JP2008159501A - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
JP2008159501A
JP2008159501A JP2006348875A JP2006348875A JP2008159501A JP 2008159501 A JP2008159501 A JP 2008159501A JP 2006348875 A JP2006348875 A JP 2006348875A JP 2006348875 A JP2006348875 A JP 2006348875A JP 2008159501 A JP2008159501 A JP 2008159501A
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JP
Japan
Prior art keywords
cover
substrate
cord
unit cell
connection cord
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2006348875A
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Japanese (ja)
Inventor
Osamu Akatsuchi
修 赤土
Original Assignee
Hitachi Maxell Ltd
日立マクセル株式会社
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Publication date
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Priority to JP2006348875A priority Critical patent/JP2008159501A/en
Publication of JP2008159501A publication Critical patent/JP2008159501A/en
Withdrawn legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Abstract

A battery pack capable of preventing a connection cord covering from being deteriorated by heat of molten resin and preventing a short circuit between conductors of positive and negative connection cords is obtained.
A unit cell, a connection cord, a substrate disposed on an outer surface of the unit cell and to which a conductive wire at a proximal end of the connection cord is joined, and a resin formed on the outer surface of the unit cell. And a mold 6. The back surface side of the substrate 12 is connected to the unit cell 2, and the front surface side of the substrate 12 is joined to the conductive wire 13 of the connection cord 5, so that the connection cord 5 and the unit cell 2 are conducted through the substrate 12. A flat cover 20 is disposed on the front surface side of the substrate 12, and a recess 30 for accommodating the proximal end side of the connection cord 5 is formed on the back surface side of the cover 20. On the surface side of the cover 20, there is a cord insertion hole 29 for leading the distal end side of the connection cord 5 from the concave portion 30 of the cover 20 to the outside. In this state, the back side of the cover 20 is integrated with the unit cell 2 together with the back side of the substrate 12 by the resin mold 6.
[Selection] Figure 1

Description

  The present invention provides a connection cord for connection to an external device on the outer peripheral surface of a unit cell with the positive side connection cord connected to the positive electrode of the unit cell and the negative side connection cord connected to the negative electrode of the unit cell. The present invention relates to a battery pack for forming a resin mold.

  Patent Document 1 discloses a battery in which an electrical component such as a circuit board is disposed on the outer peripheral surface of a unit cell, and the electrical component and the connection cord are integrated into the unit cell by a resin mold in a state where the connection cord is joined to the circuit substrate. A pack is disclosed.

  That is, in Patent Document 1, a unit cell in which an electrical component and a connection cord are arranged in advance is mounted in a mold, and the connection cord is drawn out of the mold from a cord extraction groove provided in the mold. In this state, molten resin is injected into the mold, and a resin mold is formed on the outer peripheral surface of the unit cell.

JP 2000-315483 A (FIGS. 1-4)

  If the molten resin comes into contact with the connection cord during molding of the resin mold, the coating of the connection cord is altered by the heat of the molten resin, and the positive connection cord and the negative connection cord are short-circuited. There is a problem where there is a fear.

  Further, in the molded battery pack, for example, if the connection cord is accidentally strongly pulled, the connection cord may be peeled off from the substrate of the electrical component and come out of the battery pack.

  Accordingly, an object of the present invention is to provide a battery pack capable of preventing the connection cord coating from being altered by the heat of the molten resin for molding a resin mold and short-circuiting between the positive-side connection cord and the negative-side connection cord. Is to provide. In addition, an object of the present invention is to provide a battery pack that can securely fix a connection cord to the battery pack.

  The battery pack 1 according to the present invention includes a unit cell 2, a connection cord 5 for connecting an external device to the unit cell 2, and a conductor 13 that is disposed on the outer surface of the unit cell 2 and is exposed at the base end of the connection cord 5. And a resin mold 6 that is formed on the outer surface of the unit cell 2 and integrates the substrate 12 into the unit cell 2, and the substrate 12 is the back side of the substrate 12 facing the unit cell 2. The side is connected to the unit cell 2, the surface side of the substrate 12 is joined to the conducting wire 13 of the connection cord 5, and the connection cord 5 and the unit cell 2 are electrically connected via the substrate 12, A flat cover is disposed, and a recess 30 is formed on the back side of the cover facing the substrate 12 to accommodate the proximal end side of the connection cord 5 connected to the substrate 12. On the front side, a connection cord is provided from the recess 30 of the cover to the outside. 5, a cord lead-out portion for leading out the front end side of the cover 5, and the back side of the cover is covered together with the back side of the substrate 12 by the resin mold 6 in a state where the opening of the concave portion 30 of the cover is closed by the substrate 12. The first feature is that the battery 2 is integrated.

  A second feature of the battery pack according to the present invention is that, in addition to the first feature, a holder 19 that accommodates the substrate 12 is provided, and the cover 20 is engaged with the holder 19 by the locking means 31 and 32. The holder 19 is integrated with the unit cell 2 together with the substrate 12 and the cover 20 by the resin mold 6 (FIG. 1).

  A third feature of the battery pack according to the present invention is that, in addition to the second feature, a protrusion 35 protruding toward the substrate 12 is provided in the recess 30 of the cover 20. The connection cord 5 is sandwiched and fixed.

  The fourth feature of the battery pack according to the present invention includes, in addition to the first feature, a cord holder 40 that retains the base end side of the connection cord 5 in a shape-retained state, and the cord holder 40 is formed so that the conducting wire 13 of the connection cord 5 is led out to the outside, and the cord holder 40 is housed in the recess 30 of the cover 43 together with the base end side of the connection cord 5. In the state where the opening of the recess 30 is closed by the substrate 12, the back surface side of the cover 43 is integrated with the unit cell 2 together with the back surface side of the substrate 12 by the resin mold 6 (FIG. 11).

  A fifth feature of the battery pack according to the present invention is that, in addition to the fourth feature, the cord holder 40 holds a part of the base end side of the connection cord 5 in an exposed state. In the recess 30, a protrusion 47 facing a part of the connection cord 5 in the cord holder 40 is provided, and the connection cord 5 is sandwiched and fixed between the protrusion 47 and the cord holder 40.

  The sixth feature of the battery pack according to the present invention includes, in addition to the first feature, a cord holder 50 that holds the base end side of the connection cord 5 in a shape-retained state, and the cord holder 50 is formed so that the conducting wire 13 of the connecting cord 5 is led out to the outside, and the cord holder 50 and the cover 51 are locked to the substrate 12 by the locking means 57, 59, 60, The cord holder 50 is accommodated in the concave portion 30 of the cover 51 together with the proximal end side of the connection cord 5, and the opening of the concave portion 30 of the cover 51 is closed by the cord holder 50 and the substrate 12. The back side of the cover 51 is integrated with the unit cell 2 together with the cord holder 50 and the back side of the substrate 12 by the resin mold 6 (FIG. 15).

