CN212380467U - Core heating type storage battery - Google Patents
Core heating type storage battery Download PDFInfo
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- CN212380467U CN212380467U CN202021196908.1U CN202021196908U CN212380467U CN 212380467 U CN212380467 U CN 212380467U CN 202021196908 U CN202021196908 U CN 202021196908U CN 212380467 U CN212380467 U CN 212380467U
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- battery
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a core adds fever type battery belongs to battery technical field. The utility model provides a core heating type storage battery, which comprises a shell, a battery unit, a positive pole column, a negative pole column and a heating pole column; the battery units are connected in series and parallel to form a storage battery; the positive electrode and the negative electrode of the battery unit are respectively converged into a positive pole column and a negative pole column; a heating unit is clamped between the battery units; the heating units are connected in parallel; two ends of the heating unit are respectively provided with a first tab and a second tab; the second tab is positioned in the storage battery and is connected with the negative electrode in a welding way; the first tab is gathered on the top cover of the shell and forms a heating pole column by crimping the metal shell. The core heating type storage battery utilizes the heating unit to heat the core electrolyte, so that the normal temperature of the battery core is realized under the low-temperature condition, the low-temperature charge and discharge capacity of the storage battery is greatly improved, and the normal temperature performance of the storage battery is recovered under the harsh low-temperature condition.
Description
Technical Field
The utility model belongs to the technical field of the battery, concretely relates to core adds fever type battery.
Background
The accumulator is a device which generates current by the change of internal electrolyte through chemical reaction and the appearance of potential difference at the positive and negative electrodes. The optimal working temperature of the storage battery is 25 ℃, and under a low-temperature environment, ions in electrolyte in the storage battery move quite slowly, so that the transfer activity of the ions between a positive electrode and a negative electrode is influenced, and the charging and discharging performance of the storage battery is reduced. The data show that the 20-hour discharge rate of the storage battery is reduced by 30% at 0 ℃, and the capacity is only about half of the normal value when the temperature reaches-18 ℃. Under the low-temperature environment, the battery is not really dead, but charged but cannot be normally released. In low temperature environment, the charging of the accumulator is also difficult due to the phenomena of the activity reduction and concentration polarization of the polar plate and the electrolyte active substance of the accumulator. The charge acceptance current of the negative plate of the storage battery at the temperature of minus 20 ℃ is only 40 percent at the normal temperature.
At present, common methods for improving the low-temperature performance of the storage battery include the adoption of new materials for a positive electrode and a negative electrode, the optimization of an electrolyte formula, the heating of a storage battery shell and the like. Batteries optimized for new plate materials and electrolyte formulations still suffer from reduced low temperature performance. The heating mode of the storage battery shell adopts a poor liquid type tight assembly design, so that the electrolyte in the gaps among the positive electrode, the partition plate and the negative electrode flows very weakly, the internal thermal conductivity is very poor, and the thermal capacity of the electrolyte is small, so that the efficiency of conducting external heating heat to the storage battery core part is low, the time is long, and the activation effect of the storage battery is poor. Therefore, there is a need for an efficient, energy-efficient, controlled core heating structure that addresses the problem of poor low temperature performance of batteries.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a core heating type storage battery. The utility model provides a core adds fever type battery, under the low temperature condition, through the heating of battery core, realizes the quick activation of battery, improves battery low temperature charge and discharge ability.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a core heating type storage battery comprises a shell, a battery unit, a positive pole column, a negative pole column and a heating pole column; the storage battery is formed by connecting a plurality of battery units in series and in parallel; the battery cell has a positive electrode and a negative electrode; the positive electrodes and the negative electrodes of the plurality of battery units are respectively converged into positive posts and negative posts; the positive pole column and the negative pole column are both positioned on the top cover of the shell; heating units are clamped among the adjacent battery units; the heating units are connected in parallel; the two ends of the heating unit are respectively provided with a first tab and a second tab; the second tab is positioned in the storage battery and is connected with the negative electrode in a welding manner; the first tab is gathered on the top cover of the shell and forms the heating pole column by crimping the metal shell.
Preferably, the heating unit comprises a partition plate, an insulating heating element and a heating element fixing point; the insulating heating element is fixedly connected to the partition plate through the heating element fixing point.
Preferably, the insulating heating element is clamped to the separator by the positive electrode and the negative electrode.
Preferably, the insulating heating element is fixed to the partition by gluing.
Preferably, the insulating heating element is one of a sheet, a rod, a wire, and a mesh.
Preferably, the insulating heating element is one of resistive organic, inorganic or organic-inorganic hybrid materials.
Preferably, the insulated heating element has an outer insulating layer.
Preferably, the heating pole column controls the connection and disconnection of the heating pole column and the positive pole column through an external controller.
The utility model discloses only utilize a small amount of electric energy of battery, through the heating of the most critical core electrolyte of insulating heating element to the initial charge-discharge of battery, realize battery core normal atmospheric temperature under the low temperature condition, promote battery low temperature charge-discharge ability by a wide margin, make the battery resume normal atmospheric temperature performance under harsh low temperature condition.
And according to the characteristic that the storage battery is discharged by short-time small current and can internally generate polarized heat through electrochemical reaction for activation, the work of the core part insulating heating element not only consumes less electric quantity, but also can double improve the low-temperature performance of the storage battery.
The internal temperature of the storage battery cannot be exceeded in the heating process by adopting the constant-temperature insulating heating element.
The adopted insulated heating element only occupies a tiny area of the separator, does not influence the movement of ions between the positive electrode and the negative electrode, has small thickness, does not deteriorate the space between the positive electrode and the negative electrode, and is beneficial to the retention of sufficient electrolyte between the positive electrode and the negative electrode.
Drawings
FIG. 1 is a schematic diagram of the principle structure of the present invention;
in the figure, 1, a positive pole column, 2, a negative pole column, 3, a heating pole column and 4, a shell;
fig. 2 is a schematic diagram of a battery unit structure according to the present invention;
in the figure, 5, a battery unit, 6, a positive electrode, 7, a negative electrode, 8, a separator, 9, an electrolyte;
FIG. 3 is a schematic structural view of the heating unit of the present invention;
in the figure, 10 is an insulating heating element, 11 is a heating element fixing point, 12 is a tab I, 13 is a tab II.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a core heating type storage battery, which comprises a shell 4, a battery unit 5, a positive pole column 1, a negative pole column 2 and a heating pole column 3; a plurality of battery units 5 are connected in series and in parallel to form the storage battery; the battery cell 5 has a positive electrode 6 and a negative electrode 7; the positive electrodes 6 and the negative electrodes 7 of the plurality of battery units 5 are respectively converged into a positive pole column 1 and a negative pole column 2; the positive pole column 1 and the negative pole column 2 are both positioned on the top cover of the shell 4; heating units are clamped among a plurality of adjacent battery units 5; the heating units are connected in parallel; the two ends of the heating unit are respectively provided with a first tab 12 and a second tab 13; the second tab 13 is positioned in the storage battery and is connected with the negative electrode 7 in a welding manner; the first tabs 12 are gathered on the top cover of the shell 4 to form the heating pole 3 by crimping a metal shell.
In the present invention, the heating unit includes a partition plate 8, an insulating heating element 10, and a heating element fixing point 11; the insulating heating element 10 is fixedly connected to the partition 8 via the heating element fixing points 11.
In the present invention, the insulating heating element 10 is held on the separator 8 by the positive electrode 6 and the negative electrode 7.
In the present invention, the insulating heating element 10 is fixed to the partition plate 8 by adhesion. It should be noted that the fixing method of the insulating heating element 10 and the partition plate 8 is not limited to gluing, but gluing is only a preferred fixing method, and other fixing methods are also possible. For example: fastening, clamping and the like.
In the present invention, the insulating heating element 10 is one of a sheet, a rod, a filament, and a mesh. It is to be noted that the structural form of the insulating heating element 10 is not limited to one of the above-described sheet, rod, wire, and mesh shapes as long as the structural form of the insulating heating element 10 does not affect the ion movement between the positive electrode 6 and the negative electrode 7.
