CN216597815U - Lithium battery with overvoltage protection - Google Patents
Lithium battery with overvoltage protection Download PDFInfo
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- CN216597815U CN216597815U CN202121960291.0U CN202121960291U CN216597815U CN 216597815 U CN216597815 U CN 216597815U CN 202121960291 U CN202121960291 U CN 202121960291U CN 216597815 U CN216597815 U CN 216597815U
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- lithium battery
- fixed
- assembly
- overvoltage protection
- protection box
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model belongs to the technical field of lithium batteries, and particularly relates to a lithium battery with overvoltage protection, which comprises a lithium battery pack and an overvoltage protection circuit board, wherein the lithium battery pack is formed by connecting two lithium batteries in series, and the lithium battery also comprises a protection box, a top cover and a sealing assembly; the inner bottom surface of the protection box is fixed with a support column, the inner wall of the protection box is fixed with two positioning seats which are distributed at intervals, and the inner wall of the protection box is also fixed with an elastic mounting component; the screw driver also comprises two assembly sleeves and four screws; a connecting pipe is fixed on the mounting plate; according to the lithium battery, the protection box and the top cover are used for safety protection, so that the lithium battery is safe and reliable to use, and the top cover is combined with the protection box by using the sealing component, so that the lithium battery is convenient to assemble and disassemble; the arrangement of the assembling sleeve, the positioning seat and the elastic mounting assembly can improve the mounting stability of the lithium battery cell and further ensure the reliable use of the lithium battery cell; the overvoltage protection circuit board is installed in an isolation mode, and heat dissipation is facilitated.
Description
Technical Field
The utility model belongs to the technical field of lithium batteries, and particularly relates to a lithium battery with overvoltage protection.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as a positive/negative electrode material and uses a non-aqueous electrolyte solution, the lithium metal battery is firstly proposed and researched by Gilbert N.Lewis in 1912, and the lithium ion battery is proposed and researched by M.S. Whittingham in the 70 th 20 th century.
In the in-service use in-process, establish ties a plurality of lithium cell and constitute lithium cell group and use usually, and in order to guarantee the safety of lithium cell group, place the emergence of excessive pressure overcurrent accident, add the overvoltage protection chip in lithium cell group usually.
However, in the market, when the lithium battery is actually used, the installation stability of the lithium battery is not enough, the lithium battery is difficult to have a good protection effect on the lithium battery core, and the service life of the lithium battery pack is shortened.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a lithium battery with overvoltage protection, which has the characteristics of convenience in use and good protection performance.
In order to achieve the purpose, the utility model provides the following technical scheme: a lithium battery with overvoltage protection comprises a lithium battery pack and an overvoltage protection circuit board, wherein the lithium battery pack is formed by connecting two lithium battery cores in series, the overvoltage protection circuit board is electrically connected with the anode and the cathode of the lithium battery cores respectively, the lithium battery further comprises a protection box, a top cover and a sealing assembly, and the top cover is mounted at the top end of the protection box by the sealing assembly; the inner bottom surface of the protection box is fixedly provided with a support column for supporting the lithium battery cell, the inner wall of the protection box is fixedly provided with two positioning seats which are distributed at intervals, and the inner wall of the protection box is also fixedly provided with two groups of elastic mounting assemblies which are symmetrically distributed; the lithium battery cell assembly structure is characterized by further comprising two assembly sleeves and four screws, wherein the two assembly sleeves and the four screws are fixed into a whole, the assembly sleeves are sleeved on the lithium battery cell, an installation plate is fixed on the assembly sleeves, and air holes distributed in a rectangular array are formed in the installation plate; four connecting pipes which are distributed in a diagonal mode and provided with internal threads are fixed on the mounting plate, and the screws penetrate through the overvoltage protection circuit board and then are connected with the connecting pipes in a threaded screwing mode.
As a preferred technical solution of the present invention, the assembling sleeve has through holes axially distributed therein.
As a preferred technical scheme of the present invention, a limiting column is fixed to the top surface of the top cover, the sealing assembly includes a limiting block, a connecting rod and a return spring, a guide plate is fixed to the outer wall of the protection box, the longitudinal section of the limiting block is an inverted "L" -shaped structure, a limiting hole for the limiting column to pass through is formed in the horizontal portion of the limiting block, a connecting rod is fixed to the bottom end of the vertical portion of the limiting block, the connecting rod passes through the guide plate, a limiting disc is fixed to the bottom end of the connecting rod, and the return spring is sleeved on the connecting rod and located between the limiting disc and the guide plate.
