Coil unit and electric valve

Abstract

A coil unit and an electric valve are disclosed. The coil unit (100) includes a control box (1). The control box (1) includes a first housing part (11) and a second housing part (12) that are fixedly connected. The second housing part (12) includes an insertion port part (122) and a first connection member (121). The insertion port part (122) has a second chamber (1221). The first connection member (121) has a first end part (1211) and a second end part (1212). A part of the first end part (1211) is located in the first chamber (13), and a part of the second end part (1212) is located in the second chamber (1221). The first end part (1211) is connected to be crimped to the electronic control board (3). The first connection member (121) can be electrically connected and / or signal-connected to the electronic control board (3). By arranging it in this way, the installation of the coil unit is simplified. Also, when it is necessary to replace the number of the first connection members (121), it is not necessary to re-develop the entire coil unit, the development cost of the coil unit can be reduced, and further, the development cost of the electric valve can be reduced.

Description

Technical Field

[0001] This application claims the priority of two Chinese patent applications, one filed with the China National Patent Office on July 1, 2022, with the application number 202210773656.1 and the invention title "Coil Unit and Electric Valve", and the other filed with the China National Patent Office on July 26, 2022, with the application number 202210882659.9 and the invention title "Control Device and Electric Valve", and all of its content is incorporated herein by reference.

[0002] The present invention relates to the technical field of fluid control, and specifically to a coil unit and an electric valve.

Background Art

[0003] An electric valve includes a coil unit, and the coil unit includes a stator member, a control box, and an electronic control board. This electronic control board is located within a space formed from the control box, and this control box includes a first housing part and a second housing part that are fixedly connected. The first housing part has an insertion port, and this insertion port is provided with pins for electrical connection or signal connection to an external device. And the first housing part is integrally formed with an injection molded body poured around the outer periphery of the stator member or fixed in other ways. When it is necessary to change the number of pins, the first housing part, or the combination of the first housing part and the stator member, has to be newly developed, which is disadvantageous for reducing the development cost of the coil unit or the electric valve.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a coil unit and an electric valve, simplify the installation of the coil unit, and reduce the development cost of the coil unit or the electric valve.

Means for Solving the Problems

[0005] To achieve the above object, the coil unit of the present invention includes a control box, a stator member, and an electronic control board. The control box has a first chamber, the electronic control board is located in the first chamber, the stator member has a first pin connected to the electronic control board, the control box includes a first housing part and a second housing part that are fixedly connected, the second housing part includes an insertion port part and a first connection member, the insertion port part has a second chamber, the first connection member has a first end part and a second end part, a part of the first end part is located in the first chamber, a part of the second end part is located in the second chamber, the first end part is connected so as to be crimped to the electronic control board, and the first connection member can be electrically connected and / or signal-connected to the electronic control board.

[0006] An electric valve including the above coil unit, the electric valve further includes a valve member and a valve body block that are fixedly connected, and the coil unit is fixedly connected to the valve body block or the valve member.

Advantages of the Invention

[0007] In the embodiment provided by the present invention, the control box includes a first housing part and a second housing part that are fixedly connected, the second housing part includes an insertion port part and a first connection member, the insertion port part has a second chamber, the first connection member has a first end part and a second end part, a part of the first end part is located in the first chamber, a part of the second end part is located in the second chamber, the first end part is connected so as to be crimped to the electronic control board, and the first connection member can be electrically connected and / or signal-connected to the electronic control board. By arranging in this way, the installation of the coil unit is simplified, and when it is necessary to adjust the number of the first connection members, it is not necessary to re-develop the entire coil unit, the development cost of the coil unit can be reduced, and further, the development cost of the electric valve can be reduced.

Brief Description of the Drawings

[0008]

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Embodiments for Carrying Out the Invention

[0009] Hereinafter, the present invention will be further described with reference to the drawings and embodiments.

