CN221651561U - Self-heating battery - Google Patents
Self-heating battery Download PDFInfo
- Publication number
- CN221651561U CN221651561U CN202323173831.2U CN202323173831U CN221651561U CN 221651561 U CN221651561 U CN 221651561U CN 202323173831 U CN202323173831 U CN 202323173831U CN 221651561 U CN221651561 U CN 221651561U
- Authority
- CN
- China
- Prior art keywords
- heating
- battery
- self
- positive
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 13
- 229910001416 lithium ion Inorganic materials 0.000 description 13
- 238000004146 energy storage Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
Abstract
The utility model provides a self-heating battery, wherein two sides of an aluminum shell are provided with openings; the bare cell is internally provided with a heating chip and is accommodated in the aluminum shell; the positive top cover is arranged on one side of the aluminum shell and is open, and two leading-out ends are arranged on the positive top cover; the negative electrode top cover is covered on the other side of the aluminum shell and is provided with a leading-out end, a heating plate is arranged in the bare cell 1, and the heating end is connected with the positive electrode end through a closed switch to form a self-heating closed loop of the battery; according to the utility model, the heating plate is arranged in the shell, the heating end is connected with the positive electrode end through the closed switch, so that a self-heating closed loop of the battery is formed, the battery can be self-heated to normal temperature in a short time at low temperature, the energy density and the output power of the battery are not influenced by low-temperature environment, the battery is kept to work normally at low temperature, the reliability of the battery in the use process is further improved, and the service life of the battery is prolonged.
Description
Technical Field
The utility model relates to the field of lithium ion batteries, in particular to a self-heating battery.
Background
The lithium ion battery is used as an energy source of the energy storage system, and the charging and discharging performance of the lithium ion battery is directly related to the charging speed, the endurance, the power and the like of the energy storage system; the performance of the energy storage system can directly influence the service life and the safety of the energy storage system.
The service performance of the lithium ion battery is greatly influenced by the ambient temperature, and the lithium ion battery is difficult to charge and discharge at low temperature, has large capacity attenuation, large internal resistance and reduced peak power, so that the cycle life of the lithium ion battery is reduced.
The reasons for the reduced life of lithium ion batteries at low temperatures are mainly the increase in internal impedance and capacity decay caused by lithium ion evolution; at low temperature charging, intercalation of lithium ions and lithium plating reactions on the graphite electrode of the battery are concurrent and competing. Diffusion of lithium ions in graphite is suppressed at low temperature, and the conductivity of the electrolyte is lowered, resulting in a decrease in intercalation rate and easier generation of lithium plating reaction on the graphite surface. The reasons for the reduced lifetime of lithium ion batteries when used at low temperatures are mainly an increase in internal impedance and capacity decay due to lithium ion precipitation.
Therefore, we propose a self-heating battery to solve the problem of life degradation of lithium ion battery at low temperature.
Disclosure of utility model
The utility model aims to solve the defects in the prior art, and adopts the following technical scheme:
A self-heating battery comprises an aluminum shell, wherein two sides of the aluminum shell are provided with openings; the bare cell is internally provided with a heating piece and is accommodated in the aluminum shell; the positive electrode top cover is covered on one side of the aluminum shell and is provided with two leading-out ends; the negative pole top cap, the negative pole top cap lid is located the aluminium shell opposite side is uncovered, be provided with a leading-out end on the negative pole top cap, arrange the heating plate in naked electric core 1 inside, be connected heating end and anodal end through closed switch, form the battery self-heating closed loop.
Further preferably, the two leading-out ends on the positive electrode top cover are a positive electrode end and a heating end respectively.
Further preferably, the positive electrode end is connected with the positive electrode of the bare cell, and the heating end is connected with the positive electrode of the heating plate.
Further preferably, a protection switch is arranged between the positive electrode end and the heating end.
Further preferably, the lead-out end on the negative electrode top cover is a negative electrode end.
Further preferably, the bare cell negative electrode and the heating plate negative electrode are both connected with the negative electrode end.
