Charging base signal transmission module, charging base and charging base assembly

Abstract

The utility model discloses a charging seat signal transmission module, charging seat and charging seat subassembly. Charging seat signal transmission module includes: lead frame, and temperature detection module. Lead frame includes multiple lead, and it includes communication signal lead and temperature sensing signal lead, and insulating frame is injected to multiple lead. Temperature detection module sets up to insulating frame and is electrically connected with temperature sensing signal lead, is used for detecting the temperature of the power terminal of charging seat. Charging seat signal transmission module is suitable for from outside plug -in to the slot of charging seat shell. When charging seat signal transmission module is plugged into the slot of charging seat shell, communication signal lead and the signal terminal of charging seat electric contact, and temperature detection module and the power terminal of charging seat thermal contact. The charging seat signal transmission module that can be inserted from the outside of charging seat shell is integrated with signal terminal, and therefore communication signal and temperature sensing signal can be led out from lead frame through same row lead, and the degree of integration is higher.

Description

Technical Field

[0001] This utility model relates to a charging dock signal transmission module, a charging dock including the charging dock signal transmission module, and a charging dock assembly including the charging dock. Background Technology

[0002] In existing technologies, to charge the battery packs of new energy electric vehicles, a charging socket suitable for mates with a charging gun needs to be installed on the vehicle. To control the temperature rise of the power terminals, the charging socket includes a signal transmission module and integrates a temperature detection module thereon. This temperature detection module includes a temperature sensor and a thermal pad encasing the sensor. The signal terminals of the charging socket (e.g., the AC charging socket communication circuit CC / CP) are independent leads. Installing the charging socket requires separating the temperature sensing signal leads and the communication signal leads, which leads to assembly difficulties and higher costs. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a charging dock signal transmission module is provided, including a lead frame and a temperature detection module. The lead frame includes: a plurality of leads, including communication signal leads and temperature sensing signal leads; and an insulating frame injection molded onto the plurality of leads. The temperature detection module is disposed on the insulating frame and electrically connected to the temperature sensing signal leads for detecting the temperature of the power terminals of the charging dock. The charging dock signal transmission module is adapted to be externally inserted into a slot in a charging dock housing. When the charging dock signal transmission module is inserted into the slot of the charging dock housing, the communication signal leads are in electrical contact with the signal terminals of the charging dock, and the temperature detection module is in thermal contact with the power terminals of the charging dock.

[0005] According to an exemplary embodiment of the present invention, the insulating frame includes a connector interface adapted to be disposed outside the charging housing, the connector interface being for mating with a signal connector such that a plurality of leads of the lead frame can be electrically connected via the connector interface to an external lead at least partially housed in the signal connector, the connector interface having an insertion cavity allowing the signal connector to be inserted.

[0006] According to another exemplary embodiment of the present invention, the external lead passes through the signal connector and docks with a plurality of leads of the lead frame.

[0007] According to another exemplary embodiment of the present invention, the communication signal lead has a contact spring for electrical contact with the signal terminal of the charging socket.

[0008] According to another exemplary embodiment of the present invention, the temperature detection module includes: a thermal pad; and a temperature sensor, which is partially enclosed in the thermal pad, with the positive and negative leads of the temperature sensor extending out from the thermal pad.

[0009] According to another exemplary embodiment of the present invention, the temperature sensing signal lead is electrically connected to the positive and negative pins of the temperature sensor.

[0010] According to another exemplary embodiment of the present invention, the temperature sensing signal lead includes a positive lead and a negative lead that are electrically connected to the positive pin and the negative pin of the temperature sensor, respectively; and the communication signal lead, the positive lead and the negative lead extend into the insertion cavity of the connector interface and are electrically connected to the external lead in the insertion cavity.

[0011] According to another exemplary embodiment of the present invention, the thermal pad is in the form of a block, and a recessed receiving portion is formed on the insulating frame, wherein the thermal pad is positioned and installed into the receiving portion.

