A liquid cooling connector for an automatically disconnecting battery pack

Abstract

This invention discloses an automatically disconnecting liquid cooling connector for battery packs, comprising a liquid cooling connector body and a housing plate. A main connector is located on the front side of the liquid cooling connector body, with a raised strip on the outer side of the main connector. A main sleeve is fitted onto the main connector, and a limiting groove is formed on the inner side of the main sleeve. An adjustable limiting component is provided at the end of the raised strip. A spare connector is located on the side of the liquid cooling connector body. Internal branch pipes are located on both sides of the liquid cooling connector body, inside the housing plate. Threaded holes are formed at the bottom of the internal branch pipes, and temperature sensors are inserted into these threaded holes. An easily controllable opening and closing component is provided on the liquid cooling connector body. This invention, by adding a main connector and a spare connector to the liquid cooling connector body, and with the cooperation of the opening and closing component, achieves switching between the openings of the main connector and the spare connector, enabling coolant replacement without machine downtime, which is beneficial for improving product quality and production efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of liquid cooling connectors for battery packs, specifically to an automatic disconnection liquid cooling connector for battery packs. Background Technology

[0002] As the core power component of the machine, the battery pack generates heat whether it is charging or discharging. When the heat is too high, it will have an adverse effect on the battery's capacity, power, charging and discharging efficiency, safety and lifespan. At present, the battery pack is mainly managed by liquid cooling system to keep the battery temperature stable within a certain operating temperature range. Generally, liquid cooling pipes are installed in the battery pack, and liquid enters and exits into the liquid cooling pipes through liquid cooling connectors set on the battery pack shell.

[0003] Existing liquid cooling systems typically use liquid cooling pipes filled with coolant that surrounds the battery pack. After prolonged use, if the coolant concentration is too high or too low, its heat dissipation effect will be poor, requiring timely replacement of the deteriorated coolant. However, this necessitates stopping the machine and unscrewing the liquid cooling connectors to replace the coolant, which affects product quality and production efficiency. Furthermore, during the assembly and disassembly of pin-type liquid cooling connectors, the pins are prone to breakage due to excessive force, resulting in poor sealing and affecting the performance of the battery pack liquid cooling connectors. Summary of the Invention

[0004] The purpose of this invention is to provide an automatically disconnecting liquid-cooled connector for battery packs to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatically disconnecting liquid-cooled battery pack connector, comprising a liquid-cooled connector body and a housing plate. A main connector is provided on the front side of the liquid-cooled connector body, a protruding strip is provided on the outer side of the main connector, a main sleeve is sleeved on the main connector, a limiting groove is provided on the inner side of the main sleeve, a limiting component for easy adjustment is provided at the end of the protruding strip, a spare connector is provided on the side of the liquid-cooled connector body, internal branch pipes are provided on both sides of the liquid-cooled connector body located on the inner side of the housing plate, threaded holes are provided at the bottom of the internal branch pipes, temperature sensors are inserted into the threaded holes, and an opening and closing component for easy control is provided on the liquid-cooled connector body.

[0006] Preferably, multiple protrusions are provided, and the multiple protrusions are distributed circumferentially around the outer side of the main connector. The limiting groove matches with the protrusions, and a sealing ring is embedded in the end of the main connector.

[0007] Preferably, the housing of the temperature sensor is connected to the threaded hole via internal and external threads, and the temperature sensor is electrically connected to the control center.

[0008] Preferably, the limiting component includes a limiting block, a receiving groove is provided at the top of the end of the protrusion, an installation plate is provided at the opening of the receiving groove, the limiting block has a "T" shaped block structure and the outer side of the end has an inclined surface structure, and the limiting block is slidably inserted into the installation plate.

[0009] Preferably, a slot is provided on one side of the limiting block, a cylinder is provided on the protrusion located on one side of the receiving groove, an insertion block is provided at the telescopic end of the cylinder, the end of the insertion block matches the slot, and a support spring is provided between the limiting block and the receiving groove.

