CN217848172U - Battery heating device and electric vehicle frame - Google Patents
Battery heating device and electric vehicle frame Download PDFInfo
- Publication number
- CN217848172U CN217848172U CN202221878944.5U CN202221878944U CN217848172U CN 217848172 U CN217848172 U CN 217848172U CN 202221878944 U CN202221878944 U CN 202221878944U CN 217848172 U CN217848172 U CN 217848172U
- Authority
- CN
- China
- Prior art keywords
- battery
- heating
- cavity
- battery heating
- power supply
- 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
Images
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
Abstract
The utility model discloses a battery heating device and electric motor car frame, wherein, battery heating device includes casing, heating element and power supply unit, the casing has first cavity and the second cavity of spaced, the casing is in first cavity with the interval department of second cavity is equipped with the via hole, heating element includes that the interval is located a plurality of heating members of first cavity, it is a plurality of the heating member will a plurality of installing zones are separated out to first cavity for the installation battery, power supply unit locates the second cavity, power supply unit passes through the pencil the via hole, with each the heating member electricity is connected the utility model discloses technical scheme in, battery heating device can be right at low temperature the battery heats, ensures the normal charge-discharge of battery is favorable to promoting the performance and the cold life of battery in the environment, simultaneously battery heating device simple structure, and occupation space is little, and is with low costs.
Description
Technical Field
The utility model relates to a battery heating device technical field, in particular to battery heating device and electric motor car frame.
Background
Under the severe situation of environmental pollution and energy shortage, vehicles using new energy as a power source are rapidly developed. The electric vehicle has the advantages of high efficiency, stable operation, zero emission and the like. However, in the case of a power battery, the battery activity may be reduced under low temperature conditions. The power supply of the electric vehicle is generally a lithium ion battery, which comprises lithium iron phosphate, lithium cobaltate, lithium manganate and the like, and when the ambient temperature is lower than 0 ℃, the internal resistance of the power supply is rapidly increased, the conductivity of the power supply is rapidly reduced, and the discharge rate of the power supply is very low. When the ambient temperature is lower than-10 ℃, the phenomenon that the electric vehicle is not charged can be caused, and great troubles are caused to users. At present, most of battery heating devices heat themselves by using electric energy of batteries through a heating element to improve the activity of the batteries, and when the batteries are heated to a certain temperature, the heating is stopped to perform charging operation; the need for such self-contained cryogenic heating devices requires additional battery layout, which can be cost prohibitive for the typical consumer. On the other hand, the battery heating device is less applied to the electric bicycle, so that it is necessary to design an electric bicycle heating device to overcome the above defects.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery heating device aims at can heating the battery at the low temperature, ensures the normal charge-discharge of battery. Meanwhile, the problems of high cost, large space and complex arrangement of the battery heating device are solved.
In order to achieve the above object, the present invention provides a battery heating device including:
the device comprises a shell, a first cavity and a second cavity which are separated from each other, wherein a through hole is formed in the position of the shell, which is separated from the first cavity and the second cavity;
the heating assembly comprises a plurality of heating elements which are arranged in the first chamber at intervals, and the plurality of heating elements divide the first chamber into a plurality of mounting areas for mounting batteries; and (c) a second step of,
and the power supply device is arranged in the second chamber, and the power supply device passes through the through hole through a wire harness so as to be electrically connected with each heating element.
Optionally, the battery heating apparatus further includes a temperature sensor, and the temperature sensor is disposed in the first chamber and corresponds to each of the mounting regions.
Alternatively, each of the heating members may include a PTC heater.
Optionally, a main switch is arranged on a main trunk line of the PTC heater connected with the power supply device;
two parallel branches are also arranged on the main road, and a temperature shift switch is respectively arranged on the two parallel branches;
the PTC heaters are arranged in two and are respectively arranged on the two parallel branches.
Optionally, opposite side ends of each of the heating members are provided with insulating heat transfer layers.
Optionally, the side portions of each heating element and each insulating heat transfer layer are abutted against the inner wall of the housing, and the side portions of the heating element and the insulating heat transfer layer are provided with corresponding ventilation openings.
Optionally, the battery heating device further comprises an alarm device, and the alarm device is arranged in the second chamber.
Optionally, the inner wall of the shell is provided with a heat-insulating flame-retardant layer; and/or the presence of a gas in the gas,
the shell is made of an insulating material, and the insulating material comprises glass fibers.
Optionally, the inner wall of the shell is provided with a plurality of clamping grooves corresponding to the side parts of the heating element so as to clamp the heating element.
