JP2002334686A - Battery and portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the battery installed on the cellular phone from becoming unsteady. SOLUTION: The portable terminal comprises a battery cell, a circuit board that is electrically connected to each terminal of this battery cell, and a connector 6 that is electrically connected to this circuit board, and while exposing the insertion part 6a of this connector 6, these battery cell, circuit board, and connector 6 are molded in one body at the resin molded part 3. And by providing ribs 3a on the side face of the resin molded part 3, the gap in the width direction with the battery housing part when the battery 1 is installed on the cellular phone is eliminated in substance, thereby, the battery 1 is prevented form becoming unsteady.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery suitable for a portable telephone or the like and a portable terminal provided with the battery.

[0002]

2. Description of the Related Art For example, a portable terminal such as a portable telephone or PHS (registered trademark) is provided with a battery housing inside a case, and a battery is mounted in this housing. Conventionally, when vibration is applied to the portable terminal, measures are taken to prevent the rattling of the battery so that the battery does not rattle in the receiving portion and the noise is generated by rubbing the inner wall surface of the receiving portion. I have.

Conventionally, (1) a cushion material is stuck to a side surface of a housing portion of a case, and when a battery is mounted in the housing portion, the battery is pressed against the cushion material and mounted while compressing the cushion material. Then, the gap between the battery and the housing portion is filled with a cushion material to prevent rattling of the battery, or (2) a protrusion-like rib is provided in advance on the side surface of the housing portion of the case,
By mounting the battery inside the rib, the substantial clearance between the housing and the battery is reduced to prevent rattling of the battery.

[0004]

However, the conventional measures to prevent rattling of the battery have the following problems. In the method using the cushion material, a step of attaching the cushion material to the case is required, and the number of steps is increased. Further, since the cushion material changes with time and contracts due to heat or the like, the clearance between the case and the battery gradually increases, and the battery may rattle and generate abnormal noise.

In the method of providing ribs on the case, since the case is generally formed of a hard material such as ABS resin, if the ribs are integrally formed with the case, the ribs are naturally hardened. If the rib made of the hard material is set to a dimension that can absorb the clearance, very high dimensional accuracy is required, and it becomes difficult to manufacture, resulting in an increase in cost. SUMMARY OF THE INVENTION The present invention provides a battery having a simple structure and capable of preventing rattling in a housing portion of a portable terminal or the like, and a portable terminal equipped with the battery.

[0006]

According to an aspect of the present invention, there is provided a battery according to the present invention, comprising: a battery cell; a circuit board electrically connected to each terminal of the battery cell; An electric connection part electrically connected to the circuit board, and exposing a connection end of the electric connection part to integrally form the battery cell, the circuit board, and the electric connection part with a resin mold part. Further, a rib for substantially eliminating a gap with a housing portion in which the battery is mounted is formed integrally with the resin mold portion. With such a configuration, the rib integrally formed with the resin mold portion substantially eliminates a gap between the battery and the housing portion, and prevents rattling of the battery in the housing portion. In addition, since the resin mold part is soft, the dimensional accuracy of the ribs when setting the dimensions of the ribs to absorb the clearance between the battery and the housing part is higher than when the ribs are integrally molded on the hard housing part side. Low cost.

According to a second aspect of the present invention, in the first aspect, the resin mold portion is made of a polyamide or a polyurethane resin. A portable terminal according to a third aspect of the present invention includes the battery according to the first or second aspect. With this configuration, it is possible to prevent vibration of the battery mounted on the mobile terminal.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. [First Embodiment] First, a first embodiment of the present invention will be described with reference to FIGS. FIG.
1 shows a battery 1 according to the first embodiment of the present invention. The battery 1 is used for a mobile phone as a mobile terminal, and includes a battery unit 2 and a resin mold portion 3. On one side surface of the resin mold portion 3, two ribs 3a, 3a are provided apart from each other. The ribs 3a have a substantially semicircular cross section and extend over substantially the entire thickness of the battery 1 in the thickness direction.

The battery unit 2 is shown in FIGS.
As shown in (1), the battery cell 4, a circuit board 5, a connector (electric connection part) 6, a negative electrode connecting member 7, a positive electrode connecting member 8, and an insulating sheet 9 are provided. The battery cell 4 is, for example, a lithium ion battery provided with a thin rectangular container made of deep-drawn aluminum. As shown in FIG. 3, a negative terminal (-) is provided at the front end of the battery cell 4, and a portion other than the negative terminal (-) is configured as a positive terminal (+).

The circuit board 5 is a rectangular member corresponding to a side surface (outer surface) 4a along the length direction of the battery cell 4. This circuit board 5 is a board including a charge control circuit and a short circuit safety circuit. Land portions 5c and 5d are provided on the front and rear ends of the back surface 5b. The circuit board 5 is closely arranged on the side surface 4 a of the battery cell 4 via an insulating sheet 9.

The connector 6 is connected and fixed to a front surface 5a of the circuit board 5 on the front end side. The connector 6 is a member that is inserted into a connector of a mobile phone described later to electrically connect the battery cell 4 and the mobile phone.
The insertion portion 6 a of the connector 6 is directed toward the front end of the battery cell 4. Between the negative terminal (-) of the battery cell 4 and the land portion 5c on the front end side of the circuit board 5, each terminal 7a, 7b of the bent negative electrode connecting member 7 that conducts these is connected by spot welding. I have. The terminals 8a and 8b of the bent positive electrode connecting member 8 having the same configuration are connected by spot welding between the positive terminal (+) of the battery cell 4 and the land 5d on the rear end side of the circuit board 5. Have been.

Here, the negative electrode connecting member 7 is disposed along the side surface 4a and the front end surface of the battery cell 4, and the positive electrode connecting member 8 is disposed along the side surface 4a and the rear end surface of the battery cell 4. is there. The insulating sheet 9 is, for example, a member such as a double-sided tape that covers the side surface 4 a and a part of the front end surface of the battery cell 4, and insulates the negative electrode connecting member 7, the circuit board 5 from the battery cell 4. At the same time, the negative electrode connecting member 7 and the positive electrode connecting member 8 are temporarily fixed. The front edge 9a of the insulating sheet 9 extends from the front end face of the battery cell 4 to a portion in front of the negative terminal (-), and the rear edge 9b of the insulating sheet 9 is connected to the side face 4a of the battery cell 4.
It has a length to cover.

As shown in FIG. 1, the battery unit 2 thus configured is integrally formed with the resin mold portion 3 so as to cover the periphery thereof in a U-shape, thereby forming the battery 1. Thereby, the battery cell 4,
The circuit board 5, the connector 6, the negative electrode connecting member 7, the positive electrode connecting member 8, and the insulating sheet 9 are integrally fixed by the resin mold portion 3. The rib 3a is provided on the side surface of the resin mold portion 3 on the side that covers the circuit board 5.

According to the battery 1, since the resin mold portion 3 itself exerts an insulating effect, the number of parts can be reduced as compared with the case where a plurality of insulating materials are used, and the cost can be reduced. In addition, since the circuit board 5 and the like are sealed with the resin by the resin mold portion 3, high safety can be realized, and the number of components can be reduced because the resin mold portion 3 also serves as a cover and a joint of each component, so that the size can be reduced. And reliability is improved. Since the circuit board 5 is covered with the resin mold portion 3, the load applied to the connector 6 can be shared by the resin mold portion 3. Therefore,
The structure of the connector 6 can be simplified, and the cost can be reduced. Also, the battery cell 4, the circuit board 5,
Since the connector 6 is integrally molded with the resin mold portion 3, high mechanical strength is obtained, impact properties and the like are increased, and reliability can be improved.

Next, the resin mold portion 3 having the rib 3a
A method of manufacturing the battery unit 2 around the battery unit 2 by using an aluminum mold 10 as shown in FIG. First, the battery unit 2 described above is set in the mounting groove 11a formed in the lower mold 10a. At this time, the insertion portion 6a of the connector 6 of the battery unit 2 and the surface 6b of the connector 6 are attached to the mounting groove 11a.
The battery unit 2 is set in contact with the inner wall 11h. As a result, a space is formed around the battery unit 2 as much as the connector 6 protrudes. In this embodiment, the side opposite to the side where the connector 6 is attached is the side of the battery unit 2 (the other side 4 facing the side 4a of the battery cell 4).
b) is in contact with the inner side wall 11h of the mounting groove 11a.

In this state, the lower die 1 is adjusted so that the mounting groove 11b of the upper die 10b is aligned with the mounting groove 11a of the lower die 10a.
0a of the positioning pin 12 with the positioning hole 13 of the upper die 10b.
And the upper mold 10b and the lower mold 10a are clamped. Thereby, the rib forming grooves 11c, 11c provided on the inner wall side of the lower mold 10a and the upper mold 10b on the space side are connected in a straight line. Next, a polyamide resin is injected at a low temperature and a low pressure from a resin injection groove 14 (14a, 14b) formed in a joint portion between the upper die 10b and the lower die 10a.

The injected polyamide resin is supplied to the cavity 11 formed between the mounting grooves 11a and 11b in the mold 10.
Inside. In this embodiment, the mounting grooves 11a, 11
The polyamide resin is injected so as to surround the periphery of the battery unit 2 disposed between the terminals b, specifically, the side surface on which the connector 6 is attached and the front end surface and the rear end surface of the battery cell 4 in a U-shape. . And the mold 10
When the polyamide resin is forcibly or left to cool and the polyamide resin is solidified in the mold 10, the mold is opened and the extrusion hole 15 is opened.
The product is extruded by the pin (1), and the manufacture of the battery 1 is completed.

As a result, it is possible to obtain an integrated battery 1 in which the battery unit 2 is covered with the polyamide resin injected into the mold 10, and the resin mold portion 3 and the rib 3a are integrally formed. it can. Therefore, man-hours for assembling each part can be omitted, and productivity can be improved. Further, since the polyamide resin is injected at a low temperature and a low pressure, the circuit board 5 is not adversely affected.

Next, a portable telephone K as a portable terminal to which the battery 1 is attached will be described with reference to FIGS. The mobile phone K shown below has a well-known structure in which the display unit 20 and the key operation unit 21 are configured to be foldable by hinges 22. Therefore, the overall shape is not shown, and the user can understand the mounting state of the battery 1. Only the perspective view seen from the back side in the state of being folded will be described.

The mobile phone K is provided with a concave receiving portion 23 for mounting the battery 1 on the back side of the operation portion 21. A lid 24 is detachably attached to the housing 23. Specifically, protrusions 24a, 24a are formed on the base end side of the lid 24, and locking portions 24b are formed on the distal end side. Hook 24h on the release hook H
And is attached to the housing portion 23.

The housing portion 23 is provided with a main body side connector 25 which is inserted into the connector 6 at a position facing the connector 6 on the inner wall 23 a facing the sliding direction of the battery 1. When the battery 1 is stored in the housing portion 23, the side surface of the battery 1 where the battery cell 4 is exposed and the ribs 3 a of the resin mold portion 3 of the battery 1 are attached to the inner wall of the housing portion 23. Close, battery 1 from this state
The connector 6 of the battery 1 is connected to the connector 25 on the main body side by sliding the connector toward the negative terminal (−) of the battery 1 in the front. Therefore,
The housing 23 is provided with the battery 1 and the connector 6.
Is inserted into the main body side connector 25, a space is formed between the main body side connector 25 and the rear end of the battery 1 for the insertion margin of the battery 1. The hatched portion in FIG. 5 is the resin mold portion 3 (the same applies to the following drawings).

Then, as shown in FIG.
A pair of fixing ribs 26 are formed on the back side on the base end side. The fixing ribs 26, 26 are inserted into a space formed between the housing portion 23 and the rear end of the battery 1 when the connector 6 of the battery 1 is joined, that is, a space serving as an insertion margin of the connector 6. Things. Each of the fixing ribs 26 has an inclined surface 26a, and generates a force for supporting the rear end of the battery 1 (toward the front) when the lid 24 is attached to the housing portion 23.

Next, a procedure for attaching the battery 1 to the mobile phone K will be described with reference to FIGS. As shown in FIG. 5, the cover 24 of the mobile phone K is opened and removed, and the battery 1 is stored in the storage section 23 (FIG. 7). When the battery 1 is stored in the housing portion 23, the side surface of the battery 1 where the battery cell 4 is exposed, and the rib 3 of the resin mold portion 3 of the battery 1
a, 3a come into close contact with the inner wall of
Is restricted in the width direction. That is, battery 1
The rib 3a has a function of substantially eliminating a gap in the width direction between the battery 1 and the housing portion 23. Next, as shown by an arrow in FIG. 7, the battery 1 is slid forward and the connector 6 of the battery 1 is inserted into the main body side connector 25 (FIG. 8).

Next, as shown in FIG. 9 and FIG.
When the lid 24 is rotated in the closing direction in a state where the projection 24a of FIG. 4 is locked to the housing 23, the fixing rib 26 is inserted between the rear end of the battery 1 and the housing 23, and When the locking portion 24b is locked to the release hook H on the telephone K side (FIG. 11), the housing 23 is closed by the lid 24, and the work of attaching the battery 1 to the mobile telephone K is completed.

Accordingly, the movement of the battery 1 in the width direction is restricted by the ribs 3a of the battery 1, and the movement of the battery 1 in the front-rear direction is restricted by the fixing ribs 26 of the lid 24. The battery 1 can be securely attached without any noise, and no abnormal noise is generated due to rattling of the battery 1.

Then, the resin mold portion 3 of the battery 1
Since the rib 3a formed integrally with the resin is relatively soft,
Even when the dimensions of the ribs 3a are set to absorb the clearance between the battery 1 and the accommodating section 23, the dimensional accuracy is lower than when the ribs are integrally formed on the accommodating section 23 made of hard resin. Manufacturing becomes easy, and cost can be reduced.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 12 shows a battery 1 according to the second embodiment. This battery 1 also includes a battery unit 2A and a resin molded portion 3A. However, the resin mold portion 3A is provided so as to go around the periphery of the battery unit 2A. I have.

The battery unit 2A is shown in FIG.
As shown in FIG. 14, a battery cell 31, a circuit board 32, an input / output terminal (electric connection part) 33 provided on the upper surface 32a of the circuit board 32 and provided at a front end edge, and a positive electrode connection member 34 , Negative electrode connecting member 35 and insulating sheet 36
It has. Since the battery cell 31 is the same as the battery cell 4 of the first embodiment, the description is omitted.

The circuit board 32 has a length whose front end protrudes from the upper surface (one surface) 31a of the battery cell 31 and is adhered to the upper surface 31a of the battery cell 31 via an annular double-sided tape T. Are superimposed. The circuit board 32 includes a charge control circuit and a short circuit safety circuit on the back surface (the back surface of the upper surface 32 a) of the portion protruding from the battery cell 31. Terminals 33a, 33b, 33b are provided from the ends. The terminals 33a, 33b, and 33c are adapted to be energized by contacting a spring-type telephone-side terminal of the mobile telephone.

The positive terminal (+) of the battery cell 31
Between the terminal connection portions 34a, 34b of the bent positive electrode connection member 34 that conducts them between the terminal connection portions 34a,
34b is connected by spot welding. Further, the negative terminal (-) of the battery cell 31 is connected to the circuit board 32.
The terminal connecting portion 35a of the negative electrode connecting member 35 is connected to the terminal 33c by spot welding. The terminal 33b is for inputting or outputting a charge control signal, and is connected to a charge control circuit provided on the circuit board 32.

Here, the positive electrode connecting member 34 is disposed along the side surface 31b and the front end surface of the battery cell 31, and the negative electrode connecting member 35 is disposed on the front end surface of the battery cell 31. The insulating sheet 36 is used for the battery cell 31.
Is a member that covers the side surface 31b and a part of the front end surface. The front edge 36a of the insulating sheet 36 extends from the front end face of the battery cell 31 to a portion in front of the negative terminal (-), and the rear edge 36b of the insulating sheet 36 has a length covering the side surface 31b of the battery cell 31. ing.

Then, as shown in FIG. 12, the battery unit 2A thus configured is integrally formed with the resin mold portion 3A so as to cover the periphery, thereby forming the battery 1. Thereby, the battery cell 31, the circuit board 32, the positive electrode connecting member 34, the negative electrode connecting member 35, and the insulating sheet 36 are integrally fixed by the resin mold portion 3A. The method of manufacturing the resin mold portion 3A is the same as that of the first embodiment. The battery unit 2A is set in a mold, and for example, a polyamide resin is injected into an annular space formed around the battery unit 2A. Solidify. When manufacturing the resin mold portion 3A, the rib 3
a is integrally formed.

In the case of the battery 1 of the second embodiment, the housing of the portable telephone is formed to be substantially the same size as the battery 1, and the battery 1 is accommodated in the housing of the portable telephone. Just the terminal 3 of the battery 1
3a, 33b, and 33c come into contact with a spring-type telephone-side terminal provided on the inner bottom surface of the battery accommodating portion of the mobile phone, and as in the first embodiment, store the battery 1 in the housing portion of the mobile phone. And then slide forward.

Also in the second embodiment, when the battery 1 is accommodated in the accommodating portion of the portable telephone, the ribs 3a on both side surfaces are in close contact with the inner wall surface of the accommodating portion, thereby restricting the movement in the width direction. In addition, since a large frictional force acts between the rib 3a and the inner wall surface of the housing to restrict the movement in the front-rear direction, the battery 1 can be securely attached without rattling, and the battery 1 may be loose. No abnormal noise is generated. [Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIGS. FIG.
Reference numeral 5 denotes a battery 1 according to the third embodiment. This battery 1 also has a battery unit 2B and a resin mold 3
B. However, the resin mold portion 3B is provided so as to expose a part of the upper surface of the battery unit 2B and to cover almost the entirety thereof. 3a are provided at a distance from each other.

The battery unit 2 is shown in FIGS.
As shown in FIG. 7, a battery cell 41 and a circuit board 42
And a connector (electric connection part) 43. The battery cell 41 is formed by providing an electrolyte and electrodes in a tube-shaped container formed by laminating a resin film on both the front and back surfaces of an aluminum foil, and sealing and overlapping the terminals of the container. The battery cell 41 of this laminate pack can be smaller and thinner than the battery cells of the second and third embodiments using a metal container formed by deep drawing. A positive terminal 41a and a negative terminal 41b extend from the battery cell 41.

The circuit board 42 is a board including a charge control circuit and a short-circuit safety circuit connected to the positive terminal 41a and the negative terminal 41b of the battery cell 41. The connector 43 is provided integrally at the center of the front surface of the circuit board 42 and is connected to the positive terminal 41a and the negative terminal 41b of the battery cell 41 via the circuits of the circuit board 42. The connector 43 is inserted into a connector of the mobile phone to electrically connect the battery cell 41 and the mobile phone. Insertion part 43a of connector 43
Is directed toward the front end of the battery cell 41.

As shown in FIG. 15, the battery unit 2B thus constructed is entirely wrapped in the resin mold portion 3B without a gap except for the central portion 41c of the surface of the battery cell 41 and the insertion portion 43a of the connector 43, as shown in FIG. To form a battery 1. Thereby, the battery cell 41, the circuit board 42, and the connector 43 are integrally fixed by the resin mold portion 3B. The method of manufacturing the resin mold portion 3B is the same as that of the first embodiment. The battery unit 2B is set in a mold, and the battery unit 2B is removed except for the front surface center portion 41c.
For example, a polyamide resin is injected into the space formed so as to surround the solidified state and solidified. Then, the ribs 3a are integrally formed at the time of manufacturing the resin mold portion 3B.

According to the battery 1 of the third embodiment, the resin mold portion 3B itself has rigidity and functions as a reinforcing material.
The strength and rigidity of the laminate pack type battery 1 are increased, the impact properties and the like are increased, and the reliability is improved. Also,
Since the resin mold portion 3B also functions as a reinforcing material for the connector 43, the reliability of the connector 43 is also improved. Further, since the resin mold portion 3B itself functions as an insulating material, another insulating member is not required.

Further, since the surface central portion 41c of the battery cell 41 is exposed from the resin mold portion 3B, when the battery cell 41 expands due to a rise in temperature, the surface central portion 41c is expanded outward and escapes. Can be. Therefore, both the battery cell 41 and the resin mold portion 3B can be prevented from being damaged.

The method of mounting the battery 1 of the third embodiment on a mobile phone is the same as that of the first embodiment. Therefore, also in the case of the third embodiment, the movement of the battery 1 in the width direction is restricted by the rib 3a of the battery 1, and the movement of the battery 1 in the front-rear direction is prevented by the fixing rib of the lid. Since the battery 1 is regulated, the battery 1 can be securely mounted without rattling, and no abnormal noise is generated due to the rattling of the battery 1.

[Fourth Embodiment] Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 18 shows a battery 1 according to the fourth embodiment.
The basic configuration of the battery 1 of the fourth embodiment is the same as that of the first embodiment, and the battery 1 of the fourth embodiment also includes a battery unit 2C and a resin mold portion 3C. Have been. The difference between the battery 1 of the fourth embodiment and that of the first embodiment is that
A harness 51 connected to the charge control circuit and the short circuit safety circuit of the circuit board extends from the front end surface of the resin molded portion 3C, and a connector 52 is provided at the tip of the harness 51; The rib 3a for preventing rattling is integrally formed on the front end face and the rear end face of the mold portion 3C.

In the battery 1 of the fourth embodiment, when the battery 1 is mounted in the housing of the portable telephone, the ribs 3a are closely contacted with the front and rear inner wall surfaces of the housing so that the front and rear directions of the battery 1 can be improved. Restrict movement. Therefore,
The battery 1 can be securely attached to the mobile phone without rattling, and no abnormal noise is generated due to the rattling of the battery 1. In each of the embodiments described above, the resin mold portion 3a is formed of a polyamide resin. However, the material of the resin mold portion is not limited to a polyamide resin, and may be formed of another resin such as a polyurethane resin. .

[0043]

As described above, according to the first or second aspect of the present invention, the rib integrally formed on the resin mold portion substantially eliminates the gap between the battery and the housing portion. It is possible to prevent the rattling of the battery in the storage portion, and to prevent the generation of abnormal noise due to the rattling of the battery. In addition, since the resin mold portion having the ribs is soft, the ribs are dimensioned so as to absorb the clearance between the battery and the housing portion, compared with the case where the ribs are integrally formed on the hard housing portion side. And low dimensional accuracy.
As a result, there is also an effect that the manufacturing is easy and the cost can be reduced.

According to the third aspect of the present invention, it is possible to prevent rattling of the battery mounted on the portable terminal, so that it is possible to prevent generation of abnormal noise due to rattling of the battery. There is.

[Brief description of the drawings]

FIG. 1 is a perspective view of a battery according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the battery unit according to the first embodiment.

FIG. 3 is an exploded perspective view of the battery unit according to the first embodiment.

FIG. 4 is a perspective view showing a mold for manufacturing the battery according to the first embodiment.

FIG. 5 is an exploded perspective view of the battery and the mobile phone according to the first embodiment.

FIG. 6 is a perspective view showing the back side of the lid of the mobile phone according to the first embodiment.

FIG. 7 is a perspective view of the mobile phone showing a procedure for mounting the battery according to the first embodiment.

FIG. 8 is a perspective view of the mobile phone showing a procedure for mounting the battery according to the first embodiment.

FIG. 9 is a perspective view of the mobile phone showing a procedure for mounting the battery according to the first embodiment.

FIG. 10 is a perspective view of the mobile phone showing a procedure for mounting the battery according to the first embodiment.

FIG. 11 is a perspective view showing a completed state of the mobile phone after the battery is mounted according to the first embodiment.

FIG. 12 is a perspective view of a battery according to a second embodiment of the present invention.

FIG. 13 is a perspective view of a battery unit according to the second embodiment of the present invention.

FIG. 14 is an exploded perspective view of the battery unit according to the second embodiment.

FIG. 15 is a perspective view of a battery according to a third embodiment of the present invention.

FIG. 16 is a perspective view of a battery unit according to the third embodiment.

FIG. 17 is an exploded perspective view of the battery unit according to the third embodiment.

FIG. 18 is a perspective view of a battery according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery 2, 2A, 2B, 2C Battery unit 3, 3A, 3B, 3C Resin molded part 3a Rib 4, 31, 41 Battery cell 5, 32, 42 Circuit board 6, 43, 52 Connector (electric connection part) 33 Output terminal (electrical connection) K mobile phone (mobile terminal)

Claims (3)

[Claims] 1. A battery cell, comprising: a circuit board electrically connected to each terminal of the battery cell; and an electric connection part electrically connected to the circuit board, and a connection end of the electric connection part. To expose these parts,
A battery in which a circuit board and an electrical connection portion are integrally formed by a resin mold portion, wherein a rib for substantially eliminating a gap with a housing portion in which the battery is mounted is integrally formed in the resin mold portion. Features battery. 2. The battery according to claim 1, wherein the resin mold portion is made of a polyamide or a polyurethane resin. 3. A portable terminal comprising the battery according to claim 1 or 2.