JP2008181855A - Cylindrical battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To arrange a circuit board to be mounted at a regular position by arranging a cathode terminal at an accurate position so as not to have a position gap while using a cylindrical battery instead of a standard battery. <P>SOLUTION: The cylindrical battery fixes a base board assembly 20 on an end of an element battery 10 at its projecting electrode 14 side. The element battery 10 provides a projecting electrode 14 on a sealing plate 13 by blocking an opening of an exterior can 12 with the sealing plate 13. The base board assembly 20 has the circuit board 21 for mounting a data processing circuit, a communication terminal 22, and a formed isolator 23 in which the communication terminal 22 is arranged at a regular position. The base board assembly 20 has a penetrating hole 26 for penetrating the projecting electrode 14 of the element battery 10 at its central section, and makes the annular communication terminal 22 fix on the upper surface of the base board assembly 20 in the periphery of the penetrating hole 26. The projecting electrode 14 of the element battery 10 has a height projected from the upper surface of the base board assembly 20. The cylindrical battery, in which the base board assembly 20 is fixed on the element battery 10, has an external shape of a standard battery as the whole external size. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cylindrical battery whose outer shape is a standard-sized cylinder, and more particularly to a cylindrical battery incorporating a data processing circuit. The present invention also relates to a cylindrical battery that incorporates a circuit board while having a small battery outer shape.

A battery pack for mounting an electronic circuit has been developed. (See Patent Documents 1 to 3)
These battery packs can be conveniently used by realizing various functions in an electronic circuit. The battery pack of Patent Document 1 uses an electronic circuit as a protection circuit that protects charging and discharging of the battery. The battery pack can be used while protecting the battery by controlling the charge / discharge of the battery with a protection circuit. Furthermore, this battery pack accommodates a cylindrical battery in an outer case made of a metal plate. The exterior case has a circuit board disposed in the opening, and an electrode fixed to the circuit board is exposed to the outside from the opening of the exterior case. The circuit board is connected to the positive and negative electrodes of a cylindrical battery built in the outer case.

Furthermore, patent document 2 describes the housing for electronic circuits set to a battery. This patent document describes that an electronic circuit mounted in a housing detects and insulates and insulates the charge / discharge cycle of a battery and detects overheating, reverse polarity, short circuit, overvoltage, overcharge, overdischarge or battery life. . Therefore, the battery pack on which the electronic circuit is mounted transmits information such as the battery life to a device that uses the battery pack as a power source.
Patent Document 3 discloses a structure that outputs a signal from a protection element with a battery size of AA size.
Japanese Patent Laid-Open No. 9-63552 Special table 2003-516604 gazette JP 2004-265722 A

  In the battery pack of Patent Document 1, a cylindrical battery is housed in an outer case made of a metal case, and further, a circuit board having a positive electrode and a negative electrode provided in the opening of the outer case is mounted. Larger than AA batteries etc. For this reason, in the state which mounts a circuit board, it cannot use instead of an AA battery, and it is necessary to provide a battery storage part for exclusive use. An electric device provided with a dedicated battery compartment cannot use a generally available AA battery instead of the battery pack when the battery pack cannot be used. For this reason, the user always needs to pay attention to the remaining capacity of the battery pack because the battery pack is always charged and used. In addition, the overall structure is complicated and the manufacturing cost is increased. A double metal case consisting of an AA battery outer can and an outer case for storing AA batteries is required, and the opening of the metal case, which is the outer case, is closed with an insulating plastic lid. This is because the positive and negative electrodes are fixed to the plastic lid, the positive and negative electrodes are connected to the circuit board, the circuit board is disposed inside the plastic lid, and this is connected to the battery.

  Moreover, since the housing for electronic circuits of patent document 2 is set and used for batteries, such as an AA battery, in the state which sets this, external size becomes larger than an AA battery standard, for example. For this reason, the battery of this structure cannot be used in place of the AA battery as in Patent Document 1, and it is necessary to provide a dedicated battery storage portion. Further, since the battery having this structure is also used by connecting a housing to a standard battery such as an AA battery, the overall structure becomes complicated and it is difficult to firmly fix the battery to the standard battery. In particular, since the positive terminal serving as the output terminal is fixed to the housing, the positive terminal is fixed to the standard battery via the housing. This structure requires the positive terminal to be firmly fixed to the housing and the housing to be firmly fixed to the standard battery in order to fix the positive terminal in a strong and tough structure. It takes time to fix. In addition, since the positive terminal is connected to the standard battery via the housing, the positive terminal is fixed to the correct position of the housing in order to prevent displacement of the positive terminal, and further, the housing is connected to the correct position of the standard battery. It is necessary to fix to. For this reason, high accuracy is required for fixing the positive electrode terminal to the housing, and high accuracy is also required for the portion connecting the housing to the standard battery. This is because the displacement of the positive terminal causes a contact failure in a state where the positive terminal is set in an electric device. The complicated structure and high processing accuracy required increase the manufacturing cost of the housing for mounting the electronic circuit, and make it difficult to mass-produce at low cost.

  The present invention has been developed for the purpose of solving this drawback. An important object of the present invention is that, in addition to being able to be used in place of a standard size battery, the positive electrode terminal can be placed in a precise position without being misaligned, while having a simple structure. An object of the present invention is to provide a cylindrical battery in which a circuit board to be mounted can be arranged at a fixed position.

In order to achieve the above-described object, the cylindrical battery of the present invention has the following configuration.
In the cylindrical battery, the substrate assembly 20 is fixed to the end of the unit cell 10 on the convex electrode 14 side. The unit cell 10 has a structure in which an electrode 19 and an electrolytic solution are placed in an outer casing 11 having a sealed structure. The outer case 11 is formed by caulking the opening of the cylindrical outer can 12 and closing it with the sealing plate 13, and the outer peripheral edge of the sealing plate 13 is provided with crimping ridges 15 by caulking. The sealing plate 13 is provided with a convex electrode 14 at the center. The unit cell 10 has a convex electrode 14 as a positive electrode and an outer can 12 as a negative electrode. The board assembly 20 includes a circuit board 21 on which a data processing circuit is mounted, a communication terminal 22 connected to the data processing circuit of the circuit board 21, and the circuit board 21 is insulated to place the communication terminal 22 in a fixed position. Forming insulator 23. The substrate assembly 20 has a through-hole 26 through which the convex electrode 14 of the unit cell 10 is inserted in the center, and a ring-shaped communication terminal 22 is fixed to the upper surface of the substrate assembly 20 around the through-hole 26. ing. Further, a connection metal plate 17 having a connection tab 17 </ b> A connected to the circuit board 21 is fixed to the surface of the sealing plate 13. In the cylindrical battery, the convex electrode 14 of the unit cell 10 is inserted into the through hole 26 of the substrate assembly 20 to fix the substrate assembly 20 to the end of the unit cell 10 on the convex electrode 14 side, and to connect the metal plate. 17 connection tabs 17 </ b> A are connected to the circuit board 21, and the circuit board 21 is connected to the convex electrode 14. Further, the cylindrical battery has a height at which the convex electrode 14 of the unit cell 10 protrudes from the upper surface of the substrate assembly 20 to which the unit cell 10 is fixed. Is the outer shape of the standard battery.

  The cylindrical battery according to claim 2 of the present invention has the overall size of the AA battery standard in addition to the configuration of claim 1.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the cylindrical battery includes a data processing circuit mounted on a circuit board connected to the positive electrode and the negative electrode of the unit cell 10, Power is being supplied.

  According to a fourth aspect of the present invention, in addition to the structure of the first or second aspect, the cylindrical battery includes a first molded insulator in which the molded insulator 23 is disposed between the circuit board 21 and the communication terminal 22. 24 and a second molded insulator 25 that is connected to the first molded insulator 24 and covers the circuit board 21 and the outer peripheral portion of the communication terminal 22.

  According to a fifth aspect of the present invention, in addition to the structure of the first or second aspect, the first molded insulator 24 has a ring-shaped concave portion 24b into which the communication terminal 22 is fitted. The communication terminal 22 is fitted to 24b.

  In addition to the structure of claim 1 or 2, the cylindrical battery of claim 6 of the present invention is provided with a ring groove 16 between the convex electrode 14 and the caulking ridge 15, and the first molded insulator 24. Includes a support leg 24a that is inserted into a positioning hole 21D provided in the circuit board 21. The support leg 24a passes through the circuit board 21 and is disposed in the ring groove 16, so that the first molded insulator 24 is provided. Is fixed to a fixed position of the unit cell 10.

  In the cylindrical battery according to claim 7 of the present invention, in addition to the configuration of claim 1 or 2, the circuit board 21 has notches 21A and 21B on the outer periphery, and the circuit board 21 is provided at the notches 21A and 21B. Is connected to the positive electrode and the negative electrode of the unit cell 10.

  In addition to the structure of claim 1 or 2, the cylindrical battery of claim 8 of the present invention fixes a connection metal plate 17 having a connection tab 17A connected to the circuit board 21 on the outer periphery to the surface of the sealing plate 13, The connection tab 17A of the connection metal plate 17 is connected to the circuit board 21 at the notch 21A of the circuit board 21, and the circuit board 21 is connected to the convex electrode 14.

  According to a ninth aspect of the present invention, in addition to the configuration of the first or second aspect, the cylindrical battery includes a data processing circuit mounted on the circuit board 21, the remaining battery capacity, the degree of deterioration of the battery, and the memory of the battery. One or more pieces of information of the effect are calculated and output from the communication terminal 22.

  Furthermore, in the cylindrical battery according to claim 10 of the present invention, the substrate assemblies 20 and 40 are fixed to the end portions of the unit cells 10 and 30 on the convex electrode 14 and 34 side. The unit cells 10 and 30 have a structure in which the electrodes 19 and 39 and the electrolytic solution are put in the outer casings 11 and 31 having a sealed structure. The outer cases 11 and 31 are closed by sealing plates 13 and 33 by crimping the openings of the cylindrical outer cans 12 and 32. The sealing plates 13 and 33 are provided with convex electrodes 14 and 34 at the center. The unit cells 10 and 30 have the convex electrodes 14 and 34 as positive electrodes and the outer cans 12 and 32 as negative electrodes. Furthermore, the board assemblies 20 and 40 include circuit boards 21 and 31 on which electronic elements are mounted, and molded insulators 23 and 43 that insulate the circuit boards 21 and 31. Further, a connection metal plate 17 having a connection tab 17 </ b> A connected to the circuit board 21 is fixed to the surface of the sealing plate 13. In the cylindrical battery, the substrate assemblies 20 and 40 are fixed to the end portions of the unit cells 10 and 30 on the convex electrode 14 and 34 side, and the connection tabs 17A of the connection metal plate 17 are connected to the circuit board 21. 21 is connected to the convex electrode 14. Further, the cylindrical battery has a height at which the convex electrodes 14 and 34 of the unit cells 10 and 30 protrude from the upper surfaces of the substrate assemblies 20 and 40 to be fixed, and the overall outer size is set as the outer shape of the standard battery. Yes.

  Further, in the cylindrical battery according to claim 11 of the present invention, the outer cases 11 and 31 are provided with crimping ridges 15 and 35 by caulking on the outer peripheral edges of the sealing plates 13 and 33, and the circuit boards 21 and 41 are provided. The negative terminals 27 and 47 to be connected are connected to the crimping ridges 15 and 35.

  Furthermore, in the cylindrical battery according to claim 12 of the present invention, a data processing circuit for calculating the remaining capacity of the battery is mounted on the circuit board 41 of the board assembly 40. Furthermore, in the cylindrical battery according to claim 13 of the present invention, the data processing circuit that is mounted on the circuit board 41 and calculates the remaining capacity is operated by the power supplied from the unit cell 30, and the data for calculating the remaining capacity is obtained. The unit cell 30 serving as a power source for operating the processing circuit is the same as the unit cell 30 for which the remaining capacity is calculated. Furthermore, in the cylindrical battery according to claim 14 of the present invention, the board assembly 40 includes a display unit 44 for remaining capacity, and a switch 45 for displaying the remaining capacity.

  Since the cylindrical battery according to the first aspect of the present invention has the outer size of the standard battery, the cylindrical battery can be used in place of the standard battery in the battery housing portion of an electric device in which the standard battery is set. Since the convex electrode fixed to the sealing plate is projected to the outside and used for the positive electrode terminal while having a simple structure in which the circuit board and the communication terminal are arranged on the outer peripheral portion of the convex electrode provided in The positive electrode terminal is arranged so as not to be firmly displaced at an accurate position, and the circuit board to be mounted with the convex electrode fixed to the sealing plate can be arranged at a fixed position. In this cylindrical battery, a circuit board for mounting a data processing circuit is arranged on the outer periphery of the convex electrode, and a through-hole through which the convex electrode is inserted is provided in the circuit board. A communication terminal made of a ring-shaped metal plate is provided so as to pass through the convex electrode and be laminated in an insulating state on the circuit board, and the communication terminal is connected to the caulking convexity outside the convex electrode. This is because it is arranged inside the strip and at a position lower than the top surface of the convex electrode in a posture parallel to the sealing plate, and has a unique structure that is insulated from the convex electrode and the outer can.

  Furthermore, this cylindrical battery fixes the connection metal plate provided with the connection tab to the surface of the sealing plate, connects the connection tab of the connection metal plate to the circuit board, and connects the convex electrode to the circuit board. Therefore, the sealing plate as the positive electrode can be easily and reliably electrically connected to the circuit board.

  Furthermore, since the cylindrical battery according to claim 2 of the present invention uses the AA battery standard for the outer size, it is convenient to replace the AA battery in the battery storage portion of the electric device in which a highly versatile AA battery is set. Can be used for

  Furthermore, the cylindrical battery according to claim 3 of the present invention connects the data processing circuit mounted on the circuit board to the positive electrode and the negative electrode of the unit cell and supplies power from the unit cell. Even in a state where it is not mounted, the battery state can be managed by operating the data processing circuit.

  Furthermore, the cylindrical battery according to claim 4 of the present invention is formed by connecting a molded insulator to a first molded insulator disposed between the circuit board and the communication terminal, and the first molded insulator. Since the circuit board and the second molded insulator covering the outer periphery of the communication terminal are configured, the first molded insulator is disposed between the circuit board and the communication terminal to communicate with the circuit board. The terminal can be disposed at a fixed position while being insulated from the terminal, and the outer periphery of the circuit board and the communication terminal can be insulated by the second molded insulator.

  Furthermore, in the cylindrical battery according to claim 5 of the present invention, the first molded insulator has a ring-shaped concave portion into which the communication terminal is fitted, and the communication terminal is fitted into the concave portion. With the molded insulator, the communication terminal can be insulated from the circuit board and placed in place.

  Furthermore, in the cylindrical battery according to claim 6 of the present invention, a ring groove is provided between the convex electrode and the crimping ridge, and an insulating ring is disposed in the ring groove. The circuit board can be insulated by placing it at a fixed position of the AA battery.

  In the cylindrical battery according to claim 7 of the present invention, a cutout is provided on the outer peripheral edge of the circuit board, and the circuit board is connected to the positive electrode convex electrode and the negative outer can at the cutout. This structure has a feature that the circuit board and the AA battery can be easily electrically connected by arranging the circuit board at a fixed position of the sealing plate.

  Furthermore, in the cylindrical battery according to claim 8 of the present invention, a connection metal plate having a connection tab connected to the circuit board is fixed to the surface of the sealing plate, and the connection tab of the connection metal plate is connected to the circuit board. The convex electrode is connected to the circuit board by being disposed in the notch and connected to the circuit board. With this structure, the sealing plate as the positive electrode can be electrically connected to the circuit board easily and reliably.

  A cylindrical battery according to claim 9 of the present invention is a data processing circuit mounted on a circuit board, and calculates one or more information of the remaining capacity of the battery, the degree of deterioration of the battery, and the memory effect of the battery. And output from the communication terminal for convenient use.

Furthermore, the cylindrical battery according to claim 10 of the present invention fixes the substrate assembly to the end of the unit cell on the convex electrode side, and projects the convex electrode of the unit cell from the upper surface of the substrate assembly to be fixed. Since the height is set, there is an advantage that the cylindrical battery can be made multifunctional by an electronic element mounted on the substrate assembly arranged at the end on the convex electrode side. In particular, this cylindrical battery fixes the substrate assembly to the end of the unit cell on the convex electrode side in a state where the convex electrode protrudes from the upper surface of the substrate assembly, so that the space that can be formed around the convex electrode is effective. However, it can be conveniently used by arranging the board assembly ideally and using the functions of the electronic elements mounted on the board assembly.
In addition, the unit cell itself can adopt the sealed structure of the unit cell itself used in the prior art only by protruding the protruding electrode, so that it has a simple structure and can be easily manufactured, and at the same time, the electrolytic solution High reliability such as leakage prevention and safety valve measures when the pressure inside the battery rises.
Furthermore, the connection metal plate provided with the connection tab is fixed to the surface of the sealing plate, the connection tab of the connection metal plate is connected to the circuit board, and the convex electrode is connected to the circuit board. The sealing plate can be easily and reliably electrically connected to the circuit board.

  Further, in the cylindrical battery according to claim 11 of the present invention, the outer case is provided with a crimping ridge by caulking on the outer peripheral edge of the sealing plate, and the negative terminal connected to the circuit board is connected to the crimping ridge. ing. With this structure, the outer can as a negative electrode can be electrically connected to the circuit board easily and reliably.

  Further, in the cylindrical battery according to the twelfth aspect of the present invention, since the data processing circuit for calculating the remaining capacity of the battery is mounted on the circuit board of the board assembly, the entire outer shape is displayed while displaying the remaining capacity of the battery. The size can be used in the same way as a standard battery as the standard battery.

  Furthermore, a cylindrical battery according to claim 13 of the present invention is mounted on a circuit board of a board assembly, and a unit battery serving as a power source for operating a data processing circuit for calculating a remaining capacity and a battery whose remaining capacity is determined. Are the same, so that the remaining capacity of the battery can be confirmed with a simple structure.

  In the cylindrical battery according to the fourteenth aspect of the present invention, the board assembly includes a display unit for the remaining capacity and a switch for displaying the remaining capacity, so that the switch is operated when necessary. The remaining battery capacity can be displayed.

  Embodiments of the present invention will be described below with reference to the drawings. However, the following examples illustrate AA batteries for embodying the technical idea of the present invention, and the present invention does not specify AA batteries as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The cylindrical battery shown in FIGS. 1 to 4 is a cylindrical AA battery whose outer size is an AA battery standard. Hereinafter, as an example of the present invention, a cylindrical battery which is a cylindrical AA battery will be described in detail. However, the present invention does not specify a cylindrical battery as an AA battery. The present invention is a cylindrical battery having a standard-shaped outer shape, and the shape thereof may be a cylindrical single battery, a single battery, a single battery, or a square battery. You can also.

  In the cylindrical battery shown in FIGS. 1 to 4, the substrate assembly 20 is fixed to the end of the unit cell 10 on the convex electrode 14 side. As shown in FIGS. 4 and 5, the unit cell 10 has an electrode 19 and an electrolytic solution placed in a sealed outer case 11. The outer case 11 includes an outer can 12 manufactured by pressing a metal plate into a cylindrical shape, and a metal plate sealing plate 13 that closes an opening of the outer can 12. The outer can 12 is crimped along the outer peripheral edge of the sealing plate 13, and the opening is sealed with the sealing plate 13. On the outer peripheral edge of the sealing plate 13, a crimping ridge 15 by caulking is provided. The sealing plate 13 and the outer can 12 are crimped through an insulating material 18, and the sealing plate 13 is connected to the positive electrode and the outer can 12 is connected to the negative electrode, as is well known in the art. The sealing plate 13 is provided with a convex electrode 14 at the center, and a ring groove 16 is provided between the convex electrode 14 and the caulking ridge 15.

  In the cylindrical battery of the present invention, the outer size is the same as that of the standard battery in a state where the substrate assembly 20 is fixed to the convex electrode 14 side of the unit cell 10. Accordingly, the unit cell 10 is made smaller than the size of the substrate assembly 20 as compared with a normal standard battery in which the substrate assembly 20 is not fixed. Since the board assembly 20 is fixed to the convex electrode 14 side of the unit cell 10, this portion is made small, that is, the length of the outer can 12 is slightly shortened. However, in the cylindrical battery of the present invention, since the convex electrode 14 of the unit cell 10 is projected from the substrate assembly 20 and used as the positive electrode of the output terminal, the leading end of the convex electrode 14 to the bottom of the outer can 12 is used. The dimensions are those of a standard battery that is not fixed to the board assembly. For this reason, the cylindrical battery of this invention makes the height which the convex part electrode 14 of the unit cell 10 protrudes from the sealing board 13 higher than a general standard battery.

  The cylindrical battery shown in the drawing has an outer size of an AA battery standard in a state in which the substrate assembly 20 is fixed to the unit cell 10. In other words, the outer shape of the substrate assembly 20 is manufactured in a shape in which the outer shape of the cylindrical battery becomes the AA battery standard in a state where the outer shape of the substrate assembly 20 is fixed to the unit cell 10. The board assembly 20 includes a circuit board 21 on which a data processing circuit is mounted, a communication terminal 22 for transmitting a signal output from the data processing circuit to a device, and the circuit board 21 is insulated to place the communication terminal 22 at a fixed position. And a molded insulator 23 to be disposed on the surface. The illustrated substrate assembly 20 includes a molded insulator 23 connected to a first molded insulator 24 disposed between the circuit board 21 and the communication terminal 22 and the first molded insulator 24. The circuit board 21 and the second molded insulator 25 that covers the outer periphery of the communication terminal 22 are separated.

  The cylindrical battery shown in the figure has the substrate assembly 20 fixed to the end of the unit cell 10 on the projecting electrode 14 side, and the projecting electrode 14 of the unit cell 10 protrudes from the substrate assembly 20 to output the positive electrode. Use as For this reason, the substrate assembly 20 is provided with a through-hole 26 through which the convex electrode 14 of the unit cell 10 is inserted at the center. The convex electrode 14 is inserted into the through hole 26, and the substrate assembly 20 is arranged at a fixed position at the end of the unit cell 10.

  However, the present invention does not specify the shape of the substrate assembly as a ring shape having a through hole through which the convex electrode of the unit cell is inserted. Although not shown, the substrate assembly can be formed in various shapes that can be disposed on the end surface of the unit cell on the convex electrode side. For example, when the unit cell is a cylindrical battery, the cylindrical battery can be formed into a C-shaped or eel shape having an arcuate outer shape along the outer periphery of the cylindrical battery. In addition, when the unit cell is a rectangular battery, the shape of the substrate assembly can be a rectangular parallelepiped shape along the outer periphery of the rectangular battery. These substrate assemblies may be arranged only in a part around the convex electrode without being arranged along the entire circumference of the convex electrode.

  Further, the board assembly 20 has a circular ring-shaped communication terminal 22 fixed to the upper surface of the board assembly 20 around the through hole 26. In the board assembly 20, the first molded insulator 24 is laminated on the surface of the circuit board 21, and the communication terminal 22 is fixed on the first molded insulator 24. A through hole 26 provided through the board assembly 20 is provided through the circuit board 21, the molded insulator 23, and the communication terminal 22. The circuit board 21 shown in FIG. 6 has an overall shape of a circular shape in a plan view, and a through hole 26 of the board assembly 20 is provided at the center. Further, the circuit board 21 in this figure is mounted with an ASIC (Application Specific Integrated Circuit) 28 of a COB (CHIP ON BOAD) mounting method and an external component 29 that realize a data processing circuit. The data processing circuit calculates the remaining capacity of the battery, calculates the deterioration degree of the battery, further detects the memory effect of the battery, and installs the calculation result and the detection result from the communication terminal 22 to the cylindrical battery. Output to.