The utility model also provides an electric vehicle, the electric vehicle includes battery heating device, battery heating device includes:
the shell is provided with a first cavity and a second cavity which are separated, and a through hole is formed in the position of the shell, which is separated from the first cavity and the second cavity;
the heating assembly comprises a plurality of heating elements which are arranged in the first chamber at intervals, and the plurality of heating elements divide the first chamber into a plurality of mounting areas for mounting batteries; and the number of the first and second groups,
and the power supply device is arranged in the second chamber, and the power supply device passes through the through hole through a wire harness so as to be electrically connected with each heating element.
The utility model discloses technical scheme is through adopting first cavity is equipped with each heating member, and each the installation is separated out to the heating member the installing zone, each the heating member is located each between the battery, with each the surface contact of battery reduces calorific loss, improves heating efficiency. The second chamber is provided with the power supply device, and the first chamber is separated from the second chamber, so that the situation that when the power supply device and each battery are arranged in the same space, heat loss is increased, the heating effect is influenced, the structural clearance is reduced, and collision caused by shaking of each battery is avoided. The power supply device is used for supplying power to the heating elements, extra arrangement is not needed to be carried out on the batteries, and the battery heating device and the batteries are arranged respectively, so that the production cost of the batteries is reduced. The battery heating device can heat the battery at a low temperature, ensures normal charging and discharging of the battery, is beneficial to improving the performance and the service life of the battery in a cold environment, and has the advantages of simple structure, small occupied space 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 needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a battery heating apparatus according to the present invention;
FIG. 2 is a schematic view of the installation of the temperature sensor of FIG. 1;
FIG. 3 is a schematic circuit diagram of the parallel branches of the PTC heater of FIG. 1;
fig. 4 is a schematic structural view of an embodiment of the frame of the electric vehicle of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
211 | |
| 1 | |
212 | |
| 11 | The |
213 | Wen |
| 111 | |
22 | Insulating |
| 12 | |
23 | |
| 13 | Via |
3 | |
| 14 | Heat-insulating flame- |
31 | Wire harness |
| 2 | Heating assembly | 4 | |
| 21 | |
200 | Electric vehicle frame |
The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts belong to the protection scope of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Under the severe situation of environmental pollution and energy shortage, vehicles using new energy as a power source are rapidly developed. The electric vehicle has the advantages of high efficiency, stable operation, zero emission and the like. However, in the case of a power battery, the battery activity may be reduced under low temperature conditions. The power supply of the electric vehicle is generally a lithium ion battery, which comprises lithium iron phosphate, lithium cobaltate, lithium manganate and the like, and when the ambient temperature is lower than 0 ℃, the internal resistance of the power supply is rapidly increased, the conductivity of the power supply is rapidly reduced, and the discharge rate of the power supply is very low. When the ambient temperature is lower than-10 ℃, the phenomenon that the electric vehicle is not charged can be caused, and great troubles are caused to users. At present, most of battery heating devices perform self-heating by using the electric energy of batteries through a heating element to improve the activity of the batteries, and when the batteries are heated to a certain temperature, the heating is stopped to perform charging operation; this need for a self-contained cryogenic heating device requires additional battery placement, which can be cost prohibitive and unacceptable to the average consumer. On the other hand, the battery heating device is less applied to the electric bicycle, so that it is necessary to design an electric bicycle heating device to overcome the above defects.
In view of this, the utility model provides a battery heating device, fig. 1 to fig. 4 do the utility model provides an embodiment of battery heating device, the battery heating device can heat the battery at low temperature, ensures the normal charge and discharge of battery is favorable to promoting the performance and the life-span of battery in the cold environment, simultaneously battery heating device simple structure, occupation space is little, and is with low costs, and the following will combine specific figure to explain battery heating device.
Referring to fig. 1 to 4, the battery heating apparatus 100 includes a housing 1, a heating assembly 2 and a power supply apparatus 3, the housing 1 has a first chamber 11 and a second chamber 12 which are separated from each other, the housing 1 is provided with a through hole 13 at a separation between the first chamber 11 and the second chamber 12, the heating assembly 2 includes a plurality of heating members 21 which are separated from the first chamber 11, the plurality of heating members 21 divide the first chamber 11 into a plurality of mounting regions 111 for mounting a battery, the power supply apparatus 3 is provided in the second chamber 12, and the power supply apparatus 3 passes through the through hole 13 by a wire harness 31 to be electrically connected to each of the heating members 21.
The utility model discloses technical scheme is through adopting first cavity 11 is equipped with each heating member 21, and each the installation is gone out to heating member 21 interval the battery installing zone 111, each the heating member 21 is located each between the battery, with each the surface contact of battery reduces calorific loss, improves heating efficiency. The second cavity 12 is provided with the power supply device 3, and the first cavity 11 is separated from the second cavity 12, so that the situation that when the power supply device 3 and each battery are arranged in the same space, the heat loss is increased, the heating effect is influenced, the structural clearance is reduced, and the situation that each battery shakes to generate collision is avoided. The power supply device 3 supplies power to each heating element 21, so that the battery heating device 100 and each battery are respectively arranged without additionally arranging each battery, and the production cost of each battery is reduced. Battery heating device 100 can be right at low temperature the battery heats, ensures the normal charge-discharge of battery is favorable to promoting the performance and the life-span of battery in the cold environment, simultaneously battery heating device 100 simple structure, occupation space is little, and is with low costs.
The power supply device 3 is not particularly limited, and may be a storage battery, so as to facilitate preheating the battery in advance, or provide heating protection when the battery runs, and avoid the influence of low temperature on the performance and the service life of the battery; or an external charger, and the heating elements 21 are powered by a sufficient external power supply, so that the charging efficiency is improved.
It should be noted that, in the arrangement of the storage battery and the external charger, they may exist alternatively or simultaneously, and obviously, the technical effect brought by the simultaneous existence is the best.
The wire harness 31 is not particularly limited, and in this embodiment, the wire harness 31 is made of a teflon cable, and has the characteristics of high temperature resistance, softness and easiness in bending.
In order to conveniently judge the heating requirement according to the temperature, the battery heating device 100 further includes a temperature sensor 4, the temperature sensor 4 is disposed in the first chamber 11 and is disposed corresponding to each of the mounting regions 111, so as to conveniently and accurately detect the specific temperature of each of the batteries. Further, the temperature sensor 4 is not particularly limited, and in the present embodiment, the temperature sensor 4 includes a sheet-type thermocouple sensor, and since the heating temperature of the battery heating apparatus 100 is below 250 ℃, the monitoring range and sensitivity of the sheet-type thermocouple sensor can be well satisfied. The temperature sensor 4 adopts a multichannel synchronous structure to acquire temperature signals.
The heating members 21 are not particularly limited, in this embodiment, each of the heating members 21 includes a PTC heater 211, the PTC heater 211 heats up by self after being energized to make the resistance value enter a jump zone, the surface temperature of the PTC heater 211 keeps a constant value, and the temperature is only related to the curie temperature and the applied voltage of the PTC heater 211 and is basically unrelated to the ambient temperature, so that the heating members have the advantages of small thermal resistance, high thermal conversion efficiency, compact structure, large working voltage range and stable heating temperature, and can well meet the heating requirements of the battery. Further, the PTC heater 211 includes a low-electric PTC ceramic heating element.
In order to avoid the temperature of battery is low excessively, and heating efficiency is not enough PTC heater 211 with be equipped with master switch 212 on the trunk road that power supply unit 3 connects, conveniently open and close the heating still be equipped with two parallelly connected branches on the trunk road, two respectively be equipped with temperature shelves switch 213 on the parallelly connected branch road, PTC heater 211 sets up two, and establishes respectively on two parallelly connected branch road. When the temperature of the battery is lower than a first preset temperature value, in order to avoid affecting charging and discharging, the Wen Dang switch 213 on one of the parallel branches is closed, a normal heating mode is started to heat the battery, when the temperature of the battery is further reduced to be lower than a second preset temperature value, the Wen Dang switches 213 on the two parallel branches are both closed, a fast heating mode is started to improve heating efficiency, and the temperature of the battery is increased to the temperature as soon as possible, in this embodiment, the first preset temperature value is-5 ℃, the second preset temperature value is-10 ℃, and in other embodiments, the setting is specifically not limited according to the characteristics of the battery.
In order to avoid each heating member 21 electromagnetic interference the battery, each the relative both sides end branch of heating member 21 is equipped with insulating heat transfer layer 22, and is insulating in order to improve the security performance, insulating heat transfer layer 22 is concrete not limited, in this embodiment, insulating heat transfer layer 22 includes insulating heat transfer silica gel piece, insulating heat transfer silica gel piece has that heat conduction efficiency is high, insulating, installation change are simple and the advantage of price/performance ratio is high, insulating heat transfer layer 22 thickness is too big can reduce heat transfer effect, and heating efficiency is low, and insulating effect can be reduced to thickness undersize, insulating heat transfer silica gel piece thickness is thin, can set up to be not less than 2mm and not higher than 3mm.
