ of the cells 101 ₃ and the negative terminal 132 ₃ of the cell 102 ₃ It is connected by a power line 11 _6, thereby, is connected to the unit cell 101 ₃ adjacent the unit cell 102 ₃ each other. The single cell 102 has a positive terminal 131 _{3 3} and the negative electrode terminal 122 ₄ of the cell 101 ₄ is connected by a power line 11 _7, thereby, a unit cell 102 ₃ adjacent the unit cell 101 ₄ connected to each other Has been. Furthermore, a positive terminal 121 ₄ of the cells 101 ₄ and the negative terminal 132 ₄ of the cell 102 ₄ are connected by a power line 11 _8, thereby, a unit cell 101 ₄ adjacent the unit cell 102 ₄ connected to each other Has been. Similarly, the single cells 101 ₁ , 102 ₁ , 101 ₂ , 102 ₂ arranged on the same XY plane are connected to each other by the power lines 11 _{2 to} 11 ₄ , and the single cells arranged on the same XY plane are arranged. The batteries 101 ₅ , 102 ₅ , 101 ₆ , 102 ₆ are connected to each other by power lines 11 _{10 to} 11 ₁₂ .

Moreover, the negative terminal 122 ₃ of the cell 101 ₃ is connected to a positive electrode terminal 131 ₂ and the power line 11 ₅ of the single batteries 102 ₄ of the upper (Z-axis positive direction side) unit cells are stacked in 102 _2, which Accordingly, among the two cell group located on top of each other, a single cell 102 ₂ is connected to constitute a unit cell 101 ₃ and the other cell group constituting one cell group. Similarly, positive terminal 131 ₄ of the cell 102 _4, are connected by the negative terminal 122 ₅ and the power line 11 ₉ of the cells 101 ₅ located unit cells 101 ₃ of the lower (Z-axis negative direction side), Thus, the two cell group located on top of each other, a unit cell 101 ₅ is connected constituting the unit cell 102 ₄ and other cell group constituting one cell group. The negative electrode terminal 122 ₁ of the cell 101 _1, the positive terminal of the cell stacked in a single cell 102 ₂ the upper (Z-axis positive direction side) (not shown) are connected by a power line 11 _1, the positive terminal 131 ₆ unit cells 102 _6, the lower side of the single cell 101 ₅ negative terminal of the cell stacked in (Z-axis negative direction side) (not shown), are connected by a power line _{11 13.} As described above, in the third embodiment, the unit cells 101 and 102 arranged on the same XY plane are connected to each other through the power line 11, and one of the unit cell groups positioned above and below is connected. The unit cells 101 and 102 of the unit cell group and the unit cells 101 and 102 of the other unit cell groups are also connected by the power line 11, and the assembled battery 10 according to the third embodiment is configured.

Next, the current path of the assembled battery 10 according to the third embodiment will be described by exemplifying a scene where the assembled battery 10 is discharged. For example, when discharge is performed in the battery pack 10 according to the third embodiment, the current due to the discharge flows through the power lines 11 _{1 to} 11 ₁₃ from the power line 11 ₁ side to the power line 11 ₁₃ side. Therefore, as indicated by broken line arrow in FIG. 10, in the power line 11 _1, the power line 11 ₁ above, the current path towards the negative electrode terminal 122 ₁ of the cell 101 ₁ is formed, also in the power line 11 ₂ , a power line 11 ₂ above, the unit cell 101 ₁ of the current path extending from the positive terminal 121 ₁ side to the negative terminal 132 ₁ side of the single cell 102 ₁ is formed, and, in the power line 11 _3, the upper power line 11 _3, a single cell 102 ₁ of the current path extending from the positive terminal 131 ₁ side to the negative electrode terminal 122 ₂ side of the single cell 101 ₂ is formed in the power line 11 _4, the power line 11 ₄ on, the positive terminal of the cell 101 ₂ 121 ₂ current path extending from the side to the negative terminal 132 ₂ side of the single cell 102 ₂ is formed, further, in the power line 11 _5, the power line 11 ₅ above, the cells 10 Current path from the positive terminal 131 ₂ side ₂ to the negative electrode terminal 122 ₃ side of the cell 101 ₃ is formed.

