CN110729428A - A new energy vehicle battery module conductive connector lap joint structure - Google Patents

Abstract

The invention discloses a new energy vehicle battery module conductive connector lap joint structure, comprising a first connecting plate and a second connecting plate, the first connecting plate is mounted on the first battery module body by fastening screws, The second connecting plate is mounted on the body of the second battery module by tightening screws, a rectangular groove is formed on the side wall of the first connecting plate, and a rectangular block is sealed and slidably connected in the rectangular groove. The side wall of the swivel is rotatably connected with a threaded rod. In the present invention, by setting the temperature sensor, when the ambient temperature of the battery module is too high and reaches a critical value, an electrical signal is sent and the internal circuit of the first electromagnet is turned on to generate a magnetic force, thereby pushing the repulsive permanent magnet toward the Move down and make the rack move down, push the gear and the threaded rod to rotate, thereby increasing the distance between the first battery module body and the second battery module, so that the heat emitted by the two battery modules can be quickly dissipated spread out.

Description

A new energy vehicle battery module conductive connector lap joint structure

technical field

The invention relates to the technical field of new energy vehicle battery related components, in particular to a new energy vehicle battery module conductive connector lap joint structure.

Background technique

The power battery modules of new energy vehicles are arranged in the battery pack box, most of which are connected in series, supplemented by management systems and high-voltage components to form a complete battery pack. The conductive connectors between the overlapping modules will affect the performance such as the service life of the battery module.

The conductive connectors between the existing lap modules can be divided into three forms: welding, screwing, and mechanical crimping according to the connection method between the battery core and the conductive busbar. The distance between the molds connected by these three forms is mostly It is fixed and cannot be adjusted autonomously according to the environment in which the battery is located. If the ambient temperature of the battery is too high, the distance between the battery modules is too small, so that the heat generated by the battery modules is difficult to dissipate, so that the battery modules are kept in a high temperature environment for a long time, which will destroy the chemical in the battery. balance, resulting in side reactions, which greatly reduce the service life of the battery module. If the distance between the battery modules is increased in pursuit of heat dissipation, the heat emitted by the battery modules is difficult to preserve, especially when the ambient temperature of the battery is too low (such as when driving outdoors in winter in the north). The electrolyte moves quite slowly at low temperatures, causing the battery to discharge less current, thereby reducing the power output of the power plant.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the shortcomings of the prior art, and proposes a new energy vehicle battery module conductive connector lap joint structure.

In order to achieve the above object, the present invention adopts the following technical solutions:

A new energy vehicle battery module conductive connector lap joint structure includes a first connecting plate and a second connecting plate, the first connecting plate is mounted on the body of the first battery module by fastening screws, the second connecting plate is The connecting plate is installed on the body of the second battery module by tightening screws, a rectangular groove is formed on the side wall of the first connecting plate, and a rectangular block is sealed and slidably connected in the rectangular groove, and the side wall of the rectangular block rotates A threaded rod is connected, the side wall of the first connecting plate is provided with a threaded hole, the threaded rod is threaded in the threaded hole, and the end of the threaded rod away from the first connecting plate is rotatably connected to the side of the second connecting plate On the wall, the side wall of the second connecting plate is provided with a mechanism slot, a drive device for driving the threaded rod to rotate is installed in the mechanism slot, and the side wall of the first battery module body is installed in sequence from bottom to top There are a first water inlet pipe and a second water inlet pipe, a water outlet pipe is installed on the side wall of the second battery module body, and a first cylinder is fixedly connected between the first water inlet pipe and the water outlet pipe, and the first A second cylinder is fixedly connected between the second water inlet pipe and the water outlet pipe, and both the second water inlet pipe and the water outlet pipe are communicated with the inside of the second cylinder, and the first water inlet pipe is fixedly connected to the lower end of the first connecting plate , the second water inlet pipe is fixedly connected to the upper end of the first connecting plate, and the first water inlet pipe and the second water inlet pipe are both communicated with the interior of the rectangular groove, and the first water inlet pipe, the second water inlet pipe and the water outlet pipe It is filled with cooling liquid, and a pushing device for pushing the flow of cooling liquid is installed in the first cylinder.

Preferably, the driving device includes a gear rotatably connected to the inner wall of the mechanism slot, the gear is coaxially and fixedly connected to the threaded rod, and a rack meshing with the gear is slidably connected to the inner wall of the mechanism slot. The upper end of the strip is embedded with a permanent magnet, the inner top of the mechanism slot is installed with a first electromagnet, and the magnetic pole of the permanent magnet repels the magnetic pole of the first electromagnet, and the mechanism slot is installed with a coupling coupled to the first electromagnet. A temperature sensor in a circuit powered by an electromagnet.