[0012] According to another aspect of the present invention, a charging dock is provided. The charging dock includes: a charging dock housing, power terminals, signal terminals, and the aforementioned charging dock signal transmission module. The charging dock housing has a first socket, a second socket, and a slot, the slot communicating with the first socket and the second socket. The power terminals are inserted into the first socket, and the signal terminals are inserted into the second socket. The charging dock signal transmission module is inserted into the slot of the charging dock housing.

[0013] According to an exemplary embodiment of the present invention, the charging dock signal transmission module is movable between a pre-installed position and a final installation position in a slot of the charging dock housing; when the charging dock signal transmission module is in the pre-installed position, the lead frame does not interfere with the power terminals of the charging dock, allowing the power terminals to be inserted and removed; when the charging dock signal transmission module is in the final installation position, the lead frame axially abuts against the power terminals and the signal terminals to lock the power terminals and the signal terminals in the charging dock housing.

[0014] According to another exemplary embodiment of the present invention, the insulating frame further includes an edge portion that abuts against the end of the signal terminal in an axial direction to lock the signal terminal in the second socket.

[0015] According to another exemplary embodiment of the present invention, the temperature detection module is disposed in the housing, the thermal pad is in thermal contact with the power terminal; the temperature sensor is partially wrapped in the thermal pad and is used to detect the temperature of the power terminal, and the thermal pad transfers the heat of the power terminal to the temperature sensor.

[0016] According to another exemplary embodiment of the present invention, the insulating frame further includes a support portion adapted to be inserted into a slot in the charging base housing, wherein the thermal pad and the temperature sensor are mounted on the support portion.

[0017] According to another exemplary embodiment of the present invention, the insulating frame has a cover plate portion for sealing the entrance of the slot of the charging base housing, and a plurality of protrusions are formed on the outer peripheral surface of the cover plate portion, the plurality of protrusions being spaced apart around the outer periphery of the cover plate portion; a plurality of snaps are formed on the outer side of the peripheral wall of the slot of the charging base housing, the plurality of snaps being spaced apart around the slot and engaging with the plurality of protrusions to lock the lead frame to the charging base housing.

[0018] According to another exemplary embodiment of the present invention, the power terminal includes: a cylindrical portion for mating with a mating power terminal; and a connecting portion connected to the rear end of the cylindrical portion for electrically connecting to a cable, wherein the receiving portion has a top wall that axially abuts against the rear end face of the cylindrical portion of the power terminal to lock the power terminal in the first socket.

[0019] According to another exemplary embodiment of the present invention, the thermal pad is block-shaped and has an arc-shaped contact surface suitable for abutting against the outer peripheral surface of the power terminal, so as to increase the thermal contact area between the thermal pad and the power terminal.

[0020] According to another exemplary embodiment of the present invention, the axial direction of the slot is perpendicular to the axial direction of the first socket and the second socket, and the lead frame is inserted into the slot along the axial direction of the slot.

[0021] According to another exemplary embodiment of the present invention, the charging base housing is a one-piece injection molded part.

[0022] According to another aspect of the present invention, a charging dock assembly is provided. The charging dock assembly includes: the aforementioned charging dock and a signal connector. The signal connector mates with the connector interface of the lead frame of the charging dock.

[0023] In the foregoing exemplary embodiments of the present invention, the charging base signal transmission module, which can be inserted from the outside of the charging base housing, is integrated with the signal terminals. Therefore, the communication circuit CC / CP signal and the temperature sensing signal can be led out from the lead frame through the same row of leads, resulting in higher integration and more convenient installation of the charging base.

[0024] Furthermore, in some of the exemplary embodiments described above according to this utility model, the lead frame has a secondary locking function. During assembly, the signal terminals are first assembled into the terminal sockets, then the charging dock signal transmission module is assembled to the pre-installed position, the power terminals are assembled again, and finally the charging dock signal transmission module is assembled and inserted into the final installation position. In the inserted state, the lead frame can lock the power terminals and signal terminals in the corresponding terminal sockets, eliminating the need for a secondary locking structure for the power terminals and signal terminals themselves, thus simplifying the structure of the power terminals and signal terminals.

