CN218160588U - Lithium battery heating device, lithium battery system and vehicle - Google Patents
Lithium battery heating device, lithium battery system and vehicle Download PDFInfo
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- CN218160588U CN218160588U CN202221766771.8U CN202221766771U CN218160588U CN 218160588 U CN218160588 U CN 218160588U CN 202221766771 U CN202221766771 U CN 202221766771U CN 218160588 U CN218160588 U CN 218160588U
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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 application relates to a lithium battery heating device, including: the heating unit comprises a heating element and a temperature control element connected with the heating element in series, the heating element is used for heating the lithium battery, and the temperature control element is used for cutting off the power supply of the heating element when the temperature of the lithium battery reaches a preset temperature; and the control module comprises a temperature detection component for detecting the temperature of the lithium battery, and the control module is connected with the heating unit and used for controlling the work of the heating unit according to the temperature of the lithium battery. The lithium battery can be heated, the heating protection function is achieved, the safety performance of the lithium battery is improved, and the service life of the lithium battery is prolonged.
Description
Technical Field
The application relates to the technical field of lithium batteries, and relates to a lithium battery heating device, a lithium battery system and a vehicle.
Background
The lithium battery can generate irreversible chemical reactions such as lithium precipitation and the like when being charged at 0 ℃, so that the capacity and the service life of the battery are quickly reduced, the safety of the battery is seriously influenced, and even a blasting accident can be generated. Therefore, the lithium battery is recharged by heating to a temperature that satisfies the temperature before charging at 0 ℃ to ensure safe and long-life use of the lithium battery.
The lithium battery with new energy is widely applied as electric energy storage in the motor caravan. Since the motor caravan is used all the year round, especially in winter in cold areas, the internal temperature of the lithium battery is easy to be reduced to below 0 ℃. If the lithium battery is charged at 0 ℃ or lower, lithium ions are not ready to be inserted into the negative electrode, and thus metallic lithium dendrites are formed on the surface of the negative electrode, and this reaction consumes the lithium ions repeatedly charged and discharged in the lithium battery, which greatly reduces the battery capacity. The metal lithium dendrite that separates out reaches certain degree, can pierce through the diaphragm, causes the inside short circuit of battery, influences the safe handling of lithium cell when serious.
Most of the lithium batteries of car at present do not take heating function, use the back when using up when the lithium cell, must drive the car and resume the inside temperature of lithium cell to the environment more than 0 ℃, or use external heat source heating lithium cell, make the lithium cell inside reach and just can charge more than 0 ℃, so relapse serious influence lithium cell as novel electric power energy memory's outstanding effect, influence the car owner to the normal use of lithium cell.
SUMMERY OF THE UTILITY MODEL
For the problem that exists among the overcoming correlation technique, this application aims at providing a lithium cell heating device, can heat and have the heating protect function for the lithium cell, has improved the security performance and the life-span of lithium cell.
The application is realized through the following technical scheme.
This technical scheme provides a lithium cell heating device, includes:
the heating unit comprises a heating element and a temperature control element connected with the heating element in series, the heating element is used for heating the lithium battery, and the temperature control element is used for cutting off the power supply of the heating element when the temperature of the lithium battery reaches a preset temperature;
and the control module comprises a temperature detection component for detecting the temperature of the lithium battery, is connected with the heating unit and is used for controlling the heating unit to work according to the temperature of the lithium battery.
The technical scheme of this application installs the heating element additional for the lithium cell, under control module's automatic control, when detecting through temperature detecting element when charging that the lithium cell is inside to be less than 0 ℃, the heating element that switches on preferentially heats, reaches more than 0 ℃ when the lithium cell, and when satisfying charging temperature, control module stops to heat and switches for normal charging, and this is the one-level protection to the lithium cell, prevents that low temperature from charging and damaging.
In order to prevent the damage and accidents caused by overheating of the lithium battery due to the fact that the heating unit is not powered off and heating is interrupted due to the control module, a temperature control element is connected in series on a heating element-free power supply line, and one path of secondary protection is added to ensure safe heating of the lithium battery.
In one embodiment, the heating element is a heating film, and the heating element is disposed on an outer wall of the lithium battery.
As the implementation mode of the technical scheme, the heating element is one or more of a silica gel heating film, a polyimide heating film, an epoxy plate heating film, a PET heating film, an aluminum foil heating film, a PTC heating film and a metal heating film.
