CN201122632Y

CN201122632Y - Rechargeable battery

Info

Publication number: CN201122632Y
Application number: CNU2007201213301U
Authority: CN
Inventors: 李智; 董超祺
Original assignee: GUANGZHOU ZHANHUI ELECTRONIC CO Ltd
Current assignee: GUANGZHOU ZHANHUI ELECTRONIC CO Ltd
Priority date: 2007-07-05
Filing date: 2007-07-05
Publication date: 2008-09-24
Anticipated expiration: 2017-07-05

Abstract

The utility model discloses a rechargeable battery, which comprises at least a battery cell (2), a casing body (23) for covering the battery cell (2), an anode and a cathode (8) of the battery, and a charging and discharging circuit comprising a charging and discharging protection circuit, wherein the charging and discharging circuit is integrated on a circuit board (4) and packaged in the battery casing body (23) together with the battery cell (2), a charging socket (3) is concavely arranged on the side wall surface of the battery, and the two terminals of the charging socket (3) are respectively connected with the charging anode and the charging cathode of the charging and discharging circuit. The rechargeable battery of the utility model can also provide two power supply methods through combining the two anodes and the one cathode which are respectively arranged at the both ends of the battery. The rechargeable lithium battery structure of the utility model has the advantages that the rechargeable battery can be conveniently charged, is convenient for carrying and can be compatible with the structures of various electric appliances.

Description

Chargeable battery

Technical field

The utility model belongs to the chargeable battery technical field, relates in particular to a kind of structure improved secondary cell of charging socket that has.

Background technology

Chargeable battery is a kind of high-energy-density that has, high discharge voltage, in light weight, volume is little, portable characteristics, at electronics, field of household appliances, all be used widely in the IT product field, generally speaking, when chargeable battery charges at needs, to finish charging process by specific charger, described charger generally includes an adaptive battery case, and position and be electrically connected by spring compression, owing to adopt spring compression in the battery case, use and with the passing of time just can cause the spring variation, make the reliability decrease of connection, be difficult to guarantee long-time operate as normal.

On the other hand, the general structure of present normally used battery is a proper utmost point, the other end is a negative pole, its supply power mode only has a kind of, and battery case is of all kinds in small electric apparatus on the market and the IT product, therefore, the battery of single supply power mode obviously can not adapt to the needs of the diversified electric equipment products of this structure, and there is defective in its compatibility.

The utility model content

The technical problems to be solved in the utility model is: a kind of chargeable battery reliable and that be convenient to charge that connects is provided; Another technical problem to be solved in the utility model is that a kind of chargeable battery with two kinds of different supply power modes is provided.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is such:

A kind of chargeable battery; comprise: the positive pole and the negative pole of housing, the battery of at least one electric core, the described electric core of parcel, include the circuit that charges and discharge of charge-discharge protection circuit; the described circuit that charges and discharge is integrated on the circuit board and with described electric core and is packaged in the battery container, it is characterized in that:

Described battery side wall is arranged with a charging socket, and two terminals of this charging socket join with described charging positive pole and the charging negative pole that charges and discharge circuit respectively.

The positive pole of described battery comprises first positive pole and second positive pole that is arranged with in the middle of the battery other end that is convexly equipped with in the middle of battery one end face, the negative pole of described battery is arranged on the described second anodal identical battery end face and is ring-type around described second positive pole, constitutes described chargeable battery thus by first anodal and first supply power mode that negative pole is formed that lays respectively at the battery two ends with by second positive pole that is positioned at the same end face of battery and second supply power mode that negative pole is formed.

Described circuit board is fixed on the protective stent and with described electric core and is packaged in contiguous negative pole one end in the battery container, and described circuit board is connected and is connected with the electric core negative pole of battery by negative pole nickel sheet with second positive pole with first positive pole of described battery by anodal nickel sheet respectively.

Described protective stent is a cylindrical body, it comprises the cylindrical shell that is cylindrical shape, the base plate that central authorities have the hole, described charging socket, circuit board and second positive pole are separately fixed in this cylindrical body from the inside to surface, and the negative pole of described ring-type then is installed in the lateral surface of base plate.

The skin of described battery body adopts thermoplastic tube big envelope or battery labeling to be packaged into integral body.

The aperture position of the corresponding described charging socket of the sidewall of described protective stent offers can be for the hole of charging plug insertion.

Described charge-discharge protection circuit contains li-ion cell protection chip U1, field effect transistor U3-A, U3-B, U4-A, U4-B, described field effect transistor U3-A and U3-B are connected in series mutually, and the signal input end of field effect transistor U3-A and U3-B is connected signal output part CO and the DO of chip U1 respectively; Field effect transistor U4-A, U4-B are respectively with U3-A, U3-B and connect.

Compared with prior art, adopt rechargeable type lithium battery structure of the present utility model can have following advantage:

1. owing to be provided with charging socket, when battery need charge, can directly use power transformer to charge in the battery side; Perhaps battery case one side at electrical equipment is provided with corresponding jack, just can not need take out battery and directly charges, and is not only convenient but also reliable;

2. because battery design has two kinds of supply power modes, therefore can be complementary, have compatibility with the structure of various electric equipment products.

3. because of product has the plastic shell protection, can form more reliable protection to inside battery, the loss prevention performance strengthens.

Description of drawings

Fig. 1 is the structure explosive view of the utility model chargeable battery embodiment;

Fig. 2 is the cutaway view of chargeable battery embodiment of the present utility model;

Fig. 3 is the negative pole end partial sectional view of chargeable battery embodiment of the present utility model.

Fig. 4 is the circuit theory diagrams that charge and discharge of an embodiment of the present utility model.

Embodiment:

Below in conjunction with Figure of description and embodiment the utility model is further described:

As shown in Figures 1 and 2, the chargeable battery that the utility model relates to, comprise: at least one electric core 2, wrap up the housing 23 of described electric core 2, the positive pole of battery and negative pole 8, the circuit that charges and discharge that includes charge-discharge protection circuit, the described circuit that charges and discharge is integrated on the circuit board 4 and with described electric core 2 and is packaged in the battery container 23, the anodal contact of battery is connected on the circuit board 4 by an anodal nickel sheet 6, at described anodal nickel sheet and housing 23, use first fireproofed paper 22 respectively between the electricity core 2, second fireproofed paper 24 separates, between first 11 at the positive pole and electric core 2, separate with the 3rd fireproofed paper 21, as shown in Figure 1, electric core negative pole by a metallic nickel sheet 7 with charge and discharge that the B-utmost point joins in the circuit; Wherein: described battery side wall is arranged with a charging socket 3, and two terminals of this charging socket 3 join with described charging positive pole and the charging negative pole that charges and discharge circuit respectively.

Please refer to Fig. 2 and Fig. 3, in the present embodiment, the positive pole of chargeable battery comprises first positive pole 11 and second positive pole 12 that is arranged with in the middle of the battery other end that is convexly equipped with in the middle of battery one end face, the negative pole 8 of described battery is arranged on the battery end face identical with described second anodal 12 and is ring-type around described second positive pole 12, constitutes first supply power mode that described chargeable battery is made up of first anodal 11 and the negative pole 8 that lay respectively at the battery two ends thus and by second positive pole 12 that is positioned at the same end face of battery and second supply power mode that negative pole 8 is formed.

As shown in figures 1 and 3, described circuit board 4 is fixed on the protective stent 5 and with described electric core 2 and is packaged in battery container 23 interior contiguous negative pole 8 one ends, and described circuit board 4 is connected and passes through negative pole nickel sheet 7 with second anodal 12 with first positive pole 11 of described battery by anodal nickel sheet 6 respectively and is connected with the electric core negative pole of battery.

Described protective stent 5 is a cylindrical body, it comprises the cylindrical shell 51 that is cylindrical shape, the base plate 52 that central authorities have the hole, described charging socket 3, circuit board 4 and second positive pole 12 are separately fixed in this cylindrical body from the inside to surface, 8 lateral surfaces that are fixed on base plate 52 of the negative pole of ring-type, the aperture position of the corresponding described charging socket 3 of the sidewall of described protective stent 5 offer can be for the hole of charging plug insertion.

As shown in Figure 1, the skin of described battery body adopts thermoplastic tube big envelope or battery labeling to be packaged into integral body.

As shown in Figure 4, the charge-discharge protection circuit of chargeable battery of the present utility model contains li-ion cell protection chip U1, field effect transistor U3-A, U3-B, U4-A, U4-B, described field effect transistor U3-A and U3-B are connected in series mutually, and the signal input end of field effect transistor U3-A and U3-B is connected signal output part CO and the DO of chip U1 respectively; Field effect transistor U4-A, U4-B are respectively with U3-A, U3-B and connect.

An embodiment of the present utility model adopts single-unit lithium electric protection IC S8261; for the energy heavy-current discharge, adopt two groups of field effect transistor protection circuits, the band DC plug; to battery charge, table 1 is the basic parameter of power brick of the rechargeable type lithium battery of the foregoing description by input plug.

Table 1: the basic parameter of power brick

Project	Numerical value	Response time
Project	Numerical value	Response time	The charging input voltage	4.2V max
The charging input current	2000mA max		The charging input voltage	4.2V max
The charging input current	2000mA max		Detection voltage overcharges	4.325±0.025V	1.2s
Releasing voltage overcharges	4.075±0.025V	/	Detection voltage overcharges	4.325±0.025V	1.2s
Releasing voltage overcharges	4.075±0.025V	/	Overdischarge detects voltage	2.5±0.05V	144ms
Voltage is removed in overdischarge	2.9±0.05V	/	Overdischarge detects voltage	2.5±0.05V	144ms
Voltage is removed in overdischarge	2.9±0.05V	/	Overcurrent detects	7.0±0.5A(0.15V)	9ms
Short-circuit protection	Have	320us	Overcurrent detects	7.0±0.5A(0.15V)	9ms
Short-circuit protection	Have	320us	Overheat protector	N/A	/

More than listed preferred embodiment be intended to clearly demonstrate design of the present utility model and technical scheme.The enforcement of the utility model is not limited thereto.Any based on design of the present utility model and technical scheme, and need not creative work, the simple deduction or replace carried out, perhaps this utility model is applied to other chargeable battery structure situation, all belong to the enforcement of the utility model.

Claims

1. chargeable battery; comprise: the positive pole and the negative pole (8) of housing (23), the battery of at least one electric core (2), the described electric core of parcel (2), include the circuit that charges and discharge of charge-discharge protection circuit; the described circuit that charges and discharge is integrated on the circuit board (4) and in described electric core (2) is packaged in battery container (23), it is characterized in that:

Described battery side wall is arranged with a charging socket (3), and two terminals of this charging socket (3) join with described charging positive pole and the charging negative pole that charges and discharge circuit respectively.

2. chargeable battery as claimed in claim 1, it is characterized in that: the positive pole of described battery comprises and is convexly equipped with first positive pole (11) in the middle of battery one end face and is arranged with second positive pole (12) in centre, battery other end, the negative pole of described battery (8) is arranged on the battery end face identical with described second positive pole (12) and is ring-type around described second positive pole (12), constitutes first supply power mode that described chargeable battery is made up of first positive pole (11) that lays respectively at the battery two ends and negative pole (8) and second supply power mode of being made up of second positive pole (12) that is positioned at the same end face of battery and negative pole (8) thus.

3. chargeable battery as claimed in claim 1, it is characterized in that: described circuit board (4) is fixed on protective stent (5) and upward and with described electric core (2) is packaged in interior contiguous negative pole (8) one ends of battery container (23), and described circuit board (4) is connected with second positive pole (12) with first positive pole (11) of described battery by anodal nickel sheet (6) respectively and is connected with the electric core negative pole of battery by negative pole nickel sheet (7).

4. chargeable battery as claimed in claim 3, it is characterized in that: described protective stent (5) is a cylindrical body, it comprises the cylindrical shell (51) that is cylindrical shape, the base plate (52) that central authorities have the hole, described charging socket (3), circuit board (4) and second positive pole (12) are separately fixed in this cylindrical body from the inside to surface, and the negative pole of described ring-type (8) then is installed in the lateral surface of base plate (52).

5. as claim 1,2 or 3 described chargeable batteries, it is characterized in that: the skin of described battery body adopts thermoplastic tube big envelope or battery labeling to be packaged into integral body.

6. chargeable battery as claimed in claim 3 is characterized in that: the aperture position of the corresponding described charging socket of the sidewall of described protective stent (5) (3) offers can be for the hole of charging plug insertion.

7. as claim 1,2 or 3 described chargeable batteries, it is characterized in that: described charge-discharge protection circuit contains li-ion cell protection chip U1, field effect transistor U3-A, U3-B, U4-A, U4-B, described field effect transistor U3-A and U3-B are connected in series mutually, and the signal input end of field effect transistor U3-A and U3-B is connected signal output part CO and the DO of chip U1 respectively; Field effect transistor U4-A, U4-B are respectively with U3-A, U3-B and connect.