Compared with the prior art, the utility model has the beneficial effects that:
According to the utility model, the heating plate is arranged in the shell, the heating end is connected with the positive electrode end through the closed switch, so that a self-heating closed loop of the battery is formed, the battery can be self-heated to normal temperature in a short time at low temperature, the energy density and the output power of the battery are not influenced by low-temperature environment, the battery is kept to work normally at low temperature, the reliability of the battery in the use process is further improved, and the service life of the battery is prolonged.
Drawings
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is an assembled schematic view of the present utility model;
FIG. 3 is a schematic view of the structure of the positive electrode top cover;
FIG. 4 is a schematic view of the structure of the negative cap;
Fig. 5 is a circuit diagram of the connection of the positive electrode, the negative electrode and the heating terminal.
In the figure: bare cell 1, positive pole top cap 2, negative pole top cap 3, aluminum hull 4, positive pole end 21, heating end 22, negative pole end 31.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1 to 5, a self-heating battery includes an aluminum case 4, both sides of the aluminum case 4 having openings; the bare cell 1, a heating piece is arranged in the bare cell 1, and the bare cell 1 is accommodated in the aluminum shell 4; the positive top cover 2 is arranged on one side of the aluminum shell 4 in a covering manner, and two leading-out ends are arranged on the positive top cover 2; the negative pole top cap 3, negative pole top cap 3 lid is located aluminium shell 4 opposite side is uncovered, be provided with an extraction end on the negative pole top cap 3, two extraction ends on the anodal top cap 2 are positive pole end 21 and heating end 22 respectively, positive pole end 21 with naked electric core 1 positive pole is connected, heating end 22 with the heating piece is anodal to be connected, positive pole end 21 with be equipped with protection switch between the heating end 22, arrange the heating piece in naked electric core 1 inside, be connected heating end and positive pole end through closed switch, form the self-heating closed circuit of battery.
The leading-out end on the negative electrode top cover 3 is a negative electrode end 31, and the negative electrode of the bare cell 1 and the negative electrode of the heating plate are connected with the negative electrode end 31.
In the examples: and finally, the heating end is connected with the positive electrode end outside through a closed switch, so that the self-heating loop battery is formed.
The heating plate is arranged inside the bare cell 1, the heating end is connected with the positive electrode end through the closed switch, a self-heating closed loop of the battery is formed, the battery can be self-heated to normal temperature in a short time at low temperature, the energy density and the output power of the battery are not influenced by low-temperature environment, the battery is kept to work normally at low temperature, the reliability of the battery in the use process is further improved, and the service life of the battery is prolonged.
Claims (6)
1. A self-heating battery, comprising:
the aluminum shell is provided with openings at two sides;
The bare cell is internally provided with a heating piece and is accommodated in the aluminum shell;
the positive electrode top cover is covered on one side of the aluminum shell and is provided with two leading-out ends;
The negative pole top cap, the negative pole top cap lid is located the aluminium shell opposite side is uncovered, be provided with a leading-out end on the negative pole top cap.
2. The self-heating battery of claim 1, wherein the two terminals on the positive cap are a positive terminal and a heating terminal, respectively.
3. The self-heating battery of claim 2, wherein the positive terminal is connected to the bare cell positive electrode and the heating terminal is connected to the heating plate positive electrode.
4. A self-heating battery as in claim 2, wherein a protection switch is provided between said positive terminal and said heating terminal.
5. The self-heating battery of claim 1, wherein the terminal on the negative top cap is the negative terminal.
6. The self-heating battery of claim 5, wherein the bare cell negative electrode and the heater-tab negative electrode are both connected to the negative electrode terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323173831.2U CN221651561U (en) | 2023-11-24 | 2023-11-24 | Self-heating battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323173831.2U CN221651561U (en) | 2023-11-24 | 2023-11-24 | Self-heating battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221651561U true CN221651561U (en) | 2024-09-03 |
Family
ID=92518670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323173831.2U Active CN221651561U (en) | 2023-11-24 | 2023-11-24 | Self-heating battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221651561U (en) |
-
2023
- 2023-11-24 CN CN202323173831.2U patent/CN221651561U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |