New energy heavy truck battery replacement hydraulic gear type locking mechanism

Abstract

The application discloses a new energy heavy truck battery replacement hydraulic gear type locking mechanism in the technical field, which comprises a hydraulic cylinder body, a cylinder body upper cover fixedly arranged on the top of the hydraulic cylinder body, a piston assembly arranged in the hydraulic cylinder body and capable of moving up and down and rotating in opposite directions, a first oil port arranged on the upper part of one side of the hydraulic cylinder body, a second oil port arranged on the lower part of one side of the hydraulic cylinder body, a first oil hole arranged on the lower part of the first oil port, a second oil hole and a third oil hole arranged on the other side of the hydraulic cylinder body, and a magnetic ring fixedly arranged on the inner side of the cylinder body upper cover and used for adsorbing the piston assembly. The application can realize locking at any position in the stroke range, and the flexibility and applicability of the device are enhanced. A set of hydraulic systems can lock multiple positions of the battery box, the up-down movement and rotation operation of the pressing plate can be controlled through the control of the hydraulic valve, and the application is suitable for the locking of the heavy truck battery box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle battery swapping, and in particular to a battery swapping hydraulic locking mechanism. BACKGROUND

[0002] With the rapid development of the new energy vehicle industry, pure electric vehicles as an important clean energy transportation tool, its promotion and application has been the government's strong support. However, due to the current limitations of battery technology, the energy density of the battery box has not reached the ideal level, which leads to a long charging time and a short range of electric vehicles, which becomes a key factor restricting its further popularization. To solve this problem, battery swapping technology has emerged as the times require, aiming to shorten the energy supply time of electric heavy trucks by quickly replacing the battery box and improving the convenience of use.

[0003] At present, such as the patent with the patent number CN216033894U, it discloses a hydraulic lock with manual unlocking function; including hydraulic lock mounting plate, main locking mechanism, auxiliary locking mechanism, automatic unlocking device, manual unlocking device set on the hydraulic lock mounting plate, the automatic unlocking device is an oil cylinder set on the hydraulic lock mounting plate through the oil cylinder support, the extension part of the oil cylinder cooperates with the auxiliary locking mechanism to make it in the locking or unlocking state, when the new energy battery swapping heavy truck appears circuit fault, can cooperate with the auxiliary locking mechanism through the manual unlocking device to make it in the locking or unlocking state, so as to solve the existing technology in the circuit fault, unable to replace the battery pack, so as to greatly save time and avoid unnecessary trouble.

[0004] However, the existing technology has some problems: however, in the existing battery swapping technology, the locking mechanism of the fast battery box is often large in size, small in locking force and unreliable, which not only affects the convenience of battery swapping operation, but also reduces the reliability of battery swapping facilities, and limits the large-scale promotion and application of battery swapping mode. Therefore, developing a fast battery box locking device with smaller size, larger locking force and higher reliability is of great significance to promote the development of pure electric vehicle battery swapping technology. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a new energy heavy truck battery swapping hydraulic gear type locking mechanism to solve the problems in the background art.

[0006] The purpose of the application is achieved in that the new energy heavy truck battery replacement hydraulic gear type locking mechanism comprises a hydraulic cylinder body, a cylinder body upper cover fixedly arranged on the top of the hydraulic cylinder body, a piston assembly arranged in the hydraulic cylinder body and capable of moving up and down and rotating in opposite directions, a sensor fixedly arranged in the cylinder body upper cover for measuring position, a first oil port arranged on the upper part of one side of the hydraulic cylinder body, a second oil port arranged on the lower part of one side of the hydraulic cylinder body, a first oil hole arranged on the lower part of the first oil port, a second oil hole and a third oil hole arranged on the other side of the hydraulic cylinder body, and a magnetic ring fixedly arranged on the inner side of the cylinder body upper cover for adsorbing the piston assembly.

