A heating element and an outdoor power supply

Abstract

This invention discloses a heating element and an outdoor power supply, relating to the field of heating element technology. The heating element includes a heating body and a carrier for placing the heating body. The carrier has a first wiring area and a second wiring area. A positive terminal and a negative terminal are disposed in the first wiring area, and the heating body is disposed in the second wiring area. The positive terminal is connected to one end of the heating body via a first trace, and the negative terminal is connected to the other end of the heating body via a second trace. The first and second wiring areas are arranged along a first direction. The first trace extends from the positive terminal along a second direction and connects to one end of the heating body. The second trace extends from the negative terminal along the opposite direction of the second direction and connects to the other end of the heating body. This invention aims to solve the problem that existing heating elements are prone to damage to the wires in the middle area due to finger pressure when held and handled.

Description

Technical Field

[0001] This invention relates to the field of heating element technology, and in particular to a heating element and an outdoor power supply. Background Technology

[0002] To address the impact of low temperatures on battery performance, heating elements are widely used in battery systems. The main function of these heating elements is to raise the battery temperature by generating heat, allowing the electrolyte to regain its normal fluidity and thus improving the battery's charge and discharge performance. This ensures that the vehicle maintains stable battery performance even in low-temperature environments, guaranteeing unaffected starting and driving.

[0003] The heating elements of a heating element are typically arranged in the form of circuits on an insulating layer, forming a resistive network. The heating elements are connected to a power source through positive and negative terminals. When the current flows through these resistive networks, the Joule heating effect is generated, thus converting electrical energy into heat energy.

[0004] However, the heating elements of existing heating pads used for connecting the positive and negative terminals are generally arranged in a straight line in the middle area of ​​the heating pad. This increases the risk of the heating elements being crushed to some extent, because when holding the device, the pressure of the fingers is easily applied to the middle area of ​​the heating pad, causing damage to the heating elements in the middle area. Summary of the Invention

[0005] The main objective of this invention is to provide a heating element and an outdoor power supply, which aims to solve the problem that when using existing heating elements by hand, the pressure from fingers can easily damage the heating element in the middle area of ​​the heating element.

[0006] To achieve the above objectives, the present invention provides a heating element, comprising a heating element and a carrier for placing the heating element, wherein the heating element is arranged on the carrier in the form of circuits, and the heating circuit includes:

[0007] Positive terminal;

[0008] Negative terminal;

[0009] The carrier has a first wiring area and a second wiring area. The positive terminal and the negative terminal are disposed in the first wiring area, and the heating element is disposed in the second wiring area. The positive terminal is connected to one end of the heating element via a first trace, and the negative terminal is connected to the other end of the heating element via a second trace.

[0010] The first wiring area and the second wiring area are arranged along a first direction. The first wiring extends from the positive terminal along a second direction and is connected to one end of the heating element. The second wiring extends from the negative terminal along the opposite direction of the second direction and is connected to the other end of the heating element. The first direction is the width direction of the carrier, and the second direction is the length direction of the carrier.

[0011] In one embodiment, the first trace includes a first segment and a second segment; the first end of the first segment of the first trace is connected to the positive electrode access terminal, the second end of the first segment of the first trace extends through the positive electrode access terminal along a second direction and is connected to the first end of the second segment of the first trace, and the second end of the second segment of the first trace is connected to one end of the heating element.

[0012] In one embodiment, the second trace includes a first segment and a second segment; the first end of the first segment of the second trace is connected to the negative electrode input terminal, the second end of the first segment of the second trace extends through the negative electrode input terminal along a second direction and is connected to the first end of the second segment of the second trace, and the second end of the second segment of the second trace is connected to one end of the heating element;

[0013] The second segment of the second trace includes at least one S-shaped curve.

[0014] In one embodiment, the S-shaped curve includes any one of a stepped curve, a wavy curve, or a spiral curve.

[0015] In one embodiment, the first trace and the second trace have opposite outgoing directions.

[0016] In one embodiment, the thickness of both the first trace and the second trace is greater than the thickness of the heating element.

[0017] In one embodiment, the middle position of the second wiring area is the first set point, and the heating element is arranged around the first set point of the second wiring area, wherein the shape of the surrounding is either a square spiral or a circular spiral.

[0018] The present invention also proposes an outdoor power supply, comprising the heating element described in any of the above claims.

[0019] The heating element of this invention includes a heating element and a carrier. The carrier has a first wiring area with a positive terminal and a negative terminal respectively, and a second wiring area with the heating element. The positive terminal is connected to one end of the heating element via the first wiring, and the negative terminal is connected to the other end of the heating element via the second wiring. Since the first wiring is arranged along a second direction, and the second wiring is arranged in the opposite direction of the second direction (the length direction of the carrier), both the first and second wirings are offset from the middle area of ​​the carrier. With this design, in practical applications, when a user holds the heating element, because the first and second wirings used for connecting the positive and negative terminals are offset from the middle area of ​​the heating element, the first and second wirings will not be damaged by the pressure of fingers on the middle area of ​​the heating element. Therefore, in practical applications, the heating element is less likely to be broken or snapped by fingers when held, thereby improving the overall durability and reliability of the heating element. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the heating element and outdoor power supply provided by the present invention;

[0022] Figure 2 A schematic diagram of another embodiment of the heating element and outdoor power supply provided by the present invention;

[0023] Figure 3 A schematic diagram of another embodiment of the heating element and outdoor power supply provided by the present invention;

[0024] Figure 4 A schematic diagram of another embodiment of the heating element and outdoor power supply provided by the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of an existing heating element.

[0026] Explanation of icon numbers:

[0027] 10. Carrier; 20. Heating element; 30. First wiring area; 40. Second wiring area; 50. First trace; 51. First segment of the first trace; 52. Second segment of the first trace; 60. Second trace; 61. First segment of the second trace; 62. Second segment of the second trace.

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] To address the impact of low temperatures on battery performance, heating elements are widely used in battery systems. The main function of these heating elements is to raise the battery temperature by generating heat, allowing the electrolyte to regain its normal fluidity and thus improving the battery's charge and discharge performance. This ensures that the vehicle maintains stable battery performance even in low-temperature environments, guaranteeing unaffected starting and driving.

[0033] The heating elements of a heating element are typically arranged in the form of circuits on an insulating layer, forming a resistive network. The heating elements are connected to a power source through positive and negative terminals. When the current flows through these resistive networks, the Joule heating effect is generated, thus converting electrical energy into heat energy.

[0034] However, existing heating elements are used for connecting to both the positive and negative terminals (see reference). Figure 5The heating elements 70 and 80 shown are generally arranged in a straight line in the middle area of ​​the heating plate. This increases the risk of the heating elements being crushed to some extent, because when holding the heating element, the pressure of the fingers is easily applied to the middle area of ​​the heating plate, causing damage to the heating element in the middle area.

[0035] Therefore, the main objective of this invention is to provide a heating element and an outdoor power supply, which aims to solve the problem that when existing heating elements are held in the hand, the pressure from fingers can easily cause damage to the heating element in the middle area of ​​the heating element.

[0036] refer to Figure 1-4 This invention proposes a heating element, which includes a heating element 20 and a carrier 10 for placing the heating element 20. The heating element 20 is arranged on the carrier 10 in the form of circuits. The heating circuit includes:

[0037] Positive terminal +;

[0038] Negative terminal connection -;

[0039] The carrier 10 has a first wiring area 30 and a second wiring area 40. The positive terminal and the negative terminal are disposed in the first wiring area 30, and the heating element 20 is disposed in the second wiring area 40. The positive terminal is connected to one end of the heating element 20 via a first trace 50, and the negative terminal is connected to the other end of the heating element 20 via a second trace 60.

[0040] The first wiring area 30 and the second wiring area 40 are arranged along a first direction. The first wiring 50 extends from the positive terminal along a second direction and is connected to one end of the heating element 20. The second wiring 60 extends from the negative terminal along the opposite direction of the second direction and is connected to the other end of the heating element 20. The first direction is the width direction of the carrier 10, and the second direction is the length direction of the carrier 10.

[0041] In this embodiment, in practical applications, one of the first direction and the second direction can be the length direction and the other direction can be the width direction, and there is no limitation here.

[0042] In this embodiment, the heating element 20 is arranged on the carrier 10 in the form of a circuit. The larger the cross-sectional area or the longer the length of the heating element 20, the greater its impedance. When the heating element 20 is connected to a current source so that the current passing through the heating element 20 remains constant, the greater the impedance of the heating element 20, the greater the heating power of the heating element 20. When the heating element 20 is connected to a voltage source so that the voltage of the heating element 20 remains constant, the greater the impedance of the heating element 20, the smaller its heating power.

[0043] In this embodiment, the first trace 50 and the second trace 60 can be part of the heating element 20, or they can be used as wires to connect the heating element 20 to the positive terminal and the negative terminal.

[0044] Specifically, the heating element of the present invention includes a heating element 20 and a carrier 10. The carrier 10 has a first wiring area 30 with a positive electrode connection terminal and a negative electrode connection terminal respectively, and a second wiring area 40 with the heating element 20. The positive electrode connection terminal is connected to one end of the heating element 20 via a first wiring 50, and the negative electrode connection terminal is connected to the other end of the heating element 20 via a second wiring 60. Since the first wiring 50 extends along a second direction, and the second wiring 60 extends in the opposite direction of the second direction, which is the length direction of the carrier 10, both the first wiring 50 and the second wiring 60 are offset from the middle region of the carrier 10. For example, refer to Figure 1 The first trace 50 extends to the right along its length, and the second trace 60 extends to the left along its length, so that both the first trace 50 and the second trace 60 are offset from the central region of the carrier 10. With this configuration, in practical applications, when a user holds the heating element, because the first trace 50 and the second trace 60, which are respectively used to connect to the positive and negative terminals, are offset from the central region of the heating element, the first trace 50 and the second trace 60 will not be damaged by the pressure of fingers acting on the central region of the heating element. This configuration also makes the heating element less prone to being crushed or broken by fingers when held in hand, improving the overall durability and reliability of the heating element.

[0045] refer to Figure 2-3 In one embodiment of the present invention, the first trace 50 includes a first segment 51 and a second segment 52; the first end of the first segment 51 of the first trace 50 is connected to the positive electrode access terminal, the second end of the first segment 51 of the first trace 50 extends through the positive electrode access terminal along a second direction and is connected to the first end of the second segment 52 of the first trace 50, and the second end of the second segment 52 of the first trace 50 is connected to one end of the heating element 20;

[0046] The second segment 52 of the first trace 50 includes at least one S-shaped curve.

[0047] In this embodiment, the second end of the first trace 50 is configured as an S-shaped curve. The curved shape of the first trace 50 and the second trace 60 allows for more effective stress dispersion when subjected to finger pressure. Compared to existing straight conductors, when the first trace 50 or the second trace 60 is distributed in a straight line and subjected to finger pressure, its contact area is smaller, and the pressure is concentrated in a smaller area, making the first trace 50 or the second trace 60 more susceptible to breakage. The curved conductor has a larger contact area, allowing pressure to be distributed over a wider area, reducing stress concentration per unit area, thereby lowering the risk of breakage due to stress concentration.

[0048] Furthermore, the S-shaped curve includes any one of the following: a stepped curve, a wavy curve, or a spiral curve.

[0049] In one embodiment of the present invention, the second wiring 60 includes a first segment 51 and a second segment 62; the first end of the second segment 62 of the second wiring 60 is connected to the negative electrode access terminal, the second end of the second segment 62 of the second wiring 60 extends through the negative electrode access terminal along a second direction and is connected to the first end of the second segment 62 of the second wiring 60, and the second end of the second segment 62 of the second wiring 60 is connected to one end of the heating element 20;

[0050] The second segment 62 of the second trace 60 includes at least one S-shaped curve.

[0051] In this embodiment, the structure of the second segment 62 of the second trace 60 is the same as that of the second segment 52 of the first trace 50, both including at least one S-shaped curve. Therefore, the technical effect of the second segment 62 of the second trace 60 is the same as that of the second segment 52 of the first trace 50, and will not be described in detail here.

[0052] Both the positive and negative terminals of the heating element are located on the metal sheet. When a person holds the heating element, because the metal sheet is relatively hard, when the heating element is bent, the bend is likely to occur on one side of the middle area of ​​the two metal sheets near the carrier 10. Thus, if the first wiring 50 and the second wiring 60 both extend from the same side of the middle area of ​​the positive and negative terminals near the carrier 10, they are easily broken when the heating element is bent.

[0053] Therefore, in one embodiment of the present invention, the first trace 50 and the second trace 60 have opposite outgoing directions.

[0054] In this embodiment, reference Figure 3The first wire 50 exits to the right of the positive terminal, and the second wire 60 exits to the left of the negative terminal. The exit directions of the first wire 50 and the second wire 60 are opposite. With this configuration, when the heating element bends and the bend occurs on one side of the middle area between the positive and negative terminals near the carrier 10, the first wire 50 and the second wire 60 will not break because their exit directions are opposite and both are along the length of the carrier 10. Thus, in practical applications, the heating element of this invention is less likely to be crushed or broken by fingers when held in hand, thereby improving the overall durability and reliability of the heating element.

[0055] refer to Figure 4 In one embodiment of the present invention, the carrier 10 includes a first end, a second end, and a middle region. The first end and the second end of the carrier 10 are respectively disposed on a first side and a second side opposite to the first side of the middle region of the carrier 10. The first end and the second end of the carrier 10 are both disposed along the second direction and are both disposed close to the edge of the carrier 10. The positive electrode access end is located at the first end of the carrier 10, and the negative electrode access end is located at the second end of the carrier 10.

[0056] In this embodiment, if the length of the heating element is the same as the length of the object being heated and the object requires multiple heating elements, then the positive terminals of the multiple heating elements are located on the far right / far left of the carrier 10 (the object being heated), and the negative terminals are located on the far left / far right of the carrier 10 (the object being heated). In this way, the user does not need to distinguish between the positive and negative terminals when wiring. They only need to know the positions of the multiple positive and multiple negative terminals before wiring, which simplifies the wiring process. Moreover, users or maintenance personnel can more easily find and correct potential wiring problems and avoid system failures caused by wiring errors.

[0057] In one embodiment of the present invention, the thickness of the first trace 50 and the thickness of the second trace 60 are both greater than the thickness of the heating element 20.

[0058] In this embodiment, when the wiring is subjected to external force (such as pressure or bending from a finger), the internal stress is distributed along the cross-section. Thicker wiring, due to its larger cross-sectional area, can more effectively disperse these stresses, thereby reducing the risk of localized stress concentration. Furthermore, thicker wiring has better toughness, meaning it can undergo a certain degree of elastic deformation without immediate breakage when subjected to external force. This better toughness helps absorb and disperse impact energy, reducing the risk of breakage. With this design, in practical applications, the heating element of this invention is less likely to be crushed or broken by fingers when held in the hand, improving the overall durability and reliability of the heating element.

[0059] In one embodiment of the present invention, the middle position of the second wiring area 40 is the first set point, and the heating element 20 is arranged around the first set point of the second wiring area 40, wherein the shape of the surrounding is either a square spiral or a circular spiral.

[0060] The heating element 20 of the existing heating element is generally arranged in a wave-like pattern on the carrier 10. However, the wave-like pattern only has a single stress point in the vertical direction of the wave, so it is easy to break.

[0061] In this embodiment, the heating element 20 is shaped as either a square spiral or a circular spiral. This design distributes multiple stress points in both the vertical and horizontal directions. When subjected to pressure, these multiple stress points can disperse the stress and reduce the occurrence of single-point stress. Therefore, the square spiral or circular spiral heating element 20 is not easily broken. In practical applications, the heating element of this invention is less likely to be crushed or broken by fingers when held in the hand, thereby improving the overall durability and reliability of the heating element.

[0062] The present invention also proposes an outdoor power supply, including the heating element as described above.

[0063] It is worth noting that since the outdoor power supply of the present invention is based on the above-mentioned heating element, the embodiments of the outdoor power supply of the present invention include all the technical solutions of all the embodiments of the above-mentioned heating element, and the technical effects achieved are exactly the same, so they will not be repeated here.

[0064] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A heating element, characterized in that, The heating element includes a heating element and a carrier for placing the heating element. The heating element is arranged on the carrier in the form of circuits. The heating element includes: Positive terminal; Negative terminal; The carrier has a first wiring area and a second wiring area. The positive terminal and the negative terminal are disposed in the first wiring area, and the heating element is disposed in the second wiring area. The positive terminal is connected to one end of the heating element via a first trace, and the negative terminal is connected to the other end of the heating element via a second trace. The first wiring area and the second wiring area are arranged along a first direction. The first trace extends from the positive terminal along a second direction and is connected to one end of the heating element. The second trace extends from the negative terminal along a second direction and is connected to the other end of the heating element. The extension directions of the first trace and the second trace are two opposite directions parallel to the second direction. The first direction is the width direction of the carrier, and the second direction is the length direction of the carrier. The first trace includes a first segment and a second segment; the first end of the first segment of the first trace is connected to the positive electrode access terminal, the second end of the first segment of the first trace extends through the positive electrode access terminal along a second direction and is connected to the first end of the second segment of the first trace, and the second end of the second segment of the first trace is connected to one end of the heating element. The second segment of the first trace includes at least one S-shaped curve; The second wiring includes a first segment and a second segment; the first end of the first segment of the second wiring is connected to the negative electrode input terminal, the second end of the first segment of the second wiring extends through the negative electrode input terminal along a second direction and is connected to the first end of the second segment of the second wiring, and the second end of the second segment of the second wiring is connected to one end of the heating element; The second segment of the second trace includes at least one S-shaped curve; The S-shaped curve includes any one of the following: a stepped curve, a wavy curve, or a spiral curve. The middle position of the second wiring area is the first set point, and the heating element is arranged around the first set point of the second wiring area. The shape of the surrounding element includes either a square spiral or a circular spiral.

2. The heating element as described in claim 1, characterized in that, The first and second traces have opposite exit directions.

3. The heating element as described in claim 1, characterized in that, The thickness of the first trace and the thickness of the second trace are both greater than the thickness of the heating element.

4. The heating element as described in claim 1, characterized in that, The carrier includes a first end, a second end, and a middle region. The first end and the second end of the carrier are respectively disposed at the left and right ends of the middle region of the carrier. Both the first end and the second end of the carrier are disposed along the second direction and are disposed close to the edge of the carrier.

5. An outdoor power supply, characterized in that, Including the heating element as described in any one of claims 1 to 4.

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