Preferably, the pushing device includes a sliding plug that is sealed and slidably connected in the first cylinder, the sliding plug is elastically connected to the inner wall of the first cylinder through a spring, and a second electromagnet is installed on the sliding plug, The upper end of the first cylinder is provided with a water inlet hole communicating with its interior, the side wall of the first cylinder is provided with a water outlet hole communicating with its interior, and a first one-way valve is installed on the sliding plug, so the A second one-way valve is installed in the water outlet hole.

Preferably, a rotating rod is fixedly connected to the first cylinder and the second cylinder coaxially, a bar magnet is fixedly connected to the rotating rod, a water wheel is fixedly connected to the rotating rod, and The water wheel is arranged just below the water inlet hole.

Preferably, a plurality of radiating fins are slidably connected to the circumferential side walls of the first cylinder and the second cylinder, and each two adjacent radiating fins are fixedly connected by an arc-shaped connecting rod. The circumferential side walls of the first cylinder and the second cylinder are provided with annular grooves, and two sliding blocks are slidably connected to the inner walls of the annular grooves, and the two sliding blocks are respectively fixed to two opposite radiating fins. connect.

Preferably, the heat dissipation fins are made of copper material with good thermal conductivity, and the slider is made of iron material that is easily attracted by magnets.

Preferably, the first one-way valve only allows the cooling liquid to flow from the side of the slide plug close to the bar magnet to the side of the slide plug that is far from the bar magnet, and the second one-way valve only allows the coolant to flow from the first circular The cartridge flows to the outlet pipe.

Preferably, a vent hole is formed on the side wall of the first connecting plate, and the vent hole communicates with the interior of the rectangular groove.

The present invention has the following beneficial effects:

1. By setting the temperature sensor, when the ambient temperature of the battery module is too high and reaches a critical value, an electrical signal is sent and the internal circuit of the first electromagnet is turned on to generate a magnetic force, thereby pushing the repulsive permanent magnet toward the battery module. Move down and make the rack move down, push the gear and the threaded rod to rotate, thereby increasing the distance between the first battery module body and the second battery module, so that the heat dissipated by the two battery modules can be quickly dissipated radiate out;

2. When the threaded rod moves, the rectangular block moves. At this time, the first water inlet pipe, the second water inlet pipe, the rectangular groove, the first cylinder and the second cylinder form a sealed circuit, and the electrical signal sent by the temperature sensor makes the second water inlet pipe The electromagnet generates magnetism intermittently, which can make the sliding plug move back and forth continuously in the first cylinder, which can push the cooling liquid to circulate in the sealed circuit, so that when the temperature of the battery module is too high, water-cooling and efficient heat dissipation can be carried out;

3. By setting copper radiating fins on the outer walls of the first cylinder and the second cylinder, when the cooling liquid flows into the first cylinder and the second cylinder, the heat absorbed by the cooling liquid is absorbed by the radiating fins And radiate it out, so that the coolant can always maintain a lower temperature state and continue to cool down;

3. When the water flows into the first cylinder and the second cylinder, it can push the water wheel to rotate, and drive the rotating rod and bar magnet coaxial with it to rotate, thereby attracting the slider to slide in the annular groove, which can drive many Each heat dissipation fin rotates around the axis of the first cylinder or the second cylinder to speed up the air flow between the two battery modules and further improve the heat dissipation efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of the lap joint structure of a new energy vehicle battery module conductive connector proposed by the present invention;

2 is an enlarged schematic view of the structure at position A of the lap joint structure of a new energy vehicle battery module conductive connector proposed by the present invention;

3 is an enlarged schematic view of the structure at position B of the lap joint structure of a new energy vehicle battery module conductive connector proposed by the present invention;

FIG. 4 is a schematic cross-sectional structural diagram at the C-C position of the lap joint structure of a new energy vehicle battery module conductive connector proposed by the present invention;

FIG. 5 is a schematic cross-sectional structural diagram at D-D of a lap joint structure of a new energy vehicle battery module conductive connector according to the present invention.

