CN209592138U - Battery modules, the assembly tooling for assembling the battery modules and vehicle - Google Patents
Battery modules, the assembly tooling for assembling the battery modules and vehicle Download PDFInfo
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- CN209592138U CN209592138U CN201920492799.9U CN201920492799U CN209592138U CN 209592138 U CN209592138 U CN 209592138U CN 201920492799 U CN201920492799 U CN 201920492799U CN 209592138 U CN209592138 U CN 209592138U
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- clamping
- battery core
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- battery
- shell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to battery technology fields, a kind of battery modules, the assembly tooling for assembling the battery modules and vehicle are provided, the battery modules include: battery core unit, the battery core unit includes being stacked with to be formed as multiple battery cores an of entirety, and each battery core is sequentially arranged along the length direction of the battery core unit；Shell, the shell is formed as case structure, the inside of the shell is formed with accommodating chamber, and the battery core unit is placed in the accommodating chamber, and the shell can apply the pressing force extended along the length direction of the battery core unit to the battery core unit.In the accommodating chamber that battery core unit integrally can be put into shell in assembly by battery modules described in the utility model, improve assembly efficiency and assembling quality, save human cost and time cost, shell can apply the pressing force extended along the length direction of battery core unit to battery core unit, extend the service life of battery core.
Description
Technical field
The utility model relates to battery technology field, in particular to a kind of battery modules, for assembling the battery modules
Assembly tooling and vehicle.
Background technique
With getting worse for energy crisis and environmental pollution, various countries increasingly pay attention to the exploitation of new-energy automobile.Electricity
Mainstream energy storage device of the pond as new-energy automobile, the performances such as service life, stability directly affect the performance of vehicle and continue
Boat ability.
In tradition, the battery core of inside battery battery case in battery entirety assembling process stacks assembly together, causes to fill
With complex procedures, waste of time, and multiple battery cores stack respectively causes build-up tolerance larger, and each core strueture is more loose
It dissipates, influences the service life of battery core.
Thus, it is desirable to have a kind of battery modules can overcome or at least mitigate the drawbacks described above of the prior art.
Utility model content
In view of this, the utility model is directed to a kind of battery modules, to improve its assembly efficiency and service life.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of battery modules, the battery modules include: battery core unit, and the battery core unit includes being stacked with to be formed
For multiple battery cores of an entirety, each battery core is sequentially arranged along the length direction of the battery core unit；Shell, the shell
The bodily form becomes case structure, and the inside of the shell is formed with accommodating chamber, and the battery core unit is placed in the accommodating chamber
In, and the shell can apply the pressing force extended along the length direction of the battery core unit to the battery core unit.
Further, along the length direction of the battery core unit, the battery core unit includes being fixedly installed on the battery core
The first clamping end plate and the second clamping end plate at the both ends of unit.
Further, the first clamping end plate is formed with the first mating groove for cooperating with assembly tooling, described
Second clamping end plate is formed with the second mating groove for cooperating with the assembly tooling, wherein first mating groove
Short transverse with second mating groove along the battery core unit extends.
Further, the side-walls of first mating groove are formed with the first card for cooperating with the assembly tooling
Groove is connect, the side-walls of second mating groove are formed with the second clamping groove for cooperating with the assembly tooling,
In, first clamping groove and second clamping groove extend along the width direction of the battery core unit；And/or described
The side of the bottom of one clamping end plate and/or the second clamping end plate close to the shell is formed with lead-in chamfered.
Further, the battery core unit of the bottom of the battery core unit and the width direction along the battery core unit
Heat-conducting glue is filled at both ends.
Further, along the length direction of the battery core unit, the battery core unit and the shell are interference fit；
And/or the pressing force is 50Kgf to 450Kgf.
Compared with the existing technology, battery modules described in the utility model have the advantage that
Multiple battery cores stacking of the battery core unit of battery modules described in the utility model is formed as an entirety, so that electric
In the accommodating chamber that battery core unit integrally can be put into shell in assembly by Chi Mo group, the assembly technology of battery modules is optimized,
Assembly efficiency and assembling quality are improved, human cost and time cost are saved.And shell can apply to battery core unit along electricity
The pressing force that the length direction of core unit extends extends the service life of battery core, and improve so that each battery core is pressed together
Its stability and reliability.
The another object of the utility model is to propose a kind of assembly tooling, in order to the assembly of above-mentioned battery modules.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
It is a kind of for assembling the assembly tooling of above-mentioned battery modules, the assembly tooling includes connecting rod (41), fixed peace
First clamping plate at one end loaded on the connecting rod and the second folder being movably installed at the other end of the connecting rod
Plate, the second clamping plate can be moved along the length direction of the connecting rod the battery core unit is clamped in first folder
Between plate and the second clamping plate.
Further, the first clamping plate includes matching with the first mating groove of the first clamping end plate of the battery core unit
The the first clamping leg closed, the second clamping plate include cooperating with the second mating groove of the second clamping end plate of the battery core unit
The second clamping leg, wherein the thickness of the first clamping leg is less than or equal to the depth of first mating groove, described the
The thickness of two clamping legs is less than or equal to the depth of second mating groove.
Further, the first clamping leg is formed with the with the first clamping groove cooperation of the first clamping end plate
One clamping protrusion, the second clamping leg are formed with the second clamping with the second clamping groove cooperation of the second clamping end plate
Protrusion, wherein along the width direction of the battery core unit, the width of the first clamping leg and the width of first mating groove
The difference of degree is greater than the size of the first clamping protrusion, the width of the second clamping leg and the width of second mating groove
Difference be greater than it is described second clamping protrusion size；And/or the first clamping plate and the second clamping plate are to the battery core unit
The clamping force of application is greater than the pressing force.
Assembly tooling described in the utility model can further increase the assembly efficiency of battery modules.
The another object of the utility model is to propose a kind of vehicle, to improve the assembly efficiency and use of its battery modules
Service life.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of vehicle, the vehicle are provided with according to battery module described above.
Possessed advantage is identical compared with the existing technology with above-mentioned battery modules for the vehicle, and details are not described herein.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The exemplary embodiment and its explanation of type are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 is the decomposition diagram of the battery modules according to a kind of embodiment of the utility model；
Fig. 2 is the schematic diagram of the first clamping end plate of battery modules shown in FIG. 1；
Fig. 3 is the schematic diagram of the assembling die according to a kind of embodiment of the utility model；
Fig. 4 is that assembling die shown in Fig. 3 clamps the schematic diagram after battery core unit.
Description of symbols:
1- shell, 11- accommodating chamber, 2- battery core unit, 21- battery core, 22- first clamp end plate, and 221- first cooperates recessed
Slot, the first clamping groove of 222-, the first lead-in chamfered of 223-, 23- second clamp end plate, the second mating groove of 231-, 232- the
Two clamping grooves, the second lead-in chamfered of 233-, 4- assembly tooling, 41- connecting rod, 42- first clamping plate, 421- first clamp leg,
422- first is clamped protrusion, 43- second clamping plate, and 431- second clamps leg, and 432- second is clamped protrusion.
Specific embodiment
It should be noted that in the absence of conflict, the spy in embodiment and embodiment in the utility model
Sign can be combined with each other.
The utility model is described in detail below with reference to the accompanying drawings and in conjunction with embodiment.
One aspect according to the present utility model provides a kind of battery modules, and referring to Fig. 1, the battery modules include: electricity
Core unit 2, battery core unit 2 include being stacked with to be formed as multiple battery cores 21 an of entirety, and each battery core 21 is along battery core list
The length direction of member 2 is sequentially arranged；Shell 1, shell 1 are formed as case structure, and the inside of shell 1 is formed with accommodating chamber 11,
Battery core unit 2 is placed in accommodating chamber 11, and shell 1 can apply the length direction along battery core unit 2 to battery core unit 2
The pressing force of extension.
The stacking of multiple battery cores 21 of the battery core unit 2 of above-mentioned battery modules is formed as an entirety, so that battery modules exist
2 entirety of battery core unit can be put into the accommodating chamber 11 of shell 1 when assembly, optimize the assembly technology of battery modules, improve
Assembly efficiency and assembling quality save human cost and time cost.And shell 1 can apply to battery core unit 2 along battery core
The pressing force that the length direction of unit 2 extends extends the service life of battery core 21 so that each battery core 21 is pressed together, and
Improve its stability and reliability.
Battery core unit 2 can be integrally assembled in accommodating chamber 11 when assembling by assembly tooling, to avoid to battery core 21
Damage, it is desirable that the chucking power of assembly tooling cannot be excessive.Further, along the length direction of battery core unit 2, battery core unit 2 is wrapped
The the first clamping end plate 22 and the second clamping end plate 23 at the both ends for being fixedly installed on battery core unit 2 are included, in order to battery core unit 2
Integral retaining assembly, and to avoid the clamping in assembling process to damage to battery core unit 2.
Further, referring to Fig. 1 and Fig. 2, what the first clamping end plate 22 was formed with for cooperating with assembly tooling 4 first matches
Groove 221 is closed, the second clamping end plate 23 is formed with the second mating groove 231 for cooperating with assembly tooling 4, wherein first
Mating groove 221 and the second mating groove 231 extend along the short transverse of battery core unit 2, convenient for the clamping position of assembly tooling,
Assembly efficiency is improved, and improves the accuracy and stability of assembly.
Referring to fig. 2 with 4, the side-walls of the first mating groove 221 are formed with the first clamping for cooperating with assembly tooling 4
Groove 222, the side-walls of the second mating groove 231 are formed with the second clamping groove 232 for cooperating with assembly tooling 4,
In, the first clamping groove 222 and the second clamping groove 232 extend along the width direction of battery core unit 2, enable assembly tooling 4
It is enough connected in along the first clamping groove 222 and the second clamping groove 232 of the width direction extension of battery core unit 2, carrying electricity
The overall weight of core unit 2 avoids the landing of self-assembly tooling 4 under the effect of gravity of battery core unit 2 in assembling process.Its
In, the first mating groove 221, the first clamping groove 222, the shape and ruler of the second mating groove 231 and the second clamping groove 232
It is very little to carry out design appropriate according to the design needs, for example, strip, circle, polygon etc..
Further, the first clamping end plate 22 and/or the second clamping end plate 23 are formed with close to the side of the bottom of shell 1
Lead-in chamfered plays guiding role when battery core unit 2 is packed into, facilitates quick, the smooth assembly of battery core unit 2, the guidance
The tilt angle on inclined-plane can make appropriate choice according to actual needs, and preferably 95 degree to 175 degree, in diagram preferred implementation side
In formula, the tilt angle of the lead-in chamfered is 120 degree.According to assembly needs, user can clamp end plate 22 and second first
Clamp the upper setting lead-in chamfered of one or both of end plate 23, wherein in order to enable the assembly of battery core unit 2 is more smooth,
In the shown embodiment, 223 He of the first lead-in chamfered is respectively arranged on the first clamping end plate 22 and the second clamping end plate 23
Second lead-in chamfered 233.
Further, it the bottom of battery core unit 2 and is filled out along the both ends of the battery core unit 2 of the width direction of battery core unit 2
Filled with heat-conducting glue 3, heat-conducting glue 3 is capable of fixing battery core unit 2, improves battery performance, and improve its stability and safety, and
The heat-conducting glue 3 can also be used to conduct heat, and facilitates battery core 21 and is in temperature appropriate, the concrete type of heat-conducting glue 3 can be according to reality
It needs to make appropriate choice.
Along the width direction of battery core unit 2, the gap between shell 1 and battery core unit 2 is preferably 0.25mm to 2.5mm,
The filling thickness heat-conducting glue 3 appropriate between battery core unit 2 and shell 1.
The filling mode of heat-conducting glue 3 be usually by battery core unit 2 be filled to after the assembly is completed battery core unit 2 and shell 1 it
Between gap in, but be easy to cause heat-conducting glue that can not be stuffed entirely with the bottom of battery core unit 2 in this way, and there are more bubble,
Influence the performance of battery modules.It is therefore preferable that suitable thermally conductive to be poured into accommodating chamber 2 before assembling battery core unit 2
Glue, when battery core unit 2 is placed into accommodating chamber 2, heat-conducting glue is extruded be filled between battery core unit 2 and shell 1 between
In gap, being sufficient filling with for heat-conducting glue 3 is ensured.
Shell 1 can apply pressing force to battery core unit 2 by any suitable mode, for example, corresponding to first in shell 1
The moveable compressing member of setting at the both ends of end plate 22 and the second clamping end plate 23 is clamped, to apply pressing force to battery core unit 2,
But this will lead to battery module structure complexity, it is therefore preferred that along the length direction of battery core unit 2, battery core unit 2 and shell
Body 1 is interference fit, so that the side wall of shell 1 applies pressing force to battery core unit 2, structure is simple, high reliablity, wherein electricity
Magnitude of interference between core unit 2 and shell 1 can make appropriate choice according to actually required clamping force.
By applying the life curve that different pressing forces obtains battery modules to battery core unit 2, and according to service life song
Line analysis obtains, shell 1 to the pressing force that battery core unit 2 applies be preferably 50Kgf to 450Kgf so that battery core 21 have it is longer
Service life.
The structure and molding mode of shell 1 can make appropriate choice according to actual needs, such as in illustrated embodiment
Shown cuboid box structure, the shell 1 can integrally casting shaping, can also by multiple plates weld be formed as one,
User can make appropriate choice according to actual needs.Also, it can also be arranged in case of need on the top of shell 1 suitable
When lid.
The utility model another aspect provides a kind of for assembling the assembly tooling of above-mentioned battery modules, referring to figure
3, the assembly tooling 4 includes connecting rod 41, the first clamping plate 42 that is fixedly installed at one end of connecting rod 41 and moveable
The second clamping plate 43 being installed at the other end of connecting rod 41, second clamping plate 43 can be moved along the length direction of connecting rod 41 with
Battery core unit 2 is clamped between first clamping plate 42 and second clamping plate 43.
For assembling above-mentioned battery mould, the battery core unit 2 that can be formed into an entirety is whole for above-mentioned assembly tooling 4
Clamping is assembled in accommodating chamber 11, and structure is simple, easy to use, improves the assembly efficiency of battery modules.
Further, first clamping plate 42 includes matching with the first mating groove 221 of the first clamping end plate 22 of battery core unit 2
The the first clamping leg 421 closed, second clamping plate 43 include the second mating groove 231 with the second clamping end plate 23 of battery core unit 2
Second clamping leg 431 of cooperation, is fast and accurately clamped on battery core unit 2 convenient for assembly tooling 4, improves assembly efficiency, and
Other face first clamping plate 42 and second clamping plate 43 are slided along the width direction of battery core unit 2.Wherein, the thickness of the first clamping leg 421
Less than or equal to the depth of the first mating groove 221, the thickness of the second clamping leg 431 is less than or equal to the second mating groove 231
Depth so that the first clamping leg 421 and the second clamping leg 431 are relative to the first clamping end plate 22 and the second clamping end plate 23
Outer surface depressions are concordant (being preferably recessed), and assembly tooling 4 in assembling process is avoided to interfere with shell 1.
Further, the first clamping leg 421 is formed with the with the first clamping groove 222 cooperation of the first clamping end plate 22
One clamping protrusion 422, the second clamping leg 431 are formed with second with the second clamping groove 232 cooperation of the second clamping end plate 23
Clamping protrusion 432, so that the first clamping protrusion 422 and the second clamping protrusion 432 are able to be connected in the width along battery core unit 2
It spends in the first clamping groove 222 and the second clamping groove 232 that direction extends, carries the overall weight of battery core unit 2, avoid filling
With battery core unit 2 in the process, self-assembly tooling 4 is slid under the effect of gravity.
Referring to fig. 4, along the width direction of battery core unit 2, the width of the first clamping leg 431 and the first mating groove 221
The difference of width is greater than the size of the first clamping protrusion 422, the width of the second clamping leg 431 and the width of the second mating groove 231
Difference be greater than the size of the second clamping protrusion 432, even if the side wall in shell 1 is pressed in the first clamping end plate 22 and the second clamping
When on end plate 23, can also ensure that can smoothly be taken out after battery core unit 2 is placed into accommodating chamber 11 by assembly tooling 4.
Further, due in illustrated preferred embodiment, along the length direction of battery core unit 2, battery core unit 2 and shell
Body 1 is interference fit, because, in order to ensure that battery core unit 2 can be smoothly installed in accommodating chamber 11, first clamping plate 42 and the
The clamping force that second splint 43 applies to battery core unit 2 is greater than the pressing force.For example, when pressing force is 50Kgf to 450Kgf,
Clamping force is 100Kgf to 800Kgf.
Another aspect according to the present utility model, provides a kind of vehicle, and the vehicle is provided with according to described above
Battery module.Advantage possessed by the vehicle is identical as above-mentioned battery module, and details are not described herein.
The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all
Within the spirit and principles of the utility model, it is practical new to should be included in this for any modification, equivalent replacement, improvement and so on
Within the protection scope of type.
Claims (10)
1. a kind of battery modules, which is characterized in that the battery modules include:
Battery core unit (2), the battery core unit (2) include being stacked with to be formed as multiple battery cores (21) an of entirety, respectively
A battery core (21) is sequentially arranged along the length direction of the battery core unit (2)；
Shell (1), the shell (1) are formed as case structure, and the inside of the shell (1) is formed with accommodating chamber (11), institute
It states battery core unit (2) to be placed in the accommodating chamber (11), and the shell (1) can be applied to the battery core unit (2)
Add the pressing force of the length direction extension along the battery core unit (2).
2. battery modules according to claim 1, which is characterized in that described along the length direction of the battery core unit (2)
Battery core unit (2) includes the first clamping end plate (22) and the second clamping being fixedly installed at the both ends of the battery core unit (2)
End plate (23).
3. battery modules according to claim 2, which is characterized in that it is described first clamping end plate (22) be formed with for
Assembly tooling (4) cooperation the first mating groove (221), it is described second clamping end plate (23) be formed with for the assembler
Fill the second mating groove (231) of (4) cooperation, wherein first mating groove (221) and second mating groove
(231) extend along the short transverse of the battery core unit (2).
4. battery modules according to claim 3, which is characterized in that
The first clamping that the side-walls of first mating groove (221) are formed with for cooperating with the assembly tooling (4) is recessed
Slot (222), the side-walls of second mating groove (231) are formed with the second card for cooperating with the assembly tooling (4)
Connect groove (232), wherein first clamping groove (222) and second clamping groove (232) are along the battery core unit
(2) width direction extends；And/or
The side of the bottom of first clamping end plate (22) and/or second clamping end plate (23) close to the shell (1)
It is formed with lead-in chamfered.
5. battery modules according to claim 1, which is characterized in that the bottom of the battery core unit (2) and along the electricity
Heat-conducting glue (3) are filled at the both ends of the battery core unit (2) of the width direction of core unit (2).
6. battery modules described in any one of -4 according to claim 1, which is characterized in that
Along the length direction of the battery core unit (2), the battery core unit (2) and the shell (1) are interference fit；And/or
The pressing force is 50Kgf to 450Kgf.
7. a kind of for assembling the assembly tooling of battery modules described in any one of -6 according to claim 1, which is characterized in that
The assembly tooling (4) includes connecting rod (41), the first clamping plate (42) being fixedly installed at one end of the connecting rod (41)
The second clamping plate (43) being movably installed at the other end of the connecting rod (41), the second clamping plate (43) being capable of edge
The length direction of the connecting rod (41) is mobile the battery core unit (2) is clamped in the first clamping plate (42) and described the
Between second splint (43).
8. assembly tooling according to claim 7, which is characterized in that the first clamping plate (42) includes and the battery core list
First clamping leg (421) of the first mating groove (221) cooperation of first clamping end plate (22) of first (2), the second clamping plate
It (43) include being clamped with the second of the second mating groove (231) cooperation of the second clamping end plate (23) of the battery core unit (2)
Leg (431), wherein the thickness of first clamping leg (421) is less than or equal to the depth of first mating groove (221),
The thickness of second clamping leg (431) is less than or equal to the depth of second mating groove (231).
9. assembly tooling according to claim 8, which is characterized in that
First clamping leg (421) is formed with and the first clamping groove (222) cooperation of first clamping end plate (22)
First is clamped raised (422), and second clamping leg (431) is formed with recessed with the second clamping of second clamping end plate (23)
The second of slot (232) cooperation is clamped raised (432), wherein along the width direction of the battery core unit (2), first clamping
The difference of the width of leg (421) and the width of first mating groove (221) is greater than the described first ruler for being clamped raised (422)
Very little, the difference of the width of the width and second mating groove (231) of second clamping leg (431) is greater than second clamping
The size of raised (432)；And/or
The clamping force that the first clamping plate (42) and the second clamping plate (43) Xiang Suoshu battery core unit (2) apply is greater than the pressure
Clamp force.
10. a kind of vehicle, which is characterized in that the vehicle is provided with battery described in any one of -6 according to claim 1
Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492799.9U CN209592138U (en) | 2019-04-11 | 2019-04-11 | Battery modules, the assembly tooling for assembling the battery modules and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492799.9U CN209592138U (en) | 2019-04-11 | 2019-04-11 | Battery modules, the assembly tooling for assembling the battery modules and vehicle |
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| Publication Number | Publication Date |
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| CN209592138U true CN209592138U (en) | 2019-11-05 |
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ID=68345123
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| CN201920492799.9U Active CN209592138U (en) | 2019-04-11 | 2019-04-11 | Battery modules, the assembly tooling for assembling the battery modules and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179733A1 (en) * | 2020-03-13 | 2021-09-16 | 苏州清陶新能源科技有限公司 | Soft packing battery module and assembly method therefor |
| CN115823830A (en) * | 2021-10-12 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Heating device and heating method |
-
2019
- 2019-04-11 CN CN201920492799.9U patent/CN209592138U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179733A1 (en) * | 2020-03-13 | 2021-09-16 | 苏州清陶新能源科技有限公司 | Soft packing battery module and assembly method therefor |
| CN115823830A (en) * | 2021-10-12 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Heating device and heating method |
| CN115823830B (en) * | 2021-10-12 | 2024-04-09 | 宁德时代新能源科技股份有限公司 | Heating device and heating method |
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