Moreover, in the electric power line 11 ₁ and the electric power line 11 ₂ , the current path is formed as described above, so that in the unit cell 101 ₁ connected to the electric power line 11 ₁ and the electric power line 11 ₂ , as indicated by a broken arrow in FIG. , the current path extending from the negative terminal 122 ₁ of the cells 101 ₁ to the positive electrode terminal 121 ₁ of the cell 101 ₁ is formed. Similarly, in the single cell 102 ₁ connected to the power line 11 ₂ and the power line 11 _3, a current path directed from the negative terminal 132 ₁ of the cell 102 ₁ to the positive terminal 131 ₁ is formed, the power line 11 ₃ and the power line 11 ₄ in the single cell 101 ₂ to be connected to a current path extending from the negative electrode terminal 122 _{and second} unit cells 101 ₂ to the positive electrode terminal 121 ₂ is formed, the unit cells 102 ₂ connected to the power line 11 ₄ and the power line 11 _5, the unit cell current path from the negative terminal 132 ₂ 102 ₂ to the positive terminal 131 ₂ is formed. As a result, the current paths in the unit cells 101 ₁ , 102 ₁ , 102 ₂ , 102 ₂ and the power lines 11 _{1 to} 11 ₅ are continuous, as shown in FIG. Current paths are formed. The current path in the single cell _{101 1,} 102 _1, 101 2, 102 _2, shows the path of each cell _{101 1,} 102 _1, 101 2, 102 ₂ internal current of the battery to be considered from the density distribution current (The same applies to the single cells 101 _{3 to} 101 ₆ , 102 _{3 to} 102 ₆ ).

Similarly, in the cells 101 _{3 to} 101 ₆ , 102 _{3 to} 102 ₆ , and the power lines 11 _{6 to} 11 ₁₃ , a coil-shaped current path is formed as shown in FIG. In this way, the unit cells 101 and 102 arranged on the same XY plane are connected to each other by the power line 11 and each unit cell 101 and 102 constituting one unit cell group positioned above and below each other. Then, the unit cells 101 and 102 constituting the other unit cell group are connected to each other, whereby a coil-shaped current path is formed as the assembled battery 10 as a whole as shown in FIG. And when an electric current flows into the coil-shaped electric current path of the assembled battery 10, as shown by the white arrow in FIG. 10, an induction magnetic field will generate | occur | produce.

As described above, the assembled battery 10 according to the third embodiment is configured. In the third embodiment, as shown in FIG. 11, when the current path of the assembled battery 10 is viewed from the positive direction of the Z axis, the current path of the assembled battery 10 according to the third embodiment loops on the same XY plane. The loop of the current path becomes larger than the current path of the assembled battery 10 according to the first embodiment. Therefore, in the third embodiment, in addition to the effect of the first embodiment, the inductance component becomes larger, and thereby the effect that it is possible to perform more stable power line communication can be achieved. . In FIG. 11, the negative terminal 122 ₁ of the cell 101 ₁ is connected to the unit cells 102 _{and second} upper (Z-axis positive direction side) arranged unit cells of the positive electrode terminal (not shown), the unit cell 102 the positive terminal 131 ₂ of _2, since that is connected to the negative terminal 122 ₃ of the unit cells 101 ₁ of the lower unit cell 101 ₃ disposed (Z-axis negative direction side), the current as seen from the Z-axis positive direction The path is a looped loop.

<< 4th Embodiment >>
Then, 4th Embodiment of this invention is described using FIGS. FIG. 12 is a schematic diagram showing the unit cell 103 constituting the assembled battery 10 according to the fourth embodiment, FIG. 13 is a schematic diagram showing the assembled battery 10 according to the fourth embodiment, and FIG. It is the top view which looked at the assembled battery 10 shown in FIG. 13 from the Z-axis positive direction. The power line communication system according to the fourth embodiment has the same configuration and operation as those of the above-described first embodiment except for the following description, and redundant description thereof is omitted. In FIGS. 13 and 14, as in FIGS. 4 to 6, the direction of the current path of the battery pack 10 during discharge is indicated by a dashed arrow, and the direction of the induced magnetic field generated by the current path is outlined. This is indicated by an arrow.

  The assembled battery 10 according to the fourth embodiment includes a single battery 103 shown in FIG. As shown in FIG. 12, the cell 103 constituting the assembled battery 10 according to the fourth embodiment includes a positive electrode terminal 141 and a negative electrode terminal 142 from the two opposing short sides of the outer peripheral edge of the cell 103. Derived. In addition, the number of the cell 103 which comprises the assembled battery 10 which concerns on 4th Embodiment is not specifically limited.

