CN210778897U - Self-temperature-control battery - Google Patents
Self-temperature-control battery Download PDFInfo
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- CN210778897U CN210778897U CN201920765126.6U CN201920765126U CN210778897U CN 210778897 U CN210778897 U CN 210778897U CN 201920765126 U CN201920765126 U CN 201920765126U CN 210778897 U CN210778897 U CN 210778897U
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- battery
- sheet
- temperature
- thermal deformation
- self
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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
Abstract
The application discloses self-control temperature battery includes: the battery comprises a battery shell, an inner core, a positive terminal and a negative terminal; the electric heating element is connected between the first part of the thermal deformation sheet and the negative terminal in series, and the second part of the thermal deformation sheet extends to the positive terminal; when the temperature of the thermal deformation sheet is lower than a first critical value, the second part of the thermal deformation sheet is in abutting contact with the positive electrode terminal; when the temperature of the thermal deformation sheet is higher than a second critical value, the thermal deformation sheet is heated to generate warping deformation, so that the thermal deformation sheet is insulated and isolated from the positive terminal; the second critical value is not less than the first critical value. The battery can be according to the height of ambient temperature, self-control self temperature, makes the battery temperature remain throughout in the appropriate scope.
Description
Technical Field
The application relates to a battery, in particular to a self-temperature-control battery.
Background
Compared with a single battery, the battery pack is a power supply device with higher voltage and larger capacity, and is mainly formed by combining a plurality of battery monomers in series and parallel. In order to prevent each battery cell in the battery pack from being incapable of being normally charged and discharged in a low-temperature environment, a heating device is generally disposed in the battery pack. The heating device configured in the battery pack can only heat and raise the temperature of each battery monomer in the battery pack integrally, and a sensor for monitoring the temperature of the battery needs to be specially arranged, so that the heating device is started to heat the battery pack integrally when the temperature of the battery is monitored to be too low.
If a certain battery cell in the battery pack has an excessively low temperature, the heating device does not have the capability of heating the single battery cell. In addition, if each battery cell is used alone, the battery cell cannot normally operate in a low-temperature environment because of the absence of a heating device.
Disclosure of Invention
The purpose of the application is: in order to solve the problems, the self-temperature-control battery is provided, and the temperature of the battery can be automatically controlled according to the temperature of the surrounding environment, so that the temperature of the battery is always kept in a proper range.
The technical scheme of the application is as follows:
a self-regulating temperature battery comprising:
a battery case;
an inner core accommodated in the battery case,
a positive terminal conductively connected to the positive electrode of the inner core, an
A negative terminal conductively connected to the negative electrode of the core;
the heating element is connected between the first part of the thermal deformation sheet and the negative terminal in series, and the second part of the thermal deformation sheet extends to the positive terminal;
when the temperature of the thermal deformation sheet is lower than a first critical value, the second part of the thermal deformation sheet is in abutting contact with the positive electrode terminal;
when the temperature of the thermal deformation sheet is higher than a second critical value, the thermal deformation sheet is heated to generate warping deformation, so that the thermal deformation sheet is insulated and isolated from the positive terminal;
the second critical value is not less than the first critical value.
On the basis of the technical scheme, the application also comprises the following preferable scheme:
the battery shell is in conductive connection with the positive electrode of the inner core, the battery shell is arranged in an insulated mode with the negative electrode terminal, and the positive electrode terminal is the battery shell.
The second threshold is equal to the first threshold.
The thermal deformation sheet is composed of an inner sheet body and an outer sheet body which are fixed with each other, and the inner sheet body and the outer sheet body have different thermal expansion coefficients.
At least one of the inner sheet and the outer sheet is a conductor.
The electric heating element is fixedly connected with the negative terminal.
The electric heating element is arranged in insulating contact with the battery case.
The negative terminal is a negative pole column protruding out of the surface of the self-temperature-control battery, and the electric heating element is fixedly sleeved outside the negative pole column.
The thermally deformable sheet includes three of the second portions.
And an insulating space ring for insulating and separating the negative electrode terminal and the battery shell is arranged between the negative electrode terminal and the battery shell.
The application has the advantages that:
according to the battery, the thermal deformation sheet and the electric heating element are arranged on the battery, the thermal deformation characteristic of the thermal deformation sheet is utilized under the high-temperature and low-temperature environments, the electric heating element is disconnected and conducted with the positive electrode and the negative electrode of the battery, the battery is heated by utilizing the electric energy of the battery under the low-temperature environment, the heating assembly of the battery is disconnected and stops working under the high-temperature environment, and therefore the temperature of the battery is maintained within a required range.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a self-temperature-control battery in an embodiment of the present application;
FIG. 2 is an axial sectional view of a self-regulating battery according to an embodiment of the present invention;
wherein: 1-battery case, 2-negative electrode terminal, 3-thermal deformation sheet, 3 a-first part, 3 b-second part, 4-electric heating element, 5-insulating spacer ring.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.