[0010] Preferably, a limiting groove is provided on the inner side of the limiting groove on the main sleeve. The limiting groove is a through groove structure. A pressure block is slidably inserted into the limiting groove. A slider is provided on both sides of the pressure block. A sliding groove is provided on both sides of the limiting groove. The slider is located in the sliding groove. The ends of the pressure block and the limiting block abut against each other.

[0011] Preferably, the opening and closing assembly includes a first extension sleeve, which is welded to the top of the liquid cooling connector body. A first mounting block is provided on the top of the first extension sleeve, and a first sealing block is slidably inserted into the first extension sleeve. An electric telescopic rod is provided at the bottom of one side of the first sealing block inside the liquid cooling connector body, and a first pressure sensor is provided on one side of the electric telescopic rod inside the liquid cooling connector body. The first pressure sensor is electrically connected to the control center.

[0012] Preferably, the first sealing block has an "L" shaped block structure and its end abuts against the opening of the main connector. A first airbag is provided on the top of the first sealing block. The first airbag is located between the first mounting block and the first sealing block. A first reminder light is provided on the first mounting block. The first reminder light is electrically connected to the control center.

[0013] Preferably, a second extension sleeve is provided on the bottom inclined side of the liquid cooling connector body, a second mounting block is provided at the opening of the second extension sleeve, a second sealing block is slidably inserted on the second extension sleeve, the second sealing block has an "L" shaped block structure and its end abuts against the opening of the spare connector, and a second airbag is provided at the end of the second sealing block.

[0014] Preferably, a second reminder light is provided on the second mounting block, and the second reminder light is electrically connected to the control center. A connecting pipe is provided between the second airbag and the first airbag, passing through the second mounting block and the first mounting block. A reset spring is provided between the second sealing block and one side of the inner cavity of the second extension sleeve. A second pressure sensor is provided inside the liquid cooling connector body on one side of the reset spring, and the second pressure sensor is electrically connected to the control center.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention adds a main connector and a spare connector to the main body of the liquid cooling connector. With the cooperation of the opening and closing components, the openings of the main connector and the spare connector can be switched to close. This allows the coolant to be replaced without stopping the machine, which is beneficial to improving product quality and production efficiency.

[0017] 2. This invention utilizes a thermistor within a temperature sensor to detect high-temperature signals, which are then transmitted to a control center. The control center controls the retraction of the cylinder's telescopic end, causing the end of the insert block on the main connector to separate from the slot. This prevents the limiting block from being restricted by the insert block, facilitating subsequent disassembly of the main connector. Simultaneously, the control center controls the retraction of the electric telescopic rod's telescopic end, causing the first sealing block to move downwards and close the opening of the main connector. Combined with the cooperation of the first and second airbags, and the cooperation of the first and second pressure sensors, this allows for the switching of the openings of the main connector and the spare connector between closed and open states, achieving intelligent and automated operation and simplifying worker operation.

[0018] 3. This invention strengthens the main connector by adding a raised strip, which, in conjunction with the limiting groove, forms a positioning between the main sleeve and the main connector. The support spring and the limiting block form an elastic insertion structure, allowing the end of the limiting block to be inserted into the limiting groove, thus achieving the limiting and fixing between the main connector and the main sleeve. In addition, the cooperation between the cylinder and the insertion block ensures the sealing stability of the battery pack liquid cooling connector, preventing the pins on the pin-type liquid cooling connector from easily breaking due to excessive force during disassembly and assembly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the automatic disconnection battery pack liquid cooling connector of the present invention.

[0020] Figure 2 This is an exploded view of the liquid-cooled connector body and the temperature sensor of the present invention.

[0021] Figure 3 This is a schematic diagram of the limiting component of the present invention.

[0022] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0023] Figure 5 This is a schematic diagram of the internal structure of the first extension sleeve of the present invention.

