JP2005317396A - Battery pack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To connect a circuit board and a board holder to make an external shape compact without projecting a part of the board holder from the surface of the circuit board, and simply, easily, smoothly, surely connect the circuit board to the board holder without requiring high dimensional accuracy in the connected part, and simply separate the circuit board from the board holder. <P>SOLUTION: A battery pack is equipped with a battery 1, the circuit board 2 electrically connected to the battery 1, and the board holder 3 connecting the circuit board 2 in a home position, and the circuit board 2 is connected to the home position through the board holder 3. The circuit board 2 fixes a hook piece 4 to one surface. The board holder 3 has a hooking rail 5 connecting by hooking the hook piece 4. The battery pack is connected in a hooking state so as to be capable of moving the hooking piece 4 along the hooking rail 5 and the circuit board 2 is connected to the board holder 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a battery pack in which a circuit board is connected to a substrate holder and connected to the battery.

A battery pack in which a battery protection circuit is mounted or a circuit board on which an output terminal is fixed is arranged at a fixed position is housed in a case by connecting the circuit board to a board holder that is a plastic molded product. Since the substrate holder is manufactured by molding plastic, it can be formed into a shape that allows the circuit board to be connected to a fixed position. A battery pack has been developed in which a circuit board is connected to a fixed position by a fitting structure, or a circuit board is connected to a fixed position by a hook hook formed integrally with a board holder (see Patent Documents 1 and 2). ).
Japanese Patent Laid-Open No. 11-242949 JP 2000-133224 A

  The battery pack described in Patent Document 1 is provided with a notch at the outer peripheral edge of the circuit board, a convex portion guided by the notch is provided at the substrate holder, and the convex portion is provided at the notch to provide the circuit board and the substrate holder. Are linked in place. Further, a substrate holder is sandwiched between the circuit board and the battery, and the circuit board is connected to the battery. The circuit board is connected to the battery via a lead plate. In the battery pack having this structure, the circuit board, the board holder, and the battery can be integrally connected by connecting the circuit board to the battery. However, in a state where the circuit board is not connected to the battery, the circuit board and the substrate holder cannot be held in a fixed state. For this reason, until the circuit board is connected to the battery, the circuit board and the board holder are easily separated from each other, which takes time for assembly. In particular, since the lead board of the circuit board is connected to the battery in a state where the circuit board and the board holder are connected to a fixed position, it takes time to connect the lead board.

  The battery pack described in Patent Document 2 is provided with a hook hook integrally formed on a plastic substrate holder. The hook is provided so that the outer peripheral edge of the circuit board can be locked and held in place. The substrate holder having this structure can be connected to a fixed position by hooking the circuit board with a hook. This structure can securely connect the circuit board to the board holder. However, according to this structure, since the hook hook protrudes from the surface of the circuit board, the surface of the circuit board cannot be made flat. For this reason, there exists a fault which the volume which occupies substantially in the state accommodated in a case becomes large. This is because the hook is hooked and fixed at a fixed position with both sides of the circuit board being sandwiched. Since it is extremely important how small the overall size of the battery pack can be, it is a big drawback to make the battery pack smaller by making a part of the hook hook project from the circuit board and increasing the substantial occupied area It becomes.

  Further, in the structure in which the circuit board is held in place by the hook, the hook is elastically deformed and the circuit board is connected to the fixed position. Therefore, the hook needs to be elastically deformed so as not to be damaged. . The hook that is elastically deformed requires a predetermined length at the deformed portion. If the length is too short, the hook is hard and cannot be deformed smoothly, and if it is forcibly deformed, it will be damaged. For this reason, there exists a fault which a connection part becomes large.

  Furthermore, the structure in which the hooks are connected by being elastically deformed requires extremely high accuracy for forming the hooks, and also requires very high dimensional accuracy for the outer shape of the circuit board. If the accuracy is poor, there are disadvantages such as the circuit board cannot be securely locked or cannot be smoothly connected. Furthermore, the circuit boards connected by the hooks have a drawback that they cannot be easily separated when disassembled for repair or dismantling.

The present invention has been developed for the purpose of solving such drawbacks. An important object of the present invention is to provide a battery pack having a structure in which a part of a substrate holder does not protrude from the surface of a circuit board, and the outer shape can be made compact by connecting the circuit board and the substrate holder.
Another important object of the present invention is to provide a battery pack in which a circuit board and a board holder can be connected simply and easily and smoothly without being disconnected.
Furthermore, another important object of the present invention is a pack in which the connecting portion can be made compact, high dimensional accuracy is not required for this portion, and the circuit board and the substrate holder can be easily separated if necessary. To provide a battery.

