A power supply connection structure based on power battery pack

Abstract

The present invention discloses a power supply connection structure based on a power battery pack, and relates to the technical field of battery packs. In the present invention, a plurality of battery positioning mechanisms are installed in a linear array between battery carrying components, and the inner walls of the first hollow positioning plate and the second hollow positioning plate are provided with heat dissipation channels connected to their inner cavities, and the first hollow positioning plate and the second hollow positioning plate are both connected to the flow guide component, and the first flow guide portion between the two adjacent flow guide components is connected to the first flow guide pipe, the air flow inlet pipe is connected to the corresponding first flow guide portion, and the air flow outlet pipe is connected to the corresponding first flow guide pipe, and a temperature sensor is installed at the bottom of the temperature monitoring plate. The present invention can realize the flow of air between each flow guide component by connecting the first flow guide portion between the two adjacent flow guide components with the first flow guide pipe, connecting the air flow inlet pipe with the corresponding first flow guide portion, and connecting the air flow outlet pipe with the corresponding first flow guide pipe, so as to simultaneously realize the air cooling and heat dissipation of each lithium battery.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery packs, and in particular relates to a power supply connection structure based on a power battery pack. Background Art

[0002] A lithium battery pack fixes multiple lithium batteries in a box body, and the multiple lithium batteries supply power to the outside together. Since multiple lithium batteries are gathered together, heat will accumulate in the battery pack box body when the lithium batteries are working. The box body further protects the lithium batteries and has a waterproof and dustproof effect. The power connection components in the battery pack box body are also protected to avoid power leakage.

[0003] In order to achieve internal heat dissipation of the lithium battery pack, the prior art generally directly introduces air into the battery pack box through a cooling fan, and uses the flow of air inside the battery pack box to take away the heat generated during the operation of the battery, thereby achieving the purpose of heat dissipation during the operation of the lithium battery.

[0004] However, the above heat dissipation method will cause external dust to accumulate in the battery pack box during a long period of heat dissipation. The dust that enters will corrode the electrical components, thereby affecting the heat dissipation effect of the lithium battery inside the battery pack shell, and ultimately reducing the service life of the lithium battery. Although the dust filter structure can reduce the dust from entering the shell, as the dust accumulates on the dust filter structure, it is easy to cause the flow performance of the dust filter structure to decrease, thereby reducing the heat dissipation effect of the lithium battery. To this end, we provide a power supply connection structure based on a power battery pack to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a power supply connection structure based on a power battery pack, which solves the problems in the above-mentioned background technology through the specific structural design of the power supply connection box, battery carrying assembly, battery positioning mechanism, linkage control assembly and air intake dust filter assembly.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a power supply connection structure based on a power battery pack, comprising a power supply connection box, wherein an airflow inlet pipe is installed inside the power supply connection box, and an airflow outlet pipe fixed to the power supply connection box is arranged on the opposite side of the airflow inlet pipe; a battery supporting assembly is installed inside the power supply connection box, and a plurality of battery positioning mechanisms are installed in a linear array between the battery supporting assemblies; wherein the battery positioning mechanism comprises a battery positioning assembly, wherein the battery positioning assembly is arranged in a one-to-one correspondence with the battery supporting assembly, and the battery positioning assembly is installed on the top of the corresponding battery supporting assembly, and the battery positioning assembly comprises a first hollow positioning plate and a second hollow positioning plate which are symmetrically arranged, and the inner walls of the first hollow positioning plate and the second hollow positioning plate are both provided with heat dissipation channels connected with their inner cavities; and a flow guide assembly, wherein the flow guide assembly Fixedly installed inside the power supply connection box, the first hollow positioning plate and the second hollow positioning plate are both connected to the guide component, the guide component includes a first guide part and a first guide tube, the first guide part between two adjacent guide components is connected to the first guide tube, the airflow inlet pipe is connected to the corresponding first guide part, and the airflow outlet pipe is connected to the corresponding first guide tube; a temperature monitoring plate is arranged above the battery supporting assembly, a temperature monitoring port is arranged between the first hollow positioning plate and the second hollow positioning plate, the temperature monitoring plate is located inside the corresponding temperature monitoring port, a temperature sensor is installed at the bottom of the temperature monitoring plate, and the heat on the surface of the lithium battery is dissipated with the airflow by controlling the flow of the airflow between each first hollow positioning plate and the second hollow positioning plate, using the heat dissipation holes.

