Temperature control system and oven

Abstract

The invention relates to the technical field of temperature control, and particularly discloses a temperature control system which comprises a control unit, a temperature detection module, a rectifier and a heating assembly. The temperature detection module is used for collecting the temperature of the heating assembly in real time and feeding back the collected temperature data to the control unit in real time; the control unit is used for receiving temperature data fed back by the temperature detection module and controlling current and voltage output by the rectifier in real time according to the temperature data; the rectifier is used for receiving an instruction of the control unit and outputting current and voltage to the heating assembly; and the heating assembly is used for heating, cooling or keeping a constant temperature according to the magnitude of current and voltage output by the rectifier so as to reach or keep a preset temperature. As the rectifier can output the stable direct-current power supply, and the direct-current power supply has low loss in the aspect of energy transmission efficiency, the current and voltage can be favorably output through the rectifier so that the heating assembly can stably heat up and cool down or keep the current temperature.

Description

Technical Field

[0001] The invention relates to the technical field of temperature control, and in particular to a temperature control system and an oven. Background Art

[0002] The industrial electricity commonly used in temperature control systems in industrial applications is alternating current, which is widely used to drive motors and other equipment that requires high power supply. Since alternating current can easily change the voltage level through a transformer to meet the needs of different loads and transmission distances, it has high adaptability and economy in industrial applications. However, the size and direction of alternating current will change periodically over time, so the output voltage is unstable. In addition, during the long-distance transmission of alternating current, due to the existence of resistance, there will be energy loss and large transmission loss. Due to the above problems with alternating current, the temperature control of the temperature control system is unstable and stable constant temperature control cannot be achieved. At the same time, due to the problem of transmission loss, the heating module in the temperature control system cannot reach the preset temperature. Summary of the invention

[0003] The present invention aims to solve the above technical problems existing in the prior art and provides a temperature control system capable of stably performing constant temperature control, and an oven having the temperature control system.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A temperature control system according to the present invention comprises a control unit, a temperature detection module, a rectifier and a heating component;

[0006] The temperature detection module is used to collect the temperature of the heating component in real time, and feed back the collected temperature data to the control unit in real time;

[0007] The control unit is used to receive the temperature data fed back by the temperature detection module, and to control the current and voltage output by the rectifier in real time according to the temperature data;

[0008] The rectifier is used to receive instructions from the control unit and output current and voltage to the heating component;

[0009] The heating component heats up, cools down or maintains a constant temperature according to the magnitude of the current and voltage output by the rectifier to reach or maintain a preset temperature; the heating component includes a substrate, a plurality of heating sheets, at least one first electrode and at least one second electrode, the plurality of heating sheets are attached to the substrate and arranged at intervals, the second electrode and the first electrode are also arranged on the substrate, each heating sheet is electrically connected to at least one first electrode and at least one second electrode; the first electrode and the second electrode are both electrically connected to the rectifier.

[0010] The temperature control system described in the present invention is beneficial for the rectifier to output a stable DC power supply, and the DC power supply has little loss in energy transmission efficiency, so it is beneficial to output current and voltage through the rectifier for the heating component to stably heat up, cool down or maintain the current temperature. At the same time, since the DC power supply has little energy transmission loss, the heating component can be heated quickly and the heating efficiency is high.

[0011] A plurality of heating sheets are attached to the substrate and arranged at intervals, the second electrode and the first electrode are also arranged on the substrate, each heating sheet is electrically connected to at least one first electrode and at least one second electrode, and the heating sheet is connected to an external power source through the first electrode and the second electrode for electrical conduction, so that the heating sheet generates heat. The above structure is simple, and the wiring is regular and concise. In addition, the first electrode, the second electrode and the heating sheet are supported and installed by the substrate, so that the heating component can be modularized as a whole, which is convenient for the subsequent installation of the heating component in the housing or box of other heating and drying equipment.

[0012] Furthermore, the plurality of heating sheets are arranged at intervals along a first direction, the first electrode extends along the first direction and is electrically connected to some or all of the heating sheets, and the second electrode extends along the first direction and is electrically connected to some or all of the heating sheets.

[0013] Furthermore, the first electrode and the second electrode have two or more respectively; all the first electrodes are connected as a whole, all the second electrodes are connected as a whole, the multiple first electrodes and the multiple second electrodes are arranged alternately, and each first electrode and second electrode is electrically connected to all the heating plates.

[0014] Further, a first conductor is provided at the first end of the substrate, and a second conductor is provided at the second end of the substrate. In the first direction, all the heating sheets are located between the first conductor and the second conductor, all the first electrodes are connected as a whole through the first conductor, and all the first electrodes are arranged at intervals on the first conductor; all the second electrodes are connected as a whole through the second conductor, and all the second electrodes are arranged at intervals on the second conductor; the first electrode extends from the first end to the second end of the substrate, and there is a gap between the free ends of all the first electrodes and the second conductor; the first electrode extends from the second end to the first end of the substrate, and there is a gap between the free ends of all the second electrodes and the first conductor; the first electrode and the second electrode are electrically connected to the rectifier through the first conductor and the second conductor respectively;

[0015] Alternatively, the first electrode and the second electrode are rectangular and arranged in parallel, the lateral distance between the second electrode and the first electrode is equal, and the lateral distance between the second electrode and the first electrode is 3 cm to 15 cm.

[0016] Furthermore, the first electrode and the second electrode have two or more respectively; a first conductor and a second conductor are arranged on the substrate, all the first electrodes are connected as a whole through the first conductor, and all the first electrodes are arranged at intervals on the first conductor; all the second electrodes are connected as a whole through the second conductor, and all the second electrodes are arranged at intervals on the second conductor, and electrode contacts for electrically connecting to a power source are respectively arranged on the first conductor and the second conductor, and the electrode contacts are elastic members and are in a compressed state under force when in working state.

[0017] Further, the second electrode and the first electrode are connected to the upper surface of the heating sheet and the substrate, the heating sheet is sandwiched between the second electrode, the first electrode and the substrate, the heating sheet is formed by curing the conductive material continuously coated on the substrate, the second electrode and the first electrode are formed by curing the conductive material continuously coated on the substrate and the heating sheet, at the position where the heating sheet is provided, the second electrode and the first electrode are coated on the heating sheet, and at the gap between the heating sheets, the second electrode and the first electrode are coated on the substrate;

[0018] Alternatively, the second electrode and the first electrode connect the upper surface of the heating sheet and the lower surface of the substrate, the second electrode and the first electrode are sandwiched between the heating sheet and the substrate, the second electrode and the first electrode are formed by curing the conductive material continuously coated on the substrate, the heating sheet is formed by curing the conductive material continuously coated on the substrate, the second electrode and the first electrode, the heating sheet is coated on the second electrode and the first electrode at the position where the second electrode and the first electrode are provided, and the heating sheet is coated on the substrate at the gap between the second electrode and the first electrode;

[0019] Alternatively, the substrate is made of insulating ceramic material, the heating sheet contains graphene material, and the heating sheet, the first electrode and the second electrode are all formed by curing a continuously coated conductive material;

[0020] Alternatively, the heating sheet is rectangular, the lengths and widths of the multiple heating sheets are equal and they are arranged in parallel, the wide sides of the multiple heating sheets are flush, the first electrode and the second electrode extend along the width direction of the heating sheet and connect each of the heating sheets, the first electrode and the second electrode are also rectangular, and the length direction of the first electrode and the second electrode is perpendicular to the length direction of the heating sheet.

[0021] Furthermore, the rectifier includes a rectifier installation shell, a heat dissipation assembly is arranged in the rectifier installation shell, a synchronization module assembly is connected to the heat dissipation assembly, and a transformer assembly is electrically connected to the synchronization module assembly; the synchronization module assembly includes a PCB board, a conductive base plate and a conductive strip, the PCB board connects the conductive base plate and the conductive strip, the synchronization module assembly is connected to the heat dissipation assembly through the conductive base plate and the conductive strip, and an insulating layer is arranged between the conductive base plate and the heat dissipation assembly and between the conductive strip and the heat dissipation assembly to isolate the conductivity; the transformer assembly includes a magnetic core skeleton, one end of the magnetic core skeleton is connected to the conductive base plate, a magnetic core is arranged on the magnetic core skeleton, an output copper plate is also connected to the other end of the magnetic core skeleton, a flexible conductive member is connected to the output copper plate, and the flexible conductive member is also connected to the conductive strip of the synchronization module assembly.

[0022] Furthermore, there are two conductive strips, which are respectively arranged on both sides of the conductive bottom plate; the insulating layer covers the two conductive strips and the surface of the conductive bottom plate at the same time, or the number of insulating layers is consistent with the number of conductive strips and the conductive bottom plate, and an insulating layer is respectively arranged on the surface of each conductive strip and the surface of the conductive bottom plate;

[0023] Alternatively, the magnetic core skeleton comprises a left skeleton and a right skeleton; wherein the left skeleton comprises a mounting protrusion, the mounting protrusion is provided with a first through hole, and the structure of the right skeleton is the same as that of the left skeleton; when the left skeleton and the right skeleton are docked, the mounting protrusion on the left skeleton is docked with the mounting protrusion on the right skeleton to form a magnetic core mounting seat, and the first through hole on the left skeleton is connected with the first through hole on the right skeleton to form a through hole for the flexible conductive member to pass through;

[0024] Alternatively, the flexible conductive member is a soft copper belt, the soft copper belt comprises a first connecting end and a second connecting end arranged horizontally, the first connecting end and the second connecting end are connected via an intermediate connecting portion, the intermediate connecting portion of the soft copper belt passes through a through hole in the middle of the magnetic core skeleton and an inner hole of the magnetic core, the first connecting end of the soft copper belt is connected to the output copper plate, and the second connecting end is connected to the synchronization module assembly;

[0025] Alternatively, the output copper plate includes a first connecting plate, a second connecting plate is arranged on one side edge of the first connecting plate, a third connecting plate is arranged on one side edge of the second connecting plate, the first connecting plate and the second connecting plate are arranged at an angle, the second connecting plate and the third connecting plate are arranged at an angle, and the first connecting plate is parallel to the third connecting plate; one end of the flexible conductive member is connected to the first connecting plate, and the third connecting plate is connected to the first output copper busbar.

[0026] Furthermore, the control unit performs PID calculation based on the received temperature data, and controls the current and voltage output by the rectifier according to the PID calculation results. After the temperature of the heating component reaches the preset temperature, the control unit controls the rectifier to reduce the power output so that the heating component maintains a constant preset temperature.

[0027] An oven described in the present invention comprises a box body and the above-mentioned temperature control system; the heating component and the temperature detection module in the temperature control system are arranged in the box body, and the control unit and the rectifier in the temperature control system are arranged outside the box body.

[0028] The oven described in the present invention has all the beneficial technical effects brought by the temperature control system, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other purposes, features and advantages of the present invention will become more clear by more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0030] Figure 1 It is a flow chart of the temperature control system of the present invention.

[0031] Figure 2 A perspective view of a heating component.

[0032] Figure 3 The front view of the heating component.

[0033] Figure 4 and Figure 5 Schematic diagram of different connection methods of the first electrode, the second electrode and the heating plate.

[0034] Figure 6 and Figure 7 It is a side view of the first electrode, the second electrode and the heating plate at different positional relationships.

[0035] Figure 8 It is a schematic diagram of the structure of the rectifier of the present invention.

[0036] Fig. 9 for Figure 8 Schematic diagram of the structure with part of the wall of the rectifier mounting shell removed.

[0037] Fig.10 This is a schematic diagram of the rectifier.

[0038] Fig.11 This is a schematic diagram of the synchronization module component structure.

[0039] Fig.12This is a schematic diagram of the exploded structure of the transformer components.

[0040] Fig.13 This is a schematic diagram of the connection structure between the transformer component and the synchronization module component.

[0041] Fig.14 Schematic diagram of the core skeleton structure.

[0042] Fig.15 Schematic diagram of the oven structure (one set of heating components is removed).

[0043] Fig.16 for Fig.15 A partial enlarged view of part A. DETAILED DESCRIPTION

[0044] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings.

[0045] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0047] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0049] The present invention specifically provides an embodiment of a temperature control system, see Figure 1 , including a control unit, a temperature detection module, a rectifier and a heating component; the temperature detection module is used to collect the temperature of the heating component in real time, and feed back the collected temperature data to the control unit in real time; the control unit is used to receive the temperature data fed back by the temperature detection module, and control the current and voltage output by the rectifier in real time according to the temperature data; the rectifier is used to receive the instructions of the control unit and output current and voltage to the heating component; the heating component heats up, cools down or maintains a constant temperature according to the size of the current and voltage output by the rectifier to reach or maintain a preset temperature. Among them, the temperature detection module is a temperature sensor; the control unit can adopt a PLC or a microcontroller, the control unit performs PID calculation according to the received temperature data, and controls the current and voltage output by the rectifier according to the PID calculation result (it can also be understood as controlling the power output of the rectifier). After the temperature of the heating component reaches the preset temperature, the control unit controls the rectifier to reduce the power output to reduce energy consumption, while keeping the heating component at a constant preset temperature. When the temperature of the heating component fluctuates due to external environmental factors and cannot maintain a constant preset temperature, the control unit performs PID calculation according to the real-time temperature detected by the temperature detection module, and adjusts the output power of the rectifier again according to the calculation result (it can also be understood as adjusting the voltage and current output by the rectifier), so that the temperature of the heating component returns to the preset temperature and continues to maintain the preset temperature. In addition, the PID algorithm uses a PID regulator, which is a linear regulator, wherein the PID regulator and the PID algorithm itself belong to the prior art and are not the inventive point of the present invention. The temperature control system in the present invention realizes stable, efficient and safe output of DC power supply through the cooperation between various modules. In addition, through the external control unit, the output power of the rectifier can be regulated without changing the internal control mode of the rectifier, thereby simplifying the control mode. When it is necessary to control multiple rectifiers in industrial applications and meet the needs of large current output, the external control unit can meet the needs of high-speed computing control, with higher efficiency and faster speed.

[0050] In this embodiment, see Figure 2 and Figure 3 The heating component includes a substrate 1, a plurality of heating sheets 2, at least one first electrode 3 and at least one second electrode 4. The plurality of heating sheets 2 are attached to the substrate 1 and arranged at intervals. The second electrode 4 and the first electrode 3 are also arranged on the substrate 1. Each heating sheet 2 is electrically connected to at least one first electrode 3 and at least one second electrode 4. The so-called "attachment" can be understood as the entire surface of the heating sheet 2 is completely attached to the substrate 1, and can also be understood as only a part of the surface of the heating sheet 2 is attached to the substrate 1; and the first electrode 3 can be a positive electrode or a negative electrode, and the second electrode 4 can be a positive electrode or a negative electrode, but the polarities of the first electrode 3 and the second electrode 4 are opposite. Specifically, the above structure has the following specific implementation methods: The first implementation method, see Figure 4 , each first electrode 3 and each second electrode 4 is electrically connected to only one heating sheet 2. This embodiment gives an example in which two first electrodes 3 and two second electrodes 4 are electrically connected to each heating sheet 2. For the second embodiment, see Figure 5 , each first electrode 3 and each second electrode 4 are electrically connected to a portion of the heating sheet 2; the third embodiment, see Figure 2 and Figure 3 , each first electrode 3 and each second electrode 4 are electrically connected to all the heating sheets 2; of course, the electrical connection modes of the first electrodes 3, the second electrodes 4 and the heating sheets 2 are various, as long as each heating sheet 2 is electrically connected to at least one first electrode 3 and at least one second electrode 4. In this embodiment, the shape of the heating sheet 2 can be rectangular, square, circular, oval, etc. The first electrode 3 and the second electrode 4 are both electrically connected to the rectifier.

[0051] In a preferred embodiment, a plurality of heating sheets 2 are arranged at intervals along a first direction, a first electrode 3 extends along the first direction and is electrically connected to part or all of the heating sheets 2, and a second electrode 4 extends along the first direction and is electrically connected to part or all of the heating sheets 2. The so-called "first direction" is the width direction of the heating sheet 2, and a plurality of heating sheets 2 are arranged at intervals along the width direction thereof, or the so-called "first direction" is the length direction of the heating sheet 2, and a plurality of heating sheets 2 are arranged at intervals along the length direction thereof. See Figure 4 and Figure 5 In the embodiment, the first electrode 3 is electrically connected to a part of the heating sheet 2, and the second electrode 4 is also electrically connected to a part of the heating sheet 2, see Figure 3 In the implementation mode, the first electrode 3 and the second electrode 4 are electrically connected to all the heating sheets 2. This implementation mode can further regularize the arrangement of the wires (i.e., electrodes), simplify the wiring structure, and make the structure of the heating component simpler and more beautiful.

[0052] In a preferred embodiment, see Figure 2-5, the first electrode 3 and the second electrode 4 have two or more respectively; all the first electrodes 3 are connected as one, all the second electrodes 4 are connected as one, and the multiple first electrodes 3 and the multiple second electrodes 4 are arranged alternately and spaced apart, which can realize heating at different positions of the heating sheet 2, so that the heating efficiency of the heating sheet 2 is high and the heating is uniform; each first electrode 3 and the second electrode 4 are electrically connected to all the heating sheets 2. Specifically, the first end of the substrate 1 is provided with a first conductor 5, and the second end of the substrate 1 is provided with a second conductor 6. The so-called "first end" and "second end" are the head end or the tail end of the arrangement direction of the multiple heating sheets 2, that is, when the first end is the head end, the second end is the tail end, and vice versa, and when the first conductor 5 or the second conductor 6 is provided at the first end or the second end, the first conductor 5 and the second conductor 6 are not in contact with the heating sheet 2; in the first direction, all the heating sheets 2 are located between the first conductor 5 and the second conductor 6, all the first electrodes 3 are connected as one through the first conductor 5, and all the first electrodes 3 are arranged alternately on the first conductor 5, all The second electrode 4 is connected as a whole through the second conductor 6, and all the second electrodes 4 are arranged at intervals on the second conductor 6, which is convenient for the connection between the first electrode 3 and the second electrode 4 and the heating plate 2; the first electrode 3 extends from the first end to the second end of the substrate 1, and there is a gap between the free ends of all the first electrodes 3 and the second conductor 6, and the first electrode 3 extends from the second end to the first end of the substrate 1, and there is a gap between the free ends of all the second electrodes 4 and the first conductor 5, thereby avoiding the generation of local hot spots between the free ends of the second electrode 4 and the first conductor 5 and between the first electrode 3 and the second conductor 6 due to being too close, affecting the heating uniformity of the heating plate 2. In addition, one of the multiple first electrodes 3 is set at one end of the heating plate 2 perpendicular to the first conductor 5 (or perpendicular to the second conductor 6), and the ends of all the heating plates 2 are connected at this end, and one of the multiple second electrodes 4 is set at the other end of the heating plate 2 perpendicular to the first conductor 5 (or perpendicular to the second conductor 6), and the ends of all the heating plates 2 are connected at this end. Through this structure, it can be effectively ensured that the entire surface of the heating plate 2 can heat normally.Specifically, two first electrodes 3 and two second electrodes 4 are used in this embodiment, and since there are multiple heating sheets 2, the heating sheets 2 located at the head and tail are the heating sheets 2 located at the first end and the second end. When the first conductor 5 is arranged on the periphery of the heating sheet 2 located at the head end, one of the first electrodes 3 is located at one end of the heating sheet 2 perpendicular to the first conductor 5, and connects the ends of all the heating sheets 2 at this end, which can be located on the surface of the common end or at the outer edge of the common end and connected to the side edge to realize the flow of current at the end of the heating sheet 2, and the other first electrode 3 is located on the surface of all the heating sheets 2 to realize the flow of current at the heating sheet 2. The flow of current on the surface of the sheet 2; when the second conductor 6 is arranged on the periphery of the heating sheet 2 located at the tail end, one of the second electrodes 4 is located at the other end of the heating sheet 2 perpendicular to the first conductor 5, and connects the ends of all the heating sheets 2 at this end, which can be located on the surface of the other common end, or at the outer edge of the other common end, and connected to the side edge, so as to realize the flow of current at the end of the heating sheet 2, and the other second electrode 4 is located on the surface of all the heating sheets 2, so as to realize the flow of current on the surface of the heating sheet 2, and the first electrode 3 and the second electrode 4 are in contact with the end and surface of the heating sheet 2, so as to realize uniform heating of all parts of the heating sheet 2. In addition, the first electrode 3 and the second electrode 4 are electrically connected to the rectifier through the first conductor 5 and the second conductor 6 respectively.

[0053] See also Figure 2 and Figure 3 In a preferred embodiment, the distance H between the free end of the second electrode 4 and the first conductor 5 is 2mm-10mm; or the distance h between the free end of the first electrode 3 and the second conductor 6 is 2mm-10mm. This further avoids the free end of the second electrode 4 and the free end of the first electrode 3 from being too far away from the relative conductor, which may cause uneven heating in some areas of the heating sheet 2, or the spacing is too small, which may cause local hot spots, and further effectively ensures that all positions on the surface of the heating sheet 2 are heated evenly.

[0054] See also Figure 2 and Figure 3In a preferred embodiment, the first electrode 3 and the second electrode 4 are rectangular and arranged in parallel, and the lateral spacing between the second electrode 4 and the first electrode 3 is equal, and the lateral spacing between the second electrode 4 and the first electrode 3 is 3cm to 15cm. Through the above structure, the heating sheet 2 can be divided into a plurality of equal parts, and the heating sheet 2 can be evenly divided into a plurality of equal parts to further make the heating sheet 2 evenly heated. In this embodiment, two first electrodes 3 and two second electrodes 4 are used. Through the alternating arrangement of the two first electrodes 3 and the two second electrodes 4, a single heating sheet 2 can be evenly divided into three equal parts, so that the heating sheet 2 can be evenly heated. In addition, by setting the lateral spacing between the second electrode 4 and the first electrode 3 to 3cm to 15cm, it is possible to arrange as few electrodes as possible while ensuring that the heating sheet 2 is evenly heated, so as to simplify the wiring of the heating component, make its structure simpler, and make the wiring more regular.

[0055] In a preferred embodiment, see Figure 2 and Figure 3 , the first electrode 3 and the second electrode 4 have two or more respectively; a first conductor 5 and a second conductor 6 are arranged on the substrate 1, all the first electrodes 3 are connected as a whole through the first conductor 5, and all the first electrodes 3 are arranged at intervals on the first conductor 5; all the second electrodes 4 are connected as a whole through the second conductor 6, and all the second electrodes 4 are arranged at intervals on the second conductor 6, and electrode contacts 7 for electrically connecting to a power source are respectively arranged on the first conductor 5 and the second conductor 6, and the electrode contact 7 is an elastic member and is in a compressed state under force when in working state. The electrode contact 7 can be a spring or a metal spring, etc. The electrode contact 7 is in a stressed and compressed state when in working state. At this time, the electrode contact 7 has a pre-tightening force. When working in a working environment with large temperature changes, ordinary electrode contacts are easily affected by thermal expansion and contraction, and cracks occur at the connection position of the conductive plate connected to it (the conductive plate is used to connect to an external power supply), affecting the conductive effect. However, when the electrode contact 7 is used, since the electrode contact 7 has a pre-tightening force, it can always ensure that the electrode contact 7 is in good contact with the corresponding conductive plate to ensure the conductive effect.

[0056] The present invention provides two specific implementations of the positional relationship between the first electrode 3, the second electrode 4 and the heating sheet 2. The first one is shown in FIG. Figure 2 and Figure 3 as well as Figure 6The second electrode 4 and the first electrode 3 connect the heating sheet 2 and the upper surface of the substrate 1, the heating sheet 2 is clamped between the second electrode 4, the first electrode 3 and the substrate 1, the heating sheet 2 is formed by curing the conductive material continuously coated on the substrate 1, the second electrode 4 and the first electrode 3 are formed by curing the conductive material continuously coated on the substrate 1 and the heating sheet 2, at the position where the heating sheet 2 is provided, the second electrode 4 and the first electrode 3 are coated on the heating sheet 2, and at the gap between the heating sheets 2, the second electrode 4 and the first electrode 3 are coated on the substrate 1; by first laying the heating sheet 2 on the surface of the substrate 1 to make it flat, and then arranging the first electrode 3 and the second electrode 4 on the upper surface of the heating sheet 2, the problem of uneven heating caused by the uneven heating sheet 2 can be avoided; the second method, see Figure 7 , the second electrode 4 and the first electrode 3 connect the upper surface of the heating sheet 2 and the lower surface of the substrate 1, the second electrode 4 and the first electrode 3 are clamped between the heating sheet 2 and the substrate 1, the second electrode 4 and the first electrode 3 are formed by curing the conductive material continuously coated on the substrate 1, the heating sheet 2 is formed by curing the conductive material continuously coated on the substrate 1, the second electrode 4 and the first electrode 3, the heating sheet 2 is coated on the second electrode 4 and the first electrode 3 at the position where the second electrode 4 and the first electrode 3 are provided, and the heating sheet 2 is coated on the substrate 1 at the gap between the second electrode 4 and the first electrode 3. In the above two methods, the first electrode 3, the second electrode 4 and the heating sheet 2 can be connected to the substrate 1 by gluing, or by a sintering process.

[0057] In a preferred embodiment, the substrate 1 is made of insulating ceramic material, such as microcrystalline ceramic, the heating sheet 2 contains graphene material, and the heating sheet 2, the first electrode 3 and the second electrode 4 are all formed by curing the continuously coated conductive material. The heating sheet 2 contains graphene material, mainly because graphene has the advantages of low resistivity, high thermal conductivity and conductivity speed, so the heating speed is fast, and graphene also has the advantages of high efficiency and energy saving, so the loss is low, and graphene can be turned on at a low voltage of human safety voltage, so there is no safety hazard of electric shock during use. The heating sheet 2 made of graphene material and the flexible microcontroller as the control unit can realize the cascading of multiple systems, realize heating of any structural mode, reduce costs, and reduce losses.

[0058] In a preferred embodiment, see Figure 2-5 The heating sheet 2 is rectangular, the lengths and widths of the multiple heating sheets 2 are equal and they are arranged in parallel, the wide sides of the multiple heating sheets 2 are flush, the first electrode 3 and the second electrode 4 extend along the width direction of the heating sheet 2 and connect each heating sheet 2, the first electrode 3 and the second electrode 4 are also rectangular, and the length direction of the first electrode 3 and the second electrode 4 is perpendicular to the length direction of the heating sheet 2.

[0059] In this embodiment, the rectifier can be a rectifier with a dual output structure or a rectifier with a single output structure. The so-called single output structure rectifier means that only one load can be connected, while the dual output structure rectifier can be connected to two loads at the same time and work independently of each other. The difference between the dual output structure rectifier and the single output structure rectifier is that the dual output structure rectifier integrates the internal modules of the two single output structure rectifiers into one machine, and the dual output structure rectifier can also provide DC power for only one load. It is used according to the actual situation. In this embodiment, the dual output structure rectifier is used as an example to describe the synchronous module installation structure. In the preferred embodiment, see Figure 8 and 9 The rectifier includes a rectifier mounting housing 8, a heat dissipation assembly is arranged in the rectifier mounting housing 8, a synchronization module assembly is connected to the heat dissipation assembly, and a transformer assembly is electrically connected to the synchronization module assembly; see Figure 10-11The synchronous module assembly includes a PCB board 9, which is an intelligent drive and protection circuit board. The circuit structure on the PCB board 9 and the functions it realizes are all prior arts, and the functions and circuit structure of the PCB board 9 itself are not the inventive points of the present invention; the synchronous module assembly also includes a conductive base plate 10 and a conductive strip 11. The PCB board 9 connects the conductive base plate 10 and the conductive strip 11. The connection method is mainly that the PCB board 9 is detachably connected to the conductive base plate 10 and the conductive strip 11 at the same time through fasteners; the synchronous module assembly is connected to the heat dissipation assembly through the conductive base plate 10 and the conductive strip 11, and an insulating layer 12 is provided between the conductive base plate 10 and the heat dissipation assembly and between the conductive strip 11 and the heat dissipation assembly to isolate the conductive; the synchronous module assembly is formed into a whole by the action of the conductive base plate 10 and the conductive strip 11, so as to facilitate the installation of the synchronous module assembly in the rectifier, and then the conductive strip 11 and the conductive base plate 10 of the synchronous module assembly are connected to the heat dissipation assembly. An insulating layer 12 is provided between the thermal components to isolate the conductive material, so as to prevent the current on the synchronous module component from being directed to the heat dissipation component. When the heat dissipation component adopts water cooling, it can effectively prevent the minerals in the water from being adsorbed on the pipe wall or the pipe mouth, and prevent the minerals from occupying the internal space of the pipe, thereby ensuring smooth water flow and thus ensuring effective heat dissipation of the heat dissipation component. In addition, the effective heat dissipation of the rectifier can reduce the loss of energy consumption. Specifically, there are two conductive strips 11, which are respectively arranged on both sides of the conductive bottom plate 10, and each conductive strip 11 corresponds to a PCB board 9. The insulating layer 12 can be a whole piece, and a whole piece of insulating layer 12 covers the surface of two conductive strips 11 and the conductive bottom plate 10 at the same time, or the number of insulating layers 12 is consistent with the number of conductive strips 11 and the conductive bottom plate 10. For example, when the total number of the conductive bottom plate 10 and the conductive strips 11 is three, the number of insulating layers 12 is also three, and a layer of insulating layer 12 is respectively arranged on the surface of each conductive strip 11 and the surface of the conductive bottom plate 10. The synchronous module assembly forms a whole through the action of the conductive base plate 10 and the conductive strip 11, so as to facilitate the installation of the synchronous module in the rectifier. Then, an insulating layer 12 is provided between the conductive strip 11 of the synchronous module and the conductive base plate 10 and the heat dissipation assembly to prevent the current on the synchronous module from being guided to the heat dissipation assembly. When the heat dissipation assembly adopts water cooling, it can effectively prevent the minerals in the water from being adsorbed on the pipe wall or the pipe mouth of the pipe, and prevent the minerals from occupying the internal space of the pipe, thereby ensuring smooth water flow and ensuring effective heat dissipation of the heat dissipation assembly. Since the transformer assembly is electrically connected to the synchronous module assembly through the flexible conductive member 13, even if it shakes during transportation, the flexible connection of the flexible conductive member 13 will not pull the connection point, and then the circuit board will not be pulled, thereby preventing the power tube on the circuit board from being pulled and damaged.

[0060] In this embodiment, see Fig. 9 as well as Figure 12-13The transformer assembly includes a core skeleton, one end of which is connected to the conductive bottom plate 10 of the synchronous module assembly, a magnetic core 14 is arranged on the core skeleton, an output copper plate is also connected to the other end of the core skeleton, a flexible conductive member 13 is connected to the output copper plate, and the flexible conductive member 13 is also connected to the conductive strip 11 of the synchronous module assembly. The flexible conductive member 13 is a soft copper strip, and the soft copper strip includes a first connecting end arranged horizontally and a second connecting end arranged horizontally, the first connecting end and the second connecting end are connected through an intermediate connecting portion, the intermediate connecting portion of the soft copper strip passes through the through hole 15 in the middle of the core skeleton and the inner hole of the magnetic core 14, the first connecting end of the soft copper strip is connected to the output copper plate, and the second connecting end is connected to the conductive strip 11 of the synchronous module assembly; the intermediate connecting portion can be in the shape of a letter, such as Fig.12 and Fig.13 As shown, it is convenient to pass through the through hole 15 in the middle of the magnetic core skeleton and the inner hole of the magnetic core 14 to avoid interference, and at the same time, the transformer as a whole is more beautiful; of course, the middle connecting portion can also be an arc, as long as the arc-shaped middle connecting portion can pass through the through hole 15 in the middle of the magnetic core skeleton and the inner hole of the magnetic core 14 without interfering with them. The middle connecting portion can also be formed by setting the first section and the second section in an angled state, such as Fig.10 As shown. The soft copper tape has good flexible connection performance and heat dissipation performance, that is: the soft copper tape is made of copper, which is a metal with good flexibility and can be bent multiple times without breaking, which enables the soft copper tape to adapt to various installation conditions and movement states. Copper is also a metal with excellent thermal conductivity and can quickly transfer heat; in addition, the soft copper tape is flat in shape, which increases the area in contact with the air, which is not only conducive to heat dissipation, but also easier to bend into the required shape, and can easily cope with the needs of complex wire connections and circuit designs; therefore, the transformer assembly is flexibly electrically connected to the synchronization module through the soft copper tape, which not only avoids direct or indirect damage to the power tube on the circuit board due to pulling at the connection, but also improves the heat dissipation performance and avoids damage to the power tube due to overheating.

[0061] In this embodiment, the insulating layer 12 is made of ceramic. When ceramic is used as the insulating layer 12, it has high mechanical strength and high thermal conductivity, which means that it can effectively conduct heat, which is beneficial to the heat dissipation of the synchronous module assembly and the transformer assembly; the conductive bar 11 is made of copper; the conductive base plate 10 is made of aluminum. Aluminum as a conductive material is cost-effective, light in weight, and has good conductivity and corrosion resistance.

[0062] In a preferred embodiment, a first protrusion 16 is provided on the surface of one end of the conductive bottom plate 10, and a first output copper bar 17 is connected to the first protrusion 16; a second protrusion 18 is provided on a part of the upper surface of the conductive bar 11. It can be understood that the second protrusion 18 only covers a part of the upper surface of the conductive bar 11, so that the cross section of the conductive bar 11 in its width direction forms an L shape, and the second protrusion 18 is indirectly connected to the second output copper bar 19. The part of the upper surface of the two conductive bars 11 without the second protrusion 18 and the part of the surface of the conductive bottom plate 10 without the first protrusion 16 form a mounting groove, and two PCB boards 9 are installed in the mounting groove. Through the arrangement of the above-mentioned structure, the PCB board 9 installed in the mounting groove and the electronic components on the PCB board 9 can be prevented from being damaged by being touched. In addition, the first output copper bar 17 and the second output copper bar 19 are directly electrically connected to the positive and negative ends (also called anode and cathode) of the load, so that the load receives the required stable current or stable voltage.

[0063] In this embodiment, see Figure 12-14 The magnetic core skeleton includes a left skeleton 20 and a right skeleton 21; wherein the left skeleton 20 includes a mounting protrusion 22, the shape of which is adapted to the shape of the inner hole of the magnetic core 14 to adapt to the installation of the magnetic core 14; a first through hole 23 is provided on the mounting protrusion 22, the first through hole 23 is provided along the length direction of the mounting protrusion 22, and passes through both ends of the length of the mounting protrusion 22, and the structure of the right skeleton 21 is the same as that of the left skeleton 20; when the left skeleton 20 and the right skeleton 21 are docked, the mounting protrusion 22 on the left skeleton 20 is docked with the mounting protrusion 22 on the right skeleton 21 to form a magnetic core mounting seat, and the first through hole 23 on the left skeleton 20 is connected with the first through hole 23 on the right skeleton 21 to form a through hole 15 for the flexible conductive member 13 to pass through.

[0064] In a preferred embodiment, see Fig.14, the top of the left frame 20 and the top of the right frame 21 are respectively provided with first connecting parts 24 extending toward each other, and the bottom of the left frame 20 and the bottom of the right frame 21 are respectively provided with second connecting parts 25 extending toward each other, and there is a spacing between the first connecting part 24 and the mounting protrusion 22 and between the second connecting part 25 and the mounting protrusion 22. When the left frame 20 and the right frame 21 are docked, the first connecting part 24 on the left frame 20, the first connecting part 24 on the right frame 21, the mounting protrusion 22 on the left frame 20 and the mounting protrusion 22 on the right frame 21 form a first accommodating space 26, and the second connecting part 25 on the left frame 20, the second connecting part 25 on the right frame 21, the mounting protrusion 22 on the left frame 20 and the mounting protrusion 22 on the right frame 21 form a second accommodating space 27; the magnetic core 14 is annular, the inner hole of the magnetic core 14 is sleeved on the magnetic core mounting seat, and part of the magnetic core 14 passes through the first accommodating space 26 and the second accommodating space 27. In addition, horizontally outwardly extending mounting portions 28 are respectively provided at both ends of the first connecting portion 24 and both ends of the second connecting portion 25. The mounting portion 28 on the first connecting portion 24 of the left skeleton 20 and the mounting portion 28 on the first connecting portion 24 of the right skeleton 21 are connected to the output copper plate through fasteners, and the mounting portion 28 on the second connecting portion 25 of the left skeleton 20 and the mounting portion 28 on the second connecting portion 25 of the right skeleton 21 are connected to the conductive base plate 10 of the synchronization module assembly through fasteners.

[0065] In a preferred embodiment, see Fig.14 A first positioning assembly is provided between the first connection part 24 of the left frame 20 and the first connection part 24 of the right frame 21, and a second positioning assembly is provided between the second connection part 25 of the left frame 20 and the second connection part 25 of the right frame 21. The first positioning assembly includes a first positioning groove 29 and a first positioning column 30, and the first positioning groove 29 and the first positioning column 30 cooperate to realize the quick docking of the first connection part 24 of the left frame 20 and the right frame 21, and the first positioning groove 29 and the first positioning column 30 can be arbitrarily set on the first connection part 24 of the left frame 20 and the right frame 21 respectively; the second positioning assembly includes a second positioning groove 31 and a second positioning column 32, and the second positioning groove 31 and the second positioning column 32 cooperate to realize the quick docking of the second connection part 25 of the left frame 20 and the right frame 21, and the second positioning groove 31 and the second positioning column 32 can be arbitrarily set on the second connection part 25 of the left frame 20 and the right frame 21 respectively.

[0066] In this embodiment, see Figure 12-13The output copper plate includes a first connecting plate 33, a second connecting plate 34 is arranged on one side of the first connecting plate 33, and a third connecting plate 35 is arranged on one side of the second connecting plate 34. The first connecting plate 33 and the second connecting plate 34 are arranged at an angle, and the second connecting plate 34 and the third connecting plate 35 are arranged at an angle, and the first connecting plate 33 and the third connecting plate 35 are parallel. It can be understood that the angle between the first connecting plate 33 and the second connecting plate 34 can be 90°, the connection between the first connecting plate 33 and the second connecting plate 34 is rounded, and the second connecting plate 34 and The angle of the third connecting plate 35 can also be 90°, and the connection between the second connecting plate 34 and the third connecting plate 35 is rounded. Through the above structure, the output copper plate can be connected to the first output copper bar 17 and can be bent toward the direction of the synchronous module assembly, so that the overall module structure formed by the synchronous module assembly and the transformer assembly is compact; one end of the flexible conductive member 13 is connected to the first connecting plate 33, the third connecting plate 35 is connected to the first output copper bar 17, and the second output copper bar 19 and the first output copper bar 17 are respectively electrically connected to the positive and negative poles of the load, so as to realize the load power supply. The rectifier is electrically connected to the first conductor 5 and the second conductor 6 of the heating assembly through the first output copper bar 17 and the second output copper bar 19 respectively.

[0067] In this embodiment, see Fig. 9 , a current sensor 36 and a reactor 37 are provided on the second output copper bar 19. Among them, the reactor 37 can limit the sudden change of current when used in the rectifier, thereby reducing the current fluctuation and voltage spike, which helps to stabilize the DC output, especially when the power supply or load changes, it can maintain the continuity and stability of the current, while the current sensor 36 can monitor and adjust the current passing through the rectifier, provide real-time current readings, and ensure that the current remains within a safe and predetermined operating range. In addition, the current sensor 36 can also detect abnormal conditions such as short circuits or overloads, thereby triggering protective measures to prevent equipment damage; through the combined use of the current sensor 36 and the reactor 37, not only can the overall performance and reliability of the system be improved, but also the equipment can be protected from potential electrical hazards.

[0068] In a preferred embodiment, see Figure 8-14The heat dissipation assembly includes a heat dissipation baffle 38, and the synchronous module assembly is connected to the heat dissipation baffle 38 through an insulating layer 12. Since the rectifier of the dual output structure is adopted in this embodiment, there are two sets of synchronous module assemblies, and the two sets of synchronous module assemblies are arranged on the two side walls of the heat dissipation baffle 38; a U-shaped water channel is arranged inside the heat dissipation baffle 38, and the two ends of the U-shaped water channel are penetrated by the wall surface of the heat dissipation baffle 38, one port of the U-shaped water channel is a water inlet, and the other port is a water outlet, and a water pipe joint 39 is arranged on the water inlet and the water outlet respectively, and a water pipe sleeve 40 is arranged on the water pipe joint 39, and water circulation is realized through the U-shaped water channel, which is convenient for dissipating heat inside the rectifier and taking away heat in time. In addition, a heat dissipation hole 54 is also arranged on the rectifier mounting shell 8, so that the external air can be connected with the inside of the rectifier to further dissipate the heat inside the rectifier.

[0069] An oven described in the present invention includes a box body 41 and the above-mentioned temperature control system; the heating component and the temperature detection module in the temperature control system are arranged in the box body 41, and the control unit and the rectifier in the temperature control system are arranged outside the box body 41.

[0070] See also Figure 2 , 3 15, in a preferred embodiment, a first conductive plate 42 and a second conductive plate 43 are provided in the box 41, an electrode contact 7 provided on the first conductor 5 is connected to the first conductive plate 42, and an electrode contact 7 provided on the second conductor 6 is connected to the second conductive plate 43, and a negative electrode and a positive electrode are externally connected through the first conductive plate 42 and the second conductive plate 43 respectively, so that the heating component is energized; when there are multiple groups of heating components in the box 41, the multiple groups of heating components can be arranged separately and spaced apart, that is, the substrates 1 in all the heating components are not connected, or the substrates 1 in the multiple groups of heating components can be connected to connect all the heating components as a whole; since each group of heating components has an electrode contact 7 connected to the first conductor 5 and an electrode contact 7 connected to the second conductor 6, and then the first conductive plate 42 and the second conductive plate 43 are simultaneously connected to the electrode contacts 7 in the multiple groups of heating components to achieve synchronous conduction of the multiple groups of heating components, the above structure can further simplify the wiring structure inside the oven. In this embodiment, the first conductive plate 42 and the second conductive plate 43 are copper bars.

[0071] See also Fig.15 and Fig.16In this embodiment, a pair of mounting base plates 44 are provided in the box body 41, and the two mounting base plates 44 are arranged at intervals. The two ends of the heating assembly are arranged on the mounting base plates 44 on the corresponding sides, and are pressed against the mounting base plates 44 through the mounting top plates 45; the first conductive plate 42 and the second conductive plate 43 are respectively connected to the mounting base plates 44 on the corresponding sides through the connecting components 55. Specifically, the number of mounting top plates 45 matches the number of heating assemblies, and the two ends of each group of heating assemblies are respectively pressed against the mounting base plates 44 through the mounting top plates 45 at the corresponding ends, and the mounting top plates 45 and the mounting base plates 44 are detachably connected through fasteners such as bolts, screws, and latches; in addition, the width of the mounting top plates 45 is smaller than the width of the mounting base plates 44. Since the mounting top plates 45 and the mounting base plates 44 are arranged and connected in the vertical direction, in order to enable the electrode contact members 7 and the connecting components 55 on the heating assembly to be connected to the corresponding conductive plates in the vertical direction, the mounting top plates 45 are connected to the mounting base plates 44 in a manner that allows the electrode contact members 7 and the connecting components 55 on the heating assembly to be connected to the corresponding conductive plates in the vertical direction. The width is smaller than the width of the mounting base plate 44 to provide a vertical avoidance space for the electrode contact 7 and the connecting assembly 55, so that the electrode contact 7 and the connecting assembly 55 can be smoothly connected to the corresponding conductive plate; the connecting assembly 55 has multiple groups, which are arranged at intervals along the length direction of the first conductive plate 42 or the second conductive plate 43, and the connecting assembly 55 includes a support seat, which is connected to the mounting base plate 44 on the corresponding side, and the first conductive plate 42 or the second conductive plate 43 is supported on the support seat on the corresponding side and is detachably connected to the support seat by fasteners such as bolts, screws, and latches. In addition, in this embodiment, a pair of spaced and relatively arranged support members 46 are provided in the box body 41, and the mounting base plate 44 is connected to the support member 46 on the corresponding side; there is a spacing between the support member 46 and one of the inner walls of the box body 41, which is convenient for the disassembly and assembly of the support member 46.

[0072] In a preferred embodiment, see Fig.15 , a drying object passing structure is provided at both ends of the box body 41. The drying object passes through the drying object passing structure at one end and enters the box body 41. After crossing the heating component, the drying object passes through the drying object passing structure at the other end and passes out of the box body 41. The drying object passing structure is set according to the shape of the drying object. When the drying object is a long strip such as a rope, refer to Fig.15 The structure for passing the objects to be dried includes a groove 47 arranged on the box body 41, a first dividing plate 48 and a second dividing plate 49 are arranged in the groove 47 at intervals, the second dividing plate 49 is arranged on the inner side of the first dividing plate 48, and a plurality of dividing grooves 50 are respectively arranged on the first dividing plate 48 and the second dividing plate 49, and the dividing grooves 50 on the two are arranged oppositely to allow the rope to pass through the dividing grooves 50. By arranging the first dividing plate 48 and the second dividing plate 49, contact or entanglement between adjacent ropes can be avoided, thereby ensuring the drying effect; when the objects to be dried are flat objects such as paper, it is only necessary to place Fig.15The first dividing plate 48 and the second dividing plate 49 in the box can be taken out. When it is necessary to carry out continuous dynamic drying of long strips or flat objects, the objects to be dried need to be rolled up and placed on the unwinding mechanism outside the box body 41, and the free end of the objects to be dried needs to be pulled out and passed through the inside of the box body 41 and connected to the rewinding mechanism. Through the joint action of the unwinding mechanism and the rewinding mechanism, dynamic drying of the objects to be dried is achieved. The rewinding mechanism and the unwinding mechanism are prior art and do not belong to the invention content of the present invention. When static drying is required, it is only necessary to set a storage part, such as a storage board or a storage table, in the box body 41, and directly place the objects to be dried on the storage part and dry them.

[0073] In this embodiment, see Fig.15 A box cover 51 is hinged at the open end of the box body 41. When drying, the box cover 51 needs to be closed on the box body 41 to prevent heat loss. A telescopic rod 52 is provided between the box body 41 and the box cover 51. One end of the telescopic rod 52 is hinged on the box body 41, and the other end is hinged on the box cover 51. When the box cover 51 is opened, it is supported by the telescopic rod 52 to facilitate maintenance inside the oven or placement of dried objects. The telescopic rod 52 can be an electric telescopic rod 52 or a pneumatic telescopic rod, both of which are prior arts. A handle 53 is also provided on the box cover 51 to facilitate operators to open or close the cover.

[0074] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A temperature control system, characterized in that: It includes a control unit, a temperature detection module, a rectifier and a heating component; The temperature detection module is used to collect the temperature of the heating component in real time, and feed back the collected temperature data to the control unit in real time; The control unit is used to receive the temperature data fed back by the temperature detection module, and to control the current and voltage output by the rectifier in real time according to the temperature data; The rectifier is used to receive instructions from the control unit and output current and voltage to the heating component; The heating component heats up, cools down or maintains a constant temperature according to the magnitude of the current and voltage output by the rectifier to reach or maintain a preset temperature; the heating component includes a substrate, a plurality of heating sheets, at least one first electrode and at least one second electrode, the plurality of heating sheets are attached to the substrate and arranged at intervals, the second electrode and the first electrode are also arranged on the substrate, each heating sheet is electrically connected to at least one first electrode and at least one second electrode; the first electrode and the second electrode are both electrically connected to the rectifier.

2. The temperature control system according to claim 1, characterized in that: The plurality of heating sheets are arranged at intervals along a first direction, the first electrode extends along the first direction and is electrically connected to part or all of the heating sheets, and the second electrode extends along the first direction and is electrically connected to part or all of the heating sheets.

3. The temperature control system according to claim 2, characterized in that: There are two or more first electrodes and second electrodes respectively; all first electrodes are connected as a whole, all second electrodes are connected as a whole, the multiple first electrodes and multiple second electrodes are arranged alternately, and each first electrode and second electrode is electrically connected to all heating sheets.

4. The temperature control system according to claim 3, characterized in that: A first conductor is disposed at the first end of the substrate, and a second conductor is disposed at the second end of the substrate. In the first direction, all the heating sheets are located between the first conductor and the second conductor, all the first electrodes are connected as a whole through the first conductor, and all the first electrodes are arranged at intervals on the first conductor; All the second electrodes are connected as a whole through the second conductor, and all the second electrodes are arranged at intervals on the second conductor; the first electrode extends from the first end to the second end of the substrate, and there is a gap between the free ends of all the first electrodes and the second conductor; the first electrode extends from the second end to the first end of the substrate, and there is a gap between the free ends of all the second electrodes and the first conductor; the first electrode and the second electrode are electrically connected to the rectifier through the first conductor and the second conductor respectively; Alternatively, the first electrode and the second electrode are rectangular and arranged in parallel, the lateral distance between the second electrode and the first electrode is equal, and the lateral distance between the second electrode and the first electrode is 3 cm to 15 cm.

5. The temperature control system according to claim 2, characterized in that: The first electrodes and the second electrodes have two or more respectively; the first conductor and the second conductor are arranged on the substrate, all the first electrodes are connected as a whole through the first conductor, and all the first electrodes are arranged at intervals on the first conductor; All second electrodes are connected as a whole through the second conductor, and all second electrodes are arranged at intervals on the second conductor. Electrode contacts for electrically connecting to a power source are respectively provided on the first conductor and the second conductor. The electrode contacts are elastic members and are in a compressed state when in working state.

6. The temperature control system according to any one of claims 1 to 5, characterized in that: The second electrode and the first electrode are connected to the upper surface of the heating sheet and the substrate, the heating sheet is sandwiched between the second electrode, the first electrode and the substrate, the heating sheet is formed by curing the conductive material continuously coated on the substrate, the second electrode and the first electrode are formed by curing the conductive material continuously coated on the substrate and the heating sheet, at the position where the heating sheet is provided, the second electrode and the first electrode are coated on the heating sheet, and at the gap between the heating sheets, the second electrode and the first electrode are coated on the substrate; Alternatively, the second electrode and the first electrode connect the upper surface of the heating sheet and the lower surface of the substrate, the second electrode and the first electrode are sandwiched between the heating sheet and the substrate, the second electrode and the first electrode are formed by curing the conductive material continuously coated on the substrate, the heating sheet is formed by curing the conductive material continuously coated on the substrate, the second electrode and the first electrode, the heating sheet is coated on the second electrode and the first electrode at the position where the second electrode and the first electrode are provided, and the heating sheet is coated on the substrate at the gap between the second electrode and the first electrode; Alternatively, the substrate is made of insulating ceramic material, the heating sheet contains graphene material, and the heating sheet, the first electrode and the second electrode are all formed by curing a continuously coated conductive material; Alternatively, the heating sheet is rectangular, the lengths and widths of the multiple heating sheets are equal and they are arranged in parallel, the wide sides of the multiple heating sheets are flush, the first electrode and the second electrode extend along the width direction of the heating sheet and connect each of the heating sheets, the first electrode and the second electrode are also rectangular, and the length direction of the first electrode and the second electrode is perpendicular to the length direction of the heating sheet.

7. The temperature control system according to claim 1, characterized in that: The rectifier includes a rectifier installation shell, a heat dissipation component is arranged in the rectifier installation shell, a synchronization module component is connected to the heat dissipation component, and a transformer component is electrically connected to the synchronization module component; the synchronization module component includes a PCB board, a conductive bottom plate and a conductive strip, the PCB board connects the conductive bottom plate and the conductive strip, the synchronization module component is connected to the heat dissipation component through the conductive bottom plate and the conductive strip, and an insulating layer is arranged between the conductive bottom plate and the heat dissipation component and between the conductive strip and the heat dissipation component to isolate the conductivity; the transformer component includes a magnetic core skeleton, one end of the magnetic core skeleton is connected to the conductive bottom plate, a magnetic core is arranged on the magnetic core skeleton, an output copper plate is also connected to the other end of the magnetic core skeleton, a flexible conductive member is connected to the output copper plate, and the flexible conductive member is also connected to the conductive strip of the synchronization module assembly.

8. The temperature control system according to claim 7, characterized in that: There are two conductive strips, which are respectively arranged on both sides of the conductive bottom plate; the insulating layer covers the two conductive strips and the surface of the conductive bottom plate at the same time, or the number of insulating layers is consistent with the number of conductive strips and the conductive bottom plate, and one insulating layer is respectively arranged on the surface of each conductive strip and the surface of the conductive bottom plate; Alternatively, the magnetic core skeleton comprises a left skeleton and a right skeleton; wherein the left skeleton comprises a mounting protrusion, the mounting protrusion is provided with a first through hole, and the structure of the right skeleton is the same as that of the left skeleton; when the left skeleton and the right skeleton are docked, the mounting protrusion on the left skeleton is docked with the mounting protrusion on the right skeleton to form a magnetic core mounting seat, and the first through hole on the left skeleton is connected with the first through hole on the right skeleton to form a through hole for the flexible conductive member to pass through; Alternatively, the flexible conductive member is a soft copper belt, the soft copper belt comprises a first connecting end and a second connecting end arranged horizontally, the first connecting end and the second connecting end are connected via an intermediate connecting portion, the intermediate connecting portion of the soft copper belt passes through a through hole in the middle of the magnetic core skeleton and an inner hole of the magnetic core, the first connecting end of the soft copper belt is connected to the output copper plate, and the second connecting end is connected to the synchronization module assembly; Alternatively, the output copper plate includes a first connecting plate, a second connecting plate is arranged on one side edge of the first connecting plate, a third connecting plate is arranged on one side edge of the second connecting plate, the first connecting plate and the second connecting plate are arranged at an angle, the second connecting plate and the third connecting plate are arranged at an angle, and the first connecting plate is parallel to the third connecting plate; one end of the flexible conductive member is connected to the first connecting plate, and the third connecting plate is connected to the first output copper busbar.

9. The temperature control system according to claim 1, characterized in that: The control unit performs PID calculation based on the received temperature data, and controls the current and voltage output by the rectifier according to the PID calculation results. After the temperature of the heating component reaches the preset temperature, the control unit controls the rectifier to reduce the power output to keep the heating component at a constant preset temperature.

10. A drying oven, characterized in that: It comprises a box and a temperature control system as described in any one of claims 1 to 9; the heating component and the temperature detection module in the temperature control system are arranged in the box, and the control unit and the rectifier in the temperature control system are arranged outside the box.

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