Heating electrode of nitrogen oxide sensor, nitrogen oxide sensor and vehicle
By designing a horizontally extended heating electrode head and distinguishing between low-temperature and high-temperature sections, the printing defect problem of the wavy heating electrode was solved, and the effects of resistance stability and cost savings were achieved.
Patent Information
- Application Number
- CN202521713429.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2035-08-13
AI Technical Summary
The heating electrode head of the existing nitrogen oxide sensor is designed to be wavy, which leads to printing defects such as increased line segment width, line segment adhesion, and local printing missing, affecting the resistance stability and chip control effect, and increasing production costs.
A heating electrode head is designed, including a first part, a second part, a third part, and a fourth part, all of which extend in a horizontal direction and are connected by a connecting part, thereby distinguishing wide and narrow areas into low-temperature sections and high-temperature sections, avoiding printing defects, and maintaining stable resistance.
Through the horizontal extension and connection design, printing defects are prevented, resistance is kept stable, production and finished product scrap rates are reduced, and costs are saved.
Smart Images
Figure CN223346797U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicles, and in particular relates to a heating electrode of a nitrogen oxide sensor, the nitrogen oxide sensor and a vehicle. Background Art
[0002] In the existing technology, the design of the heating electrode head of the nitrogen oxide sensor is currently wavy. However, such a design will bring the following problems: the wavy heating electrode head is printed according to the printing direction, and some lines need to be printed perpendicular to the printing direction. These lines may appear blurred during printing, which causes the width of the line segment to increase, thereby causing the resistance to decrease. The small resistance will result in the required temperature not being reached, and the activity of other platinum electrodes will be reduced. The chip cannot enter the control or the control cannot reach a stable state. Moreover, when printing the wavy heating electrode head, the distance between each waveform is close, which can easily cause adhesion between the line segments, resulting in abnormal local resistance, and the chip cannot enter the control or the control cannot reach a stable state. In addition, printing the wavy heating electrode head is also prone to local printing missing, which generally appears at the arc of the corner, causing the resistance in this area to increase abnormally. After heating, the chip is damaged due to the local high temperature.
[0003] Since printing defects of the wavy heating electrode heads occur frequently, process parameters are often repeatedly verified during the production process to ensure printing quality, resulting in a lot of waste in the production process and greatly increasing production costs. Utility Model Content
[0004] In view of this, in order to solve the problem that printing a wavy heating electrode head easily causes the width of the line segment to become larger, and also easily causes adhesion between the line segments, or causes local printing missing, resulting in local resistance abnormality, and the chip cannot enter control or the control cannot reach a stable state, the utility model proposes a heating electrode for a nitrogen oxide sensor, a nitrogen oxide sensor and a vehicle.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A heating electrode for a nitrogen oxide sensor comprises: a heating electrode head and a heating electrode body fixedly connected to the heating electrode head, the heating electrode head comprising: a first portion, a second portion, a third portion, a fourth portion, a first connecting portion, a second connecting portion, and a third connecting portion, wherein the first portion, the second portion, the third portion, and the fourth portion are all arranged in parallel, one end of the first portion is connected to the heating electrode body, one end of the second portion is connected to one end of the third portion via the second connecting portion, one end of the fourth portion is connected to the heating electrode body, the other end of the first portion is connected to the other end of the second portion via the first connecting portion, and the other end of the third portion is connected to the other end of the fourth portion via the third connecting portion;
[0007] The first portion, the second portion, the third portion and the fourth portion all extend along the printing direction of the heating electrode.
[0008] As a preferred solution for the heating electrode of the above-mentioned nitrogen oxide sensor, the first part includes a first high-temperature section and a first low-temperature section, the heating electrode body, the first low-temperature section, the first high-temperature section and the first connecting part are connected in sequence, and the width of the first low-temperature section is greater than the width of the first high-temperature section.
[0009] As a preferred solution for the heating electrode of the above-mentioned nitrogen oxide sensor, the fourth part includes a second high-temperature segment and a second low-temperature segment, the heating electrode body, the second low-temperature segment, the second high-temperature segment and the third connecting part are connected in sequence, and the width of the second low-temperature segment is greater than the width of the second high-temperature segment.
[0010] As a preferred solution for the heating electrode of the above-mentioned nitrogen oxide sensor, the second part includes a third low-temperature segment, a third high-temperature segment and a fourth high-temperature segment, the second connecting part, the third high-temperature segment, the third low-temperature segment, the fourth high-temperature segment and the first connecting part are connected in sequence, and the width of the third high-temperature segment and the width of the fourth high-temperature segment are both smaller than the width of the third low-temperature segment.
[0011] As a preferred solution for the heating electrode of the above-mentioned nitrogen oxide sensor, the third high temperature segment is connected to the upper left corner of the third low temperature segment, and the fourth high temperature segment is connected to the lower right corner of the third low temperature segment.
[0012] As a preferred solution for the heating electrode of the above-mentioned nitrogen oxide sensor, the third part includes a fourth low-temperature segment, a fifth high-temperature segment and a sixth high-temperature segment, the second connecting part, the fifth high-temperature segment, the fourth low-temperature segment, the sixth high-temperature segment and the third connecting part are connected in sequence, and the width of the fifth high-temperature segment and the width of the sixth high-temperature segment are both smaller than the width of the fourth low-temperature segment.
[0013] As a preferred solution for the heating electrode of the above-mentioned nitrogen oxide sensor, the fifth high-temperature segment is connected to the upper right corner of the fourth low-temperature segment, and the sixth high-temperature segment is connected to the lower left corner of the fourth low-temperature segment.
[0014] As a preferred solution of the heating electrode of the nitrogen oxide sensor, the first connecting portion, the second connecting portion and the third connecting portion are all arc-shaped.
[0015] The utility model also provides a nitrogen oxide sensor, comprising the heating electrode of the nitrogen oxide sensor.
[0016] The utility model further provides a vehicle, comprising the above-mentioned nitrogen oxide sensor.
[0017] Compared with the prior art, the heating electrode of the nitrogen oxide sensor, the nitrogen oxide sensor, and the vehicle provided by the present invention have the following beneficial effects:
[0018] The utility model provides a heating electrode for a nitrogen oxide sensor, a nitrogen oxide sensor, and a vehicle. In the heating electrode of the nitrogen oxide sensor, the first part, the second part, the third part, and the fourth part all extend along the printing direction of the heating electrode. It can be understood that the printing direction is a horizontal direction. When printing the first part, the second part, the third part, and the fourth part, it is sufficient to always maintain a horizontal printing direction. There is no need to perform printing operations perpendicular to the printing direction, thereby preventing the widths of the first part, the second part, the third part, and the fourth part from being uncontrolled, and also preventing adhesion between the first part, the second part, the third part, and the fourth part. Moreover, the first part, the second part, the third part, and the fourth part can be connected only by the first connecting part, the second connecting part, and the third connecting part, which can prevent printing omissions, thereby avoiding various printing defects, avoiding abnormal resistance, and keeping the control of the chip in a stable state. This reduces the process scrap rate and the finished product scrap rate, and saves costs significantly.
[0019] The low-temperature and high-temperature sections are distinguished by varying the width, with the wide area serving as the low-temperature section and the narrow area serving as the high-temperature section. The heating electrode of the nitrogen oxide sensor in this embodiment has been designed and calculated to ensure that the resistance of the heating electrode tip meets the required requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:
[0021] Figure 1 This is a schematic structural diagram of a heating electrode of a nitrogen oxide sensor provided by a specific embodiment of the present utility model;
[0022] Figure 2 This is a schematic structural diagram of a heating electrode head of a heating electrode of a nitrogen oxide sensor provided by a specific embodiment of the present utility model;
[0023] Figure 3 This is a schematic structural diagram of a heating electrode of a nitrogen oxide sensor in the prior art;
[0024] Figure 4 The figure is a schematic structural diagram of a heating electrode head of a heating electrode of a nitrogen oxide sensor in the prior art.
[0025] In the picture:
[0026] 1. First section; 11. First low-temperature section; 12. First high-temperature section;
[0027] 2. Second section; 21. Third low temperature section; 22. Third high temperature section; 23. Fourth high temperature section;
[0028] 3. The third section; 31. The fourth low-temperature section; 32. The fifth high-temperature section; 33. The sixth high-temperature section;
[0029] 4. The fourth section; 41. The second high temperature section; 42. The second low temperature section;
[0030] 5. First connecting portion;
[0031] 6. Second connecting portion;
[0032] 7. The third connecting part;
[0033] 8. Heating electrode body. DETAILED DESCRIPTION
[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.
[0035] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0037] In the description of this embodiment, terms such as "upper," "lower," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.
[0038] See also Figure 1-2 Description of this embodiment: The utility model provides a heating electrode for a nitrogen oxide sensor, a nitrogen oxide sensor and a vehicle, the heating electrode of the nitrogen oxide sensor includes a heating electrode head and a heating electrode body 8 fixedly connected to the heating electrode head, the heating electrode head includes: a first part 1, a second part 2, a third part 3, a fourth part 4, a first connecting part 5, a second connecting part 6 and a third connecting part 7, the first part 1, the second part 2, the third part 3 and the fourth part 4 are all arranged in parallel, one end of the first part 1 is connected to the heating electrode body 8, one end of the second part 2 is connected to one end of the third part 3 through the second connecting part 6, one end of the fourth part 4 is connected to the heating electrode body 8, the other end of the first part 1 is connected to the other end of the second part 2 through the first connecting part 5, and the other end of the third part 3 is connected to the other end of the fourth part 4 through the third connecting part 7; the first part 1, the second part 2, the third part 3 and the fourth part 4 all extend along the printing direction of the heating electrode.
[0039] In the heating electrode of the nitrogen oxide sensor, the first part 1, the second part 2, the third part 3, and the fourth part 4 all extend along the printing direction of the heating electrode. It is understood that the printing direction is horizontal. When printing the first part 1, the second part 2, the third part 3, and the fourth part 4, it is sufficient to always maintain a horizontal printing direction. There is no need to print perpendicular to the printing direction. This prevents the width of the first part 1, the second part 2, the third part 3, and the fourth part 4 from being uncontrolled, and also prevents adhesion between the first part 1, the second part 2, the third part 3, and the fourth part 4. Moreover, the first part 1, the second part 2, the third part 3, and the fourth part 4 can be connected only by the first connecting part 5, the second connecting part 6, and the third connecting part 7. This prevents printing omissions, thereby avoiding various printing defects and abnormal resistance, and maintaining stable chip control. This reduces the process scrap rate and the finished product scrap rate, and saves costs significantly.
[0040] Optionally, the first part 1 includes a first high temperature section 12 and a first low temperature section 11, the heating electrode body 8, the first low temperature section 11, the first high temperature section 12 and the first connecting part 5 are connected in sequence, and the width of the first low temperature section 11 is greater than the width of the first high temperature section 12.
[0041] Optionally, the fourth part 4 includes a second high temperature section 41 and a second low temperature section 42, the heating electrode body 8, the second low temperature section 42, the second high temperature section 41 and the third connecting part 7 are connected in sequence, and the width of the second low temperature section 42 is greater than the width of the second high temperature section 41.
[0042] Optionally, the second portion 2 includes a third low-temperature section 21, a third high-temperature section 22 and a fourth high-temperature section 23, the second connecting portion 6, the third high-temperature section 22, the third low-temperature section 21, the fourth high-temperature section 23 and the first connecting portion 5 are connected in sequence, and the width of the third high-temperature section 22 and the width of the fourth high-temperature section 23 are both smaller than the width of the third low-temperature section 21.
[0043] Optionally, the third high temperature section 22 is connected to the upper left corner of the third low temperature section 21 , and the fourth high temperature section 23 is connected to the lower right corner of the third low temperature section 21 .
[0044] Optionally, the third portion 3 includes a fourth low-temperature section 31, a fifth high-temperature section 32 and a sixth high-temperature section 33, the second connecting portion 6, the fifth high-temperature section 32, the fourth low-temperature section 31, the sixth high-temperature section 33 and the third connecting portion 7 are connected in sequence, and the width of the fifth high-temperature section 32 and the width of the sixth high-temperature section 33 are both smaller than the width of the fourth low-temperature section 31.
[0045] Optionally, the fifth high temperature section 32 is connected to the upper right corner of the fourth low temperature section 31 , and the sixth high temperature section 33 is connected to the lower left corner of the fourth low temperature section 31 .
[0046] The low-temperature and high-temperature sections are distinguished by varying the width, with the wide area serving as the low-temperature section and the narrow area serving as the high-temperature section. The heating electrode of the nitrogen oxide sensor in this embodiment has been designed and calculated to ensure that the resistance of the heating electrode tip meets the required requirements.
[0047] Optionally, the first connection portion 5 , the second connection portion 6 and the third connection portion 7 are all arc-shaped.
[0048] The utility model also provides a nitrogen oxide sensor, comprising the heating electrode of the nitrogen oxide sensor.
[0049] The utility model further provides a vehicle, comprising the above-mentioned nitrogen oxide sensor.
[0050] Obviously, the embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. An exhaustive list of all possible embodiments is unnecessary and impossible.
Claims
1. A heating electrode for a nitrogen oxide sensor, characterized in that: include: A heating electrode head and a heating electrode body (8) fixedly connected to the heating electrode head, the heating electrode head comprising: a first part (1), a second part (2), a third part (3), a fourth part (4), a first connecting part (5), a second connecting part (6) and a third connecting part (7), the first part (1), the second part (2), the third part (3) and the fourth part (4) are all arranged in parallel, one end of the first part (1) is connected to the heating electrode body (8), one end of the second part (2) is connected to one end of the third part (3) through the second connecting part (6), one end of the fourth part (4) is connected to the heating electrode body (8), the other end of the first part (1) is connected to the other end of the second part (2) through the first connecting part (5), and the other end of the third part (3) is connected to the other end of the fourth part (4) through the third connecting part (7); The first part (1), the second part (2), the third part (3) and the fourth part (4) all extend along the printing direction of the heating electrode.
2. The heating electrode of the nitrogen oxide sensor according to claim 1, characterized in that: The first portion (1) comprises a first high-temperature section (12) and a first low-temperature section (11); the heating electrode body (8), the first low-temperature section (11), the first high-temperature section (12) and the first connecting portion (5) are connected in sequence; the width of the first low-temperature section (11) is greater than the width of the first high-temperature section (12).
3. The heating electrode of the nitrogen oxide sensor according to claim 1, characterized in that: The fourth portion (4) comprises a second high-temperature section (41) and a second low-temperature section (42); the heating electrode body (8), the second low-temperature section (42), the second high-temperature section (41) and the third connecting portion (7) are connected in sequence; and the width of the second low-temperature section (42) is greater than the width of the second high-temperature section (41).
4. The heating electrode for the nitrogen oxide sensor according to claim 1, characterized in that: The second portion (2) comprises a third low-temperature section (21), a third high-temperature section (22) and a fourth high-temperature section (23); the second connecting portion (6), the third high-temperature section (22), the third low-temperature section (21), the fourth high-temperature section (23) and the first connecting portion (5) are connected in sequence; the width of the third high-temperature section (22) and the width of the fourth high-temperature section (23) are both smaller than the width of the third low-temperature section (21).
5. The heating electrode of the nitrogen oxide sensor according to claim 4, characterized in that: The third high temperature section (22) is connected to the upper left corner of the third low temperature section (21), and the fourth high temperature section (23) is connected to the lower right corner of the third low temperature section (21).
6. The heating electrode of the nitrogen oxide sensor according to claim 1, characterized in that: The third portion (3) comprises a fourth low-temperature section (31), a fifth high-temperature section (32) and a sixth high-temperature section (33); the second connecting portion (6), the fifth high-temperature section (32), the fourth low-temperature section (31), the sixth high-temperature section (33) and the third connecting portion (7) are connected in sequence; the width of the fifth high-temperature section (32) and the width of the sixth high-temperature section (33) are both smaller than the width of the fourth low-temperature section (31).
7. The heating electrode for the nitrogen oxide sensor according to claim 6, characterized in that: The fifth high-temperature section (32) is connected to the upper right corner of the fourth low-temperature section (31), and the sixth high-temperature section (33) is connected to the lower left corner of the fourth low-temperature section (31).
8. The heating electrode for the nitrogen oxide sensor according to claim 1, characterized in that: The first connecting portion (5), the second connecting portion (6) and the third connecting portion (7) are all arc-shaped.
9. A nitrogen oxide sensor, characterized in that: A heating electrode for a nitrogen oxide sensor comprising the method according to any one of claims 1 to 8.
10. A vehicle, characterized in that: The nitrogen oxide sensor according to claim 9 is included.