  A seventh feature of the battery pack according to the present invention is that, in addition to the sixth feature, the cord holder 50 has the base end side of the connection cord 5 directly facing the inner surface of the cover 51, and the concave portion 30 of the cover 51. Inside, a projection 63 facing the connection cord 5 held by the cord holder 50 is provided, and the connection cord 5 is sandwiched and fixed between the projection 63 and the cord holder 50.

  The eighth feature of the battery pack according to the present invention is that, in addition to the first feature, the cover 20 is locked to the substrate 12 by the locking means 31 (FIG. 20).

  A ninth feature of the battery pack according to the present invention is that, in addition to the eighth feature, a protrusion 35 protruding toward the substrate 12 is provided in the recess 30 of the cover 20. The connection cord 5 is sandwiched and fixed.

  In the battery pack according to the present invention, since the opening of the concave portion 30 of the cover is closed with the substrate 12, the back side of the cover is integrated with the unit cell 2 together with the back side of the substrate 12 by the resin mold 6. When the 6 is formed by the mold 39 (FIG. 6), the molten resin is prevented from flowing into the recess 30 of the cover. Therefore, the base end side of the connection cord 5 accommodated in the concave portion 30 of the cover is suppressed from being covered with the molten resin, and the resin covering the conductive wire 13 on the base end side of the connection cord 5 is altered by the heat of the molten resin. Thus, for example, the lead wires 13 and 13 of the positive and negative connection cords 5a and 5b are reliably prevented from contacting each other. That is, even if an expensive heat-resistant resin is not used as the resin for covering the conductive wire 13 of the connection cord 5, the resin that covers the conductive wire 13 of the connection cord 5 is prevented from being deteriorated by the heat of the molten resin. Only the cost required for the connection cord 5 can be reduced.

  In the present invention, since the cover 20 is locked to the holder 19 that accommodates the substrate 12, the substrate 12 can be easily positioned with respect to the cover 20, and when the resin mold 6 is formed, the cover recess 30 is formed. The molten resin can be more reliably prevented from flowing into the inside, and the resin that covers the conductive wire 13 on the proximal end side of the connection cord 5 is altered by the heat of the molten resin, so that the conductive wires 13 and 13 of the positive and negative connection cords 5a and 5b. It is possible to more reliably prevent contact between the two.

  In the present invention, since the connection cord 5 is sandwiched and fixed by the projection 35 in the recess 30 of the cover 20 and the substrate 12, the connection cord 5 that is not integrated into the unit cell 2 by the resin mold 6 is strong. Even when pulled, the connection cord 5 can be prevented from being peeled off from the battery pack 1.

  In the present invention, since the cord holding tool 40 that holds the base end side of the connection cord 5 in a shape-retained state is provided, the connection cord 5 that is flexible because it is flexible can be easily and reliably joined to the substrate 12. Thus, the battery pack 1 of the present invention can be easily manufactured.

  In the present invention, since the connection cord 5 is sandwiched and fixed by the projection 47 in the recess 30 of the cover 43 and the cord holder 40, even if the connection cord 5 is pulled strongly, the connection cord 5 remains in the battery pack 1. It can be prevented from peeling off.

  In the present invention, the cord holder 50 that holds the base end side of the connection cord 5 in a shape-retained state is provided, and the cord holder 50 and the cover 51 are locked and integrated with the substrate 12, so that the flexible Therefore, the connecting cord 5 which is easy to bend can be easily and reliably joined to the substrate 12, and the positioning of the cord holder 50, the cover 51 and the substrate 12 can be facilitated. While being able to produce easily, when forming the resin mold 6, it can prevent more reliably that molten resin flows in into the dent 30 of the cover.

  In the present invention, since the connection cord 5 is sandwiched and fixed by the projection 63 in the recess 30 of the cover 51 and the cord holder 50, even if the connection cord 5 is pulled strongly, the connection cord 5 remains in the battery pack 1. It can be prevented from peeling off.

  In the present invention, since the cover 20 is locked to the substrate 12, the substrate 12 can be easily positioned with respect to the cover 20, and when the resin mold 6 is formed, molten resin is formed in the recess 30 of the cover. The resin that covers the conductive wire 13 on the proximal end side of the connection cord 5 is changed by the heat of the molten resin, and the conductive wires 13 and 13 of the positive and negative connection cords 5a and 5b come into contact with each other. This can be prevented more reliably.

  In the present invention, since the connection cord 5 is sandwiched and fixed between the projection 35 in the recess 30 of the cover 20 and the substrate 12, the connection cord 5 is peeled off from the battery pack 1 even if the connection cord 5 is pulled strongly. Is suppressed.

  1 to 8 show an embodiment of a battery pack targeted by the present invention. As shown in FIGS. 1 and 2, the battery pack 1 includes a flat square box-shaped unit cell 2 and a unit cell. The electrical component 3 disposed on the outer surface of the battery 2, the connection cord 5 for connecting an external device or the like to the unit cell 2, and the electrical component 3 formed on the outer surface of the unit cell 2 are integrated with the unit cell 2. And a resin mold 6.

  As shown in FIGS. 3 and 4, the upper and lower surfaces of the unit cell 2 are formed to be substantially flat, and the front and rear thickness dimensions are smaller than the upper and lower height dimensions and the left and right width dimensions. As shown in FIG. 2, the resin mold 6 covers the electrical component 3, the upper and lower outer peripheral surfaces of the unit cell 2, and the peripheral portions of the front and rear surfaces of the unit cell 2, and is molded from a resin such as polyamide. The The resin mold 6 insulates the electrical component 3 from the outside and protects the electrical component 3 and the unit cell 2 from interference with other objects.

  The unit cell 2 is a secondary battery that can be charged and discharged, specifically a lithium ion battery, in which an electrode body, an electrolytic solution, and the like are enclosed. The unit cell 2 has an outer can 7 formed by deep-drawing a plate made of aluminum or an alloy thereof so that only the upper surface is opened, and a sealing plate 9 that closes the upper open surface of the outer can 7. The sealing plate 9 is formed by pressing a plate material such as an aluminum alloy, and is seam welded to the periphery of the opening of the outer can 7 by a laser. A negative electrode terminal 10 is provided at the center of the sealing plate 9 in the left-right direction, and an explosion-proof valve 11 is formed on one side (left side in FIG. 4) of the upper surface of the sealing plate 9.