One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.
Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
Fig. 1 and 2 show a specific embodiment of the self-temperature-control battery of the present application, which is a cylindrical lithium ion battery, and like a conventional battery, the battery also includes a battery case 1, an inner core (not shown in the figure), and a negative terminal 2, wherein the inner core is accommodated inside the battery case 1, the battery case 1 is made of a metal conductive material (such as steel, aluminum, etc.), and the battery case 1 is conductively connected with a positive electrode of the inner core, so that the battery case 1 is positively charged. The negative electrode terminal 2 is electrically connected to the negative electrode of the core, so that the negative electrode terminal 2 is negatively charged, and the negative electrode terminal 2 is fixedly connected (indirectly connected) to the battery can 1. Meanwhile, the negative electrode terminal 2 is arranged insulated from the battery can 1 to prevent short-circuiting, specifically: an insulating spacer 5 for insulating and separating the negative electrode terminal 2 and the battery can 1 is disposed therebetween.
The key improvement of the embodiment is that the battery is also provided with a thermal deformation sheet 3 and an electric heating element 4, the thermal deformation sheet 3 can conduct electricity, and obviously, the electric heating element 4 which can generate heat only by electrifying is also conducted. The aforementioned electric heating element 4 is connected in series between a portion of the thermally deformable sheet 3 (for convenience of description of the embodiment, the portion is referred to as a first portion 3a) and the negative electrode terminal 2, and another portion of the thermally deformable sheet 3 (for convenience of description of the embodiment, the portion is referred to as a second portion 3b) extends to the battery can 1. When the temperature of the thermally deformable sheet 3 is lower than a certain critical value (for convenience of description of the technical solution of the present embodiment, the critical value is referred to herein as a first critical value), the second portion 3b of the thermally deformable sheet 3 is in abutting contact with the battery case 1. When the temperature of the thermal deformation sheet 3 is higher than a certain critical value (for convenience of describing the technical solution of the present embodiment, the critical value is referred to as a second critical value), the thermal deformation sheet 3 is warped and separated from the battery case 1 (separated from each other by a certain distance), and at this time, the thermal deformation sheet 3 is insulated from the battery case 1 and is not conducted any more. Obviously, the second threshold is not less than the first threshold.
In practical application, when the battery is in a high temperature environment, the thermal deformation sheet 3 is separated from the battery case 1 by a certain distance, the thermal deformation sheet and the battery case are insulated and separated, and the electric heating element 4 is not electrified and does not heat the battery. When the ambient temperature of the battery is too low, the thermal deformation sheet 4 deforms due to too low temperature, the deformed negatively charged thermal deformation sheet is abutted and contacted with the positively charged battery case 1, the electric heating element 4 is conducted with the positive electrode and the negative electrode of the battery, the electric heating element 4 is electrified to generate heat, the temperature of the battery rises, obviously, the temperature of the thermal deformation sheet 3 also rises, and the thermal deformation sheet 3 generates or discontinuously or continuously warps and deforms in the temperature rising process, when the temperature of the thermal deformation sheet 3 rises to a certain critical value, the warping and deforming amount is large enough to separate the thermal deformation sheet 3 from the battery case 1, the current introduced into the electric heating element 4 is cut off, and the electric heating element 4 stops working.
The magnitude of the first and second thresholds is determined by the material and structure characteristics of the thermally deformable sheet 3 itself, and we can adjust the material and structure of the thermally deformable sheet 3 to obtain the first and second thresholds with different magnitudes during design. For the same thermal deformation sheet 3, the second threshold value is generally the same as the first threshold value.
The thermal deformation sheet 3 having the deformation characteristics described above is very common in the material field, and particularly in the present embodiment, the thermal deformation sheet 3 is composed of an inner sheet body and an outer sheet body which are fixed to each other, and the inner sheet body and the outer sheet body have different thermal expansion coefficients, which utilize different amounts of expansion or contraction deformation of the inner sheet body and the outer sheet body when the temperature changes, so as to realize the forward or reverse buckling deformation of the thermal deformation sheet 3.
At least one of the inner sheet and the outer sheet is a conductor.
In order to prevent the electric heating element 4 from loosening, the present embodiment fixedly connects the electric heating element 4 to the negative terminal 2. Furthermore, in order to increase the rate and effect of the heating of the battery by the electric heating element 4, the electric heating element 4 may be arranged in insulating abutment with the battery housing 1, i.e. the electric heating element 4 is arranged in abutment with the battery housing 1 and insulated from each other.
In this embodiment, the negative terminal 2 is a negative post protruding from the surface, the electric heating element 4 is fixedly sleeved outside the negative post, the first portion 3a of the thermal deformation sheet 3 is also fixedly sleeved outside the negative post, and the insulating spacer 5 insulates and separates the first portion 3a of the thermal deformation sheet 3 from the negative post to prevent short circuit, as shown in fig. 2.
