Electric arc contact prevention device of new energy shared power battery electrode contact
The arc-proof contact device for shared power batteries uses a circuit breaker and control system to manage electrode contact connections, preventing arc formation and ensuring safe charging by controlling the connection and disconnection of electrode contacts.
Patent Information
- Application Number
- CN202420612788.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-28
AI Technical Summary
Shared power batteries experience frequent arc formation due to high charging voltage and current, leading to increased electrode contact resistance and safety hazards from severe heating and potential fires.
An arc-proof contact device with a circuit breaker, moving and static contacts, an arc extinguishing device, and a control system that manages the connection and disconnection of electrode contacts using an electromagnetic switch and pressure sensor to prevent arc formation.
The device effectively prevents arc formation by ensuring the electrode contacts are connected before the circuit is closed and disconnected after the circuit is open, reducing the risk of fires and ensuring safe charging.
Smart Images
Figure CN222233558U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an arc contact prevention device for electrode contacts of a new energy shared power battery. Background Art
[0002] Power batteries refer to energy storage devices used to provide a source of power. Shared power batteries are power batteries rented to the public, such as the rapidly developing shared batteries for electric bicycles, which are mainly used by workers in the takeaway and express delivery industries. Because it generally takes about 20 seconds to replace a shared power battery, compared with the several hours of charging time for batteries, it has a very high cost-effectiveness, so it is deeply loved by workers in industries such as takeaways. Compared with ordinary household batteries, shared power batteries are used much more frequently and are charged frequently. In order to improve charging efficiency and increase the frequency of power battery rotation, it means higher charging voltage and greater charging current, which makes it easier for arcs to occur when the electrode contacts of the power battery are disconnected from the cabinet charging plug.
[0003] The essence of an electric arc is a gas ionization discharge phenomenon. When the voltage or current is large enough, the two electrodes are approaching or moving away from each other, and the insulating air ionizes conductive electrons and ions to form a discharge phenomenon. Studies have found that when the current in the circuit exceeds the minimum arc starting current and the voltage on the contact is greater than the minimum arc starting voltage, the contact separation will inevitably produce an arc. The arc is composed of the cathode area, the arc column and the anode area. The temperature of the arc column core area can reach up to 20,000 degrees, and it can release huge radiation energy instantly. The arc is very harmful. In the prior art, arc shields are usually used to prevent arc overflow. Although arc shields can prevent fires and explosions caused by arc overflow to insulating materials and casings, the disadvantage is that due to the high-frequency charging of shared power batteries, after repeated use, the battery electrode contacts form oxides, and the electrode contact resistance increases significantly. During charging, the electrode contacts heat up severely, endangering charging safety. Summary of the invention
[0004] In view of the above shortcomings, the purpose of the present utility model is to provide an arc-proof contact device for shared power battery electrode contacts that reduces arc hazards.
[0005] To this end, the utility model provides an arc-proof contact device for electrode contacts of a new energy shared power battery, wherein the bottom of the power battery includes a charging socket, which cooperates with the charging plug of a cabinet, and the cabinet is provided with a battery compartment that cooperates with the shape of the power battery for inserting the charging plug in the battery compartment into the charging socket to form a match when the power battery is inserted into the battery compartment. The cabinet also includes a circuit breaker, which includes a moving contact, a static contact, and an arc extinguishing device that cooperates with the moving contact and the static contact. The positive and negative poles of the charging plug are electrically connected to the moving contact and the static contact, respectively, and the moving contact is connected to an operating mechanism, which is used to connect or disconnect the moving contact and the static contact of the circuit breaker.
[0006] Furthermore, the operating mechanism includes an electromagnetic switch, the electromagnetic switch includes a permanent magnet block arranged on the moving contact, the charging plug is provided with a pressure sensor, and the cabinet includes a control system, which receives the pressure sensor signal and controls the electromagnetic switch to turn on or off so that the moving contact and the static contact are connected or disconnected.
[0007] The charging socket is provided with an electrode contact that cooperates with the charging plug, and the operating mechanism includes a moving column and a reset spring. The moving contact is connected to the moving column. The moving column cooperates with the reset spring so that the moving column protrudes from the bottom surface of the battery compartment, and the bottom of the power battery cooperates with the moving column to drive the moving contact to move and contact with the static contact. The position of the electrode contact allows the electrode contact to form an electrical connection with the charging plug before the moving contact and the static contact.
[0008] Furthermore, an elastic tube is provided at the bottom of the battery compartment, the movable column is provided in the elastic tube, and the movable column is T-shaped, and the column head of the movable column is connected to a reset spring at the bottom of the battery compartment.
[0009] The moving contact is connected to one end of the Z-shaped rotating plate, and the other end of the Z-shaped rotating plate is provided with a reset spring, and the other end of the Z-shaped rotating plate is also matched with the moving column.