[0008] The present invention is further configured such that the battery positioning assembly also includes a symmetrically arranged first end sealing plate and a second end sealing plate, wherein an arc-shaped guide cavity is opened inside the first end sealing plate and the second end sealing plate, and wiring ports are opened on the surfaces of the first end sealing plate and the second end sealing plate, and the first hollow positioning plate and the second hollow positioning plate are both fitted with the first end sealing plate and the second end sealing plate on both sides thereof, and hollow connecting parts connected to the arc-shaped guide cavity are fixedly arranged on the surfaces of the first end sealing plate and the second end sealing plate, and an unfolding movable seat is fixedly arranged on the peripheral side surfaces of the first hollow positioning plate and the second hollow positioning plate, and an internal threaded tube is fixedly arranged in the mounting hole on the unfolding movable seat.

[0009] The present invention is further configured such that a vertical fixed seat is provided on one side of the first end sealing plate and the second end sealing plate, and the arrangement directions of the two vertical fixed seats are opposite, the elastic element fixed on the first end sealing plate is connected to the corresponding vertical fixed seat, and the elastic element fixed on the second end sealing plate is connected to the corresponding vertical fixed seat, and two limiting guide plates are fixedly provided on the surface of the vertical fixed seat, and the first end sealing plate and the second end sealing plate are both slidably fitted between the two limiting guide plates; a first driven plate is fitted on the outer wall of the first hollow positioning plate, and the first driven plate and the first end sealing plate are fixedly connected by an axial linkage rod, the first driven plate is fixedly connected to the temperature monitoring plate, and a second driven plate is fitted on the outer wall of the second hollow positioning plate, and the second driven plate and the second end sealing plate are fixedly connected by an axial linkage rod, and the arc-shaped guide cavity and the first hollow positioning plate and the second hollow positioning plate on one side of it are both connected through a flow channel.

[0010] The present invention is further configured such that the battery carrying assembly includes a battery carrying plate arranged inside the power supply connection box, the battery carrying plate is connected to the power supply connection box by fasteners, the first end sealing plate, the second end sealing plate and the unfolding movable seat are all slidably arranged on the top of the battery carrying plate, the vertical fixed seat is fixedly arranged on the top of the battery carrying plate, a battery mounting base is fixedly arranged on the top of the battery carrying plate, and the first hollow positioning plate and the second hollow positioning plate are symmetrically arranged on both sides of the battery mounting base.

[0011] The present invention is further configured such that the flow guide assembly also includes a second flow guide portion, a third flow guide portion and a fourth flow guide portion, the first flow guide portion, the second flow guide portion, the third flow guide portion and the fourth flow guide portion are all clearance-fitted inside the corresponding hollow connecting portion, the upper end portion of the first flow guide tube is fixedly arranged on the fourth flow guide portion and the two are connected, the second flow guide portion and the third flow guide portion are connected through the second flow guide tube, and the first flow guide portion, the first flow guide tube and the second flow guide tube are all fixed to the inner wall of the power supply connection box through a connecting piece.

[0012] The present invention is further configured such that a battery installation control shaft is rotatably provided on the top of the battery supporting plate, the battery installation control shaft is threadedly matched with each internal threaded tube sleeved thereon, a transmission wheel is fixedly installed on the peripheral side of the battery installation control shaft, and a transmission opening corresponding to the position of the transmission wheel is opened on the top of the battery supporting plate.

[0013] The present invention is further configured as follows: the present invention also includes a linkage control component; wherein, the linkage control component includes a linkage control rod rotatably arranged on the top of the upper battery supporting plate, the linkage control rod is threaded with an engaging transmission part that slides with the corresponding transmission port, one side of the engaging transmission part is engaged with a transmission gear fixed on the corresponding battery installation control shaft, the upper and lower transmission wheels are connected by a linkage belt, and the linkage belt is arranged between the upper and lower transmission ports.

[0014] The present invention is further configured as follows: a first partition plate and a second partition plate are fixedly arranged in the equipment cavity at the bottom of the power supply connection box, and the equipment cavity is divided into an airflow conveying compartment, an air inlet compartment and an air exhaust compartment by the first partition plate and the second partition plate; an airflow conveyor is installed inside the airflow conveying compartment, the airflow inlet pipe is connected to the air outlet of the airflow conveyor, and the air inlet of the airflow conveyor is connected to the airflow conveying pipe; a hollow guide box is fixedly arranged in the equipment cavity at the bottom of the power supply connection box, the inner wall of the hollow guide box is provided with an airflow input port connected to its inner cavity, and a one-way valve is installed on the airflow exhaust pipe.