Referring to fig. 1, the present embodiment is provided with a total of three thermally deformable sheets 3, and a first portion of each thermally deformable sheet 3 is connected to an electric heating element 4 and a second portion thereof extends to a battery case 1.
In the present embodiment, the battery case 1 is electrically connected to the positive electrode of the core, so that the battery case 1 is positively charged, and thus the battery case 1 is the positive electrode terminal of the battery, and in practical applications, the positive and negative electrical terminals of the electrical device can be respectively connected to the battery case 1 and the negative electrode terminal 2, so as to obtain working electricity. In some other embodiments of the present application, the battery case 1 itself is not charged, but a positive terminal, such as a positive post, of the non-battery case connected to the positive electrode of the core is fixed on the battery case 1 in an insulated manner, in which case, the second portion of the thermal deformation sheet 3 may be extended to the position of the positive post, which also enables the battery to heat itself in a low-temperature environment, and stop heating in a high-temperature environment. In other embodiments of the present application, the battery case 1 itself is positively charged, and a positive post with positive charge is fixedly disposed on the battery case 1, and both the battery case 1 and the positive post of the battery are positive terminals of the battery, in which case, the second portion of the thermally deformable sheet 3 can be extended to the position of the battery case 1, and the second portion of the thermally deformable sheet 3 can be extended to the position of the positive post.
The above embodiments are only for illustrating the technical concepts and features of the present application, and the purpose of the embodiments is to enable people to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.
Claims (10)
1. A self-regulating temperature battery comprising:
a battery case (1),
an inner core accommodated in the battery case,
a positive terminal conductively connected to the positive electrode of the inner core, an
A negative terminal conductively connected to the negative electrode of the core;
the lithium battery is characterized by further comprising an electric conduction thermal deformation sheet (3) and an electric heating element (4), wherein the electric heating element (4) is connected between a first part (3a) of the thermal deformation sheet (3) and the negative terminal (2) in series, and a second part of the thermal deformation sheet (3) extends to the positive terminal;
when the temperature of the thermal deformation sheet (3) is lower than a first critical value, the second part of the thermal deformation sheet (3) is in abutting contact with the positive terminal;
when the temperature of the thermal deformation sheet (3) is higher than a second critical value, the thermal deformation sheet (3) is heated to generate warping deformation, so that the thermal deformation sheet is insulated and isolated from the positive terminal;
the second critical value is not less than the first critical value.
2. The self temperature control battery according to claim 1, wherein the battery case (1) is conductively connected with the positive electrode of the core, and the battery case (1) is arranged in insulation with the negative electrode terminal (2), and the positive electrode terminal is the battery case (1).
3. The self-regulating temperature battery according to claim 1, wherein the second critical value is equal to the first critical value.
4. The self temperature-controlling battery according to claim 1, wherein the thermally deformable sheet (3) is composed of an inner sheet and an outer sheet fixed to each other, the inner sheet and the outer sheet having different thermal expansion coefficients.
5. The self temperature controlling battery of claim 4, wherein at least one of the inner sheet and the outer sheet is a conductor.
6. The self temperature control battery according to claim 1, wherein the electric heating element (4) is fixedly connected to the negative terminal (2).
7. The self temperature-control battery according to claim 6, characterized in that the electric heating element (4) is arranged in insulating abutment with the battery case (1).
8. The self temperature-control battery according to claim 6, wherein the negative terminal (2) is a negative pole protruding from the surface of the self temperature-control battery, and the electric heating element (4) is fixedly sleeved outside the negative pole.
9. The self temperature-controlling battery according to claim 1, wherein the thermally deformable sheet (3) includes three of the second portions (3 b).
10. The self temperature-control battery according to claim 2, wherein an insulating spacer ring (5) for insulating and separating the negative terminal (2) and the battery case (1) is arranged therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765126.6U CN210778897U (en) | 2019-05-24 | 2019-05-24 | Self-temperature-control battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765126.6U CN210778897U (en) | 2019-05-24 | 2019-05-24 | Self-temperature-control battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210778897U true CN210778897U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920765126.6U Expired - Fee Related CN210778897U (en) | 2019-05-24 | 2019-05-24 | Self-temperature-control battery |
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| Country | Link |
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| CN (1) | CN210778897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190361A (en) * | 2019-05-24 | 2019-08-30 | 苏州安靠电源有限公司 | Temp auto-controlled battery |
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2019
- 2019-05-24 CN CN201920765126.6U patent/CN210778897U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190361A (en) * | 2019-05-24 | 2019-08-30 | 苏州安靠电源有限公司 | Temp auto-controlled battery |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20210524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |