CN219801228U

CN219801228U - Lithium battery capable of effectively preventing self-discharge

Info

Publication number: CN219801228U
Application number: CN202223306263.4U
Authority: CN
Inventors: 李洁雅; 王健; 田野
Original assignee: Jiangsu Fuwei Energy Co ltd
Current assignee: Jiangsu Fuwei Energy Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-10-03
Anticipated expiration: 2032-12-09

Abstract

The utility model relates to the technical field of lithium batteries and discloses a lithium battery capable of effectively preventing self-discharge, which comprises a shell, wherein a mounting hole is formed in the shell, a protection device is mounted at the bottom of the shell, a battery core is mounted in the shell, a monitoring device is fixedly connected to the top of the battery core, a circuit breaking device is mounted at the top of the monitoring device, a charging and discharging device is fixedly connected to the top of the circuit breaking device, the charging and discharging device comprises a power wire, a connector and a contact pin, the power wire is mounted on the side face of a circuit board, the top of the power wire is fixedly connected with the connector, the contact pin is mounted in the connector, the automatic power-off is performed on the lithium battery which does not work for a long time by the aid of a blocking device, the current in a circuit is reduced, the service life of the lithium battery is prolonged, potential safety hazards are reduced, the strength of the shell can be enhanced by the aid of transverse and longitudinal stress strength of the shell is improved by the aid of staggered longitudinal grooves and transverse grooves.

Description

Lithium battery capable of effectively preventing self-discharge

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery capable of effectively preventing self-discharge.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as anode and cathode materials and uses nonaqueous electrolyte solution, and according to the current scientific technology level, the service life of the lithium battery is also reduced along with the increase of the cycle times of charge and discharge, so that the self-discharge of the lithium battery is prevented when the battery is not used, firstly, the service life loss of the battery can be reduced, and secondly, the potential safety hazard can be avoided.

However, the existing lithium battery is used for blocking self-discharge of the lithium battery through an external control board, the mode is that the lithium battery is connected through a longer lead, tiny current output by the lithium battery is often not accurately monitored, and the use scene of the lithium battery lacking a built-in self-discharge device is limited.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a lithium battery that effectively prevents self-discharge, so as to solve the above-mentioned problems in the prior art.

The utility model provides the following technical scheme: the utility model provides an effectively prevent lithium cell of self-discharge, includes the shell, set up the mounting hole on the shell, protection device is installed to the bottom of shell, the internally mounted of shell has the electric core, the top fixedly connected with monitoring devices of electric core, breaker is installed at the top of monitoring devices, breaker's top fixedly connected with charge-discharge device, the quantity of mounting hole is four groups;

further, a pressure release valve is arranged on the side face of the shell, a transverse groove and a vertical groove are formed in the top surface of the shell, and the transverse groove and the vertical groove are staggered.

Further, monitoring devices includes circuit board, first wire, control appearance and temperature-sensing appearance, the inside at the shell is installed to the circuit board, the top of circuit board carries out fixed connection through first wire and electric core, install the control appearance on the circuit board, temperature-sensing appearance is installed on the right side of control appearance, and the model of control appearance is WJZH-802, can carry out the circular telegram control to the electro-magnet when only detecting tiny current for a long time to realize the control of breaking circuit to the electric core, and temperature-sensing appearance also can provide a set of reference data.

Further, the circuit breaking device comprises an electromagnet, a second wire, a guide rail, a spring, an iron block, a groove and a third wire, wherein the electromagnet is arranged on the left side of the control instrument and fixedly connected with the circuit board through the second wire, the guide rail is arranged on the right side of the electromagnet, the iron block is arranged in the guide rail, the iron block is provided with the groove, the iron block is fixedly connected with the circuit board through the third wire, magnetic force is generated after the electromagnet is electrified, the iron block is attracted to move along the guide rail to the direction of the electromagnet, and after the electromagnet is powered off, the iron block resets under the tension of the spring and is separated from the electromagnet.

Further, the charging and discharging device comprises a power line, a connector and a contact pin, wherein the power line is arranged on the side face of the circuit board, the connector is fixedly connected to the top end of the power line, the contact pin is arranged in the connector, and the whole lithium battery circuit can be closed through the connection contact pin, so that the charging and discharging cycle is achieved.