[0025] Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0026] Figure 1A A perspective view of a charging dock according to an exemplary embodiment of the present invention is shown; Figure 1B This is a perspective view showing a charging dock with the charging dock housing hidden according to an exemplary embodiment of the present invention; Figure 2 This diagram shows an exploded view of a charging dock according to an exemplary embodiment of the present invention. Figure 3 This diagram shows the mating of the lead frame and the charging base housing of a charging base according to an exemplary embodiment of the present invention. Figure 4 A partial cross-sectional view showing the lead frame of a charging dock according to an exemplary embodiment of the present invention locking the signal terminals in a second socket; Figure 5A This shows a partial cross-sectional view of the power terminal in the pre-installed position of the charging dock housing slot according to an exemplary embodiment of the present invention. Figure 5B This shows a partial cross-sectional view of the power terminal in the final installation position of the charging dock housing slot according to an exemplary embodiment of the present invention. Figure 6 An exploded view of the lead frame of a charging dock according to an exemplary embodiment of the present invention is shown. Figure 7This diagram shows an insulating frame of a lead frame in electrical contact with a signal terminal according to an exemplary embodiment of the present invention. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0028] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0029] According to a general technical concept of this utility model, a charging dock signal transmission module is provided. The charging dock includes a lead frame and a temperature detection module. The lead frame includes: a plurality of leads, including communication signal leads and temperature sensing signal leads; and an insulating frame, injection molded onto the plurality of leads. The temperature detection module is disposed on the insulating frame and electrically connected to the temperature sensing signal leads for detecting the temperature of the power terminals of the charging dock. The charging dock signal transmission module is adapted to be externally inserted into a slot in the charging dock housing. When the charging dock signal transmission module is inserted into the slot in the charging dock housing, the communication signal leads are in electrical contact with the signal terminals of the charging dock, and the temperature detection module is in thermal contact with the power terminals of the charging dock.

[0030] According to another overall technical concept of this utility model, a charging dock is provided. The charging dock includes: a charging dock housing, power terminals, signal terminals, and the aforementioned charging dock signal transmission module. The charging dock housing has a first socket, a second socket, and a slot, the slot communicating with the first socket and the second socket. The power terminals are inserted into the first socket, and the signal terminals are inserted into the second socket. The charging dock signal transmission module is inserted into the slot of the charging dock housing.

[0031] According to another general technical concept of this utility model, a charging dock assembly is provided. The charging dock assembly includes: the aforementioned charging dock and a signal connector. The signal connector mates with the connector interface of the lead frame of the charging dock.

[0032] Figure 1A A perspective view of a charging dock according to an exemplary embodiment of the present invention is shown; Figure 1BThis is a perspective view showing a charging dock with the charging dock housing hidden according to an exemplary embodiment of the present invention; Figure 2 This diagram shows an exploded view of a charging dock according to an exemplary embodiment of the present invention. Figure 3 This diagram shows the mating of the lead frame and the charging base housing of a charging base according to an exemplary embodiment of the present invention. Figure 4 A partial cross-sectional view showing the lead frame of a charging dock according to an exemplary embodiment of the present invention locking the signal terminals in a second socket; Figure 5A This shows a partial cross-sectional view of the power terminal in the pre-installed position of the charging dock housing slot according to an exemplary embodiment of the present invention. Figure 5B This shows a partial cross-sectional view of the power terminal in the final installation position of the charging dock housing slot according to an exemplary embodiment of the present invention. Figure 6 An exploded view of the lead frame of a charging dock according to an exemplary embodiment of the present invention is shown. Figure 7 This diagram shows an insulating frame of a lead frame in electrical contact with a signal terminal according to an exemplary embodiment of the present invention.

[0033] like Figures 1A to 7 As shown, in an exemplary embodiment of this utility model, a charging dock signal transmission module is disclosed, including a lead frame 4 and a temperature detection module 44. The lead frame 4 includes a plurality of leads 40 and an insulating frame 42. The plurality of leads 40 includes a communication signal lead 402 and a temperature sensing signal lead 404. The insulating frame 42 is injection molded onto the plurality of leads 40. The temperature detection module 44 is disposed on the insulating frame 42 and electrically connected to the temperature sensing signal lead 404, and is used to detect the temperature of the power terminal 2 of the charging dock. The charging dock signal transmission module is adapted to be externally inserted into a slot 10 of the charging dock housing 1. When the charging dock signal transmission module is inserted into the slot 10 of the charging dock housing 1, the communication signal lead 402 is in electrical contact with the signal terminal 3 of the charging dock, and the temperature detection module 44 is in thermal contact with the power terminal 2 of the charging dock.

[0034] The insulating frame 42 includes a connector interface 45 adapted to be disposed outside the charging housing 1. The connector interface 45 is for mating with a signal connector 49, such that a plurality of leads 40 of the lead frame 4 can be electrically connected via the connector interface 45 to an external lead 462 at least partially housed in the signal connector 49. The connector interface 45 has an insertion cavity 432 allowing insertion of the signal connector 49. The external lead 462 passes through the signal connector 49 and mats with the plurality of leads 40 of the lead frame 4.

[0035] The communication signal lead 402 includes a contact spring 412, which is used to make electrical contact with the signal terminal 3 of the charging base.

[0036] The temperature detection module 44 includes a thermal pad 441 and a temperature sensor 442. The temperature sensor 442 is partially enclosed in the thermal pad 441. The positive pin 452 and the negative pin 454 of the temperature sensor 442 extend out from the thermal pad 441.

[0037] The temperature sensing signal lead 404 is electrically connected to the positive pin 452 and the negative pin 454 of the temperature sensor 442.

[0038] The temperature sensing signal lead 404 includes a positive lead 472 and a negative lead 474 that are electrically connected to the positive pin 452 and the negative pin 454 of the temperature sensor 442, respectively. The communication signal lead 402, the positive lead 472, and the negative lead 474 extend into the insertion cavity 432 of the connector interface 45 and are electrically connected to the external lead 462 in the insertion cavity 432.

[0039] The thermal pad 441 is block-shaped. A recessed receiving portion 429 is formed on the insulating frame 42. The thermal pad 441 is positioned and mounted into the receiving portion 429.

[0040] like Figures 1A to 7 As shown, in another exemplary embodiment of this utility model, a charging dock signal transmission module is disclosed, including a charging dock housing 1, a power terminal 2, a signal terminal 3, and the aforementioned charging dock signal transmission module. The charging dock housing 1 is an integral injection molded part. The charging dock housing 1 has a first insertion hole 11, a second insertion hole 12, and a slot 10, and the slot 10 communicates with the first insertion hole 11 and the second insertion hole 12. The power terminal 2 is inserted into the first insertion hole 11. The signal terminal 3 is inserted into the second insertion hole 12. The aforementioned charging dock signal transmission module is inserted into the slot 10 of the charging dock housing 1.

[0041] The charging dock signal transmission module is movable between a pre-installed position and a final-installed position within the slot 10 of the charging dock housing 1. When the charging dock signal transmission module is in the pre-installed position, the lead frame 4 does not interfere with the power terminals 2 of the charging dock, allowing the power terminals 2 to be inserted and removed. When the charging dock signal transmission module is in the final-installed position, the lead frame 4 axially abuts against the power terminals 2 and the signal terminals 3 to lock the power terminals 2 and the signal terminals 3 within the charging dock housing 1.

[0042] The insulating frame 42 also includes an edge portion 420 that abuts against the end of the signal terminal 3 in the axial direction to lock the signal terminal 3 in the second socket 12.

[0043] A temperature detection module 44 is disposed within the housing 10. A thermally conductive pad 441 is in thermal contact with the power terminal 2. A temperature sensor 442 is used to detect the temperature of the power terminal 2. The thermally conductive pad 441 transfers heat from the power terminal 2 to the temperature sensor 442.

[0044] The insulating frame 42 also includes a support portion 421. The support portion 421 is adapted to be inserted into the slot 10 of the charging housing 1. A thermal pad 441 and a temperature sensor 442 are mounted on the support portion 421.

[0045] The insulating frame 42 has a cover portion 423 for sealing the entrance of the slot 10 of the charging housing 1. A plurality of protrusions 425 are formed on the outer peripheral surface of the cover portion 423, and the protrusions 425 are spaced apart around the outer periphery of the cover portion 423. A plurality of latches 427 are formed on the outer side of the peripheral wall of the slot 10 of the charging housing 1. The latches 427 are spaced apart around the slot 10 and engage with the protrusions 425 to lock the lead frame 4 to the charging housing 1.

[0046] The power terminal 2 includes a cylindrical portion 21 and a connecting portion 22. The cylindrical portion 21 is used to mate with a mating power terminal. The connecting portion 22 is connected to the rear end of the cylindrical portion 21 and is used for electrical connection to the cable 23. The receiving portion 429 has a top wall 482 that axially abuts against the rear end face 484 of the cylindrical portion 21 of the power terminal 2 to lock the power terminal 2 in the first socket 11.

[0047] The thermal pad 441 is block-shaped and has an arc-shaped contact surface 441a suitable for abutting against the outer peripheral surface of the power terminal 2, so as to increase the thermal contact area between the thermal pad 441 and the power terminal 2.

[0048] The axis of the slot 10 is perpendicular to the axis of the first socket 11 and the second socket 12, and the lead frame 4 is inserted into the slot 10 along the axis of the slot 10.

[0049] like Figures 1A to 7 As shown, in another exemplary embodiment of this utility model, a charging dock assembly is disclosed, including the aforementioned charging dock and a signal connector 49. The signal connector 49 mates with the connector interface 45 of the lead frame 4 of the charging dock.

[0050] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this utility model.

[0051] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0052] While some embodiments of the general concept of this utility model have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of this utility model, the scope of which is defined by the claims and their equivalents.

[0053] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of this invention.

Claims

1. A charging dock signal transmission module, characterized in that, include: The lead frame (4) includes: Multiple leads (40), including a communication signal lead (402) and a temperature sensing signal lead (404). and An insulating frame (42) is injection molded onto the plurality of leads (40); and A temperature detection module (44) is mounted on the insulating frame (42) and electrically connected to the temperature sensing signal lead (404) for detecting the temperature of the power terminal (2) of the charging dock. The charging dock signal transmission module is adapted to be externally inserted into a slot (10) of the charging dock housing (1). When the charging dock signal transmission module is inserted into the slot (10) of the charging dock housing (1), the communication signal lead (402) is in electrical contact with the signal terminal (3) of the charging dock, and the temperature detection module (44) is in thermal contact with the power terminal (2) of the charging dock.

2. The charging dock signal transmission module according to claim 1, characterized in that: The insulating frame (42) includes a connector interface (45) adapted to be disposed outside the charging housing (1), the connector interface (45) for mating with a signal connector (49), such that a plurality of leads (40) of the lead frame (4) can be electrically connected via the connector interface (45) to an external lead (462) at least partially housed in the signal connector (49). The connector interface (45) has an insertion cavity (432) that allows the signal connector (49) to be inserted.

3. The charging dock signal transmission module according to claim 2, characterized in that: The external lead (462) passes through the signal connector (49) and docks with a plurality of leads (40) of the lead frame (4).

4. The charging dock signal transmission module according to claim 1, characterized in that: The communication signal lead (402) includes a contact spring (412) for making electrical contact with the signal terminal (3) of the charging base.

5. A charging stand, characterized in that, include: The charging dock housing (1) has a first socket (11), a second socket (12) and a slot (10), wherein the slot (10) communicates with the first socket (11) and the second socket (12); The power terminal (2) is inserted into the first socket (11); The signal terminal (3) is inserted into the second socket (12); and The charging dock signal transmission module according to any one of claims 2-3 is inserted into the slot (10) of the charging dock housing (1).

