CN213546467U

CN213546467U - Lithium battery protection device

Info

Publication number: CN213546467U
Application number: CN202023209787.2U
Authority: CN
Inventors: 蒋巴赛
Original assignee: Zhejiang Kaihong Electronics Co ltd
Current assignee: Zhejiang Kaihong Electronics Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-06-25
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a lithium battery protection device, which comprises a lower protection frame body (1) and an upper protection frame body (2) which are arranged on a lithium battery; a plurality of mounting grooves (3) are formed in each inner side surface of the upper protective frame body (2) and the lower protective frame body (1), and a fixed disc (4) is arranged at the notch of each mounting groove (3); an air bag ring (5) is sleeved on the circumference of each fixed disk (4), and an elastic device is arranged between the bottom surface of each fixed disk (4) and the inner bottom surface of each mounting groove (3); a charging terminal (6), a first current detector (7), a first buzzer (8), a discharging terminal (9), a second current detector (10) and a second buzzer (11) are arranged on the top surface of the upper protection frame body (2). The utility model discloses not only can improve the protecting effect, still have overhaul convenience, the radiating effect is good, application scope is wide, long service life and structural stability are high advantage.

Description

Lithium battery protection device

Technical Field

The utility model relates to a battery protective equipment, especially a lithium battery protection device.

Background

Lithium batteries are a type of battery using a non-aqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material, and are widely used in various fields because they can be charged and discharged; when a general lithium battery is used, in order to ensure that the lithium battery can be stably installed, an all-round shell is generally installed outside the lithium battery to serve as a protection device, but when the protection device is used, and the internal lithium battery is overheated, overloaded and the like, the maintenance cannot be carried out, and the maintenance is inconvenient; and the material that general casing used is hard, and can be provided with certain space between lithium cell and the protective housing and be used for making things convenient for putting into of lithium cell, this just makes when the lithium cell is rocked in transportation or proruption, the lithium cell still can with the protective housing between produce the collision, the protective effect is unsatisfactory. Therefore, the protection device for the existing lithium battery has the problems of poor protection effect and inconvenience in maintenance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium battery protection device. The utility model discloses not only can improve the protecting effect, still have the convenient advantage of maintenance.

The technical scheme of the utility model: a lithium battery protection device comprises a lower protection frame body arranged on the bottom surface of a lithium battery and an upper protection frame body arranged on the top surface of the lithium battery; a plurality of uniformly distributed mounting grooves are formed in each inner side surface of the upper protection frame body and the lower protection frame body, and a fixed disc is arranged at the groove opening of each mounting groove; the periphery of each fixed disk is sleeved with an air bag ring, and an elastic device is arranged between the bottom surface of each fixed disk and the inner bottom surface of the mounting groove; a charging wiring terminal is arranged on the top surface of the upper protection frame body, and a first current detector is electrically connected to the charging wiring terminal; a first buzzer is arranged above the charging binding post and electrically connected with the first current detector; a discharge binding post is arranged on one side of the charge binding post, and a second current detector is electrically connected to the discharge binding post; the second current detector is electrically connected with a second buzzer, and the second buzzer is arranged right above the discharge binding post.

In the lithium battery protection device, the elastic device includes a fixing member mounted on the bottom surface of the fixed disk, and a spring is mounted on the bottom surface of the fixing member; one end part of the spring is fixedly arranged on the inner bottom surface of the mounting groove; the inner bottom surface of the mounting groove is provided with a limiting part, and the spring is sleeved on the limiting part.

In the lithium battery protection device, two protection parts which are symmetrically arranged are rotatably mounted on the ports of the upper protection frame body and the lower protection frame body, and the side surface of each protection part facing the lithium battery is arc-shaped; and a plurality of radiating holes which are uniformly distributed are formed in each outer side surface of the upper protection frame body and each outer side surface of the lower protection frame body.