As a preferred technical scheme of the present invention, a positioning column is fixed on the bottom surface of the top cover, and a positioning groove for the positioning column to be embedded into is formed on the top surface of the protection box.
As a preferred technical solution of the present invention, the elastic mounting assembly includes a telescopic rod, a stabilizing piece and a telescopic spring, the telescopic rod is fixed on the inner wall of the protection box, the stabilizing piece is fixed on the end portion of the telescopic rod, and the telescopic spring is sleeved on the telescopic rod and located between the inner wall of the protection box and the stabilizing piece.
As a preferable technical solution of the present invention, symmetrically distributed guide plates are fixed to the top end and the bottom end of the stabilizing piece, and the guide plates are inclined toward the direction of the telescopic rod.
Compared with the prior art, the utility model has the beneficial effects that: according to the lithium battery, the protection box and the top cover are used for safety protection, so that the safety and the reliability of the lithium battery are guaranteed, and the top cover is combined with the protection box through the sealing assembly, so that the lithium battery is convenient to assemble and disassemble; the arrangement of the assembling sleeve, the positioning seat and the elastic mounting assembly can improve the mounting stability of the lithium battery cell and further ensure the reliable use of the lithium battery cell; the overvoltage protection circuit board is installed in an isolation mode, and heat dissipation is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic axial-side structure diagram of a lithium battery cell according to the present invention;
FIG. 3 is a schematic side view of the protection box according to the present invention;
FIG. 4 is a schematic side view of the mounting plate of the present invention;
FIG. 5 is an enlarged schematic view of the closure assembly of FIG. 1 in accordance with the present invention;
in the figure: 1. a protective case; 2. a top cover; 3. a lithium battery cell; 4. a positioning column; 5. positioning a groove; 6. a limiting column; 7. a closure assembly; 8. assembling a sleeve; 9. mounting a plate; 10. an overvoltage protection circuit board; 11. a screw; 12. perforating; 13. positioning seats; 14. a telescopic rod; 15. a stabilizing sheet; 16. a tension spring; 17. a guide plate; 18. a support pillar; 19. a connecting pipe; 20. air holes are formed; 21. a limiting block; 22. a connecting rod; 23. a guide piece; 24. a limiting disc; 25. a return spring; 26. and a limiting hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: a lithium battery with overvoltage protection comprises a lithium battery pack formed by connecting two lithium cells 3 in series, an overvoltage protection circuit board 10, a protection box 1, a top cover 2 and a sealing assembly 7, wherein the overvoltage protection circuit board 10 is electrically connected with the anode and the cathode of the lithium cells 3 respectively, and the top cover 2 is installed at the top end of the protection box 1 by the sealing assembly 7; a supporting column 18 for supporting the lithium battery cell 3 is fixed on the inner bottom surface of the protection box 1, two positioning seats 13 which are distributed at intervals are fixed on the inner wall of the protection box 1, and two groups of elastic mounting assemblies which are symmetrically distributed are fixed on the inner wall of the protection box 1; the lithium battery cell assembly structure further comprises two assembly sleeves 8 and four screws 11 which are fixed into a whole, wherein the assembly sleeves 8 are sleeved on the lithium battery cell 3, an installation plate 9 is fixed on the assembly sleeves 8, and air holes 20 distributed in a rectangular array are formed in the installation plate 9; four connecting pipes 19 which are distributed in a diagonal manner and are provided with internal threads are fixed on the mounting plate 9, screws 11 penetrate through the overvoltage protection circuit board 10 and then are connected with the connecting pipes 19 in a threaded manner, when the overvoltage protection circuit board is used, two lithium batteries 3 respectively penetrate through the assembly sleeve 8, then the overvoltage protection circuit board 10 is fixed on the mounting plate 9 by the screws 11, due to the existence of the connecting pipes 19, the isolated installation of the overvoltage protection circuit board 10 is realized, and vent holes 20 which are distributed in a rectangular array manner are formed in the mounting plate 9, so that the ventilation and heat dissipation of the overvoltage protection circuit board 10 are facilitated, after the overvoltage protection circuit board 10 is installed, the lithium batteries 3 are arranged in the protective box 1, the lithium batteries 3 are positioned and stabilized by the positioning seat 13 and the elastic installation component, the lithium batteries 3 are supported by the supporting columns 18, and finally the top cover 2 is covered on the top end of the protective box 1, and the sealing assembly 7 is used for ensuring the stability of the combination of the top cover 2 and the protection box 1, and the lithium battery cell 3 is protected safely.
Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the assembly sleeve 8 is provided with through holes 12 distributed along the axial direction thereof, so as to facilitate ventilation and facilitate heat dissipation of the lithium battery cell 3.
Specifically, as shown in fig. 1, fig. 3 and fig. 5, in this embodiment, a limiting post 6 is fixed on the top surface of the top cover 2, the sealing component 7 includes a limiting block 21, a connecting rod 22 and a return spring 25, a guide plate 23 is fixed on the outer wall of the protection box 1, the longitudinal section of the limiting block 21 is an inverted "L" -shaped structure, a limiting hole 26 for the limiting post 6 to pass through is formed in the horizontal portion of the limiting block 21, a connecting rod 22 is fixed at the bottom end of the vertical portion of the limiting block 21, the connecting rod 22 passes through the guide plate 23, a limiting disc 24 is fixed at the bottom end of the connecting rod 22, the return spring 25 is sleeved on the connecting rod 22 and is located between the limiting disc 24 and the guide plate 23, the top cover 2 covers the top end of the protection box 1, the limiting block 21 is pulled upward, at this time, the limiting disc 24 and the guide plate 23 compress the return spring 25, after the horizontal portion of the limiting block 21 passes over the limiting post 6, the limiting block 21 is rotated for a certain angle, so that the limiting column 6 penetrates through the limiting hole 26 on the limiting block 21, and after the limiting block 21 is loosened, the matching stability of the limiting block 21 and the limiting column 6 is ensured under the action of the elastic force of the reset spring 25, and the combination stability of the top cover 2 and the protection box 1 is ensured; when top cap 2 is dismantled to needs, pull up stopper 21, after spacing post 6 is crossed to the horizontal part of stopper 21, rotate stopper 21 certain angle, make stopper 21 skew spacing post 6 can take off top cap 2, very convenience.
Specifically, as shown in fig. 1, in this embodiment, a positioning column 4 is fixed on the bottom surface of the top cover 2, a positioning groove 5 for embedding the positioning column 4 is formed in the top surface of the protection box 1, and when the top cover 2 and the protection box 1 are combined, the positioning column 4 is embedded into the positioning groove 5 to position the top cover 2, and meanwhile, the stability of the combination of the top cover 2 and the protection box 1 is improved.
Specifically, as shown in fig. 1 and fig. 3, in this embodiment, the elastic mounting assembly includes a telescopic rod 14, a stabilizing sheet 15 and a telescopic spring 16, the telescopic rod 14 is fixed on the inner wall of the protection box 1, the stabilizing sheet 15 is fixed on the end of the telescopic rod 14, the telescopic spring 16 is sleeved on the telescopic rod 14 and is located between the inner wall of the protection box 1 and the stabilizing sheet 15, the telescopic rod 14 is formed by two sections of hollow cylindrical members, under the elastic force action of the telescopic spring 16, the telescopic rod 14 is extended, the assembly sleeve 8 is pushed inwards by the stabilizing sheets 15 on two sides, the stability of the installation of the lithium battery cell 3 is ensured, the lithium battery cell 3 is not directly pushed by the stabilizing sheet 15, but the effect of stabilizing the lithium battery cell 3 is achieved by pushing the assembly sleeve 8, and the safety of the lithium battery cell 3 can be ensured.
Specifically, according to fig. 1 and fig. 3, in this embodiment, guide plates 17 are fixed at the top end and the bottom end of the stabilizing sheet 15, and the guide plates 17 are inclined toward the telescopic rod 14, so that the lithium battery cell 3 is more labor-saving when being placed in the protection box 1.
The working principle and the using process of the utility model are as follows: when the lithium battery is used, the two lithium battery cores 3 respectively penetrate through the assembly sleeve 8, then the overvoltage protection circuit board 10 is fixed on the mounting plate 9 through the screws 11, the overvoltage protection circuit board 10 is mounted in an isolated mode due to the existence of the connecting pipes 19, and the mounting plate 9 is provided with the air holes 20 distributed in a rectangular array mode, so that ventilation and heat dissipation of the overvoltage protection circuit board 10 are facilitated;
after overvoltage protection circuit board 10 is installed, make lithium cell 3 arrange in protecting box 1, utilize positioning seat 13 and elastic mounting subassembly to fix a position and stabilize lithium cell 3 to utilize support column 18 to support lithium cell 3, cover top cap 2 on protecting box 1's top at last, and utilize seal assembly 7 to guarantee the stability of top cap 2 and the combination of protecting box 1, carry out safety protection to lithium cell 3.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a lithium cell with overvoltage protection, includes lithium cell group and overvoltage protection circuit board (10) of establishing ties and constituteing by two lithium cell (3), overvoltage protection circuit board (10) respectively with the positive pole and the negative pole electric connection of lithium cell (3), its characterized in that: the protective box comprises a protective box body (1), a top cover (2) and a sealing assembly (7), wherein the top cover (2) is installed at the top end of the protective box body (1) through the sealing assembly (7); supporting columns (18) used for supporting the lithium battery cell (3) are fixed on the inner bottom surface of the protection box (1), two positioning seats (13) distributed at intervals are fixed on the inner wall of the protection box (1), and two groups of elastic mounting assemblies which are symmetrically distributed are fixed on the inner wall of the protection box (1); the lithium battery cell assembly structure is characterized by further comprising two assembly sleeves (8) and four screws (11), wherein the two assembly sleeves (8) are fixedly integrated, the assembly sleeves (8) are sleeved on the lithium battery cell (3), an installation plate (9) is fixed on the assembly sleeves (8), and air holes (20) distributed in a rectangular array are formed in the installation plate (9); four connecting pipes (19) which are distributed in a diagonal mode and are provided with internal threads are fixed on the mounting plate (9), and the screws (11) penetrate through the overvoltage protection circuit board (10) and then are connected with the connecting pipes (19) in a threaded screwing mode.
2. A lithium battery with overvoltage protection as claimed in claim 1, characterized in that: the assembly sleeve (8) is internally provided with through holes (12) distributed along the axial direction of the assembly sleeve.
3. A lithium battery with overvoltage protection as claimed in claim 1, characterized in that: the top surface of top cap (2) is fixed with spacing post (6), seal assembly (7) include spacing piece (21), connecting rod (22) and reset spring (25) the outer wall of protection box (1) is fixed with direction piece (23), the vertical tangent plane of spacing piece (21) is for "L" column structure of invering seted up on the horizontal part of spacing piece (21) and supplied spacing hole (26) that spacing post (6) run through the vertical portion bottom mounting of spacing piece (21) has connecting rod (22), just connecting rod (22) run through direction piece (23) the bottom mounting of connecting rod (22) has spacing dish (24), reset spring (25) cup joint on connecting rod (22) and be in spacing dish (24) with between the direction piece (23).
4. A lithium battery with overvoltage protection as claimed in claim 1, characterized in that: the bottom surface of top cap (2) is fixed with reference column (4) the top surface of protection box (1) is seted up and is supplied constant head tank (5) of reference column (4) embedding.
5. A lithium battery with overvoltage protection as claimed in claim 1, characterized in that: the elastic mounting assembly comprises a telescopic rod (14), a stabilizing piece (15) and an expansion spring (16), wherein the telescopic rod (14) is fixed on the inner wall of the protection box (1), the stabilizing piece (15) is fixed at the end part of the telescopic rod (14), and the expansion spring (16) is sleeved on the telescopic rod (14) and is positioned between the inner wall of the protection box (1) and the stabilizing piece (15).
6. A lithium battery with overvoltage protection as claimed in claim 5, characterized in that: the top end and the bottom end of the stabilizing piece (15) are fixed with guide plates (17) which are symmetrically distributed, and the guide plates (17) incline towards the direction of the telescopic rod (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121960291.0U CN216597815U (en) | 2021-08-20 | 2021-08-20 | Lithium battery with overvoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121960291.0U CN216597815U (en) | 2021-08-20 | 2021-08-20 | Lithium battery with overvoltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216597815U true CN216597815U (en) | 2022-05-24 |
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ID=81608677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121960291.0U Active CN216597815U (en) | 2021-08-20 | 2021-08-20 | Lithium battery with overvoltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216597815U (en) |
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2021
- 2021-08-20 CN CN202121960291.0U patent/CN216597815U/en active Active
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