Battery pack, and electronic equipment unit including the same

Abstract

To suppress occurrence of an adverse effect on a radio communication function.SOLUTION: A battery pack 1 includes: a body case 2; a board 5 provided in the body case 2; a battery cell 6 provided in the body case 2 and disposed on one side of the board 5; an input part 9 and an output part 10; and a control part 16 controlling output from the output part 10. The control part 16 is mounted on the board 5. The battery cell 6 includes an outer peripheral case. A radio module 12 connected to the control part 16 is disposed on the one side of the board 5. The radio module 12 includes a radio antenna 14.SELECTED DRAWING: Figure 12

Description

Technical Field

[0001] The present invention relates to a battery pack and an electronic device unit using the same.

Background Art

[0002] In recent years, due to the increase in the capacity of battery packs, electronic device units such as cooling clothes with fans and heating clothes with heaters using such battery packs have been commercially available.

[0003] The battery pack has a configuration including a main body case, a substrate provided in the main body case, a battery cell disposed on one surface side of the substrate, an input unit for charging the battery cell, an output unit for discharging from the battery cell, and a control unit for controlling the output from the output unit. Further, the input unit, the output unit, and the control unit are mounted on a first substrate.

[0004] Furthermore, a wireless module connected to the control unit is disposed on the other surface side of the first substrate, and this wireless module has a wireless antenna (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the conventional example, by disposing the battery cell on one surface side of the substrate and the wireless module on the other surface side, the wireless module is separated from the battery cell to suppress the influence of the metal outer peripheral surface (outer peripheral case surface) of the battery cell on the wireless communication function.

[0007] However, with such a configuration, the wireless module is in a state close to the surface side of the main body case, and in recent years, cases have been found where this has an adverse effect on the wireless communication function.

[0008] That is, the battery pack is used, for example, stored in a pocket of clothes. When a metal key is placed in this pocket, the metal key and the wireless module are in a close state, so there may be an adverse effect on the wireless communication function.

[0009] In particular, in recent years, for example, wireless keys are often used as car keys. When the wireless key is close to the wireless module of the battery pack, due to the interference between the two, there may be an adverse effect on the wireless communication function on both the battery pack side and the car side.

[0010] Therefore, an object of the present invention is to suppress the occurrence of an adverse effect on the wireless communication function.

Means for Solving the Problem

[0011] To achieve the above object, in one aspect of the present disclosure, a battery pack including a main body case, a first substrate provided in the main body case, a battery cell provided in the main body case and disposed on one surface side of the first substrate, an input part for charging the battery cell, an output part for discharging from the battery cell, and a control part for controlling the output from the output part can be assumed. The control part is mounted on the first substrate, and the battery cell has a cylindrical outer peripheral case. On one surface side of the first substrate, a wireless module connected to the control part is disposed, and the wireless module has a wireless antenna. Further, the outer peripheral case can be made of metal and be cylindrical.

[0012] Also, the input part, the output part, and the wireless module may be disposed on one surface side of the first substrate.

[0013] Also, on one side of the first substrate within the main body case, a battery cell accommodating portion in which a plurality of the battery cells are accommodated in a state of being arranged in a predetermined direction, and a functional component accommodating portion in which the input portion, the output portion, and the wireless module are accommodated outside the battery cell accommodating portion may be provided.

[0014] The first substrate may be accommodated in the functional component accommodating portion, and the input portion, the output portion, and the wireless module may be arranged on the outer peripheral portion of the first substrate.

[0015] The wireless module may be arranged on the outer peripheral portion of the first substrate in the functional component accommodating portion, on the opposite side of the output portion of the input portion across the input portion in the plane direction of the first substrate, or on the opposite side of the input portion of the output portion across the output portion.

[0016] A USB (Universal Serial Bus) terminal is arranged between the input portion and the output portion on the outer peripheral portion of the first substrate in the functional component accommodating portion, and the wireless module may be arranged on the opposite side of the USB terminal of the input portion across the USB terminal in the plane direction of the first substrate, or on the opposite side of the USB terminal of the output portion across the USB terminal.

[0017] A second substrate different from the first substrate is arranged within the main body case, and the wireless module connected to the control portion is arranged on the surface of the second substrate facing the battery cell, and the wireless module may have a wireless antenna.