The electrode body is formed by spirally winding a positive electrode sheet using LiCoO 2 as an active material and a negative electrode sheet using graphite as an active material with a synthetic resin separator sandwiched between them. ing. The explosion-proof valve 11 is broken to release the battery internal pressure when the battery internal pressure becomes excessively high due to overcharge or the like.

  As shown in FIGS. 3 and 4, the electrical component 3 includes a horizontally long board 12 disposed on the upper surface side of the outer surface of the unit cell 2, and a thermal fuse 15 disposed on the lower surface side of the unit cell 2. A strip-shaped long lead piece 16 connecting the substrate 12 and the thermal fuse 15, a strip-shaped short lead piece 17 connecting the negative electrode terminal 10 of the unit cell 2 and the substrate 12, and the substrate 12 are accommodated. And a flat cover 20 that covers the holder 19 and the upper side of the substrate 12. The holder 19 and the cover 20 are each formed of polycarbonate having excellent mechanical strength and insulation.

  The long lead piece 16 is joined to one end portion (left end portion in FIG. 3) on the lower surface (back surface) side of the substrate 12 in a state of being bent in an inverted L shape, and the short lead piece 17 is J-shaped. And is joined to the other end (the right end in FIG. 3) on the lower surface (back surface) side of the substrate 12. Both lead pieces 16 and 17 are formed by cutting a thin sheet of conductive metal such as nickel into a strip shape. The long lead piece 16 is affixed to the left lateral side surface 2 a of the unit cell 2 via an insulating double-sided tape 21. The upper end portion of the double-sided tape 21 is bent and attached to the upper surface side of the unit cell 2 so as to cover the upper side of the explosion-proof valve 11, and the holder 19 is attached to the upper surface of the unit cell 2 via the double-sided tape 21. It is pasted. The lower end portion of the double-sided tape 21 is bent to the lower surface side of the unit cell 2 and attached to the lower surface of the unit cell 2. The holder 19 also serves as a vent cover that covers the upper side of the explosion-proof valve 11.

  The connection cord 5 includes a pair of positive and negative cords 5a and 5b having a predetermined length, and a connector 22 arranged at the free ends (upper side in FIG. 4) of both cords 5a and 5b. Conductive wires 13 and 13 exposed at their base ends are soldered and joined to a pair of lands 23 and 23 disposed near the right end on the upper surface (front surface) side of the substrate 12, respectively. One cord 5a is shorter than the other cord 5b, and each land 23 is arranged at a position corresponding to the length of each cord 5a, 5b. The substrate 12 has a protection circuit or the like that limits the charging / discharging current of the unit cell 2, and each cord 5 a and 5 b of the connection cord 5 is connected to each lead via the land 23 and 23 of the substrate 12 and the protection circuit. Conductive to the pieces 16 and 17 respectively. Each lead piece 16 and 17 is electrically connected to the unit cell 2.

  The holder 19 is formed horizontally long in the left-right direction, and is arranged along the horizontally long upper surface of the unit cell 2. The holder 19 has a bottom wall 25 facing the upper surface of the unit cell 2 and both front and rear walls 26 and 26 projecting upward from both front and rear ends of the bottom wall 25. The substrate 12 is accommodated in the holder 19 sandwiched between the front and rear walls 26 and 26. A terminal insertion hole 27 through which the negative electrode terminal 10 is inserted is formed at the center in the left-right direction of the bottom wall 25 of the holder 19.

  The cover 20 is formed horizontally long in the left-right direction. As shown in FIGS. 1 and 5, the connection cord 5 is connected to one end portion (left end portion in FIG. 1) on the upper surface (front surface) side of the cover 20. A pair of front and rear cord insertion holes (code outlet portions) 29 through which the respective cords 5a and 5b are inserted in the vertical direction are formed. A recess 30 extending in the left-right direction is formed on the lower surface (back surface) of the cover 20, and both cords 5 a of the connection cord 5 soldered and connected to the lands 23, 23 of the substrate 12 in the recess 30. -The base end side of 5b is accommodated. As a result, the cords 5a and 5b and the cover 20 do not interfere with each other. The base end sides of both cords 5a and 5b of the connecting cord 5 are bent in an L shape. The distal end side of the connection cord 5 is led out from the concave portion 30 of the cover 20 to the outside through the cord insertion hole 29. The lower surface of the recess 30 of the cover 20 is closed by the upper surface of the substrate 12.

  As shown in FIGS. 3 and 4, four locking claws (locking means) 31 protrude downward from the left and right sides of the front and rear edges of the lower surface of the cover 20, respectively. On the inner surface side of the lower end of each locking claw 31, a flange portion 31a bulges out. The front and rear walls 26, 26 of the holder 19 are provided with convex engagement holes (locking means) 32 for locking the flanges 31a of the locking claws 31 of the cover 20 on the left and right sides, respectively. It has been. Then, the cover 20 is temporarily fixed to the holder 19 by locking the locking claws 31 of the cover 20 to the engagement holes 32 of the holder 19. By forming each engagement hole 32 in a convex shape, the molten resin that forms the resin mold 6 flows into the narrow upper portion of each engagement hole 32, and the center portion of the flange 31 a of each locking claw 31. By closely contacting, the cover 20 can be reliably prevented from coming off.

  On the upper surface of the recess 30 of the cover 20 and in the vicinity of the right side of the cord insertion hole 29, as shown in FIGS. 1 and 4, projections 35 for pressing the cords 5a and 5b of the connection cord 5 from above are respectively downward. It protrudes. When the board 12 is fitted into the holder 19 and the respective locking claws 31 of the cover 20 are locked in the respective engagement holes 32 of the holder 19, both the cords 5a and 5b of the connection cord 5 are connected to the projection 35 and the board. 12 and is fixed in a retaining shape.

  An electronic component such as an IC chip is disposed on the left half of the substrate 12, and the left half of the substrate 12 is thicker than the right half. A pair of left and right resin flow holes 36 are formed in the front and rear walls 26 and 26 of the holder 19, respectively. When the resin mold 6 is molded, the molten resin flows into the resin flow holes 36 of the holder 19 and solidifies, so that the holder 19 is difficult to be removed from the resin mold 6. The thermal fuse 15 is provided to cut off the charging / discharging current of the unit cell 2 when the temperature of the unit cell 2 exceeds a set value. One terminal plate 15 a of the thermal fuse 15 is connected to the lower end of the long lead piece 16, and the other terminal plate 15 b of the thermal fuse 15 is connected to the lower surface of the unit cell 2. An insulating seal 38 (FIG. 4) is affixed to the upper surface of the sealing plate 9 of the unit cell 2. When the unit cell 2 is transported by the insulating seal 38 alone, the adjacent negative electrode terminal 10 and A short circuit with the sealing plate 9 is prevented.

