Contact type charging head structure of AGV (Automatic Guided Vehicle)

Abstract

The utility model relates to the field of AGV charging, in particular to a contact type charging head structure of an AGV. The device comprises an insulating plate, a copper electrode block sliding back and forth is arranged at the front end of the insulating plate, and an elastic piece is arranged between the insulating plate and the copper electrode block to drive the copper electrode block to slide forwards; a limiting structure is further arranged between the insulating plate and the copper electrode block so as to limit the maximum forward sliding stroke of the copper electrode block; a conductive wire penetrates through the insulating plate, and one end of the conductive wire is electrically connected with the copper electrode block; and the temperature control unit is arranged in the copper electrode block, and when the temperature of the charging head rises to a critical value of a safe temperature due to long-time charging, the temperature control unit cuts off the circuit connection of the conductive wire to prevent fire.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of AGV charging, especially to a contact type charging head structure of AGV dolly. BACKGROUND

[0002] In the AGV (Automated Guided Vehicle) industry, AGV equipment needs to be supplemented with energy in time before the energy is consumed. In the early stage, the mode of manual battery replacement was used, and now the mode of automatic charging has been gradually upgraded, that is, the AGV equipment moves to the side of the charging pile and interacts with the charging pile: identity confirmation, electrode conduction, charging, and leaving after charging is completed are completed in a completely unmanned mode.

[0003] In the existing charging mode of AGV dolly, the plug-in charging mode and the contact charging mode are mainly included, among which the contact charging mode is the mainstream: the AGV dolly moves to a specified position, the charging end is in contact with the charging head of the charging pile, and charging can be performed. With the increasing demand for AGV equipment endurance, the battery capacity of AGV equipment is gradually increased. In order to speed up the charging speed, the current of the charging pile during charging is generally not less than 30A, and even 50A and 60A market demands are increasing, and the greater the current, the greater the risk of heat generation during charging. The charging head of the charging pile will be in an overheated state after a long time of charging, and when the heat is too high, there will be a risk of fire. UTILITY MODEL CONTENTS

[0004] In order to overcome the problem of potential fire risk of the charging head of the charging pile in an overheated state after a long time of charging, the utility model provides a contact type charging head structure of AGV dolly, and the utility model solves the technical problems thereof by adopting the technical scheme of:

[0005] A contact type charging head structure of AGV dolly, comprising an insulating plate, a front and rear sliding copper electrode block is arranged at the front end of the insulating plate, a elastic member is arranged between the insulating plate and the copper electrode block to drive the copper electrode block to slide forward; a limiting structure is further arranged between the insulating plate and the copper electrode block to limit the maximum stroke of the copper electrode block sliding forward; a conductive wire is arranged in the insulating plate, one end of the conductive wire is electrically connected with the copper electrode block; a temperature control unit is arranged in the copper electrode block, and the temperature control unit breaks the circuit connection of the conductive wire when the temperature reaches a critical value.

[0006] Further, a connecting hole and a temperature control groove are arranged on the copper electrode block in abutment, the conductive wire is arranged in the connecting hole and electrically connected with the copper electrode block, and the temperature control unit is arranged in the temperature control groove.

[0007] Further, the other end of the conductive wire is electrically connected with the charging pile, and the temperature control unit is electrically connected with the charging pile through the wire to control the circuit on-off of the conductive wire.

[0008] Further, the temperature control unit is a temperature control switch.

[0009] Further, the copper electrode block is internally provided with a buffer heat dissipation groove, and the buffer heat dissipation groove is internally provided with an elastic member.

[0010] Further, the limiting structure comprises a sliding groove and a limiting protrusion, the sliding groove is arranged on the copper electrode block and is arranged in a front-rear direction, and the limiting protrusion is arranged at the front end of the insulating plate and penetrates into the sliding groove to limit the maximum stroke of the front-rear sliding of the copper electrode block.

