JP2004327206A - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
JP2004327206A
JP2004327206A JP2003119592A JP2003119592A JP2004327206A JP 2004327206 A JP2004327206 A JP 2004327206A JP 2003119592 A JP2003119592 A JP 2003119592A JP 2003119592 A JP2003119592 A JP 2003119592A JP 2004327206 A JP2004327206 A JP 2004327206A
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JP
Japan
Prior art keywords
battery
case
wall
connecting
cover
Prior art date
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.)
Granted
Application number
JP2003119592A
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Japanese (ja)
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JP3789904B2 (en
Inventor
Hideyo Morita
Masaya Nakano
雅也 中野
秀世 森田
Original Assignee
Sanyo Electric Co Ltd
三洋電機株式会社
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Sanyo Electric Co Ltd, 三洋電機株式会社 filed Critical Sanyo Electric Co Ltd
Priority to JP2003119592A priority Critical patent/JP3789904B2/en
Publication of JP2004327206A publication Critical patent/JP2004327206A/en
Application granted granted Critical
Publication of JP3789904B2 publication Critical patent/JP3789904B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

<P>PROBLEM TO BE SOLVED: To effectively absorb strong shock and remarkably increase strength durable to drop. <P>SOLUTION: The battery pack is equipped with a first case 1A, a second case 1B, and a hollow cover 2 all molded with plastic. The first case 1A has a battery housing part 4 for housing a battery 3. The first case 1A has a battery cover wall 5 installed in a position facing the end surface of the battery 3 housed in the battery housing part 4. The second case 1B has the total length longer than that of the first case 1A and has a projected part projecting outward from the battery cover wall 5 of the first case 1A. The hollow cover 2 is fixed to between a projecting end surface wall 8 of the second case 1B and the battery cover wall 5 of the first case 1A. The hollow cover 2 is molded in a hollow shape blocking an opening part of a gap formed between the projecting end surface wall 8 and the battery cover wall 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a battery pack that can improve the drop resistance.
[0002]
[Prior art]
It is important for the battery pack to improve the drop strength. This is because a battery pack that has been dropped and damaged cannot be used as a battery pack even if the built-in battery can be used. Battery pack structures for improving impact resistance have been developed. (See References 1 and 2)
[0003]
[Patent Document 1]
JP 2000-316041 A [Patent Document 2]
JP 2000-260401 A
Patent Literature 1 describes a battery pack or an electric device in which a cushioning material is provided at both ends, and the shock of a drop is absorbed by the cushioning material. In addition, the publication of Patent Document 2 describes a battery pack in which silicon rubber is filled between the inside of a casing and a battery. In this battery pack, the impact of the drop is absorbed by the silicone rubber.
[0005]
[Problems to be solved by the invention]
A structure in which a cushioning material is provided at the end or silicon rubber is filled in the case can effectively absorb a relatively small impact. However, the cushioning material and the silicone rubber are completely crushed when subjected to a large impact, and there is a problem that it is difficult to effectively absorb a strong impact. For this reason, when a heavy battery pack containing a large-capacity large battery falls and receives a strong impact, it is difficult to effectively absorb the impact, and it is not possible to effectively prevent a disadvantage that the strong battery cannot be used due to the strong impact.
[0006]
The present invention has been developed with the aim of solving such disadvantages of the conventional battery pack. An important object of the present invention is to effectively absorb a strong impact and significantly improve the drop resistance. It is to provide a battery pack.
[0007]
[Means for Solving the Problems]
The battery pack of the present invention includes a first case 1A, a second case 1B, and a hollow cover 2 formed of plastic. The first case 1 </ b> A has a battery storage unit 4 for storing the battery 3. The battery storage unit 4 has an opening into which the battery 3 is inserted. Further, the first case 1A is provided with a battery cover wall 5 at a position facing the end face of the battery 3 stored in the battery storage section 4. The second case 1B has a longer overall length than the first case 1A, and has a protruding portion 7 protruding outward from the battery cover wall 5 of the first case 1A. Further, the second case 1B is provided with a protruding end face wall 8 on the front end face of the protruding part 7. The hollow cover 2 is fixed between the projecting end wall 8 of the second case 1B and the battery cover wall 5 of the first case 1A. The hollow cover 2 is formed in a hollow shape for closing an opening of a gap formed between the protruding end wall 8 and the battery cover wall 5.