  An intermediate assembly 37 (see FIG. 6) is manufactured by temporarily assembling the electrical component 3 on the outer peripheral surface of the unit cell 2. The assembly procedure of the intermediate assembly 37 will be described. First, the upper end portion of the long lead piece 16 is provided at the left end portion of the lower surface of the substrate 12, and the one end portion of the short lead piece 17 is provided at the right end portion of the lower surface of the substrate 12 with a laser or the like. Welding (joining) and welding one terminal plate 15a of the thermal fuse 15 to the lower end of the long lead piece 16 (see FIGS. 3 and 5). Note that terminal plates 15 a and 15 b are respectively joined to the thermal fuse 15 in advance.

  Subsequently, a double-sided tape 21 is applied along the left lateral surface 2 a of the unit cell 2, the left half of the sealing plate 9, and the left half of the bottom surface of the unit cell 2. The holder 19 is affixed to the tape portion affixed to the insulating seal 38 above. Next, after the other end portion of the short lead piece 17 is welded to the negative electrode terminal 10 of the unit cell 2 inserted through the terminal insertion hole 27 of the holder 19, the short lead piece 17 is bent into a J shape, and the substrate 12 is held in the holder. It fits in 19 and is accommodated (see FIG. 1).

  Next, in the double-sided tape 21, the long lead piece 16 is attached to the tape part attached to the left lateral surface 2a of the unit cell 2, and the thermal fuse 15 is attached to the tape part attached to the lower surface of the unit cell 2. On the other hand, the lower end of the long lead piece 16 and one terminal 15a of the thermal fuse 15 are bent into an L shape, and the other terminal plate 15b of the thermal fuse 15 is welded to the lower surface of the unit cell 2. Thereafter, the conductors 13 and 13 of the cords 5 a and 5 b are soldered to the lands 23 of the substrate 12 in a state where the cords 5 a and 5 b of the connection cord 5 are respectively passed through the cord insertion holes 29 of the cover 20. Next, the cords 5a and 5b are bent in an L shape, the respective locking claws 31 of the cover 20 are locked in the respective engagement holes 32 of the holder 19, and the cover 20 is temporarily fixed to the holder 19 to perform intermediate assembly. Product 37 is completed.

  Thereafter, the resin mold 6 is formed on the intermediate assembly 37 using the mold 39 shown in FIG. The mold die 39 is formed with a cord lead-out groove 48 for drawing out the connection cord 5 from the die 39, and faces the side surface of the intermediate assembly 37 mounted in the die 39 so as to face the molten resin. An injection gate (not shown) is provided.

  When the intermediate assembly 37 is mounted in the mold 39, the molding die 39 is arranged so that the outer surface of the cover 20 of the intermediate assembly 37 is substantially in close contact with the inner surface of the mold 39 as shown in FIG. 6. Thus, the molten resin injected into the mold 39 from the gate is prevented from flowing around the outer surface side of the cover 20 and flowing to the cord drawing groove 48 side.

  Then, the intermediate assembly 37 is mounted in the mold 39, and molten resin is injected into the mold 39 from the gate, so that the molten resin is formed on the upper, lower, left and right outer peripheral surfaces of the electrical component 3 and the unit cell 2. The resin mold 6 is formed by solidifying the battery 2 so as to cover the peripheral portions of the front and rear surfaces of the battery 2. At that time, as shown in FIGS. 7 and 8, the molten resin is in each engagement hole 32 of the holder 19 and above the engagement position of the flange 31 a of each engagement claw 31 and each resin circulation hole. It also flows into the holder 19 via 36 or the like. As a result, the resin mold 6 covering the unit cell 2 is in close contact with the peripheral portion of the lower surface (back surface) of the cover 20, is in close contact with the peripheral portion of the lower surface (back surface) of the substrate 12, and is in close contact with the holder 19. The holder 19, the lower surface side of the cover 20, and the lower surface side of the substrate 12 are firmly integrated with the unit cell 2 by the resin mold 6, and the resin mold 6 reliably prevents the cover 20 from coming off. The intermediate assembly 37 is positioned in the mold 39 by a pin (not shown) or the like.

  On the other hand, since the lower surface opening of the recess 30 of the cover 20 is closed by the substrate 12, the molten resin is prevented from flowing into the recess 30 of the cover 20, and the connection cord 5 is shown in FIGS. Both cords 5a and 5b are not covered with molten resin. Therefore, it is possible to prevent the resin covering the conductive wires 13 and 13 at the base ends of the cords 5a and 5b of the connection cord 5 from being deteriorated by the heat of the molten resin. By forming the resin mold 6 on the intermediate assembly 37, the battery pack 1 of FIG. 2 is completed. A label 33 on which predetermined matters and the like are printed is attached to the outer peripheral surface of the completed battery pack 1 so as to be wound in the left-right direction. Then, the unit cell 2 is discharged or charged by connecting the connector 22 of the connection cord 5 to a terminal of an external device or a charger.

  9 to 14 show another embodiment of the battery pack targeted by the present invention. In the battery pack 1 of this embodiment, the holder 19 for housing the substrate 12 is omitted, and the lower portions of both the cords 5a and 5b of the connection cord 5 are held (shaped) by the cord holder 40. Yes. As shown in FIGS. 11 and 12, the cord holder 40 is formed horizontally long in the left-right direction, and is arranged at one end portion (left end portion in FIG. 12) of the cord holder 40, as shown in FIGS. 9 and 12. As shown, a pair of front and rear cord insertion holes (code lead-out portions) 41 through which the cords 5a and 5b of the connection cord 5 are inserted vertically are formed, and are connected to the outside from the recess 30 of the cover 43 by the cord insertion holes 41. The leading end side of the cord 5 is derived.

  The cord holder 40 extends in the left-right direction from the lower end of each cord insertion hole 41 to the other end (the right end in FIG. 12), and a pair of front and rear cord fittings in which the cords 5a and 5b of the connection cord 5 are fitted respectively. A joint groove 42 is formed. Each cord fitting groove 42 includes a downward groove portion 42a extending from the lower end of the cord insertion hole 41 to the center in the left-right direction of the cord holder 40, and an upward groove portion 42b extending to the right end of the cord holder 40 connected to the downward groove portion 42a. Consists of. Each downward groove 42a is open on the lower surface side as shown in FIG. 13, and each upward groove 42b is open on the upper surface side as shown in FIG.