[0011] The utility model discloses the beneficial effect has:

[0012] The charging head structure comprises an insulating plate, a copper electrode block sliding forward is arranged at the front end of the insulating plate, an elastic member is arranged between the insulating plate and the copper electrode block to drive the copper electrode block to slide forward, a limiting structure is further arranged between the insulating plate and the copper electrode block to limit the maximum stroke of the forward sliding of the copper electrode block, a conductive wire is arranged in the insulating plate, one end of the conductive wire is electrically connected with the copper electrode block, a temperature control unit is arranged in the copper electrode block, when the temperature of the charging head is increased to the critical value of the safety temperature due to long-time charging, the temperature control unit will disconnect the circuit connection of the conductive wire to prevent fire. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described below in combination with the drawings and specific embodiments, wherein:

[0014] Figure 1 It is the perspective view of the charging head structure of the utility model;

[0015] Figure 2 It is the exploded view of the charging head structure of the utility model;

[0016] Figure 3 It is the perspective view of the copper electrode block of the utility model;

[0017] Figure 4 It is the exploded view of the charging head structure of the prior art.

[0018] FIG. NO. Mark:

[0019] 100, insulating plate; 101, conductive wire; 102, limiting protrusion;

[0020] 200, copper electrode block; 201, temperature control unit; 202, connecting hole; 203, temperature control groove; 204, buffer heat dissipation groove; 205, sliding groove;

[0021] 300, elastic member. DETAILED DESCRIPTION

[0022] In order to better understand the purposes, structures and functions of the utility model, specific embodiments of the utility model "AGV trolley contact type charging head structure" are described in further detail below in combination with the drawings.

[0023] Referring to Figure 4 , the existing charging head structure is through the screw from the copper electrode block front end surface in contact with the AGV trolley, and the copper electrode block is limited in the front end of the insulating plate. This charging head structure is seriously heated when charging for a long time, and there is a risk of fire. Moreover, the screw passes through the front end surface of the copper electrode block, resulting in the reduction of the front end surface area of the copper electrode block in contact with the AGV trolley, which reduces the charging efficiency, resulting in longer charging time and increasing the risk of heating and fire. With the increase of charging times, the screw is gradually loosened by the cycle of heating and cooling. When the screw protrudes from the front end surface of the copper electrode block, the AGV trolley is damaged when docking. In order to solve the various problems of the prior art, the present application is proposed as follows.

[0024] Referring to Figures 1-3 In this embodiment, the charging head structure comprises an insulating plate 100, the front end of the insulating plate 100 is provided with a copper electrode block 200 which can slide forward and backward, an elastic member 300 is arranged between the insulating plate 100 and the copper electrode block 200, the elastic member 300 is preferably a spring, the spring has a tendency to drive the copper electrode block 200 to slide forward, and plays a buffering role between the copper electrode block 200 and the insulating plate 100, preventing damage to the charging head or the AGV trolley when the AGV trolley contacts for charging. A limiting structure is further arranged between the insulating plate 100 and the copper electrode block 200 to limit the maximum stroke of the copper electrode block 200 sliding forward. A conductive wire 101 is arranged in the insulating plate 100, one end of the conductive wire 101 is electrically connected with the copper electrode block 200. A temperature control unit 201 is arranged in the copper electrode block 200. When the temperature of the charging head reaches a safety threshold value, the temperature control unit 201 controls the disconnection of the circuit connection of the conductive wire 101, thereby playing a protective role of preventing overheating and fire.

[0025] Further referring to Figure 3 In this embodiment, the copper electrode block 200 is provided with adjacent connecting holes 202 and temperature control grooves 203, the conductive wire 101 is inserted into the connecting holes 202 for brazing connection to be electrically connected with the copper electrode block 200, and the temperature control unit 201 is embedded in the temperature control grooves 203. In this way, the temperature control unit 201 is close to the connection position of the conductive wire 101 and the copper electrode block 200, which can make the fastest response to the heating condition.