[0008]
In the battery pack according to claim 2 of the present invention, the hollow cover 2 has a side wall 21 inserted between the protruding end face wall 8 provided on the second case 1B and the connecting rib 10. The side wall 21 has a connecting claw 22 connected to the second case 1B. In the second case 1B, the connecting rib 10 for connecting the connecting claws 22 of the hollow cover 2 is integrally formed so as to protrude from the inner surface. The connecting rib 10 and the protruding end face wall 8 form a gap into which the side wall 21 having the connecting claw 22 can be inserted but cannot be removed. In this battery pack, the side wall 21 of the hollow cover 2 is inserted between the connecting rib 10 and the protruding end wall 8, and the connecting claw 22 of the side wall 21 is connected to the connecting rib 10.
[0009]
Further, in the battery pack according to claim 3 of the present invention, the hollow cover 2 has a side wall 21 inserted between the battery cover wall 5 and the connection rib 10. The side wall 21 has a connecting claw 22 connected to the second case 1B. In the second case 1B, the connecting rib 10 for connecting the connecting claws 22 of the hollow cover 2 is integrally formed so as to protrude from the inner surface. The connection rib 10 and the battery cover wall 5 form a gap into which the side wall 21 having the connection claw 22 can be inserted but cannot be removed. In this battery pack, the side wall 21 of the hollow cover 2 is inserted between the connection rib 10 and the battery cover wall 5, and the connection claw 22 of the side wall 21 is connected to the connection rib 10.
[0010]
Furthermore, in the battery pack according to claim 4 of the present invention, the hollow cover 2 has a protruding portion 24 protruding from the surface of the side wall 21 toward the battery cover wall 5 of the first case 1A. The battery pack is connected to the second case 1B such that the protrusion 24 is pressed by the battery cover wall 5 of the first case 1A fixed to the second case 1B so that the hollow cover 2 does not come off.
[0011]
Further, in the battery pack according to claim 5 of the present invention, the second case 1B is provided with a connection wall 9 integrally formed with the battery cover wall 5 of the first case 1A. A design groove 12 is provided on the outer surface of the bottom surface along the connecting wall 9.
[0012]
Furthermore, in the battery pack according to claim 6 of the present invention, the hollow cover 2 is formed in a shape along the surface of the electric device 40 on which the battery pack is mounted.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the following examples illustrate a battery pack for embodying the technical idea of the present invention, and the present invention does not specify a battery pack as follows.
[0014]
Further, in this specification, in order to make it easy to understand the claims, the numbers corresponding to the members shown in the embodiments are referred to as “claims” and “means for solving the problems”. Are added to the members indicated by "." However, the members described in the claims are not limited to the members of the embodiments.
[0015]
The battery pack shown in FIGS. 1 to 5 includes a case 1 including a first case 1A and a second case 1B that are connected to each other and contains a battery 3, and an end portion of the second case 1B and the first case 1B. And a hollow cover 2 fixed to an end protruding from 1A. The illustrated battery pack has four cylindrical batteries 3 stored in a case 1. The four cylindrical batteries 3 connect two batteries in a straight line, and further connect two batteries 3 connected in a straight line in parallel. However, the battery pack of the present invention can also accommodate a square battery or a thin battery in a case. Further, five or more or three or less batteries can be stored in the case. The battery 3 is a lithium ion battery, but any rechargeable battery such as a nickel-hydrogen battery or a nickel-cadmium battery can be used.
[0016]
The first case 1A is integrally formed of a hard plastic such as polycarbonate. The first case 1A has a battery storage section 4 for storing the battery 3, and a battery cover wall 5 is provided at a position facing an end surface of the battery 3 stored in the battery storage section 4. The battery housing portion 4 of the first case 1A is formed in a shape capable of housing two rows of cylindrical batteries 3 as shown in the sectional view of FIG. In the first case 1A shown in FIGS. 2 and 6, the upper plate 6 of the battery accommodating portion 4 which covers the upper surface of the battery 3 in these figures is formed into a shape along the surface of the cylindrical battery 3 in two rows. . Battery cover walls 5 are integrally formed at both ends of the upper plate 6. The first case 1 </ b> A has a battery storage unit 4 provided by an upper plate 6 and a battery cover wall 5. The battery housing part 4 is opened at the lower part in FIGS. 2 and 6, and serves as an opening part into which the battery 3 is inserted.
[0017]
The entire second case 1B is also integrally formed of a hard plastic such as polycarbonate. The second case 1B is connected below the first case 1A, and closes the opening of the battery housing 4 of the first case 1A. The second case 1B is connected to the first case 1A by ultrasonic welding. However, the second case can be connected to the first case with a fitting structure that does not come off or come off. The second case 1B has a longer overall length than the first case 1A, and is provided with a protruding portion 7 protruding outward from the battery cover wall 5 of the first case 1A. The illustrated second case 1B has protrusions 7 at both ends. The second case may be provided with a protrusion at one end. The protruding portion 7 of the second case 1B is provided with a protruding end surface wall 8 on the front end surface. The protrusion length of the protrusion 7 is about 1 to 3 cm. If the protruding length is less than 1 cm, sufficient drop strength cannot be obtained, and if it is longer than 3 cm, the overall length becomes large. The battery cover wall 5 is provided so as to be perpendicular to the bottom surface of the second case 1B.
[0018]
Further, the second case 1B of FIG. 2 includes a connection wall 9 connecting the battery cover wall 5 of the first case 1A, a connection rib 10 connecting the hollow cover 2, and an inner side arranged inside the battery cover wall 5. The wall 21 is integrally formed and provided. The connecting wall 9 is fixed to the battery cover wall 5 of the first case 1A by ultrasonic welding. In FIG. 2, the upper end surface of the connection wall 9 is connected to the lower end surface of the battery cover wall 5 by ultrasonic waves. The connecting wall 9 and the battery cover wall 5, which are connected by ultrasonic welding to each other, can be firmly connected by ultrasonic welding by providing a projection on one side and a recess for guiding the projection on the other side. Further, the connection wall 9 and the battery cover wall 5 having this structure can be adhered and firmly connected. The connecting wall 9 is provided to protrude from the bottom surface of the second case 1B to the inner surface. As shown in the front view of FIG. 4 and the bottom view of FIG. 5, the second case 1B integrally provided with the connection wall 9 has a design groove 12 along the connection wall 9 on the outer surface of the bottom surface. Is provided. In the second case 1B having this structure, a thick connecting wall 9 is integrally formed and provided, so that the outer surface can be formed into a beautiful shape. This is because the recess formed on the surface by providing the connecting wall 9 protruding from the inner surface can be hidden by the design groove 12.
[0019]
The connection ribs 10 are provided at both ends of the protrusion 7 provided at the end of the second case 1B. This is for connecting the connecting claws 22 provided on the side walls 21 on both sides of the hollow cover 2. One connecting rib 10 is provided close to the protruding end face wall 8, and the other connecting rib 10 is provided close to the battery cover wall 5 of the first case 1A connected to the second case 1B. This is for connecting the side wall 21 of the hollow cover 2 provided with the connecting claw 22 to the connecting rib 10 so as not to come off. The cross-sectional shape of the connecting portion is shown in the enlarged cross-sectional views of FIGS. FIG. 7 is a sectional view taken along line BB of FIG. One side wall 21 of the hollow cover 2 is inserted into a gap between the protruding end face wall 8 and the connection rib 10, and the other side wall 21 is inserted into a gap between the connection rib 10 and the battery cover wall 5. The gap between the protruding end wall 8 and the connection rib 10 and the gap between the connection rib 10 and the battery cover wall 5 are gaps into which the side wall 21 of the hollow cover 2 can be inserted but cannot be removed. With this structure, the hollow cover 2 is press-fitted into the second case 1B, and is not bonded.
Further, the connection can be made to the second case 1B so as not to come out of the hollow cover 2 without being connected by a method such as ultrasonic welding.
[0020]
The connecting rib 10 is provided with a locking recess 13 that can catch a connecting claw 22 provided on a side wall 21 of the hollow cover 2. In the illustrated connection rib 10, a through hole is provided in the connection rib 10 to serve as a locking recess 13.
[0021]
The inner wall 11 is further inside the connecting wall 9 and is disposed on the inner surface of the battery cover wall 5 of the first case 1A. The inner wall 11 and the connecting rib 10 are formed thinner than the connecting wall 9. In the second case 1B, the design groove 12 provided on the outer surface of the second case 1B and outside the connecting wall 9 is not provided outside the inner wall 11 and the connecting rib 10, and the second case 1B It is possible to prevent a recess due to sink mark from being formed on the outer surface of the connecting rib 10. As shown in FIG. 2, the second case 1B provided with the pair of inner side walls 11 can easily connect the first case 1A to a fixed position. This is because the first case 1A can be connected to a fixed position of the second case 1B by inserting the pair of inner side walls 11 inside the battery cover wall 5 of the first case 1A.
[0022]
Further, the second case 1B of FIG. 2 is provided with a plurality of battery support ribs 14 for holding the battery 3 which are integrally formed. In the illustrated second case 1B, a plurality of rows of battery support ribs 14 are arranged in parallel and provided at predetermined intervals. The upper surface of the battery support rib 14 has a shape along the surface of the battery 3. The battery 3 is provided between the battery support rib 14 and the inner surface of the first case 1A.
[0023]
Further, the second case 1B of FIG. 2 has a board storage portion 15 for disposing the circuit board 30 connected to the battery 3 and a holder storage portion 16 for disposing the terminal holder 31 at the top in the figure. Provided. The board holding portion 17 is provided with a board supporting rib 17 of the circuit board 30 which is integrally formed. The illustrated second case 1B is provided with a first substrate supporting rib 17A having a slit 17a and a second substrate supporting rib 17B having no slit. The circuit board 30 is inserted into the slit 17a of the first board support rib 17A, and the second board support rib 17B contacts the surface of the circuit board 30 to support the circuit board 30 in a fixed position.
[0024]
The holder accommodating section 16 is an accommodating section for accommodating the terminal holder 31 in a state of being exposed outside the case 1, and is shown in an exploded perspective view of FIG. 2 and a plan view of FIG. 9 from which the first case 1A is removed. As described above, the holder supporting rib 18 is provided on the back surface, and a pair of retaining walls 19 are provided at both end portions so as to fit so as not to fall out of the terminal holder 31. The holder supporting ribs 18 are on the back surface of the terminal holder 31 and prevent the terminal holder 31 from being pushed and moved rearward. The retaining wall 19 has a narrow opening to hold the terminal holder 31 fitted therein so as not to come off. The second case 1 </ b> B in FIG. 2 uses the second substrate support rib 17 </ b> B as a part of the retaining wall 19.
[0025]
The circuit board 30 and the terminal holder 31 are connected to the battery 3 as shown in FIGS. In this figure, the circuit board 30 is connected to the battery 3 via the lead 32 in a posture away from the battery 3 and in parallel with the battery 3. The terminal holder 31 is fixed to the surface of the circuit board 30 by a method such as soldering. The terminal holder 31 fixes the output terminal 33, and connects the output terminal 33 to the electrode of the battery 3 via a protection component (not shown) mounted on the circuit board 30. The battery 3 is housed in the battery housings 4 of the second case 1B and the first case 1A, the circuit board 30 is arranged in the board housing 15, and the terminal holder 31 is arranged in the holder housing 16. In the second case 1B shown in FIG. 1, the upper surface opening is closed by the first case 1A. However, the upper surface openings of the substrate storage portion 15 and the holder storage portion 16 are also closed by the first case 1A and the circuit board is closed. 30 and the terminal holder 31 are arranged in the case 1.
[0026]
Further, the second case 1B shown in FIG. 1 is integrally provided with an engaging hook 20 for connecting so as not to come off in a state of being set to an electric device to be mounted. The engagement hook 20 is provided adjacent to the holder storage section 16 and protrudes from the second case 1B.
[0027]
The hollow cover 2 is also manufactured by integrally molding a hard plastic. The hollow cover 2 is fixed between the protruding end wall 8 of the second case 1B and the battery cover wall 5 of the first case 1A, and an opening of a gap formed between the protruding end wall 8 and the battery cover wall 5 is formed. Into a hollow shape that closes off. The hollow cover 2 is formed into a shape along the surface of the electric device on which the battery pack is mounted, and has a closing surface 23 for closing an opening between the protruding end wall 8 and the battery cover wall 5, and both sides of the closing surface 23. And a side wall 21 integrally formed with the side wall. The battery pack in which the closed surface 23 of the hollow cover 2 is formed in a shape along the surface of the electric device to be mounted is mounted on the electric device 40 in a state of protruding from the case surface of the electric device 40 as shown in FIG. Thus, the hollow cover 2 can approach the surface of the electric device 40. The battery pack attached to the electric device 40 in this state has a feature that the second case 1B is long, that is, the protruding portion 7 is long, so that the battery pack can be securely attached to the electric device 40. In the electric device 40, the shape of the edge of the protruding end surface wall 8 is also formed into a shape along the closed surface 23. In other words, the protruding end wall 8 does not protrude from the closed surface 23 of the hollow cover 2.
[0028]
As shown in the cross-sectional view of FIG. 8, the hollow cover 2 has a pair of side walls 21 including a first side wall 21A and a second side wall 21B provided on both sides of a closed surface 23. FIG. 8 is a view corresponding to a cross section taken along line BB of FIG. The first side wall 21A is inserted between the protruding end face wall 8 provided on the second case 1B and the connection rib 10. The second side wall 21B is inserted between the connection rib 10 of the second case 1B and the battery cover wall 5 of the first case 1A. Each side wall 21 is provided with a connecting claw 22 integrally formed with the connecting rib 10 of the second case 1B. The side wall 21 in the figure is provided with a convex portion protruding inward from each other to form a connecting claw 22 which is hooked on the locking concave portion 13 of the connecting rib 10.
[0029]
The hollow cover 2 has a structure in which the side wall 21 on which the connecting claw 22 is provided is press-fitted and does not come off. In order to realize this, the gap for inserting the first side wall 21A, that is, the gap between the protruding end face wall 8 and the connecting rib 10 can insert the side wall 21 having the connecting claw 22 here. The gap does not come out. Further, the gap for inserting the second side wall 21B, that is, the gap between the connection rib 10 and the battery cover wall 5 is a gap where the side wall 21 having the connection claw 22 can be inserted, but does not come off after being inserted. . The second case 1B, the first case 1A, and the hollow cover 2, which are formed of hard plastic, are elastically deformed when the side wall 21 is strongly pressed into the gap and press-fitted. Between the connecting rib 10 and the battery cover wall 5. In the inserted state, as shown in the cross-sectional view of FIG. 8, the first side wall 21A is sandwiched between the protruding end wall 8 and the connecting rib 10, and the second side wall 21B is connected to the connecting rib 10 and the battery cover wall 5. , So that they are connected without falling off.
[0030]
Further, the hollow cover 2 shown in FIG. 2 is provided with a protrusion 24 integrally protruding from the surface of the side wall 21 toward the battery cover wall 5 of the first case 1A. FIGS. 13 and 14 show cross sections of a portion connecting the protruding portion 24 to the second case 1B and the first case 1A. 13 is a cross-sectional view taken along line CC of FIG. 3, and FIG. 14 is an enlarged cross-sectional view of a main part of FIG. The hollow cover 2 shown in these figures is connected to the second case 1B so that the battery cover wall 5 of the first case 1A presses the protruding portion 24 against the second case 1B so that the hollow cover 2 does not come off. Therefore, by connecting the first case 1A to the second case 1B, the first case 1A can be connected to the second case 1B in a state where the hollow cover 2 is not easily pulled out. As shown in FIGS. 2, 9, and 14, the second case 1 </ b> B is provided with a cutout 25 in the connecting wall 9 for receiving the protrusion 24. The projection 24 guided by the cutout 25 is pressed by the battery cover wall 5 of the first case 1A, and the hollow cover 2 is fixed to the second case 1B.
[0031]
【The invention's effect】
Advantageous Effects of Invention The battery pack of the present invention has a feature that a strong impact can be effectively absorbed and drop resistance can be significantly improved. That is, the battery pack of the present invention includes a first case having a battery storage section for storing a battery, and a second case which closes an opening of the battery storage section and has a longer overall length than the first case. Between the projecting end wall of the projecting portion of the second case projecting outward from the first case and the battery cover wall at both ends of the first case, to close the opening of the gap formed therebetween. This is because the hollow cover formed into a hollow shape is fixed. This battery pack has a structure in which a hollow cover is fixed to a protruding portion that protrudes outward from the battery housing portion, and a hollow portion is provided between the protruding portion and the hollow cover, and the hollow portion absorbs an impact. This structure, unlike cushioning material and silicone rubber, does not crush the part that absorbs shocks even if it receives a large shock, so it can effectively absorb strong shocks due to falling etc. and can significantly improve drop resistance. . Further, since the battery pack absorbs the impact in the hollow portion provided outside the battery housing, even if the projection or the hollow cover of the second case may be damaged by a strong impact, the battery inside the battery case may be damaged. There is a feature that batteries and the like can be effectively protected without damaging the storage section.
[Brief description of the drawings]
FIG. 1 is a perspective view of a battery pack according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of the battery pack shown in FIG. 1 as viewed from the back. FIG. 3 is a plan view of the battery pack shown in FIG. 4 is a front view of the battery pack shown in FIG. 1. FIG. 5 is a bottom view of the battery pack shown in FIG. 1. FIG. 6 is a cross-sectional view of the battery pack shown in FIG. FIG. 8 is an enlarged sectional view showing a connection structure of a hollow cover of the battery pack shown in FIG. 7; FIG. 9 is a plan view showing a state where a first case of the battery pack shown in FIG. 3 is removed; FIG. 10 is a bottom view showing the connection structure of the battery, the circuit board, and the terminal holder in FIG. 9; FIG. 11 is a side view showing the connection structure of the battery, the circuit board, and the terminal holder. FIG. 12 is a battery pack shown in FIG. FIG. 13 is a side view showing a state in which the battery pack is mounted on an electric device. FIG. 13 is a CC line of the battery pack shown in FIG. Rear view Figure 14 enlarged sectional view showing the connecting structure of the hollow cover of the battery pack shown in FIG. 13 [Description of symbols]
DESCRIPTION OF SYMBOLS 1 ... Case 1A ... 1st case 1B ... 2nd case 2 ... Hollow cover 3 ... Battery 4 ... Battery storage part 5 ... Battery cover wall 6 ... Top plate 7 ... Projection part 8 ... Projection end surface wall 9 ... Connection wall 10 ... Connection Rib 11 ... inner wall 12 ... design groove 13 ... locking recess 14 ... battery support rib 15 ... substrate storage part 16 ... holder storage part 17 ... substrate support rib 17A ... first substrate support rib 17B ... second substrate support rib 17a ... slit 18 ... holder support rib 19 ... retaining wall 20 ... engaging hook 21 ... side wall 21A ... first side wall 21B ... second side wall 22 ... connecting claw 23 ... closing surface 24 ... protruding part 25 ... notch 30 ... Circuit board 31 Terminal holder 32 Lead 33 Output terminal 40 Electrical equipment

Claims (6)

  1. A battery housing (4) for housing the battery (3) is provided, and a battery cover wall (5) is provided at a position facing an end surface of the battery (3) housed in the battery housing (4). The battery housing (4) has an opening for inserting the battery (3) therein, and a first case (1A) formed entirely of plastic;
    It is connected to the first case (1A) to close the opening of the battery housing (4), and has a longer overall length than the first case (1A), and has a battery cover wall (5) of the first case (1A). And a second case (1B) formed by molding plastic into a shape having a protruding end wall (8) at the tip end surface of the protruding portion (7). ,
    The projecting end wall (8) and the battery cover wall (5) are fixed between the projecting end wall (8) of the second case (1B) and the battery cover wall (5) of the first case (1A). A battery pack comprising: a plastic hollow cover (2) molded into a hollow shape that closes an opening of a gap formed therebetween.
  2. The hollow cover (2) has a side wall (21) inserted between the protruding end wall (8) provided on the second case (1B) and the connecting rib (10), and the side wall (21) is the second side. The second case (1B) has a connecting rib (10) connecting the connecting claw (22) of the hollow cover (2) so as to protrude to the inner surface. The connecting rib (10) and the protruding end face wall (8) are formed as an integral part, and are provided as gaps into which the side wall (21) having the connecting claw (22) can be inserted but cannot be removed, and the hollow cover (2) The side wall (21) is inserted between the connecting rib (10) and the protruding end wall (8) to connect the connecting claw (22) of the side wall (21) to the connecting rib (10). Battery pack described in.
  3. The hollow cover (2) has a side wall (21) inserted between the battery cover wall (5) and the connection rib (10), and the side wall (21) is connected to the second case (1B) by a connection claw. (22), the second case (1B) is provided with a connecting rib (10) for connecting the connecting claw (22) of the hollow cover (2) integrally formed so as to protrude from the inner surface, The connecting rib (10) and the battery cover wall (5) are gaps that allow the side wall (21) with the connecting claw (22) to be inserted but not come off, and the side wall (21) of the hollow cover (2) is connected to the connecting rib (10). 3) The battery pack according to claim 1, wherein the battery pack is inserted between the battery cover wall (5) and the connecting pawl (22) of the side wall (21) to connect to the connecting rib (10).
  4. The hollow cover (2) has a protrusion (24) projecting from the surface of the side wall (21) toward the battery cover wall (5) of the first case (1A), and is fixed to the second case (1B). The battery cover wall (5) of the first case (1A) presses the protruding portion (24) and is connected to the second case (1B) so as not to come off the hollow cover (2). Battery pack described.
  5. The second case (1B) is integrally formed with a connecting wall (9) connected to the battery cover wall (5) of the first case (1A). The battery pack according to claim 1, wherein a design groove (12) is provided along (9).
  6. The battery pack according to claim 1, wherein the hollow cover (2) is formed in a shape along the surface of the electric device (40) on which the battery pack is mounted.
JP2003119592A 2003-04-24 2003-04-24 Battery pack Expired - Fee Related JP3789904B2 (en)

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Cited By (7)

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JP2007265855A (en) * 2006-03-29 2007-10-11 Sanyo Electric Co Ltd Battery pack
JP2008218210A (en) * 2007-03-05 2008-09-18 Lenovo Singapore Pte Ltd Battery pack and portable electronic device
CN101533896A (en) * 2008-03-13 2009-09-16 三洋电机株式会社 Battery pack
WO2011013327A1 (en) * 2009-07-31 2011-02-03 パナソニック株式会社 Battery pack case and method for manufacturing same, and battery pack and method for manufacturing same
JP2012506108A (en) * 2008-10-14 2012-03-08 エルジー・ケム・リミテッド Electrode terminal connection member for core pack manufacturing
JP2014216155A (en) * 2013-04-25 2014-11-17 三洋電機株式会社 Battery pack
WO2016121357A1 (en) * 2015-01-30 2016-08-04 三洋電機株式会社 Battery pack

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Publication number Priority date Publication date Assignee Title
JP2007265855A (en) * 2006-03-29 2007-10-11 Sanyo Electric Co Ltd Battery pack
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CN102473875A (en) * 2009-07-31 2012-05-23 松下电器产业株式会社 Battery pack case and method for manufacturing same, and battery pack and method for manufacturing same
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