In FIG. 13, twelve unit cells 103 _{1 to} 103 ₁₂ are illustrated among the plurality of unit cells 103 constituting the assembled battery 10 according to the fourth embodiment. As shown in FIG. 13, among the single cells 103 _{1 to} 103 ₁₂ constituting the assembled battery 10 according to the fourth embodiment, the single cells 103 _{5 to} 103 ₈ are arranged on the same XY plane, and one single cell A battery group is configured. Similarly, out of the unit cells 103 _{1 to} 103 ₁₂ constituting the assembled battery 10, the unit cells 103 _{1 to} 103 ₄ and the unit cells 103 _{9 to} 103 ₁₂ are also arranged on the same XY plane, respectively. It constitutes a group. And the assembled battery 10 which concerns on 4th Embodiment is comprised as shown in FIG. 13 by laminating | stacking the several cell group comprised in this way.

Among the unit cells 103 _{1 to} 103 ₄ constituting one unit cell group, the unit cell 103 ₁ and the unit cell 103 ₄ that are adjacent to each other are sides that lead out the negative electrode terminal 142 ₂ of the unit cell 103 _1. , together with the side to derive the positive terminal 141 ₄ of the cell 103 ₄ are arranged next to each other, is ₁ and unit cell 103 adjacent to each other and the single cell 103 _2, the unit cell 103 ₁ of the positive terminal 141 and the side that is not derived ₁ and the negative terminal 142 _1, and the side that does not derive the unit cells 103 ₂ of the positive electrode terminal 141 ₂ and the negative electrode terminal 142 ₂ is arranged so as to be adjacent to each other. In this way, the single cells 103 constituting the single cell group are arranged so that one single cell 103 constituting the single cell group and the sides from which the positive electrode terminal 141 or the negative electrode terminal 142 are led out are adjacent to each other. In addition, the other unit cells 103 constituting the unit cell group and the sides from which the positive electrode terminal 141 and the negative electrode terminal 142 are not led out are arranged adjacent to each other.

Further, as shown in FIG. 13, the single cells 103 _{1 to} 103 ₁₂ are connected by power lines 11 _{1 to} 11 ₁₃ , respectively. Specifically, in the unit cell ₁₀₃ 5-103 ₈ disposed on the same XY plane, the positive terminal 141 ₅ of the cells 103 ₅ and the negative terminal 142 ₆ unit cells 103 ₆ are connected by a power line 11 ₆ and, by this, and is connected to the unit cells 103 ₅ adjacent the unit cells 103 ₆ to each other. Further, the positive electrode terminal 141 ₆ unit cells 103 ₆ and the negative electrode terminal 142 ₇ of the unit cells 103 ₇ is connected by the power line 11 _7, by which is connected to the unit cells 103 ₆ adjacent the battery cells 103 ₇ together ing. Furthermore, a positive terminal 141 ₇ of the cell 103 ₇ and the negative terminal 142 ₈ of the unit cells 103 ₈ are connected by a power line 11 _8, thereby, a unit cell 103 ₇ adjacent the unit cell 103 ₈ connected to each other Has been. Likewise, the same unit cell disposed on the XY plane ₁₀₃ 1 to 103 ₄ are also connected to each other by the power line ₁₁ 2-11 _4, also, the same unit cell disposed on the XY plane ₁₀₃ 9-103 ₁₂ are also connected to each other by power lines 11 _{10 to} 11 ₁₂ .

Moreover, the negative terminal 142 ₅ of the cell 103 ₅ is connected by the positive electrode terminal 141 ₄ and the power line 11 ₅ of the cells 103 ₄ laminated on the upper side of the unit cells 103 ₈ (Z-axis positive direction), which by being located out of the two cell group which, connected to the unit cell 103 ₄ constituting the unit cell 103 ₅ and other cell group constituting one cell group is on top of each other. Similarly, positive terminal 141 ₈ of the unit cells 103 ₈ are connected by the negative terminal 142 ₉ and the power line 11 ₉ of the cells 103 ₉ stacked on the lower side of the cell 103 ₅ (Z-axis negative direction side) , thereby, is connected of the two cell group located on top of each other, a unit cell 103 ₉ constituting the unit cell 103 ₈ and other cell group constituting one cell group is. The negative electrode terminal 142 ₁ of the cell 103 _1, unit cell 103 ₄ of the upper positive terminal of the cell stacked in (Z-axis positive direction side) (not shown) are connected by a power line 11 _1, the positive terminal _{141 12} of the unit cells _{103 12,} the unit cell 103 ₉ below the negative terminal of the cell stacked in (Z-axis negative direction side) (not shown), are connected by a power line _{11 13.} As described above, in the fourth embodiment, the unit cells 103 arranged on the same XY plane are connected to each other via the power line 11, and one unit cell among the unit cell groups positioned above and below each other. The unit cell 103 and the unit cell 103 of another unit cell group are also connected by the power line 11, and the assembled battery 10 which concerns on 4th Embodiment is comprised.