  The battery pack according to the present invention includes a battery 1, a circuit board 2 electrically connected to the battery 1, and a board holder 3 that connects the circuit board 2 to a fixed position. 3 is connected to a fixed position. The circuit board 2 has a hook piece 4 fixed on one surface. The substrate holder 3 is provided with a hook rail 5 that hooks and connects the hook pieces 4. The battery pack is connected in a hooked state so that the hooking piece 4 can move along the hooking rail 5, and the circuit board 2 is connected to the board holder 3.

  The battery pack of the present invention can be provided with a plurality of hooking pieces 4 on the circuit board 2 and with a plurality of hooking rails 5 for connecting the hooking pieces 4 in a posture parallel to each other.

  In the battery pack of the present invention, the hook piece 4 can be a metal piece that is fixed to the circuit board 2 by soldering.

  In the battery pack according to the present invention, the hooking piece 4 can be bent into a hook shape that is locked to the hooking rail 5 as a lead board 9 that is fixed to the circuit board 2 by soldering. it can.

  In the battery pack of the present invention, the metal block 14 is soldered and fixed to the circuit board 2, the lead plate 9 is fixed to the metal block 14, and the leading end of the lead plate 9 is projected from the metal block 14 and hooked. It can be a piece 4.

  In the battery pack of the present invention, the hooking piece 4 can be a lead plate 9 fixed so as to protrude to the outside of the circuit board 2.

  Furthermore, the battery pack of the present invention can store the battery 1, the circuit board 2, and the board holder 3 in the case 11.

  The battery pack of the present invention has a feature in which a part of the substrate holder does not protrude from the surface of the circuit board, and the outer shape can be made compact by connecting the circuit board and the substrate holder. That is, the battery pack of the present invention fixes the hooking piece to one surface of the circuit board, and the board holder is provided with a hooking rail for hooking and connecting the hooking piece, and the hooking piece is moved along the hooking rail. This is because the circuit board is connected to a fixed position of the substrate holder by connecting in a hooked state as possible. The battery pack of this structure can connect the circuit board to the board holder while moving the hook piece along the hook rail while the hook piece is hooked on the hook rail, so the circuit board and the board holder can be easily and easily connected. And, it can be connected smoothly and so as not to come off. Furthermore, since the battery pack having this structure can be disposed without protruding the hooking piece of the circuit board and the hooking rail of the board holder outward, the circuit board and the board holder can be connected in a compact manner. Further, the connecting portion composed of the hooking piece and the hooking rail is not required to have high dimensional accuracy like a hook that is elastically deformed, and is not limited by its size or shape, so that it can be easily formed. Furthermore, the battery pack having this structure can be easily separated while moving the hooking piece along the hooking rail even when the circuit board and the board holder are separated.

  Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify a battery pack for embodying the technical idea of the present invention, and the present invention does not specify the battery pack as follows.

  Further, in this specification, for easy understanding of the scope of claims, numbers corresponding to the members shown in the embodiments 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 battery pack shown in FIGS. 1 to 44 includes a battery 1, a circuit board 2 electrically connected to the battery 1, and a board holder 3 connecting the circuit board 2 to a fixed position. The circuit board 2 is connected to the board holder 3 and arranged at a fixed position. Further, the battery pack shown in the figure stores a battery assembly 10 in which a battery 1, a circuit board 2 and a board holder 3 are connected in a case 11.

  The battery pack shown in these figures is provided with a hook piece 4 fixed on one surface of a circuit board 2. The substrate holder 3 is provided with a hook rail 5 that hooks and connects the hook pieces 4. The circuit board 2 is connected to the board holder 3 by connecting the hook pieces 4 so that they can move along the hook rails 5.

  In the battery pack shown in these drawings, the circuit board 2 is disposed so as to face the side surface of the square battery, and the output terminal 6 is fixed to the circuit board 2. As shown in FIG. 1, the case 11 has a terminal window 7 opened in the peripheral wall of the side portion, and the output terminal 6 is disposed inside the terminal window 7. As shown in FIG. 45, the battery pack can be configured such that the terminal window 7 is opened on the end surface of the case 11 and the circuit board is arranged inside the terminal window 7. In this battery pack, the circuit board on which the output terminal 6 is fixed is arranged at a position facing the end face of the prismatic battery.

  The circuit board 2 has an output terminal 6 fixed on the front surface side, and an electronic component 8 and a hook piece 4 fixed on the back surface side. These circuit boards 2 have hook pieces 4 fixed to both end portions thereof. The circuit board 2 can be firmly connected to the board holder 3 with the hook pieces 4 provided at both ends. In particular, the structure in which the circuit board 2 is connected to the board holder 3 through the plurality of hooking pieces 4 can be firmly connected to the board holder 3 without leaving the circuit board 2.

  The electronic component 8 fixed to the circuit board 2 is a protection IC that realizes a protection circuit for the battery 1 or a semiconductor switching element such as an FET or a transistor that is switched by the protection IC. The electronic component 8 that realizes the protection circuit is charged / discharged when the semiconductor switching element is turned on / off by the protection IC so as to prevent the battery 1 from being overcharged or overdischarged, or when the temperature of the battery 1 becomes abnormally high. The battery 1 is charged or discharged while protecting or protecting the battery 1 by limiting or cutting off the current. These electronic components 8 are arranged on the back surface of the circuit board 2 and in a storage recess provided on the surface of the substrate holder 3 by being fixed between the hooking pieces 4. According to this structure, the electronic component 8 can be housed and protected in an area surrounded by the circuit board 2 and the board holder 3.

  The circuit board 2 is connected to the board holder 3 via the hooking pieces 4 and the hooking rails 5 so that the circuit board 2 can move in the lateral direction, that is, the short direction of the elongated circuit board 2. However, the circuit board 2 is not necessarily connected so as to be movable in the lateral direction of the substrate holder 3, and may be connected so as to be movable in the longitudinal direction, which is the longitudinal direction of the elongated circuit board, for example.

  The circuit board 2 is a hard insulating board such as a glass epoxy board or a phenol board. The circuit board 2 shown in the figure has an elongated rectangular shape substantially equal to the width and length of the facing surface of the battery 1. An electronic component 8 and a lead plate 9 are soldered and fixed to the circuit board 2. These are fixed by reflow soldering. The hook piece 4 is fixed together with the electronic component 8 by reflow soldering. When the hooking piece 4 is fixed by this method, a dedicated process for fixing the hooking piece 4 to the circuit board 2 is not required, and it can be manufactured efficiently. The hook piece 4 fixed by reflow soldering is entirely made of metal, or a portion fixed by soldering to the circuit board 2 is made of metal.

  Furthermore, the hooking piece 4 can also be composed of a lead plate 9 that connects the circuit board 2 to the battery 1 as shown in FIGS. 12, 23, and 33. According to this structure, since a part of the lead plate 9 is used together with the hooking piece 4, it is not necessary to fix the dedicated parts constituting the hooking piece 4 to the circuit board 2, and the structure can be further simplified.

  The battery pack shown in FIG. 2 has two hook pieces 4 fixed to the back side of the circuit board 2 as shown in FIGS. The hook piece 4 is fixed to both end portions of the elongated circuit board 2 by a method such as reflow soldering. However, the hooking piece 4 can be bonded and fixed to the circuit board 2. The hooking piece 4 in the figure has a hook shape with the tip bent outward. However, although not shown, the hooking piece can be formed in a hook shape in which the tip is bent inward. In the circuit board 2, the electronic component 8 is fixed to the back side between the hooks 4, and the lead plate 9 is fixed to the outside of the hooks 4 by soldering. The hook piece 4, the electronic component 8, and the lead plate 9 are fixed together by reflow soldering. Further, the output terminal 6 is fixed to the surface side of the circuit board 2. The output terminal 6 is exposed to the outside through a terminal window 7 that is open in the peripheral wall of the case 11. The output terminal 6 is connected to the battery 1 via the electronic component 8.

  The circuit board 2 having the above structure is connected to the board holder 3 having the structure shown in FIGS. The substrate holder 3 shown in these drawings is integrally formed of plastic as a whole. The substrate holder 3 is formed by integrally forming a hook rail 5 and a rib 13 on a rectangular surface plate 12 substantially equal to the outer shape of the circuit board 2. The rib 13 and the hooking rail 5 are formed so that their tips are located on the same plane. The ribs 13 are provided at both end edges of the surface plate 12 and further provided at part of both side edges. The ribs 13 on both side edges are provided at different positions on both ends so that the mold for molding the substrate holder 3 can be removed in the lateral direction. In FIG. 6, the ribs 13 on both side edges of the surface plate 12 are provided at the center and both ends of the upper edge, and are provided at the middle between the center and both ends of the lower edge.

