Heating member, heating member assembly and heating member assembly unit

Abstract

A heating member, wherein an end cover (102) is assembled at a first opening (1011) in a first housing (101), and a first annular welding portion (1013), which surrounds the first opening (1011) and is formed by welding the end cover (102) and the first housing (101) into a whole by means of laser welding, is provided between the end cover (102) and the first housing (101) to seal a first mounting gap (1014) between the end cover (102) and the first housing (101); a positive electrode connector (103) comprises a positive electrode plate portion (1031) accommodated in the first housing (101) and a positive electrode connecting portion (1032) extending from the positive electrode plate portion (1031); a negative electrode connector (104) comprises a negative electrode plate portion (1041) and a negative electrode connecting portion (1042) extending from the negative electrode plate portion (1041); and a plurality of heating cores (105) are arranged in an array in an insulating layer (106) of the first housing (101), the positive electrode plate portion (1031) is pressed and fixed between a positive electrode of the heating cores (105) and the insulating layer (106), and the negative electrode plate portion (1041) is pressed and fixed between a negative electrode of the heating cores (105) and the insulating layer (106). Further disclosed are a heating member assembly and a heating member assembly unit. The heating member can not only reduce costs and energy consumption, but also has a prolonged service life.

Description

A heating element, component and assembly

[0001] Cross-references

[0002] This application claims priority to Chinese patent application No. 202410086548.6, filed on January 22, 2024, entitled “A Heating Element, Component, and Assembly,” the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the field of automotive parts, and in particular to a heating element, component, and assembly for a new energy vehicle air-conditioning system. Background Art

[0004] Existing air-conditioning systems for new energy vehicles generally have two types of cooling: air cooling and water cooling. For water cooling, heating efficiency, temperature control, processing cost, and safety are all the main parameters for considering the quality of the heating element. In the existing technology, the water-cooled heating element mainly includes a shell and a heating element installed in the shell. The shell is an integrally formed barrel-shaped tube with one end open, and then the heating element is assembled into the barrel-shaped tube. The main problem with this solution is that during the molding process, it is difficult to ensure the consistency and density of the shell wall thickness due to the limitations of the existing process. The shell wall thickness is generally at least higher than 1.5 mm, and the raw material cost is relatively high. In addition, such an overall molding method also makes it relatively difficult to form heating fins for heat conduction on the barrel-shaped tube body, which needs to be solved urgently.

[0005] Application Contents

[0006] Based on the above technical problems, the present application provides a heating element, component and assembly.

[0007] The present application provides a heating element, comprising: a first shell having a first opening and a second opening arranged opposite to each other, an insulating layer being applied to an inner wall of the first shell; an end cover, the end cover being mounted at the first opening of the first shell, a first annular weld portion being defined between the end cover and the first shell, the first annular weld portion being formed by laser welding a contact portion between the end cover and the first shell, the first annular weld portion surrounding the first opening, and the first annular weld portion sealing a first installation gap between the end cover and the first shell;

[0008] A positive electrode connector, the positive electrode connector includes a positive electrode plate body accommodated in the first shell, the positive electrode connector also includes a positive electrode connector extending from the positive electrode plate body, and the positive electrode connector extends out of the first shell through the second opening; a negative electrode connector, the negative electrode connector includes a negative electrode plate body accommodated in the first shell, the negative electrode connector also includes a negative electrode connector extending from the negative electrode plate body, and the negative electrode connector extends out of the first shell through the second opening; multiple heating cores, multiple heating cores are arranged in an array in the insulating layer, the positive electrode plate body is extruded and fixed between the positive electrode of the heating core and the insulating layer, and the negative electrode plate body is extruded and fixed between the negative electrode of the heating core and the insulating layer.

[0009] A protrusion extends from the end cover and is inserted into the first shell through the first opening, and the protrusion is adapted to fit in the first shell.

[0010] The present application proposes a heating element assembly, including the above-mentioned heating element, and the heating element assembly also includes: a plate body, a plurality of mounting grooves penetrating the plate body are opened on the plate body, and a plurality of heating elements extend into the plurality of mounting grooves in a one-to-one correspondence, and a second annular welding portion is provided between the inner wall of the mounting groove and the outer wall of the first shell, which is welded together by laser welding. The second annular welding portion forms a blockage for the second mounting gap between the inner wall of the mounting groove and the outer wall of the first shell, and the negative electrode connection portion and the positive electrode connection portion are located outside the slot.