[0024] Figure 6 This is a schematic diagram of the internal structure of the second extension sleeve of the present invention.

[0025] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B.

[0026] In the diagram: Liquid cooling connector body 1; main connector 2; protrusion 21; sealing ring 22; mounting plate 23; limiting block 24; slot 241; insertion block 242; cylinder 243; support spring 25; main sleeve 3; limiting slide groove 31; pressure block 32; slider 33; limiting groove 34; spare connector 4; internal branch pipe 5; threaded hole 51; box plate 6; temperature sensor 7; first extension sleeve 8; first sealing block 81; first mounting block 82; first airbag 83; electric telescopic rod 84; first pressure sensor 85; first reminder light 86; second extension sleeve 9; second mounting block 91; second airbag 92; second sealing block 93; reset spring 94; second pressure sensor 95; second reminder light 96; connecting pipe 97. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 7 The present invention provides a technical solution: an automatic disconnection battery pack liquid cooling connector, including a liquid cooling connector body 1 and a housing plate 6. A main connector 2 is welded to the front side of the liquid cooling connector body 1. A protrusion 21 is welded to the outer side of the main connector 2. Multiple protrusions 21 are provided and are distributed circumferentially around the outer side of the main connector 2. A main sleeve 3 is sleeved on the main connector 2 and is fixedly connected to the external main circulating liquid cooling circuit.

[0029] A spare connector 4 is welded to the side of the liquid cooling connector body 1. The spare connector 4 is installed in the same way as the main connector 2. Internal branch pipes 5 are fixed on both sides of the liquid cooling connector body 1 inside the box plate 6. The ends of the internal branch pipes 5 are welded with threads. The internal branch pipes 5 are fixedly connected to the internal liquid cooling circuit. A threaded hole 51 is opened at the bottom of the internal branch pipe 5. A temperature sensor 7 is inserted into the threaded hole 51. The housing of the temperature sensor 7 is connected to the threaded hole 51 with internal and external threads. The temperature sensor 7 is electrically connected to the control center. The thermistor inside the temperature sensor 7 will sense the temperature signal.

[0030] A limiting groove 31 is provided on the inner side of the main sleeve 3. The limiting groove 31 matches the protrusion 21. The setting of the protrusion 21 strengthens the main connector 2. At the same time, it cooperates with the limiting groove 31 to form a positioning between the main sleeve 3 and the main connector 2, preventing rotation and affecting the sealing performance. A sealing ring 22 is embedded in the end of the main connector 2. The sealing ring 22 has an "O" type rubber layer structure, which makes it easier for the end face of the sealing ring 22 to better abut against the main sleeve 3, so as to achieve the sealing performance between the main connector 2 and the main sleeve 3.

[0031] The end of the protrusion 21 is provided with an adjustable limiting component, which includes a limiting block 24. The top of the end of the protrusion 21 is provided with a receiving groove, and a mounting plate 23 is fixed at the opening of the receiving groove. The mounting plate 23 is fixed to the protrusion 21 by screws. The limiting block 24 has a "T" shaped block structure and an inclined surface structure on the outer side of the end. The limiting block 24 is slidably inserted into the mounting plate 23.

[0032] A slot 241 is provided on one side of the limiting block 24. A cylinder 243 is fixedly installed on the protrusion 21 on one side of the receiving groove. The cylinder 243 is electrically connected to the control center. A plug 242 is provided at the telescopic end of the cylinder 243. The end of the plug 242 matches the slot 241. A support spring 25 is fixedly connected between the limiting block 24 and the receiving groove. A limiting groove 34 is provided on the main sleeve 3 on the inner side of the limiting slide groove 31. The limiting groove 34 is a through groove structure. The end of the limiting block 24 corresponds to the limiting groove 34. The support spring 25 and the limiting block 24 form an elastic insertion structure, so that the end of the limiting block 24 is inserted into the limiting groove 34.