[0007] Further, the piston assembly comprises a piston rod penetrating through the cylinder body upper cover and movably arranged in the hydraulic cylinder body, and the bottom end of the piston rod is connected with a piston upper plate, a segmented cylindrical gear and a piston plate through flat key clamping.

[0008] Further, the piston plate is fixedly connected with the piston rod, the flat key is fixedly arranged at the included angle between the piston plate and the piston rod, and the piston upper plate and the segmented cylindrical gear are installed on the piston plate and the piston rod through flat key clamping.

[0009] Further, the second oil port comprises a first oil channel arranged in the bottom of the hydraulic cylinder body, the end of the first oil channel is communicated with a first overflow hole communicated with the hydraulic cylinder body, and the end of the first oil channel is threadedly connected with a first sealing adapter.

[0010] Further, the first oil hole comprises a second oil channel communicated with the hydraulic cylinder body, the second oil channel is communicated with the first oil port through a second overflow hole, the end of the first oil port is also threadedly connected with a first sealing adapter, and the end of the first oil hole is threadedly connected with a first plug.

[0011] Further, the segmented cylindrical gear comprises first teeth and second teeth, the central angles of the first teeth and the second teeth are arranged at 60 degrees, each of the first teeth and the second teeth comprises one tooth, and the interval between adjacent teeth is 60 degrees.

[0012] Further, the second oil hole and the third oil hole respectively comprise a third oil channel and a fourth oil channel penetrating through the hydraulic cylinder body, the third oil channel and the fourth oil channel are communicated through a fifth oil channel, and the ends of the third oil channel and the fourth oil channel are respectively threadedly connected with a second plug and a third plug.

[0013] Further, two detection columns are embedded and arranged on one side of the piston rod, and the two detection columns are respectively arranged correspondingly with the sensor, and the sensor is used for detecting the position of the detection column.

[0014] Further, a pressing plate is fixedly arranged at the top end of the piston rod, and the length of the pressing plate is greater than the diameter of the hydraulic cylinder body, and the pressing plate is used for locking the cover plate of the external battery box.

[0015] Further, a notch is arranged at the upper end of the piston upper plate, and the notch is used for flowing the oil to the upper side of the piston upper plate, so as to drive the piston assembly to move downward.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] The device has simple structure, large locking force, and stepless locking ability, can realize locking at any position in the stroke range, and has long stroke, which further enhances the flexibility and applicability of the device, and only one set of hydraulic system is needed to realize locking of multiple positions of the battery box, and the up-down movement and rotation operation of the pressing plate can be realized by controlling the hydraulic valve, the structure is simple, the locking force is large, and the device is more suitable for locking application of heavy truck battery box.

[0018] The magnetic ring fixed on the cylinder body cover can provide magnetic attraction force to keep the piston in the upper position, the oil passage on the side of the cylinder body introduces high-pressure oil into the gear cavity of the segmented cylindrical gear, and the two parts of the gear of the segmented cylindrical gear are limited in number, so that the oil cannot enter the gear cavity to drive the gear to rotate after the piston assembly rotates by 90 degrees; when the oil enters from the upper oil port of the hydraulic cylinder body, the oil directly flows into the other gear cavity of the segmented cylindrical gear through the oil passage on the cylinder body, drives the piston assembly to reverse by 90 degrees, and then the oil flows into the upper side of the piston assembly through the notch of the piston upper plate, drives the piston assembly to move downward; the high-pressure oil flows into the lower side of the piston assembly through the first overflow hole through the second oil port below the hydraulic cylinder body, and drives the piston assembly to move upward with smaller pressure; during the locking movement, the second oil port below the hydraulic cylinder body is an oil outlet, the first oil port above the hydraulic cylinder body is an oil inlet, the high-pressure oil flows into the upper side of the piston assembly through the notch of the piston upper plate, drives the piston assembly to move downward, and realizes the locking and unlocking process. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creating any creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 It is a schematic diagram of the structure of one side of the present application.