[0018] Also, in another aspect of the present disclosure, an electronic device unit including a battery pack and an electronic device that receives power supply from the battery pack can also be provided.

Advantages of the Invention

[0019] As described above, in the present disclosure, a wireless module having a wireless antenna can be disposed on the battery cell side of the first substrate, and a wireless module having a wireless antenna can be disposed on a second substrate disposed on the battery cell side of the first substrate. As a result, the wireless antenna does not come close to the outer surface of the main body case. Consequently, even when the battery pack is stored in a pocket together with a wireless key such as a metal key or an automobile, the occurrence of an adverse effect on the wireless communication function due to these metal keys or wireless keys can be suppressed.

[0020] In addition, the positional relationship between the wireless module and the battery cell on one surface side of the first substrate is always in a constant state, and communication by the wireless antenna is sufficiently stabilized by using the reflection action from the metal portion of the battery cell disposed together with the wireless module on one surface side of the first substrate.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

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Embodiments for Carrying Out the Invention

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its applications, or its uses.

[0023] (Embodiment 1) FIG. 1 shows the appearance of a battery pack 1 according to Embodiment 1 of the present invention, and FIG. 2 shows a cross-section of the battery pack 1. Also, FIGS. 3 and 9 are exploded perspective views of the battery pack 1. The battery pack 1 includes a main body case 2 made of, for example, a resin material. The main body case 2 has an upper case constituent member 3 and a lower case constituent member 4. A substrate 5 is accommodated in the main body case 2, and a plurality of battery cells 6 are accommodated. FIGS. 4 to 8, FIG. 10, and FIG. 11 show the substrate 5 and the battery cells 6 with the main body case 2 omitted.

[0024] In the description of this embodiment, as shown in each figure, the front side, the back side, the left side, and the right side are defined. Also, the front side of the battery pack 1 is the side facing upward in FIG. 1, and the back side of the battery pack 1 is the side facing downward in FIG. 1. The front side of the battery pack 1 is also referred to as the upper side, and the back side of the battery pack 1 is also referred to as the lower side. The front-back direction of the battery pack 1 is taken as the thickness direction of the battery pack 1. These definitions are only for the convenience of explaining the embodiment and do not limit the direction of the battery pack 1 during use or manufacturing. For example, the posture of the battery pack 1 during use can be any posture.

[0025] The main body case 2 has a shape close to a rectangular parallelepiped, although it is not particularly limited. The upper case component member 3 has a shape in which the front surface portion, the left and right side surface portions, the front side surface portion, and the back side surface portion of the main body case 2 are integrated, and substantially the entire lower side is open. On the front side surface portion of the upper case component member 3, a first opening 3a, a second opening 3b, and a third opening 3c are formed so as to be arranged in the left-right direction. Further, the lower case component member 4 is attached to the lower side of the upper case component member 3 and is a member that closes the open portion on the lower side of the upper case component member 3.

[0026] As shown in FIG. 2, the substrate 5 is housed in a portion closer to the upper side than the central portion in the vertical direction within the main body case 2 and is arranged so as to be substantially parallel to the front surface portion of the main body case 2. As shown in FIG. 3 and the like, the shape of the substrate 5 is substantially rectangular.

[0027] In this embodiment, the case where four battery cells 6 are housed in the main body case 2 will be described. However, the number of battery cells 6 is not limited to four, and it may be one or any plural number. The battery cell 6 is, for example, a lithium ion battery or the like, is made of metal, and has a cylindrical outer peripheral case 6a (reference numeral 6a is shown only in FIG. 3).

[0028] The battery cell 6 is arranged below the substrate 5 within the main body case 2. The lower side of the substrate 5 is defined as one surface side of the substrate 5, and the upper side of the substrate 5 is defined as the other surface side of the substrate 5. Within the main body case 2, since the substrate 5 is located closer to the upper side, the space below the substrate 5 is wider than the space above, and the battery cells 6 are arranged and housed in the relatively wide space below the substrate 5.