[0010] As shown in FIGS. 1 to 3, a first embodiment of the coil unit 100 is shown. The coil unit 100 in this embodiment includes a control box 1, a stator member 2, and an electronic control board 3. The control box 1 includes a first chamber 13. The electronic control board 3 is located in the first chamber 13. The stator member 2 includes a first pin 21 connected to the electronic control board 3. And the first pin 21 in this embodiment is fixed to the electronic control board 3 by welding. In other embodiments, it may be fixed by crimping in a manner such as a fish-eye pin. One end of some of the first pins 21 is connected to the winding inside the stator member 2, and the other end is connected to the electronic control board 3. The number of the first pins 21 may be set according to needs. And the control box 1 includes a first housing part 11 and a second housing part 12 that are fixedly connected. The coil unit 100 in this embodiment includes an injection molding part 4 that covers at least a part of the stator member 2. The injection molding part 4 and the first housing part 11 in this embodiment are integrally injection molded. Of course, in other embodiments, the injection molding part 4 and the first housing part 11 may be separately molded and then fixed by means such as welding, locking, and bolt connection. In addition, the second housing part 12 includes a first connection member 121 and an insertion port part 122. The insertion port part 122 is provided with a second chamber 1221. The first connection member 121 includes a first end part 1211 and a second end part 1212. A part of the first end part 1211 is located in the first chamber 13, and a part of the second end part 1212 is located in the second chamber 1221. The first end part 1211 is connected to be crimped to the electronic control board 3. The first end part 1211 of the first connection member 121 can be electrically connected and / or signal-connected to the electronic control board 3, and the second end part 1212 of the first connection member 121 can be electrically connected or signal-connected to an external device. By arranging in this way, the first end part 1211 is connected to be crimped to the electronic control board 3, simplifying the connection between the first connection member 121 and the electronic control board 3. Furthermore, the connection between the first housing part 11 and the second housing part 12 is simplified. Also, when it is necessary to replace the number of the first connection members 121, there is no need to redesign the first housing part 11 or the combined body of the first housing part 11 and the stator member 2. It is only necessary to change the second housing part 12 and the electronic control board 3 within a small range. For example, by adjusting the number of the first connection members 121, that is, there is no need to re-develop and design the entire coil unit, and the development cost of the coil unit 100 can be reduced.

[0011] As shown in FIG. 2, in this embodiment, the electronic control board 3 is located above the stator member 2. The direction parallel to the electronic control board 3 is defined as the lateral direction. The directions in the present invention only indicate relative positions.

[0012] As shown in FIGS. 2 and 3, in this embodiment, the first housing part 11 and the second housing part 12 are fixed by welding. The welding methods include laser welding, ultrasonic welding, etc. Specifically, in this embodiment, the first housing part 11 and the second housing part 12 are fixed by laser welding and sealed by welding. A sealing member may be further provided between the first housing part 11 and the second housing part 12. In other embodiments, the first housing part 11 and the second housing part 12 are fixed and connected by a buckle, and the space between the first housing part 11 and the second housing part 12 may be sealed by a sealing member.

[0013] As shown in FIGS. 2 to 7, the second housing part 12 in this embodiment further includes a plate body part 123, and the second housing part 12 is fixedly connected to the first housing part 11 by the plate body part 123. The plate body part 123 and the insertion port part 122 in this embodiment are integrally injection-molded. Regarding the number of the first connection members 121, they are installed according to needs. For example, 3, 4, or 5 are installed. The main body part of the first connection member 121 is made of a metal material and can exert an electrical conduction function. During injection molding, the first connection member 121 is used as an injection molding insert, and the second housing part 12 is integrally injection-molded. A part of the first end 1211 and the second end 1212 of the first connection member 121 is coated with an injection molding material, and the first connection member 121 is fixedly connected to the insertion port part 122 by injection molding. The first connection member 121 in this embodiment includes an adapter part 1213, and at least a part of the adapter part 1213 is coated with an injection molding material. In other embodiments, the first connection member 121 does not have to be fixed to the insertion port part 122 by injection molding. It is pre-injection-molded as a single row, that is, the pin headers are fixed in a single row by an injection molding connection part. The injection molding connection part coats the adapter part 1213 between the first end 1211 and the second end 1212. Several through holes for the first end 1211 to pass through are reserved in the insertion port part 122, or through holes for the injection molding connection part to pass through are reserved in advance. Furthermore, the connection strength and sealing performance between the first connection member 121 and the insertion port part 122 may be improved by methods such as adding an adhesive or welding. As shown in FIGS. 14 to 19, in one embodiment where the first connection member 121 is injection-molded in a row in advance, the first connection member 121 is injection-molded in a row in advance to form an injection molding unit 8. The injection molding unit 8 includes the first connection member 121 and an injection molding connection portion. In the insertion port portion 122, several through holes 1222 for the first end portion 1211 of the first connection member 121 to pass through are reserved. Further, after the first end portion 1211 passes through the through hole 1222, the gap between the first end portion 1211 and the through hole may be sealed by means such as an adhesive, welding, or adhesive filling to improve the connection strength. During installation, first, the injection molding unit 8 is assembled to the electronic control board 3, and then the second housing portion 12 is assembled to the first housing portion 11. When assembling the second housing portion 12, the first end portion 1211 of the first connection member 121 passes through the through hole 1222 of the insertion port portion 122, and the first end portion 1211 is connected to be crimped to the electronic control board 3. The first connection member 121 can be electrically connected and / or signal-connected to the electronic control board 3. For other structures, reference may be made to the above or below other embodiments. As shown in FIG. 20, in another embodiment where the first connection member 121 is injection-molded in a row in advance, the first connection member 121 is injection-molded in a row in advance to form an injection molding unit 8. The injection molding unit 8 includes the first connection member 121 and an injection molding connection portion. In the insertion port portion 122, through holes 1222 for the injection molding unit 8 to pass through are reserved. The injection molding unit 8 is fixed and connected to the insertion port portion 122 through the through holes, or is connected so as to be position-limited. Then, during installation, first, the injection molding unit 8 is assembled to the second housing portion 12. After the two are assembled, they are engaged with the first housing portion 11 and the electronic control board 3. A sealing member 82 for sealing may be further provided between the injection molding unit 8 and the insertion port portion 122. The first end portion 1211 is connected to be crimped to the electronic control board 3. The first connection member 121 can be electrically connected and / or signal-connected to the electronic control board 3. For other structures, reference may be made to the above or below other embodiments.