[0026] It should be noted that in the embodiment, one end of the conductive wire 101 is electrically connected with the copper electrode block 200, the other end of the conductive wire 101 is electrically connected with the charging pile, the temperature control unit 201 is also electrically connected with the charging pile through the wire, and the temperature control unit 201 controls the on-off of the circuit of the conductive wire 101 through the charging pile.

[0027] More specifically, in the embodiment, the copper electrode block 200 is provided with the buffer heat dissipation groove 204, and the elastic member 300 is arranged in the buffer heat dissipation groove 204.

[0028] Further referring to Figure 2 In the embodiment, the limiting structure includes the sliding groove 205 and the limiting protrusion 102, the sliding groove 205 is arranged on the copper electrode block 200 and arranged in the front-rear direction, the limiting protrusion 102 is arranged at the front end of the insulating plate 100 and penetrates into the sliding groove 205, so as to limit the maximum stroke of the copper electrode block 200 sliding in the front-rear direction through the sliding groove 205 at the front end of the insulating plate 100, and prevent the copper electrode block 200 from being separated from the insulating plate 100.

[0029] As can be seen, the charging head structure of the application can control the on-off of the circuit through the temperature control unit 201, thereby preventing the charging head from overheating and catching fire caused by long-time charging, and the charging head structure cancels the screw, the front end surface area of the copper electrode block 200 is large, the effect of contacting charging is good, and the charging efficiency is improved, and the buffer heat dissipation groove 204 further increases the heat dissipation area of the copper electrode block 200, and the heat dissipation efficiency is improved, so that the charging head can be cooled to below the critical value more quickly after the circuit is disconnected, and the charging can be recovered more quickly.

[0030] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model.In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model.Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

[0031] In the description of the utility model, it is necessary to explain, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

Claims

1. An AGV trolley contact charging head structure, characterized in that, The application relates to an insulating plate (100) provided with a front and rear sliding copper electrode block (200) at the front end, an elastic member (300) arranged between the insulating plate (100) and the copper electrode block (200) to drive the copper electrode block (200) to slide forward, a limiting structure arranged between the insulating plate (100) and the copper electrode block (200) to limit the maximum stroke of the copper electrode block (200) sliding forward, a conductive wire (101) arranged in the insulating plate (100), one end of the conductive wire (101) being electrically connected with the copper electrode block (200), a temperature control unit (201) arranged in the copper electrode block (200), the temperature control unit (201) breaking the circuit connection of the conductive wire (101) when the temperature reaches a critical value, adjacent connecting holes (202) and temperature control grooves (203) arranged on the copper electrode block (200), the conductive wire (101) penetrating the connecting holes (202) to be electrically connected with the copper electrode block (200), and the temperature control unit (201) being arranged in the temperature control grooves (203).

2. The contact charging head structure of an AGV according to claim 1, characterized in that, The other end of the conductive wire (101) is electrically connected with a charging pile, and the temperature control unit (201) is electrically connected with the charging pile through a wire to control the circuit on-off of the conductive wire (101).

3. The contact charging head structure of an AGV according to claim 2, characterized in that, The temperature control unit (201) is a temperature control switch.

4. The contact charging head structure of an AGV according to any one of claims 1-3, characterized in that, The copper electrode block (200) is provided with a buffer heat dissipation groove (204), and the elastic member (300) is arranged in the buffer heat dissipation groove (204).

5. The contact charging head structure of an AGV according to claim 4, characterized in that, The limiting structure comprises a sliding groove (205) and a limiting protrusion (102), the sliding groove (205) is arranged on the copper electrode block (200), the sliding groove (205) is arranged in the front and rear direction, the limiting protrusion (102) is arranged at the front end of the insulating plate (100), the limiting protrusion (102) penetrates the sliding groove (205) to limit the maximum stroke of the copper electrode block (200) sliding forward and backward.

Images