  Then, as shown in FIG. 12, the lower portions of the cords 5a and 5b of the connecting cord 5 are passed through the cord insertion holes 41 of the cord holder 40 and then bent into an L shape so that the cord fitting groove 42 faces downward. It arrange | positions in the left-right direction along the groove part 42a and the upward groove part 42b. At this time, the conducting wires 13 and 13 at the tips of the cords 5 a and 5 b of the connection cord 5 are led out to the outside of the cord holder 40. As shown in FIG. 11, the cord holder 40 has a front portion where the shorter one of the cords 5 a and 5 b of the connecting cord 5 is disposed, and a rear portion where the other longer cord 5 b is disposed. It is shorter in the left-right direction than the side part. Since the cords 5a and 5b of the connection cord 5 are separately arranged in the groove portions 42a and 42b of the cord fitting groove 42 of the cord holder 40, the conducting wires 13 and 13 exposed at the tips of the cords 5a and 5b are arranged. It is possible to prevent contact between the two.

  As shown in FIGS. 11 and 12, the flat cover 43 is formed with a fitting port 45 formed horizontally in the left-right direction at one end portion (left end portion in FIG. 11). The left side portion of the cord holder 40 is fitted into. In this state, the distal end side of the connection cord 5 is led out from the concave portion 30 of the cover 43 to the outside on the upper surface (front surface) side of the cover 43 through the cord insertion hole 41. A recess 30 extending in the left-right direction is formed on the lower surface of the cover 43 in the same manner as the cover 20 of FIG. 4, and the proximal end sides of the cord holder 40 and the cords 5a and 5b of the connection cord 5 are formed in the recess 30 It is accommodated (see FIG. 9).

  The lower surface of the recess 30 of the cover 43 is closed by the upper surface of the substrate 12 (see FIGS. 13 and 14). Four locking claws 46 protrude downward from the left and right sides of the front and rear edges of the lower surface of the cover 20, and a flange 46 a bulges on the inner surface of the lower end of each locking claw 46. The cover 43 is temporarily fixed to the substrate 12 by the hook portions 46a of the respective locking claws 46 of the cover 43 being locked to the lower surface of the substrate 12 (see FIG. 13). On the outer surface side of the lower end of each locking claw 46, a convex portion 46b (FIG. 11) bulges out. The protrusion 46b further prevents the cover 43 from coming off from the resin mold 6.

  As shown in FIGS. 9 and 12, a pair of front and rear projections 47 are formed in a horizontally long manner on the upper surface of the recess 30 of the cover 43 and facing the upward groove 42 b of the cord holder 40. . When the locking claws 46 of the cover 43 are locked to the substrate 12, both the cords 5a and 5b of the connection cord 5 are sandwiched between the projection 47 of the cover 43 and the cord holder 40 and fixed in a retaining shape. . In this embodiment, the explosion-proof valve 11 is formed on the right side of the upper surface of the sealing plate 9 in the unit cell 2, and the upper side of the explosion-proof valve 11 is covered with an insulating flat plate-shaped vent cover 49.

  Explaining the assembly procedure of the intermediate assembly of the battery pack 1 of this embodiment, the upper end portion of the long lead piece 16 and the one end portion of the short lead piece 17 are respectively welded to the lower surface of the substrate 12 as in FIG. One terminal plate 15 a of the thermal fuse 15 is welded to the lower end portion of the long lead piece 16. And the vent cover 49 is affixed on the upper side of the explosion-proof valve 11 of the unit cell 2, and the double-sided tape 21 is affixed along the left side surface 2 a of the unit cell 2.

  Further, the cords 5a and 5b of the connecting cord 5 are respectively passed through the cord insertion holes 41 and the cord fitting grooves 42 of the cord holder 40, and the leading ends of the cords 5a and 5b protrude to the right side of the cord holder 40. (State shown in FIG. 12). And after soldering the conducting wires 13 and 13 of the cords 5a and 5b to the lands 23 of the substrate 12, respectively, the hook portions 46a of the locking claws 46 of the cover 43 are respectively locked to the lower surface of the substrate 12, The cover 43 is temporarily fixed to the substrate 12.

  Next, after the other end portion of the short lead piece 17 is welded to the negative electrode terminal 10 of the unit cell 2, the short lead piece 17 is bent into a J shape and is long on the double-sided tape 21 on the left lateral side surface 2 a of the unit cell 2. While the lead piece 16 is attached and the temperature fuse 15 is attached to the lower surface of the unit cell 2, the lower end portion of the long lead piece 16 and one terminal 15 a of the temperature fuse 15 are bent into an L shape, and the other end of the temperature fuse 15 is bent. The terminal plate 15b is welded to the lower surface of the unit cell 2 to complete the intermediate assembly. Thereafter, the resin mold 6 is formed on the intermediate assembly using the molding die 39 shown in FIG. 6 to complete the battery pack 1 shown in FIG.

  That is, the cord holder 40 is housed in the concave portion 30 of the cover 43 together with the base ends of the cords 5 a and 5 b of the connection cord 5, and the opening of the concave portion 30 of the cover 43 is blocked by the substrate 12. Thus, the resin mold 6 covering the unit cell 2 is in close contact with the peripheral portion of the lower surface (back surface) of the cover 43 and in close contact with the lower surface (back surface) of the substrate 12. It is integrated with the unit cell 2 together with the lower surface side. A label 33 on which predetermined matters and the like are printed is attached to the outer peripheral surface of the completed battery pack 1 so as to be wound up and down.

  Also in this embodiment, since the lower surface of the recess 30 of the cover 43 is blocked by the upper surface of the substrate 12, the molten resin is prevented from flowing into the recess 30 of the cover 43, and the connection is made as shown in FIGS. Both cords 5a and 5b of the cord 5 are not covered with molten resin. Therefore, it is possible to prevent the resin covering the conductive wires 13 and 13 of both the cords 5a and 5b of the connection cord 5 from being deteriorated by the heat of the molten resin.

  15 to 19 show another embodiment of the battery pack targeted by the present invention. In the battery pack 1 of this embodiment, a cord holder 50 that holds the base ends of both the cords 5a and 5b of the connection cord 5 is locked to the substrate 12, and the cord holder 50 has a flat shape. The cover 51 is locked. As shown in FIGS. 16 and 17, the cord holder 50 is formed horizontally long in the left-right direction, and each cord of the connection cord 5 is connected to one end portion (left end portion in FIG. 16) of the cord holder 50. A pair of front and rear cord guide grooves (code lead-out portions) 52 and 52 for bending and guiding 5a and 5b in an L shape from the vertical direction to the left and right direction are formed. Each cord guide groove 52 is open on the upper surface side. The conducting wires 13 and 13 exposed at the ends of both the cords 5a and 5b of the connection cord 5 are led out to the outside of the cord holder 50.