[0022] Figure 3 It is a schematic diagram of the sectional structure of the present application.

[0023] Figure 4 It is a schematic diagram of the piston assembly of the present application.

[0024] Figure 5 It is a sectional view of the segmented cylindrical gear of the present application.

[0025] Figure 6 It is a sectional view of the segmented cylindrical gear of the present application.

[0026] Figure 7 It is a sectional view of one side of the pressing plate of the present application.

[0027] Figure 8 It is a sectional view of the present application near the first oil port.

[0028] Figure 9 It is a control schematic diagram of the present application.

[0029] Wherein, 101, hydraulic cylinder body; 102, cylinder upper cover; 103, piston assembly; 1031, piston rod; 1032, piston upper plate; 1033, segmented cylindrical gear; 10331, first tooth; 10332, second tooth; 1034, flat key; 1035, notch; 1036, detection column; 1037, piston plate; 104, pressing plate; 105, sensor; 106, first oil hole; 1061, second oil delivery channel; 1062, second overflow hole; 1063, first plug; 107, first oil port; 108, second oil hole; 1081, third oil delivery channel; 1082, second plug; 109, third oil hole; 1091, fourth oil delivery channel; 1092, third plug; 1093, fifth oil delivery channel; 110, second oil port; 1101, first oil delivery channel; 1102, first overflow hole; 1103, first sealing adapter; 111, magnetic ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] As Figures 1-9 shown, a new energy heavy truck battery replacement hydraulic gear type locking mechanism, including a hydraulic cylinder body 101, fixedly arranged on the top of the cylinder body 101 cylinder body cover 102, arranged in the hydraulic cylinder body 101 can move up and down positive and negative rotation of the piston assembly 103, fixedly arranged in the cylinder body cover 102 for measuring the position of the sensor 105, arranged on one side of the upper part of the hydraulic cylinder body 101 first oil port 107, arranged in the lower part of the hydraulic cylinder body 101 second oil port 110, and the first oil hole 106 is arranged in the lower part of the first oil port 107, the second oil hole 108 and the third oil hole 109 are arranged on the other side of the hydraulic cylinder body 101, and the magnetic ring 111 for adsorbing the piston assembly 103 is fixedly arranged on the inner side of the cylinder body cover 102.

[0032] In this embodiment, preferably, the piston assembly 103 includes a piston rod 1031 that penetrates the cylinder body cover 102 and moves in the hydraulic cylinder body 101, the bottom end of the piston rod 1031 is connected with a piston upper plate 1032, a segmented cylindrical gear 1033 and a piston plate 1037 through a flat key 1034, the segmented cylindrical gear 1033 is between the piston upper plate 1032 and the piston plate 1037, the piston plate 1037 is fixedly connected with the piston rod 1031, the flat key 1034 is fixedly arranged at the included angle of the piston plate 1037 and the piston rod 1031, and the piston upper plate 1032 and the segmented cylindrical gear 1033 are clamped and installed on the piston plate 1037 and the piston rod 1031 through the flat key 1034.

[0033] It should be noted that the piston upper plate 1032, the segmented cylindrical gear 1033 and the piston plate 1037 are connected together by the flat key 1034 and move simultaneously without mutual rotational displacement; the piston upper plate 1032, the segmented cylindrical gear 1033 and the piston plate 1037 are relatively fixed and are matched by the flat key 1034, and the piston assembly 103 is arranged in the interior of the hydraulic cylinder body 101 and can move up and down and rotate in positive and negative directions.

[0034] In this embodiment, preferably, the second oil port 110 includes a first oil channel 1101 arranged in the bottom of the hydraulic cylinder body 101, the end of the first oil channel 1101 is communicated with a first overflow hole 1102 communicated with the hydraulic cylinder body 101, and the end of the first oil channel 1101 is threadedly connected with a first sealing adapter 1103.

[0035] It should be noted that the bottom of the hydraulic cylinder body 101 has the first oil channel 1101, the first overflow hole 1102 of the first oil channel 1101 flows to the bottom of the piston, the first overflow hole 1102 has a small diameter and can achieve the effect of pressure reduction, the piston assembly 103 is pushed upward with small force, and the piston assembly 103 is prevented from impacting the cylinder.

[0036] In the embodiment, preferably, the first oil hole 106 comprises a second oil channel 1061 communicated with the hydraulic cylinder body 101, the second oil channel 1061 is communicated with the first oil port 107 through a second overflow hole 1062, the end of the first oil port 107 is also threaded connected with a first sealing adapter 1103, and the end of the first oil hole 106 is threaded connected with a first plug 1063;

[0037] It should be noted that the upper end of the hydraulic cylinder body 101 is provided with the first oil hole 106, the second oil channel 1061 and the second overflow hole 1062 in the first oil hole 106 are communicated with each other, in order to improve the sealing performance of the oil, the end of the first oil port 107 is threaded connected with the first sealing adapter 1103, and the end of the first oil hole 106 is threaded connected with the first plug 1063, so that the oil can flow into or out of the hydraulic cylinder body 101 through the first oil hole 106.

[0038] In the embodiment, preferably, the segmented cylindrical gear 1033 comprises first teeth 10331 and second teeth 10332, the central angles of the first teeth 10331 and the second teeth 10332 are arranged at 100 degrees, and each of the first teeth 10331 and the second teeth 10332 comprises 8 teeth, and the interval between adjacent teeth is 15 degrees.

[0039] It should be noted that the setting of the first teeth 10331 and the second teeth 10332 facilitates the input of the oil, and further facilitates the driving rotation of the segmented cylindrical gear 1033.

[0040] In the embodiment, preferably, the second oil hole 108 and the third oil hole 109 respectively comprise a third oil channel 1081 and a fourth oil channel 1091 penetrating the hydraulic cylinder body 101, the third oil channel 1081 and the fourth oil channel 1091 are communicated through a fifth oil channel 1093, and the ends of the third oil channel 1081 and the fourth oil channel 1091 are respectively threaded connected with a second plug 1082 and a third plug 1092.

[0041] The upper end edge of the piston upper plate 1032 is provided with a notch 1035, the notch 1035 is used for flowing the oil into the upper side of the piston upper plate 1032, and further pushing the piston assembly 103 to move downward;

[0042] It should be noted that when the piston assembly 103 moves to the upper limit position, the high-pressure oil below the piston assembly 103 flows through the third oil channel 1081, from the third oil channel 1081 to the fourth oil channel 1091, and flows into the gear cavity of the segmented cylindrical gear 1033, and pushes the piston assembly 103 to rotate, when the piston assembly 103 rotates to the position as shown in the figure, the high-pressure oil in the fourth oil channel 1091 flows through the fifth oil channel 1093, and flows into the gear cavity of the segmented cylindrical gear 1033, and pushes the piston assembly 103 to rotate to the lower limit position. Figure 5When the piston assembly 103 is located at the position shown in the figure, high-pressure oil cannot flow into the gear cavity, thereby stopping the rotating movement, at this position, the sensor 105 identifies the position signal, controls the hydraulic valve to work, and makes the locking mechanism in the unlocked state;

[0043] When the piston assembly 103 is located at the position shown in the figure, high-pressure oil cannot flow into the gear cavity, thereby stopping the rotating movement, at this position, the sensor 105 identifies the position signal, controls the hydraulic valve to work, and makes the locking mechanism in the unlocked state; Figure 6 When the piston assembly 103 is located at the position shown in the figure, high-pressure oil cannot flow into the gear cavity, thereby stopping the rotating movement, at this position, the sensor 105 identifies the position signal, controls the hydraulic valve to work, and makes the locking mechanism in the unlocked state;

[0044] In the embodiment, preferably, two detection columns 1036 are embedded on one side of the piston rod 1031, the two detection columns 1036 are respectively arranged corresponding to the sensor 105, and the sensor 105 is used for detecting the position of the detection column 1036.