  The hooking rail 5 has a hook shape formed by bending the tip portion to the opposite side so that the hook-shaped hooking piece 4 provided on the circuit board 2 can be hooked. Since two hook pieces 4 are provided on the circuit board 2, two hook rails 5 are provided at positions where the hook pieces 4 are locked. The hooking piece 4 is connected to the hooking rail 5 in a hooked state so that it can move along the hooking rail 5. The substrate holder 3 shown in the figure is provided with two rows of hooking rails 5 in parallel on a rectangular surface plate 12 so that the hooking pieces 4 can be hooked and moved in the horizontal direction.

  The circuit board 2 and the board holder 3 shown in these drawings are connected in the state shown in FIGS. That is, the hooking piece 4 of the circuit board 2 is hooked on the hooking rail 5 of the board holder 3, and the circuit board 2 is moved laterally as shown by the arrow in FIG. 9, and the circuit board 2 is connected to the board holder 3. Is done. In the connected state, the back surface side of the circuit board 2 comes into contact with the leading edge of the rib 13 of the substrate holder 3.

  The battery pack shown in FIG. 12 has two hook pieces 4 fixed to the back side of the circuit board 2 as shown in FIGS. In the circuit board 2 shown in these drawings, a part of the lead plate 9 is used together with the hook piece 4. Therefore, a dedicated part is not fixed as the hook piece 4. The lead plate 9 is fixed together with the electronic component 8 by a method such as reflow soldering. The circuit board 2 has a lead plate 9 made of a metal plate soldered and fixed to both ends thereof. The lead plate 9 is not fixed to the circuit board 2 at the tip, and is bent at a right angle in a direction away from the back side of the circuit board 2, and the tip is bent into an L shape to hook The hook 4 is in the shape of a ring. The lead plate 9 shown in FIG. 14 has its tips bent inward to form the hook piece 4, but as shown in FIG. 16, the tip can be bent outward to make the hook piece 4. The circuit board 2 shown in FIG. 13 to FIG. 15 also has an electronic component 8 fixed between hook pieces 4 formed of lead plates 9 fixed at both ends. Further, an output terminal 6 is fixed on the front surface side of the circuit board 2. The output terminal 6 is exposed to the outside through a terminal window opened in the peripheral wall of the case. The output terminal 6 is connected to the battery 1 via the electronic component 8.

  The circuit board 2 having the above structure is connected to the board holder 3 having the structure shown in FIGS. The whole substrate holder 3 shown in these figures is also integrally formed of plastic. The substrate holder 3 is formed by integrally forming a hook rail 5 and a rib 13 on a rectangular surface plate 12 substantially equal to the outer shape of the circuit board 2. The ribs 13 are provided at both end edges of the surface plate 12 and further provided at part of both side edges. The ribs 13 on both side edges are provided at different positions on both ends so that the mold for molding the substrate holder 3 can be removed in the lateral direction. In FIG. 17, the ribs 13 on both side edges of the surface plate 12 are provided at the center and both ends of the upper edge, and are provided at the middle between the center and both ends of the lower edge.

  The hooking rail 5 has a hook shape formed by bending the tip portion to the opposite side so that the hook-shaped hooking piece 4 provided on the circuit board 2 can be hooked. Since the circuit board 2 is provided with two hooking pieces 4, two hooking rails 5 are provided at positions where the hooking pieces 4 are locked. The hooking piece 4 is connected to the hooking rail 5 in a hooked state so that it can move along the hooking rail 5. The substrate holder 3 in the figure is provided with two rows of hooking rails 5 in parallel on a rectangular surface plate 12 so that the hooking pieces 4 can be hooked and moved in the horizontal direction. The hooking rail 5 is formed to a height at which the back side of the circuit board 2 is brought into contact with the surface of the rib 13 in a state where the hooking piece 4 of the circuit board 2 is hooked here.

  The circuit board 2 and the board holder 3 shown in these drawings are connected in the state shown in FIGS. That is, the hooking piece 4 of the circuit board 2 is hooked on the hooking rail 5 of the board holder 3 and the circuit board 2 is moved in the lateral direction as shown by the arrows in FIG. Is done. In the connected state, the back surface side of the circuit board 2 comes into contact with the leading edge of the rib 13 of the substrate holder 3.

  The battery pack shown in FIG. 23 has two hook pieces 4 fixed to the back side of the circuit board 2 as shown in FIGS. The circuit board 2 shown in these drawings also uses a part of the lead plate 9 together with the hook piece 4. Therefore, a dedicated part is not fixed as the hook piece 4. The lead plate 9 is fixed to the metal block 14 by welding. In order to weld the lead plate 9, the circuit board 2 is fixed by soldering the metal block 14. The metal block 14 is fixed together with the electronic component 8 by a method such as reflow soldering. The metal block 14 is fixed to both ends of the circuit board 2 by soldering using a method such as reflow soldering in order to connect the lead plate 9. The metal block 14 is made of a metal capable of welding the lead plate 9 such as a nickel block. The tip of the lead plate 9 is protruded from the surface of the metal block 14, and the lead plate 9 is fixed by a method such as spot welding. As shown in the partially enlarged view of FIG. 25, the hooking piece 4 is constituted by a portion where the lead plate 9 protrudes from the metal block 14. This circuit board 2 uses a part of the lead plate 9 for connecting the circuit board 2 to the battery 1 together with the hooking piece 4, so there is no need to fix a dedicated part as the hooking piece 4, and the structure and assembly Easy to do. An electronic component 8 is fixed between the metal blocks 14. Further, an output terminal 6 is fixed on the front surface side of the circuit board 2. The output terminal 6 is exposed to the outside through a terminal window opened in the peripheral wall of the case. The output terminal 6 is connected to the battery 1 via the electronic component 8.

  The circuit board 2 having the above structure is connected to the board holder 3 having the structure shown in FIGS. The whole substrate holder 3 shown in these figures is also integrally formed of plastic. The substrate holder 3 is formed by integrally forming a hook rail 5 and a rib 13 on a rectangular surface plate 12 substantially equal to the outer shape of the circuit board 2. The ribs 13 are provided at both end edges of the surface plate 12 and further provided at part of both side edges. The ribs 13 on both side edges are provided at different positions on both ends so that the mold for molding the substrate holder 3 can be removed in the lateral direction. In FIG. 27, ribs 13 on both side edges of the surface plate 12 are provided at the center and both ends of the upper edge, and are provided at the middle between the center and both ends of the lower edge.

  The hooking rail 5 has a hook shape formed by bending the tip portion to the opposite side so that the hook-shaped hooking piece 4 provided on the circuit board 2 can be hooked. Since the circuit board 2 is provided with two hooking pieces 4, two hooking rails 5 are provided at positions where the hooking pieces 4 are locked. The hooking piece 4 is connected to the hooking rail 5 in a hooked state so that it can move along the hooking rail 5. The substrate holder 3 in the figure is provided with two rows of hooking rails 5 in parallel on a rectangular surface plate 12 so that the hooking pieces 4 can be hooked and moved in the horizontal direction. The hooking rail 5 is formed to a height at which the back side of the circuit board 2 is brought into contact with the surface of the rib 13 in a state where the hooking piece 4 of the circuit board 2 is hooked here. The circuit board 2 and the board holder 3 shown in these figures are configured so that the hooking rail 5 is in contact with the back side of the circuit board 2 and the lead plate 9 is in contact with the tip of the rib 13. Since it is connected to the holder 3, the hook rail 5 is formed higher than the rib 13.

  The circuit board 2 and the substrate holder 3 shown in these drawings are connected in the state shown in FIGS. That is, the hooking piece 4 of the circuit board 2 is hooked on the hooking rail 5 of the board holder 3, and the circuit board 2 is moved in the lateral direction as shown by the arrows in FIG. Is done. In the connected state, the back surface side of the circuit board 2 comes into contact with the leading edge of the rib 13 of the substrate holder 3.

  As shown in FIGS. 34 to 36, the battery pack shown in FIG. 33 protrudes outward from the back surface side of the circuit board 2 and fixes two hooking pieces 4. The circuit board 2 shown in these figures also uses a part of the lead plate 9 that connects the circuit board 2 to the battery 1 in combination with the hook piece 4. Therefore, a dedicated part is not fixed as the hook piece 4. The lead plate 9 is fixed together with the electronic component 8 by a method such as reflow soldering. The circuit board 2 has a lead plate 9 made of a metal plate soldered and fixed to both ends thereof. The lead plate 9 uses protrusions protruding from both ends of the circuit board 2 together with the hooking piece 4. Therefore, the lead plate 9 is slightly bent from the circuit board 2 and then bent at a right angle. This circuit board 2 also has an electronic component 8 fixed between hook pieces 4 formed of lead plates 9 fixed at both ends. Further, an output terminal 6 is fixed on the front surface side of the circuit board 2. The output terminal 6 is exposed to the outside through a terminal window opened in the peripheral wall of the case. The output terminal 6 is connected to the battery 1 via the electronic component 8.

  The circuit board 2 having the above structure is connected to the board holder 3 having the structure shown in FIGS. The whole substrate holder 3 shown in these figures is also integrally formed of plastic. The substrate holder 3 is formed by integrally forming a hook rail 5 and a rib 13 on a rectangular surface plate 12 substantially equal to the outer shape of the circuit board 2. The ribs 13 are provided at both ends of the surface plate 12 and further provided at part of both side edges. The ribs 13 on both side edges are provided at different positions on both ends so that the mold for molding the substrate holder 3 can be removed in the lateral direction. In FIG. 37, the ribs 13 on both side edges of the surface plate 12 are provided at the center and both ends of the upper edge, and are provided at the middle between the center and both ends of the lower edge.

  The hook rail 5 is provided at both end edges of the surface plate 12. As shown in FIG. 39, the hook rail 5 is formed of ribs 13 provided at both end edges of the surface plate 12 so that the hook pieces 4 that protrude outward from both end edges of the circuit board 2 can be hooked. A locking hook is integrally formed at the tip. As shown in the drawing, this hook is connected to one side edge of the rib 13 and extends in the direction of the rib 13, and a slit 15 that guides the hooking piece 4 that is the lead plate 9 between the rib 13. Provided. Since the circuit board 2 is provided with the hooking pieces 4 made of the lead plates 9 at both ends, the hooking rails 5 are provided on the ribs 13 at both ends of the surface plate 12 so as to lock the hooking pieces 4. . The hooking piece 4 is connected to the hooking rail 5 in a hooked state so that it can move along the hooking rail 5. The substrate holder 3 shown in the figure has the slit 15 in the horizontal direction so that the hook piece 4 can be hooked and moved in the horizontal direction.

  The circuit board 2 and the board holder 3 shown in these drawings are connected in the state shown in FIGS. That is, as shown by the arrows in FIG. 41, the circuit board 2 is moved in the lateral direction so that the hooking pieces 4 made of the lead plates 9 projecting from the circuit board 2 at both ends are connected to the ribs 13 at both edges of the board holder 3. The circuit board 2 is connected to the board holder 3 by being guided by the slits 15 of the catch rail 5 provided at the tip. In the connected state, the back surface side of the circuit board 2 comes into contact with the leading edge of the rib 13 of the substrate holder 3.