[0033] Driven by cylinder 243, the end of insert 242 is inserted into slot 241, thereby limiting the position of insert 242 on limit block 24. At this time, the end of limit block 24 is inserted into limit groove 34. Since the main connector 2 is welded to the protrusion 21, and cylinder 243 is fixedly installed on the protrusion 21, stable limiting and fixing between the main connector 2 and the main sleeve 3 is achieved.

[0034] If the coolant temperature is high, the thermistor in the temperature sensor 7 will sense the high temperature signal and transmit the signal to the control center. The control center will control the extension end of the cylinder 243 to retract. At this time, the end of the insert 242 on the main connector 2 will separate from the slot 241, and the limiting block 24 will not be limited by the insert 242, thus facilitating the subsequent disassembly of the main connector 2.

[0035] A pressure block 32 is slidably inserted into the limiting groove 34. A slider 33 is welded to both sides of the pressure block 32. A sliding groove is opened on both sides of the limiting groove 34. The slider 33 is located in the sliding groove. When the insertion block 242 limits the limiting block 24 and the end of the limiting block 24 is inserted into the limiting groove 34, one side of the limiting groove 34 is in contact with the end face of the sliding groove, and the pressure block 32 abuts against the end of the limiting block 24. By pressing the pressure block 32, the slider 33 slides on the sliding groove. The end of the pressure block 32 squeezes the end of the limiting block 24 so that it is accommodated in the receiving groove, which facilitates the subsequent disassembly of the main connector 2.

[0036] The liquid cooling connector body 1 is provided with an easy-to-control opening and closing assembly. The opening and closing assembly includes a first extension sleeve 8, which is welded to the top of the liquid cooling connector body 1. A first mounting block 82 is fixed to the top of the first extension sleeve 8. A first reminder light 86 is fixedly installed on the first mounting block 82. The first reminder light 86 is electrically connected to the control center. A first sealing block 81 is slidably inserted into the first extension sleeve 8. The first sealing block 81 has an "L" shaped block structure and its end abuts against the opening of the main connector 2.

[0037] The top of the first sealing block 81 is bonded with a first airbag 83, which is located between the first mounting block 82 and the first sealing block 81. Inside the liquid cooling connector body 1, at the bottom of one side of the first sealing block 81, an electric telescopic rod 84 is fixedly installed. The electric telescopic rod 84 is electrically connected to the control center. If the coolant temperature is high, the thermistor in the temperature sensor 7 will sense the high temperature signal and transmit the signal to the control center. At the same time, the control center controls the telescopic end of the electric telescopic rod 84 to retract, causing the first sealing block 81 to move downward and close the opening of the main connector 2.

[0038] Inside the liquid-cooled connector body 1, a first pressure sensor 85 is fixedly installed on one side of the electric telescopic rod 84. The first pressure sensor 85 is electrically connected to the control center. When the first sealing block 81 moves downward and squeezes the end of the first pressure sensor 85, the first pressure sensor 85 receives the pressure within the set pressure range and transmits the signal to the control center, causing the first reminder light 86 of the control center to flash.

[0039] A second extension sleeve 9 is welded to the bottom oblique side of the liquid cooling connector body 1. A second mounting block 91 is fixed at the opening of the second extension sleeve 9. A second sealing block 93 is slidably inserted into the second extension sleeve 9. The second sealing block 93 has an "L" shaped block structure and its end abuts against the opening of the spare connector 4. A second airbag 92 is glued to the end of the second sealing block 93. A second reminder light 96 is fixedly installed on the second mounting block 91. The second reminder light 96 is electrically connected to the control center.

