CN218299887U

CN218299887U - Lithium battery overdischarge protection device for lithium battery power supply

Info

Publication number: CN218299887U
Application number: CN202221498234.XU
Authority: CN
Inventors: 庄永基
Original assignee: Shanghai Qiankang Medical Technology Co ltd
Current assignee: Shanghai Qiankang Medical Technology Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2023-01-13
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses a lithium cell overdischarge protection device for lithium cell power supply, including casing, protector and radiator, battery pack is installed to the inner wall of casing, the connecting plate is installed to the inner wall of casing, two sets of protectors are installed at the top of casing, the insulation board is installed to the bottom of plate body, two sets of radiators are installed at the top of casing, and the radiator is located one side of protector. The utility model discloses an install the protector and carry out power-off protection to battery pack, when detection module detected battery pack and had the condition of overdischarge, make micro motor's output rotate and drive the threaded rod and rotate, make screw thread section of thick bamboo shift position when the threaded rod rotates, screw thread section of thick bamboo shift position drives the plate body and removes, the plate body removes and drives insulation board shift position, make a connection piece, no. two connection pieces and No. three connection pieces no longer link into a straight line, can make battery pack outage stop work, reach the purpose of protecting battery pack.

Description

Lithium battery overdischarge protection device for lithium battery power supply

Technical Field

The utility model relates to a lithium battery power supply technical field specifically is a lithium cell overdischarge protection device for lithium battery power supply.

Background

The sleeping Baokang electric stimulation instrument is a miniature electric stimulation physical therapy device suitable for household use, and is characterized by that it adopts digital frequency synthesis technology to produce electric stimulation current of specific simulated brain electrical component, and uses ear back mastoid position electric stimulation method to stimulate nerve, and utilizes digital frequency to synthesize bionic electric stimulation current for improving partial function of human body.

The existing over-discharge protection device has the following defects:

patent document CN215646241U discloses a portable power source of many lithium batteries package power supply, the right item of protection "includes portable power source body and a plurality of lithium cell, the inside at the portable power source body is installed to a plurality of lithium cells, the internally mounted of portable power source body has wireless module of filling, USB power module is installed in the outside of portable power source body, wireless module of filling and USB power module all with a plurality of lithium cell electric connection, install LCD display screen module on the upper surface of portable power source body, install LED lighting module on the lateral wall of portable power source body, the utility model discloses well portable power source body can use a plurality of lithium cell power supplies power, when one of them lithium cell electric quantity is not enough, can supply power by switching to another lithium cell under the circumstances of not cutting off power, avoid breaking off the electronic equipment that is charging in the journey in-process, greatly increased portable power source's duration, whole utility model discloses simple structure, convenient operation, safe and reliable, practicality is high. However, this device does not facilitate rapid power-off protection of the battery in the event of over-discharge during use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell overdischarge protection device for lithium cell power supply to solve the problem that is not convenient for carry out power-off protection that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a lithium battery overdischarge protection device for a lithium battery power supply comprises a shell, protectors and a radiator, wherein a battery assembly is mounted on the inner wall of the shell, a connecting plate is mounted on the inner wall of the shell and located on one side of the battery assembly, and two groups of protectors are mounted on the top of the shell;

the battery pack protector is characterized in that a micro motor is mounted on the inner wall of the protector, a threaded rod is mounted at the output end of the micro motor, a plurality of groups of guide rods are mounted on the inner wall of the shell and located on one side of the battery pack, a support plate is mounted on the outer wall of each guide rod, a plate body is mounted at the bottom of each support plate, a threaded cylinder is mounted on the inner wall of each plate body, and one end of each threaded rod extends into the corresponding threaded cylinder;

the insulation board is installed to the bottom of plate body, two sets of radiators are installed at the top of casing, and the radiator is located one side of protector.

Preferably, the inner wall of the housing is provided with a detection assembly.

Preferably, no. two connecting pieces are installed on the outer walls of the two sides of the battery pack.

Preferably, two groups of first connecting sheets are installed on the outer wall of the connecting plate.

Preferably, two sets of third connecting sheets are installed on the inner wall of the insulating plate.

Preferably, the filter screen is installed at the top of radiator, and the multiunit ventilation groove is installed to the inner wall of radiator, and a micro motor is installed No. one to the outer wall in ventilation groove, and the flabellum is installed to a micro motor's output, and the ventilation pipe is installed to the bottom in ventilation groove, and No. two micro motor of multiunit is installed to the inner wall of radiator.

Preferably, the output end of the second micro motor is provided with a sealing plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an install the protector and carry out power-off protection to battery pack, when the detection assembly detects that battery pack has the condition of overdischarge, make micro motor's output rotate and drive the threaded rod and rotate, make screw section of thick bamboo shift position when the threaded rod rotates, screw section of thick bamboo shift position drives the plate body and moves, the plate body moves and drives the insulation board shift position, the insulation board shift position drives No. three connection pieces and moves, after No. three connection pieces move to certain position, make a connection piece, no. two connection pieces and No. three connection pieces no longer be linked into a straight line, can be quick make battery pack power failure stop work, reach the purpose of protecting battery pack;

2. the utility model discloses an install the radiator and dispel the heat to battery pack, when dispelling the heat and cooling to battery pack, no. two micro motor's output rotates and drives closing plate shift position, the closing plate no longer has the sealing action to the ventilation pipe after removing to certain position, make micro motor's output rotate simultaneously and drive the flabellum and rotate, make the air flow when the flabellum rotates, when the inside back air flow of casing is external, can carry the inside heat of casing, reach the mesh of dispelling the heat and cooling fast to the inside battery pack of casing.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a schematic view of a part of the protector of the present invention;

fig. 4 is a schematic view of a structure of the heat sink of the present invention.

In the figure: 1. a housing; 101. a detection component; 2. a battery assembly; 201. a second connecting sheet; 3. a connecting plate; 301. a first connecting sheet; 4. a protector; 401. a micro motor; 402. a threaded rod; 403. a guide bar; 404. a support plate; 405. a plate body; 406. a threaded barrel; 5. an insulating plate; 501. a third connecting sheet; 6. a heat sink; 601. filtering with a screen; 602. a first micro motor; 603. a fan blade; 604. a ventilation slot; 605. a vent pipe; 606. a second micro motor; 7. and (7) sealing the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1 and 2, a lithium battery overdischarge protection device for a lithium battery power supply, including a housing 1, a protector 4 and a heat sink 6, a battery assembly 2 is installed on an inner wall of the housing 1, the housing 1 provides an installation space for the battery assembly 2, a connection plate 3 is installed on an inner wall of the housing 1, and the connection plate 3 is located on one side of the battery assembly 2, the housing 1 provides an installation space for the connection plate 3, two sets of protectors 4 are installed on a top of the housing 1, when the detection assembly 101 detects that the battery assembly 2 is overdischarged, the protector 4 can enable the battery assembly 2 to be quickly powered off for protection, an insulation plate 5 is installed at a bottom of a plate body 405, the insulation plate 405 provides an installation space for the insulation plate 5, two sets of heat sinks 6 are installed at a top of the housing 1, and the heat sinks 6 are located on one side of the protector 4, the heat sinks 6 can dissipate heat for the internal battery assembly 2, the detection assembly 101 is installed on the inner wall of the housing 1, the housing 1 provides an installation space for the detection assembly 101, two side outer walls of the battery assembly 2 are all installed with a second connection plate 201, two sets of a first connection plate 301, two sets of a connection plate 301 are installed on an outer wall of a connection plate 3, two sets of a connection plate 301, a connection plate 501 are installed on an inner wall of a connection plate 5, and a connection plate 501, a connection plate 501, a connection plate for a straight line for discharging operation of a straight line is performed when a connection plate 501.

Referring to fig. 2 and 3, a micro motor 401 is installed on the inner wall of the protector 4, a threaded rod 402 is installed at the output end of the micro motor 401, a plurality of groups of guide rods 403 are installed on the inner wall of the housing 1, the guide rods 403 are located on one side of the battery assembly 2, a support plate 404 is installed on the outer wall of the guide rods 403, a plate body 405 is installed at the bottom of the support plate 404, a threaded cylinder 406 is installed on the inner wall of the plate body 405, one end of the threaded rod 402 extends into the threaded cylinder 406, the support plate 404 can vertically move when the outer wall of the guide rods 403 vertically moves, when the detection assembly 101 detects that the battery assembly 2 is overdischarged, the output end of the micro motor 401 rotates to drive the threaded rod 402 to rotate, the threaded cylinder 406 moves when the threaded rod 402 rotates, the threaded cylinder 406 moves, the plate body 405 moves by the movement position of the threaded cylinder 406, the plate body 405 moves to drive the movement position of the insulation plate 5, the movement position of the insulation plate 5 drives the third connection plate 501 to move, and the first connection plate 301, the second connection plate 201 and the third connection plate 501 are connected to a straight line, so that the battery assembly 2 can be quickly powered off and the work can be prevented from being protected.

Referring to fig. 2 and 4, a filter screen 601 is installed at the top of the heat sink 6, a plurality of sets of ventilation grooves 604 are installed on the inner wall of the heat sink 6, a first micro motor 602 is installed on the outer wall of the ventilation grooves 604, fan blades 603 are installed at the output end of the first micro motor 602, a ventilation pipe 605 is installed at the bottom of the ventilation grooves 604, a plurality of sets of second micro motors 606 are installed on the inner wall of the heat sink 6, a sealing plate 7 is installed at the output end of the second micro motor 606, when the battery assembly 2 is cooled, the output end of the second micro motor 606 rotates to drive the sealing plate 7 to move, the sealing plate 7 does not have a sealing effect on the ventilation pipe 605 after moving to a certain position, meanwhile, the output end of the first micro motor 602 rotates to drive the fan blades 603 to rotate, the fan blades 603 rotate to make air flow, when the air flows to the outside after the inside of the housing 1, the air flows to carry heat inside the housing 1, and achieve the purpose of rapidly cooling the battery assembly 2 inside the housing 1.

The working principle is that firstly, when the detection assembly 101 detects that the battery assembly 2 has an over-discharge condition, the output end of the micro motor 401 rotates to drive the threaded rod 402 to rotate, when the threaded rod 402 rotates, the threaded cylinder 406 moves to drive the plate body 405 to move, the plate body 405 moves to drive the insulation plate 5 to move, the insulation plate 5 moves to drive the third connecting plate 501 to move, after the third connecting plate 501 moves to a certain position, the first connecting plate 301, the second connecting plate 201 and the third connecting plate 501 are not connected into a straight line any more, the battery assembly 2 can be quickly powered off and stopped to work, the purpose of protecting the battery assembly 2 is achieved, when the battery assembly 2 is cooled, the output end of the second micro motor 606 rotates to drive the sealing plate 7 to move, after the sealing plate 7 moves to a certain position, the ventilation pipe 605 is not sealed, meanwhile, the output end of the first micro motor 602 rotates to drive the fan blades 603 to rotate, when the fan blades 603 rotate, when air flows into the outside after the inside of the casing 1, the heat inside of the casing 1 can be carried, and the purpose of cooling the inside of the battery assembly 2 inside of the casing 1 can be rapidly carried out.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A lithium battery overdischarge protection device for a lithium battery power supply comprises a shell (1), a protector (4) and a radiator (6), and is characterized in that: the battery pack (2) is installed on the inner wall of the shell (1), the connecting plate (3) is located on one side of the battery pack (2), and two groups of protectors (4) are installed on the top of the shell (1);

the battery pack is characterized in that a micro motor (401) is installed on the inner wall of the protector (4), a threaded rod (402) is installed at the output end of the micro motor (401), a plurality of groups of guide rods (403) are installed on the inner wall of the shell (1), the guide rods (403) are located on one side of the battery pack (2), a support plate (404) is installed on the outer wall of each guide rod (403), a plate body (405) is installed at the bottom of each support plate (404), a threaded cylinder (406) is installed on the inner wall of each plate body (405), and one end of each threaded rod (402) extends into the corresponding threaded cylinder (406);

insulation board (5) are installed to the bottom of plate body (405), two sets of radiators (6) are installed at the top of casing (1), and radiator (6) are located one side of protector (4).

2. A lithium battery overdischarge protection device for a lithium battery power supply as claimed in claim 1, wherein: the inner wall of the shell (1) is provided with a detection assembly (101).

3. A lithium battery overdischarge protection device for a lithium battery power supply as claimed in claim 1, wherein: no. two connecting pieces (201) are installed on the outer walls of the two sides of the battery pack (2).

4. An over-discharge protection apparatus for a lithium battery as defined in claim 1, wherein: two sets of connection pieces (301) are installed to the outer wall of connecting plate (3).

5. An over-discharge protection apparatus for a lithium battery as defined in claim 1, wherein: two sets of third connecting sheets (501) are installed on the inner wall of the insulating plate (5).

6. A lithium battery overdischarge protection device for a lithium battery power supply as claimed in claim 1, wherein: filter screen (601) are installed at the top of radiator (6), and multiunit ventilation groove (604) are installed to the inner wall of radiator (6), and No. one micro motor (602) is installed to the outer wall of ventilation groove (604), and flabellum (603) are installed to the output of No. one micro motor (602), and ventilation pipe (605) are installed to the bottom of ventilation groove (604), and No. two micro motor (606) of multiunit are installed to the inner wall of radiator (6).

7. A lithium battery overdischarge protection device for a lithium battery power supply as claimed in claim 6, wherein: and a sealing plate (7) is arranged at the output end of the second micro motor (606).