1 is a perspective view of a battery pack according to an embodiment of the present invention. It is sectional drawing of the battery assembly of the battery pack concerning Example 1 of this invention. It is a top view of the circuit board of the battery pack concerning Example 1 of the present invention. FIG. 4 is a front view of the circuit board shown in FIG. 3. FIG. 4 is a bottom view of the circuit board shown in FIG. 3. It is a top view of the board | substrate holder of the battery pack concerning Example 1 of this invention. It is the front view which looked at the substrate holder shown in FIG. 6 from the direction shown by arrow B. It is AA sectional view taken on the line of the substrate holder shown in FIG. FIG. 7 is a plan view showing a state in which the circuit board shown in FIG. 3 is coupled to the board holder shown in FIG. 6. It is a top view which shows the state which connected the circuit board shown in FIG. 9, and a board | substrate holder. It is BB sectional drawing which shows the connection state of the circuit board shown in FIG. 10, and a board | substrate holder. It is sectional drawing of the battery assembly of the battery pack concerning Example 2 of this invention. It is a top view of the circuit board of the battery pack concerning Example 2 of the present invention. It is a front view of the circuit board shown in FIG. It is a bottom view of the circuit board shown in FIG. It is a side view which shows another example of a circuit board. It is a top view of the board | substrate holder of the battery pack concerning Example 2 of this invention. It is the front view which looked at the substrate holder shown in FIG. 17 from the direction shown by arrow B. It is AA sectional view taken on the line of the substrate holder shown in FIG. It is a top view which shows the state which connects the circuit board shown in FIG. 13 to the board | substrate holder shown in FIG. It is a top view which shows the state which connected the circuit board shown in FIG. 20 with the board | substrate holder. It is BB sectional drawing which shows the connection state of the circuit board shown in FIG. 21, and a board | substrate holder. It is sectional drawing of the battery assembly of the battery pack concerning Example 3 of this invention. It is a top view of the circuit board of the battery pack concerning Example 3 of the present invention. FIG. 25 is a partially enlarged front view of the circuit board shown in FIG. 24. FIG. 25 is a bottom view of the circuit board shown in FIG. 24. It is a top view of the board | substrate holder of the battery pack concerning Example 3 of this invention. It is the front view which looked at the substrate holder shown in FIG. 27 from the direction shown by arrow B. It is the sectional view on the AA line of the substrate holder shown in FIG. It is a top view which shows the state which connects the circuit board shown in FIG. 24 to the board | substrate holder shown in FIG. It is a top view which shows the state which connected the circuit board shown in FIG. 30 to the board | substrate holder. FIG. 32 is a partially enlarged cross-sectional view taken along line B-B showing a connection state between the circuit board and the substrate holder shown in FIG. 31. It is sectional drawing of the battery assembly of the battery pack concerning Example 4 of this invention. It is a top view of the circuit board of the pack battery concerning Example 4 of this invention. FIG. 35 is a partially enlarged front view of the circuit board shown in FIG. 34. FIG. 35 is a bottom view of the circuit board shown in FIG. 34. It is a top view of the board | substrate holder of the battery pack concerning Example 4 of this invention. It is the front view which looked at the substrate holder shown in FIG. 37 from the direction shown by arrow B. FIG. 38 is a side view of the substrate holder shown in FIG. 37. It is AA sectional view taken on the line of the substrate holder shown in FIG. It is a top view which shows the state which connects the circuit board shown in FIG. 34 to the board | substrate holder shown in FIG. It is a top view which shows the state which connected the circuit board shown in FIG. 41 to the board | substrate holder. FIG. 43 is a partially enlarged side view showing a connected state of the circuit board and the substrate holder shown in FIG. 42. FIG. 43 is a cross-sectional view taken along the line BB showing a connection state of the circuit board and the substrate holder shown in FIG. 1 is a perspective view of a battery pack according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Battery 2 ... Circuit board 3 ... Board holder 4 ... Hook piece 5 ... Hook rail 6 ... Output terminal 7 ... Terminal window 8 ... Electronic component 9 ... Lead plate 10 ... Battery assembly 11 ... Case 12 ... Surface plate 13 ... Rib 14 ... Metal block 15 ... Slit

Claims (7)

A battery (1), a circuit board (2) electrically connected to the battery (1), and a board holder (3) connecting the circuit board (2) in place, the circuit board ( 2) a battery pack connected to a fixed position via a substrate holder (3),
The circuit board (2) has a hook piece (4) fixed on one side, and the board holder (3) has a hook rail (5) that hooks and connects the hook piece (4). A battery pack in which the circuit board (2) is connected to the board holder (3) by connecting the circuit board (2) to the board holder (3) so that the circuit board (4) can be moved along the hook rail (5).   The circuit board (2) is provided with a plurality of hooking pieces (4), and the board holder (3) is provided with a plurality of hooking rails (5) for connecting the hooking pieces (4) in a posture parallel to each other. The battery pack according to claim 1.   The battery pack according to claim 1, wherein the hook piece (4) is a metal piece which is fixed by soldering to the circuit board (2).   The lead plate (9) is formed by soldering and securing the hook piece (4) to the circuit board (2) .The lead plate (9) is bent into a hook shape that is locked to the hook rail (5). The battery pack according to claim 1.   The metal block (14) is soldered and fixed to the circuit board (2), the lead plate (9) is fixed to the metal block (14), and the tip of the lead plate (9) is protruded and hooked. The battery pack according to claim 1, wherein the battery pack is a piece (4).   The battery pack according to claim 1, wherein the hook piece (4) is a lead plate (9) fixed so as to protrude outward from the circuit board (2). The battery pack according to claim 1, wherein the battery (1), the circuit board (2), and the board holder (3) are housed in a case (11).

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