Next, the current path of the assembled battery 10 according to the fourth embodiment will be described by exemplifying a scene where the assembled battery 10 is discharged. For example, when discharge is performed in the assembled battery 10 according to the fourth embodiment, the current due to the discharge flows through the power lines 11 _{1 to} 11 ₁₃ from the power line 11 ₁ side to the power line 11 ₁₃ side. Therefore, as indicated by broken line arrow in FIG. 13, in the power line 11 _1, the power line 11 ₁ above, the current path towards the negative terminal 142 ₁ of the cell 103 ₁ is formed, also in the power line 11 ₂ , a power line 11 ₂ above, the unit cell 103 ₁ of the current path extending from the positive terminal 141 ₁ side to the negative electrode terminal 142 ₂ side of the single cell 103 ₂ is formed in the power line 11 _3, the upper power line 11 _3, a single cell 103 _second current path extending from the positive terminal 141 ₂ side to the negative electrode terminal 142 ₃ side of the cell 103 ₃ is formed, and, in the power line 11 _4, the power line 11 ₄ on the positive electrode terminal 141 ₃ of the cell 103 ₃ current path extending from the side to the negative electrode terminal 142 ₄ side of the cell 103 ₄ is formed, further, in the power line 11 _5, the power line 11 ₅ above, the cells 10 Current path from the positive terminal 141 ₄ side ₄ to the negative terminal 142 ₅ side of the cell 103 ₅ can be formed.

Further, in the power line 11 ₁ and the power line 11 ₂ , the current path is formed as described above, so that the unit cell 103 ₁ connected to the power line 11 ₁ and the power line 11 ₂ has a broken line arrow in FIG. , the current path extending from the negative terminal 142 ₁ of the cell 103 ₁ to the positive terminal 141 ₁ of the cell 103 ₁ is formed. Similarly, in the unit cell 103 ₂ connected to the power line 11 ₂ and the power line 11 _3, a current path extending from the negative terminal 142 ₂ of the unit cells 103 ₂ to the positive electrode terminal 141 ₂ is formed, the power line 11 ₃ and the power line 11 ₄ in the unit cell 103 ₃ connected to a current path extending from the negative terminal 142 ₃ of the cell 103 ₃ to the positive electrode terminal 141 ₃ is formed, the unit cells 103 ₄ connected to the power line 11 ₄ and the power line 11 _5, the unit cell 103 ₄ of the current path extending from the negative terminal 142 ₄ to the positive electrode terminal 141 ₄ are formed. As a result, the current paths in the unit cells 103 _{1 to} 103 ₄ and the power lines 11 _{1 to} 11 ₅ are continuous, and a coil-shaped (substantially wound around) current path is formed as shown in FIG. The Rukoto. The current path in the single cell ₁₀₃ 1 to 103 _4, there is shown the path of the current inside the battery that is considered the current density distribution of each cell ₁₀₃ 1 to 103 ₄ inside (hereinafter, the unit cells ₁₀₃ 5 ~ the same in 103 _12.).

Similarly, in the unit cells 103 _{5 to} 103 ₁₂ and the power lines 11 _{6 to} 11 ₁₃ , as shown in FIG. 13, a coiled current path is formed. In this way, the unit cells 103 arranged on the same XY plane are connected to each other by the power line 11, and the unit cell 103 constituting one unit cell group positioned above and below each other and the other unit cells. The unit cells 103 constituting the battery group are connected to each other by the power line 11, thereby forming a coil-shaped current path as the entire assembled battery 10 as shown in FIG. 13. And when an electric current flows into the coil-shaped electric current path of the assembled battery 10, as shown by the white arrow in FIG. 13, an induction magnetic field will generate | occur | produce.