[0010] Furthermore, the electrode contact is arranged on the groove wall of the charging connector, and the distance between the electrode contact and the groove is less than the length of the charging plug protruding from the bottom of the battery compartment.
[0011] Furthermore, the electrode contact is arranged at the bottom of the slot of the charging socket, and the electrode contact is connected to the elastic member.
[0012] Furthermore, a guide rod or a guide groove is provided on the side wall of the power battery shell, and a guide groove or a guide rod corresponding to the shell is provided in the battery compartment.
[0013] Furthermore, the battery compartment is configured such that when the guide rods and guide grooves of the power battery housing and the battery compartment do not correspond to each other, the power battery cannot be fully inserted into the battery compartment and the door of the battery compartment cannot be locked.
[0014] Furthermore, the power battery housing is columnar, the battery compartment is also columnar, and the battery compartment is arranged obliquely or longitudinally.
[0015] The beneficial technical effects of the utility model are:
[0016] (1) The utility model provides a circuit breaker and an arc extinguishing device that acts on the circuit breaker to quickly extinguish the arc. When the charging circuit is not turned on (i.e., the moving and static contacts and the static contacts of the circuit breaker are not closed), the electrode contacts of the power battery and the charging plug are first contacted, and then the circuit breaker is closed by the operating mechanism to avoid the insulation air being broken down and generating an arc before the electrode contacts of the charging plug and the charging socket are contacted. When disconnecting, the moving and static contacts are separated first, and then the charging plug is separated from the electrode contacts of the charging socket. The electrode contacts of the power battery are separated after the circuit is disconnected, so that the disconnection will not generate an arc.
[0017] (2) In the specific embodiment of the utility model, the control system, the electromagnetic switch and the pressure sensor are used to realize that when the electrode contact is electrically connected to the charging plug, the pressure sensor transmits the pressure data to the control system, and the control system controls the electromagnetic switch to close the circuit breaker. On the contrary, when the pressure sensor data decreases below the threshold, the charging plug begins to leave the charging socket, and the electromagnetic switch is controlled to cut off the circuit in advance. Other embodiments also provide other technical solutions to achieve the above functions.
[0018] (3) The battery compartment and power battery housing of the utility model are provided with matching guide rods and guide grooves, which can align the charging socket with the charging plug when the power battery slides inward, and when the guide rod is not aligned with the guide groove, the power battery cannot be completely placed in the battery compartment, so that the cabinet door cannot be closed and the shared power battery order cannot be completed, thereby avoiding the problem that the shared power battery is not returned to its place and cannot be charged. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of a shared power battery;
[0020] Figure 2 A schematic diagram of a battery compartment arranged diagonally;
[0021] Figure 3 It is a schematic diagram of embodiment 1 of the utility model;
[0022] Figure 4 is a schematic diagram of Example 2;
[0023] Figure 5 is a schematic diagram of Example 3;
[0024] Figure 6 Schematic diagram of the electrode contacts being located at the bottom of the socket.
[0025] Explanation of the accompanying drawings: 1. battery; 2. charging socket; 201. electrode contact; 3. battery compartment; 4. charging plug; 5. arc extinguishing device; 6. moving contact; 7. static contact; 8. electromagnetic switch; 9. pressure sensor; 10. moving column; 11. reset spring; 12. elastic tube; 13. Z-shaped rotating plate; 14. guide groove; 15. guide rod; 16. elastic member. DETAILED DESCRIPTION
[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0027] Reference Figures 1 to 6 As shown, the utility model is an arc-proof contact device for electrode contacts of a new energy shared power battery, the bottom of the power battery 1 includes a charging socket 2, the charging socket 2 cooperates with the charging plug 4 of the cabinet, the cabinet is provided with a battery compartment 3 that matches the shape of the power battery 1, so that when the power battery 1 is inserted into the battery compartment 3, the charging plug 4 in the battery compartment 3 is inserted into the charging socket 2 to form a match, the cabinet also includes a circuit breaker, the circuit breaker includes a moving contact, a static contact and an arc extinguishing device 5 that cooperates with the moving contact and the static contact, the positive and negative electrodes of the charging plug 4 are electrically connected to the moving and static contacts respectively, the moving contact is connected to an operating mechanism, and the operating mechanism is used to connect or disconnect the moving contact and the static contact of the circuit breaker after the charging plug 4 contacts the electrode contact 201 of the battery 1. Figure 1 The battery 1 is shown. Figure 2 It is a schematic diagram of the battery compartment 3 in the cabinet. The shared power battery equipment generally includes cabinets, batteries, mobile phone apps and other hardware and software. The order is generated by scanning the code to pay and the cabinet door is opened. The order is ended after the battery is returned and the cabinet door is closed. A charging device is provided in the cabinet. The charging device cooperates with the electrode contact 201 of the battery 1. When the battery 1 is returned to the battery compartment 3, the charging device automatically cooperates with the electrode contact 201 of the battery 1 for charging. The charging device generally includes a charging plug 4. The battery 1 is provided with a charging socket 2 that cooperates with the charging plug 4. The charging socket 2 is arranged in a slot. The charging plug 4 includes a metal conductive plug. The conductive plug is electrically connected to the moving contact 6 or the static contact 7 of the circuit breaker. The other contact of the circuit breaker is connected to the power module. The arc extinguisher can use an insulating arc extinguishing grid. The insulating arc extinguishing grid is used to separate the arc generated when the moving and static contacts 7 are opened and closed into several short arcs. The short arcs are separated by insulation to achieve arc extinguishing. Reference Figure 3As shown, in Example 1, the operating mechanism includes an electromagnetic switch 8, which is a prior art. The electromagnetic switch 8 includes a coil and a permanent magnet block provided on the moving contact 6. The magnetic field generated by the coil after being energized acts on the permanent magnet block to achieve the closing or disconnection of the switch. A pressure sensor 9 is provided on the charging plug 4. When the battery 1 is returned to the battery compartment 3 and the charging plug 4 contacts the bottom of the slot, the pressure sensor 9 is pressurized. The control system receives the signal of the pressure sensor 9 and controls the electromagnetic switch 8 to close, so that the charging plug 4 is first connected to the charging socket 2 and then the circuit breaker is connected. When the battery 1 in the battery compartment 3 is rented, that is, when the order is paid successfully or the cabinet door is opened, the circuit breaker is disconnected through the management control system. It can also be adopted that when the battery 1 is pulled out, the bottom of the slot is separated from the charging plug 4, the value of the pressure sensor 9 decreases, and the control system sets a threshold for disconnecting the circuit, which can also be realized before the charging plug 4 and the charging socket 2 are disconnected.
[0028] Reference Figure 4 As shown, the embodiment 2 of the utility model is basically the same as the embodiment 1, except that the operating mechanism is different. In the embodiment 2, the operating mechanism includes a moving column 10 and a reset spring 11. The moving contact 6 is connected to the copper electrode, and the copper electrode is connected to the charging plug 4 through a wire. The moving contact 6 is installed on an insulating base, and the insulating base is connected to the moving column 10. The moving column 10 is provided with a T-shaped column head. A reset spring 11 is provided between the T-shaped column head and the surface of the bottom of the battery compartment 3. The reset spring 11 is a compression spring. The reset spring 11 makes the moving column 10 protrude from the bottom surface of the battery compartment 3 and separates the moving contact 6 from the static contact 7. When the battery 1 is placed in the battery compartment 3, the bottom of the battery 1 squeezes the moving column 10, and the moving column 10 moves inward, driving the moving contact 6 to move toward the static contact 7 until it contacts. The position of the electrode contact 201 makes the electrode contact 201 and the charging plug 4 form an electrical connection before the moving contact 6 and the static contact 7. Figure 3 and Figure 4 , Figure 5 A configuration of the electrode contact 201 is shown. The electrode contact 201 is disposed on the slot wall of the charging socket, and the distance between the electrode contact 201 and the slot is less than the length of the charging plug 4 protruding from the bottom of the battery compartment 3 . Figure 6Another arrangement of the electrode contact 201 is shown. The electrode contact 201 is arranged at the bottom of the slot of the charging socket 2, and the electrode contact 201 is connected to the elastic member 16. The charging plug 4 contacts the electrode contact 201 to achieve electrical connection. The battery 1 continues to move into the battery compartment 3, the elastic member 16 is deformed, and a pre-tightening force is generated between the charging plug 4 and the electrode contact 201. The connection between the charging plug 4 and the electrode contact 201 is reliable. After the battery 1 is inserted into the bottom of the battery compartment 3, the moving column 10 drives the moving contact 6 to contact the static contact 7. Preferably, an elastic tube 12 is provided at the bottom of the battery compartment 3, and the moving column 10 is provided in the elastic tube 12 to separate the battery compartment 3 from the internal structure, so as to prevent debris in the battery compartment 3 from falling into internal equipment such as the circuit breaker.
[0029] Reference Figure 5 As shown, Example 3 of the utility model is basically the same as Example 2, except that the operating mechanism is different. The moving contact 6 is connected to one end of the Z-shaped rotating plate 13, and the other end of the Z-shaped rotating plate 13 is provided with a reset spring 11, and the other end of the Z-shaped rotating plate 13 also cooperates with the moving column 10.