[0045] It should be noted that the detection column 1036 is detected by the sensor 105, so that the moving position of the piston rod 1031 is detected, and the position information is determined.

[0046] In the embodiment, preferably, the top end of the piston rod 1031 is fixedly provided with a pressing plate 104, the length of the pressing plate 104 is greater than the diameter of the hydraulic cylinder body 101, and the pressing plate 104 is used for locking the cover plate of the external battery box.

[0047] It should be noted that the pressing plate 104 can lock the cover plate of the external battery box through lifting adjustment and rotation.

[0048] In combination with Figure 9 In state 1, the electromagnets 1YA and 2YA cannot be electrified, at this time, the locking mechanism keeps the upper limit position state; in state 2, the electromagnet 2YA is electrified, the locking mechanism rotates 90° first, then moves downward and finally locks the battery box; in state 3, the electromagnet 1YA is electrified, the locking mechanism moves upward to the upper limit position and rotates 90°, so as to realize the locking and unlocking of the battery box.

[0049] The specific process of the application is as follows:

[0050] When the unlocking signal is sent, the electromagnet 1YA of the hydraulic valve is powered, high-pressure oil flows into the lower part of the piston assembly 103 in the hydraulic cylinder 101 from the first oil channel 1101 and the first overflow hole 1102 of the second oil port 110, low-pressure oil flows out of the hydraulic cylinder 101 from the first oil port 107 and returns to the oil tank, at this time, the piston assembly 103 moves upward, and the first overflow hole 1102 is a smaller oil port, which plays a role in reducing pressure and pushing the piston assembly 103 upward with lower pressure; when the piston assembly 103 moves to the upper limit, high-pressure oil flows into the second oil port 108 through the third oil hole 109 located below the piston assembly 103, at this time, the second oil port 108 is opposite the second tooth 10332 of the segmented cylindrical gear 1033, and the piston assembly 103 is pushed to rotate in the positive direction, when it rotates to the specified position, the sensor 105 detects the position signal by detecting the column 1036, at this time, the electromagnet 1YA stops working, and the magnetic ring 111 attracts the piston assembly 103 to the high position, maintaining this state. When the unlocking signal is received, the electromagnet 2YA works, high-pressure oil flows into the hydraulic cylinder 101 from the first oil port 107, and low-pressure oil flows out of the hydraulic cylinder 101 from the second oil port 110, so that the oil returns to the oil tank through the first oil channel 1101 and the first overflow hole 1102, at this time, high-pressure oil cannot flow into the upper part of the piston assembly 103 through the gap 1035, so high-pressure oil can only flow through the second oil channel 1061 opposite the first tooth 10331 of the segmented cylindrical gear 1033, so that the piston assembly 103 rotates at the upper limit, when it rotates to the specified position, high-pressure oil can flow into the upper part of the piston upper plate 1032 through the gap 1035, driving the piston assembly 103 to move downward until the battery box is locked, completing the locking action, that is, through the lifting adjustment and rotation of the pressing plate 104, the pressing plate 104 can lock the cover plate of the external battery box; and there is an oil way reversing valve in the oil way, which can maintain the oil pressure of the hydraulic cylinder 101 for a long time, so that the piston assembly 103 will not move when subjected to external force.

[0051] The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be noted that those skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A new energy heavy truck battery replacement hydraulic locking mechanism, characterized in that: The hydraulic cylinder (101), the cylinder cover (102) fixedly arranged on the top of the hydraulic cylinder (101), the piston assembly (103) arranged in the hydraulic cylinder (101) and capable of moving up and down and rotating in opposite directions, the sensor (105) fixedly arranged in the cylinder cover (102) for measuring position, the first oil port (107) arranged on the upper part of one side of the hydraulic cylinder (101), the second oil port (110) arranged on the lower part of one side of the hydraulic cylinder (101), the first oil hole (106) arranged on the lower part of the first oil port (107), the second oil hole (108) and the third oil hole (109) arranged on the other side of the hydraulic cylinder (101), and the magnetic ring (111) fixedly arranged on the inner side of the cylinder cover (102) for adsorbing the piston assembly (103); The piston assembly (103) includes the piston rod (1031) penetrating the cylinder cover (102) and movably arranged in the hydraulic cylinder (101), the bottom end of the piston rod (1031) being connected with the piston upper plate (1032), the segmented cylindrical gear (1033) and the piston plate (1037) through the flat key (1034), the segmented cylindrical gear (1033) being between the piston upper plate (1032) and the piston plate (1037); The piston plate (1037) is fixedly connected with the piston rod (1031), the flat key (1034) is fixedly arranged at the included angle between the piston plate (1037) and the piston rod (1031), and the piston upper plate (1032) and the segmented cylindrical gear (1033) are clamped and installed on the piston plate (1037) and the piston rod (1031) through the flat key (1034). The top end of the piston rod (1031) is fixedly provided with the pressing plate (104), the length of the pressing plate (104) is greater than the diameter of the hydraulic cylinder (101), and the pressing plate (104) is used for locking the cover plate of the external battery box.

2. The new energy heavy truck battery replacement hydraulic locking mechanism according to claim 1, characterized in that: The second oil port (110) includes the first oil delivery channel (1101) arranged in the bottom of the hydraulic cylinder (101), the end of the first oil delivery channel (1101) being communicated with the first overflow hole (1102) communicated with the hydraulic cylinder (101), and the end of the first oil delivery channel (1101) being threadedly connected with the first sealing adapter (1103).

3. The new energy heavy truck battery replacement hydraulic locking mechanism according to claim 1, characterized in that: The first oil hole (106) includes the second oil delivery channel (1061) communicated with the hydraulic cylinder (101), the second oil delivery channel (1061) being communicated with the first oil port (107) through the second overflow hole (1062), the end of the first oil port (107) also being threadedly connected with the first sealing adapter (1103), and the end of the first oil hole (106) being threadedly connected with the first plug (1063).

4. The new energy heavy truck battery replacement hydraulic locking mechanism according to claim 1, characterized in that: The segmented cylindrical gear (1033) comprises a first tooth (10331) and a second tooth (10332), the center angles of the first tooth (10331) and the second tooth (10332) are arranged at 100 degrees, the first tooth (10331) and the second tooth (10332) respectively comprise 8 teeth, and the adjacent teeth are spaced by 15 degrees. 5.The new energy heavy truck battery replacement hydraulic locking mechanism according to claim 1, characterized in that: The second oil hole (108) and the third oil hole (109) respectively comprise a third oil channel (1081) and a fourth oil channel (1091) penetrating through the hydraulic cylinder body (101), the third oil channel (1081) and the fourth oil channel (1091) are communicated through a fifth oil channel (1093), and the ends of the third oil channel (1081) and the fourth oil channel (1091) are respectively threadedly connected with a second plug (1082) and a third plug (1092).

6. The new energy heavy truck battery replacement hydraulic locking mechanism according to claim 1, characterized in that: Two detection columns (1036) are embedded and arranged on one side of the piston rod (1031), the two detection columns (1036) are respectively arranged correspondingly with the sensor (105), and the sensor (105) is used for detecting the position of the detection column (1036).

7. The new energy heavy truck battery replacement hydraulic locking mechanism according to claim 1, characterized in that: The upper end edge of the piston upper plate (1032) is provided with a notch (1035), the notch (1035) is used for flowing oil to the upper side of the piston upper plate (1032), and then driving the piston assembly (103) to move downward.

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