As described above, the assembled battery 10 according to the fourth embodiment is configured. In the fourth embodiment, as illustrated in FIG. 14, when the current path of the assembled battery 10 is viewed from the positive Z-axis direction, the current path of the assembled battery 10 according to the fourth embodiment is looped on the same XY plane. The loop of the current path becomes larger than the current path of the assembled battery 10 according to the first embodiment. Therefore, in the fourth embodiment, in addition to the effect of the first embodiment, the inductance component becomes larger, and thereby an effect that it is possible to perform more stable power line communication can be achieved. . In FIG. 14, the negative terminal 142 ₁ of the cell 103 ₁ is connected to the unit cells 103 ₄ of the upper (Z-axis positive direction side) arranged unit cells of the positive electrode terminal (not shown), the unit cell 103 ₄ of the positive terminal 141 _4, since is for connecting the negative terminal 142 ₅ of the cells 103 ₅ disposed in the single cell 103 ₁ of the lower (Z-axis negative direction), the Z-axis positive direction The viewed current path is a looped loop.

<< 5th Embodiment >>
Subsequently, a fifth embodiment of the present invention will be described with reference to FIGS. 15 and 16. FIG. 15 is a schematic view showing the assembled battery 10 according to the fifth embodiment, and FIG. 16 is a plan view of the assembled battery 10 shown in FIG. 15 viewed from the positive direction of the Z axis. The power line communication system according to the fifth embodiment has the same configuration and operation as those of the above-described first embodiment except for the following description, and redundant description thereof is omitted. 15 and 16, as in FIGS. 4 to 6, the direction of the current path of the battery pack 10 during discharge is indicated by a broken-line arrow, and the direction of the induced magnetic field generated by the current path is outlined. This is indicated by an arrow.

  The assembled battery 10 according to the fifth embodiment includes the unit cell 103 shown in FIG. 13, that is, the unit cell in which the positive electrode terminal 141 and the negative electrode terminal 142 are led out from two opposing short sides. In addition, the number of the cell 103 which comprises the assembled battery 10 which concerns on 5th Embodiment is not specifically limited.

In FIG. 15, twelve unit cells 103 _{1 to} 103 ₁₂ are illustrated among the plurality of unit cells 103 constituting the assembled battery 10 according to the fifth embodiment. As shown in FIG. 15, the single cells 103 _{1 to} 103 ₄ among the single cells 103 _{1 to} 103 ₁₂ constituting the assembled battery 10 according to the fifth embodiment are arranged at the same height position in the Z-axis direction, A single cell group is formed. The single cell ₁₀₃ 1 to 103 _4, as shown in FIG. 15, the main surface of each cell ₁₀₃ 1 to 103 ₄ are arranged so as to be substantially perpendicular to the XY plane. Similarly, the unit cells 103 _{5 to} 103 ₈ and the unit cells 103 _{9 to} 103 ₁₂ are also arranged at the same height position in the Z-axis direction to form a unit cell group, and each unit cell 103 ₅ to 103- The main surfaces of 103 ₈ , 103 _{9 to} 103 ₁₂ are arranged so as to be substantially perpendicular to the XY plane. And the assembled battery 10 which concerns on 5th Embodiment is comprised as shown in FIG. 15 by laminating | stacking the several cell group comprised in this way.

Then, among the unit cells ₁₀₃ 1 to 103 ₄ constituting these one cell group, unit cell 103 ₁ and the unit cell 103 _2, and the side of the positive electrode terminal 141 ₁ of the cell 103 ₁ is derived, single-cell with 103 and the side negative electrode terminal 142 ₂ of ₂ derives are arranged next to each other, the unit cell 103 ₁ and unit cell 103 ₄ adjacent to each other, the negative terminal 142 ₁ of the cell 103 ₁ is derived and the side, and the side of the positive terminal 141 ₄ of the cell 103 ₄ derives are arranged next to each other. Similarly, the unit cells 103 adjacent to each other are arranged such that the sides from which the positive electrode terminal 141 or the negative electrode terminal 142 are led out are adjacent to each other.

Further, as shown in FIG. 15, the single cells 103 _{1 to} 103 ₁₂ are connected by power lines 11 _{1 to} 11 ₁₃ , respectively. Specifically, in the single cell ₁₀₃ 1 to 103 ₄ constituting one cell group, the positive terminal 141 ₁ of the cells 103 ₁ and the negative electrode terminal 142 _{and second} unit cells 103 ₂ are connected by power lines 11 ₂ cage, thereby, is connected adjacent unit cells 103 ₁ and the unit cell 103 ₂ with each other. Moreover, the negative terminal ₁₄₂₃ of the cell ₁₀₃₂ of the positive terminal 141 ₂ and the single cell 103 ₃ is connected by a power line 11 _3, by which, is connected to the unit cell 103 ₂ with unit cell 103 ₃ adjacent to each other ing. Furthermore, a positive terminal 141 ₃ of the cells 103 ₃ and the negative terminal 142 ₄ of the cell 103 ₄ are connected by a power line 11 _4, thereby, a unit cell 103 ₃ adjacent the unit cell 103 ₄ connected to each other Has been. Likewise, single batteries ₁₀₃ 5-103 ₈ constituting one cell group are also connected to each other by the power line ₁₁ 6-11 _8, also single cell ₁₀₃ 9-103 ₁₂ constituting one cell group The power lines 11 _{10 to} 11 ₁₂ are connected to each other.

Furthermore, the negative terminal 142 ₅ of the cell 103 ₅ is connected by the positive electrode terminal 141 ₄ and the power line 11 ₅ of the cells 103 ₄ laminated on the upper side of the unit cells 103 ₈ (Z-axis positive direction), which by being located out of the two cell group which, connected to the unit cell 103 ₄ constituting the unit cell 103 ₅ and other cell group constituting one cell group is on top of each other. Similarly, positive terminal 141 ₈ of the unit cells 103 ₈ are connected by the negative terminal 142 ₉ and the power line 11 ₉ of the cells 103 ₉ stacked on the lower side of the cell 103 ₅ (Z-axis negative direction side) , thereby, is connected of the two cell group located on top of each other, a unit cell 103 ₉ constituting the unit cell 103 ₈ and other cell group constituting one cell group is. The negative electrode terminal 142 ₁ of the cell 103 _1, unit cell 103 ₄ of the upper positive terminal of the cell stacked in (Z-axis positive direction side) (not shown) are connected by a power line 11 _1, the positive terminal _{141 12} of the unit cells _{103 12,} the unit cell 103 ₉ below the negative terminal of the cell stacked in (Z-axis negative direction side) (not shown), are connected by a power line _{11 13.} As described above, in the fifth embodiment, the unit cells 103 constituting one unit cell group are connected to each other via the power line 11, and one unit cell group among the unit cell groups positioned above and below each other. The unit cell 103 and the unit cell 103 of another unit cell group are also connected by the power line 11, and the assembled battery 10 which concerns on 5th Embodiment is comprised.

Next, the current path of the assembled battery 10 according to the fifth embodiment will be described by exemplifying a scene where the assembled battery 10 is discharged. For example, when discharge is performed in the assembled battery 10 according to the fifth embodiment, the current due to the discharge flows through the power lines 11 _{1 to} 11 ₁₃ from the power line 11 ₁ side to the power line 11 ₁₃ side. Therefore, as indicated by broken line arrow in FIG. 15, in the power line 11 _1, the power line 11 ₁ above, the current path towards the negative terminal 142 ₁ of the cell 103 ₁ is formed, also in the power line 11 ₂ , a power line 11 ₂ above, the unit cell 103 ₁ of the current path extending from the positive terminal 141 ₁ side to the negative electrode terminal 142 ₂ side of the single cell 103 ₂ is formed in the power line 11 _3, the upper power line 11 _3, a single cell 103 _second current path extending from the positive terminal 141 ₂ side to the negative electrode terminal 142 ₃ side of the cell 103 ₃ is formed, and, in the power line 11 _4, the power line 11 ₄ on the positive electrode terminal 141 ₃ of the cell 103 ₃ current path extending from the side to the negative electrode terminal 142 ₄ side of the cell 103 ₄ is formed, further, in the power line 11 _5, the power line 11 ₅ above, the cells 10 Current path from the positive electrode terminal 141 ₄ side ₄ to the negative terminal 142 ₅ side of the cell 103 ₅ can be formed.

Further, in the power line 11 ₁ and the power line 11 ₂ , the current path is formed as described above, so that the unit cell 103 ₁ connected to the power line 11 ₁ and the power line 11 ₂ has a broken line arrow in FIG. , the current path extending from the negative terminal 142 ₁ of the cell 103 ₁ to the positive terminal 141 ₁ of the cell 103 ₁ is formed. Similarly, in the unit cell 103 ₂ connected to the power line 11 ₂ and the power line 11 _3, a current path extending from the negative terminal 142 ₂ of the unit cells 103 ₂ to the positive electrode terminal 142 ₂ is formed, the power line 11 ₃ and the power line 11 ₄ in the unit cell 103 ₃ connected to a current path extending from the negative terminal 142 ₃ of the cell 103 ₃ to the positive electrode terminal 141 ₃ is formed, the unit cells 103 ₄ connected to the power line 11 ₄ and the power line 11 _5, the unit cell 103 ₄ of the current path extending from the negative terminal 142 ₄ to the positive electrode terminal 141 ₄ are formed. As a result, the current paths in the unit cells 103 _{1 to} 103 ₄ and the power lines 11 _{1 to} 11 ₅ are continuous, and a coil-shaped (substantially wound around) current path is formed as shown in FIG. The Rukoto. The current path in the single cell ₁₀₃ 1 to 103 _4, there is shown the path of the current inside the battery that is considered the current density distribution of each cell ₁₀₃ 1 to 103 ₄ inside (hereinafter, the unit cells ₁₀₃ 5 ~ the same in 103 _12.).

Similarly, in the cells 103 _{5 to} 103 ₁₂ and the power lines 11 _{6 to} 11 ₁₃ , coil-shaped current paths are formed as shown in FIG. As described above, the unit cells 103 constituting one unit cell group are connected to each other by the power line 11, and the unit cell 103 constituting one unit cell group and the unit cell constituting another unit cell group are connected. By connecting the battery 103 to each other, as shown in FIG. 15, a coil-shaped current path is formed in the assembled battery 10 as a whole. And when an electric current flows into the coil-shaped electric current path of the assembled battery 10, an induced magnetic field will generate | occur | produce as shown by the white arrow in FIG.

As described above, the assembled battery 10 according to the fifth embodiment is configured. In the fifth embodiment, as shown in FIG. 16, when the current path of the assembled battery 10 is viewed from the positive direction of the Z axis, the current path of the assembled battery 10 according to the fifth embodiment is looped on the same XY plane. The loop of the current path becomes larger than the current path of the assembled battery 10 according to the first embodiment. Therefore, in the fifth embodiment, in addition to the effect of the first embodiment, the inductance component becomes larger, and thereby the effect that it is possible to perform more stable power line communication can be achieved. . In FIG. 16, the negative terminal 142 ₁ of the cell 103 ₁ is connected to the unit cells 103 ₄ of the upper (Z-axis positive direction side) arranged unit cells of the positive electrode terminal (not shown), the unit cell 103 ₄ of the positive terminal 141 _4, since that is connected to the negative terminal 142 ₅ of the cells 103 ₅ disposed in the single cell 103 ₁ of the lower (Z-axis negative direction side), the current as seen from the Z-axis positive direction The path is a looped loop.

  Moreover, in the assembled battery 10 according to the fifth embodiment, as shown in FIGS. 15 and 16, each unit cell 103 constituting the unit cell group has a main surface of each unit cell 103 viewed from the positive direction of the Z axis. It is arranged vertically on the XY plane toward the center point of the loop current path. Thereby, since the positive electrode terminal 141 of one adjacent unit cell 103 and the negative electrode terminal 142 of another unit cell 103 can be brought close to each other, the power line 11 connecting the unit cells 103 can be shortened. The manufacturing cost of the assembled battery 10 can be further reduced. In particular, if the positive electrode terminal 141 of one adjacent unit cell 103 and the negative electrode terminal 142 of another unit cell 103 are directly connected, the power line 11 for connecting the unit cells 103 constituting the unit cell group is omitted. be able to.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  The unit cells 100, 101, 102, and 103 of the above-described embodiments correspond to the unit cell of the present invention, the assembled battery 10 corresponds to the assembled battery of the present invention, and the power line 11 corresponds to the power line of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Battery pack 100, 101, 102, 103 ... Single cell 11 ... Power line 6 ... Battery control part 7 ... PLC cordless handset 8 ... PLC master phone

Claims (12)

In an assembled battery formed by connecting a plurality of single cells in series with a power line that can be used as a communication line,
Arrangement positions between the individual cells constituting the assembled battery so that the assembled battery forms a coiled current path, and an inductance component is generated in the assembled battery as a whole by an induced magnetic field generated by the coiled current path. And a lead-out position and a lead-out direction of the positive electrode terminal and the negative electrode terminal of each unit cell are set.
The assembled battery according to claim 1,
Each unit cell has a structure in which the positive electrode terminal and the negative electrode terminal are led out from one side of the unit cell,
The assembled battery, wherein the plurality of single cells are stacked such that a positive electrode terminal and a negative electrode terminal of two or more single cells of the plurality of single cells overlap each other when viewed from the stacking direction. The assembled battery according to claim 2,
An assembled battery, wherein a positive electrode terminal and a negative electrode terminal of unit cells positioned above and below are connected to each other by the power line so that the assembled battery has a coil-shaped current path. The assembled battery according to claim 1,
Two or more unit cells are arranged on substantially the same plane so that the current paths are looped on the substantially same plane, and
An assembled battery, wherein two or more unit cell groups composed of two or more unit cells arranged on the substantially same plane are stacked so that the assembled battery has a coiled current path. The assembled battery according to claim 4,
Among the single cells constituting the single cell group, the positive terminals and the negative terminals of the adjacent single cells are connected by the power line so that the current paths are looped on substantially the same plane. The assembled battery. The assembled battery according to claim 5,
In the unit cell group positioned one above the other so that the assembled battery has a coil-shaped current path, the positive terminal of the unit cell constituting one unit cell group and the unit cell constituting another unit cell group An assembled battery, wherein a negative electrode terminal is connected by the power line. The assembled battery according to any one of claims 4 to 6,
The unit cell group is composed of two unit cells,
Each single cell constituting the single cell group has a structure in which the positive electrode terminal and the negative electrode terminal are led out from one side of the single cell,
The single cells constituting the single cell group are arranged so that the sides from which the positive terminal and the negative terminal are led out are adjacent to each other so that the current paths are in a loop shape on substantially the same plane. A battery pack characterized by having The assembled battery according to any one of claims 4 to 6,
The unit cell group is composed of four or more unit cells,
Each single cell constituting the single cell group has a structure in which the positive electrode terminal and the negative electrode terminal are derived from two adjacent sides, respectively.
The single cells constituting the single cell group are arranged so that the sides from which the positive terminal and the negative terminal are led out are adjacent to each other so that the current paths are in a loop shape on substantially the same plane. A battery pack characterized by having The assembled battery according to any one of claims 4 to 6,
The unit cell group is composed of four or more unit cells,
Each single cell constituting the single cell group has a structure in which the positive electrode terminal and the negative electrode terminal are led out from two opposite sides of the single cell,
The unit cells constituting the unit cell group are configured such that one unit cell and sides from which the positive electrode terminal or the negative electrode terminal are led out are arranged so that the current paths are in a loop shape on substantially the same plane. An assembled battery, which is arranged so as to be adjacent to each other, and is arranged so that other single cells and sides where the positive electrode terminal and the negative electrode terminal are not led out are adjacent to each other. The assembled battery according to claim 1,
Each of the unit cells has a structure in which the positive electrode terminal and the negative electrode terminal are led out from two opposite sides of the unit cell,
The two or more unit cells are arranged so that their main surfaces are substantially perpendicular to the loop forming surface so that the current paths are in a loop shape on substantially the same plane, and the positive terminal or the negative terminal Are arranged so that the sides derived from are adjacent to each other, and
A unit cell group composed of two or more unit cells arranged so as to be substantially perpendicular to the loop forming surface so that the assembled battery has a coil-shaped current path is arranged in a direction substantially perpendicular to the loop forming surface. Two or more battery packs arranged side by side. The assembled battery according to claim 10,
Among the single cells constituting the single cell group, the positive terminals and the negative terminals of the adjacent single cells are connected by the power line so that the current paths are looped on substantially the same plane. The assembled battery. The assembled battery according to claim 11,
In the unit cell group positioned one above the other so that the assembled battery has a coil-shaped current path, the positive terminal of the unit cell constituting one unit cell group and the unit cell constituting another unit cell group An assembled battery, wherein a negative electrode terminal is connected by the power line.

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