  A data processing circuit for calculating the remaining capacity of the battery calculates the remaining capacity by integrating the current for charging and discharging the battery. That is, the data processing circuit for calculating the remaining capacity calculates the remaining capacity by adding up the charging current and adding it to the remaining capacity, and adding up the discharging current and subtracting it from the remaining capacity. The charge / discharge current of the battery used for calculating the remaining capacity is detected by an electric device (not shown) to which the battery is mounted and transmitted from the communication terminal 22 to the data processing circuit, or a current detection circuit is installed in the data processing circuit. Built-in to detect charge / discharge current.

  A data processing circuit for detecting the degree of deterioration of the battery detects the charge / discharge cycle of the battery and calculates the degree of deterioration, or calculates the degree of deterioration from the total capacity of the charge capacity and the discharge capacity. Since the battery deteriorates as the number of charge / discharge cycles increases, the degree of deterioration can be detected by counting the charge / discharge cycles. Further, since the battery deteriorates as the amount of charge and the amount of discharge increase, the degree of deterioration can be calculated from the total capacity of the charge capacity and the discharge capacity.

  Furthermore, the data processing circuit for detecting the memory effect of the battery detects the memory effect from the charge / discharge state of the battery. When a nickel hydride battery or a nickel cadmium battery is repeatedly charged and discharged shallowly, the capacity that can be substantially charged and discharged is reduced by the memory effect. Therefore, it can be detected that the shallow charge / discharge is repeated, and that the substantial capacity is reduced by the memory effect. When the effective capacity of the battery decreases due to the memory effect, the data processing circuit outputs a signal indicating this from the communication terminal 22 to the electrical device. When a signal indicating the memory effect of the battery is input, the electrical device discharges the battery deeply and then fully charges to eliminate the memory effect.

  The above data processing circuit detects the remaining capacity of the battery, the degree of deterioration, and the memory effect, but the cylindrical battery of the present invention does not necessarily need to detect all of these, and detects any one of them, Alternatively, the two can be detected, and further, characteristics other than the remaining capacity, the degree of deterioration, and the memory effect, for example, the actual capacity depending on the temperature of the battery can be detected and output to the electric device.

  The data processing circuit of the circuit board 21 shown in the figure has a structure that operates with electric power supplied from the unit cell 10. Therefore, the circuit board 21 is connected to the positive electrode and the negative electrode of the unit cell 10. The circuit board 21 shown in the figure is provided with notches 21 </ b> A and 21 </ b> B for connection to the positive electrode and the negative electrode of the unit cell 10. The circuit board 21 shown in the figure has two notches 21A and 21B on the outer periphery. One notch 21A is for the positive electrode and the other notch 21B is for the negative electrode.

  The circuit board 21 shown in the figure is connected to the positive electrode of the unit cell 10 via the connection metal plate 17. The connection metal plate 17 is a metal plate provided with connection tabs 17 </ b> A connected to the circuit board 21 protruding from the outer periphery, and is fixed to the upper surface of the sealing plate 13. In the unit cell 10 shown in FIGS. 4 and 5, a connection metal plate 17 fixed to the upper surface of the sealing plate 13 is electrically connected to the convex electrode 14 and provided as a part of the convex electrode. The convex electrode 14 in these figures has a stepped portion 14 </ b> A at the lower portion in a two-stage aperture shape with the outer diameter of the lower portion increased. The convex electrode 14 can be placed at a fixed position by placing the circuit board 21 on the stepped portion 14A and supporting the circuit board 21 from the lower surface with the convex electrode 14. The circuit board 21 supported by the stepped portion 14A has the inner diameter of the through hole 26 smaller than the outer diameter of the stepped portion 14A and larger than the outer diameter of the convex electrode 14 above the stepped portion 14A. The connecting metal plate 17 is spot welded and fixed to the sealing plate 13. The connection metal plate 17 is bent at the connection tab 17A upward and disposed in the notch 21A of the circuit board 21, and is connected to the circuit board 21 by soldering, spot welding, wire bonding, or the like. The connection metal plate 17 has a ring shape. However, the connection metal plate 17 may have a shape other than the ring shape as long as it can transmit power with less power loss than the sealing plate 13.

  Furthermore, the circuit board 21 is connected to the negative electrode of the unit cell 10 through the negative electrode terminal 27 as shown in FIGS. The circuit board 21 fixes a negative electrode terminal 27 connected to the outer can 12 that is a negative electrode of the unit cell 10. The negative electrode terminal 27 is a metal plate, is disposed so as to be positioned in the cutout portion 21B of the circuit board 21, and is connected to the circuit board 21 by a method such as soldering, spot welding, or wire bonding. The negative electrode terminal 27 disposed in the notch 21B is fixed to the crimping ridge 15 of the outer can 12 by a method such as spot welding.

  The above circuit board 21 is supplied with electric power from the unit cell 10, but the cylindrical battery of the present invention does not necessarily have a structure for supplying electric power from the unit cell to the circuit board. The circuit board can also supply power from the communication terminal. In this cylindrical battery, for example, the output side of the circuit board is connected to the negative electrode of the battery, but is connected to the communication terminal without being connected to the positive electrode of the battery. The cylindrical battery is supplied with electric power from a communication terminal connected to an output terminal of the external electronic device while being connected to an external electronic device (for example, a charger). In general, the cylindrical battery can be configured to operate the circuit by supplying power only in a state where the external electronic device is connected without operating the circuit. This data processing circuit can be, for example, a circuit that stores information on various batteries provided from an external electronic device. In this circuit, the battery capacity at the time of full charge, the number of times of charging, a refresh request signal indicating the necessity of discharging for eliminating the memory effect, a life determination signal indicating the life, and the like are stored as battery information.

  As shown in FIG. 6, the circuit board 21 is provided with two communication terminal holes 21 </ b> C for connecting the communication terminals 22 at positions facing the through holes 26. The communication terminal hole 21C has a slit shape through which the two solder terminals 22A of the communication terminal 22 shown in FIG. 7 can be inserted. The circuit board 21 is provided with a conduction portion (not shown) for soldering the solder terminal 22A of the communication terminal 22 inserted through the slit. The solder terminal 22A inserted into the communication terminal hole 21C is connected to the circuit board 21 by soldering. Further, the circuit board 21 is provided with positioning holes 21D through which the support legs 24a of the first molded insulator 24 shown in FIGS. 8 and 9 are inserted. The positioning hole 21D has an inner diameter that is slightly larger than the outer diameter of the support leg 24a. The support leg 24a is inserted therethrough, and the circuit board 21 and the first molded insulator 24 are connected to a fixed position.

  As shown in FIG. 7, the communication terminal 22 is formed by cutting a metal plate into a circular ring shape with a predetermined width in a plan view and providing a pair of solder terminals 22 </ b> A at opposing positions. The solder terminal 22A is bent downward, and the tip is inserted into the communication terminal hole 21C of the circuit board 21 and soldered to the circuit board 21. The pair of solder terminals 22 </ b> A have the same height, and the communication terminals 22 are separated from the circuit board 21 and fixed in parallel with the circuit board 21. The distance between the communication terminal 22 and the circuit board 21 can be adjusted by the length of the solder terminal 22A. The distance between the communication terminal 22 and the circuit board 21 can be reduced by increasing the length of the solder terminal 22 </ b> A and the distance between the communication terminal 22 and the circuit board 21. The ring-shaped communication terminal 22 has an inner diameter larger than the outer diameter of the convex electrode 14 so as not to contact the convex electrode 14. Further, the outer diameter of the communication terminal 22 is made smaller than the outer diameter of the unit cell 10, and the outer periphery is insulated by the second molded insulator 25.

  The first molded insulator 24 and the second molded insulator 25 are manufactured by molding an insulating material such as plastic. The first molded insulator 24 is between the circuit board 21 and the communication terminal 22 and insulates the communication terminal 22 from the circuit board 21. The second molded insulator 25 covers the outer peripheral portion of the substrate assembly 20.

