A brushless lithium battery controller

Abstract

The utility model discloses a kind of controller for brushless lithium battery belongs to brushless lithium battery controller technical field, including controller shell, controller shell both ends are fixedly connected with connecting frame, one of connecting frame is provided with connection module, and connection module includes terminal block and connecting seat;The utility model is provided with connection module, and the elastic compression design of positioning sheet and rubber compression block is realized wire physical fixation and elastic buffer, compression block adopts rubber material, and is completely adhered with wire surface, increase friction, effectively avoid terminal connection place loosening caused by pulling, solve traditional controller wire drag loosening problem.

Description

Technical Field

[0001] This utility model belongs to the technical field of brushless lithium battery controllers, and specifically relates to a controller for brushless lithium batteries. Background Technology

[0002] The brushless lithium battery controller is the core device used to drive the brushless motor. Its main functions include high-efficiency energy conversion, precise motion control and multiple protection functions. It is widely used in power tools, electric vehicles, industrial automation and other fields. Traditional controllers often use direct plug-in or simple bundling to fix wires and terminals. In some scenarios, after the wires are subjected to continuous pulling or vibration, they are very easy to detach from the terminals or loosen. They lack targeted anti-drag measures and lack constraints on the orderly arrangement of wires, which can easily lead to tangling and wear. Therefore, a brushless lithium battery controller is needed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a controller for brushless lithium batteries to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a controller for a brushless lithium battery, comprising a controller housing, wherein connecting frames are fixedly connected to both ends of the controller housing, and a connecting module is provided on one of the connecting frames; The connection module includes a terminal block and a connector. The connector is provided with a terminal one and a terminal two, and wires are inserted into the terminal one and the terminal two. The connector is provided with cable trays spaced apart for the arrangement of wires. A positioning piece is fixed on the upper surface of the connector, and a pressure block corresponding to the cable tray is fixedly connected to the lower surface of the positioning piece.

[0005] As a preferred embodiment, the positioning piece has an L-shaped cross-section, and the end of the pressure block furthest from the positioning piece is arc-shaped.

[0006] As a preferred embodiment, the end of the wire away from the connector is connected to a pluggable connector, and a locking block and a locking groove are respectively provided on both sides of the pluggable connector.

[0007] As a preferred embodiment, the end of the connector away from terminal one is fixedly connected to a plug, and the center of the connector has a through slot for the plug to be inserted.

[0008] As a preferred embodiment, the surface of the terminal block is provided with multiple insertion holes, and a metal piece for connecting to the wire is provided in the insertion hole.

[0009] As a preferred embodiment, the outer wall of the plug is inlaid with a ring array of pressure plates that are electrically connected to terminal one and terminal two, and the connecting block is connected with a metal conductive sheet extending toward the central slot of the terminal block.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This utility model is equipped with a connection module. Through the elastic pressing design of the positioning plate and the rubber pressure block, combined with the orderly arrangement of the wires in the cable tray, the physical fixation and elastic buffering of the wires are achieved. The pressure block is made of rubber and is completely attached to the surface of the wires, increasing the friction and effectively preventing the terminal connection from loosening due to pulling, thus solving the problem of wires being dragged and loosened in traditional controllers. This utility model features a connector that allows for quick plugging and unplugging of the plug and terminal block. Combined with the foolproof design of the pluggable connector, the locking block and slot splice further realize the integration, cable management and storage of multiple connectors. During maintenance, there is no need to disassemble the controller housing; damaged connectors or external components, such as motor terminals, can be directly replaced, greatly reducing maintenance difficulty and time costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the pluggable connector structure of this utility model; Figure 3 This is a schematic diagram of the connecting seat structure of this utility model; Figure 4 This is a schematic diagram of the terminal block structure of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the terminal block structure of this utility model. Figure 2 .

[0012] In the diagram: 1. Controller housing; 2. Connecting frame; 3. Connecting base; 4. Positioning plate; 5. Pressure block; 6. Terminal 1; 7. Terminal 2; 8. Cable tray; 9. Terminal block; 10. Plug-in hole; 11. Connecting block; 12. Metal conductive sheet; 13. Wire; 14. Insert post; 15. Pressure plate; 16. Plug-in connector. Detailed Implementation

[0013] The present invention will be further described below with reference to the embodiments.

[0014] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0015] Please see Figure 1-5This utility model provides a controller for a brushless lithium battery, including a controller housing 1. Connecting brackets 2 are fixedly connected to both ends of the controller housing 1. The controller housing 1 is made of flame-retardant ABS or aluminum alloy material to take into account both insulation and heat dissipation. The connecting brackets 2 are fixed to both ends by bolts to provide protection and installation reference for the internal structure. A connecting module is provided on one of the connecting brackets 2. The connection module includes a terminal block 9 and a connector 3. The connector 3 is provided with a terminal 6 and a terminal 7. Wires 13 are inserted into the terminal 6 and the terminal 7. The connector 3 is provided with cable trays 8 spaced apart for the arrangement of wires 13. The width of the trays is adapted to the outer diameter of the wires 13, which is 1.5-4mm², to ensure that the wires 13 are arranged in an orderly manner without tangling. A positioning piece 4 is fixed on the upper surface of the connector 3, and a pressure block 5 corresponding to the cable tray 8 is fixedly connected to the lower surface of the positioning piece 4. By setting the connection module, the wires are connected to the circuit board inside the controller housing 1. Under the action of the positioning pieces 4 of the connector 3, the wires that are initially inserted into the terminal 6 and the terminal 7 can be initially fixed. The connector is fixed by screws with three positioning pieces 4. The pressure block 5 abuts against the wire 13. The pressure block 5 is made of rubber and can be selected with a Shore hardness of 50-60HA and a temperature range of -40℃ to 105℃. It has an anti-aging effect. The pressure block 5 is completely in contact with the surface of the wire 13, increasing the contact area and friction. After the screws are tightened, the pressure block 5 forms an elastic compression on the wire 13 in the cable tray 8, preventing the terminal connection from loosening when the wire 13 is pulled. It achieves dual anti-drag protection of physical fixation and elastic buffer. It can prevent poor contact of the wire 13 under accidental conditions such as pulling, and has the function of preventing dragging. At the same time, the exposed wire 13 is easy to inspect and maintain, solving the problems of loose wire 13 due to dragging, complicated maintenance, and high risk of misconnection in traditional controllers. The positioning piece 4 has an L-shaped cross section, and the end of the pressure block 5 away from the positioning piece 4 is arc-shaped with an arc R = 3-5mm, which fits the surface of the wire 13 better, thereby increasing the friction between the pressure block 5 and the wire 13.

[0016] The end of the wire 13 away from the connector 3 is connected to a pluggable connector 16. It adopts a foolproof design: the two sides of the adjacent pluggable connectors 16 are respectively provided with a locking block and a locking slot, which can realize the splicing and integration of multiple connectors, facilitate cable management and storage, and help the integration and cable management of the pluggable connectors 16.

[0017] The end of the connector 3 away from the terminal 6 is fixedly connected to the plug 14. The center of the terminal block 9 has a through slot for the plug 14 to be inserted. The connector 3 is fixedly connected to the connector 2 by screws. The plug 14 on the connector 3 passes through the through hole on the controller housing 1 and is inserted into the terminal block 9 to achieve quick insertion and removal. When maintenance is required, the impact caused by the dragging of wire 13 can be avoided, and external components can be replaced directly. When connector 3 is damaged, it can be replaced by pulling out connector 3 to achieve maintenance.

[0018] The surface of the terminal block 9 is provided with multiple plug holes 10. A connecting block 11 is provided in the plug hole 10 to connect to the terminal of the electrical component. The terminal of the electrical component is inserted into the plug hole 10 and fixed by rotating the fixing bolt.

[0019] The outer wall of the insert 14 is inlaid with a ring array of pressure plates 15 that are electrically connected to terminal 6 and terminal 7. The pressure plates 15 can be made of copper alloy and have conductivity and elasticity compensation functions. The pressure plates are electrically connected to terminal 6 and terminal 7 through internal copper busbars. The connecting block 11 is connected to a metal conductive sheet 12 extending into the center slot of the terminal block 9. The connecting block 11 and the metal conductive sheet 12 extending into the slot are internally arranged. The connecting block 11 and the metal conductive sheet 12 are made of phosphor bronze, which has high conductivity and long-lasting elasticity. When the plug 14 is inserted into the slot, the elastic pressure plate 15 abuts tightly against the metal conductive sheet 12 to form an electrical path between the terminal assembly and the external components. This enables the electrical components located in the controller housing 1 to correspond with terminals 6 and 7, facilitating the connection of the wire 13 with the corresponding electrical components.

[0020] Furthermore, terminal 6 and terminal 7 have digital labels etched on their bottoms, corresponding to the digital labels etched at the insertion holes 10 on the terminal block 9, which can effectively prevent incorrect connections.

[0021] Working principle and usage process of this utility model: Take a 1.5-4mm² wire of the appropriate specification, use 4mm² for the power end and 1.5mm² for the signal end, connect the end away from the connector 3 to the pluggable connector 16, and integrate it with the slot by the locking blocks on both sides of the connector. Multiple connectors can be categorized and spliced ​​according to power and signal groups to achieve cable management and avoid clutter. Check the terminal connections and labels. Refer to the number labels at the bottom of terminal 6 and terminal 7, such as "1-3 connect to power, 4-8 connect to signal". Insert the other end of wire 13 into the corresponding terminal. Terminal 6 connects to power and terminal 7 connects to signal. Make sure wire 13 is fully inserted to the bottom. The positioning plate 4 is placed on the upper surface of the connector 3 to press and fix the wire 13. The rubber pressure block 5 is aligned with the wire 13 in the cable tray 8. The positioning plate 4 is tightened point by point with the cross-slot screw. The tightening force should be such that the pressure block is slightly deformed and the wire 13 cannot move up and down, so as to ensure the fixing effect and avoid damaging the insulation layer of the wire 13. For external component connection, insert the terminals of the motor and lithium battery system into the insertion holes 10 of the terminal block 9. Similarly, check the number label at the insertion hole 10 to match the terminal label. Rotate the M3-M4 internal hex bolts to press the copper alloy metal sheet in the hole to the terminal, thus completing the circuit connection.

[0022] During daily use and maintenance, it facilitates inspection and component replacement. During normal operation, the rubber pressure block 5 continuously counteracts the slight pulling force of the wire 13, and the splicing structure of the pluggable connector 16 prevents the connector from becoming loose. If the equipment position needs to be temporarily adjusted, there is no need to disassemble the controller; simply arrange the wire 13. The fixing of the cable tray 8 and the pressure block 5 ensures that the wire 13 will not be misaligned. Troubleshooting steps: Power off operation. First, disconnect the power switch of the external lithium battery system to avoid operating while the power is on. The exposed wires 13 and cable trays 8 are designed to be directly observable. If poor contact occurs, first check the terminal insertion status and whether the clamping block 5 is loose. If it is necessary to replace external components such as motor terminals, simply unplug the pluggable connector 16 or loosen the fixing bolts of the terminal block 9 without disturbing the internal structure of the controller. If the connector 3 is damaged, such as by terminal oxidation or cable tray 8 cracking, simply unscrew the fixing screws of the connector 3 and the connector bracket 2, and pull out the plug 14 to replace the connector 3. The entire process can be completed without disassembling the controller housing 1.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A controller for brushless lithium batteries, comprising a controller housing (1), characterized in that: The controller housing (1) is fixedly connected to two ends of a connecting frame (2), and a connecting module is provided on one of the connecting frames (2); The connection module includes a terminal block (9) and a connector (3). The connector (3) is provided with a terminal 1 (6) and a terminal 2 (7). Wires (13) are inserted into the terminal 1 (6) and the terminal 2 (7). The connector (3) is provided with a cable tray (8) spaced apart for the cable tray (13). A positioning piece (4) is fixed on the upper surface of the connector (3). A pressure block (5) corresponding to the cable tray (8) is fixedly connected to the lower surface of the positioning piece (4).

2. The controller for brushless lithium batteries according to claim 1, characterized in that: The positioning piece (4) has an L-shaped cross section, and the end of the pressure block (5) away from the positioning piece (4) is arc-shaped.

3. The controller for a brushless lithium battery according to claim 1, characterized in that: The end of the wire (13) away from the connector (3) is connected to a pluggable connector (16), and a locking block and a locking slot are respectively provided on both sides of the pluggable connector (16).

4. A controller for brushless lithium batteries according to claim 1, characterized in that: The connector (3) is fixedly connected to a plug (14) at the end away from terminal 1 (6), and the terminal block (9) has a through slot in the center for the plug (14) to be inserted.

5. A controller for brushless lithium batteries according to claim 4, characterized in that: The surface of the terminal block (9) is provided with a plurality of plug holes (10), and a connecting block (11) for connecting to the wiring terminal of an electrical component is provided in the plug hole (10).

6. A controller for brushless lithium batteries according to claim 5, characterized in that: The outer wall of the insert (14) is inlaid with a ring array of pressure plates (15) that are electrically connected to terminal one (6) and terminal two (7), and the connecting block (11) is connected with a metal conductive sheet (12) extending toward the central slot of the terminal block (9).

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