In the figure: 1. The first battery module body, 2. The second connecting plate, 3. The first connecting plate, 4. Rectangular slot, 5. Rectangular block, 6. threaded rod, 7. threaded hole, 8. mechanism slot, 9. gear, 10. rack, 11 first electromagnet, 12 permanent magnet, 13 guide groove, 14 guide block, 15 water outlet pipe, 16 second battery module body, 17 first water inlet pipe, 18 second water inlet pipe, 19 first cylinder, 20 water outlet Hole, 21 water inlet hole, 22 cooling fin, 23 rotating rod, 24 annular groove, 25 sliding block, 26 water wheel, 27 bar magnet, 28 sliding plug, 29 spring, 30 second electromagnet, 31 second circle Cylinder, 32 arc connecting rod.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

1-5, a new energy vehicle battery module conductive connector lap joint structure, including a first connecting plate 3 and a second connecting plate 2, the first connecting plate 3 is installed on the first battery module by fastening screws On the main body 1, the second connecting plate 2 is installed on the second battery module body 16 by fastening screws, the side wall of the first connecting plate 3 is provided with a rectangular slot 4, and the side wall of the first connecting plate 3 is provided with ventilation holes , and the ventilation hole communicates with the interior of the rectangular groove 4 , and a rectangular block 5 is sealed and slidably connected in the rectangular groove 4 .

It should be noted that, by arranging a ventilation hole communicating with the interior of the rectangular groove 4 , the movement of the rectangular block 5 in the rectangular groove 4 can be facilitated without being hindered.

The side wall of the rectangular block 5 is rotatably connected with a threaded rod 6, the side wall of the first connecting plate 3 is provided with a threaded hole 7, the threaded rod 6 is threaded in the threaded hole 7, and the end of the threaded rod 6 away from the first connecting plate 3 rotates It is connected to the side wall of the second connecting plate 2. The side wall of the second connecting plate 2 is provided with a mechanism slot 8. The mechanism slot 8 is installed with a driving device that drives the threaded rod 6 to rotate. The side of the first battery module body 1 A first water inlet pipe 17 and a second water inlet pipe 18 are sequentially installed on the wall from bottom to top, and a water outlet pipe 15 is installed on the side wall of the second battery module body 16 , and the first water inlet pipe 17 and the water outlet pipe 15 are fixed between A first cylinder 19 is connected, a second cylinder 31 is fixedly connected between the second water inlet pipe 18 and the water outlet pipe 15, and both the second water inlet pipe 18 and the water outlet pipe 15 are communicated with the inside of the second cylinder 31, the first The water inlet pipe 17 is fixedly connected to the lower end of the first connecting plate 3 , and the second water inlet pipe 18 is fixedly connected to the upper end of the first connecting plate 3 .

When the rectangular block 5 is removed, the first water inlet pipe 17 , the second water inlet pipe 18 , the rectangular groove 4 , the first cylinder 19 , the water outlet pipe 15 and the second cylinder 31 form a sealed circuit.

And the first water inlet pipe 17 and the second water inlet pipe 18 are both connected with the interior of the rectangular groove 4, the first water inlet pipe 17, the second water inlet pipe 18 and the water outlet pipe 15 are filled with cooling liquid, and the first cylinder 19 is installed with a pusher. A driving device for the flow of cooling liquid, a plurality of radiating fins 22 are slidably connected to the circumferential side walls of the first cylinder 19 and the second cylinder 31, and every two adjacent radiating fins 22 are connected by an arc-shaped connecting rod 32 is fixedly connected, the circumferential side walls of the first cylinder 19 and the second cylinder 31 are provided with an annular groove 24, and the inner wall of the annular groove 24 is slidably connected with two sliding blocks 25, and the two sliding blocks 25 are respectively connected with the two sliding blocks 25. Two opposite heat dissipation fins 22 are fixedly connected, the heat dissipation fins 22 are made of copper material with good thermal conductivity, and the slider 25 is made of iron material that is easily attracted by magnets.

The driving device includes a gear 9 that is rotatably connected to the inner wall of the mechanism slot 8, and the gear 9 is coaxially and fixedly connected to the threaded rod 6. The inner wall of the mechanism slot 8 is slidably connected with a rack 10 that meshes with the gear 9. The upper end of the rack 10 is slidably connected. A permanent magnet 12 is embedded, a first electromagnet 11 is installed on the inner top of the mechanism slot 8 , and the magnetic poles of the permanent magnet 12 and the magnetic poles of the first electromagnet 11 repel.

It should be noted that the electromagnets are all made of coils and iron cores. When the first electromagnet 11 loses its magnetism, the permanent magnet 12 will be attracted by the iron core inside. A temperature sensor coupled to the power supply circuit of the first electromagnet 11 is installed in the mechanism slot 8 . It should be noted that the temperature sensor is an existing electrical control device, and the connection method between the temperature sensor and the power supply circuit of the first electromagnet 11 is also an existing mature technology.

The pushing device includes a sliding plug 28 sealed and slidingly connected in the first cylinder 19 , the sliding plug 28 is elastically connected to the inner wall of the first cylinder 19 through a spring 29 , and a second electromagnet 30 is installed on the sliding plug 28 .

It should be noted that a PLC control module is installed on the second electromagnet 30, and the PLC control module is electrically connected to the temperature sensor to control the on-off of the internal current of the second electromagnet 30, and when the temperature rises to a critical level, the temperature The electric signal sent by the sensor makes the internal current of the second electromagnet 30 intermittently on and off under the action of the PLC control module.

The upper end of the first cylinder 19 is provided with a water inlet hole 21 that communicates with its interior, the side wall of the first cylinder 19 is provided with a water outlet hole 20 that communicates with its interior, and a first one-way valve is installed on the slide plug 28. A second one-way valve is installed in 20. The first one-way valve only allows the coolant to flow from the side of the spool 28 close to the bar magnet 27 to the side of the spool 28 that is far from the bar magnet 27. Cooling liquid is allowed to flow from the first cylinder 19 to the water outlet pipe 15 .

The first cylinder 19 and the second cylinder 31 are both coaxially and fixedly connected with a rotating rod 23, the rotating rod 23 is fixedly connected with a bar magnet 27, and the rotating rod 23 is coaxially fixedly connected with a water wheel 26, and the water wheel 26 is arranged just below the water inlet hole 21 .

In the present invention, if the ambient temperature of the battery module is too low, the temperature sensor sends an electrical signal to disconnect the internal current of the first electromagnet 11 , the first electromagnet 11 loses its magnetism, and the permanent magnet 12 is blocked by the inside of the first electromagnet 11 . Attracted by the iron core, it drives the rack 10 to move upward, thereby rotating the gear 9, so that the threaded rod 6 rotates in the threaded hole 7 and moves horizontally, thereby reducing the size of the first battery module body 1 and the second battery module body 16 This can greatly reduce the heat dissipation, maintain the temperature of the battery module, and prevent the temperature from being too low and reducing the output power.

If the ambient temperature of the battery module is too high, the temperature sensor sends an electrical signal to conduct the internal current of the first electromagnet 11, and the first electromagnet 11 generates a magnetic force to push the permanent magnet 12 and the rack 10 to move down, thereby pushing the gear 9 And the threaded rod 6 rotates in the threaded hole 7, which can increase the distance between the first battery module body 1 and the second battery module body 16, so as to facilitate the heat generated by the battery module to dissipate, and can drag the rectangular The block 5 moves in the rectangular slot 4, at this time, the first water inlet pipe 17 and the second water inlet pipe 18 are connected, and the electrical signal from the temperature sensor makes the second electromagnet 30 energized intermittently, so that the second electromagnet is energized intermittently. 30 generates magnetic force intermittently. When the second electromagnet 30 generates magnetic force, it is repelled by the bar magnet 27, pushes the slide plug 28 away from the bar magnet 27 and draws the cooling liquid into the first cylinder 19. When the electromagnet 30 loses its magnetic force, the spring pushes the sliding plug 28 to reset, and the sliding plug 28 pushes the cooling liquid into the water outlet pipe 15, so that with the continuous back and forth movement of the sliding plug 28, the cooling liquid can be circulated for efficient heat dissipation. .

When the cooling liquid flows into the first cylinder 19 and the second cylinder 31, the cooling liquid can push the water wheel 26 to rotate when the cooling liquid flows into the water inlet hole 21, thereby driving the rotating rod 23 and the bar magnet 27 to rotate, thereby attracting The slider 25 slides in the annular groove 24 , thereby rotating the heat dissipation fins 22 , which can accelerate the air flow between the first battery module body 1 and the second battery module body 16 and further improve the heat dissipation effect.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (8)

1. A new energy vehicle battery module conductive connector lap joint structure, comprising a first connecting plate (3) and a second connecting plate (2), the first connecting plate (3) is mounted on the first connecting plate (3) by fastening screws. On a battery module body (1), the second connecting plate (2) is mounted on the second battery module body (16) by fastening screws, characterized in that the first connecting plate (3) has The side wall is provided with a rectangular groove (4), a rectangular block (5) is sealed and slidably connected in the rectangular groove (4), and a threaded rod (6) is rotatably connected to the side wall of the rectangular block (5). A threaded hole (7) is formed on the side wall of a connecting plate (3), the threaded rod (6) is threaded in the threaded hole (7), and the threaded rod (6) is away from the first connecting plate (3). One end is rotatably connected to the side wall of the second connecting plate (2), the side wall of the second connecting plate (2) is provided with a mechanism groove (8), and a driving threaded rod (8) is installed in the mechanism groove (8). 6) A rotating drive device, a first water inlet pipe (17) and a second water inlet pipe (18) are sequentially installed on the side wall of the first battery module body (1) from bottom to top, and the second battery A water outlet pipe (15) is installed on the side wall of the module body (16), and a first cylinder (19) is fixedly connected between the first water inlet pipe (17) and the water outlet pipe (15). A second cylinder (31) is fixedly connected between the water inlet pipe (18) and the water outlet pipe (15), and the second water inlet pipe (18) and the water outlet pipe (15) are both connected to the inside of the second cylinder (31). The first water inlet pipe (17) is fixedly connected to the lower end of the first connecting plate (3), the second water inlet pipe (18) is fixedly connected to the upper end of the first connecting plate (3), and the second water inlet pipe (18) is fixedly connected to the upper end of the first connecting plate (3). A water inlet pipe (17) and a second water inlet pipe (18) are both communicated with the interior of the rectangular groove (4), and the first water inlet pipe (17), the second water inlet pipe (18) and the water outlet pipe (15) are filled with Cooling liquid, a pushing device for pushing the cooling liquid to flow is installed in the first cylinder (19). 2. A new energy vehicle battery module conductive connector lap joint structure according to claim 1, wherein the drive device comprises a gear (9) rotatably connected to the inner wall of the mechanism slot (8), and The gear (9) is coaxially and fixedly connected to the threaded rod (6), and a rack (10) meshing with the gear (9) is slidably connected to the inner wall of the mechanism slot (8). The rack (10) A permanent magnet (12) is embedded in the upper end of the mechanism slot (8), a first electromagnet (11) is installed on the inner top of the mechanism slot (8), and the magnetic pole of the permanent magnet (12) is in line with the magnetic pole of the first electromagnet (11). The magnetic poles repel each other, and a temperature sensor coupled to the power supply circuit of the first electromagnet (11) is installed in the mechanism slot (8). 3. The lap joint structure of a new energy vehicle battery module conductive connector according to claim 1, wherein the pushing device comprises a sliding plug (28) which is sealed and slidably connected in the first cylinder (19). ), the sliding plug (28) is elastically connected to the inner wall of the first cylinder (19) through a spring (29), a second electromagnet (30) is installed on the sliding plug (28), and the first The upper end of the cylinder (19) is provided with a water inlet hole (21) which communicates with the inside thereof, the side wall of the first cylinder (19) is provided with a water outlet hole (20) which communicates with its interior, and the sliding plug (28) ) is installed with a first one-way valve, and a second one-way valve is installed in the water outlet hole (20). 4. The lap joint structure of a new energy vehicle battery module conductive connector according to claim 3, wherein the first cylinder (19) and the second cylinder (31) are both coaxially fixed inside A rotating rod (23) is connected, a bar magnet (27) is fixedly connected to the rotating rod (23), a water wheel (26) is coaxially and fixedly connected to the rotating rod (23), and the water wheel (26) is arranged just below the water inlet hole (21). 5. A new energy vehicle battery module conductive connector lap joint structure according to claim 1, wherein the first cylinder (19) and the second cylinder (31) are on the circumferential side walls of the A plurality of radiating fins (22) are slidably connected to each other, and each two adjacent radiating fins (22) are fixedly connected by an arc-shaped connecting rod (32). The first cylinder (19) is connected to the second circular An annular groove (24) is formed on the circumferential side wall of the cylinder (31), and two sliding blocks (25) are slidably connected to the inner wall of the annular groove (24), and the two sliding blocks (25) are respectively connected to the inner wall of the annular groove (24). Two opposite heat dissipation fins (22) are fixedly connected. 6 . The lap joint structure of a new energy vehicle battery module conductive connector according to claim 5 , wherein the heat dissipation fins ( 22 ) are made of copper material with good thermal conductivity, and the sliders ( 25) Made of iron material that is easily attracted by magnets. 7. The lap structure of a new energy vehicle battery module conductive connector according to claim 3, wherein the first one-way valve only allows the cooling liquid to approach the bar magnet (from the slide plug (28)) 27) The flow direction slide plug (28) on one side is away from the side of the bar magnet (27), and the second one-way valve only allows the cooling liquid to flow from the first cylinder (19) to the water outlet pipe (15). 8. A new energy vehicle battery module conductive connector lap joint structure according to claim 1, characterized in that, the side wall of the first connecting plate (3) is provided with ventilation holes, and the ventilation holes It communicates with the interior of the rectangular groove (4).

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