  FIGS. 8 and 9 are perspective views of the first molded insulator 24 as viewed from above and below. The first molded insulator 24 shown in these drawings has a disk shape as a whole, and plastic is molded into a shape in which a plurality of support legs 24a protrude from the lower surface. A through-hole 26 through which the convex electrode 14 of the unit cell 10 is inserted is provided at the center so that the outer diameter is smaller than the outer diameter of the unit cell 10. The through hole 26 has a slightly larger inner diameter than the outer diameter of the convex electrode 14 so that the convex electrode 14 can be inserted in a narrow gap. Further, the first molded insulator 24 is provided with a ring-shaped concave portion 24b having a circular shape in plan view, into which the communication terminal 22 is fitted, along the outer peripheral edge of the upper surface. The communication terminal 22 is fitted in the recess 24b and is disposed at a fixed position. The first molded insulator 24 shown in the figure is provided with three sets of support legs 24a. Each support leg 24 a is guided by the ring groove 16 of the unit cell 10 in a state where the substrate assembly 20 is fixed to the unit cell 10, and connects the substrate assembly 20 to a fixed position of the unit cell 10. Accordingly, the support legs 24 a are provided at a length and a position where the substrate assembly 20 is disposed at a fixed position of the unit cell 10 with the tip thereof being in contact with the bottom of the ring groove 16 of the unit cell 10. Further, the first molded insulator 24 shown in the drawing is provided with a positioning projection 24c on the outer periphery in order to connect the second molded insulator 25 to a fixed position.

  The second molded insulator 25 is connected to the first molded insulator 24 to cover and insulate the outer periphery and the upper surface outer periphery of the substrate assembly 20. 10 and 11 are perspective views of the second molded insulator 25 as viewed from above and below. The second molded insulator 25 shown in these figures has a ring shape as a whole and an L shape in cross section. The second molded insulator 25 having this shape is formed in an L shape by connecting a peripheral wall portion 25B that covers the outer peripheral surface of the substrate assembly 20 and an end surface cover portion 25A that covers the front end surface of the substrate assembly 20. In the end surface cover portion 25A, the inner diameter of the opening 25a is substantially equal to the outer diameter of the communication terminal 22, and more precisely, slightly larger than the outer diameter of the communication terminal 22. As shown in the perspective view of FIG. 2 and the cross-sectional perspective view of FIG. 4, the second molded insulator 25 having this shape has the communication terminal 22 disposed in the opening 25a of the end face cover portion 25A, and the end face cover portion 25A. And the surface of the communication terminal 22 are arranged on the same plane. Further, the second molded insulator 25 shown in the figure has an insertion recess 25b that is inserted while positioning a pair of solder terminals 22A provided at the position facing the communication terminal 22, and the inner periphery of the opening 25a. Provided. The second molded insulator 25 is disposed in a state in which the pair of solder terminals 22A provided on the communication terminal 22 is guided to the fitting recess 25b of the opening 25a, and the communication terminal 22 is placed at a fixed position of the opening 25a. Deploy.

  Furthermore, the second molded insulator 25 shown in FIGS. 10 and 11 is provided with a positioning recess 25c into which the positioning convex portion 24c provided on the outer periphery of the first molded insulator 24 is fitted on the inner periphery of the opening 25a. ing. The second molded insulator 25 is arranged in such a manner that the positioning convex portion 24c provided on the first molded insulator 24 is guided to the positioning concave portion 25c of the opening 25a, and the first molded insulator 24 is opened. It connects with the fixed position of the part 25a. Furthermore, the second molded insulator 25 shown in FIG. 11 is provided with three convex locking claws 25 d that are locked to the first molded insulator 24. The second molded insulator 25 shown in this figure protrudes inwardly on the inner surface of the opening 25a of the end surface cover portion 25A and is provided with a locking claw 25d. As shown in FIG. 4, the latching claws 25 d are molded from the plastic of the second molded insulator 25, elastically deformed, and latched to the first molded insulator 24. The first molded insulator 24 is provided with three locking recesses 24d on the outer periphery in order to lock the three locking claws 25d.

  As shown in the cross-sectional perspective view of FIG. 4, the second molded insulator 25 has the end surface cover portion 25 </ b> A, the surface of the circuit board 21, the outer peripheral surface of the first molded insulator 24, and the communication terminal 22. The outer peripheral surface is covered and insulated, and the outer periphery of the circuit board 21 is covered and insulated by the peripheral wall portion 25B. In the cylindrical battery of FIG. 4, the outer diameters of the first molded insulator 24 and the communication terminal 22 are made the same, and the outer peripheral surfaces of the first molded insulator 24 and the communication terminal 22 are positioned on the same plane. The outer peripheral surfaces of the first molded insulator 24 and the communication terminal 22 located on the same surface are covered with the inner peripheral surface of the opening 25 a of the end surface cover portion 25 </ b> A of the second molded insulator 25.

The above cylindrical battery is assembled in the following steps.
(1) The connecting metal plate 17 is connected to the sealing plate 13 of the unit cell 10 by spot welding.
(2) An electronic component that realizes a data processing circuit is mounted on the circuit board 21.
(3) The negative electrode terminal 27 is connected to the circuit board 21 by a method such as soldering or spot welding so that the negative electrode terminal 27 is positioned in the notch 21B of the circuit board 21.
(4) The first molded insulator 24 is laminated on the surface of the circuit board 21, and the circuit board 21 and the first molded insulator 24 are connected. The first molded insulator 24 is connected to a fixed position of the circuit board 21 by inserting the support legs 24a into the positioning holes 21D.
(5) The communication terminal 22 is disposed in the recess 24b provided on the surface of the first molded insulator 24, and the solder terminal 22A of the communication terminal 22 is used for the slit-shaped communication terminal provided on the circuit board 21. It is inserted into the hole 21C, and its tip is soldered to the circuit board 21 for connection. The communication terminal 22 fixed to the circuit board 21 via the solder terminal 22A is fixed by sandwiching the first molded insulator 24.
(6) As shown in FIG. 2, the circuit board 21 formed by connecting the first molded insulator 24 and the communication terminal 22 is connected to the unit cell 10. At this time, the convex electrode 14 of the unit cell 10 is inserted through the first molded insulator 24 and the through hole 26 of the circuit board 21. The circuit board 21 is connected to the positive electrode of the battery through the connection tab 17 </ b> A of the connection metal plate 17 and to the negative electrode of the battery through the negative electrode terminal 27. The connection tab 17A of the connection metal plate 17 is disposed in the notch 21A of the circuit board 21 and is connected to the circuit board 21 by a method such as soldering or spot welding. The negative electrode terminal 27 is connected to the caulking ridge 15 of the outer can 12 by spot welding.
(7) As shown in FIG. 3, the second molded insulator 25 is connected to the first molded insulator 24. As shown in FIG. 4, the second molded insulator 25 is connected to the first molded insulator 24 by hooking the locking claw 25 d on the locking recess 14 d of the first molded insulator 24.
(8) Finally, the outer peripheral surfaces of the substrate assembly 20 and the unit cell 10 are covered with an insulating tube (not shown). The insulating tube is a heat-shrinkable tube that covers and insulates the outer periphery of the cylindrical battery with both end faces open.

  In the cylindrical battery of the above embodiment, the board assembly 20 includes a circuit board 21 on which a data processing circuit is mounted, and a communication terminal 22 connected to the data processing circuit of the circuit board 21. However, the cylindrical battery of the present invention does not specify the circuit mounted on the circuit board as the data processing circuit. The cylindrical battery of the present invention has a feature that it can be made multifunctional by mounting various electronic elements on the board assembly. In the cylindrical battery, for example, a circuit for displaying the remaining capacity of the unit cell can be mounted on the board assembly. In this board assembly, a remaining capacity detection circuit, an operation switch, and a display unit are mounted on a circuit board as a remaining capacity display circuit. In the remaining capacity display circuit, the remaining capacity detection circuit can detect the remaining capacity of the unit cell in a state where the operation switch is turned on, and can display the remaining capacity on the display unit according to the remaining capacity. The remaining capacity detection circuit detects the voltage of the unit cell, and determines the remaining capacity of the unit cell from the detected voltage. A push switch can be used as the operation switch, and an LED can be used as the display unit. This remaining capacity display circuit can display the remaining capacity of the unit cell in the lighting state of the LED by pressing the push switch. Depending on the remaining capacity of the unit cell, the remaining capacity display circuit, for example, turns off the LED when the remaining amount is 0 to 20%, blinks the LED when the remaining amount is 20 to 80%, and the remaining amount is 80 to 80%. When it is 100%, the remaining capacity can be displayed by turning on the LED. Furthermore, the remaining capacity display circuit can display the remaining capacity of the unit cell in stages by changing the color of the LED to be lit and the lighting state in various ways. As described above, the cylindrical battery provided with the unit cell remaining capacity display circuit in the board assembly can be used very conveniently because the remaining capacity of the battery can be easily checked.