In one embodiment, the number of the heating elements is multiple, and the multiple heating elements are connected in series or in parallel and then connected with the temperature control element.
As an implementation manner of the technical scheme, the temperature control element is a temperature control switch, and the temperature control element is arranged on the outer wall of the lithium battery.
In one embodiment, the temperature detecting unit is a temperature sensor, and the temperature detecting unit is disposed on an electrode column of the lithium battery and detects a temperature of the electrode column.
Another technical scheme of this application provides a lithium battery system, including lithium cell, the module of charging and as above lithium cell heating device, the lithium cell with the module electrical property that charges meets, the module of charging is used for giving the lithium cell charges.
As the implementation mode of the technical scheme, the charging module is connected with the control module, the control module is used for working according to the temperature of the lithium battery, and when the temperature of the lithium battery is detected to be lower than the preset temperature, the power supply of the charging module is cut off.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic circuit diagram of a lithium battery system shown in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a lithium battery system shown in an embodiment of the present application.
Description of the reference numerals:
110-a housing; 120-a lithium battery; 130-a charging module; 141-a control module; 142-a temperature control element; 143-a heating element; 144-temperature sensing means; 151-positive terminal; 152-negative terminal.
Detailed Description
Technical solutions in some embodiments of the present application will be clearly and completely described below with reference to the drawings in some embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.
The technical solutions of the present application are described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and fig. 2, the present embodiment provides a lithium battery system for a vehicle, such as a motor caravan, a car, etc., and the lithium battery system is used as an energy storage battery for the vehicle, and includes a housing 110, and a lithium battery 120, a charging module 130 and a lithium battery heating device disposed inside the housing 110, wherein the housing 110 is provided with a positive terminal 151 and a negative terminal 152.
The lithium battery 120 is electrically connected to the charging module 130, the charging module 130 is used for charging the lithium battery 120, an input end of the charging module 130 is connected to the control module 141, an input end of the control module 141 is electrically connected to the positive electrode 151, and the control module 141 has two output ends respectively electrically connected to the heating unit and the charging module 130.
In this embodiment, the lithium battery heating apparatus includes a heating unit and a control module 141, one end of the heating unit is connected to the control module 141, and the other end is connected to a negative terminal 152, the heating unit includes a heating element 143 and a temperature control element 142 connected in series with the heating element 143, the heating element 143 is configured to heat the lithium battery 120, and the temperature control element 142 is configured to disconnect power supply of the heating element 143 when the temperature of the lithium battery 120 reaches a preset temperature; the control module 141 includes a temperature detecting part 144 for detecting the temperature of the lithium battery 120, and the control module 141 controls the operation of the heating unit and the charging module 130 according to the temperature of the lithium battery 120.
It can be understood that the heating unit is added to the lithium battery 120, and under the automatic control of the control module 141, when the temperature detection component 144 detects that the temperature inside the lithium battery 120 is lower than 0 ℃ during charging, the control module 141 disconnects the power supply of the charging module 130, so as to ensure that the lithium battery 120 cannot be charged below 0 ℃, and thus the safety and the service life of the lithium battery 120 are ensured. At this time, the control module 141 preferentially turns on the heating unit to heat, and when the lithium battery 120 reaches above 0 ℃ and meets the charging temperature, for example, 10 ℃, the control module 141 turns off the power supply of the heating unit to stop heating and switches to the power supply of the charging module 130 to normally charge the lithium battery 120, which is a primary protection for the lithium battery 120 and prevents the lithium battery 120 from being damaged by low-temperature charging.
In order to prevent the heating unit from being powered off to interrupt heating due to an error cause such as a crash of an internal program of the control module 141, which may cause damage and accidents due to overheating of the lithium battery 120, the temperature control element 142 is connected in series to the circuit supplying power without heating elements, and a secondary protection is added to ensure safe heating of the lithium battery 120, for example, when the temperature detected by the temperature control element 142 reaches 40 ℃, the temperature control element 142 is turned off, so that the heating element 143 connected in series therewith stops heating.
In this embodiment, the heating element 143 is a heating film, and the heating element 143 is disposed on an outer wall of the lithium battery 120, for example, the heating element 143 is adhered to the outer wall of the lithium battery 120 or interposed between the battery packs. Preferably, the heating element 143 is one or more of a silicon heating film, a polyimide heating film, an epoxy plate heating film, a PET heating film, an aluminum foil heating film, a PTC heating film, and a metal heating film.
In this embodiment, the number of the heating elements 143 is plural, and the plural heating elements 143 are connected in series or in parallel to each other and then connected to the temperature control element 142. In this manner, the temperature of the lithium battery 120 may be rapidly raised by the plurality of heating elements 143.
In this embodiment, the temperature control element 142 is a temperature control switch, for example, a temperature control switch of type KSD301, and the temperature control element 142 is disposed on an outer wall of the lithium battery 120.
In this embodiment, the temperature detecting member 144 is a temperature sensor, and the temperature detecting member 144 is disposed on an electrode column of the lithium battery 120 and detects the temperature of the electrode column. Illustratively, the temperature sensor is mounted on the electrode post of the negative electrode of the lithium battery 120.
In this embodiment, the control module 141 and the charging module 130 are PCB circuit board modules, respectively, the control module 141 and the charging module 130 may be independently arranged, or the control module 141 and the charging module 130 may be integrated on the same PCB circuit board module at the same time.
The lithium battery system of this embodiment has the self-heating function, and has the secondary heating protection, realizes that low temperature is automatic to be charged, satisfies user's safety and normal charge, charges after the low-temperature heating below 0 ℃, avoids the inside lithium phenomenon of separating of lithium cell 120 to avoid reducing by a wide margin of battery capacity, improve the life and the security performance of battery simultaneously, secondary protection effectively protects charging safety more.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A lithium battery heating apparatus, comprising:
the heating unit comprises a heating element and a temperature control element connected with the heating element in series, the heating element is used for heating the lithium battery, and the temperature control element is used for cutting off the power supply of the heating element when the temperature of the lithium battery reaches a preset temperature;
and the control module comprises a temperature detection component for detecting the temperature of the lithium battery, and the control module is connected with the heating unit and used for controlling the work of the heating unit according to the temperature of the lithium battery.
2. The lithium battery heating apparatus as claimed in claim 1, wherein the heating element is a heating film, and the heating element is provided on an outer wall of the lithium battery.
3. The heating apparatus for a lithium battery as claimed in claim 2, wherein the heating element is one or more of a silicon heating film, a polyimide heating film, an epoxy plate heating film, a PET heating film, an aluminum foil heating film, a PTC heating film, and a metal heating film.
4. The lithium battery heating apparatus as claimed in claim 1, wherein the heating elements are plural, and the plural heating elements are connected to the temperature control element after being connected in series or in parallel.
5. The lithium battery heating apparatus as claimed in claim 1, wherein the temperature control element is a temperature control switch, and the temperature control element is disposed on an outer wall of the lithium battery.
6. The lithium battery heating apparatus as claimed in claim 1, wherein the temperature detecting member is a temperature sensor, and the temperature detecting member is provided on an electrode post of the lithium battery for detecting a temperature of the electrode post.
7. The lithium battery heating apparatus as claimed in claim 1, wherein the control module includes a PCB circuit board module, and the temperature sensing part is connected to the PCB circuit board module.
8. A lithium battery system comprising a lithium battery, a charging module and a lithium battery heating device as claimed in any one of claims 1 to 7, wherein the lithium battery is electrically connected to the charging module, and the charging module is configured to charge the lithium battery.
9. A lithium battery system according to claim 8, characterized in that the charging module is connected to a control module, the control module being adapted to operate the charging module in dependence of a detected temperature of the lithium battery, and to disconnect the power supply of the charging module upon detecting that the temperature of the lithium battery is below a predetermined temperature.
10. A vehicle comprising a lithium battery system according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221766771.8U CN218160588U (en) | 2022-07-08 | 2022-07-08 | Lithium battery heating device, lithium battery system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221766771.8U CN218160588U (en) | 2022-07-08 | 2022-07-08 | Lithium battery heating device, lithium battery system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218160588U true CN218160588U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221766771.8U Active CN218160588U (en) | 2022-07-08 | 2022-07-08 | Lithium battery heating device, lithium battery system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218160588U (en) |
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2022
- 2022-07-08 CN CN202221766771.8U patent/CN218160588U/en active Active
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