Further, the groove corresponds to the coil position of the electromagnet, the third wire can move on the guide rail along with the iron block, and the formed groove is matched with the coil position of the electromagnet, so that the iron block can be exactly adsorbed on the electromagnet to form a passage.

The utility model has the technical effects and advantages that:

1. according to the utility model, the blocking device is arranged to automatically power off the lithium battery which does not work for a long time, so that the current in a circuit is reduced, the service life of the lithium battery is prolonged, and the potential safety hazard is reduced.

2. The utility model can strengthen the strength of the shell by arranging the staggered longitudinal grooves and the transverse grooves, thereby being beneficial to improving the transverse and longitudinal stress strength of the shell.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a side view of the overall structure of the present utility model.

Fig. 3 is a schematic structural diagram of a monitoring device according to the present utility model.

Fig. 4 is a schematic structural view of a circuit breaking device according to the present utility model.

The reference numerals are: 1. a housing; 2. a mounting hole; 3. a protection device; 4. a battery cell; 5. a monitoring device; 6. a circuit breaking device; 7. a charge-discharge device; 101. a pressure release valve; 102. a transverse slot; 103. a vertical groove; 501. a circuit board; 502. a first wire; 503. a control instrument; 504. a temperature detector; 601. an electromagnet; 602. a second wire; 603. a guide rail; 604. a spring; 605. iron blocks; 6051. a groove; 606. a third wire; 701. a power line; 702. a joint; 703. and (5) inserting pins.

Detailed Description

The embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the present utility model, and the configurations of the structures described in the following embodiments are merely examples, and the lithium battery for effectively preventing self-discharge according to the present utility model is not limited to the structures described in the following embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

Referring to fig. 1-4, the utility model provides a lithium battery capable of effectively preventing self-discharge, which comprises a shell 1, wherein a mounting hole 2 is formed in the shell 1, a protection device 3 is arranged at the bottom of the shell 1, a battery core 4 is arranged in the shell 1, a monitoring device 5 is fixedly connected to the top of the battery core 4, a circuit breaking device 6 is arranged at the top of the monitoring device 5, a charging and discharging device 7 is fixedly connected to the top of the circuit breaking device 6, and the number of the mounting holes 2 is four;

referring to fig. 2, a relief valve 101 is opened at a side of a housing 1, and a lateral groove 102 and a vertical groove 103 are opened at a top surface of the housing 1, and the lateral groove 102 and the vertical groove 103 are staggered.

Referring to fig. 3, the monitoring device 5 includes a circuit board 501, a first wire 502, a controller 503 and a temperature detector 504, the circuit board 501 is installed in the housing 1, the top of the circuit board 501 is fixedly connected with the battery cell 4 through the first wire 502, the controller 503 is installed on the circuit board 501, the temperature detector 504 is installed on the right side of the controller 503, the model of the controller 503 is WJZH-802, and the electromagnet 601 can be electrified and controlled when only a tiny current is detected for a long time, so that the circuit breaking control of the battery cell 4 is realized, and the temperature detector 504 can also provide a group of reference data.

Referring to fig. 4, the circuit breaking device 6 includes an electromagnet 601, a second wire 602, a guide rail 603, a spring 604, an iron block 605, a groove 6051 and a third wire 606, the electromagnet 601 is mounted on the left side of the controller 503, the electromagnet 601 is fixedly connected with the circuit board 501 through the second wire 602, the guide rail 603 is mounted on the right side of the electromagnet 601, the iron block 605 is mounted in the guide rail 603, the groove 6051 is formed in the iron block 605, the iron block 605 is fixedly connected with the circuit board 501 through the third wire 606, a magnetic force is generated after the electromagnet 601 is electrified, the iron block 605 is attracted to move along the guide rail 603 towards the electromagnet 601, and after the electromagnet is powered off, the iron block 605 is reset under the tension of the spring 604 and is separated from the electromagnet 601.

Referring to fig. 3, the charging and discharging device 7 includes a power line 701, a connector 702 and a contact pin 703, the power line 701 is mounted on a side surface of the circuit board 501, the connector 702 is fixedly connected to a top end of the power line 701, the contact pin 703 is mounted in the connector 702, and the entire lithium battery circuit can be closed through the connection of the contact pin 703, so as to achieve a charging and discharging cycle.

Referring to fig. 4, the groove 6051 corresponds to the coil position of the electromagnet 601, the third wire 606 can move along with the iron block 605 on the guide rail 603, and the opened groove 6051 is matched with the coil position of the electromagnet 601, so that the iron block 605 can be exactly attracted to the electromagnet 601, and a passage is formed.

The working principle of the utility model is as follows: when the utility model is used, the shell 1 is fixed through four groups of mounting holes 2, the transverse grooves 102 and the vertical grooves 103 on the shell 1 can enhance the integral strength of the shell 1, the protection device 3 can provide a bottom protection effect for the shell 1, the contact pins 703 are connected, the circuit of the whole lithium battery can be closed through the charging and discharging device 7, the cycle of charging and discharging is achieved, when the lithium battery is in standby for a long time and does not work, when only a small current is detected, the electromagnet 601 can be controlled by the controller 503 with the model number WJZH-802, the electromagnet 601 can generate magnetic force after being electrified, thereby attracting the iron block 605 to move towards the electromagnet 601 along the guide rail 603, the third lead 606 is longer and the material is softer, therefore, the iron block 605 can move on the guide rail 603, the position of the groove 6051 and the coil of the electromagnet 601 are matched, the iron block 605 can be exactly absorbed on the electromagnet 601 to form a passage, when the electromagnet 601 is powered off by the controller 503, the iron block 605 can be reset on the guide rail 603 under the tension of the spring 604 and can be separated from the electromagnet 601, thereby realizing the open circuit control or the passage control of the battery cell 4, further realizing the self discharge protection of the lithium battery, the temperature detector 504 can also provide a group of reference data, and when the temperature in the battery cell 4 is too high or the monitoring device 5 is overheated, the pressure accumulated in the interior can be discharged by the pressure relief valve 101, so that the working procedure is ended.

Finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A lithium battery effective against self-discharge, comprising a casing (1), characterized in that: the utility model discloses a battery pack, including shell (1), protection device, battery pack, circuit breaker (6) are installed at the top of monitoring devices (5), protection device (3) are installed to the bottom of shell (1), internally mounted of shell (1) has electric core (4), the top fixedly connected with monitoring devices (5) of electric core (4), circuit breaker (6) are installed at the top, charge-discharge device (7) are fixedly connected with at the top of circuit breaker (6), the quantity of mounting hole (2) is four groups.

2. A lithium battery effective to prevent self-discharge as defined in claim 1, wherein: the side of shell (1) has seted up relief valve (101), transverse groove (102) and vertical groove (103) have been seted up on the top surface of shell (1), transverse groove (102) and vertical groove (103) are crisscross.

3. A lithium battery effective to prevent self-discharge as defined in claim 1, wherein: the monitoring device (5) comprises a circuit board (501), a first lead (502), a control instrument (503) and a temperature detector (504), wherein the circuit board (501) is installed inside the shell (1), the top of the circuit board (501) is fixedly connected with the battery cell (4) through the first lead (502), the control instrument (503) is installed on the circuit board (501), and the temperature detector (504) is installed on the right side of the control instrument (503).

4. A lithium battery effective to prevent self-discharge as defined in claim 1, wherein: the circuit breaking device (6) comprises an electromagnet (601), a second wire (602), a guide rail (603), a spring (604), an iron block (605), a groove (6051) and a third wire (606), wherein the electromagnet (601) is arranged on the left side of the controller (503), the electromagnet (601) is fixedly connected with the circuit board (501) through the second wire (602), the guide rail (603) is arranged on the right side of the electromagnet (601), the iron block (605) is arranged in the guide rail (603), the groove (6051) is formed in the iron block (605), and the iron block (605) is fixedly connected with the circuit board (501) through the third wire (606).

5. A lithium battery effective to prevent self-discharge as defined in claim 1, wherein: the charging and discharging device (7) comprises a power line (701), a connector (702) and a contact pin (703), wherein the power line (701) is arranged on the side face of the circuit board (501), the top end of the power line (701) is fixedly connected with the connector (702), and the contact pin (703) is arranged in the connector (702).

6. A lithium battery effective to prevent self-discharge as defined in claim 4, wherein: the groove (6051) corresponds to the coil position of the electromagnet (601), and the third wire (606) can move on the guide rail (603) along with the iron block (605).