[0040] A connecting pipe 97 connects the second airbag 92 and the first airbag 83 through the second mounting block 91 and communicates with the first mounting block 82. A return spring 94 is fixedly connected between the second sealing block 93 and one side of the inner cavity of the second extension sleeve 9. A second pressure sensor 95 is fixedly installed inside the liquid-cooled connector body 1 on one side of the return spring 94. The second pressure sensor 95 is electrically connected to the control center. In the initial state, the extension state of the extension end of the electric telescopic rod 84 causes the first sealing block 81 to move away from the opening of the main connector 2. At this time, the first airbag 83 is compressed, and the gas inside is transmitted to the second airbag 92 through the connecting pipe 97. The expansion state of the second airbag 92 squeezes the second sealing block 93, so that the return spring 94 is compressed by the abutment of the second sealing block 93. The elastic force of the return spring 94 is greater than the sum of the force of the extension end of the electric telescopic rod 84 providing the extension in the initial state and the weight of the second sealing block 93.

[0041] When the first sealing block 81 moves downward, the return spring 94, under the force of restoring its deformation in the initial state, pushes the end of the second sealing block 93 away from the opening of the spare connector 4. The other end of the second sealing block 93 squeezes the second airbag 92. The gas in the second airbag 92 is transmitted to the first airbag 83 through the connecting pipe 97. At this time, the second pressure sensor 95 is not under the pressure of the second sealing block 93, so the second warning light 96 does not flash. At this time, the spare connector 4 is connected to the liquid cooling connector body 1.

[0042] In actual use, if the coolant temperature is high, the thermistor in the temperature sensor 7 will sense a high-temperature signal and transmit it to the control center. The control center will then control the retraction end of the cylinder 243 to retract. At this time, the end of the insert 242 on the main connector 2 will separate from the slot 241, and the limiting block 24 will not be limited by the insert 242, thus facilitating the subsequent disassembly of the main connector 2. Simultaneously, the control center will control the retraction end of the electric telescopic rod 84 to retract, causing the first sealing block 81 to move downward and close the opening of the main connector 2. When the first sealing block 81 moves downward and presses the end of the first pressure sensor 85, the first pressure sensor 85 receives pressure within the set pressure range and transmits the signal to the control center. The first warning light 86 in the control center will then flash to remind the operator. During the replacement process, the return spring 94, under the force of restoring its deformation in the initial state, pushes the end of the second sealing block 93 away from the opening of the spare connector 4. The other end of the second sealing block 93 squeezes the second airbag 92. The gas in the second airbag 92 is transferred to the first airbag 83 through the connecting pipe 97. At this time, the second pressure sensor 95 is not under the pressure of the second sealing block 93, so the second reminder light 96 does not flash. At this time, the spare connector 4 is connected to the liquid cooling connector body 1, realizing the replacement of coolant without stopping the machine, which is beneficial to improving product quality and production efficiency. By pressing the pressure block 32, the slider 33 slides on the slide groove. The end of the pressure block 32 squeezes the end of the insert 242 to accommodate it in the receiving groove, and the main sleeve 3 and the main connector 2 can be quickly disassembled.

[0043] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatically disconnected battery pack liquid cooling connector, comprising a liquid cooling connector main body (1) and a box plate (6), characterized in that: The liquid cooling connector body (1) is provided with a main connector (2) on the front side, a protrusion (21) is provided on the outer side of the main connector (2), a main sleeve (3) is sleeved on the main connector (2), a limit groove (31) is provided on the inner side of the main sleeve (3), a limit component that is easy to adjust is provided at the end of the protrusion (21), a spare connector (4) is provided on the side of the liquid cooling connector body (1), and internal branch pipes (5) are provided on both sides of the liquid cooling connector body (1) on the inner side of the box plate (6). A threaded hole (51) is provided at the bottom of the internal branch pipe (5), and a temperature sensor (7) is inserted into the threaded hole (51). The liquid cooling connector body (1) is provided with an opening and closing assembly that is easy to control. The opening and closing assembly includes a first extension sleeve (8), a first mounting block (82) is provided on the top of the first extension sleeve (8), a first sealing block (81) is slidably inserted on the first extension sleeve (8), a first airbag (83) is provided on the top of the first sealing block (81), the first airbag (83) is located between the first mounting block (82) and the first sealing block (81), a second extension sleeve (9) is provided on the bottom oblique side of the liquid cooling connector body (1), a second sealing block (93) is slidably inserted on the second extension sleeve (9), a second airbag (92) is provided at the end of the second sealing block (93), and a connecting pipe (97) is provided between the second airbag (92) and the first airbag (83) through the second mounting block (91) and the first mounting block (82).

