PTC heater and vehicle

Abstract

The utility model relates to a PTC heater and a vehicle, the PTC heater comprises a heating assembly and a fuse, and the heating assembly comprises a first heating main body and a second heating main body; the fuse is connected with the heating assembly in series, and the fuse is located between the first heating main body and the second heating main body. The fuse is connected with the heating assembly in series, and the fuse can monitor the temperature of the first heating body and the temperature of the second heating body at the same time. The fuse is located between the first heating main body and the second heating main body, and the fuse is uniformly heated by the first heating main body and the second heating main body, so that the fuse can be accurately fused when reaching a preset temperature threshold value, a circuit can be more reliably cut off under the condition of abnormal current or overload, and the safety of the circuit is improved. Inaccuracy of fusing caused by local overheating or uneven heating is avoided, stability and continuity of circuit operation are improved, and therefore the PTC heater can be better protected.

Description

Technical Field

[0001] This application relates to the technical field of heaters, and particularly to a PTC heater and a vehicle. Background Art

[0002] In related technologies, in a dual-temperature zone PTC heater, a fuse is usually arranged outside the heating component, specifically between the heating component and the frame. When the PTC heater is working, the temperature on the side of the fuse close to the heating component is higher, while the temperature on the side far from the heating component is lower, resulting in uneven heating on both sides of the fuse, which easily causes fuse failure and inability to blow at a preset temperature threshold, reducing the service life of the fuse. Summary of the Utility Model

[0003] Embodiments of this application provide a PTC heater and a vehicle to at least partially solve the above technical problems.

[0004] To achieve the above object, according to the first aspect of this application, a PTC heater is provided, including: a heating component, where the heating component includes a first heating body and a second heating body;

[0005] A fuse, connected in series with the heating component, and the fuse is located between the first heating body and the second heating body.

[0006] Optionally, the first heating body and the second heating body are arranged horizontally. The first heating body includes a top and a bottom arranged along the direction of gravity. The fuse is detachably connected to the side of the first heating body close to the second heating body and is located between the top and the bottom.

[0007] Optionally, the fuse includes a fuse body and a wire harness. The PTC heater further includes a first mounting member. The first mounting member is mounted on the side of the first heating body close to the second heating body, and the first mounting member is located on the side of the fuse body close to the top. The first mounting member is provided with a wire passing channel extending along the direction of gravity and penetrating through opposite ends of the first mounting member. The wire harness passes through the wire passing channel and is electrically connected to the heating component.

[0008] Optionally, the fuse further includes a housing and a fastener. The fuse body is mounted in the housing. Horizontally, the housing is provided with a first through hole. The fastener passes through the first through hole and is connected to the first heating body to fasten the fuse to the first heating body.

[0009] Optionally, in the horizontal direction, one side of the first mounting member facing away from the first heating body is connected to the second heating body, and the surface of the housing facing away from the first heating body is adjacent to or spaced from the second heating body.

[0010] Optionally, the PTC heater further includes a second mounting member, which is mounted on one side of the first heating body close to the second heating body. The first mounting member, the second mounting member, and the first heating body form a mounting groove, and the fuse body is mounted in the mounting groove.

[0011] Optionally, in the horizontal direction, one side of the second mounting member facing away from the first heating body is connected to the second heating body.

[0012] Optionally, the PTC heater further includes a first pole piece. The fuse is electrically connected to the first pole piece. The first pole piece includes a first portion extending in the direction of the first heating body and a second portion extending in the direction of the second heating body. The first portion is electrically connected to the first heating body, and the second portion is electrically connected to the second heating body.

[0013] Optionally, the PTC heater further includes a temperature sensor for sensing the temperature of the heating assembly. In the second direction, the heating assembly includes a first side surface and a second side surface arranged oppositely, and the temperature sensor is mounted on one of the first side surface and the second side surface.

[0014] According to a second aspect of the present application, there is also provided a vehicle including the PTC heater as described above.

[0015] In the PTC heater according to the embodiment of the present application, the fuse is connected in series with the heating assembly. The fuse can monitor the temperatures of the first heating body and the second heating body simultaneously. When the temperature runaway of one or more of the first heating body and the second heating body exceeds the protection upper limit, the fuse melts, the heating assembly is powered off and stops working. The fuse is located between the first heating body and the second heating body, and the first heating body and the second heating body heat the fuse evenly, so that the fuse can accurately melt when reaching the preset temperature threshold, can more reliably cut off the circuit in case of abnormal current or overload, avoid inaccurate melting caused by local overheating or uneven heating, improve the stability and continuity of the circuit operation, and thus can better protect the PTC heater. Moreover, it also helps to maintain the performance stability of the fuse under different working conditions, reduce premature damage caused by thermal unevenness, and extend the service life of the fuse. In addition, it also reduces the space requirement between the two side frames of the first heating body and the second heating body, making the integrity between the first heating body and the second heating body and the frame better and the connection more stable.

[0016] Other features and advantages of the present application will be described in detail in the following detailed implementation section. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] In order to more fully understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals in the following description represent the same parts.

[0019] Figure 1 is a schematic diagram of the overall structure of the PTC heater provided in the exemplary embodiment of the present disclosure;

[0020] Figure 2 is Figure 1 an exploded view of a partial structure of the PTC heater in;

[0021] Figure 3 is Figure 1 a schematic diagram of the structure of the fuse in;

[0022] Figure 4 is Figure 1 a schematic diagram of a partial structure of the PTC heater in;

[0023] Figure 5 is Figure 1 a schematic diagram of the structure of the heat dissipation fins of the PTC heater in;

[0024] Figure 6 is Figure 1 an exploded view of a partial structure of the first heating body in;

[0025] Figure 7 is Figure 1 a schematic diagram of a partial structure of the controller without a PCB board in;

[0026] Figure 8 is Figure 1 a schematic diagram of a partial structure of the controller including a PCB board in.

[0027] Description of the Reference Numerals:

[0028] 10, frame;

[0029] 30. Fuse; 31. Fuse body; 311. First wire harness; 313. Second wire harness; 33. Housing; 330. First through hole; 35. Fastener;

[0030] 21. First temperature sensor; 23. Second temperature sensor;

[0031] 40. Controller; 41. Electric control electrode plastic part; 43. PCB board;

[0032] 50. Heating component; 503. Second side; 51. First heating body; 511. Top; 513. Bottom; 53. Second heating body; 56. Heat dissipation fin; 5101. Aluminum tube; 5103. Pi film; 5105. Ceramic substrate; 5107. Electrode plate; 5109. PTC chip;

[0033] 71. First mounting part; 72. Mounting groove; 73. Second mounting part; 75. First pole piece; 751. First part; 753. Second part; 76. Second pole piece. Detailed implementation manner

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0035] The PTC heater is also called a PTC heating element. The PTC heater is a heating element that generates heat by energizing a PTC thermistor ceramic element. It has the advantages of small thermal resistance and high heat exchange efficiency. It is an automatically constant-temperature and power-saving electric heater. Its outstanding feature lies in its safety performance, and it is not easy to cause safety hazards such as scalding and fire.

[0036] As Figure 1 and Figure 2 shown, the PTC heater includes a frame 10, a fuse 30, and a heating component 50. The frame 10 forms an installation space, and both the fuse 30 and the heating component 50 are installed in the installation space. The fuse 30 is connected in series with the heating component 50. When the temperature of the heating component 50 is higher than the fusing temperature of the fuse 30, the fuse 30 fuses, so that the heating component 50 is forced to cut off power and stop working, thereby improving the safety of the operating environment.

[0037] A fuse is a disposable temperature-sensitive circuit-breaking device that can sense the overheating caused by current overload in electronic devices. When the temperature rises to the melting point of the fuse wire in the fuse, the fuse melts, thus disconnecting the circuit, preventing the internal parts of the device from being damaged due to excessive temperature, protecting the safe operation of the circuit, and avoiding the occurrence of fires.

[0038] In some embodiments, the positive electrode of the fuse can be electrically connected to the positive electrode of the power supply, and the negative electrode of the fuse, the positive electrode of the heating component, the negative electrode of the heating component, and the negative electrode of the power supply are electrically connected in sequence. The PTC heater further includes a temperature sensor and a controller, and the temperature sensor and the controller are installed in the installation space.

[0039] The controller 40 and the temperature sensor are respectively electrically connected to the heating component 50, the controller 40 is electrically connected to the temperature sensor, the fuse 30 is electrically connected to the heating component 50, the controller 40 is electrically connected to the heating component 50, and the fuse 30 is also electrically connected to the controller 40. The temperature sensor is used to sense the temperature of the heating component and send a signal to the controller. After receiving the signal from the temperature sensor, when the temperature exceeds the threshold, the controller will control the heating component to stop heating. Specifically, the controller can be electrically connected to the heating component through a wire harness, the fuse can be electrically connected to the heating component through a wire harness, and the fuse can be electrically connected to the controller through a wire harness.

[0040] In the related art, in a PTC heater with two temperature zones, the fuse is usually arranged outside the heating component, specifically between the heating component and the frame. When the PTC heater works, the temperature on the side of the fuse close to the heating component is higher, while the temperature on the side far from the heating component is lower, resulting in uneven heating on both sides of the fuse, which easily leads to fuse failure, unable to melt at the preset temperature threshold, and reducing the service life of the fuse.

[0041] Please refer to Figure 2 , in the embodiments of the present application, the heating component 50 may include a first heating body 51 and a second heating body 53, and the fuse 30 is located between the first heating body 51 and the second heating body 53. Among them, the first heating body and the second heating body may be arranged along the gravity direction, and the first heating body 51 and the second heating body 53 may also be arranged along the horizontal direction. The first heating body 51 and the second heating body 53 can be respectively controlled by the controller 40 to generate heat.

[0042] In some embodiments, the first heating body and the second heating body of the PTC heater may be arranged along the gravity direction, thus dividing the PTC heater into upper and lower temperature zones, and the fuse is arranged between the first heating body and the second heating body.

[0043] Please refer to Figure 2 , Figure 4, in some embodiments, the first heating body and the second heating body of the PTC heater may be arranged horizontally, thereby dividing the PTC heater into two left and right temperature zones, and the fuse 30 is disposed between the first heating body 51 and the second heating body 53.

[0044] In the embodiments of the present application, the fuse 30 can monitor the temperatures of the first heating body 51 and the second heating body 53 simultaneously. When the temperature of one or more of the first heating body 51 and the second heating body 53 gets out of control and the temperature rise exceeds the protection upper limit, the fuse 30 melts, and one or more of the first heating body 51 and the second heating body 53 are powered off and stop working.

[0045] In this way, heating bodies are provided on both sides of the fuse 30, and the first heating body 51 and the second heating body 53 make the fuse 30 uniformly heated. As a result, the fuse 30 can accurately melt when reaching the preset temperature threshold, and can more reliably cut off the circuit in case of abnormal current or overload, avoiding inaccurate melting caused by local overheating or uneven heating, improving the stability and continuity of the circuit operation, and thus being able to better protect the PTC heater. Moreover, it can also help to maintain the stability of the performance of the fuse under different working conditions, reduce premature damage caused by thermal non-uniformity, and extend the service life of the fuse. In addition, it also reduces the space requirement between the two side frames of the first heating body 51 and the second heating body 53, making the integrity between the first heating body 51 and the second heating body and the frame better and the connection more stable.

[0046] In some embodiments, there may be a certain gap between the frame 10 and the heating assembly 50. Glue can be injected into the gap. By using the glue provided between the frame 10 and the heating assembly 50, while the heating core can be fixed, the waterproof level of the entire PTC heater can be improved.

[0047] In some embodiments, the first heating body 51 may include a metal tube, an insulating layer, an electrode sheet, and a PTC sheet arranged in sequence from outside to inside. Among them, the PTC sheet is mainly used for heating. When high-voltage electricity is applied to the PTC sheet, the PTC sheet will start to heat. The metal tube is used to conduct out the heat generated by the PTC sheet. The material of the metal tube can be selected from materials such as copper, stainless steel, and aluminum. The material of the electrode sheet can be selected from materials such as copper, stainless steel, and aluminum. The first heating body may further include a ceramic substrate disposed between the insulating layer and the electrode sheet. The ceramic substrate is used to cooperate with the PTC sheet for insulating heat conduction and facilitating the adjustment of the power of the heater.

[0048] In some embodiments, the metal tube can be an aluminum tube, and the insulating layer can be a PI film. Here, the full name of the PI film is: Polyimide Film, which is a film-type insulating material formed by polycondensation of pyromellitic dianhydride (PMDA) and diaminodiphenyl ether (ODA) in a strongly polar solvent, followed by casting into a film and then imidization.