In the lithium battery protection device, a plurality of uniformly distributed telescopic pieces are mounted on both side surfaces of the lower protection frame body, and a lapping block is mounted on the end part of the side surface of the lower protection frame body above each telescopic piece; and a plurality of hasps which are uniformly distributed are arranged on the two side surfaces of the upper protection frame body, and the hasps are matched with the lapping blocks.

In the lithium battery protection device, the inner bottom surfaces of the upper protection frame body and the lower protection frame body are respectively provided with the cushion pad.

Compared with the prior art, the utility model improves the prior protection device for the lithium battery, and the lower protection frame body is arranged at the appointed position of the electric vehicle or the electric vehicle powered by the lithium battery by arranging the upper protection frame body and the lower protection frame body, and then the upper protection frame body is sleeved on the lithium battery, so that the lithium battery can be protected in all aspects from the upper end and the lower end, and the protection effect is improved; when the lithium battery is replaced or overhauled, the upper protective frame body is only required to be taken down, so that the overhaul is facilitated; the inner side surfaces of the upper protection frame body and the lower protection frame body are respectively provided with the plurality of uniformly distributed fixed disks, and each fixed disk is provided with the air bag ring, so that the fixed disks can ensure that the position of the lithium battery is fixed, and meanwhile, a heat dissipation space can be formed among the lithium battery, the upper protection frame body and the lower protection frame body, so that the overall heat dissipation effect is improved; the elastic device is arranged on the fixed disk, so that the position of the fixed disk can be moved by using the elastic device, the fixed disk can be better suitable for lithium batteries with different sizes, and the application range is expanded; the charging terminal and the discharging terminal are arranged on the top surface of the upper protection frame body and are respectively and electrically connected with the first current detector and the second current detector, so that currents at two end parts of the lithium battery can be detected when the lithium battery is used, the phenomena of overload, overheating and the like are avoided, and the service life of the lithium battery is prolonged; and the first buzzer and the second buzzer can give out warning timely when phenomena such as overload and overheating occur, so that the service life of the lithium battery is further prolonged. In addition, the utility model also has the advantages that the limiting part is arranged on the inner bottom surface of the mounting groove, one end part of the spring is sleeved on the limiting part, and the movement and the position of the spring can be guided and limited by the limiting part, so that the use stability is improved; the limiting piece can avoid the phenomenon that the fixed disc moves over the head; by arranging the protection pieces at the ports of the upper protection frame body and the lower protection frame body, elastic shock absorption can be formed between the ports of the upper protection frame body and the lower protection frame body and the lithium battery by using the protection pieces, so that the protection effect is further improved; the heat dissipation holes are formed in the side surfaces of the upper protection frame body and the lower protection frame body, so that heat flow between the lithium battery and the outside air can be increased by utilizing the heat dissipation holes, and the heat dissipation effect is further improved; the telescopic piece is arranged on the side face of the lower protection frame body, and the upper protection frame body and the lower protection frame body are stably connected together through the lapping block and the hasp, so that the use stability is improved; through setting up the blotter, holistic safeguard effect can further be improved. Therefore, the utility model discloses not only can improve the protecting effect, still have the advantage that the maintenance is convenient, the radiating effect is good, application scope is wide, long service life and structural stability are high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of the upper guard frame;

FIG. 3 is a schematic structural view of a fixing disk;

fig. 4 is a partially enlarged view of a portion a in fig. 1.