  Each cord guide groove 52 of the cord holder 50 is connected to a pair of front and rear cord fitting grooves 55 and 55 via a recess 53 formed in the center of the upper surface of the cord holder 50 in the left-right direction. The cord fitting groove 55 extends to the other end (right end in FIG. 16) of the cord holder 50. The concave portion 53 of the cord holder 50 and each cord fitting groove 55 are open on the upper surface side. As shown in FIG. 16, the cord holder 50 has a front portion in which one of the short cords 5 a of the two cords 5 a and 5 b of the connection cord 5 is disposed, and a rear portion in which the other cord 5 b is disposed. It is shorter in the left-right direction than the side portion, and prevents the wires 13 and 13 of the cords 5a and 5b of the connection cord 5 from contacting each other.

  A recess 30 extending in the left-right direction is formed on the lower surface (back surface) of the cover 51 in the same manner as the cover 20 in FIG. 1, and the cord holder 50 and the cords 5 a and 5 b of the connection cord 5 are formed in the recess 30. The proximal side is accommodated. The lower surface of the recess 30 is closed by the upper surfaces of the cord holder 50 and the substrate 12.

  The cover 51 is formed with a pair of front and rear engaging groove portions (cord leading portions) 56 and 56 facing the respective code guide grooves 52 of the cord holder 50 at one end portion (left end portion in FIG. 16). The engagement grooves 56 and 56 and the cord guide grooves 52 and 52 of the cord holder 50 sandwich the lower portions of the cords 5a and 5b of the connecting cord 5 so that the cords 5a and 5b are L-shaped in the vertical direction from the vertical direction. Bend and guide to the shape. That is, from the concave portion 30 of the cover 43 via the cord lead-out portion on the upper surface (front surface) side of the cover 51 formed by the engagement groove portions 56 and 56 of the cover 51 and the cord guide grooves 52 and 52 of the cord holder 50. The leading end side of the connection cord 5 is led out to the outside.

  As shown in FIGS. 16 and 17, six locking claws (locking means) 57 project downward from the left and right sides of the front and rear edges of the lower surface of the cover 51, respectively. A flange portion 57 a bulges out on the inner surface of the lower end of each locking claw 57, and among the locking claws 57 of the cover 51, the flange portions 57 a of the five locking claws 57 are front and rear of the lower surface of the cord holder 50 The cover 51 is temporarily fixed to the cord holder 50 by being respectively locked by five locking protrusions (locking means) 59 bulging out on both edges. At the same time, the width of the collar portion 57a of the latching claw 57 is made larger than the width of the latching convex portion 59, and the molten resin forming the resin mold 6 flows into the protruding portions at both ends of the collar portion 57a. By closely contacting, the cover 51 can be reliably prevented from coming off.

  Five locking claws (locking means) 60 protrude downward on both front and rear edge sides of the lower surface of the cord holder 50, and a flange 60 a bulges on the inner surface of the lower end of each locking claw 60. ing. The cord holder 50 is temporarily fixed to the substrate 12 by the hook portions 60 a of the respective locking claws 60 of the cord holder 50 being locked to the lower surface (locking means) of the substrate 12. That is, the cord holder 50 and the cover 51 are locked to the substrate 12. Each latching claw 60 extends in the vertical direction by a predetermined length, and the lower end of each latching claw 60 abuts on the upper surface of the unit cell 2, whereby the cord holder 50 and the substrate with respect to the upper surface of the unit cell 2. 12 and the vertical position of the cover 51 are set.

  As shown in FIG. 16, a positioning projection 61 bulges on the lower surface of the cord holder 50, and the positioning projection 61 is fitted into a fitting hole 62 formed in the substrate 12, whereby the cord for the substrate 12 is The position of the holder 50 is set. In addition, the convex part 56a provided in the outer surface of the engagement groove part 56 * 56 of the cover 51 is latched by the locking hole 52a formed in the upper side of the code | cord guide groove | channel 52 * 52 of the cord holder 50 in the shape of retaining. .

  As shown in FIGS. 15 and 16, a pair of front and rear projections 63 are formed in a horizontally long manner on the upper surface of the recess 30 of the cover 51 and facing each cord fitting groove 55 of the cord holder 50. It is. When the cover 51 is locked to the cord holder 50, both the cords 5a and 5b of the connection cord 5 are sandwiched between the protrusion 63 and the cord holder 50 and fixed in a retaining shape. In the unit cell 2 of this embodiment, an explosion-proof valve 11 is formed on the right side of the upper surface of the sealing plate 9, and the upper side of the explosion-proof valve 11 is covered with an insulating seal 38 and a vent cover 49.

  The procedure for assembling the intermediate assembly of the battery pack 1 of this embodiment will be described. Similarly to FIG. 1, the upper end portion of the long lead piece 16 and the one end portion of the short lead piece 17 are welded to the lower surface of the substrate 12, respectively. One terminal plate 15 a of the thermal fuse 15 is welded to the lower end portion of the lead piece 16. A vent cover 49 is affixed to the upper side of the explosion-proof valve 11 of the unit cell 2, and a double-sided tape 21 is affixed along the left side surface 2 a of the unit cell 2 and the like.

  Then, after the cord holder 50 is locked and temporarily fixed to the substrate 12, the cords 5 a and 5 b of the connection cord 5 are placed along the cord guide grooves 52 and the cord fitting grooves 55 of the cord holder 50. In this state, the conductors 13 and 13 of the cords 5a and 5b are soldered to the lands 23 and 23 of the substrate 12, respectively. Thereafter, the cover 51 is corded with the engagement grooves 56 and 56 of the cover 51 and the cord guide grooves 52 and 52 of the cord holder 50 bending and guiding the cords 5a and 5b of the connection cord 5 in an L shape. The holder 50 is temporarily locked.

  Next, after the other end portion of the short lead piece 17 is welded to the negative electrode terminal 10 of the unit cell 2, the short lead piece 17 is bent into a J shape and is long on the double-sided tape 21 on the left lateral side surface 2 a of the unit cell 2. While attaching the lead piece 16 and the thermal fuse 15, the lower end portion of the long lead piece 16 and one terminal 15a of the thermal fuse 15 are bent into an L shape, and the other terminal plate 15b of the thermal fuse 15 is connected to the unit cell. Weld to the lower surface of 2 to complete the intermediate assembly. Thereafter, the resin mold 6 is formed on the intermediate assembly using the mold 39 of FIG. 6 to complete the battery pack 1.