In order to fully use the space in the first chamber 11, the side portions of the heating members 21 and the insulating heat transfer layers 22 are in contact with the inner wall of the housing 1, and in order to prevent the battery heating device 100 from thermally expanding, the side portions of the heating members 21 and the insulating heat transfer layers 22 are provided with corresponding ventilation openings 23. Obviously, the specific number and position of the ventilation openings 23 are not limited, and in order to ensure the function of the insulating heat transfer layer 22, the ventilation openings 23 are not too many, in this embodiment, rhombic ventilation openings 23 are respectively arranged on four vertex sides of the insulating heat transfer layer 22, the ventilation openings 23 are arranged at the gaps between the side portions of the heating members 21 and the inner wall, and the ventilation openings 23 of the insulating heat transfer layer 22 and the ventilation openings 23 of the corresponding heating members 21 form a conductive ventilation loop, so that the battery heating device 100 is prevented from expanding due to heating bulges, and meanwhile, the heat emitted by the heating members 21 can also heat the corresponding batteries through the ventilation openings 23, thereby improving the heating efficiency.
Because battery heating device 100 probably heating trouble, battery heating device 100 still includes alarm device, alarm device locates second cavity 12, alarm device passes through pencil 31 passes through via hole 13, with temperature sensor 4 electricity is connected, receives temperature signal, if heating member 21 works after a period the temperature of battery intensification is unusual, alarm device judges battery heating device 100 breaks down, reports to the police, and further, alarm device cuts off master switch 212 simultaneously, in order to stop the heating, avoids because of the unusual accident that takes place of heating, and similarly, in an embodiment, alarm device can also convey trouble information to the electric motor car panel board in order to indicate the user, alarm device has a lot of, and is specific unlimited, alarm device includes voice alarm, vibrations warning and buzzing siren etc. can remind the user can.
In order to further improve the safety performance of the battery heating apparatus 100, the inner wall of the housing 1 is provided with a heat insulation flame retardant layer 14, in this embodiment, the heat insulation flame retardant layer 14 may be adhered to the inner wall of the housing 1, so as to improve the heat utilization rate and improve the safety performance, and the adhesive may be made of a material with high temperature resistance and stable property. Further, the heat-insulating and flame-retardant layer 14 is made of an aerogel heat-insulating felt, the occupied space of the battery heating device 100 is increased due to the fact that the thickness is large, and the heat-insulating and flame-retardant performance is poor due to the fact that the thickness is small, so that the effect is better when the thickness of the heat-insulating and flame-retardant layer 14 is not smaller than 5mm and not larger than 7mm, the aerogel heat-insulating felt has the advantages of being heat-insulating and heat-preserving, light in weight, flexible and flexible, and easy to bend, convenient to install, and capable of achieving certain buffering performance, and the thickness of materials is reduced while the performance of the materials is improved.
Likewise, the material of the housing 1 includes an insulating material, and the insulating material includes glass fiber, and the glass fiber has the advantages of light weight, corrosion resistance, dust and water resistance, and good electrical insulation, and improves the safety performance and the service life of the battery heating apparatus 100.
It should be noted that the materials of the heat-insulating flame-retardant layer 14 and the housing 1 may be alternatively or simultaneously present, and obviously, the technical effect brought by the simultaneous presence is the best.
In order to fix the heating member 21 in the first chamber 11, the battery heating apparatus 100 is further provided with a fastening device to fix the heating member 21, obviously, the fastening device has various, specifically, but not limited, in this embodiment, the fastening device includes a plurality of clamping grooves provided on the inner wall corresponding to the side portion of the heating member 21 to clamp the heating member 21. In other embodiments, the fastening device may further include a buckle disposed on the inner wall and a buckle hole disposed on the heating element 21, and the buckle is fixed in cooperation with the buckle hole.
In order to further improve the safety performance of the battery heating apparatus 100, a high temperature resistant flame retardant material is used for the fastening device.
The utility model discloses still provide an electric motor car frame 200, electric motor car frame 200 includes battery heating device 100, above-mentioned embodiment is referred to the concrete structure of battery heating device 100, because this electric motor car frame 200 has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least. The description is omitted.
It should be noted that, in the present invention, the specific structure of the electric vehicle frame 200 is not limited.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A battery heating apparatus, comprising:
the device comprises a shell, a first cavity and a second cavity which are separated from each other, wherein a through hole is formed in the position of the shell, which is separated from the first cavity and the second cavity;
the heating assembly comprises a plurality of heating elements which are arranged in the first chamber at intervals, and the plurality of heating elements divide the first chamber into a plurality of mounting areas for mounting batteries; and (c) a second step of,
and the power supply device is arranged in the second chamber, and the power supply device passes through the through hole through a wire harness so as to be electrically connected with each heating element.
2. The battery heating apparatus as claimed in claim 1, further comprising a temperature sensor disposed in the first chamber and corresponding to each of the mounting regions.
3. The battery heating apparatus as claimed in claim 2, wherein each of the heating members comprises a PTC heater.
4. The battery heating apparatus as claimed in claim 3, wherein a main switch is provided on a trunk line where the PTC heater is connected to the power supply device;
two parallel branches are also arranged on the main road, and a temperature shift switch is respectively arranged on the two parallel branches;
the PTC heaters are arranged in two and are respectively arranged on the two parallel branches.
5. The battery heating apparatus as claimed in claim 1, wherein opposite side ends of each of the heating members are provided with insulating heat transfer layers.
6. The battery heating apparatus as claimed in claim 5, wherein the heating elements and the side portions of the insulating heat transfer layers are abutted against the inner wall of the case, and the heating elements and the side portions of the insulating heat transfer layers are provided with corresponding ventilation openings.
7. The battery heating apparatus of claim 1, further comprising an alarm device disposed in the second chamber.
8. The battery heating apparatus according to claim 1, wherein an inner wall of the case is provided with a heat insulating flame retardant layer; and/or the presence of a gas in the atmosphere,
the shell is made of an insulating material, and the insulating material comprises glass fibers.
9. The battery heating apparatus as claimed in claim 1, wherein a plurality of engaging grooves are formed on the inner wall of the housing corresponding to the side of the heating member to engage with the heating member.
10. An electric vehicle frame comprising a battery heating apparatus as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221878944.5U CN217848172U (en) | 2022-07-18 | 2022-07-18 | Battery heating device and electric vehicle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221878944.5U CN217848172U (en) | 2022-07-18 | 2022-07-18 | Battery heating device and electric vehicle frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217848172U true CN217848172U (en) | 2022-11-18 |
Family
ID=84039731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221878944.5U Active CN217848172U (en) | 2022-07-18 | 2022-07-18 | Battery heating device and electric vehicle frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217848172U (en) |
-
2022
- 2022-07-18 CN CN202221878944.5U patent/CN217848172U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180013106A1 (en) | Battery pack | |
| JP5786568B2 (en) | Power storage device and power storage system | |
| CN108428927B (en) | Power battery, power battery temperature control method and new energy vehicle | |
| CN102404883A (en) | Seat heater using sheet heating element and seat with seat heater | |
| CN111599959B (en) | Battery module and light-duty commodity circulation car | |
| CN217848172U (en) | Battery heating device and electric vehicle frame | |
| CN114024081A (en) | Power battery | |
| CN213340651U (en) | Battery module | |
| CN205680760U (en) | A kind of new energy car battery bag heat management system | |
| CN109148993A (en) | Cell apparatus and new-energy automobile | |
| CN210142675U (en) | Battery module, battery system with same and electric vehicle | |
| CN211455908U (en) | New energy automobile power battery gradual change formula heating plate | |
| CN212542559U (en) | Power battery and car | |
| CN101689685B (en) | Measurement arrangement for measuring a temperature of a rechargeable power supply device | |
| CN220065891U (en) | Soaking plate, cylindrical cell battery module and electric vehicle | |
| CN110571373A (en) | Temperature sensing fire protection device, electric core module, battery system and vehicle | |
| CN211320162U (en) | Battery module with heat insulation structure | |
| CN210142674U (en) | Side plate for battery module, battery system and electric vehicle | |
| CN212517338U (en) | Electric automobile battery fire prevention protection device | |
| CN213278194U (en) | Fire-resistant battery heating plate | |
| CN220087815U (en) | High-temperature-resistant circuit board for heating silica gel heating film | |
| CN210101358U (en) | Electric automobile is with filling electric pile from taking burglar alarm ability | |
| CN220731661U (en) | Battery box | |
| CN209116833U (en) | A kind of electric heat-storage heating device and the vehicle using the device | |
| KR102511975B1 (en) | Heater for electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |