CN210723297U - Battery heating device of electric automobile - Google Patents
Battery heating device of electric automobile Download PDFInfo
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- CN210723297U CN210723297U CN201921973137.XU CN201921973137U CN210723297U CN 210723297 U CN210723297 U CN 210723297U CN 201921973137 U CN201921973137 U CN 201921973137U CN 210723297 U CN210723297 U CN 210723297U
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- induction heating
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- electromagnetic coil
- heat transfer
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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 discloses an electric automobile battery heating device. The battery heating device of the electric automobile comprises a temperature sensor, an AD converter, a controller, a high-frequency switching device, an electromagnetic coil and an induction heating sheet, and heat is generated by adopting an electromagnetic induction heating principle, so that the installation position of the electromagnetic coil can be flexibly arranged according to the space in the automobile, and the electromagnetic coil is arranged below the induction heating sheet; the insulation heat transfer layer, the induction heating layer and the heat insulation layer of the induction heating sheet are all made of extremely thin materials, the total thickness is only 4-7.5 mm, the induction heating sheet can be completely arranged in gaps among all the single batteries in the battery pack, no extra space is occupied, and the induction heating sheet has the characteristics of small volume, light weight and low cost.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to an electric automobile battery heating device.
Background
In recent years, the nation has vigorously developed the electric automobile industry, and electric automobiles have obvious advantages in various aspects such as environmental protection, energy conservation, economy and the like compared with traditional automobiles, and the market in the future is certainly very wide. However, as the use performance of the electric vehicle is continuously improved, the disadvantage that the activity of the power battery is reduced at low temperature is gradually exposed. In order to improve the low-temperature service performance of the battery of the electric vehicle, a heating device is often designed and additionally installed on the battery pack.
The heating device of the conventional power battery pack of the electric vehicle generally uses an electric heating wire or a PTC thermistor material to generate heat, and then the heat is sent into the battery pack through a blower or circulating water. However, the heating material, the blower and the circulating water system adopted by the heating mode occupy the space inside and outside the battery box, and external equipment needs to be additionally purchased, so that the problems of overlarge volume of the heating device and overhigh equipment cost are often caused. And the weight of the PTC thermistor is large, and the load of the battery pack and the electric vehicle is also increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric automobile battery heating device to solve the problem that current electric automobile battery heating device occupation space is big, with high costs, weight is big.
In order to achieve the above object, the utility model provides a following scheme:
an electric vehicle battery heating apparatus, comprising: the device comprises a temperature sensor, an AD converter, a controller, a high-frequency switching device, an electromagnetic coil and an induction heating sheet; the induction heating sheet is tightly attached to the surface of the battery of the electric automobile; the induction heating sheet comprises an insulation heat transfer layer, an induction heating layer and a heat insulation layer which are sequentially stacked; the insulating heat transfer layer is tightly attached to the surface of the battery of the electric automobile; the upper surface of the induction heating layer is in contact with the lower surface of the insulation heat transfer layer; the lower surface of the induction heating layer is in contact with the upper surface of the heat insulation layer; a plurality of vent holes are formed in the insulating heat transfer layer; the temperature sensor is fixed in a ventilation hole at the outermost side of the insulating heat transfer layer;
the electromagnetic coil is arranged on the electric automobile and is positioned under the induction heating sheet; the temperature sensor is connected with the controller through the AD converter; the controller is connected with the electromagnetic coil through the high-frequency switching device.
Optionally, the temperature sensor is a patch type temperature sensor.
Optionally, the high-frequency switching device is a relay or an IGBT device.
Optionally, the insulating heat transfer layer is a sheet structure made of a heat conducting and insulating material, and the thickness of the insulating heat transfer layer is 1-2 mm.
Optionally, the induction heating layer is a sheet structure made of high magnetic resistance material, the magnetic conductivity is greater than 100, and the thickness is 2-3 mm.
Optionally, the heat insulation layer is a sheet structure made of hard sponge, and the thickness of the heat insulation layer is 1-2.5 mm.
Optionally, the electromagnetic coil is mounted on a chassis of the electric vehicle.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model provides an electric automobile battery heating device, the electric automobile battery heating device comprises a temperature sensor, an AD converter, a controller, a high-frequency switch device, an electromagnetic coil and an induction heating sheet, and adopts the electromagnetic induction heating principle to generate heat, so that the installation position of the electromagnetic coil can be flexibly arranged according to the space in the automobile, and the installation position is only required to be arranged below the induction heating sheet; the insulation heat transfer layer, the induction heating layer and the heat insulation layer of the induction heating sheet are all made of extremely thin materials, the total thickness is only 4-7.5 mm, the induction heating sheet can be completely arranged in gaps among all the single batteries in the battery pack, no extra space is occupied, and the induction heating sheet has the characteristics of small volume, light weight and low cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings provided by the present invention without any creative effort.
Fig. 1 is a schematic structural diagram of a battery heating device for an electric vehicle provided by the present invention;
fig. 2 is the utility model provides an electric automobile battery heating device and the schematic diagram of the structure that the battery cell is connected.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing an electric automobile battery heating device to solve the problem that current electric automobile battery heating device occupation space is big, with high costs, weight is big.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is the utility model provides an electric automobile battery heating device's schematic structure diagram. Fig. 2 is the utility model provides an electric automobile battery heating device and the schematic diagram of the structure that the battery cell is connected. Referring to fig. 1, the utility model discloses an electric automobile battery heating device includes: the temperature sensor 1, the AD converter 2, the controller 3, the high-frequency switching device 4, the electromagnetic coil 5 and the induction heating sheet 6. As shown in fig. 2, the induction heating sheet 6 may be mounted on any one or more surfaces of the battery, and the induction heating sheet 6 is closely attached to the surface of the battery of the electric vehicle. The battery pack of the electric automobile generally comprises a plurality of single batteries 7, the induction heating sheet 6 is clamped by the two single batteries 7, the structure of the battery pack or the battery box is not required to be improved, and the use is very convenient.
As shown in fig. 1, the induction heating sheet 6 includes an insulating heat transfer layer 601, an induction heating layer 602, and a heat insulating layer 603, which are sequentially stacked. The insulating heat transfer layer 601 is tightly attached to the surface of the battery of the electric automobile. The upper surface of the induction heating layer 602 is in contact with the lower surface of the insulating heat transfer layer 601. The lower surface of the induction heating layer 602 is in contact with the upper surface of the heat insulating layer 603. For convenience of use, the insulating heat transfer layer 601, the induction heating layer 602 and the heat insulating layer 603 may be adhered together in a bonding manner to form an induction heating sheet 6.
In order to ensure the heat transfer effect, a plurality of vent holes 604 are formed in the insulating heat transfer layer 601. The number of the ventilation holes 604 should not be excessive in order to ensure the insulation effect. Preferably, the ventilation holes 604 are circular or square, and the interval between two adjacent ventilation holes is 2-3 mm. The temperature sensor 1 is fixed in any ventilation hole at the outermost 601 side of the insulating heat transfer layer.
The electromagnetic coil 5 is installed on the electric automobile, and the electromagnetic coil 5 is located under the induction heating sheet 6. The installation position of the electromagnetic coil 5 can be flexibly arranged according to the space in the automobile, can be installed at a proper position in the automobile, and can also be installed on an automobile chassis as long as the installation position is ensured below the induction heating sheet 6.
In terms of a control circuit, the temperature sensor 1 is connected to the controller 3 through the AD converter 2; the controller 3 is connected to the electromagnetic coil 5 via the high-frequency switching device 4. Preferably, the temperature sensor 1 is a patch type temperature sensor, such as MCP9801-M/SN type SOP-8 patch import MICROCHIP/micro core temperature sensor. The AD converter 2 may employ an AD7888ARZ type analog-to-digital converter. The controller 3 can be a conventional AT89C51 series single chip microcomputer. The high-frequency switching device 4 is a relay or an IGBT (Insulated Gate Bipolar Transistor) device. The power supply of the controller 3 is directly supplied by the vehicle-mounted power supply. Further, an adjustable resistor is also connected in series between the controller 3 and the vehicle-mounted power supply, and the voltage is adjusted to the working voltage of the controller 3 by adjusting the adjustable resistor. The utility model discloses a devices such as temperature sensor, AD converter, controller, high frequency switch be batch production's conventional model, and the price is sold in the monobasic and is gone to ten yuan and vary, have characteristics with low costs, simple structure.
In the induction heating sheet 6, the insulating heat transfer layer 601 is a sheet structure made of a heat-conducting insulating material, and the thickness is only 1-2 mm. The induction heating layer 602 adopts a sheet structure made of high magnetic resistance materials, the magnetic conductivity is more than 100, and the thickness is only 2-3 mm. The heat insulation layer 603 is a sheet structure made of hard sponge, and the thickness is 1-2.5 mm. The hard sponge has good heat insulation effect and a buffering effect, and avoids the damage of the induction heating sheet 6 caused by the vibration in the motion process of the vehicle.
The contact surfaces of the insulating heat transfer layer 601, the induction heating layer 602 and the heat insulation layer 603 are the same in shape. The total thickness of the induction heating sheet 6 is only 4-7.5 mm, and the induction heating sheet can be completely arranged in gaps among the single batteries 7 in the battery pack, does not occupy extra space, and has the characteristics of small volume and light weight. The installation position of the electromagnetic coil 5 can be flexibly arranged according to the space in the vehicle, and the electromagnetic coil is only required to be arranged below the induction heating sheet 6, so that the electromagnetic coil and other equipment in the vehicle can be conveniently and simultaneously subjected to space optimization design. Even the electromagnetic coil 5 can be mounted on the chassis of the electric vehicle without occupying the space in the vehicle. The electromagnetic coil 5 is usually packaged in a square shell, has the thickness of 2-5cm, and also has the characteristics of small volume and light weight. The electromagnetic coil 5 can be made of iron, silicon steel sheets, soft magnetic alloy, manganese and other materials.
The working principle of the electric automobile battery heating device is as follows:
the temperature sensor 1 installed on the surface of the induction heating sheet 6 collects the surface temperature of the battery, the temperature data is converted into binary data through the AD converter 2 and is transmitted to the controller 3, the controller 3 controls the on-off of the high-frequency switching device 4 according to the surface temperature of the battery, and high-frequency switching signals are formed at two ends of the electromagnetic coil 5. The high-frequency switch signal generates a high-frequency alternating magnetic field on the electromagnetic coil 5, the induction heating sheet 6 above the electromagnetic induction heating sheet generates heat by induction based on the electromagnetic induction heating principle, and the generated heat is directly conducted to the surface of the battery through the insulating heat transfer layer 601 on one hand, and is radiated to the surface of the battery through the vent holes 604 to heat the battery on the other hand. After heating to a preset temperature, the heat is preserved by the heat preservation and insulation layer 603. The temperature determination process and the high frequency switch control process of the controller 3 are both prior art, and are not described herein again. By controlling the switching frequency of the high-frequency switching device 4, the heating temperature of the battery surface can also be controlled.
The battery heating device of the electric automobile of the utility model adopts the electromagnetic induction heating principle to generate heat, so that the installation position of the electromagnetic coil 5 can be flexibly set according to the space in the automobile, and the installation position is only required to be arranged below the induction heating sheet 6; the insulation heat transfer layer, the induction heating layer and the heat insulation layer of the induction heating sheet 6 are all made of extremely thin materials, the total thickness is only 4-7.5 mm, the induction heating sheet can be completely arranged in gaps among all the single batteries in the battery pack, no extra space is occupied, and the induction heating sheet has the characteristics of small volume, light weight and low cost.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the device and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. An electric vehicle battery heating apparatus, characterized in that, electric vehicle battery heating apparatus includes: the device comprises a temperature sensor, an AD converter, a controller, a high-frequency switching device, an electromagnetic coil and an induction heating sheet; the induction heating sheet is tightly attached to the surface of the battery of the electric automobile; the induction heating sheet comprises an insulation heat transfer layer, an induction heating layer and a heat insulation layer which are sequentially stacked; the insulating heat transfer layer is tightly attached to the surface of the battery of the electric automobile; the upper surface of the induction heating layer is in contact with the lower surface of the insulation heat transfer layer; the lower surface of the induction heating layer is in contact with the upper surface of the heat insulation layer; a plurality of vent holes are formed in the insulating heat transfer layer; the temperature sensor is fixed in a ventilation hole at the outermost side of the insulating heat transfer layer;
the electromagnetic coil is arranged on the electric automobile and is positioned under the induction heating sheet; the temperature sensor is connected with the controller through the AD converter; the controller is connected with the electromagnetic coil through the high-frequency switching device.
2. The electric vehicle battery heating apparatus of claim 1, wherein the temperature sensor is a patch temperature sensor.
3. The electric vehicle battery heating apparatus according to claim 1, wherein the high-frequency switching device is a relay or an IGBT device.
4. The heating device for the battery of the electric vehicle as claimed in claim 1, wherein the insulating heat transfer layer is a sheet structure made of a heat conducting and insulating material and has a thickness of 1-2 mm.
5. The battery heating device of claim 1, wherein the induction heating layer is a sheet structure made of high magnetic resistance material, and has a magnetic permeability of more than 100 and a thickness of 2-3 mm.
6. The heating device for the battery of the electric automobile according to claim 1, wherein the heat insulating layer is a sheet structure made of hard sponge and has a thickness of 1-2.5 mm.
7. The electric vehicle battery heating apparatus of claim 1, wherein the electromagnetic coil is mounted on a chassis of the electric vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921973137.XU CN210723297U (en) | 2019-11-15 | 2019-11-15 | Battery heating device of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921973137.XU CN210723297U (en) | 2019-11-15 | 2019-11-15 | Battery heating device of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210723297U true CN210723297U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921973137.XU Expired - Fee Related CN210723297U (en) | 2019-11-15 | 2019-11-15 | Battery heating device of electric automobile |
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| Country | Link |
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| CN (1) | CN210723297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328175A (en) * | 2021-05-28 | 2021-08-31 | 北京理工大学 | Battery heating system |
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2019
- 2019-11-15 CN CN201921973137.XU patent/CN210723297U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328175A (en) * | 2021-05-28 | 2021-08-31 | 北京理工大学 | Battery heating system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20201115 |