6. The charging dock according to claim 5, characterized in that: The charging dock signal transmission module is movable between a pre-installed position and a final installation position in the slot (10) of the charging dock housing (1); When the charging dock signal transmission module is in the pre-installed position, the lead frame (4) does not interfere with the power terminal (2) of the charging dock, so as to allow the power terminal (2) to be plugged in and unplugged. When the charging dock signal transmission module is in the final assembly position, the lead frame (4) abuts axially against the power terminal (2) and the signal terminal (3) to lock the power terminal (2) and the signal terminal (3) in the charging dock housing (1).

7. The charging dock according to claim 5, characterized in that: The insulating frame (42) also includes: The edge portion (420) abuts against the end of the signal terminal (3) along the axial direction to lock the signal terminal (3) in the second socket (12).

8. The charging dock according to claim 5, characterized in that: The temperature detection module (44) is disposed in the charging base housing (1) and includes: Thermal pad (441) is in thermal contact with the power terminal (2); and Temperature sensor (442), partially enclosed in the thermal pad (441), is used to detect the temperature of the power terminal (2). The positive pin (452) and negative pin (454) of the temperature sensor (442) extend from the thermal pad (441). The thermal pad (441) transfers heat from the power terminal (2) to the temperature sensor (442).

9. The charging dock according to claim 8, characterized in that: The temperature sensing signal lead (404) is electrically connected to the positive pin (452) and negative pin (454) of the temperature sensor (442).

10. The charging stand according to claim 9, characterized in that: The temperature sensing signal lead (404) includes a positive lead (472) and a negative lead (474) electrically connected to the positive pin (452) and negative pin (454) of the temperature sensor (442), respectively; and The communication signal lead (402), the positive lead (472) and the negative lead (474) extend into the insertion cavity (432) of the connector interface (45) and are electrically connected to the external lead (462) in the insertion cavity (432).

11. The charging dock according to claim 8, characterized in that: The insulating frame (42) also includes: The bracket portion (421) is adapted to be inserted into the slot (10) of the charging base housing (1). The thermal pad (441) and the temperature sensor (442) are mounted on the bracket (421).

12. The charging stand according to claim 11, characterized in that: The insulating frame (42) also includes a cover plate (423) for sealing the entrance of the slot (10) of the charging base housing (1), and a plurality of protrusions (425) are formed on the outer peripheral surface of the cover plate (423), the plurality of protrusions (425) being distributed at intervals around the outer periphery of the cover plate (423). Multiple snaps (427) are formed on the outer side of the peripheral wall of the slot (10) of the charging housing (1). The multiple snaps (427) are distributed at intervals around the slot (10) and engage with the multiple protrusions (425) to lock the lead frame (4) to the charging housing (1).

13. The charging dock according to claim 8, characterized in that: The thermal pad (441) is block-shaped and has a recessed receiving portion (429) formed on the insulating frame (42). The thermal pad (441) is positioned and installed in the receiving portion (429).

14. The charging stand according to claim 13, characterized in that: The power terminal (2) includes: The cylindrical portion (21) is used to mate with the mating power terminals; and The connecting part (22) is connected to the rear end of the cylindrical part (21) and is used for electrical connection to the cable (23). The receiving portion (429) has a top wall (482) that axially abuts against the rear end face (484) of the cylindrical portion (21) of the power terminal (2) to lock the power terminal (2) in the first socket (11).

15. The charging dock according to claim 8, characterized in that: The thermal pad (441) has an arc-shaped contact surface (441a) adapted to abut against the outer peripheral surface of the power terminal (2) to increase the thermal contact area between the thermal pad (441) and the power terminal (2).

16. The charging dock according to claim 5, characterized in that: The axial direction of the slot (10) is perpendicular to the axial direction of the first socket (11) and the second socket (12), and the lead frame (4) is inserted into the slot (10) along the axial direction of the slot (10).

17. The charging dock according to claim 5, characterized in that: The charging base housing (1) is an integral injection molded part.

18. A charging dock assembly, characterized in that, include: The charging dock according to any one of claims 5-17; and The signal connector (49) mates with the connector interface (45) of the lead frame (4) of the charging dock.

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