[0011] The present application proposes a heating element assembly, including the above-mentioned heating element assembly, and the heating element assembly also includes: a second shell, one end of the second shell is open, the plate is assembled in the second shell and isolates the second shell from a first storage chamber, the end cover is located in the first storage chamber, the positive electrode connection part and the negative electrode connection part both extend outside the first storage chamber, and the second shell is provided with a liquid inlet pipe and a liquid outlet pipe connecting the inside and outside of the first storage chamber.

[0012] In which, the second shell has a second wall located in the first storage chamber, the plate body has a first wall located in the first storage chamber and opposite to the second wall, and a flow channel from the liquid inlet pipe to the liquid outlet pipe is cooperated between the outer walls of the multiple heating cores and the inner walls of the first storage chamber. The flow channel includes a liquid inlet section, a heating section, and a liquid outlet section. The liquid inlet section connects the liquid inlet pipe and the heating section, and the liquid outlet section connects the heating section and the liquid outlet pipe. The heating section includes one or more first-type segments and one or more second-type segments. A single first-type segment or a single second-type segment is located between two heating elements. The liquid in the first-type segment flows from the second wall to the first wall, and the liquid in the second-type segment flows from the first wall to the second wall. A first-type segment and a second-type segment are formed between any three adjacent heating elements. The first-type inlet allowing liquid in the second-type segment to flow into the first-type segment is located on the second wall side, and the second-type inlet allowing liquid in the first-type segment to flow into the second-type segment is located on the first wall side.

[0013] A first type gap is left between the heating element and the second wall, and the inner wall of the second shell has one or more first type isolation ribs that block one or more first type gaps to prevent the first type segment from being connected to the second type segment directly downstream on the second wall side through the first type gap.

[0014] In which, a second type of gap is left between the heating element and the third inner wall and / or the fourth inner wall of the second shell, and the second shell has a second type of isolation rib located inside the second shell to block one or more second type gaps, so as to prevent the second type segment from directly connecting with the downstream adjacent first type segment on the first wall side through the second type of gap.

[0015] The inner wall of the second shell is provided with a third type of isolation rib for partially blocking the second type of gap not blocked by the second type of isolation rib to reserve it for the second type of inlet.

[0016] A third type of gap serving as a liquid inlet section is left between the heating element assembly and the fifth inner wall of the second shell, and a fourth type of gap serving as a liquid outlet section is left between the heating element assembly and the sixth inner wall of the second shell.

[0017] The liquid inlet pipe is opened on the fifth inner wall, and the liquid outlet pipe is opened on the second wall.

[0018] In which, the heating element is provided with a diverter plate, and the connection between the diverter plate and the heating element extends from the first type inlet to the second type inlet, and the contact between the diverter plates located in the same first type segment and / or second type segment extends from the first type inlet to the second type inlet to divert the liquid flowing through the first type segment or the second type segment.

[0019] The diverter plate is made of heat-conducting material and is equipped with a number of heat-conducting fins.

[0020] Wherein, a plurality of heat-conducting fins located in the liquid inlet section and / or the heating section and / or the liquid outlet section are installed on the heating element.

[0021] The heating element assembly further comprises:

[0022] a cover body, the cover body being assembled at the open end of the second shell to form a second receiving chamber adjacent to the first receiving chamber in the second shell, the positive electrode connecting portion and the negative electrode connecting portion extending into the second receiving chamber;

[0023] A positive current collector is installed in the second receiving chamber and has a plurality of positive pins, which are electrically connected to the positive connecting portions in a one-to-one correspondence;

[0024] A negative current collector is installed in the second receiving chamber and has a plurality of negative pins, which are electrically connected to the negative connecting portions in a one-to-one correspondence;

[0025] A positive electrode external wire, which is introduced into the second receiving chamber through the first opening and electrically connected to the positive electrode manifold;

[0026] A fuse, the fuse being installed in the second receiving chamber;

[0027] The negative electrode external wire is introduced into the second receiving chamber and is electrically connected to the negative electrode busbar through a fuse.

[0028] Among them, fuses include:

[0029] The fusible link comprises a conductor and an insulating sheath sleeved on the conductor, wherein the conductor is connected in series with the negative external wire and the negative current collector;

[0030] The thermal conductive seat is installed on the board body, and the fusible wire passes through the thermal conductive seat and is installed on the thermal conductive seat.

[0031] Among them, the negative electrode collector includes:

[0032] a first connecting member, the first connecting member being electrically connected to the conductor, and a plurality of negative electrode pins being led out from the first connecting member;

[0033] a second connecting member, the second connecting member being connected in series with the conductor and the negative electrode external wire;

[0034] The negative electrode insulating seat is installed on the plate body, and the first connecting member and the second connecting member are both installed on the negative electrode insulating seat.

[0035] The positive current collector includes: a positive insulating seat, which is installed on the plate;

[0036] The third connecting piece is installed on the positive electrode insulating seat, and a plurality of positive electrode pins are led out from the third connecting piece.

[0037] The heating element assembly further includes: a temperature sensor, the temperature sensor is sealed and assembled in the assembly hole of the partition, and the temperature sensor is partially located in the second receiving chamber and partially located in the first receiving chamber;

[0038] The signal line is introduced into the first receiving chamber and is electrically connected to the temperature sensor.

[0039] The heating element assembly further comprises:

[0040] Control switch: the control switch is installed in series with the negative pole external wire;

[0041] The controller is connected to the control switch, and the controller is electrically connected to the temperature sensor through a signal line. When the temperature sensor receives a signal that the temperature in the second storage room exceeds a preset value, the control switch is controlled to be turned from closed to open; when the temperature sensor receives a signal that the temperature in the second storage room is lower than the preset value, the control switch is controlled to be turned from open to closed.

[0042] The heating element, component, and assembly proposed in this application minimize the weld area during laser welding and precisely control the weld trajectory. This effectively reduces cold and leaky welds while ensuring aesthetically pleasing welds. Furthermore, the interaction force between the end cap and the first shell is transferred not only to the weld point but also between the inner wall of the first shell and the outer wall of the protrusion, further preventing dislodging or leakage and increasing service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a perspective view of a specific embodiment of a heating element proposed in this application;

[0044] FIG2 is a perspective cross-sectional view of a specific embodiment of a heating element proposed in this application;

[0045] FIG3 is a perspective view of a specific embodiment of a heating element assembly proposed in this application;

[0046] FIG4 is a perspective cross-sectional view of a specific embodiment of a heating element assembly proposed in this application;

[0047] FIG5 is a front cross-sectional view of a specific embodiment of a heating element assembly proposed in this application;

[0048] FIG6 is a perspective cross-sectional view of a specific embodiment of a heating element assembly proposed in this application;

[0049] FIG7 is a perspective cross-sectional view of a specific embodiment of a heating element assembly proposed in this application;

[0050] FIG8 is a perspective cross-sectional view of a specific embodiment of a heating element assembly proposed in this application;

[0051] FIG9 is a partial structural exploded view of a specific embodiment of a heating element assembly proposed in this application;

[0052] FIG10 is a partial structural exploded view of another specific embodiment of a heating element assembly proposed in this application;

[0053] FIG11 is a perspective view of a specific embodiment of a heating element assembly proposed in this application;

[0054] FIG12 is a control principle diagram of a specific embodiment of a heating element assembly proposed in this application. DETAILED DESCRIPTION

[0055] Below, the present application describes the technical solution in detail through specific embodiments, but it should be clearly stated that these embodiments are for illustration and are not to be construed as limiting the scope of the present application.

[0056] 1-2 , the present application proposes a heating element, comprising: a first shell 101 , an end cover 102 , a positive electrode connector 103 , a negative electrode connector 104 , and a plurality of heating cores 105 .

[0057] The first shell 101 has a first opening 1011 and a second opening 1012 arranged opposite each other. An insulating layer 106 is applied to the inner wall of the first shell 101. The insulating layer 106 is specifically an insulating paper applied to the inner wall of the first shell 101. The first shell 101 is an integrally stamped aluminum alloy part. Compared with the prior art that integrally molds the first shell 101 and the end cap 102, separately molding the first shell 101 is equivalent to stamping an aluminum tube. Not only is the process simpler, it also ensures that the first shell 101 has a higher density, reduces porosity and cracks, improves heat transfer, reduces the risk of leakage, and thus increases service life. Moreover, compared with the prior art that can only control the average thickness of the first shell 101 to 1.5mm to 2.5mm, the thickness of the separately molded first shell 101 in this application can be controlled to between 0.1mm and 1.5mm, which not only saves materials and costs but also improves thermal conductivity.

[0058] The end cap 102 is assembled at the first opening 1011 on the first shell 101. A first annular weld 1013 is provided between the end cap 102 and the first shell 101. The first annular weld 1013 is formed by laser welding the contact area between the end cap 102 and the first shell 101. The first annular weld 1013 surrounds the first opening 1011 and seals the first installation gap 1014 between the end cap 102 and the first shell 101. The biggest problem with molding the first shell 101 and the end cap 102 separately is how to ensure the sealing of the first installation gap 1014 between the end cap 102 and the first shell 101. The present application uses laser welding to weld the first installation gap 1014 between the end cap 102 and the first shell 101 together to form a complete seal. Since the trajectory of the first installation gap 1014 is certain and the first installation gap 1014 is extremely narrow, the welding area is extremely small when laser welding is used, and the welding trajectory can be accurately controlled, so that when sealing is performed by laser welding, not only can false welds and leaking welds be effectively reduced, but also the aesthetics after welding can be ensured.

[0059] The positive electrode connector 103 includes a positive electrode plate portion 1031 received in the first housing 101 , and further includes a positive electrode connecting portion 1032 extending from the positive electrode plate portion 1031 . The positive electrode connecting portion 1032 extends out of the first housing 101 through the second opening 1012 .

[0060] The negative electrode connector 104 includes a negative electrode plate portion 1041 received in the first housing 101 , and further includes a negative electrode connecting portion 1042 extending from the negative electrode plate portion 1041 . The negative electrode connecting portion 1042 extends out of the first housing 101 through the second opening 1012 .

[0061] Multiple heating cores 105 are arranged in an array within the insulating layer 106, the positive plate body 1031 is squeezed and fixed between the positive pole of the heating core 105 and the insulating layer 106, and the negative plate body 1041 is squeezed and fixed between the negative pole of the heating core 105 and the insulating layer 106, wherein the multiple heating cores 105 are all PTC heating cores.

[0062] A protrusion 1021 extends from the end cover 102 and is inserted into the first shell 101 through the first opening 1011. The protrusion 1021 is adapted to be inside the first shell 101. The protrusion 1021 is snapped into the first shell 101. When the end cover 102 or the first shell 101 is subjected to force alone, the interaction force between the end cover 102 and the first shell 101 does not only fall on the welding point, but is transferred to between the inner wall of the first shell 101 and the outer wall of the protrusion 1021, thereby further preventing falling off or leakage and increasing the service life.

[0063] 3 , the present application proposes a heating element assembly, comprising the aforementioned multiple heating elements 1 and a plate body 2 .

[0064] The plate body 2 is provided with a plurality of mounting grooves 21 which penetrate the plate body 2, and the plurality of heating elements 1 extend into the plurality of mounting grooves 21 one by one. A second annular welding portion 22 is provided between the inner wall of the mounting groove 21 and the outer wall of the first shell 101, which is welded together into one piece by laser welding. The second annular welding portion 22 seals the second mounting gap 23 between the inner wall of the mounting groove 21 and the outer wall of the first shell 101, and the negative electrode connecting portion 1042 and the positive electrode connecting portion 1032 are located outside the groove.

[0065] Compared with the prior art, the biggest problem of forming the first shell 101 and the plate 2 separately is how to ensure the sealing of the second installation gap 23 between the plate 2 and the first shell 101. The present application adopts laser welding to weld the second installation gap 23 between the plate 2 and the first shell 101 together to form a complete seal. Since the trajectory of the second installation gap 23 is fixed and the first installation gap 1014 is extremely narrow, the welding area is extremely small when laser welding is used, and the welding trajectory can be precisely controlled. When sealing by laser welding, not only can false welds and leaks be effectively reduced, but also the aesthetics after welding can be ensured.

[0066] 4 , the present application proposes a heating element assembly, including the above-mentioned heating element assembly, and further including: a second shell 3 , a cover 5 , a positive external wire 8 , a positive current collector 6 , a negative current collector 7 , a fuse 9 , and a negative external wire 10 .

[0067] One end of the second shell 3 is open, the plate 2 is assembled in the second shell 3 and isolates the first receiving chamber 31 from the second shell 3, the end cover 102 is located in the first receiving chamber 31, the positive electrode connecting portion 1032 and the negative electrode connecting portion 1042 both extend outside the first receiving chamber 31, and the second shell 3 is provided with a liquid inlet pipe 32 and a liquid outlet pipe 33 that connect the inside and outside of the first receiving chamber 31.

[0068] Referring to Figure 5 , the second housing 3 has a second wall 34 positioned within the first receiving chamber 31, and the plate 2 has a first wall 24 positioned within the first receiving chamber 31, opposite the second wall 34. A flow channel 4 is formed between the outer walls of the plurality of heating cores 105 and the inner wall of the first receiving chamber 31, leading the liquid from the inlet pipe 32 to the outlet pipe 33. The flow channel 4 includes a liquid inlet section 41, a heating section 42, and a liquid outlet section 43. The liquid inlet section 41 connects the liquid inlet pipe 32 and the heating section 42, while the liquid outlet section 43 connects the heating section 42 and the outlet pipe 33. The heating section 42 includes one or more first-type segments 421 and one or more second-type segments 422. A single first-type segment 421 or a single second-type segment 422 is located between two adjacent heating elements 1. The liquid in the first-type segment 421 flows from the second wall 34 to the first wall 24, and the liquid in the second-type segment 422 flows from the first wall 24 to the second wall 34. A first-type segment 421 and a second-type segment 422 are formed between any three adjacent heating elements 1. The first-type inlet 423 allowing the liquid in the second-type segment 422 to flow into the first-type segment 421 is located on the side of the second wall 34, and the second-type inlet 424 allowing the liquid in the first-type segment 421 to flow into the second-type segment 422 is located on the side of the first wall 24.

[0069] The liquid flows into the first receiving chamber 31 through the liquid inlet pipe 32, and is transferred to the heating section 42 through the liquid inlet section 41. During the heating process, the liquid first enters the first type segment 421 from one end of the second wall 34, and then transfers to the adjacent second type segment 422 through the first wall 24, and repeats this process until it flows out of the heating section 42, then enters the liquid outlet section 43, and then flows out through the liquid outlet pipe 33. The above-mentioned flow channel design maximizes the liquid stroke and can maximize the heat conduction efficiency.

[0070] In the direction of gradually approaching the liquid outlet pipe 33, the power of the multiple heating elements 1 is gradually increased, thereby realizing multi-stage heating of the liquid, which can improve the heating efficiency more quickly and efficiently.

[0071] Referring to Figure 5, a first type gap 134 is left between the heating element 1 and the second wall 34, and the inner wall of the second shell 3 has one or more first type isolation ribs 35 that block one or more first type gaps 134 to prevent the first type segment 421 from being directly connected to the downstream adjacent second type segment 422 on the side of the second wall 34 through the first type gap 134.

[0072] Referring to Figure 6, a second type gap 135 is left between the heating element 1 and the third inner wall 37 and / or the fourth inner wall 38 of the second shell 3. The second shell 3 has a second type isolation rib 36 located inside the second shell 3 to block one or more second type gaps 135, so as to prevent the second type segment 422 from directly communicating with the downstream adjacent first type segment 421 on the side of the first wall 24 through the second type gap 135.

[0073] 7 , the inner wall of the second housing 3 has third-type isolation ribs 39 for partially blocking the second-type gaps 135 not blocked by the second-type isolation ribs 36 to leave them as second-type inlets 424 .

[0074] Referring to Figure 5 , a third type of gap 136, serving as a liquid inlet section 41, is provided between the heating element assembly and the fifth inner wall 310 of the second housing 3. A fourth type of gap 137, serving as a liquid outlet section 43, is provided between the heating element assembly and the sixth inner wall 311 of the second housing 3. The liquid inlet pipe 32 is provided on the fifth inner wall 310, and the liquid outlet pipe 33 is provided on the second wall 34.

[0075] Compared with forming the flow channel 4, in the present application, the flow channel 4 is directly matched between the heating element assembly and the inner wall of the second shell 3, which will undoubtedly reduce the difficulty of processing and assembly, thereby reducing costs.

[0076] Referring to Figure 6 , the heater 1 includes a diverter plate 107. The connection between the diverter plate 107 and the heater 1 extends from the first-type inlet 423 to the second-type inlet 424. The contact between diverter plates 107 within the same first-type segment 421 and / or second-type segment 422 extends from the first-type inlet 423 to the second-type inlet 424, thereby diverting liquid flowing through the first-type segment 421 or the second-type segment 422. The diverter plate 107 is made of a thermally conductive material and is mounted with a plurality of thermally conductive fins 108. The heater 1 is also mounted with a plurality of thermally conductive fins 108 located within the liquid inlet section 41, the heating section 42, and / or the liquid outlet section 43.

[0077] The first type segment 421 and / or the second type segment 422 are diverted, and the diverter plate 107 is made of heat-conducting material. A number of heat-conducting fins 108 are installed on the diverter plate 107, which will undoubtedly increase the heat conduction area, thereby improving the heat conduction efficiency. Moreover, the heat-conducting fins 108 and the diverter plate 107 can be integrally pressed and formed with the first shell 101, and the processing efficiency is high.

[0078] 8-12 , the cover 5 is assembled on the open end of the second housing 3 to form a second receiving chamber 312 adjacent to the first receiving chamber 31 in the second housing 3 , and the positive electrode connecting portion 1032 and the negative electrode connecting portion 1042 extend into the second receiving chamber 312 .

[0079] The positive current collector 6 is installed in the second storage chamber 312. The positive current collector 6 has multiple positive pins 61. The positive pins 61 are electrically connected to the positive connection part 1032 one by one. The positive current collector 6 includes a positive insulating seat 62 and a third connecting member 63. The positive insulating seat 62 is installed on the plate body 2. The third connecting member 63 is installed on the positive insulating seat 62. Multiple positive pins 61 are led out from the third connecting member 63.

[0080] The negative current collector 7 is installed in the second storage chamber 312. The negative current collector 7 has multiple negative pins 71. The negative pins 71 are electrically connected to the negative connecting part 1042 in a one-to-one correspondence. The negative current collector 7 includes a first connector 72, a second connector 73 and a negative insulating seat 74. The first connector 72 is electrically connected to the conductor 911, and multiple negative pins 71 are led out from the first connector 72; the second connector 73 is connected in series with the conductor 911 and the negative external wire 10. The negative insulating seat 74 is installed on the plate body 2, and the first connector 72 and the second connector 73 are both installed on the negative insulating seat 74.

[0081] The positive electrode external wire 8 is introduced into the second receiving chamber 312 through the first opening 1011 and is electrically connected to the positive electrode current collector 6 .

[0082] The fuse 9 is installed in the second storage chamber 312. The fuse 9 includes a fusible wire 91 and a thermally conductive seat 92. The fusible wire 91 includes a conductor 911 and an insulating sheath 912 sleeved on the conductor 911. The conductor 911 is connected in series with the negative external wire 10 and the negative current collector 7. The thermally conductive seat 92 is installed on the plate body 2. The fusible wire 91 passes through the thermally conductive seat 92 and is installed on the thermally conductive seat 92.

[0083] The negative electrode external cable 10 is introduced into the second receiving chamber 312 and is electrically connected to the negative electrode busbar 7 through the fuse 9 .

[0084] The heating resistor in the PTC-type heating core 105 is a temperature-sensitive resistor. When the temperature is too high, the resistance increases, thus limiting the high temperature. However, after prolonged high-temperature use, the control system may fail, causing the circuit to short-circuit, potentially leading to failure of the high-temperature protection of the heating core 105. By connecting a fuse 91 and establishing heat conduction between the fuse 9 and the plate 2 that encloses the first storage chamber 312, when the temperature inside the first storage chamber 312 is too high, the conductor 911 will melt, disconnecting the circuit and preventing further secondary damage.

[0085] The heating element assembly also includes a temperature sensor 11, a controller 14, a signal line 12, and a control switch 13. The temperature sensor 11 is sealed within the mounting hole of the partition, with part of the temperature sensor 11 located in the second storage chamber 312 and part located in the first storage chamber 31. The signal line 12 is routed into the first storage chamber 31 and electrically connected to the temperature sensor 11. The control switch 13 is mounted in series with the negative external cable 10. The controller 14 is connected to the control switch 13 and electrically connected to the temperature sensor 11 via the signal line 12. When the temperature sensor 11 receives a signal indicating that the temperature in the second storage chamber 312 exceeds a preset value, the control switch 13 is switched from closed to open. When the temperature sensor 11 receives a signal indicating that the temperature in the second storage chamber 312 is below a preset value, the control switch 13 is switched from open to closed. The temperature sensor 11 senses the temperature in the first storage chamber 312, enabling real-time temperature adjustment within the first storage chamber 312.

[0086] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and application concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A heating element, comprising: A first housing (101) having a first opening (1011) and a second opening (1012) arranged opposite to each other on the first housing (101), and an insulating layer (106) is laid on the inner wall of the first housing (101); An end cap (102) assembled at the first opening (1011) of the first housing (101), with a first annular welding portion (1013) between the end cap (102) and the first housing (101). The first annular welding portion (1013) is formed by laser welding the contact portion between the end cap (102) and the first housing (101). The first annular welding portion (1013) surrounds the first opening (1011) and seals the first installation gap (1014) between the end cap (102) and the first housing (101); A positive electrode connector (103), which includes a positive electrode plate body portion (1031) received in the first housing (101), and the positive electrode connector (103) further includes a positive electrode connection portion (1032) extending from the positive electrode plate body portion (1031). The positive electrode connection portion (1032) extends out of the first housing (101) through the second opening (1012); A negative electrode connector (104), which includes a negative electrode plate body portion (1041) received in the first housing (101), and the negative electrode connector (104) further includes a negative electrode connection portion (1042) extending from the negative electrode plate body portion (1041). The negative electrode connection portion (1042) extends out of the first housing (101) through the second opening (1012); A plurality of heating cores (105) arranged in an array in the insulating layer (106), the positive electrode plate body portion (1031) is pressed and fixed between the positive electrode of the heating core (105) and the insulating layer (106), and the negative electrode plate body portion (1041) is pressed and fixed between the negative electrode of the heating core (105) and the insulating layer (106) therebetween.

2. The heating element according to claim 1, wherein, A protrusion (1021) extending from the end cap (102) and inserted into the first housing (101) through the first opening (1011), and the protrusion (1021) is adapted to be inside the first housing (101).

3. A heating element assembly includes a plurality of heating elements as described in claim 1, and the heating element assembly further includes: A plate body (2) having a plurality of mounting grooves (21) penetrating through the plate body (2). A plurality of heating elements (1) are respectively inserted into the plurality of mounting grooves (21). There is a second annular welding portion (22) formed by laser welding the inner wall of the mounting groove (21) and the outer wall of the first housing (101) to integrate them. The second annular welding portion (22) seals the second installation gap (23) between the inner wall of the mounting groove (21) and the outer wall of the first housing (101), and the negative electrode connection portion (1042) and the positive electrode connection portion (1032) are located outside the groove opening.

4. A heating element assembly comprising the heating element assembly according to claim 3, further comprising: The second housing (3), one end of the second housing (3) is open, the plate body (2) is assembled in the second housing (3) and isolates a first storage chamber (31) inside the second housing (3), the end cover (102) is located in the first storage chamber (31), both the positive connection part (1032) and the negative connection part (1042) extend outside the first storage chamber (31), and a liquid inlet pipe (32) and a liquid outlet pipe (33) communicating the inside and outside of the first storage chamber (31) are provided on the second housing (3).

5. The heating element assembly according to claim 4, wherein: The second housing (3) has a second wall (34) located in the first storage chamber (31), the plate body (2) has a first wall (24) located in the first storage chamber (31) and opposite to the second wall (34), a flow channel (4) flowing from the liquid inlet pipe (32) to the liquid outlet pipe (33) is formed between the outer walls of multiple heating cores (105) and the inner wall of the first storage chamber (31). The flow channel (4) includes a liquid inlet section (41), a heating section (42), and a liquid outlet section (43). The liquid inlet section (41) communicates the liquid inlet pipe (32) with the heating section (42), the liquid outlet section (43) communicates the heating section (42) with the liquid outlet pipe (33). The heating section (42) includes one or more first type segments (421) and one or more second type segments (422). Each single first type segment (421) or each single second type segment (422) is located between two adjacent heating elements (1). The liquid flow direction in the first type segment (421) is from the second wall (34) to the first wall (24), and the liquid flow direction in the second type segment (422) is from the first wall (24) to the second wall (34). A first type segment (421) and a second type segment (422) are formed between any three adjacent heating elements (1). The first type inlets (423) allowing the liquid in the second type segment (422) to flow into the first type segment (421) are all located on the side of the second wall (34), and the second type inlets (424) allowing the liquid in the first type segment (421) to flow into the second type segment (422) are all located on the side of the first wall (24).

6. The heating element assembly according to claim 5, wherein, A first type gap (134) is left between the heating element (1) and the second wall (34), and one or more first type isolation ribs (35) blocking one or more first type gaps (134) are provided on the inner wall of the second housing (3) to block the direct communication between the first type segment (421) on the side of the second wall (34) and the adjacent downstream second type segment (422) through the first type gap (134).

7. The heating element assembly according to claim 5, wherein, A second type gap (135) is left between the heating element (1) and the third inner wall (37) and / or the fourth inner wall (38) of the second housing (3), and a second type isolation rib (36) located inside the second housing (3) and blocking one or more second type gaps (135) is provided on the second housing (3) to block the direct communication between the second type segment (422) on the side of the first wall (24) and the adjacent downstream first type segment (421) through the second type gap (135).

8. The heating element assembly according to claim 7, wherein, On the inner wall of the second housing (3), there is a third type of isolation rib (39) that partially blocks the second type of gap (135) that blocks the second type of isolation rib (36) to leave a second type of inlet (424).

9. The heating element assembly according to claim 5, wherein, A third type of gap (136) serving as the liquid inlet section (41) is left between the heating element assembly and the fifth inner wall (310) of the second housing (3), and a fourth type of gap (137) serving as the liquid outlet section (43) is left between the heating element assembly and the sixth inner wall (311) of the second housing (3).

10. The heating element assembly according to claim 9, wherein, The liquid inlet pipe (32) is opened on the fifth inner wall (310), and the liquid outlet pipe (33) is opened on the second wall (34).

11. The heating element assembly according to claim 5, wherein, On the heating element (1), there is a flow dividing plate (107). The connection between the flow dividing plate (107) and the heating element (1) extends from the first type of inlet (423) to the second type of inlet (424), and the contact between the flow dividing plates (107) located within the same first type of segment (421) and / or second type of segment (422) extends from the first type of inlet (423) to the second type of inlet (424) to divide the liquid flowing through the first type of segment (421) or the second type of segment (422).

12. The heating element assembly according to claim 11, wherein, The flow dividing plate (107) is made of a heat-conducting material, and a number of heat-conducting fins (108) are installed on the flow dividing plate (107).

13. The heating element assembly according to claim 4, wherein, A number of heat-conducting fins (108) are installed on the heating element (1) within the liquid inlet section (41) and / or the heating section (42) and / or the liquid outlet section (43).

14. The heating element assembly according to claim 4, wherein, The heating element assembly further includes: A cover body (5) is assembled at the open end of the second housing (3) to form a second storage chamber (312) adjacent to the first storage chamber (31) within the second housing (3), and the positive connection part (1032) and the negative connection part (1042) extend into the second storage chamber (312). A positive current collector (6) is installed within the second storage chamber (312). The positive current collector (6) has a number of positive pins (61), and the positive pins (61) are electrically connected to the positive connection part (1032) in a one-to-one correspondence. A negative current collector (7) is installed within the second storage chamber (312). The negative current collector (7) has a number of negative pins (71), and the negative pins (71) are electrically connected to the negative connection part (1042) in a one-to-one correspondence. A positive external wire (8) is introduced into the second storage chamber (312) through the first opening (1011) and is electrically connected to the positive current collector (6). A fuse (9) is installed within the second storage chamber (312). A negative external wire (10) is introduced into the second storage chamber (312) and is electrically connected to the negative current collector (7) through the fuse (9).

15. The heating element assembly according to claim 14, wherein, The fuse (9) includes: A fuse wire (91), the fuse wire (91) includes a conductor (911) and an insulating sheath (912) sleeved on the conductor (911), and the conductor (911) is connected in series between the negative external wire (10) and the negative current collector (7). The heat conducting base (92) is installed on the board body (2), and the fuse wire (91) penetrates through the heat conducting base (92) and is installed on the heat conducting base (92).

16. The heating element assembly according to claim 15, wherein, The negative bus bar (7) includes: The first connecting member (72) is electrically connected to the conductor (911), and a plurality of negative pins (71) are led out from the first connecting member (72); The second connecting member (73) serially connects the conductor (911) and the negative external wiring (10); The negative insulating seat (74) is installed on the board body (2), and both the first connecting member (72) and the second connecting member (73) are installed on the negative insulating seat (74).

17. The heating element assembly according to claim 14, wherein, The positive bus bar (6) includes: the positive insulating seat (62), and the positive insulating seat (62) is installed on the board body (2); The third connecting member (63) is installed on the positive insulating seat (62), and a plurality of positive pins (61) are led out from the third connecting member (63).

18. The heating element assembly according to claim 14, wherein, This heating element assembly further includes: The temperature sensor (11) is hermetically assembled in the assembly hole of the partition board. The temperature sensor (11) is partially located in the second storage chamber (312) and partially located in the first storage chamber (31); The signal wire (12) is introduced into the first storage chamber (31) and is electrically connected to the temperature sensor (11).

19. The heating element assembly according to claim 18, wherein, This heating element assembly further includes: The control switch (13) is installed and serially connected on the negative external wiring (10); The controller (14) is control-connected to the control switch (13). The controller (14) is electrically connected to the temperature sensor (11) through the signal wire (12). When receiving that the temperature in the second storage chamber (312) exceeds the preset value even if it is transmitted by the temperature sensor (11), it will control the control switch (13) to change from closed to open; when receiving that the temperature in the second storage chamber (312) is lower than the preset value even if it is transmitted by the temperature sensor (11), it will control the control switch (13) to change from open to closed.

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