[0029] Each battery cell 6 has a cylindrical shape, with one axial end being the positive electrode part (also referred to as one of the electrodes) and the other axial end being the negative electrode part (also referred to as the other electrode). The attitude of each battery cell 6 within the main body case 2 is set such that the axial direction of the battery cell 6 points in the left - right direction (also referred to as one direction) of the main body case 2. Also, the arrangement direction of the battery cells 6 is in the depth direction of the main body case 2 (also referred to as the other direction orthogonal to the one direction in plan view), and four battery cells 6 are held in a state of being arranged in the depth direction within the main body case 2. As shown in FIG. 2, a space where no battery cell 6 is accommodated is formed on the front side within the main body case 2, and the front - side portion of the substrate 5 extends to the space where no battery cell 6 is accommodated.

[0030] As shown in FIGS. 2 and 3, on the inner surface of the lower - side case - forming member 4, a partition piece 8 is provided so as to protrude upward and extend in the left - right direction. The partition piece 8 is inserted between adjacent battery cells 6. By inserting the partition piece 8 between adjacent battery cells 6, a plurality of battery cells 6 are constantly and stably held at predetermined positions with respect to the substrate 5.

[0031] As shown in FIGS. 4 and 5, a plurality of connection terminals 7 that conduct with the electrodes of the battery cells 6 are provided at the left - edge portion and the right - edge portion of the substrate 5, respectively. The connection terminals 7 protrude downward from the substrate 5 and are members for electrically connecting the battery cells 6 to each other and for electrically connecting the battery cells 6 to an electric circuit (specifically, the charge - discharge control unit 15 shown in FIG. 12) on the substrate 5. They are composed of thin - plate - shaped conductors. Each connection terminal 7 is fixed to the electrode of the battery cell 6 by soldering or the like.

[0032] Below the substrate 5 within the main body case 2, a battery - cell accommodation portion R1 and a functional - component accommodation portion R2 are provided. The battery - cell accommodation portion R1 is a portion where a plurality of battery cells 6 are accommodated in a state of being arranged in the depth direction (predetermined direction), and is continuously provided from the back side to a portion close to the front side on the lower side of the substrate 5 within the main body case 2. The size of the battery - cell accommodation portion R1 is set to be larger than that of the functional - component accommodation portion R2.

[0033] The functional component housing part R2 is provided outside the battery cell housing part R1 and is located on the front side below the substrate 5 in the main body case 2. The functional component housing part R2 is a part where the input part 9 for charging the battery cell, the output part 10 for discharging from the battery cell, the USB (Universal Serial Bus) terminal 11, and the wireless module 12 are housed. That is, as shown in FIG. 5 and the like, on the lower surface of the substrate 5, the input part 9, the output part 10, the USB terminal 11, and the wireless module 12 are mounted near the front edge (outer peripheral part) of the substrate 5. The input part 9, the output part 10, the USB terminal 11, and the wireless module 12 are to be housed in the functional component housing part R2 in a state of being fixed to the outer peripheral part of the substrate 5 (the part extending to the functional component housing part R2 of the substrate 5).

[0034] The input part 9 is arranged near the left edge of the substrate 5 and is a part that is electrically connected in a state where a charging terminal (not shown) is inserted. The part where the charging terminal is inserted in the input part 9 is open, and this opening faces the front side. The second opening 3b of the upper case constituent member 3 and the opening of the input part 9 are made to coincide, and the charging terminal inserted into the second opening 3b of the upper case constituent member 3 is inserted into the opening of the input part 9.

[0035] The output part 10 is arranged near the right edge of the substrate 5 and is a part that is electrically connected in a state where an output terminal (not shown) is inserted. The part where the output terminal is inserted in the output part 10 is open, and this opening faces the front side. The first opening 3a of the upper case constituent member 3 and the opening of the output part 10 are made to coincide, and the output terminal inserted into the first opening 3a of the upper case constituent member 3 is inserted into the opening of the output part 10.

[0036] The USB terminal 11 is disposed between the input portion 9 and the output portion 10 of the substrate 5, and is the portion that is electrically connected in a state where a male connector of USB is inserted. The USB terminal 11 has an opening into which a male connector provided in a charging cable for charging a portable terminal such as a smartphone can be inserted, and this opening faces the hand side. The power of the battery cell 6 is output from the USB terminal 11 and used as power for charging a portable terminal via a charging cable. The third opening 3c of the upper case constituent member 3 and the opening of the USB terminal 11 are made to coincide, and the male connector inserted into the third opening 3c of the upper case constituent member 3 is inserted into the opening of the USB terminal 11.

[0037] The wireless module 12 is disposed near the right edge portion of the substrate 5. That is, the wireless module 12 is the outer peripheral portion of the substrate 5 in the functional component housing portion R2, and is disposed on the opposite side across the output portion 10 from the input portion 9 in the plane direction of the substrate 5. Thereby, the wireless module 12 can be separated from the input portion 9. Note that the wireless module 12 may be disposed on the opposite side across the input portion 9 in the left - right direction of the output portion 10. Thereby, the wireless module 12 can be separated from the input portion 9.

[0038] Also, the wireless module 12 may be disposed on the opposite side across the USB terminal 11 of the input portion 9 in the plane direction of the substrate 5. Also, the wireless module 12 may be disposed on the opposite side across the USB terminal 11 of the output portion 10.

[0039] FIG. 12 is a control block diagram. The input portion 9, the output portion 10, and the USB terminal 11 are connected to the control portion 16 via the charge - discharge control portion 15. The control portion 16 is constituted by, for example, a microcomputer, a memory, etc., and operates according to a program stored in advance. The control portion 16 is mounted on the substrate 5. Also, the battery cell 6 is connected to the charge - discharge control portion 15.

[0040] That is, charging the battery cell 6 via the input unit 9, discharging (outputting) from the battery cell 6 to the output unit 10 or the USB terminal 11 is configured to be performed by the control unit 16 via the charge / discharge control unit 15. Since the charge / discharge control by the charge / discharge control unit 15 is well-known in the art, detailed description thereof is omitted. The charge / discharge control unit 15 may be integrated with the control unit 16.

[0041] The wireless module 12 is configured to include a communication unit 13 and a wireless antenna 14. The communication unit 13 is a part for realizing a short-range wireless communication function such as Bluetooth (registered trademark), and is controlled by the control unit 16 (shown in FIG. 12). The communication unit 13 controlled by the control unit 16 outputs a transmission signal to the wireless antenna 14 at a predetermined level, and receives an input signal received by the wireless antenna 14 and transmits it to the control unit 16.

[0042] Charging the battery cell 6 via the input unit 9, discharging (outputting) from the battery cell 6 to the output unit 10 or the USB terminal 11 can be executed by the operation of the operation unit 17 connected to the control unit 16 or a wireless instruction via the wireless antenna 14. That is, the communication unit 13 can wirelessly receive an instruction from a mobile terminal (not shown) incorporating a communication module of the same standard and change the discharge (output) state from the output unit 10 or the USB terminal 11. Also, it may be configured to give a wireless charging instruction to the battery cell 6. Since these wireless operation instructions are configurations also known in the above prior art documents, etc., for the sake of avoiding complication of the description, detailed description is simplified.

[0043] The operation unit 17 is constituted by, for example, push buttons 17a, 17b, 17c, etc. in FIG. 1. The push buttons 17a, 17b, 17c are connected to the control unit 16, and the control unit 16 is configured to be able to detect the operation states of the push buttons 17a, 17b, 17c. For example, when the push button 17a is continuously pressed for several seconds, the control unit 16 detects the operation state and controls the charge and discharge control unit 15 to start discharging (output) from the output unit 10 or the USB terminal 11. After that, when the control unit 16 detects that the number of times the push button 17a is pressed has increased, the control unit 16 detects the operation state and controls the charge and discharge control unit 15 to increase the output. When the control unit 16 detects that the push button 17b has been pressed, the control unit 16 detects the operation state and controls the charge and discharge control unit 15 to decrease the output according to the number of times. When the push button 17b is continuously pressed for several seconds, the control unit 16 detects the operation state and controls the charge and discharge control unit 15 to stop the discharging (output) from the output unit 10 or the USB terminal 11. The output state from the output unit 10 or the USB terminal 11 is displayed by the first display unit 18.

[0044] When wirelessly instructing the output from the output unit 10 or the USB terminal 11, first press the push button 17c. When the control unit 16 detects that the push button 17c has been pressed, it makes the second display unit 19 light up. After that, when an output is instructed from the mobile terminal, the instruction signal is received by the control unit 16 via the wireless module 12. The control unit 16 can control the charge and discharge control unit 15 to start or stop the output from the output unit 10 or the USB terminal 11. Since these operations are also widely known in this technical field, further detailed explanations are abbreviated.

[0045] In the above configuration, the features of the battery pack 1 of the present embodiment are as follows: a main body case 2, a substrate 5 provided in the main body case 2, a battery cell 6 disposed on one side of the substrate 5, an input unit 9 for charging the battery cell 6, an output unit 10 for discharging from the battery cell 6, a USB terminal 11, and a control unit 16 for controlling the outputs from the output unit 10 and the USB terminal 11. The control unit 16 is mounted on the substrate 5. The battery cell 6 has a cylindrical outer peripheral case made of metal. On one side of the substrate 5, a wireless module 12 connected to the control unit 16 is disposed, and this wireless module 12 is configured to have a wireless antenna 14. That is, the wireless antenna 14 is disposed on the side of the battery cell 6 of the substrate 5 and is in a state separated from the surface of the main body case 2.

[0046] With the above configuration, since the wireless antenna 14 is not close to the outer surface of the main body case 2, even when the battery pack 1 is stored in a pocket together with a wireless key such as a metal key or an automobile, the occurrence of adverse effects on the wireless communication function caused by these metal keys and wireless keys can be suppressed.

[0047] Also, the positional relationship between the wireless module 12 and the battery cell 6 on one side of the substrate 5 is always in a constant state, and the communication by the wireless antenna 14 is sufficiently stabilized by using the reflection action from the metal part of the battery cell 6 disposed together with the wireless module 12 on one side of the substrate 5.

[0048] FIG. 11 schematically shows that state. The radio waves (indicated by a plurality of arrows) radiated from the wireless antenna 14 of the wireless module 12 are reflected by the cylindrical surface because the outer peripheral case of the battery cell 6 is made of metal and is cylindrical, and the radio waves are emitted over a wide range.

[0049] Conversely, the instruction radio waves transmitted from the mobile terminal are also reflected by the cylindrical surface because the outer peripheral case of the battery cell 6 is made of metal and is cylindrical, and stably reach the wireless antenna 14 through a path opposite to the arrow in FIG. 11.

[0050] Therefore, even when the battery pack 1 is stored in a pocket together with a wireless key such as a metal key or an automobile, it is possible to suppress the occurrence of an adverse effect on the wireless communication function due to these metal keys and wireless keys. As a result, the instruction operation of the battery pack 1 from the mobile terminal is also stabilized.

[0051] Further, in the present embodiment, although the output unit 10 exists near the wireless antenna 14, since the outer peripheral case of the battery cell 6 is made of metal and is cylindrical, the noise component of the output unit 10 is reflected by the cylindrical surface, so that the wireless communication by the wireless antenna 14 is stably performed without being affected by the output unit 10.

[0052] Note that the outer peripheral case of the battery cell 6 is preferably made of metal and is cylindrical, but the outer peripheral case of the battery cell 6 may be made of metal and is rectangular cylindrical, and in this case, the same effect can be exhibited as in the case of the cylindrical shape.

[0053] FIG. 12 shows an electronic device unit S. The electronic device unit S includes a battery pack 1 and a fan motor M (an example of an electronic device) that receives power supply from the battery pack 1. The fan motor M is a motor that rotationally drives a fan for blowing outside air inside the cooling suit. The electronic device may be a device other than the fan motor M, and examples thereof include a communication device, a heater, and a display device. (Embodiment 2) FIG. 13 shows Embodiment 2 of the present invention, in which a wireless module 12 is arranged on the outer peripheral portion of the substrate 5 on the side of the functional component housing portion R2 on one side of the substrate 5, on the side opposite to the input portion 9 of the USB terminal 11 (the output portion 10 side). Note that the wireless module 12 may be arranged on the side opposite to the output portion 10 of the USB terminal 11 (the input portion 9 side).

[0054] Also in these forms, since the outer peripheral case 6a of the battery cell 6 is made of metal and is cylindrical, the radio wave is reflected by the cylindrical surface, so that the wireless communication by the wireless antenna 14 is stably performed without being affected by the output unit 10.

[0055] Also, in the above two embodiments, the battery cell 6 and the wireless module 12 are provided on one side of a single substrate 5. However, the battery cell 6 can be arranged on one substrate (the first substrate) 5, and another substrate (the second substrate), not shown, can be provided orthogonally to the first substrate 5 on the side of the wireless module 12 of the substrate 5 in FIG. 11, and the wireless module 12 can be arranged on the surface of the orthogonal second substrate facing the battery cell 6. In that case, by setting the width of the second substrate to be approximately the same as the diameter of the battery cell 6, it is possible to prevent the main body case 2 from becoming large.

[0056] Also, regarding the radio wave emission and radio wave incidence from the radio antenna 14 of the wireless module 12 arranged on the second substrate, since the outer peripheral case 6a of the battery cell 6 is made of metal and is cylindrical, radio wave communication by the radio antenna 14 can be stably performed by reflection on the cylindrical surface. The electronic device unit S can also be configured using the battery pack 1 of Embodiment 2.

[0057] Also, the input unit 9 and the output unit 10 may be integrated. In this case, a single connector member can serve as both the input unit 9 and the output unit 10.

[0058] The above-described embodiments are merely illustrative in every respect and should not be construed in a limiting sense. Furthermore, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

Industrial Applicability

[0059] As described above, the present invention can be used, for example, in a cooling suit with a fan or a warming suit with a heater.

Explanation of Reference Numerals

[0060] 1 Battery pack 2 Main body case 5 Substrate (first substrate) 6 Battery cell 6a Outer peripheral case 7 Connection terminal 9 Input unit 10 Output section 11 USB terminal 12 Wireless module 13 Communication section 14 Wireless antenna 16 Control section M Fan motor (electronic device) S Electronic device unit

Claims

1. A battery pack comprising a main body case, a first substrate provided within the main body case, a battery cell provided within the main body case and disposed on one side of the first substrate, an input section for charging the battery cell, an output section for discharging from the battery cell, and a control section for controlling the output from the output section, wherein the control section is mounted on the first substrate, wherein the battery cell has a cylindrical outer peripheral case, wherein a wireless module connected to the control section is disposed on one side of the first substrate, and the wireless module has a wireless antenna. A battery pack.

2. The battery pack according to claim 1, wherein the outer peripheral case is made of metal and is cylindrical.

3. The battery pack according to claim 1 or 2, wherein the input section, the output section, and the wireless module are disposed on one side of the first substrate.

4. On one side of the first substrate within the main body case, a battery cell accommodating section for accommodating a plurality of the battery cells arranged in a predetermined direction, and a functional component accommodating section for accommodating the input section, the output section, and the wireless module outside the battery cell accommodating section are provided. The battery pack according to claim 3.

5. The battery pack according to claim 4, wherein the input section, the output section, and the wireless module provided on the outer peripheral portion of the first substrate are disposed in the functional component accommodating section.

6. The battery pack according to claim 5, wherein the wireless module is disposed on the outer peripheral portion of the first substrate in the functional component accommodating section, on the opposite side of the output section across the input section or on the opposite side of the input section across the output section in the plane direction of the first substrate.

7. The battery pack according to claim 6, wherein a USB (Universal Serial Bus) terminal is disposed between the input section and the output section on the outer peripheral portion of the first substrate in the functional component accommodating section, and the wireless module is disposed on the opposite side of the USB terminal across the input section or on the opposite side of the USB terminal across the output section in the plane direction of the first substrate.

8. A battery pack comprising a main body case, a first substrate provided within the main body case, a battery cell provided within the main body case and disposed on one side of the first substrate, an input section for charging the battery cell, an output section for discharging from the battery cell, and a control section for controlling the output from the output section. The battery cell has a cylindrical outer peripheral case. A second substrate different from the first substrate is disposed on one side of the first substrate within the main body case. A wireless module connected to the control section is disposed on a surface of the second substrate facing the battery cell. The wireless module has a wireless antenna. Battery pack.

9. The battery pack according to claim 8, wherein the outer peripheral case is made of metal and is cylindrical.

10. An electronic device unit comprising the battery pack according to any one of claims 1 to 9 and an electronic device that receives power supply from the battery pack.

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