[0014] As shown in FIGS. 2 to 8, the first end portion 1211 in this embodiment is in the form of a fish-eye pin. The first end portion 1211 includes a first pin portion 1214, and the first pin portion 1214 includes a first pin hole 1215. The electronic control board 3 includes a first through hole 31. The first end portion 1211 is crimped and connected to the electronic control board 3 by the first pin portion 1214. The first pin portion 1214 is press-fitted into the first through hole 31. After being crimped, the first pin hole 1215 shrinks and deforms, and after the first pin portion 1214 is crimped to the wall forming the first through hole 31, they are closely engaged. The wall forming the first through hole 31 is made of a metal material, whereby the first connection member 121 can be electrically connected to the electronic control board 3. By arranging in this way, the connection between the first connection member 121 and the electronic control board 3 can be simplified, and further, the attachment of the second housing portion 12 and the first housing portion 11 can be simplified.

[0015] As shown in FIGS. 2, 3, 7 to 10, the second housing portion 12 in this embodiment includes several position limiting portions 124 that protrude downward from the lower end surface of the second housing portion 12. And the position limiting portion 124 in this embodiment is arranged to protrude downward from the lower end surface of the insertion port portion 122. The position limiting portion 124 is located between adjacent first end portions 1211 or is arranged relatively close to the first end portion 1211. When the first end portion 1211 and the electronic control board 3 are crimped to a predetermined position, the position limiting portion 124 abuts and engages with the electronic control board 3, whereby it can be ensured that the first end portion 1211 is sufficiently crimped. In other embodiments, the position limiting portion 124 may be formed to coat a part of the upper part of the first end portion 1211 by injection molding.

[0016] As shown in FIGS. 2 to 7, the first housing portion 11 in this embodiment further includes a first support portion 111, a second support portion 112, and a third support portion 113. Further, the first housing portion 11 further includes a first side wall portion 115, a second side wall portion 116, and a third side wall portion 117. The first side wall portion 115 and the second side wall portion 116 are arranged opposite to each other, and the third side wall portion 117 is connected to the first side wall portion 115 and the second side wall portion 116 respectively. The first support portion 111 is arranged close to the first side wall portion 115, and the second support portion 112 is arranged close to the second side wall portion 116. In this embodiment, the first support portion 111 and the second support portion 112 are symmetrically arranged. The third support portion 113 is arranged close to the third side wall portion 117. The electronic control board 3 is arranged in contact with the first support portion 111, the second support portion 112, and the third support portion 113 respectively. The first support portion 111, the second support portion 112, and the third support portion 113 are located at different positions to stably support the electronic control board 3.

[0017] As shown in FIGS. 2 to 7, the first housing portion 11 in this embodiment further includes a fourth support portion 114. The third support portion 113 is located between the first end portion 1211 and the third side wall portion 117. The third support portion 113 is located on the side of the first end portion 1211 that is relatively close to the third side wall portion 117. The fourth support portion 114 is located on the side of the first end portion 1211 that is relatively far from the third side wall portion 117. In other words, the third support portion 113 is located on the right side of the first end portion 1211 in FIG. 3, and the fourth support portion 114 is located on the left side of the first end portion 1211 in FIG. 3. The electronic control board 3 is in contact with the fourth support portion 114. The first housing portion 11 is provided with a first concave groove 118 located between the third support portion 113 and the fourth support portion 114. The portion of the first end portion 1211 that passes through the electronic control board 3 is housed in the first concave groove 118. By arranging in this way, it is possible to prevent the first end portion 1211 from being interfered, and by arranging the third support portion 113 and the fourth support portion 114, it is possible to prevent the electronic control board 3 from being pressed and damaged during crimping. In this embodiment, the opening of the insertion port 122 is provided to face upward, thereby reducing the lateral length of the coil unit 100. Also, the female joint of the external device that engages with the insertion port 122 is engaged with the insertion port 122 from top to bottom, whereby it is possible to prevent the coil unit 100 from interfering with the lateral member. In other embodiments, according to needs, the opening of the insertion port 122 may be provided laterally.

[0018] As shown in FIGS. 2 to 7, the first housing portion 11 in this embodiment further includes several positioning portions 1111 disposed close to the third side wall portion 117. The electronic control board 3 is provided with a positioning groove 32. Some of the positioning portions 1111 are received in the positioning groove 32, and the positioning portions 1111 are engaged with the positioning groove 32 to provide positioning for the attachment of the electronic control board 3, and the attachment accuracy of the electronic control board 3 can be improved. The number of the positioning portions 1111 in this embodiment is two and they are symmetrically arranged. By arranging them in this way, the external force received by the electronic control board 3 can be balanced.

[0019] As shown in FIGS. 2 to 7, the first housing portion 11 in this embodiment includes several positioning posts 119, and the second housing portion 12 includes positioning hole posts 125 corresponding to the number of the positioning posts 119. And the positioning hole post 125 is provided with a positioning hole (not shown in the figure) whose opening faces downward. The positioning hole post 125 is located on the lower end surface of the second housing portion 12. The upper end portion of the positioning post 119 is located in the positioning hole, and the positioning post 119 is in contact with or clearance-fitted to the side wall forming the positioning hole to limit the lateral relative position between the first housing portion 11 and the second housing portion 12. The number of the positioning posts 119 in this embodiment is two, and the two positioning posts 119 are symmetrically arranged. In other embodiments, the positioning hole post 125 may not be provided, and the lower surface of the second housing portion 12 may directly form a concave positioning hole.

[0020] As shown in FIGS. 2 to 7, in the second embodiment of the coil unit 100, compared with the first embodiment, the first end portion 1211 in this embodiment is columnar, and one end of the first end portion 1211 close to the electronic control board 3 is provided with a guide portion. The electronic control board 3 is provided with a first through hole 31. The first end portion 1211 is pressure-bonded and connected to the electronic control board 3, press-fitted into the first through hole 31, and closely engaged with the wall forming the first through hole 31. The outer diameter of the guide portion close to the electronic control board 3 gradually shrinks, and the guide portion provides guidance for the pressure-bonding of the first end portion 1211.

[0021] As shown in FIGS. 2 to 7, in the third embodiment of the coil unit 100, compared with the first embodiment, the electronic control board 3 in this embodiment is provided with an elastic connector (not shown). The first end portion 1211 is pressure-bonded and connected to the electronic control board 3 by the elastic connector. The first end portion 1211 is press-fitted into the elastic connector, and this elastic connector expands. The first end portion 1211 is in close contact with the inner wall of the elastic connector. The elastic connector may have, for example, a substantially petal-shaped structure composed of several elastic metal pieces.

[0022] As shown in FIGS. 11 and 12, the present invention provides an embodiment of an electric valve 101. The electric valve 101 includes the above-mentioned coil unit 100 and further includes a valve member 5 and a valve body block 6 that are fixedly connected. The coil unit 100 is fixedly connected to the valve body block 6 or removably connected. The fixing methods include bolt connection, locking fixation, etc. Alternatively, the coil unit 100 is fixedly connected to the valve member 5, and the two are fixedly connected to the valve body block 6 as a whole or removably connected. The valve member 5 includes a valve seat member 51, a rotor unit 52, a valve body unit 53, a nut unit 54, and a sleeve 55. The valve body unit 53 is connected to the rotor unit 52. The stator member 2 is located outside the sleeve 55, the rotor unit 52 is located inside the sleeve 55, and by passing a predetermined current through the stator member 2, an exciting magnetic field is generated to rotate the rotor unit 52, and the rotor unit 52 rotates the valve body unit 53. And this valve body unit 53 is screwed to the nut unit 54, converting the rotation of the rotor unit 52 into the axial movement of the valve body unit 53 relative to the valve seat member 51. The valve seat member 51 is provided with a valve port 511, and the valve body unit 53 can adjust the flow area of the valve port 511, and further adjust the flow rate of the working medium passing through the valve port 511. As shown in FIG. 13, the electric valve in this embodiment further includes a connecting member 7. And this connecting member 7 includes a connecting plate 71 and a locking portion 72. The connecting plate 71 is fixed and connected to the coil unit 100, and the connection methods include thermal caulking, ultrasonic welding, etc. The locking portion 72 has a certain elasticity. By this locking portion 72, the connecting member 7 is detachably connected to the valve body block 6. The locking portion 72 includes a locking hook 721 and a removal portion 722. The locking hook 721 is engaged with the valve body block 6 to prevent the coil unit 100 from detaching from the valve body block 6. By engaging with the removal portion 722 using an external tool, the locking portion 72 is lifted to detach the coil unit 100 from the valve body block 6.

[0023] The valve body block 6 in this embodiment is formed individually. The valve body block 6 in other embodiments may be a part of other members, for example, a part of the connection block in an integrated unit, or a part of a heat exchange unit.

[0024] As shown in FIG. 21, in another embodiment of the coil unit 100, the second housing portion 12 includes a plate body portion 123 and an insertion port portion 122. The second housing portion 12 is fixed and connected to the first housing portion 11 by the plate body portion 123. The plate body portion 123 and the insertion port portion 122 have a separate structure. The plate body portion 123 is fixed and connected to the insertion port portion 122. The fixing methods include welding, riveting, or riveting and welding, or riveting and adhesion, etc. The plate body portion 123 is provided with a through hole 1222. The insertion port portion 122 passes through the plate body portion 123. Further, a sealing member 82 for sealing may be provided between the insertion port portion 122 and the plate body portion 123. The first connection member 121 is used as an injection molding insert to form the insertion port portion 122 by injection molding. A part of the first end portion 1211 and the second end portion 1212 is coated with injection molding material. The first end portion 1211 is connected to be crimped to the electronic control board 3. The first connection member 121 can be electrically connected and / or signal connected to the electronic control board 3. When the first connection member 121 is damaged, it is only necessary to replace the insertion port portion 122 and the second housing portion 12 including the first connection member 121, which can reduce the maintenance cost and facilitate the maintenance of the coil unit 100. When it is necessary to replace the number of the first connection members 121, there is no need to newly develop a new product. It is only necessary to redesign the second housing portion 12 including the insertion port portion 122 and the first connection member 121, which can reduce the development cost.

[0025] Here, the above embodiments are for explaining the present invention and are described in detail. However, corrections or equivalent substitutions can be made to the present invention. All improvements that do not depart from the spirit and scope of the present invention fall within the scope of the claims of the present invention.

Claims

1. A coil unit including a control box, a stator member, and an electronic control board, wherein the control box includes a first chamber, the electronic control board is located in the first chamber, the stator member includes a first pin connected to the electronic control board, the control box includes a first housing part and a second housing part that are fixedly connected, the second housing part includes an insertion port part and a first connection member, the insertion port part includes a second chamber, the first connection member includes a first end part and a second end part, a part of the first end part is located in the first chamber, a part of the second end part is located in the second chamber, the first end part is connected so as to be crimped to the electronic control board, the first connection member is capable of making an electrical connection and / or a signal connection to the electronic control board, characterized in that it is a coil unit.

2. The first end part includes a first pin part, the first pin part includes a first pin hole, the electronic control board includes a first through hole, the first end part is crimped and connected to the electronic control board by the first pin part, the first pin part is press-fitted into the first through hole, and after crimping, the first pin hole contracts and deforms, and the first pin part is in close contact engagement with the wall forming the first through hole, characterized in that it is the coil unit according to Claim 1.

3. The first end part is columnar, one end of the first end part approaching the electronic control board includes a guide part, the electronic control board includes a first through hole, the first end part is crimped and connected to the electronic control board, press-fitted into the first through hole, and in close contact engagement with the wall forming the first through hole, the outer diameter of the guide part approaching the electronic control board gradually shrinks, the guide part provides guidance for the crimping of the first end part, characterized in that it is the coil unit according to Claim 1.

4. The electronic control board includes an elastic grommet, the first end part is crimped and connected to the electronic control board by the elastic grommet, the first end part is press-fitted into the elastic grommet, the elastic grommet expands, the first end part is in close contact with the inner wall of the elastic grommet, characterized in that it is the coil unit according to Claim 1.

5. The first housing part and the second housing part are fixed by welding and sealed by a welding surface, or sealed by a welding surface and a sealing member, or the first housing part and the second housing part are fixed and connected by a buckle, The coil unit according to any one of claims 1 to 4, characterized in that a sealing member seals between the first housing part and the second housing part.

6. The second housing part further includes a plate body part, The second housing part is fixed and connected to the first housing part by the plate body part, The plate body part and the insertion port part are integrally injection-molded, and the first connecting member is used as an injection-molded insert to integrally injection-mold the second housing part, The coil unit according to claim 5, characterized in that a part between the first end part and the second end part is coated with an injection-molded material.

7. The second housing part further includes a plate body part, The second housing part is fixed and connected to the first housing part by the plate body part, The plate body part and the insertion port part are integrally injection-molded, The first connecting member is injection-molded in advance in a row to form an injection-molded connecting part, and several through-holes for the first end part to pass through or through-holes for the injection-molded connecting part to pass through are reserved in advance in the insertion port part. The coil unit according to claim 5, characterized in that.

8. The first housing part further includes a first support part, a second support part and a third support part, The first housing part further includes a first side wall part, a second side wall part and a third side wall part, The first side wall part and the second side wall part are arranged opposite to each other, The third side wall part is connected to the first side wall part and the second side wall part respectively, The first support part is arranged close to the first side wall part, The second support part is arranged close to the second side wall part, The third support part is arranged close to the third side wall part, The electronic control board is arranged in contact with the first support part, the second support part and the third support part respectively. The coil unit according to claim 6 or claim 7, characterized in that.

9. The first housing part further includes a fourth support part, The third support part is located on a side relatively close to the third side wall part of the first end part, The fourth support portion is located on a side relatively away from the third side wall portion of the first end portion. The electronic control board is abutted against the fourth support portion. The first housing portion includes a first concave groove located between the third support portion and the fourth support portion. The coil unit according to claim 8, wherein a portion of the first end portion passing through the electronic control board is housed in the first concave groove.

10. The coil unit according to any one of claims 6 to 9, wherein the opening of the insertion port is provided so as to face upward or in a lateral direction.

11. The first housing portion includes several positioning posts. The second housing portion includes positioning holes corresponding to the number of the positioning posts. The positioning holes are located on the lower end surface of the second housing portion. The upper end portions of the positioning posts are located in the positioning holes. The coil unit according to claim 10, wherein the positioning posts contact the side walls forming the positioning holes or are fitted with a clearance to limit the lateral relative position between the first housing portion and the second housing portion.

12. The second housing portion includes several position limiting portions. The position limiting portions are arranged to protrude downward from the lower end surface of the second housing portion. The position limiting portions are located between adjacent first end portions or are arranged relatively close to the first end portions. The coil unit according to claim 10, wherein when the first end portion and the electronic control board are crimped to a predetermined position, the position limiting portions are abutted against and engaged with the electronic control board.

13. The second housing portion includes several position limiting portions. The position limiting portions are arranged to protrude downward from the lower end surface of the second housing portion. The position limiting portions are located between adjacent first end portions or are arranged relatively close to the first end portions. The coil unit according to claim 11, wherein when the first end portion and the electronic control board are crimped to a predetermined position, the position limiting portions are abutted against and engaged with the electronic control board.

14. The second housing portion further includes a plate body portion and an insertion port portion. The second housing portion is fixed and connected to the first housing portion by the plate body portion. The plate body portion and the insertion port portion have a separate structure. The plate body part is fixedly connected to the insertion port part, and the insertion port part is formed by injection molding with the first connection member as an injection molding insert. The coil unit according to claim 5, wherein a part of the first end part and the second end part is coated with an injection molding material.

15. An electric valve, comprising the coil unit according to any one of claims 1 to 14. The electric valve further includes a valve member and a valve body block that are fixedly connected. The electric valve is characterized in that the coil unit is fixedly connected to the valve body block, or removably connected, or fixedly connected to the valve member, or removably connected.

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