  That is, the cord holder 50 is accommodated in the concave portion 30 of the cover 51 together with the proximal ends of both the cords 5a and 5b of the connection cord 5, and the opening of the concave portion 30 of the cover 51 is the cord as shown in FIG. The resin mold 6 covering the unit cell 2 is in close contact with the peripheral portion of the lower surface (rear surface) of the cover 51 in a state where the holder 50 and the substrate 12 are closed, and the peripheral surface of the lower surface (rear surface) of the cord holder 50 It is in close contact with the portion, and in close contact with the lower surface (back surface) of the substrate 12. That is, the lower surface side of the cover 51 is integrated with the unit cell 2 together with the cord holder 50 and the lower surface side of the substrate 12 by the resin mold 6. A label 33 on which predetermined matters and the like are printed is attached to the outer peripheral surface of the completed battery pack 1 so as to be wound up and down.

  Also in this embodiment, since the lower surface of the recess 30 of the cover 51 is blocked by the upper surface of the cord holder 50 and the substrate 12 (see FIG. 15), the molten resin is prevented from flowing into the recess 30 of the cover 51, As shown in FIGS. 18 and 19, both the cords 5a and 5b of the connecting cord 5 are not covered with the molten resin. Therefore, it is possible to prevent the resin covering the conductive wires 13 and 13 of both the cords 5a and 5b of the connection cord 5 from being deteriorated by the heat of the molten resin.

  20 to 23 show another embodiment of the battery pack targeted by the present invention. In the battery pack 1 of this embodiment, the holder 19 of FIG. 1 is omitted. That is, as shown in FIGS. 20 to 22, the flat cover 20 is connected to one end portion (left end portion in FIG. 22) of each of the connecting cords 5 a. A pair of front and rear cord insertion holes 29 through which 5b is inserted in the vertical direction, a recess 30 extending in the left-right direction on the lower surface (back surface) of the cover 20, and an upper surface of the recess 30 in the code insertion hole (cord derivation portion) 29 In the vicinity of the right side, there are a protrusion 35 protruding downward and four locking claws 31 protruding downward from the left and right sides of the cover 20. Each locking claw 31 extends by a predetermined length in the vertical direction, and the lower end of each locking claw 31 comes into contact with the upper surface of the unit cell 2 as shown in FIG. The vertical positions of the substrate 12 and the cover 20 are set.

  Then, the base end sides of both the cords 5 a and 5 b of the connection cord 5 are accommodated in the recess 30 of the cover 20, and the lower surface of the recess 30 of the cover 20 is closed by the upper surface of the substrate 12. Further, the cover 20 is temporarily fixed to the substrate 12 by the hook portion 31 a bulging on the inner surface of the lower end of each locking claw (locking means) 31 of the cover 20 being locked to the lower surface of the substrate 12. . Also in this embodiment, the explosion-proof valve 11 is formed on the right side of the upper surface of the sealing plate 9 of the unit cell 2, and the upper side of the explosion-proof valve 11 is covered with the insulating seal 38 and the vent cover 49. On the outer surface side of the lower end of each locking claw 31, a convex portion 31b bulges out. The protrusion 31b further prevents the cover 20 from coming off from the resin mold 6.

  Explaining the assembly procedure of the intermediate assembly of the battery pack 1 of this embodiment, the upper end portion of the long lead piece 16 and the one end portion of the short lead piece 17 are respectively welded to the lower surface of the substrate 12 as in FIG. One terminal plate 15 a of the thermal fuse 15 is welded to the lower end portion of the long lead piece 16. And the vent cover 49 is affixed on the upper side of the explosion-proof valve 11 of the unit cell 2, and the double-sided tape 21 is affixed along the left side surface 2 a of the unit cell 2.

  21 and 22, the cords 5a and 5b of the connection cord 5 are respectively passed through the cord insertion holes 29 of the cover 20, and the conductors 13 and 13 of both cords 5a and 5b are connected to the lands of the substrate 12, respectively. After being soldered to 23, the hooks 31 a of the respective locking claws 31 of the cover 20 are locked to the lower surface of the substrate 12 to temporarily fix the cover 20 to the substrate 12.

  Next, after the other end portion of the short lead piece 17 is welded to the negative electrode terminal 10 of the unit cell 2, the short lead piece 17 is bent into a J shape and is long on the double-sided tape 21 on the left lateral side surface 2 a of the unit cell 2. While affixing the lead piece 16 and attaching the thermal fuse 15 to the unit cell 2, the lower end of the long lead piece 16 and one terminal 15a of the thermal fuse 15 are bent into an L shape, and the other terminal plate of the thermal fuse 15 15b is welded to the lower surface of the unit cell 2 to complete the intermediate assembly. Thereafter, the resin mold 6 is formed on the intermediate assembly using the mold 39 of FIG. 6 to complete the battery pack 1.

  That is, the resin mold 6 covering the unit cell 2 is in close contact with the peripheral portion of the lower surface (back surface) of the cover 20 and in close contact with the lower surface (back surface) of the substrate 12. The lower surface side of the substrate 12 is securely integrated with the unit cell 2. A label 33 on which predetermined matters and the like are printed is attached to the outer peripheral surface of the completed battery pack 1 so as to be wound up and down.

  Also in this embodiment, since the lower surface of the recess 30 of the cover 20 is blocked by the upper surface of the substrate 12, the molten resin is prevented from flowing into the recess 30 of the cover 20, and both the cords 5a and 5b of the connection cord 5 are It is not covered with molten resin. Therefore, it is possible to prevent the resin covering the conductive wires 13 and 13 of both the cords 5a and 5b of the connection cord 5 from being deteriorated by the heat of the molten resin.

It is a vertical front view which shows the principal part of the battery pack which concerns on this invention. It is a perspective view of a battery pack. It is a front view which shows the state which the electrical equipment of this invention decomposed | disassembled. It is a disassembled perspective view of the electrical component of this invention. It is a vertical front view which shows the state which the electrical equipment of this invention decomposed | disassembled. It is sectional drawing which shows the state which mounted | wore the metal mold | die with the intermediate assembly which concerns on this invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a vertical front view which shows the principal part of the battery pack which concerns on another Example of this invention. It is a perspective view of the battery pack of another Example. It is a disassembled perspective view of the electrical component of another Example. It is a vertical front view which shows the state which the electrical equipment of another Example decomposed | disassembled. It is CC sectional view taken on the line of FIG. FIG. 10 is a sectional view taken along line D-D in FIG. 9. It is a vertical front view which shows the principal part of the battery pack which concerns on another Example. It is a disassembled perspective view of the electrical component of another Example. It is a vertical front view which shows the state which the electrical equipment of another Example decomposed | disassembled. It is the EE sectional view taken on the line of FIG. It is the FF sectional view taken on the line of FIG. It is a vertical front view which shows the principal part of the battery pack which concerns on another Example. It is a disassembled perspective view of the electrical component of another Example. It is a vertical front view which shows the state which the electrical equipment of another Example decomposed | disassembled. It is the GG sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery pack 2 Unit cell 5 Connection cord 6 Resin mold 12 Substrate 13 Conductor 19 Holder 20 Cover 30 Recess 31 Locking claw 32 Locking hole 35 Projection 40 Cord holder 43 Cover 47 Projection 50 Code holder 51 Cover 57 Locking claw 59 Engaging convex part 60 Locking claw 63 Protrusion