2. The battery pack liquid cooling connector with automatic disconnection according to claim 1, characterized in that: The protrusions (21) are provided in multiple ways, and the multiple protrusions (21) are distributed in a circle around the outside of the main connector (2). The limiting groove (31) matches the protrusions (21), and the end of the main connector (2) is embedded with a sealing ring (22).

3. The automatically disconnecting liquid-cooled connector for a battery pack according to claim 1, characterized in that: The housing of the temperature sensor (7) is connected to the threaded hole (51) by internal and external threads, and the temperature sensor (7) is electrically connected to the control center.

4. The automatically disconnecting liquid-cooled connector for a battery pack according to claim 1, characterized in that: The limiting component includes a limiting block (24), a receiving groove is provided at the top of the end of the protrusion (21), and an installation plate (23) is provided at the opening of the receiving groove. The limiting block (24) has a "T" shaped block structure and an inclined surface structure on the outer side of the end. The limiting block (24) is slidably inserted into the installation plate (23).

5. The automatically disconnecting liquid-cooled connector for a battery pack according to claim 4, characterized in that: A slot (241) is provided on one side of the limiting block (24), and a cylinder (243) is provided on one side of the receiving groove on the protrusion (21). A plug (242) is provided at the telescopic end of the cylinder (243). The end of the plug (242) matches the slot (241). A support spring (25) is provided between the limiting block (24) and the receiving groove.

6. The automatically disconnecting liquid-cooled connector for a battery pack according to claim 1, characterized in that: The main sleeve (3) has a limiting groove (34) inside the limiting groove (31). The limiting groove (34) is a through groove structure. A pressure block (32) is slidably inserted into the limiting groove (34). A slider (33) is provided on both sides of the pressure block (32). A sliding groove is provided on both sides of the limiting groove (34). The slider (33) is located in the sliding groove. The pressure block (32) and the end of the limiting block (24) abut against each other.

7. The automatically disconnecting liquid-cooled connector for a battery pack according to claim 1, characterized in that: The first extension sleeve (8) is welded to the top of the liquid cooling connector body (1). An electric telescopic rod (84) is provided at the bottom of the liquid cooling connector body (1) on one side of the first sealing block (81). A first pressure sensor (85) is provided at the bottom of the liquid cooling connector body (1) on one side of the electric telescopic rod (84). The first pressure sensor (85) is electrically connected to the control center.

8. The automatically disconnecting liquid-cooled connector for a battery pack according to claim 1, characterized in that: The first sealing block (81) has an "L" shaped block structure and its end abuts against the opening of the main connector (2). The first mounting block (82) is provided with a first reminder light (86), which is electrically connected to the control center.

9. The automatically disconnecting liquid-cooled connector for a battery pack according to claim 1, characterized in that: The second extension sleeve (9) has a second mounting block (91) at its opening, and the second sealing block (93) has an "L" shaped block structure and its end abuts against the opening of the spare connector (4).

10. The automatically disconnecting liquid-cooled battery pack connector according to claim 9, characterized in that: The second mounting block (91) is provided with a second reminder light (96), which is electrically connected to the control center. A reset spring (94) is provided between the second sealing block (93) and one side of the inner cavity of the second extension sleeve (9). A second pressure sensor (95) is provided inside the liquid cooling connector body (1) on one side of the reset spring (94), and the second pressure sensor (95) is electrically connected to the control center.

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