[0049] Please refer to Figure 6 , in some embodiments, the first heating body 51 can include a plurality of heating elements, a total positive electrode plate, and a total negative electrode plate. Each heating element can include an aluminum tube 5101, a PI film 5103, a ceramic substrate 5105, an electrode plate 5107, and a PTC sheet 5109 arranged in sequence from outside to inside. The electrode plate includes a positive electrode plate and a negative electrode plate. The positive electrode plates of the plurality of heating elements are respectively connected to the total positive electrode plate to form the positive electrode of the first heating body. The negative electrode plates of the plurality of heating elements are respectively connected to the total negative electrode plate to form the negative electrode of the first heating body.

[0050] The specific structure of the second heating body can refer to the first heating body. The second heating body can include a plurality of heating elements. Each heating element can include an aluminum tube, a PI film, a ceramic substrate, an electrode plate, and a PTC sheet arranged in sequence from outside to inside. The electrode plate includes a positive electrode plate and a negative electrode plate. The positive electrode plates of the plurality of heating elements are respectively connected to the total positive electrode plate to form the positive electrode of the second heating body. The negative electrode plates of the plurality of heating elements are respectively connected to the total negative electrode plate to form the negative electrode of the second heating body.

[0051] The first heating body can be connected to the plastic-encased part electrode through the negative electrode plate of the first heating body, and the second heating body can be connected to the plastic-encased part electrode through the negative electrode plate of the second heating body. Among them, the connection between the negative electrode plate of the first heating body and the plastic-encased part electrode is by welding, and the connection between the negative electrode plate of the second heating body and the plastic-encased part electrode is by welding.

[0052] In these embodiments, the PTC sheet is mainly used for heating. When high-voltage electricity is applied to the PTC sheet, the PTC sheet will start to heat. The aluminum tube is used to conduct out the heat generated by the PTC sheet. The ceramic substrate is used for insulation and heat conduction. During processing, the PTC sheet, the electrode plate, the ceramic substrate, and the PI film can be wrapped layer by layer and placed inside the aluminum tube to form the first heating body. When high-voltage electricity is applied to the electrode plate, the PTC sheet located inside will start to heat, and the heat will be dissipated through the heating aluminum tube.

[0053] The heating assembly includes a first heating body 51. The heating assembly may further include a first heat exchanger, which is disposed on the side of the heating element of the first heating body 51. The heating assembly may further include a second heat exchanger, which is disposed on the side of the heating element of the second heating body. The following takes the first heat exchanger and the first heating body as examples to illustrate their specific structures. The specific structure of the second heat exchanger and the second heating body may refer to the first heat exchanger and the first heating body.

[0054] Please refer to Figure 5 , the first heat exchanger may include heat dissipation fins 56. In some embodiments, the heat dissipation fins may be in a corrugated structure, and air passes through the gaps between the corrugated fins to take away the heat of the heating element, so as to achieve the purpose of heating. The first heating body may include a plurality of heating cores, and a first heat exchanger is provided on each of the opposite sides of each heating core. Moreover, the first heat exchanger and the heating core may be bonded together by thermal conductive silicone, so that the heat generated during the operation of the heating core can be taken away by the first heat exchanger. Among them, there may be a plurality of heat dissipation fins, so that the heat dissipation area of the first heating body can be easily increased through the plurality of heat dissipation fins, and it is also beneficial to reduce the weight of the first heat exchanger.

[0055] The first heat exchanger may further include a corrugated heat dissipation aluminum strip, and the corrugated strip shape can increase the surface area of the first heat exchanger and improve the heat exchange efficiency of the first heat exchanger. The number of heating elements is multiple, and the number of the first heat exchangers is multiple. The multiple heating elements are arranged at intervals, and the first heating element is arranged between two adjacent first heat exchangers. The first heat exchanger is used to transfer the heat generated by the heating element to the outside; the shape of the first heat exchanger may be zigzag to increase the heat dissipation area and improve the heat dissipation effect.

[0056] The first heat exchanger and the heating element are alternately arranged and bonded to assemble the first heating body 51 and the second heating body 53. The PTC sheet located in the inner layer of the heating element will start to heat up, and the heat will be dissipated through the aluminum tube. Finally, it is dissipated into the air through the first heat exchanger to achieve the purpose of heating. The electrode sheet may include a positive electrode sheet and a negative electrode sheet.

[0057] In some embodiments, the first heating body 51 and the second heating body 53 are arranged horizontally, so that the PTC heater is divided into two temperature zones horizontally. The first heating body 51 includes a top 511 and a bottom 513 arranged along the gravity direction. It is easy to understand that the gravity direction is perpendicular to the horizontal direction. The fuse 30 is detachably connected to one side of the first heating body 51 close to the second heating body 53 and is located between the top 511 and the bottom 513.

[0058] In some embodiments, the first heating body 51 may be located on the right side of the second heating body 53.

[0059] In this way, it is convenient to arrange the PTC heater in the longitudinal direction of the vehicle, so that the first heating body and the second heating body can heat different positions distributed in the longitudinal direction of the vehicle in different ways, and the space utilization of the vehicle is more balanced.

[0060] The housing may include a first housing and a second housing. The first housing and the second housing may be screwed or snapped together. The first housing and the second housing enclose a first space and a second space arranged in the horizontal direction. The first heating body is located in the first space, and the second heating body is located in the second space. The material of the housing may be metal or ceramic. The housing is formed with an opening that at least partially exposes the first heating body and at least partially exposes the second heating body.

[0061] The second heating body includes a top and a bottom. The top of the second heating body is disposed close to the top of the first heating body 51, and the bottom of the second heating body is disposed close to the bottom of the first heating body 51. The negative electrode and the positive electrode of the first heating body may both be located at the top position of the first heating body 51, and the negative electrode and the positive electrode of the second heating body may both be located at the top position of the second heating body.

[0062] Please combine Figure 2 , the PTC heater further includes a first mounting member 71. The first mounting member 71 is mounted on one side of the first heating body 51 close to the second heating body 53. Relative to the fuse 30, the first mounting member 71 is closer to the top. The first mounting member 71 is provided with a wire passing channel extending in the direction of gravity and penetrating through opposite ends of the first mounting member 71. The wire harnesses led out from the positive electrode and the negative electrode of the fuse may be led out from the wire passing channel.

[0063] In some embodiments, the first mounting member 71 may be an aluminum tube, and the pipe of the aluminum tube is the wire passing channel, and the extending direction of the pipe is the direction of gravity.

[0064] The fuse 30 may include a fuse body 31 and a wire harness. The first mounting member 71 is mounted on one side of the first heating body 51 close to the second heating body 53, and the first mounting member 71 is located on the side of the fuse body 31 close to the top 511. The first mounting member 71 is provided with a wire passing channel extending in the direction of gravity and penetrating through opposite ends of the first mounting member 71. The wire harness passes through the wire passing channel and is electrically connected to the heating assembly 50.

[0065] In some embodiments, the fuse body may be provided with a positive electrode and a negative electrode of the fuse. The wire harness may include a first wire harness 311 and a second wire harness 313. The positive electrode of the fuse is connected to the first wire harness 311, and the negative electrode of the fuse is connected to the second wire harness 313. The first wire harness 311 passes through the wire passing channel and is electrically connected to the positive electrode of the power supply. In other words, the positive electrode of the fuse is connected to the positive electrode of the power supply through the first wire harness 311. The first wire harness 311 may be welded to the positive electrode of the fuse, and the second wire harness 313 may be welded to the negative electrode of the fuse.

[0066] In the embodiments of the present application, the fuse extends out the first wire harness 311 and the second wire harness 313, and the first heating body and the second heating body are connected in parallel.

[0067] The second wire harness 313 is connected to a first pole piece 75. The extending direction of the first pole piece 75 is the same as the arrangement direction of the first heating body and the second heating body, so that the second wire harness 313 extending out of the fuse can connect the first heating body 51 and the second heating body 53 through the first pole piece 75.

[0068] The second wire harness passes through the wire passing channel and is electrically connected to the positive electrode of the first heating body, and the second wire harness passes through the wire passing channel and is electrically connected to the positive electrode of the second heating body. In other words, the negative electrode of the fuse is connected to the positive electrode of the first heating body and the positive electrode of the second heating body through the second wire harness. In this way, the first heating body and the second heating body are in parallel, which is convenient for separately controlling the temperatures of the first heating body and the second heating body.

[0069] On the one hand, it can avoid overloading of the first heating body and the second heating body. On the other hand, it can realize separate control of the first heating body and the second heating body, so as to separately control the heating of the first heating body or the second heating body according to actual use requirements. For example, when the PTC heater is installed on a vehicle and used for heating the passenger compartment, the first heating body can be used for heating the main driver's cab, and the second heating body can be used for heating the co-driver's cab. Since the first heating body and the second heating body can be separately controlled, heating the main driver's cab or the co-driver's cab separately can be realized.

[0070] The fuse 30 further includes a housing 33 and a fastener 35. The material of the housing 33 may be ceramic, and its specific structure may be a ceramic tube structure. The housing 33 wraps the fuse body 31 inside, and wire harnesses extend out from both sides of the fuse body 31. The diameter of the wire harness can be set according to the actual working conditions.

[0071] Please refer to Figure 2 , Figure 3, the fuse body 31 is installed inside the housing 33. Horizontally, the housing 33 is provided with a first through hole 330. The fastener 35 passes through the first through hole 330 and is connected to the first heating body to fasten the fuse 30 to the first heating body 51. The fastener 35 can be a screw, and the first heating body 51 can be provided with a threaded hole, so that the fastener passes through the first through hole and is screwed to the first heating body to fasten the fuse 30 to the first heating body.

[0072] Please refer to Figure 4 , in some embodiments, horizontally, the side of the first mounting member 71 facing away from the first heating body 51 is used to connect to the second heating body 53, and the surface of the housing 33 facing away from the first heating body 51 is adjacent to or spaced from the second heating body 53. Specifically, the shortest distance between the side of the first mounting member 71 facing away from the first heating body 51 and the first heating body 51 is L1, and the shortest distance between the side of the housing 33 facing away from the first heating body 51 and the first heating body is L2, and L1 is greater than or equal to L2.

[0073] In these embodiments, horizontally, the first mounting member 71 protrudes more from the first heating body 51 relative to the housing 33 or the first mounting member 71 is flush with the housing 33. The first mounting member 71 is closer to the second heating body relative to the housing 33 or the distances between the first mounting member 71, the housing 33 and the second heating body are the same. In this way, it is convenient to connect the first mounting member 71 to the second heating body 53, thereby connecting the first heating body 51 to the second heating body 53. Among them, the connection between the first mounting member 71 and the second heating body 53 can be bonding.

[0074] In some embodiments, the PTC heater further includes a second mounting member 73. The second mounting member 73 is installed on the side of the first heating body 51 close to the second heating body 53. The first mounting member 71, the second mounting member 73 and the first heating body 51 form a mounting groove 72, and the fuse body is installed in the mounting groove 72.

[0075] By providing the installation groove 72, it is convenient to position and install the fuse 30, improving the installation efficiency. After the fuse 30 is installed, one end of the fuse 30 can abut against the end of the second mounting member 73, while the other end of the fuse 30 can lead out and be connected to the first wire harness 311 connected to the positive pole of the fuse and the second wire harness 313 connected to the negative pole of the fuse. Both the first wire harness 311 and the second wire harness 313 are led out from the first mounting member 71 through the wire passing channel. In some embodiments, the fuse is installed in the installation groove 72, and the fuse is connected to the side of the first heating body close to the second heating body 53, specifically, it can be screwed, riveted, bonded, etc. For example, a threaded hole can be provided on the side of the first heating body close to the second heating body 53. Understandably, the threaded hole is located at the bottom of the installation groove 72. The fuse is provided with a through hole. After the screw passes through the through hole of the fuse in sequence, it is screwed with the threaded hole at the bottom of the installation groove 72, thereby fastening the fuse to the second heating body 53.

[0076] In some embodiments, the second mounting member 73 can be provided with a wire passing channel extending in the direction of gravity. Specifically, the second mounting member 73 can be an aluminum tube, and the pipeline of the aluminum tube is the wire passing channel of the second mounting member 73, and the extending direction of the pipeline is the direction of gravity.

[0077] In some embodiments, along the horizontal direction, the side of the second mounting member facing away from the first heating body is connected to the second heating body 53. Further, along the horizontal direction, the shortest distance between the side of the second mounting member facing away from the first heating body and the first heating body is L3, L3 is greater than or equal to L2, and L3 is equal to L1.

[0078] In these embodiments, along the horizontal direction, the second mounting member protrudes more from the first heating body 51 than the outer shell 33 or the second mounting member is flush with the outer shell 33. The second mounting member is closer to the second heating body than the outer shell 33 or the distances between the second mounting member, the outer shell 33 and the second heating body are the same. In this way, it is convenient to connect the second mounting member to the second heating body, thereby connecting the first heating body 51 to the second heating body. Among them, the connection between the second mounting member and the second heating body can be adhesive bonding.

[0079] L3 is equal to L1. In this way, the protruding degree of the second mounting member relative to the outer shell 33 is the same as the protruding degree of the first mounting member relative to the outer shell 33, so that after the first mounting member, the second mounting member and the first heating body 51 are bonded, the connection between the first heating body 51 and the second heating body is more stable and beautiful.

[0080] Please combine Figure 3, in some embodiments, the PTC heater further includes a first pole piece 75. The negative electrode of the fuse is electrically connected to the first pole piece 75 through a second wire harness 313. The first pole piece 75 includes a first portion 751 extending toward the first heating body 51 and a second portion 753 extending toward the second heating body 53.

[0081] By connecting the first heating body 51 and the second heating body 53 through the first pole piece 75, the connection is convenient, the resistance is small, and the first pole piece 75 is not prone to generating heat.

[0082] In some embodiments, the negative electrode and the positive electrode of the first heating body 51 can both be located at the top position of the first heating body 51, and the negative electrode and the positive electrode of the second heating body 53 can both be located at the top position of the second heating body 53. The end of the second wire harness passing through the wire passing channel is connected with a first pole piece 75. The first pole piece 75 can be of a rectangular structure. The second wire harness is connected to the middle of the first pole piece 75. The portion of the first pole piece 75 close to the first heating body is the first portion 751, and the first portion 751 is electrically connected to the positive electrode of the first heating body. The portion of the first pole piece 75 close to the second heating body is the second portion 753, and the second portion 753 is electrically connected to the positive electrode of the second heating body. In this way, the first heating body and the second heating body are connected in parallel. The material of the first pole piece 75 can be copper.

[0083] In these embodiments, the negative electrode and the positive electrode of the first heating body are both located at the top position of the first heating body 51, and the negative electrode and the positive electrode of the second heating body are both located at the top position of the second heating body 53. The fuse 30 is located between the first heating body 51 and the second heating body 53. The second wire harness extends out from between the first heating body 51 and the second heating body 53 toward the top position close to the first heating body 51 and the top position close to the second heating body, and is respectively connected to the positive electrode of the first heating body 51 and the positive electrode of the second heating body through the first pole piece 75. Thus, the fuse 30 is not easily affected by the electrode positions and can be more easily connected to the first heating body 51 and the second heating body 53 on both sides.

[0084] The end of the first wire harness 311 passing through the wire passing channel can be connected with a second pole piece 76. The material of the second pole piece 76 can be copper. The end of the first wire harness extending from the fuse is connected with the second pole piece 76. The first wire harness extending from the positive electrode of the fuse is connected to the plastic-encapsulated electrode through the second pole piece 76, and through the plastic-encapsulated electrode, the fuse is connected to the positive electrode of the power supply. Among them, the plastic-encapsulated electrode can ensure good electrical conductivity while having better functions such as protection, insulation, and fixation through plastic encapsulation.

[0085] In some embodiments, the PTC heater further includes a temperature sensor for sensing the temperature of the heating component 50. Along the second direction, the heating component 50 includes a first side and a second side that are oppositely arranged, and the temperature sensor is mounted on one of the first side and the second side. By sensing the temperature of the heating component 50 with the temperature sensor, when the temperature is too high, the heating component 50 stops working, making it safer.

[0086] Please refer to Figure 1 , the PTC heater further includes a controller 40. The temperature sensor may include a first temperature sensor 21 and a second temperature sensor 23. The controller is electrically connected to the first heating body and the second heating body respectively. The first temperature sensor 21 is used to sense the temperature of the first heating body 51 and is electrically connected to the controller. The second temperature sensor is used to sense the temperature of the second heating body and is electrically connected to the controller. The controller is used to control the working states of the first heating body and the second heating body. The controller is mainly used to control the magnitude of the current passing through the first heating body and the second heating body, thereby controlling the heating temperature of the PTC heater.

[0087] By monitoring the temperatures of the first heating body 51 and the second heating body 53 through the first temperature sensor 21 and the second temperature sensor 23, when the temperature of the first heating body is higher than the threshold value, the controller controls the first heating body to start or stop working. When the temperature of the second heating body is higher than the threshold value, the controller controls the second heating body to start or stop working. The first side and the second side are the windward side and the leeward side respectively. Please refer to Figure 1 , the first temperature sensor may be arranged on the second side (leeward side) of the first heating body for directly measuring the temperature of the first heating body. The second temperature sensor may be arranged on the leeward side of the second heating body for directly measuring the temperature of the second heating body.

[0088] The first heating body and the second heating body are arranged horizontally. The top of the first heating body is close to the top of the second heating body. The controller may be arranged close to the top of the first heating body, specifically, part of it may be located at the top of the first heating body and part of it may be located at the top of the second heating body.

[0089] Please refer to Figure 7 and Figure 8 , specifically, the controller may include an electric control electrode plastic part 41 and a PCB board 43, and the PCB board 43 is connected to the electric control electrode plastic part 41.

[0090] The controller further includes a plastic part electrode. Among them, the negative electrode sheet of the first heating body, the plastic part electrode, and the PCB board are electrically connected in sequence.

[0091] The negative electrode sheet, the plastic-encapsulated electrode, and the PCB board of the second heating body are electrically connected in sequence. Thus, the operation of the first heating body and the second heating body is controlled through the PCB board.

[0092] According to a second aspect of the present disclosure, a vehicle is provided. The vehicle includes the above-mentioned PTC heater and has all the beneficial effects of the above-mentioned PTC heater, which will not be elaborated herein again.

[0093] The vehicle can be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present disclosure does not make specific limitations thereto. By the heat generation of the PTC heater, functions such as vehicle heating, defrosting, and defogging can be achieved.

[0094] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0095] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0096] Among the embodiments, embodiments, and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0097] The above are only preferred embodiments of the present application and do not impose any form of limitation on the present application. However, as long as it does not depart from the content of the technical solution of the present application, any equivalent changes and modifications made to the above embodiments based on the technical essence of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A PTC heater, characterized in that: include: A heating assembly, the heating assembly comprising a first heating body and a second heating body; A fuse is connected in series with the heating assembly, and the fuse is located between the first heating body and the second heating body.

2. The PTC heater according to claim 1, characterized in that: The first heating body and the second heating body are arranged in a horizontal direction, the first heating body includes a top and a bottom arranged in a gravity direction, and the fuse is detachably connected to a side of the first heating body close to the second heating body and is located between the top and the bottom.

3. The PTC heater according to claim 2, characterized in that: The fuse includes a fuse body and a wiring harness, and the PTC heater also includes a first mounting member, the first mounting member is mounted on a side of the first heating body close to the second heating body, and the first mounting member is located on a side of the fuse body close to the top, the first mounting member is provided with a wire passing channel extending in the direction of gravity and passing through opposite ends of the first mounting member, the wiring harness passes through the wire passing channel and is electrically connected to the heating component.

4. The PTC heater according to claim 3, characterized in that: The fuse also includes a shell and a fastener. The fuse body is installed in the shell. The shell is provided with a first through hole in the horizontal direction. The fastener is passed through the first through hole and connected to the first heating body to fasten the fuse to the first heating body.

5. The PTC heater according to claim 4, characterized in that: In the horizontal direction, a side of the first mounting member facing away from the first heating body is connected to the second heating body, and a surface of the housing facing away from the first heating body is adjacent to or spaced from the second heating body.

6. The PTC heater according to claim 5, characterized in that: The PTC heater further includes a second mounting member, which is mounted on a side of the first heating body close to the second heating body. The first mounting member, the second mounting member and the first heating body form a mounting groove, and the fuse body is mounted in the mounting groove.

7. The PTC heater according to claim 6, characterized in that: Along the horizontal direction, a side of the second mounting member facing away from the first heating body is connected to the second heating body.

8. The PTC heater according to any one of claims 1 to 7, characterized in that: The PTC heater also includes a first pole piece, the fuse is electrically connected to the first pole piece, the first pole piece includes a first portion extending toward the first heating body and a second portion extending toward the second heating body, the first portion is electrically connected to the first heating body, and the second portion is electrically connected to the second heating body.

9. The PTC heater according to any one of claims 1 to 7, characterized in that: The PTC heater further includes a temperature sensor for sensing the temperature of the heating component. Along the second direction, the heating component includes a first side surface and a second side surface that are oppositely arranged. The temperature sensor is installed on one of the first side surface and the second side surface.

10. A vehicle, characterized in that: The invention comprises the PTC heater as described in any one of claims 1 to 9.

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