Heater and electric automobile

By setting staggered flow ribs and multiple heating tubes in the heater, the fluid flow path is optimized and heat transfer is enhanced, solving the problems of uneven fluid heating and high cost in electric vehicles, achieving efficient and safe heating effects, and adapting to various working conditions.

CN223340411UActive Publication Date: 2025-09-16NINGBO SUNNY ELECTRICAL HEATING APPLIANCES CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422953611.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-09-16
Estimated Expiration
2034-12-02

AI Technical Summary

Technical Problem

Existing heaters in electric vehicles have problems such as uneven heating of the fluid in the flow channel, limited heating rate, complex manufacturing and high cost, which makes it difficult to meet the efficient, safe and reliable heating needs of electric vehicles in different environments and working conditions.

Method used

A heater is designed, including a flow channel rib unit and a heating cover in a heating cavity. The flow channel rib unit forms a staggered heating channel. Multiple heating tubes and temperature control units are set, and an anti-dry-burning thermostat is adopted to optimize the fluid flow path and improve the heat transfer efficiency, thereby enhancing the heating uniformity and system reliability.

Benefits of technology

It significantly improves the uniformity and efficiency of heating, ensures stable and reliable heating effects, reduces energy waste, adapts to the heating needs of different working conditions, and improves the overall heating performance and applicability of electric vehicles.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223340411U_ABST
    Figure CN223340411U_ABST
Patent Text Reader

Abstract

The utility model discloses a heater which comprises a heater main body, the heater main body comprises a heating cavity, a runner rib unit is arranged in the heating cavity, the runner rib unit is composed of a plurality of runner ribs, the runner ribs are staggered at intervals to form a plurality of heating channels, and the heating channels are communicated with the heating cavity. The plurality of heating runners are communicated to form a heating runner; the heating cover plate is arranged on the heating cavity, a plurality of fins are correspondingly arranged on the heating cover plate along the heating channel, and each fin is arranged in the heating channel in an extending manner; the heating unit is arranged at one end, opposite to the fins, of the heating cover plate; and the temperature control unit is arranged adjacent to the heating unit. According to the utility model, the structural design is reasonable, the heating uniformity and efficiency are obviously improved by arranging the heating channel formed by the plurality of runner ribs in a staggered manner at intervals, and a guarantee is provided for normal running of an automobile in winter.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of heating equipment, in particular to a heater and an electric car. Background Art

[0002] Currently, China strongly supports the development of electric vehicles, and new energy electric vehicles are becoming increasingly popular. However, in low ambient temperatures, new energy electric vehicles mainly use PTC heaters to preheat batteries. However, because the thermal power and heating rate of existing heaters are significantly affected by the flow path, the fluid in the flow path is heated unevenly, significantly reducing the vehicle's range.

[0003] Furthermore, existing PTC heaters have complex manufacturing processes, high costs, and limited material options, making them incapable of meeting diverse application requirements. In the electric vehicle sector, heater requirements are even more stringent, requiring not only small size and light weight but also high efficiency, energy saving, safety, and reliability. However, existing heaters often struggle to fully meet these high standards when used in electric vehicles, limiting their performance in diverse environments and operating conditions. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a heater and an electric vehicle in view of the current status of the existing technology.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a heater, including a heater main body, the heater main body including: a heating cavity, a flow rib unit is arranged in the heating cavity, the flow rib unit is composed of a plurality of flow ribs, a plurality of the flow ribs are staggered to form a plurality of heating channels, and a plurality of the heating channels are connected to form a heating flow channel; a heating cover plate, the heating cover plate is arranged on the heating cavity, the heating cover plate is provided with a plurality of fins corresponding to the heating channel, and each of the fins is extended in the heating channel; a heating unit, the heating unit is arranged at the end of the heating cover plate opposite to the fin; a temperature control unit, the temperature control unit is arranged adjacent to the heating unit.

[0006] The effect achieved by the above components is: by setting up a heating channel formed by a number of staggered flow ribs, the flow path of the fluid in the heating cavity is optimized, the contact time and area between the fluid and the heating surface are increased, so that heat can be more fully transferred to the fluid, significantly improving the uniformity and efficiency of heating, and ensuring that the heating effect of the entire system is more stable and reliable.

[0007] Preferably, the heating unit is composed of a plurality of heating elements, and the heating elements include a plurality of first heating tubes and second heating tubes. The first heating tubes are arranged on the heating cover plate, and the heating cover plate is provided with at least one first heating tube arranged along the corresponding fins.

[0008] The above components achieve the following: by installing a first heating tube on the heating cover, and ensuring that at least one heating tube is installed along the fins of the heating cover, every area on the heating cover is directly and adequately supplied with heat, avoiding the occurrence of insufficient local heating. This not only effectively improves heating uniformity, but also ensures that if a single heating tube fails, the remaining heating tubes can continue to operate, ensuring stable operation of the system, greatly improving the overall heating effect and system reliability.

[0009] Preferably, the temperature control unit includes a mounting plate and an anti-dry-burning thermostat arranged on the mounting plate; the mounting plate is arranged on the heating element and connected to the heating element; at least one anti-dry-burning thermostat is arranged on the mounting plate.

[0010] The aforementioned components achieve the following: By installing a temperature control unit consisting of a mounting plate and an anti-dry-boil thermostat, with the mounting plate tightly attached to and connected to the heating tube, the anti-dry-boil thermostat can accurately and in real time sense temperature changes on the heating tube. If the temperature rises abnormally or a dry-boil condition occurs, the anti-dry-boil thermostat shuts off the power supply, effectively preventing dangerous accidents and ensuring safety during use.

[0011] Preferably, the heating cavity is provided with a water inlet joint and a water outlet joint, and the water inlet joint and the water outlet joint are arranged remotely from each other and communicated with the heating flow channel.

[0012] The above components achieve the following effects: by providing water inlet and outlet connectors on the heating chamber and connecting them to the heating channel, and by arranging the inlet and outlet connectors relatively far apart, sufficient flow time and space are created for the fluid in the heating channel, allowing it to fully absorb heat and achieve efficient heat exchange. This minimizes heat loss, significantly improves energy utilization efficiency, and reduces energy waste.

[0013] Preferably, the second heating tube is arranged at any position on the outer surface of the heating cavity, and there is at least one second heating tube.

[0014] The above components achieve the following: by placing at least one second heating tube on the outer surface of the heating chamber, the distribution range of the heating source is further expanded. Under high-power conditions, the second heating tube can quickly replenish heat, significantly improving the overall heating power and efficiency. The coordinated operation of multiple heating tubes enables the system to flexibly adjust the heating power according to actual operating conditions, adapting to different ambient temperatures and usage requirements. This significantly improves the adaptability and flexibility of the heater to fluid heating, meeting the heating requirements of various complex working conditions.

[0015] Preferably, both ends of the first heating tube and the second heating tube are provided with wiring joints, and the wiring joints are provided with wiring pieces.

[0016] The above components achieve the following: by providing terminal connectors and lugs at both ends of the first and second heating tubes, a convenient, stable, and reliable electrical connection is established between the heating tubes and the power source. The design of the terminal connectors and lugs effectively reduces contact resistance, significantly improving the efficiency of power transmission and ensuring a stable and sufficient power supply to the heating tubes.

[0017] Preferably, the fins are evenly or unevenly distributed along the heating flow channel.

[0018] The above components achieve this by arranging the fins evenly or unevenly along the heating channel, allowing for flexible adjustment based on specific heating requirements and fluid flow characteristics. Evenly distributed fins provide relatively stable heat exchange throughout the entire heating channel; uneven distribution allows for optimization of localized heating priorities or challenges, improving heating efficiency in specific areas. This flexible distribution significantly enhances the heater's adaptability to diverse operating conditions and requirements.

[0019] Preferably, the fins include but are not limited to one of straight fins, louver fins, serrated fins, porous fins and corrugated fins.

[0020] The above components achieve the following effect: by enabling the fins to include, but not be limited to, straight fins, louvered fins, serrated fins, porous fins, and corrugated fins, a wide range of options is provided for heater design. Different types of fins have their own unique heat exchange and fluid flow characteristics. For example, straight fins offer a simple structure and low cost; louvered fins can enhance fluid turbulence and improve heat transfer efficiency; serrated and corrugated fins can increase the surface area of ​​the fins, further enhancing the heat exchange effect; and porous fins facilitate uniform fluid distribution and heat transfer. A diverse selection of fin types can meet different heating performance requirements, improving the overall performance and applicability of the heater.

[0021] Preferably, an electric vehicle comprises a heater as described above.

[0022] The aforementioned components achieve the following: By applying this heater to electric vehicles, it significantly improves the heating performance of the fluid inside the vehicle in cold weather or other operating conditions requiring heating. This allows for a quick and efficient warming and comfortable environment within the vehicle. Furthermore, this efficient heating performance effectively reduces energy consumption.

[0023] Preferably, the electric vehicle is an electric vehicle, a fuel cell electric vehicle, or a hybrid electric vehicle.

[0024] The above components achieve the following effects: the heater is applicable to various types of electric vehicles, including electric vehicles, fuel cell electric vehicles, and hybrid electric vehicles, thereby effectively expanding its application range and improving the overall heating performance and application range of the vehicle.

[0025] Compared with the existing technology, the advantages of the present invention are: by setting a heating channel formed by a number of staggered flow channel ribs, the flow path of the fluid in the heating cavity is optimized, the contact time and area between the fluid and the heating surface are increased, and heat can be more fully transferred to the fluid, which significantly improves the uniformity and efficiency of heating, ensures a more stable and reliable heating effect, prevents the battery of the car from being unable to start due to cold weather, and provides protection for the normal driving of the car in winter; the heater is applied to a variety of electric vehicles, thereby improving the overall heating performance and applicability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structural cross section of the utility model;

[0027] Figure 2 It is a schematic diagram of the structural cross section of the utility model;

[0028] Figure 3 It is a structural diagram of the utility model;

[0029] Figure 4 This is a schematic structural diagram of the heating cavity of the present invention;

[0030] Figure 5 This is a structural diagram of the heating cover plate of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the heating cover plate of the present utility model.

[0032] Figure numerals: 1. Heater body; 2. Heating cavity; 3. Flow channel rib unit; 4. Flow channel rib; 5. Heating channel; 6. Heating flow channel; 7. Heating cover; 8. Fin; 9. Heating unit; 10. Temperature control unit; 11. Heating element; 12. First heating tube; 13. Mounting plate; 14. Anti-dry-burning thermostat; 15. Water inlet connector; 16. Water outlet connector; 17. Second heating tube; 18. Wiring connector; 19. Wiring piece. DETAILED DESCRIPTION

[0033] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0034] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back... are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] Moreover, some of the above-mentioned terms may be used to express other meanings in addition to indicating orientation or positional relationships. For example, the term "on" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For ordinary technicians in this field, the specific meanings of these terms in this utility model can be understood according to the specific circumstances.

[0036] Furthermore, the terms "installed," "disposed," "equipped with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal connections between two devices, elements, or components. The connection methods discussed herein are prior art and are common knowledge to those skilled in the art without modification. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0037] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] In this embodiment 1,

[0039] like Figures 1 to 6 As shown, the utility model provides a heater, including a heater body 1, and the heater body 1 includes: a heating cavity 2, a flow rib unit 3 is arranged in the heating cavity 2, the flow rib unit 3 is composed of a plurality of flow ribs 4, and a plurality of the flow ribs 4 are staggered to form a plurality of heating channels 5, and a plurality of the heating channels 5 are connected to form a heating flow channel 6; a heating cover plate 7, the heating cover plate 7 is arranged on the heating cavity 2, and the heating cover plate 7 is provided with a plurality of fins 8 corresponding to the heating channels 5, and each of the fins 8 is extended and arranged in the heating channel 5; a heating unit 9, the heating unit 9 is arranged at the opposite end of the heating cover plate 7 and the fin 8; a temperature control unit 10, and the temperature control unit 10 is arranged adjacent to the heating unit 9.

[0040] By providing a heating channel 5 formed by a plurality of staggered flow channel ribs 4, the flow path of the fluid in the heating cavity 2 is optimized, the contact time and area between the fluid and the heating surface are increased, and heat can be more fully transferred to the fluid, which significantly improves the uniformity and efficiency of heating and ensures that the heating effect of the entire system is more stable and reliable.

[0041] The heating unit 9 is composed of a plurality of heating elements 11 , and the heating elements 11 include a plurality of first heating tubes 12 and second heating tubes 17 . The first heating tubes 12 are arranged on the heating cover 7 , and the heating cover 7 is provided with at least one first heating tube 12 correspondingly arranged along the fins 8 .

[0042] By providing first heating tubes 12 on the heating cover plate 7 and ensuring that at least one first heating tube 12 is provided along the fins 8, every area of ​​the heating cover plate 7 is directly and adequately supplied with heat, thus preventing the occurrence of insufficient local heating. This not only effectively improves heating uniformity, but also ensures that if a single heating tube fails, the remaining heating tubes can continue to operate, ensuring stable operation of the system and significantly enhancing the overall heating effect and system reliability.

[0043] The temperature control unit 10 includes a mounting plate 13 and an anti-dry-burning thermostat 14 provided on the mounting plate 13 ; the mounting plate 13 is arranged on the heating element 11 and connected to the heating element 11 ; at least one anti-dry-burning thermostat 14 is provided on the mounting plate 13 .

[0044] By providing a temperature control unit 10 comprising a mounting plate 13 and a dry-boil prevention thermostat 14, with the mounting plate 13 tightly positioned and connected to the heating tube, the system accurately and in real time senses the temperature changes of the heating tube. If the temperature rises abnormally or a dry-boil condition occurs, the dry-boil prevention thermostat 14 shuts off the power supply, effectively preventing dangerous accidents and ensuring safety during use.

[0045] The heating chamber 2 is provided with a water inlet joint 15 and a water outlet joint 16 , which are arranged remotely from each other and communicated with the heating flow channel 6 .

[0046] By providing a water inlet connector 15 and a water outlet connector 16 on the heating chamber 2 and connecting them to the heating channel 6, and by arranging the water inlet connector 15 and the water outlet connector 16 at a relatively long distance, sufficient flow time and space are created for the fluid in the heating channel 6, allowing it to fully absorb heat and achieve efficient heat exchange. This minimizes heat loss, significantly improves energy utilization efficiency, and reduces energy waste.

[0047] The second heating tube 17 is arranged at any position on the outer surface of the heating cavity 2 , and there is at least one second heating tube 17 .

[0048] By installing at least one second heating tube 17 on the outer surface of the heating chamber 2, the distribution range of the heating source is further expanded. Under high-power demand conditions, the second heating tube 17 can quickly replenish heat, significantly improving overall heating power and efficiency. The coordinated operation of multiple heating tubes enables the system to flexibly adjust heating power based on actual operating conditions, adapting to varying ambient temperatures and usage requirements. This significantly improves the heater's adaptability and flexibility in fluid heating, meeting heating requirements under a variety of complex operating conditions.

[0049] Both ends of the first heating tube 12 and the second heating tube 17 are provided with connection joints 18 , and connection pieces 19 are provided on the connection joints 18 .

[0050] By providing terminal connectors 18 and terminal lugs 19 at both ends of the first heating tube 12 and the second heating tube 17, a convenient, stable, and reliable electrical connection is established between the heating tubes and the power supply. The design of terminal connectors 18 and terminal lugs 19 effectively reduces contact resistance, significantly improving the efficiency of power transmission and ensuring a stable and sufficient power supply to the heating tubes.

[0051] The fins 8 are evenly or unevenly distributed along the heating channel 6 .

[0052] By distributing the fins 8 evenly or unevenly along the heating channel 6, the heater can be flexibly adjusted to meet specific heating requirements and fluid flow characteristics. Evenly distributed fins 8 provide relatively stable heat exchange throughout the heating channel 6; uneven distribution allows for optimization of local heating priorities or challenges, improving heating efficiency in specific areas. This flexible distribution significantly enhances the heater's adaptability to diverse operating conditions and usage requirements.

[0053] The fins 8 include but are not limited to one of straight fins 8 , louver fins 8 , serrated fins 8 , porous fins 8 and corrugated fins 8 .

[0054] By making the fins 8 include but not limited to straight fins 8, louvered fins 8, serrated fins 8, porous fins 8, and corrugated fins 8, a wide range of options is provided for the design of the heater. Different types of fins 8 have their own unique heat exchange characteristics and fluid flow characteristics. For example, straight fins 8 have a simple structure and low cost; louvered fins 8 can enhance fluid disturbance and improve heat exchange efficiency; serrated fins 8 and corrugated fins 8 can increase the surface area of ​​fins 8, further improving the heat exchange effect; and porous fins 8 help to evenly distribute the fluid and transfer heat. The diverse selection of fin 8 types can meet different heating performance requirements and improve the overall performance and applicability of the heater.

[0055] An electric vehicle comprises the heater as described above.

[0056] By applying this heater to electric vehicles, the heating performance of the fluid inside the vehicle is greatly improved in cold weather or other operating conditions requiring heating. It can quickly and efficiently provide a warm and comfortable environment inside the vehicle in a short period of time. At the same time, the efficient heating performance effectively reduces energy consumption.

[0057] The electric vehicles include electric vehicles, fuel cell electric vehicles and hybrid vehicles.

[0058] By making this heater suitable for multiple types of electric vehicles such as electric vehicles, fuel cell electric vehicles and hybrid vehicles, its application range is effectively expanded, thereby improving the overall heating performance and applicability of the vehicle.

[0059] like Figures 1 to 6 As shown, a heating channel 5 and a corresponding heating cover plate 7 with fins 8 are formed by arranging spaced and staggered flow channel ribs 4, thereby achieving uniform and efficient heating; sufficient heating power is guaranteed by arranging a first heating tube 12 on the heating cover plate 7 and a second heating tube 17 on the outer surface of the cavity; precise temperature control and dry burning prevention are performed by arranging adjacent temperature control units 10, thereby ensuring safe use; heat exchange is optimized by arranging a water inlet joint 15 and a water outlet joint 16 that are arranged far apart and connected to the heating flow channel 6 on the heating cavity 2; stable power supply is guaranteed by arranging wiring joints 18 and wiring pieces 19 at both ends of the heating tube; different heating requirements are met by distributing the fins 8 evenly or unevenly along the direction of the heating flow channel 6 and adopting a variety of types; and the heater is applied to a variety of electric vehicles, thereby improving the overall heating performance and applicability of the vehicle.

[0060] In this embodiment 2,

[0061] The fluid enters the heating channel 6 of the heating cavity 2 through the water inlet joint 15. The heating channel 6 is composed of spaced and staggered channel ribs 4, which increase the flow path of the fluid in the channel and fully contact the heating surface.

[0062] The heating cover plate 7 plays a heating role, the first heating tube 12 on the heating cover plate 7 provides heat, and the second heating tube 17 on the outer surface of the heating cavity 2 further supplements the heating.

[0063] During the heating process, the anti-dry-heat thermostat 14 monitors the temperature in real time. When the temperature is abnormal, the anti-dry-heat thermostat 14 on the mounting plate 13 takes effect to ensure safety.

[0064] The fins 8 at one end of the heating cover 7 further enhance heat transfer. The fins 8 are evenly or unevenly distributed along the heating flow channel 6, and different types of fins 8 (such as straight fins 8, louver fins 8, etc.) can adapt to different heating requirements and improve heating efficiency.

[0065] The fully heated fluid eventually flows out of the water outlet connector 16, providing the required heat energy for the electric vehicle. The thermostat plays a role in ensuring safety.

[0066] The fins 8 at one end of the heating cover 7 further enhance heat transfer. The fins 8 are evenly or unevenly distributed along the heating flow channel 6, and different types of fins 8 (such as straight fins and louvered fins) can adapt to different heating requirements and improve heating efficiency.

[0067] The fully heated fluid eventually flows out from the water outlet connector 16 , providing the required thermal energy for the electric vehicle.

[0068] In the description of this specification, reference is made to the terms "one embodiment", "some embodiments", "examples", "specific examples", etc.

[0069] Descriptions such as "example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0070] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, and bonding in the existing technology, which will not be described in detail here.

[0071] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, various changes and variations can be made in the specific implementation methods and application scope based on the concept of the present invention. The content of this specification should not be understood as a limitation of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A heater, characterized in that: A heater body is included, the heater body comprising: A heating cavity is provided with a flow channel rib unit, the flow channel rib unit is composed of a plurality of flow channel ribs, a plurality of the flow channel ribs are staggered to form a plurality of heating channels, and a plurality of the heating channels are connected to form a heating flow channel; A heating cover plate, the heating cover plate is arranged on the heating cavity, the heating cover plate is provided with a plurality of fins corresponding to the heating channel, and each of the fins is extended and arranged in the heating channel; A heating unit, the heating unit being arranged at an end of the heating cover plate opposite to the fins; A temperature control unit is arranged adjacent to the heating unit.

2. A heater according to claim 1, characterized in that: The heating unit is composed of a plurality of heating elements, and the heating elements include a plurality of first heating tubes and second heating tubes. The first heating tubes are arranged on the heating cover plate, and the heating cover plate is provided with at least one first heating tube arranged along the corresponding fins.

3. A heater according to claim 2, characterized in that: The temperature control unit includes a mounting plate and an anti-dry-burning thermostat arranged on the mounting plate; the mounting plate is arranged on the heating element and connected to the heating element; at least one anti-dry-burning thermostat is arranged on the mounting plate.

4. A heater according to claim 3, characterized in that: The heating cavity is provided with a water inlet joint and a water outlet joint, and the water inlet joint and the water outlet joint are arranged remotely and communicated with the heating flow channel.

5. A heater according to claim 4, characterized in that: The second heating tube is arranged at any position on the outer surface of the heating cavity, and there is at least one second heating tube.

6. A heater according to claim 5, characterized in that: Both ends of the first heating tube and the second heating tube are provided with connection joints, and the connection joints are provided with connection pieces.

7. A heater according to claim 6, characterized in that: The fins are evenly or unevenly distributed along the heating flow channel.

8. A heater according to claim 7, characterized in that: The fins include but are not limited to one of straight fins, louver fins, serrated fins, porous fins and corrugated fins.

9. An electric vehicle, characterized in that: A heater comprising a heater as claimed in any one of claims 1 to 8.

10. The electric vehicle according to claim 9, characterized in that: The electric vehicles include electric vehicles, fuel cell electric vehicles and hybrid vehicles.