Electronic control system and electronic control device

Abstract

Disclosed in the present disclosure are an electronic control system and an electronic control device. In the electronic control system, a corresponding signal output portion, relay, controlled load and mounting portion form a control chain; a first fool-proof structure is formed between the signal output portion and a signal connection portion of each control chain, such that the signal output portion of any control chain is only suitable for being mechanically connected to the signal connection portion of the control chain; and a second fool-proof structure is formed between the relay and the mounting portion of each control chain, such that the relay of any control chain is only suitable for being mounted on the mounting portion of the control chain. In the electronic control device, at least one of the shape and structure of the signal connection portions of relays is different from each other; each relay is mounted on the corresponding mounting portion of an accommodating member; an error-proof portion is provided on the portion of each relay that is suitable for being connected to the mounting portion; at least one of the shape, structure and position of the error-proof portions of the relays is different from each other, such that each relay can only be mounted on the corresponding mounting portion. Using the above technical solution can reduce or even prevent the occurrence of control errors.

Description

Electrical control system and electrical control device

[0001] This disclosure claims priority to Chinese patent applications filed on May 28, 2024, with application numbers 202421187341.X and 202410672108.9, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of relays, and more specifically to an electronic control system and an electronic control device. Background Technology

[0003] In the prior art, an electronic control system for performing multiple control tasks includes a signal control unit, a controlled load unit, a status control unit, and a housing. The signal control unit generally includes multiple signal controllers or a central signal controller. The signal control unit outputs different control signals through two or more signal output sections. The controlled load unit includes at least two controlled loads, each corresponding to a signal output section. The status control unit includes at least two relays, each relay comprising a housing, a connector, a signal connection section, a load terminal, and a relay body. The housing generally houses the relay body, and the connector is fixedly attached to the housing to form the relay's outer casing. The signal connection section is located on the connector and is electrically connected to the signal output section to introduce control signals. The load terminal can be fixed to the connector or the housing, and is electrically connected to the controlled load to control the on / off state of the controlled load. A typical relay body includes a magnetic circuit and a contact section. The magnetic circuit includes a coil assembly and an armature assembly, while the contact section includes a moving contact and a stationary contact. The coil assembly, controlled by a control signal, generates or changes a magnetic field to drive the armature assembly. The armature assembly then causes the moving contact to close or open with the stationary contact, controlling the on / off state of the controlled load. A housing is used to house the relays, and sometimes also to house signal control units and / or controlled load units. Each relay is mounted within a housing.

[0004] In existing electronic control systems, relays often have the same function, and sometimes even the same or similar models. This results in relays having similar or even identical appearances, shapes, and structures. Each signal output is electrically connected to a relay, which in turn is electrically connected to the corresponding controlled load, enabling the signal control unit to ultimately control the controlled load.

[0005] However, in reality, control errors often occur. This means that errors happen when the control signals from the signal control unit, transmitted to the status control unit, control the on / off state of the controlled load. For example, a controlled load that should not be turned off is incorrectly turned off, or a controlled load that should not be turned on is incorrectly turned on, or a controlled load that should be turned off is not correctly turned off, or a controlled load that should be turned on is not correctly turned on. Especially in high-speed vehicles, such control errors can have fatal consequences. Summary of the Invention

[0006] The purpose of this disclosure is to overcome the aforementioned defects or problems in the prior art and to provide an electronic control system and electronic control device that can reduce or even avoid control errors compared to the prior art.

[0007] To achieve the above objectives, the following technical solution is adopted:

[0008] The first technical solution relates to an electronic control system, comprising: a signal control unit having at least two signal output units for outputting control signals; a controlled load unit having at least two controlled loads corresponding to the signal output units; and a status control unit having at least two relays corresponding to the signal output units, each relay having a signal connection part for mechanical and electrical connection with the corresponding signal output unit to receive control signals. The at least two relays are also electrically connected to the at least two controlled loads to control the controlled loads according to the control signals. The load is in operation; and a housing for accommodating at least two relays, the housing having at least two mounting portions corresponding one-to-one with at least two controlled loads, the at least two relays being mounted to the corresponding at least two mounting portions; the corresponding signal output portions, relays, controlled loads, and mounting portions form a control chain; a first foolproof structure is formed between the signal output portion and the signal connection portion of each control chain, so that the signal output portion of any control chain is only suitable for mechanical connection to the signal connection portion of that control chain; a second foolproof structure is formed between the relays of each control chain and the mounting portions, so that the relays of any control chain are only suitable for mounting to the mounting portion of that control chain.

[0009] The second technical solution is based on the first technical solution. The first foolproof structure includes a foolproof part on the signal connection part and a corresponding part on the signal output part. The corresponding part of any control chain is configured to match only the foolproof part of the control chain, so that any signal output part can only be mechanically connected to the corresponding signal connection part. The second foolproof structure includes a fault-proof part on the relay and a mating part on the mounting part. The mating part of any control chain is configured to match only the fault-proof part of the control chain, so that any relay can only be installed on the corresponding mounting part.

[0010] The third technical solution is based on the second technical solution, wherein the signal output part and the signal connection part of the same control chain are plugged in and cooperate, and the foolproof part is a protrusion and / or recess provided on the signal connection part.

[0011] The fourth technical solution is based on the third technical solution, wherein at least one of the following is different: the shape, structure, and position of the error prevention part on the signal connection part of each control chain.

[0012] The fifth technical solution is based on the second technical solution, wherein the error-proof part is a protrusion and / or recess provided on the relay.

[0013] The sixth technical solution is based on the fifth technical solution, wherein at least one of the error-proofing parts of each control chain is different in shape, structure, and position on the relay.

[0014] The seventh technical solution relates to an electronic control device, which includes a housing and at least two relays. Each of the at least two relays is provided with a signal connection portion for receiving control signals. The shape and structure of the signal connection portions of the at least two relays are different from each other. The at least two relays are mounted on mounting portions corresponding to the housing. The portions of the at least two relays adapted to connect to the mounting portions are provided with error-proofing portions. The shape, structure, and position of the error-proofing portions of the at least two relays are different from each other, so that the at least two relays can only be mounted on the corresponding mounting portions.

[0015] The eighth technical solution is based on the seventh technical solution, wherein the relay includes a housing, a relay body and a connector, the housing is used to house the relay body, the connector is fixedly connected to the housing, and the signal connection part and the error prevention part are both disposed on the connector.

[0016] The ninth technical solution is based on the seventh technical solution, wherein the relay includes a housing, a relay body, a connector, and a load terminal. The housing houses the relay body, the connector is fixedly connected to the housing, the load terminal is used to control the on / off state of the controlled load, the load terminal is fixedly connected to the housing and electrically connected to the relay body, the signal connection part is disposed in the connector, and the error prevention part is disposed in the housing and / or the load terminal.

[0017] The tenth technical solution is based on the seventh technical solution, wherein the error-proof part is a protrusion and / or recess provided on the relay.

[0018] Compared with existing technologies, the above solution has the following beneficial effects:

[0019] The applicant has found that the cause of control errors in the prior art lies in the mismatch between the signal output and the controlled load. Therefore, efforts to solve this problem have primarily focused on establishing a direct correspondence between the signal output and the controlled load. This is understandable, given that all relays function identically; if a direct correspondence could be established between the signal output and the controlled load, the relays could be interchanged, thereby reducing production costs. However, the applicant has found that since the signal output and the controlled load are not directly connected, establishing a direct correspondence between them is difficult and unreliable. The core inventive concept of this disclosure is to ensure the correspondence between the signal output and the controlled load by establishing a correspondence between each relay and the signal output, and between the controlled load and each relay. In the first technical solution, a first foolproof structure is formed between the signal output section and the signal connection section of each control chain to ensure the correspondence between the signal output section and the relay. Simultaneously, to establish the correspondence between the controlled load and each relay, a second foolproof structure could be considered between the controlled load and the load terminal. However, this would prevent the controlled load from being produced in a standardized manner, significantly impacting overall cost and production efficiency. Another key inventive concept of this disclosure is that by providing a mounting section corresponding to the controlled load on the housing and forming a second foolproof structure between the relays of each control chain and the mounting section, the correspondence between the controlled load and each relay is indirectly established. This facilitates the standardized production of the controlled load while fully utilizing the function of the housing in accommodating each relay.

[0020] In the first technical solution, the first foolproof structure ensures that any signal output unit is only mechanically connected to the corresponding signal connection unit, thus establishing a correspondence between the signal output unit and the relay; the second foolproof structure ensures that any relay is only suitable for installation on the mounting part corresponding to the controlled load, thus establishing a correspondence between the relay and the controlled load. These two correspondences effectively improve the correspondence between the signal output unit and the controlled load, thus reducing the occurrence of control errors compared to existing technologies.

[0021] The second technical solution is a preferred embodiment of the first technical solution. Specifically, by configuring the corresponding part of any control chain to match only with the error-proofing part of the same control chain, any signal output part can only be mechanically connected to the corresponding signal connection part; similarly, by configuring the mating part of any control chain to match only with the error-proofing part of the same control chain, any relay can only be installed to the corresponding mounting part. Here, it is necessary to explain the difference between "can only" in this technical solution and "suitable" in the first technical solution. The "suitable" in the first technical solution certainly includes the "can only" in this technical solution, but its extension is broader, specifically including establishing clear visual markings, such as color markings or text markings, to establish correspondence. Of course, if only visual markings are used, the uniqueness of the correspondence will certainly be weakened, but it still has advantages. The advantage is that the structure of the relay and related components does not need to be redesigned, and therefore no new molds are needed, so it is a solution with lower production costs. However, in this technical solution, "can only" means that the matching is unique through a hard error-proofing method of mechanical matching, thereby ensuring the uniqueness of the correspondence. Therefore, this technical solution can more effectively reduce or even avoid the occurrence of control errors.

[0022] The third and fourth technical solutions are specific applications of the second technical solution in the error prevention part and the corresponding part. By using protrusions and / or recesses in the plug-in mating structure and making the corresponding part uniquely match it, the unique matching of the signal output part and the signal connection part can be achieved.

[0023] The fifth and sixth technical solutions are specific applications of the second technical solution in the error prevention part and the mating part. By using protrusions and / or recesses and making the mating part uniquely matched with them, the unique matching between the relay and the mounting part can be achieved.

[0024] The seventh technical solution is a specific embodiment of the second technical solution in the electronic control device. Based on the same inventive concept, it effectively reduces or avoids control errors by using unique design of each relay signal connection part and unique design of the error prevention part.

[0025] The eighth to tenth technical solutions are specific implementations of the seventh technical solution. Among them, the eighth technical solution is the optimal implementation. In the eighth technical solution, both the signal connection part and the error-proof part are located in the connector, thus standardizing the design of the housing. This concentrates the differences between each relay on the connector, greatly reducing the cost of reduced interchangeability caused by the uniqueness of the relay. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:

[0027] Figure 1 is a structural schematic diagram of an embodiment of the electronic control system of this disclosure;

[0028] Figure 2 is a perspective view of the first relay in Embodiment 1 of the electronic control system of this disclosure;

[0029] Figure 3 is a front view of Figure 2;

[0030] Figure 4 is a perspective view of the second relay in Embodiment 1 of the electronic control system of this disclosure;

[0031] Figure 5 is a front view of Figure 4;

[0032] Figure 6 is a perspective view of the first relay and the first signal output unit in Embodiment 1 of the electronic control system of this disclosure;

[0033] Figure 7 is a perspective view of the second relay and the second signal output section in Embodiment 1 of the electronic control system of this disclosure;

[0034] Figure 8 is a schematic diagram of the assembly of the first relay, the second relay and the housing in Embodiment 1 of the electronic control system of this disclosure;

[0035] Figure 9 is a top view of Figure 8;

[0036] Figure 10 is a perspective view of the first relay in Embodiment 3 of the electronic control system of this disclosure;

[0037] Figure 11 is a front view of Figure 10;

[0038] Figure 12 is a perspective view of the second relay in Embodiment 3 of the electronic control system of this disclosure;

[0039] Figure 13 is a front view of Figure 12;

[0040] Figure 14 is a schematic diagram of the assembly of the first relay, the second relay and the housing in Embodiment 3 of the electronic control system of this disclosure;

[0041] Figure 15 is a three-dimensional schematic diagram of one embodiment of the relay of this disclosure;

[0042] Figure 16 is the front view of Figure 15;

[0043] Figure 17 is a perspective view of another construction of the relay according to Embodiment 1 of the present disclosure;

[0044] Figure 18 is the front view of Figure 17;

[0045] Figure 19 is a front view of a construction of a relay according to a second embodiment of the present disclosure;

[0046] Figure 20 is a front view of another construction of the relay according to Embodiment 2 of this disclosure;

[0047] Figure 21 is a three-dimensional schematic diagram of the first construction of the relay of the present disclosure in a third embodiment;

[0048] Figure 22 is a perspective view of a second construction of the relay according to a third embodiment of the present disclosure;

[0049] Figure 23 is a front view of a third construction of the relay according to a third embodiment of the present disclosure;

[0050] Figure 24 is a perspective view of the fourth configuration of the relay according to Embodiment 3 of this disclosure;

[0051] Figure 25 is a front view of the fourth construction of the relay according to Embodiment 3 of this disclosure;

[0052] Figure 26 is a three-dimensional schematic diagram of a fourth embodiment of the relay of this disclosure;

[0053] Figure 27 is a partial cross-sectional view of the relay embodiment five of this disclosure and the mounting part in a mating state;

[0054] Figure 28 is a front view of the first construction of the relay according to Embodiment Six of this disclosure;

[0055] Figure 29 is a front view of a second construction of the relay according to Embodiment Six of this disclosure;

[0056] Figure 30 is a front view of the third construction of the relay according to Embodiment Six of this disclosure;

[0057] Figure 31 is a front view of the fourth construction of the relay according to Embodiment Six of this disclosure;

[0058] Figure 32 is a front view of the fifth construction of the relay according to Embodiment Six of this disclosure;

[0059] Figure 33 is a front view of the sixth construction of the relay according to Embodiment Six of this disclosure.

[0060] Key reference numerals in the accompanying drawings: 1. Signal control unit; 2. Controlled load unit; 3. Status control unit; 4. Containing element; 5. First signal output unit; 6. Second signal output unit; 7. First corresponding part; 8. Second corresponding part; 9. First controlled load; 10. Second controlled load; 11. First relay; 12. Second relay; 13. First signal connection part; 14. First error-proofing part; 15. First foolproofing part; 16. Second signal connection part; 17. Second error-proofing part; 18. Second foolproofing part; 19. First mounting part; 20. Second mounting part; 21. First 22. Second mating part; 23. First housing; 24. First connector; 25. First load terminal; 26. Second housing; 27. Second connector; 28. Second load terminal; L1. First control chain; L2. Second control chain; 100. Error prevention part; 110. Protruding structure; 120. Recessed structure; 200. Housing; 30. Connector; 31. Connecting seat; 32. Signal connection part; 321. Error prevention part; 33. Reinforcing plate; 40. Load terminal; 50. Mounting part; 51. Recessed structure; 52. Protruding structure. Detailed Implementation

[0061] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.

[0062] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0063] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other means or components.

[0064] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description shall mean “including but not limited to.”

[0065] In the claims and description, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.

[0066] Unless otherwise specified in the claims and description, the term “notch” means a groove or gap.

[0067] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0068] Example 1 of the electronic control system

[0069] Referring to Figure 1, which illustrates the electronic control system in Embodiment 1, the electronic control system includes a signal control unit 1, a controlled load unit 2, a status control unit 3, and a housing 4.

[0070] As shown in Figure 1, the signal control unit 1 has at least two signal output sections, which are used to output control signals. In this embodiment, there are two signal output sections, namely a first signal output section 5 and a second signal output section 6. The first signal output section 5 has a first corresponding section 7, and the second signal output section 6 has a second corresponding section 8.

[0071] As shown in Figure 1, the controlled load unit 2 includes at least two controlled loads, each corresponding to a signal output unit. In this embodiment, there are two controlled loads: a first controlled load 9 and a second controlled load 10. The first controlled load 9 corresponds to the first signal output unit 5, and the second controlled load 10 corresponds to the second signal output unit 6.

[0072] As shown in Figure 1, the state control unit 3 includes at least two relays with identical functions. Each relay has a corresponding signal output section and is used to control the operating state of the corresponding controlled load. Specifically, in this embodiment, the relay is used to control the on / off state of the corresponding controlled load. The relay has a signal connection section and a mistake-proofing section. The signal connection section has a mistake-proofing section that matches the corresponding section.

[0073] In this embodiment, there are two relays, namely a first relay 11 and a second relay 12. The first relay 11 is electrically connected to the first controlled load 9 and is used to control the on / off state of the first controlled load 9. The first relay 11 is provided with a first signal connection part 13 and a first error-proofing part 14. The first signal connection part 13 is mechanically and electrically connected to the first signal output part 5 to receive the control signal output by the first signal output part 5. The first signal connection part 13 is provided with a first error-proofing part 15, and a first error-proofing structure is formed between the first error-proofing part 15 and a first corresponding part 7. The first corresponding part 7 is configured to only match the first error-proofing part 15 so that the first signal output part 5 can only be mechanically connected to the first signal connection part 13.

[0074] The second relay 12 is electrically connected to the second controlled load 10 and is used to control the on / off state of the second controlled load 10. The second relay 12 is provided with a second signal connection part 16 and a second error-proofing part 17. The second signal connection part 16 is mechanically and electrically connected to the second signal output part 6 to receive control signals output by the second signal output part 6. The second signal connection part 16 is provided with a second error-proofing part 18, and a first error-proofing structure is also formed between the second error-proofing part 18 and the second corresponding part 8. The second corresponding part 8 is configured to only match the second error-proofing part 18 so that the second signal output part 6 can only be mechanically connected to the second signal connection part 16.

[0075] As shown in Figure 1, the receiving element 4 is used to receive at least each relay. In this embodiment, the receiving element 4 only receives each relay; in other embodiments, the receiving element 4 may also receive the signal control unit 1 and / or the controlled load unit 2. The receiving element 4 is provided with a base, and the base is provided with a mounting part corresponding to the controlled load. Each relay is mounted to the corresponding mounting part, and the mounting part is provided with a mating part that matches the corresponding error-proofing part.

[0076] In this embodiment, the base is provided with a first mounting portion 19 and a second mounting portion 20. The first mounting portion 19 corresponds to the first controlled load 9 and is used to mount the first relay 11. The first mounting portion 19 is provided with a first mating portion 21, which forms a second foolproof structure with the first error-proofing portion 14. The first mating portion 21 is configured to only mate with the first error-proofing portion 14 so that the first relay 11 can only be mounted to the first mounting portion 19. The second mounting portion 20 corresponds to the second controlled load 10 and is used to mount the second relay 12. The second mounting portion 20 is provided with a second mating portion 22, which also forms a second foolproof structure with the second error-proofing portion 17. The second mating portion 22 is configured to only mate with the second error-proofing portion 17 so that the second relay 12 can only be mounted to the second mounting portion 20.

[0077] As shown in Figure 1, the first signal output unit 5, the first relay 11, the first controlled load 9, and the first mounting part 19 together form a first control chain L1. On the first control chain L1, the first signal connection part 13 is mechanically and electrically connected to the first signal output unit 5. The first relay 11 is mounted on the first mounting part 19 corresponding to the first controlled load 9 and is electrically connected to the first controlled load 9. The first signal output unit 5 sends a control signal to the first relay 11, and the first relay 11 controls the first controlled load 9 to switch on and off according to the control signal. The second signal output unit 6, the second relay 12, the second controlled load 10, and the second mounting part 20 together form a second control chain L2. On the second control chain L2, the second signal connection part 16 is mechanically and electrically connected to the second signal output unit 6. The second relay 12 is mounted on the second mounting part 20 corresponding to the second controlled load 10 and is electrically connected to the second controlled load 10. The second signal output unit 6 sends a control signal to the second relay 12, and the second relay 12 controls the second controlled load 10 to switch on and off according to the control signal.

[0078] Referring to Figures 2 and 3, which illustrate the first relay 11 in Embodiment 1, the first relay 11 includes a first housing 23, a first relay body (not shown), a first connector 24, and two first load terminals 25. The first housing 23 houses the first relay body, which includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil assembly and an armature assembly, and the contact portion includes a moving contact and a stationary contact. The coil assembly receives a control signal to generate or change a magnetic field, thereby driving the armature assembly to close or open the moving contact with the stationary contact to control the on / off state of the first controlled load 9. The first connector 24 is fixed to the front of the first housing 23. In this embodiment, both the first signal connection portion 13 and the first error-proof portion 14 are disposed on the first connector 24. The first signal connection portion 13 is electrically connected to the coil assembly and is located on the front surface of the first connector 24. The first error-proof portion 15 is disposed on the right side of the inner surface of the upper wall of the terminal housing of the first signal connection portion 13 and protrudes downwards. The first error-proofing part 14 is located on the right side of the first signal connection part 13, closer to the first signal connection part 13, and protrudes downward. Two first load terminals 25 are electrically connected to the contact portion and used for electrical connection to the first controlled load 9. The two first load terminals 25 are positioned one in front of the other.

[0079] Referring to Figures 4 and 5, which illustrate the second relay 12 in Embodiment 1, the second relay 12 includes a second housing 26, a second relay body (not shown), a second connector 27, and two second loads 28. The second housing 26 houses the second relay body, which also includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil assembly and an armature assembly, and the contact portion includes a moving contact and a stationary contact. The coil assembly receives a control signal to generate or change a magnetic field, thereby driving the armature assembly to close or open the moving contact with the stationary contact to control the on / off state of the second controlled load 10. The second connector 27 is fixed to the front of the second housing 26. In this embodiment, both the second signal connection portion 16 and the second error-proof portion 17 are disposed on the second connector 27. The second signal connection portion 16 is electrically connected to the coil assembly and is located on the front surface of the second connector 27. The second error-proof portion 18 is disposed on the left side of the inner surface of the upper wall of the terminal housing of the second signal connection portion 16 and protrudes downwards. The second error-proofing part 17 is located on the right side of the second signal connection part 16, relatively far from the second signal connection part 16, and protrudes downward. Two second load terminals 28 are electrically connected to the contact portion and used for electrical connection to the second controlled load 10. The two second load terminals 28 are arranged one in front of the other.

[0080] Referring to Figure 6, Figure 6 shows the first relay 11 and the first signal output section 5. As shown in Figure 6, the first signal output section 5 is plugged into the first signal connection section 13. The first signal output section 5 is adapted to be inserted into the terminal housing of the first signal connection section 13. The first corresponding section 7 is a groove provided on the upper surface of the end of the first signal output section 5 and is located on the right side to match the first foolproof section 15.

[0081] Referring to Figure 7, Figure 7 shows the second relay 12 and the second signal output section 6. As shown in Figure 7, the second signal output section 6 is plugged into the second signal connection section 16. The second signal output section 6 is adapted to be inserted into the terminal housing of the second signal connection section 16. The second corresponding section 8 is a groove provided on the upper surface of the end of the second signal output section 6 and is located on the left side to match the second foolproof section 18.

[0082] As described above, because the first foolproof part 15 and the second foolproof part 18 are in different positions, the first corresponding part 7 of the first signal output part 5 can only match the first foolproof part 15 of the first signal connection part 13, and cannot match the second foolproof part 18 of the second signal connection part 16. Therefore, the first signal output part 5 can only be plugged into the first signal connection part 13. Similarly, the second corresponding part 8 of the second signal output part 6 can only match the second foolproof part 18 of the second signal connection part 16, and cannot match the first foolproof part 15 of the first signal connection part 13. Therefore, the second signal output part 6 can only be plugged into the second signal connection part 16, thus establishing a unique correspondence between the signal output part and the relay. Similarly, in other embodiments, two or more foolproof parts can be set to have at least one different shape, structure, or position, which can also achieve the same foolproof function.

[0083] Referring to Figure 8, which shows the state in which the first relay 11 and the second relay 12 are installed in the receiving member 4 in Embodiment 1. As shown in Figure 8, the first mating portion 21 on the first mounting portion 19 of the base of the receiving member 4 for mounting the first relay 11 is a groove, and its relative position on the first mounting portion 19 corresponds to the relative position of the first error-proofing portion 14 on the first relay 11. Therefore, the first error-proofing portion 14 can be inserted into the first mating portion 21. The second mating portion 22 on the second mounting portion 20 of the base of the receiving member 4 for mounting the second relay 12 is also a groove, and its relative position on the second mounting portion 20 corresponds to the relative position of the second error-proofing portion 17 on the second relay 12. Therefore, the second error-proofing portion 17 can be inserted into the second mating portion 22.

[0084] As described above, because the first error-proofing part 14 and the second error-proofing part 17 are located in different positions, the first mating part 21 of the first mounting part 19 can only match the first error-proofing part 14 of the first relay 11, and cannot match the second error-proofing part 17 of the second relay 12. Therefore, the first relay 11 can only be installed on the first mounting part 19. Similarly, the second mating part 22 of the second mounting part 20 can only match the second error-proofing part 17 of the second relay 12, and cannot match the first error-proofing part 14 of the first relay 11. Therefore, the second relay 12 can only be installed on the second mounting part 20. This establishes a unique correspondence between the relay, the mounting part, and the controlled load. Similarly, in other embodiments, two or more error-proofing parts can be configured to have at least one different shape, structure, or position, which can also achieve the same error-proofing effect.

[0085] Example 2 of the electronic control system

[0086] Referring to Figure 9, Figure 9 shows the state in which the first relay 11 and the second relay 12 are installed in the receiving member 4 in Embodiment 2. As shown in Figure 9, in Embodiment 2, the position of the first error-proof part 15 on the first signal connection part 13 is the same as the position of the second error-proof part 18 on the second signal connection part 16, but the shapes of the first error-proof part 15 and the second error-proof part 18 are different. The first error-proof part 15 is a groove extending in the front-to-back direction, and the second error-proof part 18 is a groove extending in the left-to-right direction. Correspondingly, the first corresponding part 7 is set as a protrusion (not shown in the figure) that matches the shape of the first error-proof part 15, and the second corresponding part 8 is set as a protrusion (not shown in the figure) that matches the shape of the second error-proof part 18. Thus, Embodiment 2 can also establish a unique correspondence between the signal connection part and the signal output part. In the second embodiment, the first error-proof part 14 is provided on the first load terminal 25 located at the front, which is a notch located at the corner of the first load terminal 25 located at the front. The second error-proof part 17 is provided on the second load terminal 28 located at the rear, which is a notch located at the corner of the second load terminal 28 located at the rear. The first mounting part 19 is provided with a first mating part 21 that matches the first error-proofing part 14. The first mating part 21 is a protrusion that matches the notch of the first error-proofing part 14. The second mounting part 20 is provided with a second mating part 22 that matches the second error-proofing part 17. The second mating part 22 is a protrusion that matches the notch of the second error-proofing part 17. Thus, in this second embodiment, a unique correspondence between the relay, the mounting part, and the controlled load can also be established.

[0087] The other parts of Example 2 are the same as those of Example 1.

[0088] Example 3 of the electronic control system

[0089] Referring to Figures 10 and 11, which illustrate the first relay 11 in Embodiment 3, as shown in Figures 10 and 11, in Embodiment 3, the first mis-detection part 15 is located on the right side of the inner surface of the lower wall of the terminal housing of the first signal connection part 13 and protrudes upward. Correspondingly, the first corresponding part 7 is configured as a groove (not shown) that matches the front end of the first signal output part 5 with the first mis-detection part 15. The first error-proof part 14 is provided on the first housing 23 and located below the first connector 24. The first error-proof part 14 is a protrusion extending in the vertical direction.

[0090] Referring to Figures 12 and 13, which illustrate the second relay 12 in Embodiment 3, as shown in Figures 12 and 13, in Embodiment 3, the second mis-detection part 18 is located on the left side of the inner surface of the lower wall of the terminal housing of the second signal connection part 16 and protrudes upward. Correspondingly, the second corresponding part 8 is configured as a groove (not shown) at the front end of the second signal output part 6 that matches the second mis-detection part 18. The second error-proof part 17 is provided on the second housing 26 and located on the left side of the second connection part 27. The second error-proof part 17 is a protrusion extending in the vertical direction.

[0091] Referring to Figure 14, which shows the state in which the first relay 11 and the second relay 12 are installed in the receiving member 4 in Embodiment 3. As shown in Figure 14, the first mating portion 21 on the first mounting portion 19 of the base of the receiving member 4 for mounting the first relay 11 is a groove, and its relative position on the first mounting portion 19 corresponds to the relative position of the first error-proofing portion 14 on the first relay 11. Therefore, the first error-proofing portion 14 can be inserted into the first mating portion 21. The second mating portion 22 on the second mounting portion 20 of the base of the receiving member 4 for mounting the second relay 12 is also a groove, and its relative position on the second mounting portion 20 corresponds to the relative position of the second error-proofing portion 17 on the second relay 12. Therefore, the second error-proofing portion 17 can be inserted into the second mating portion 22.

[0092] The other parts of Example 3 are the same as those of Example 1.

[0093] As can be seen from the above description, Embodiment 3 can also establish a unique correspondence between the signal connection part and the signal output part, as well as a unique correspondence between the relay, the mounting part, and the controlled load.

[0094] Example 4 of the electronic control system

[0095] In Example 4, the error-proofing features on the signal connection parts are all color-coded. Corresponding parts on the corresponding signal output parts have the same color-coded features. Therefore, when the assembler observes the same color-coded features, they connect the signal output terminal to the corresponding signal connection part. The error-proofing features on the relays are all digitally coded. The mating parts on the corresponding mounting parts have the same digitally coded features. Therefore, when the assembler observes the same digitally coded features, they install the relay onto the corresponding mounting part.

[0096] The other parts of Example 4 are the same as those of Example 1.

[0097] In the above embodiments, by establishing the correspondence between the relay and the signal output unit and the correspondence between the controlled load and the relay, the signal output unit can be made to correspond with the controlled load, thereby reducing the occurrence of control errors.

[0098] In the above embodiments, by providing a mounting part corresponding to the controlled load on the housing 4, and by forming a second foolproof structure between the relay of each control chain and the mounting part, the correspondence between the controlled load and each relay is indirectly established. This will help the standardized production of the controlled load, while making full use of the function of the housing to house each relay.

[0099] In embodiments one through three, by configuring the corresponding part to only match the error-proofing part within the same control chain, each signal output part can only be mechanically connected to the corresponding signal connection part; similarly, by configuring the mating part to only match the error-proofing part within the same control chain, each relay can only be installed to the corresponding mounting part. Thus, through this rigid error-proofing method of mechanical matching, a unique match is ensured, thereby guaranteeing the uniqueness of the correspondence. Therefore, it is possible to more effectively reduce or even avoid control errors.