The labels in the figures are: 1-lower protection frame body, 2-upper protection frame body, 3-installation groove, 4-fixed disc, 5-air bag ring, 6-charging binding post, 7-first current detector, 8-first buzzer, 9-discharging binding post, 10-second current detector, 11-second buzzer, 12-fixing piece, 13-spring, 14-limiting piece, 15-protection piece, 16-heat dissipation hole, 17-telescopic piece, 18-lapping block, 19-hasp and 20-buffer cushion.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. A lithium battery protection device is composed as shown in figures 1 to 4, and comprises a lower protection frame body 1 arranged on the bottom surface of a lithium battery and an upper protection frame body 2 arranged on the top surface of the lithium battery; a plurality of uniformly distributed mounting grooves 3 are formed in each inner side surface of the upper protective frame body 2 and the lower protective frame body 1, and a fixed disc 4 is arranged at the notch of each mounting groove 3; an air bag ring 5 is sleeved on the circumference of each fixed disk 4, and an elastic device is arranged between the bottom surface of each fixed disk 4 and the inner bottom surface of the mounting groove 3; a charging wiring column 6 is arranged on the top surface of the upper protection frame body 2, and a first current detector 7 is electrically connected to the charging wiring column 6; a first buzzer 8 is arranged above the charging terminal 6, and the first buzzer 8 is electrically connected with the first current detector 7; a discharge binding post 9 is arranged on one side of the charging binding post 6, and the discharge binding post 9 is electrically connected with a second current detector 10; the second current detector 10 is electrically connected with a second buzzer 11, and the second buzzer 11 is arranged right above the discharge terminal 9.

The elastic device comprises a fixing piece 12 arranged on the bottom surface of the fixed disc 4, and a spring 13 is arranged on the bottom surface of the fixing piece 12; one end part of the spring 13 is fixedly arranged on the inner bottom surface of the mounting groove 3; a limiting piece 14 is arranged on the inner bottom surface of the mounting groove 3, and a spring 13 is sleeved on the limiting piece 14; two symmetrically arranged protection pieces 15 are rotatably mounted on the ports of the upper protection frame body 2 and the lower protection frame body 1, and the side surface of each protection piece 15 facing the lithium battery is arc-shaped; a plurality of radiating holes 16 which are uniformly distributed are formed in each outer side surface of the upper protective frame body 2 and the lower protective frame body 1; a plurality of uniformly distributed telescopic pieces 17 are arranged on two side surfaces of the lower protection frame body 1, and a lapping block 18 is arranged at the end part of the side surface of the lower protection frame body 1 above each telescopic piece 17; a plurality of hasps 19 which are uniformly distributed are arranged on two side surfaces of the upper protective frame body 2, and the hasps 19 are matched with the lapping blocks 18; and buffer pads 20 are arranged on the inner bottom surfaces of the upper protective frame body 2 and the lower protective frame body 1.

The working principle is as follows: when the lithium battery protection frame is used, the lower protection frame body 1 is placed at a position where a lithium battery needs to be installed, then the lithium battery is placed in the lower protection frame body 1, and the fixed disc 4 can be attracted to the outer side face of the lithium battery; then, the upper protection frame body 2 is covered above the lithium battery, so that the fixed disc 4 on the inner side surface of the upper protection frame body 2 can be adsorbed on the outer side surface of the lithium battery, then the length of the telescopic piece 17 is adjusted according to the height of the lithium battery, and the lapping block 18 on the telescopic piece 17 is buckled on the hasp 19, so that the upper protection frame body 2 and the lower protection frame body 1 are fixedly connected together by using the telescopic piece 17, the comprehensive protection of the lithium battery is realized, and meanwhile, the stability of the position of the lithium battery can be ensured; when the lithium battery receives external impact or distance shaking, firstly, the airbag ring 5 on the fixed disc 4 can slow down the impact force to a certain extent; the fixing disc 4 at the corresponding position can push the fixing piece 12 to move to a certain extent while shaking, the spring 13 can be stretched or compressed when the fixing disc 4 moves, the movement of the fixing piece 12 can be slowed down under the reaction force of the spring 13, and then the movement of the fixing disc 4 can be limited, so that the purpose of limiting the position of the lithium battery through the fixing disc 4 is achieved, and a certain protection effect is achieved; the same arrangement of the cushion pad 20 and the protection member 15 can protect both upper and lower surfaces of the lithium battery and the contact area between the lithium battery and the ports of the upper protection frame 2 and the lower protection frame 1, respectively, and the overall protection performance is improved.

When the lithium battery is used for charging and discharging, the first current detector 7 on the charging post 6 and the second current detector 10 on the discharging post 9 can detect the current passing through the corresponding charging or discharging process, and send the detected data to an internally installed central control unit (the central control unit used in the utility model can specifically use FX2C-20MRD, Cortex-R8, Cortex-M7 and other types of programmable controllers), and the central control unit compares the alarm value with the alarm value set inside, and when the alarm value is more than or equal to the alarm value, the corresponding first buzzer 8 or the corresponding second buzzer 11 is controlled to start and give an alarm, so that a user is reminded of stopping using the lithium battery, and the use safety is improved; and the lithium cell can transmit to last protection framework 2 and between the protection framework 1 down through the shell of lithium cell at the in-process of charge-discharge between the inside heat that produces, wherein most heat can transmit to the outside air through last protection framework 2 and the louvre 16 on the protection framework 1 surface down, some heat can distribute away through the opening part on every two adjacent fixed disks 4 space from last protection framework 2 and the protection framework 1 down, thereby guaranteed faster rate of heat dissipation and better radiating effect.

Claims

1. A lithium battery protection device is characterized in that: the lithium battery protection device comprises a lower protection frame body (1) arranged on the bottom surface of a lithium battery and an upper protection frame body (2) arranged on the top surface of the lithium battery; a plurality of uniformly distributed mounting grooves (3) are formed in each inner side surface of the upper protective frame body (2) and the lower protective frame body (1), and a fixed disc (4) is arranged at the notch of each mounting groove (3); an air bag ring (5) is sleeved on the circumference of each fixed disk (4), and an elastic device is arranged between the bottom surface of each fixed disk (4) and the inner bottom surface of each mounting groove (3); a charging wiring post (6) is arranged on the top surface of the upper protection frame body (2), and a first current detector (7) is electrically connected to the charging wiring post (6); a first buzzer (8) is arranged above the charging binding post (6), and the first buzzer (8) is electrically connected with the first current detector (7); a discharge binding post (9) is arranged on one side of the charge binding post (6), and the discharge binding post (9) is electrically connected with a second current detector (10); the second current detector (10) is electrically connected with a second buzzer (11), and the second buzzer (11) is arranged right above the discharge binding post (9).

2. A lithium battery protection device according to claim 1, characterized in that: the elastic device comprises a fixing piece (12) arranged on the bottom surface of the fixed disc (4), and a spring (13) is arranged on the bottom surface of the fixing piece (12); one end part of the spring (13) is fixedly arranged on the inner bottom surface of the mounting groove (3); a limiting piece (14) is arranged on the inner bottom surface of the mounting groove (3), and the spring (13) is sleeved on the limiting piece (14).

3. A lithium battery protection device according to claim 1, characterized in that: two symmetrically arranged protection pieces (15) are rotatably arranged on the ports of the upper protection frame body (2) and the lower protection frame body (1), and the side surface of each protection piece (15) facing the lithium battery is arc-shaped; a plurality of radiating holes (16) which are uniformly distributed are formed in each outer side surface of the upper protective frame body (2) and each outer side surface of the lower protective frame body (1).

4. A lithium battery protection device according to claim 1, characterized in that: a plurality of uniformly distributed telescopic pieces (17) are arranged on two side surfaces of the lower protection frame body (1), and a lapping block (18) is arranged at the end part of the side surface of the lower protection frame body (1) above each telescopic piece (17); both sides of the upper protective frame body (2) are provided with a plurality of hasps (19) which are uniformly distributed, and the hasps (19) are matched with the lapping blocks (18).

5. A lithium battery protection device according to any one of claims 1 to 4, characterized in that: and cushion pads (20) are arranged on the inner bottom surfaces of the upper protective frame body (2) and the lower protective frame body (1).