[0030] In the above-mentioned embodiments 1, 2 and 3, reference is made to Figure 1 and Figure 2 As shown, a guide groove 14 is provided on the side wall of the power battery 1 shell, and a guide rod corresponding to the shell is provided in the battery compartment 3. The outer shape of the power battery 1 matches the shape of the battery compartment 3, and the guide rod matches the guide groove 14. When the battery 1 is inserted into the battery compartment 3, the slot automatically aligns with the charging plug 4 and is plugged in, thereby realizing automatic charging. Preferably, the battery compartment 3 is configured so that when the guide rod 15 and the guide groove 14 of the power battery 1 shell and the battery compartment 3 do not correspond, the power battery 1 cannot be fully inserted into the battery compartment 3, that is, the guide rod 15 prevents the battery 1 from sliding further into the battery compartment 3, and the length of the battery 1 makes it impossible for the battery 1 to enter completely, and the door of the battery compartment 3 cannot be locked, so that the order cannot be completed, thereby avoiding the problem that the battery 1 is placed in the battery 1 without realizing the electrical connection between the charging plug 4 and the charging socket 2, and the normal charging cannot be realized after the order is completed. Specifically, the outer shell of the power battery 1 is columnar, and the battery compartment 3 is also columnar. The battery compartment 3 is set obliquely or longitudinally. When the battery 1 is placed in the battery compartment 3 in a correct posture, the guide rod 15 is aligned with the guide groove 14. The oblique or longitudinal setting can utilize the gravity of the battery 1 to slide into the battery compartment 3, so that the charging plug 4 and the charging socket 2 are fully plugged in.
[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. An arc-proof contact device for electrode contacts of a new energy shared power battery, wherein the bottom of the power battery includes a charging socket, the charging socket cooperates with the charging plug of the cabinet, and the cabinet is provided with a battery compartment that matches the shape of the power battery for the charging plug in the battery compartment to be inserted into the charging socket to form a match when the power battery is inserted into the battery compartment, characterized in that: The cabinet also includes a circuit breaker, which includes a moving contact, a static contact and an arc extinguishing device that cooperates with the moving contact and the static contact. The positive and negative poles of the charging plug are electrically connected to the moving contact and the static contact, respectively. The moving contact is connected to an operating mechanism, and the operating mechanism is used to connect or disconnect the moving contact and the static contact of the circuit breaker.
2. The arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 1, characterized in that: The operating mechanism includes an electromagnetic switch, which includes a permanent magnet block arranged on a moving contact. The charging plug is provided with a pressure sensor. The cabinet includes a control system, which receives a signal from the pressure sensor and controls the electromagnetic switch to connect or disconnect the moving contact and the static contact.
3. The arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 1, characterized in that: The charging socket is provided with an electrode contact that cooperates with the charging plug, and the operating mechanism includes a moving column and a reset spring. The moving contact is connected to the moving column. The moving column cooperates with the reset spring so that the moving column protrudes from the bottom surface of the battery compartment, and the bottom of the power battery cooperates with the moving column to drive the moving contact to move and contact with the static contact. The position of the electrode contact allows the electrode contact to form an electrical connection with the charging plug before the moving contact and the static contact.
4. The arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 3, characterized in that: An elastic tube is arranged at the bottom of the battery compartment, the movable column is arranged in the elastic tube, and the movable column is T-shaped, and the column head of the movable column is connected to a reset spring at the bottom of the battery compartment.
5. The arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 3, characterized in that: The moving contact is connected to one end of the Z-shaped rotating plate, and the other end of the Z-shaped rotating plate is provided with a reset spring, and the other end of the Z-shaped rotating plate is also matched with the moving column.
6. An arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 3, 4 or 5, characterized in that: The electrode contact is arranged on the slot wall of the charging socket, and the distance between the electrode contact and the slot is less than the length of the charging plug protruding from the bottom of the battery compartment.
7. An arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 2, 3, 4 or 5, characterized in that: The electrode contact is arranged at the bottom of the slot of the charging socket, and the electrode contact is connected to the elastic member.
8. An arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 1, 2, 3, 4 or 5, characterized in that: A guide rod or a guide groove is provided on the side wall of the power battery shell, and a guide groove or a guide rod corresponding to the shell is provided in the battery compartment.
9. The arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 8, characterized in that: The battery compartment is configured such that when the guide rods and guide grooves of the power battery housing and the battery compartment do not correspond, the power battery cannot be fully inserted into the battery compartment and the door of the battery compartment cannot be locked.
10. The arc-proof contact device for electrode contacts of a new energy shared power battery according to claim 8, characterized in that: The power battery housing is columnar, the battery compartment is also columnar, and the battery compartment is arranged obliquely or longitudinally.