[0100] In Example 1, the differentiated design of each relay is concentrated on the connector. The signal connection part and the error prevention part are both set on the connector, which standardizes the design of the housing, thereby improving the interchangeability and versatility of the product and helping to reduce production costs.

[0101] In Example 4, the correspondence is established through visual markings, so there is no need to redesign the structure of the relay and related components, and therefore no need to re-open the mold, resulting in lower production costs.

[0102] Furthermore, in existing technologies, at least two mounting sections are often installed in an electrical box, each housing a relay to control different backend devices or terminals with different functions. Specifically, a signal control unit with multiple signal output terminals connects multiple controlled loads via multiple relays; each signal output terminal is electrically connected to a relay, and the relay is then electrically connected to its corresponding controlled load, enabling the signal control unit to ultimately control the controlled load. Since the relays often have the same function, and sometimes even the same or similar models, they often have similar or identical appearances, shapes, and structures. Therefore, installation errors are common, leading to errors in the control signals from the signal control unit when controlling the controlled loads via the relays. For example, a controlled load that should not be turned off may be turned off incorrectly, or a controlled load that should not be turned on may be turned on incorrectly, or a controlled load that should be turned off may not be turned off correctly, or a controlled load that should be turned on may not be turned on correctly. Especially in high-speed vehicles, such control errors can have fatal consequences. Furthermore, when only a few relays need to be installed in the electrical box, such as just one relay, it is crucial to install the relay into the correct mounting part if the electrical box has multiple mounting points. Installing the relay into the wrong mounting part will also cause the aforementioned problems. Therefore, how to ensure that the relays in the electrical box are installed into the correct mounting parts is an urgent problem to be solved.

[0103] This disclosure addresses the technical problems existing in the prior art by providing a relay and electrical box, which can greatly reduce or even avoid the occurrence of incorrect relay installation.

[0104] The technical solution adopted by this disclosure to solve its technical problem is: a relay, the relay having a fault-proof part, the fault-proof part including a protruding structure and / or a recessed structure, when the receiving part for mounting the relay has at least two mounting parts, the fault-proof part and the corresponding mounting part form a fault-proof cooperation, so that the relay can only be installed to the corresponding mounting part.

[0105] In some embodiments, the relay includes a housing, a relay body, a connector, and a load terminal. The relay body is housed in the housing. The connector is fixed to the housing and electrically connected to the coil of the relay body. The load terminal is fixed to the housing and electrically connected to the contact portion of the relay body. At least one of the connector, housing, and load terminal is provided with the error-proofing part.

[0106] In some embodiments, the relay includes a housing, a relay body, and load terminals. The relay body is housed in the housing, and the load terminals are fixed to the housing and electrically connected to a contact portion of the relay body. At least one of the housing and the load terminals is provided with the error-proofing portion.

[0107] In some embodiments, the connector includes a connector base and a signal connection portion fixed to the connector base, the connector base being fixed to the housing, and the connector base and / or the signal connection portion being provided with the error prevention portion.

[0108] In some embodiments, the error-proofing part is located at the root of the outer wall of the signal connection part, and the error-proofing part is a protruding structure and is elongated; or, the error-proofing part is disposed on the connector, and the error-proofing part is a protruding structure and is elongated.

[0109] In some embodiments, the error-proof part is disposed on the outer side of the housing, and the error-proof part is a protruding structure.

[0110] In some embodiments, the error prevention part is a notch provided at the corner of one of the load terminals.

[0111] This disclosure also provides an electrical box, including a receiving member having at least two mounting portions, and at least one relay as described above, the relay being mounted on a corresponding mounting portion, the corresponding mounting portion having a first mating portion that matches the error-proofing portion.

[0112] In some embodiments, the number of relays is at least two, and the shape, structure, size and position of the error-proofing part of each relay are different, such that any one relay is only suitable for installation in the corresponding mounting part.

[0113] In some embodiments, the receiving member is equipped with at least two signal output sections, the relay includes a connector having a signal connection section connected to a corresponding signal output section, and the signal connection section is provided with a foolproof part, the foolproof part including a protruding structure and / or a recessed structure, the corresponding signal output section is provided with a second mating part that matches the foolproof part, so that the signal connection section can only be connected to the corresponding signal output section.

[0114] Compared with the prior art, this disclosure has the following beneficial effects:

[0115] 1. Since the relay is provided with a mis-proof part, which includes a protruding structure and / or a recessed structure, when the electrical box used to install the relay has at least two mounting parts, the mis-proof part is used to form a mis-proof cooperation with the corresponding mounting parts, so that the relay can only be installed in the corresponding mounting part, thereby greatly reducing or even avoiding the occurrence of relay position installation errors.

[0116] 2. When the error-proofing part is located in the connector of the relay, the mold for the main structure of the relay (i.e., the mold used to produce the relay body and housing) can be universal, thereby saving costs. In particular, when the error-proofing part is a protruding structure and is elongated, the structure of the error-proofing part is simpler and easier to demold.

[0117] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments; however, the relays and electrical boxes of the present disclosure are not limited to the embodiments.

[0118] In this disclosure, the terms "first," "second," etc., are used only to distinguish similar objects and not to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," and "top / bottom" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this disclosure, not to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this disclosure. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0119] Furthermore, in the description of this disclosure, unless otherwise stated, "at least two" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. In the description of this disclosure, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0120] Relay Example 1

[0121] Please refer to Figures 15-18. The relay embodiment of this disclosure is provided with a mis-proof part 100. The mis-proof part 100 includes a protruding structure and / or a recessed structure. When the receiving member for mounting the relay has at least two mounting parts, the mis-proof part 100 forms a mis-proof cooperation with the corresponding mounting parts, so that the relay can only be installed in the corresponding mounting part, thereby greatly reducing or even avoiding the occurrence of incorrect relay installation.

[0122] In this embodiment, the relay includes a housing 200, a relay body (not shown in the figure), a connector 30, and a load terminal 40. The relay body is housed in the housing 200 and includes a magnetic circuit portion and a contact portion. The magnetic circuit portion includes a coil and an armature portion, and the contact portion includes a moving contact and a stationary contact. The coil receives a control signal to generate / change a magnetic field, thereby driving the armature assembly to close or open the moving contact and the stationary contact, thus controlling the on / off state of the controlled load connected to the contact portion. The connector 30 is fixedly connected to the housing 200 and electrically connected to the coil of the relay body. The load terminal 40 is fixedly connected to the housing 200 and electrically connected to the contact portion of the relay body. At least one of the connector 30, the housing 200, and the load terminal 40 is provided with a fault-prevention part 100. In other embodiments, the relay does not include the connector 30, and one of the relay housing 200 and the load terminal 40 is provided with the fault-prevention part 100.

[0123] As shown in Figures 15 and 16, the connector 30 includes a connecting base 31 and a signal connection portion 32 fixed to the connecting base 31. The connecting base 31 is fixed to the front sidewall of the housing 200. The connecting base 31 and / or the signal connection portion 32 are provided with the error-proofing portion 100. Specifically, in this embodiment, the error-proofing portion 100 is provided on the outer wall of the signal connection portion 32, and the error-proofing portion 100 is located at the root of the outer wall of the signal connection portion 32 (close to the housing 200). The error-proofing portion 100 is a protruding structure and is elongated, extending along the longitudinal direction of the signal connection portion 32. In some other embodiments, the shape and structure of the error-proofing portion 100 are not limited to this.

[0124] In this embodiment, the error prevention part 100 is specifically located on the top left side of the outer wall of the signal connection part 32, but it is not limited to this. The error prevention part 100 can also be set to other positions on the outer wall of the signal connection part 32 according to actual needs, such as the top right side of the signal connection part 32, as shown in Figures 17 and 18.

[0125] A horizontal reinforcing plate 33 connects the aforementioned connector 31 to the right end of the signal connection portion 32. The signal connection portion 32 is provided with a foolproof part 321, which includes a protruding structure and / or a recessed structure. When the signal connection portion 32 is connected to a corresponding signal output portion, the foolproof part 321 forms a mistake-proof fit with the signal output portion, ensuring that the signal connection portion 32 can only be connected to the corresponding signal output portion. In this embodiment, as shown in Figures 15 and 16, the foolproof part 321 is a protruding structure and is located on the inner wall of the signal connection portion 32, specifically at the left end of the bottom of the inner wall of the signal connection portion 32, and the cross-section of the foolproof part 321 is approximately trapezoidal. In other embodiments, the shape, structure, and position of the foolproof part 321 are not limited to this. The foolproof part 321 can be set to other positions on the inner wall of the signal connection portion 32 according to actual needs, for example, at the right end of the bottom of the inner wall of the signal connection portion 32, as shown in Figures 19 and 23.

[0126] Relay Example 2

[0127] Please refer to Figures 19 and 20. The difference between the second embodiment of the relay disclosed herein and the first embodiment above is that the error prevention part 100 is provided on the connecting seat 31 of the connector 30, and the error prevention part 100 is a protruding structure, and is long and extends in the vertical direction.

[0128] In this embodiment, a horizontal reinforcing plate 33 is also connected between the right end of the connector 31 and the signal connection part 32. The error-proof part 100 is connected to and perpendicular to the reinforcing plate 33, and the error-proof part 100 is located at the right end of the reinforcing plate 33 away from the signal connection part 32, as shown in FIG19. In some other embodiments, the position of the error-proof part 100 is not limited to this, and the error-proof part 100 can also be set at other positions of the connector 31, for example, the error-proof part 100 can be set at the left side of the middle of the reinforcing plate 33, as shown in FIG20.

[0129] Relay Example 3

[0130] Please refer to Figures 21-25. The difference between the relay three disclosed herein and any of the above embodiments is that the error-proof part 100 is provided on the outer side of the housing 200, and the error-proof part 100 is a protruding structure. Specifically, the error-proof part 100 is provided on the outer side of the housing 200 where the connector 30 is fixed, and the error-proof part 100 is square-shaped and located on the right side of the connector 30, as shown in Figure 21. In some other embodiments, the shape, size, position, etc. of the error-proof part 100 are not limited to this. The error-proof part 100 can also be provided at other positions on the outer side of the housing 200, for example, the error-proof part 100 can be provided below the connector 30, and the height of the error-proof part 100 can be reduced, as shown in Figures 22 and 23; the error-proof part 100 can be provided on one side (left or right) of the connector 30, and the height of the error-proof part 100 can be increased, as shown in Figures 24 and 25.

[0131] Relay Example 4

[0132] Please refer to Figure 26. The difference between the relay embodiment 4 of this disclosure and any of the above embodiments is that the error prevention part 100 is a notch provided at the corner of one of the load terminals 40.

[0133] Relay Example 5

[0134] Please refer to Figure 27. The difference between the relay five disclosed herein and any of the above embodiments is that the error prevention includes both the protruding structure 110 and the recessed structure 120; correspondingly, the first mating part provided on the mounting part 50 also includes a protruding structure 52 and a recessed structure 51. The protruding structure 110 of the error prevention part 100 matches the recessed structure 51 of the first mating part, and the recessed structure 120 of the error prevention part 100 matches the protruding structure 52 of the first mating part.

[0135] Relay Example 6

[0136] Please refer to Figures 28-33. The relay six disclosed herein is similar to the second embodiment described above in that the error-proof part 100 is also provided on the connector base 31 of the connector 30, and the error-proof part 100 is a protruding structure, elongated in shape and extending in the vertical direction. However, in this embodiment, no horizontal reinforcing plate 33 is provided between the connector base 31 and the signal connection part 32.

[0137] In this embodiment, the error-proofing part 100 is located on the right side of the signal connection part 32, and the length and position of the error-proofing part 100 can be set according to actual needs. For example, the error-proofing part 100 can be made shorter and located at any position on the right side of the signal connection part 32, such as the upper left corner, lower left corner, upper right corner, or lower right corner, as shown in Figures 28-31. Alternatively, the error-proofing part 100 can be made longer and located on the right side of the signal connection part 32, away from or close to the signal connection part 32, as shown in Figures 32 and 33.

[0138] Electrical box embodiment

[0139] The electrical box embodiment disclosed herein includes a receiving member (not shown in the figure), which has at least two mounting portions and at least one relay as described in any of the above embodiments of the present disclosure. The relay is mounted on a corresponding mounting portion, and the corresponding mounting portion has a first mating portion that matches the error-proofing portion 100. That is, when the error-proofing portion 100 is a protruding structure, the first mating portion is a recessed structure; when the error-proofing portion 100 is a recessed structure, the first mating portion is a protruding structure; when the error-proofing portion 100 includes both a protruding structure and a recessed structure, the first mating portion also includes both a recessed structure and a protruding structure.

[0140] In this embodiment, the number of relays is at least two, and the shape, structure, size, and position of the error-proof part 100 of each relay are different in at least one of them, so that any one relay is only suitable for installation in a corresponding mounting part. Specifically, in this embodiment, the number of relays is two. In some other embodiments, the number of relays is not limited to two.

[0141] The two relays can be any two types of relays described in Embodiment 1, or two types of relays described in Embodiment 2, or any two of the three types of relays described in Embodiment 3. When using the relays in Embodiment 4, the error-proof parts 100 of the two relays can be set on different load terminals 40. Therefore, this disclosure establishes a unique correspondence between the relays and the mounting parts, which can prevent the occurrence of incorrect installation of any relay.

[0142] In this embodiment, the receiving member is equipped with at least two signal output sections (not shown in the figures). The signal connection section 32 on the connector 30 of each relay is connected to the corresponding signal output section, and the foolproof part 321 provided on the signal connection section 32 can match the second mating part provided on the corresponding signal output section, so that the signal connection section 32 can only be connected to the corresponding signal output section. Since there are multiple relays (specifically two, but not limited to this), by making at least one of the shapes, structures, sizes, and positions of the foolproof parts 321 on each signal connection section 32 different, the signal connection section 32 of any relay can be adapted to be connected only to the corresponding signal output section. In this embodiment, the foolproof parts 321 on the signal connection sections 32 of the two relays can be implemented using the foolproof parts 321 shown in Figures 16 and 19, or they can be implemented using the foolproof parts 321 shown in Figures 28 and 29, 30 and 31, 32 and 33. Therefore, this disclosure also establishes a unique correspondence between relays and signal output sections, which can prevent the signal connection section 32 of any relay from being connected to a non-corresponding signal output section.

[0143] In other embodiments, the number of relays is one. By providing a fault-proofing part on the relay, the relay can be installed in a corresponding mounting part, so that the relay and one of the multiple mounting parts of the housing are uniquely associated, thereby avoiding the situation where the relay is installed incorrectly.

[0144] The above embodiments are only used to further illustrate a relay and electrical box of this disclosure, but this disclosure is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this disclosure shall fall within the protection scope of the technical solution of this disclosure.

[0145] The description of the above specification and embodiments is used to explain the scope of protection of this disclosure, but does not constitute a limitation on the scope of protection of this disclosure.

Claims

1. An electronic control system, characterized in that its include: A signal control unit is provided with at least two signal output sections, which are used to output control signals; A controlled load unit includes at least two controlled loads, wherein the controlled loads are configured with corresponding signal output units; A status control unit includes at least two relays, each relay corresponding to at least two signal output units. Each relay is provided with a signal connection unit, which is mechanically and electrically connected to the corresponding signal output unit to receive control signals. The at least two relays are also electrically connected to at least two controlled loads to control the operating state of the controlled loads according to the control signals. and A receiving element for accommodating at least two relays, the receiving element having at least two mounting portions corresponding to at least two controlled loads, and at least two relays being mounted to the corresponding at least two mounting portions; The corresponding signal output section, relay, controlled load and mounting section form a control chain; a first foolproof structure is formed between the signal output section and the signal connection section of each control chain, so that the signal output section of any control chain is only suitable for mechanical connection to the signal connection section of that control chain; a second foolproof structure is formed between the relay and the mounting section of each control chain, so that the relay of any control chain is only suitable for installation on the mounting section of that control chain.

2. The electronic control system as described in claim 1, characterized in that: The first foolproof structure includes a foolproof part on the signal connection part and a corresponding part on the signal output part. The corresponding part of any control chain is configured to match only the foolproof part of the control chain, so that any signal output part can only be mechanically connected to the corresponding signal connection part. The second mistake-proof structure includes a mistake-proof part on the relay and a mating part on the mounting part. The mating part of any control chain is configured to match only the mistake-proof part of that control chain, so that any relay can only be installed on the corresponding mounting part.

3. The electronic control system as described in claim 2, characterized in that, The signal output section and signal connection section of the same control chain are plugged in and fitted together, and the foolproof part is a protrusion and / or recess provided on the signal connection section.

4. The electronic control system as described in claim 3, characterized in that, The shape, structure, and position of the foolproof part on the signal connection part of each control chain are different, at least one of them.

5. The electronic control system as described in claim 2, characterized in that, The error prevention part is a protrusion and / or recess provided on the relay.

6. The electronic control system as described in claim 5, characterized in that, The shape, structure, and position of the error-proofing components in each control chain differ at least once.

7. An electronic control device, characterized in that, It includes a housing and at least two relays, each of the at least two relays having a signal connection portion for receiving control signals, and at least one of the shapes and structures of the signal connection portions of the at least two relays being different from each other; the at least two relays are mounted on mounting portions corresponding to the housing, and the portions of the at least two relays adapted to connect to the mounting portions are each provided with error-proofing portions, and at least one of the shapes, structures, and positions of the error-proofing portions of the at least two relays being different from each other, so that the at least two relays can only be mounted to the corresponding mounting portions.

8. The electronic control device as described in claim 7, characterized in that, The relay includes a housing, a relay body, and a connector. The housing is used to house the relay body, and the connector is fixedly connected to the housing. The signal connection part and the error prevention part are both disposed on the connector.

9. The electronic control device as described in claim 7, characterized in that, The relay includes a housing, a relay body, a connector, and a load terminal. The housing houses the relay body, the connector is fixedly connected to the housing, the load terminal is used to control the on / off state of the controlled load, the load terminal is fixedly connected to the housing and electrically connected to the relay body, the signal connection part is disposed on the connector, and the error prevention part is disposed on the housing and / or the load terminal.

10. The electronic control device as described in claim 7, characterized in that, The error prevention part is a protrusion and / or recess provided on the relay.

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