Claims (9)

  1. A unit cell, a connection cord for connecting an external device to the unit cell, a substrate that is disposed on the outer surface of the unit cell and is exposed to a base end of the connection cord, and an outer surface of the unit cell And a resin mold that integrates the substrate with the unit cell,
    In the substrate, the back surface side of the substrate facing the unit cell is connected to the unit cell, and the surface side of the substrate is joined to the conductive wire of the connection cord, and the connection cord and the unit cell are interposed through the substrate. And is conducting,
    A flat cover is arranged on the surface side of the substrate,
    On the back side of the cover facing the substrate, a recess is formed that accommodates the proximal end side of the connection cord in a state connected to the substrate,
    On the surface side of the cover, there is a cord lead-out portion that leads the leading end side of the connection cord from the concave portion of the cover to the outside,
    A battery pack, wherein an opening of the concave portion of the cover is closed by the substrate, and a back surface side of the cover is integrated with the unit cell together with a back surface side of the substrate by the resin mold.
  2. A holder for receiving the substrate;
    The cover is locked to the holder by locking means;
    The battery pack according to claim 1, wherein the holder is integrated with the unit cell together with the substrate and the cover by the resin mold.
  3. Protrusions projecting toward the substrate are provided in the recesses of the cover,
    The battery pack according to claim 2, wherein the connection cord is sandwiched and fixed between the protrusion and the substrate.
  4. It has a cord holder that holds the base end side of the connection cord in a shape-retained state,
    The cord holder is formed so that the conducting wire of the connection cord is led out to the outside,
    The cord holder is housed in the recess of the cover together with the base end side of the connection cord,
    2. The battery pack according to claim 1, wherein the back surface side of the cover is integrated with the unit cell together with the back surface side of the substrate by the resin mold in a state where the opening of the concave portion of the cover is closed by the substrate.
  5. The cord holder holds a part of the base end side of the connection cord in an exposed state,
    In the concave portion of the cover, a protrusion that faces the part of the connection cord in the cord holder is provided,
    The battery pack according to claim 4, wherein the connection cord is sandwiched and fixed between the protrusion and the cord holder.
  6. It has a cord holder that holds the base end side of the connection cord in a shape-retained state,
    The cord holder is formed so that the conducting wire of the connection cord is led out to the outside,
    The cord holder and the cover are locked to the substrate by locking means,
    The cord holder is housed together with the base end side of the connection cord in the recess of the cover,
    With the opening of the concave portion of the cover closed by the cord holder and the substrate, the back side of the cover is integrated with the unit cell together with the cord holder and the back side of the substrate by the resin mold. The battery pack according to claim 1.
  7. In the cord holder, the base end side of the connection cord directly faces the inner surface of the cover,
    In the recess of the cover, a protrusion facing the connection cord held by the cord holder is provided,
    The battery pack according to claim 6, wherein the connection cord is sandwiched and fixed between the protrusion and the cord holder.
  8.   The battery pack according to claim 1, wherein the cover is locked to the substrate by locking means.
  9. Protrusions projecting toward the substrate are provided in the recesses of the cover,
    The battery pack according to claim 8, wherein the connection cord is sandwiched and fixed between the protrusion and the substrate.
JP2006348875A 2006-12-26 2006-12-26 Battery pack Withdrawn JP2008159501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006348875A JP2008159501A (en) 2006-12-26 2006-12-26 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006348875A JP2008159501A (en) 2006-12-26 2006-12-26 Battery pack

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JP2008159501A true JP2008159501A (en) 2008-07-10

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010182628A (en) * 2009-02-09 2010-08-19 Sanyo Electric Co Ltd Pack battery
JP2010219035A (en) * 2009-02-20 2010-09-30 Hitachi Maxell Ltd Battery pack and battery pack manufacturing method
JP2010257605A (en) * 2009-04-21 2010-11-11 Hitachi Maxell Ltd Battery pack
JP2011029025A (en) * 2009-07-27 2011-02-10 Hitachi Maxell Ltd Battery pack
JP2011065833A (en) * 2009-09-16 2011-03-31 Hitachi Maxell Ltd Battery pack
JP2011096573A (en) * 2009-10-30 2011-05-12 Hitachi Maxell Ltd Battery pack
JP2011222518A (en) * 2010-04-13 2011-11-04 Samsung Sdi Co Ltd Secondary battery pack
JP2014093144A (en) * 2012-11-01 2014-05-19 Hitachi Maxell Ltd Battery pack
CN104466284A (en) * 2014-12-11 2015-03-25 哈尔滨东方报警设备开发有限公司 Solar battery for portable gas detector
WO2017104109A1 (en) * 2015-12-17 2017-06-22 三洋電機株式会社 Battery pack and battery pack production method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010182628A (en) * 2009-02-09 2010-08-19 Sanyo Electric Co Ltd Pack battery
JP2010219035A (en) * 2009-02-20 2010-09-30 Hitachi Maxell Ltd Battery pack and battery pack manufacturing method
JP2010257605A (en) * 2009-04-21 2010-11-11 Hitachi Maxell Ltd Battery pack
JP2011029025A (en) * 2009-07-27 2011-02-10 Hitachi Maxell Ltd Battery pack
JP2011065833A (en) * 2009-09-16 2011-03-31 Hitachi Maxell Ltd Battery pack
JP2011096573A (en) * 2009-10-30 2011-05-12 Hitachi Maxell Ltd Battery pack
JP2011222518A (en) * 2010-04-13 2011-11-04 Samsung Sdi Co Ltd Secondary battery pack
JP2014093144A (en) * 2012-11-01 2014-05-19 Hitachi Maxell Ltd Battery pack
CN104466284A (en) * 2014-12-11 2015-03-25 哈尔滨东方报警设备开发有限公司 Solar battery for portable gas detector
WO2017104109A1 (en) * 2015-12-17 2017-06-22 三洋電機株式会社 Battery pack and battery pack production method

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