In the present invention, the insulating heating element 10 is one of resistance type organic, inorganic or organic-inorganic mixture materials. For example: organic heating wire such as carbon fiber, inorganic heating wire such as metal, PTC heating material, and mixture such as carbon fiber metal composite material.
In the present invention, the insulated heating element 10 has an outer insulating layer.
The utility model discloses in, heating utmost point post 3 is controlled through external control ware heating utmost point post 3 with the connection and the disconnection of positive post 1. When the external controller controls the heating pole 3 to be connected with the positive pole 1, current returns to the negative pole 2 through the insulating heating element 10, heat is generated in the core part of the storage battery, and the electrolyte 9 between the positive electrode 6 and the negative electrode 7 of each battery unit 5 is heated; when the storage battery reaches the normal-temperature charging and discharging performance, the controller controls the connection between the heating pole 3 and the positive pole 1 to be disconnected, and the insulating heating element 10 stops working.
The utility model provides a working principle of core heating type battery does:
under the low temperature environment, before the need battery work, through the connection switch-on between external control ware control heating utmost point post 3 and the positive post 1, after heating utmost point post 3 and positive post 1 are linked together, have the electric current to pass through insulating heating element 10 on baffle 8, utilize a small amount of electric energy of battery self to make insulating heating element 10 generate heat, produce heat in the battery core, a small amount of electrolyte 9 between positive electrode 6 and negative electrode 7 is heated will rise the temperature rapidly, activate. The whole accumulator core will be heated up quickly, so that the charge and discharge capacity of the accumulator can be restored to normal temperature quickly.
Meanwhile, the small amount of discharge of the storage battery is also beneficial to the storage battery to generate heat through internal electrochemical reaction, so that the internal temperature of the storage battery is increased. After the storage battery reaches the normal-temperature charging and discharging performance, the controller controls the heating pole column and the positive pole column to be disconnected, and the insulating heating element stops working.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A core heating type storage battery comprises a shell, a battery unit, a positive pole column, a negative pole column and a heating pole column; the storage battery is formed by connecting a plurality of battery units in series and in parallel; the battery cell has a positive electrode and a negative electrode; the positive electrodes and the negative electrodes of the plurality of battery units are respectively converged into positive posts and negative posts; the positive pole column and the negative pole column are both positioned on the top cover of the shell; the battery pack is characterized in that heating units are clamped among a plurality of adjacent battery units; the heating units are connected in parallel; the two ends of the heating unit are respectively provided with a first tab and a second tab; the second tab is positioned in the storage battery and is connected with the negative electrode in a welding manner; the first tab is gathered on the top cover of the shell and forms the heating pole column by crimping the metal shell.
2. The core-heated storage battery of claim 1, wherein the heating unit comprises a separator, an insulating heating element, and a heating element fixing point; the insulating heating element is fixedly connected to the partition plate through the heating element fixing point.
3. The core-heated battery as defined in claim 2, wherein the insulating heating element is clamped to the separator by the positive electrode and the negative electrode.
4. The core-heated battery as defined in claim 2, wherein the insulating heating element is fixed to the separator by gluing.
5. The core-heated battery as defined in claim 2, wherein the insulating heating element is one of a sheet, a rod, a wire, and a mesh.
6. The core-heated battery as defined in claim 2, wherein the insulating heating element is one of a resistive organic, inorganic or organic-inorganic hybrid material.
7. The core-heated battery of claim 2, wherein the insulating heating element has an outer insulating layer.
8. The core heating type storage battery according to any one of claims 1 to 6, wherein the heater pole is connected to or disconnected from the positive pole under control of an external controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021196908.1U CN212380467U (en) | 2020-06-24 | 2020-06-24 | Core heating type storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021196908.1U CN212380467U (en) | 2020-06-24 | 2020-06-24 | Core heating type storage battery |
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| Publication Number | Publication Date |
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| CN212380467U true CN212380467U (en) | 2021-01-19 |
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| CN202021196908.1U Active CN212380467U (en) | 2020-06-24 | 2020-06-24 | Core heating type storage battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114730966A (en) * | 2021-06-22 | 2022-07-08 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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- 2020-06-24 CN CN202021196908.1U patent/CN212380467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114730966A (en) * | 2021-06-22 | 2022-07-08 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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