  Hereinafter, FIGS. 12 to 15 show a cylindrical battery having the entire outer size as the outer shape of the standard battery and having a function of displaying the remaining capacity of the battery. The cylindrical battery shown in the figure is a cylindrical AA battery whose outer size is an AA battery standard. However, a cylindrical battery is not specified as an AA battery, but is a cylindrical battery having a standard-shaped outer shape, and its shape is a cylindrical single battery, a single battery, a single battery, and so on. Or a square battery.

  In the cylindrical battery shown in FIGS. 12 to 15, the substrate assembly 40 is fixed to the end of the unit cell 30 on the convex electrode 34 side. As shown in FIG. 15, the unit cell 30 has an electrode 39 and an electrolytic solution placed in a sealed outer case 31. The outer case 31 includes an outer can 32 manufactured by pressing a metal plate into a cylindrical shape, and a metal plate sealing plate 33 that closes an opening of the outer can 32. The outer can 32 is crimped along the outer peripheral edge of the sealing plate 33, and the opening is sealed with the sealing plate 33. On the outer peripheral edge of the sealing plate 33, caulking ridges 35 by caulking are provided. The sealing plate 33 and the outer can 32 are caulked through an insulating material 38, and the sealing plate 33 is connected to the positive electrode and the outer can 32 is connected to the negative electrode, as is well known in the art. The sealing plate 33 is provided with a convex electrode 34 at the center, and a ring groove 36 is provided between the convex electrode 34 and the caulking ridge 35.

  The cylindrical battery has an outer size of the standard battery with the substrate assembly 40 fixed to the convex electrode 34 side of the unit cell 30. Accordingly, the unit cell 30 is made smaller than the size of the substrate assembly 40 compared to a normal standard battery in which the substrate assembly 40 is not fixed. Since the board assembly 40 is fixed to the convex electrode 34 side of the unit cell 40, this portion is made small, that is, the length of the outer can 32 is slightly shortened. However, in the cylindrical battery of the present invention, the convex electrode 34 of the unit cell 30 is projected from the substrate assembly 40 and used as the positive electrode of the output terminal, so that the tip of the convex electrode 34 to the bottom of the outer can 32 is used. The dimensions are those of a standard battery that is not fixed to the board assembly. For this reason, in the cylindrical battery of the present invention, the height at which the convex electrode 34 of the unit cell 30 protrudes from the sealing plate 33 is set higher than that of a general standard battery. The cylindrical battery shown in the figure has an outer size of an AA battery standard with the substrate assembly 40 fixed to the unit cell 30. In other words, the outer shape of the substrate assembly 40 is manufactured in a state in which the outer shape of the cylindrical battery conforms to the AA battery standard in a state where it is fixed to the unit cell 30.

  As shown in FIGS. 12 to 15, the board assembly 40 is arranged at a fixed position while insulating the circuit board 41 on which a data processing circuit (not shown) for calculating the remaining capacity of the battery is mounted and the circuit board 41. And a molded insulator 43 for the purpose. The molded insulator 43 is connected to the convex electrode 34 side of the unit cell 30 above the circuit board 41 and covers the entire circuit board 41.

  The cylindrical battery shown in the figure has the substrate assembly 40 fixed to the end of the unit cell 30 on the projecting electrode 34 side, and the projecting electrode 34 of the unit cell 30 protrudes from the substrate assembly 40 to output the positive terminal. Use as For this reason, the substrate assembly 40 is provided with a through-hole 46 through which the convex electrode 34 of the unit cell 30 is inserted at the center. The convex electrode 34 is inserted into the through hole 46, and the substrate assembly 40 is disposed at a fixed position at the end of the unit cell 30. The circuit board 41 has a ring shape, so that a large board area can be secured, and the circuit board 41 can be easily fixed to the circuit board 41 by being fitted into the convex electrode 34 of the sealing plate 33.

  However, the present invention does not specify the shape of the substrate assembly as a ring shape having a through hole through which the convex electrode of the unit cell is inserted. Although not shown, the substrate assembly can be formed in various shapes that can be disposed on the end surface of the unit cell on the convex electrode side. For example, when the unit cell is a cylindrical battery, the cylindrical battery can be formed into a C-shaped or eel shape having an arcuate outer shape along the outer periphery of the cylindrical battery. In addition, when the unit cell is a rectangular battery, the shape of the substrate assembly can be a rectangular parallelepiped shape along the outer periphery of the rectangular battery. These substrate assemblies may be arranged only in a part around the convex electrode without being arranged along the entire circumference of the convex electrode.

  In the cylindrical battery shown in FIGS. 12 to 15, the remaining capacity of the battery is detected by a data processing circuit mounted on the circuit board 41 of the board assembly 40. Although not shown, the data processing circuit that calculates the remaining capacity of the battery includes a remaining capacity determination unit that calculates the remaining capacity from the voltage of the unit cell 30. The data processing circuit includes a voltage detection circuit that detects the voltage of the unit cell 30, and the remaining capacity determination unit determines the remaining capacity of the unit cell 30 from the detection voltage detected by the voltage detection circuit. The remaining capacity determination unit calculates the remaining capacity of the battery by comparing a reference voltage stored in a storage circuit such as a memory with a detected voltage, for example.

  Further, the board assembly 40 shown in the figure includes a display unit 44 that displays the remaining battery capacity detected by the data processing circuit, and a switch 45 that displays the remaining capacity. The display unit 44 and the switch 45 illustrated in FIG. 16 are fixed to the circuit board 41. However, the display unit and the switch can be fixed to the molded insulator.

  The display unit 44 shown in the figure is an LED. The display part 44 which is LED makes the whole or a part of the molded insulator 43 covering the upper part made of translucent plastic, and transmits the light of the LED disposed on the inside to irradiate the outside. The molded insulator 43 can transmit the light emitted from the LED and display it outside without providing an opening window for exposing the display unit 44. However, the molded insulator can open an opening window that exposes the display portion, and can expose the display portion from the opening window to display the remaining capacity of the battery.

  The display unit 44, which is an LED, displays by changing the lighting state according to the degree of remaining battery capacity. The display unit 44 displays, for example, by changing the color of the LED or changing the blinking pattern according to the remaining capacity of the battery. The structure in which the display unit changes the light emission color of the LED in accordance with the remaining capacity of the battery has a good appearance and can clearly display the remaining capacity. The structure in which the display unit changes the blinking pattern of the LED according to the remaining capacity of the battery can be displayed using a single color LED. For this reason, it has the feature which can be designed in a space-saving and low cost. The display unit that uses a single color LED can change the blinking cycle of the LED according to the degree of the remaining capacity, and display the difference in the remaining capacity in stages. For example, the display unit can distinguish and display three types of “off”, “blinking”, and “on” according to the remaining capacity of the unit cell. The lighting pattern of the LED can be stored in the memory of the data processing circuit. However, the display unit is not necessarily limited to the LED, and may be any other structure that can display the remaining capacity of the battery to the outside. As the display unit, for example, a liquid crystal display or the like that can display a display in a different display format depending on the remaining battery capacity can be used.

  The switch 45 is arranged so as to be exposed from the molded insulator 43 so that it can be operated from the outside. When the switch 45 is operated, the data processing circuit detects and displays the remaining capacity of the unit cell 1. This data processing circuit detects the remaining capacity of the unit cell 1 at the timing when the switch 45 is operated, so that the power of the unit cell 1 is continuously supplied to the circuit and the power is effectively consumed. Can be prevented. Furthermore, the data processing circuit is provided with a timer so that the remaining capacity is detected, and then the display unit 44 is lit and displayed for a predetermined time, so that the remaining capacity can be reliably displayed while saving the power of the unit cell 30. .

  As described above, the cylindrical battery equipped with the data processing circuit for detecting the remaining capacity can be easily checked without using another device when used or stored. There is a feature that can be manufactured with a simple structure.

  The data processing circuit of the circuit board 41 has a structure that operates with electric power supplied from the unit cell 30. Therefore, the circuit board 41 is connected to the positive electrode and the negative electrode of the unit cell 30. The circuit board 41 shown in FIGS. 13 and 14 is provided with a through hole 41A and a notch 41B as notches for connecting to the positive electrode and the negative electrode of the unit cell 30 in order to supply power from the unit cell 30. . However, the circuit board can be provided with two notches extending to the outer periphery, and one notch can be used for the positive electrode and the other notch can be used for the negative electrode.

  The circuit board 41 in the figure is connected to the positive electrode of the unit cell 30 via the convex electrode 34. As shown in FIGS. 14 and 15, the convex electrode 34 is formed by press-molding a metal plate into a shape having a projecting portion at the center of a circular flat portion, and a connecting metal plate 37, which is a flat portion, is a sealing plate. It is fixed to the upper surface of 33 and connected to the positive electrode of the unit cell 30. The connection metal plate 37 of the convex electrode 34 is fixed to the sealing plate 33 by spot welding. The connection metal plate 37 has a ring shape, and is provided with a connection tab 37A that is connected to the circuit board 41 so as to protrude from the outer peripheral portion. The connection metal plate 37 is bent upward with the connection tab 37A and inserted into the through hole 41A of the circuit board 41, and is connected to the circuit board 41 by soldering, spot welding, wire bonding, or the like. The connection metal plate 37 may have a shape other than the ring shape as long as it can transmit power with less power loss than the sealing plate 33.

  Furthermore, the circuit board 41 is connected to the negative electrode of the unit cell 30 via the negative electrode terminal 47 as shown in FIGS. The circuit board 41 fixes a negative electrode terminal 47 connected to the outer can 32 that is the negative electrode of the unit cell 30. The negative electrode terminal 47 is a metal plate, is disposed so as to be positioned in the notch 41B of the circuit board 41, and is connected to the circuit board 41 by a method such as soldering, spot welding, or wire bonding. The negative electrode terminal 47 disposed in the notch 41B is fixed to the caulking ridge 35 of the outer can 32 by a method such as spot welding.

  The molded insulator 23 is manufactured by molding an insulating material such as plastic. The whole or a part of the molded insulator 43 that transmits the light of the LED that is the display unit 44 disposed on the inside and irradiates the LED is made of a light-transmitting plastic. However, the molded insulator that opens the opening window that exposes the display portion can be made of a non-translucent plastic.

  As shown in FIGS. 12 to 15, the molded insulator 23 is disposed so as to cover the upper side of the circuit board 41, and causes the convex electrode 34 to protrude from the center. As shown in FIG. 17, the molded insulator 23 has an overall shape of a ring and a cross-sectional shape of an L shape. The shaped insulator 23 in this shape is formed in an L shape by connecting a peripheral wall portion 43B that covers the outer peripheral surface of the circuit board 41 and an end surface cover portion 43A that covers the upper surface of the circuit board 41.

  The inner diameter of the peripheral wall portion 43B is made substantially equal to or slightly larger than the outer diameter of the circuit board so that the circuit board 41 can be accommodated inside the lower end. Further, the peripheral wall portion 43B has an outer diameter that is substantially equal to the outer diameter of the unit cell 30, and the overall appearance of the cylindrical battery is shaped to approximate the appearance of a standard battery. Furthermore, the peripheral wall 43B shown in the drawing has an opening 43a for exposing the switch 45 fixed to the circuit board 41 to the outside. Then, the user can operate the switch 45 by pressing the protruding portion of the switch 45 from the opening 43a.

  The end surface cover portion 43A is provided with a through hole 46 through which the convex electrode 34 of the unit cell 30 is inserted in the center portion. The through hole 46 has an inner diameter slightly larger than the outer diameter of the convex electrode 34 so that the convex electrode 34 can be inserted in a narrow gap.

  The molded insulator 23 is disposed at the end of the unit cell 30 on the convex electrode 34 side, and covers the outer periphery of the circuit board 21 with the peripheral wall 25B as shown in FIGS. The end surface cover portion 25A covers and insulates the surface of the circuit board 21. The molded insulator 43 has the protruding electrode 34 inserted through the through-hole 46 so that the lower end surface of the peripheral wall portion 43B is brought into contact with the crimping protrusion 35 of the unit cell 30 and the switch 45 is exposed from the opening 43a. It is arranged at a fixed position with the posture to be made. The formed insulator 23 arranged at a fixed position at the end of the unit cell 30 has the convex electrode 34 protruded from the end surface cover portion 43 </ b> A and the tip of the convex electrode 34 protruded from the upper surface of the substrate assembly 40. Yes.

The above cylindrical battery is assembled in the following steps.
(1) The convex electrode 34 is fixed to the sealing plate 33 of the unit cell 30. The convex electrode 34 is fixed to the sealing plate 33 by spot welding a connecting metal plate 37.
(2) An electronic component that implements a data processing circuit for detecting the remaining capacity is mounted on the circuit board 41.
(3) The negative electrode terminal 47 is connected to the circuit board 41 by a method such as soldering or spot welding so that the negative electrode terminal 47 is positioned in the notch 41B of the circuit board 41.
(4) As shown in FIG. 14, the circuit board 41 is connected to the unit cell 30. At this time, the convex electrode 34 of the unit cell 30 is inserted into the through hole 46 of the circuit board 41, and the connection tab 37A of the connection metal plate 37 is inserted into the through hole 41A.
(5) As shown in FIG. 13, the circuit board 41 disposed at a fixed position of the unit cell 30 is electrically connected to the unit cell 30. The circuit board 41 is connected to the positive electrode of the battery via the connection tab 37 </ b> A of the connection metal plate 37 and to the negative electrode of the battery via the negative electrode terminal 47. The connection tab 37A of the connection metal plate 37 is inserted into the through hole 41A of the circuit board 41 and connected to the circuit board 41 by a method such as soldering or spot welding. The negative electrode terminal 47 is connected to the oak 3 ridge 35 of the outer can 12 by spot welding.
(6) As shown in FIG. 12, the molded insulator 43 is connected to the end of the unit cell 30. The molded insulator 43 is connected to the outer peripheral surface of the circuit board 41 in a state where the convex electrode 34 is inserted into the through hole 46 and the lower end surface of the peripheral wall portion 43B is brought into contact with the caulking ridge 35 of the unit cell 30. The The molded insulator 43 is fixed to the circuit board 41 by bonding, ultrasonic welding, or alternatively with a locking structure. The molded insulator 43 is disposed at a fixed position in a posture in which the switch 45 is exposed from the opening 43 a and is connected in a posture in which the tip of the convex electrode 34 protrudes from the upper surface of the substrate assembly 40.
(7) Finally, the outer peripheral surfaces of the substrate assembly 40 and the unit cell 30 are covered with an insulating tube (not shown). The insulating tube is a heat-shrinkable tube that covers and insulates the outer periphery of the cylindrical battery with both end faces open.

It is a perspective view which shows the convex-electrode side of the cylindrical battery concerning one Example of this invention. It is a disassembled perspective view of the cylindrical battery shown in FIG. It is a disassembled perspective view of the cylindrical battery shown in FIG. It is a cross-sectional perspective view of the cylindrical battery shown in FIG. It is a perspective view which shows the convex part electrode side of a unit cell. It is a back perspective view of a circuit board. It is a perspective view of a communication terminal. It is a perspective view of a 1st shaping | molding insulator. FIG. 9 is a rear perspective view of the first molded insulator shown in FIG. 8. It is a perspective view of a 2nd shaping | molding insulator. It is a back perspective view of the 2nd shaping | molding insulator shown in FIG. It is a perspective view which shows the convex part electrode side of the cylindrical battery concerning the other Example of this invention. It is a disassembled perspective view of the cylindrical battery shown in FIG. It is a disassembled perspective view of the cylindrical battery shown in FIG. It is a cross-sectional perspective view of the cylindrical battery shown in FIG. It is a perspective view of a circuit board. It is a perspective view of a shaping | molding insulator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Unit cell 11 ... Exterior case 12 ... Exterior can 13 ... Sealing plate 14 ... Convex part electrode 14A ... Step part 15 ... Crimping convex strip 16 ... Ring groove 17 ... Connection metal plate 17A ... Connection tab 18 ... Insulating material 19 ... Electrode 20 ... Board assembly 21 ... Circuit board 21A ... Notch
21B ... Notch
21C ... Communication terminal hole
21D ... Positioning hole 22 ... Communication terminal 22A ... Solder terminal 23 ... Molding insulator 24 ... First molding insulator 24a ... Supporting foot
24b ... recess
24c ... positioning convex part
24d ... Locking recess 25 ... Second molded insulator 25A ... End face cover
25B ... Perimeter wall
25a ... opening
25b ... Insertion recess
25c: positioning recess
25d ... Locking claw 26 ... Through hole 27 ... Negative electrode terminal 28 ... ASIC
DESCRIPTION OF SYMBOLS 29 ... External component 30 ... Unit cell 31 ... Outer case 32 ... Outer can 33 ... Sealing plate 34 ... Convex part electrode 35 ... Caulking protrusion 36 ... Ring groove 37 ... Connection metal plate 37A ... Connection tab 38 ... Insulating material 39 ... Electrode 40 ... Board assembly 41 ... Circuit board 41A ... Through hole
41B ... Notch 43 ... Molded insulator 43A ... End face cover
43B ... Perimeter wall
43a ... Opening 44 ... Display 45 ... Switch 46 ... Through-hole 47 ... Negative terminal

Claims (14)

A cylindrical battery in which the substrate assembly (20) is fixed to the end of the unit cell (10) on the convex electrode (14) side, and the unit cell (10) is attached to the sealed outer case (11). The outer case (11) has a structure in which an electrode (19) and an electrolytic solution are put, and the opening of the cylindrical outer can (12) is crimped and closed with a sealing plate (13), The outer peripheral edge of the sealing plate (13) is provided with crimping ridges (15) by caulking, and the sealing plate (13) is further provided with a convex electrode (14) at the center, and the convex electrode (14 ) As the positive electrode and the outer can (12) as the negative electrode,
Further, the board assembly (20) includes a circuit board (21) for mounting a data processing circuit, a communication terminal (22) connected to the data processing circuit of the circuit board (21), and the circuit board (21 ) And a molded insulator (23) in which the communication terminal (22) is disposed at a fixed position,
The substrate assembly (20) has a through-hole (26) through which the convex electrode (14) of the unit cell (10) is inserted in the center portion, and the periphery of the through-hole (26) is the substrate assembly (20). The ring-shaped communication terminal (22) is fixed on the top surface of
A connection metal plate (17) having a connection tab (17A) connected to the circuit board (21) is fixed to the surface of the sealing plate (13),
The convex electrode (14) of the unit cell (10) is inserted into the through hole (26) of the substrate assembly (20), and the substrate assembly (20) is disposed on the convex electrode (14) side of the unit cell (10). While being fixed to the end, the connection tab (17A) of the connection metal plate (17) is connected to the circuit board (21), the circuit board (21) is connected to the convex electrode (14), The convex electrode (14) of the unit cell (10) has a height protruding from the upper surface of the substrate assembly (20) to be fixed, and further, the substrate assembly (20) is provided on the unit cell (10). A cylindrical battery that is fixed and has the entire outer size of the standard battery.   The cylindrical battery according to claim 1, wherein the entire outer size is an AA battery standard outer shape.   The cylindrical battery according to claim 1, wherein the data processing circuit mounted on the circuit board is connected to the positive electrode and the negative electrode of the unit cell (10) and is supplied with electric power from the unit cell (10).   A molded insulator (23) is connected to the first molded insulator (24) disposed between the circuit board (21) and the communication terminal (22), and the first molded insulator (24). The cylindrical battery according to claim 1 or 2, further comprising a circuit board (21) and a second molded insulator (25) covering the outer periphery of the communication terminal (22).   The first molded insulator (24) has a ring-shaped recess (24b) into which the communication terminal (22) is fitted, and the communication terminal (22) is fitted into the recess (24b). The cylindrical battery described in 1 or 2.   A ring groove (16) is provided between the convex electrode (14) and the crimping ridge (15), and a positioning hole (21D) provided in the circuit board (21) by the first molded insulator (24). ) Is inserted into the ring groove (16) through the circuit board (21), and the first molded insulator (24) is provided. The cylindrical battery according to claim 1 or 2, being fixed at a fixed position of the unit cell (10).   The circuit board (21) has notches (21A) and (21B) on the outer peripheral edge.In these notches (21A) and (21B), the circuit board (21) serves as a positive electrode and a negative electrode of the unit cell (10). The cylindrical battery according to claim 1 or 2, which is connected.   A connection metal plate (17) having a connection tab (17A) connected to the circuit board (21) on the outer periphery is fixed to the surface of the sealing plate (13), and the connection tab (17A) of the connection metal plate (17) is connected to the circuit. The cylindrical battery according to claim 7, wherein the notch (21A) of the substrate (21) is connected to the circuit substrate (21), and the circuit substrate (21) is connected to the convex electrode (14).   The data processing circuit mounted on the circuit board (21) calculates one or more pieces of information on the remaining capacity of the battery, the degree of deterioration of the battery, and the memory effect of the battery, and outputs the information from the communication terminal (22). The cylindrical battery described in 1 or 2. A unit cell (10), (30) is a cylindrical battery in which the substrate assembly (20), (40) is fixed to the end of the convex electrode (14), (34) side of the unit cell (10). ), (30) is a structure in which the electrodes (19), (39) and the electrolyte are put in a sealed outer case (11), (31), and this outer case (11), (31) The cylindrical outer cans (12) and (32) are crimped and closed with sealing plates (13) and (33), and the sealing plates (13) and (33) are convex in the center. Partial electrodes (14), (34) are provided, the convex electrodes (14), (34) are positive electrodes, and the outer cans (12), (32) are negative electrodes,
Further, the board assembly (20), (40) includes a circuit board (21), (41) on which electronic elements are mounted and a molded insulator (23) that insulates the circuit boards (21), (41). ), (43)
Connection metal plates (17), (37) with connection tabs (17A), (37A) connected to circuit boards (21), (41) are fixed to the surfaces of the sealing plates (13), (33),
The substrate assembly (20), (40) is fixed to the end of the unit cell (10), (30) on the convex electrode (14), (34) side, and the connection metal plates (17), (37 ) Connection tabs (17A), (37A) are connected to the circuit boards (21), (41), and the circuit boards (21), (41) are connected to the convex electrodes (14), (34), Further, the convex electrodes (14), (34) of the unit cells (10), (30) have a height protruding from the upper surface of the substrate assembly (20), (40) to be fixed, A cylindrical battery whose size is the outer shape of a standard battery.   The outer case (11), (31) is provided with caulking ridges (15), (35) by caulking on the outer peripheral edge of the sealing plate (13), (33), and the circuit boards (21), (41 The cylindrical battery according to claim 10, wherein the negative electrode terminals (27), (47) connected to the crimping protrusions (15), (35) are connected to the crimping protrusions (15), (35).   The cylindrical battery according to claim 10, wherein a circuit board (41) of the board assembly (40) is mounted with a data processing circuit for calculating a remaining capacity.   A data processing circuit that is mounted on the circuit board (41) and calculates the remaining capacity operates with power supplied from the unit cell (30), and serves as a power source for operating the data processing circuit that calculates the remaining capacity. The cylindrical battery according to claim 10, wherein the battery (30) and the unit cell (30) whose remaining capacity is calculated are the same.   The cylindrical battery according to claim 10, wherein the board assembly (40) includes a display unit (44) for remaining capacity, and a switch (45) for displaying the remaining capacity by the display unit (44).

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