[0015] The present invention is further configured as follows: the present invention also includes an air intake dust filter assembly installed in an equipment cavity at the bottom inner of the power supply connection box; wherein, the air intake dust filter assembly includes an air intake dust filter ring rotatably arranged between the first partition plate and the second partition plate, the hollow guide box is fitted on the outer wall of the air intake dust filter ring and the two are coaxial, a chamber partition is fixedly arranged inside the air intake dust filter ring, the chamber partition divides the inner cavity of the air intake dust filter ring into a first chamber and a second chamber, two groups of first screen structures and second screen structures are respectively opened on the outer wall of the air intake dust filter ring, and the first chamber and the second chamber are respectively connected to the corresponding first screen structure and second screen structure.

[0016] The present invention is further configured such that a chamber switching gear is fixedly provided on the top of the chamber partition, a switching control rack meshing with the chamber switching gear is slidably provided inside the power supply connection box, an output shaft of a switching control motor installed inside the air inlet bin is connected to a power gear meshing with the switching control rack, a backwashing air pipe connected to the inner cavity of the air inlet dust filter ring is fixedly installed inside the power supply connection box, the backwashing air pipe is connected to the corresponding first guide pipe, and an electromagnetic opening and closing valve is installed on the backwashing air pipe.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention allows filtered air to enter the arc-shaped guide cavity on the first end sealing plate through the hollow connection portion on the first end sealing plate, and then enter the first hollow positioning plate and the second hollow positioning plate through the flow channel in the arc-shaped guide cavity, and then enter the arc-shaped guide cavity on the second end sealing plate through the flow channel at the second end sealing plate, and then flow out to the second guide pipe through the hollow connection portion on the second end sealing plate, and then the air flow in the second guide pipe enters the arc-shaped guide cavity on the second end sealing plate through the hollow connection portion above. Then, the air flows through the flow channel at the position of the second end sealing plate into the first hollow positioning plate and the second hollow positioning plate above, and then flows through the flow channel at the first end sealing plate above into the arc-shaped guide cavity on the first end sealing plate above, and then flows out from the hollow connecting part on the first end sealing plate above to the first guide pipe, and finally flows from the first guide pipe into the first guide part on the next guide component, thereby realizing the flow of air between the various guide components, thereby realizing air cooling and heat dissipation of each lithium battery at the same time.

[0019] 2. The present invention drives the meshing transmission part to move upward when the control linkage control lever rotates forward, and utilizes the meshing transmission part to drive the rotation of the transmission gear, and drives the upper and lower battery installation control shafts to rotate synchronously under the action of the linkage belt. Under the thread cooperation between the battery installation control shaft and the internal threaded tube, the two unfolding moving seats on each battery positioning assembly can be moved away from each other. In this process, the movement of the first hollow positioning plate drives the first driven plate to move synchronously, and under the action of the axial linkage rod, the first end sealing plate is driven to move synchronously and compress the corresponding elastic element. At the same time, the movement of the second hollow positioning plate drives the second driven plate to move synchronously. Move, and under the action of the axial linkage rod, the second end sealing plate is driven to move synchronously and compress the corresponding elastic element until the first hollow positioning plate and the second hollow positioning plate on each battery positioning assembly are unfolded. After each lithium battery is placed on the corresponding battery mounting base, the meshing transmission part is driven to gradually reset downward by rotating the linkage control rod in the opposite direction. Under the synchronous reverse rotation of the upper and lower battery mounting control shafts, the first hollow positioning plate and the second hollow positioning plate on each battery positioning assembly are brought close to each other until the first hollow positioning plate and the second hollow positioning plate are attached to the surface of the lithium battery, thereby realizing the rapid installation of the lithium battery.

[0020] 3. When the temperature sensor on the temperature monitoring board of the present invention detects that the surface temperature of a certain lithium battery is close to the set temperature threshold, the control unit installed on the power connection box receives the temperature signal and starts the airflow conveyor, through which the external air is allowed to enter the first guide part located below the first battery positioning mechanism along the airflow inlet pipe, and is discharged from the corresponding first guide pipe to the first guide part on the second battery positioning mechanism after passing through the guide component on the first battery positioning mechanism, and is discharged from the corresponding first guide pipe to the first guide part on the third battery positioning mechanism after passing through the guide component on the second battery positioning mechanism, and is finally discharged from the airflow outer exhaust pipe to the outside of the power connection box according to the airflow flow trajectory, thereby realizing synchronous air cooling and heat dissipation processing of each lithium battery until the monitored surface temperature of the lithium battery is reduced to a lower range, and by this intermittent air cooling and heat dissipation method of real-time monitoring of battery temperature, electric energy can be saved while realizing effective heat dissipation of the battery.

[0021] 4. After the entire power battery pack has been working for a period of time, the control unit of the present invention controls the electromagnetic opening and closing valve to open and starts the switching control motor at the same time, and controls the power gear to rotate through the switching control motor. Under the action of the switching control rack, the chamber switching gear is driven to rotate synchronously, and then the air intake dust filter ring fixed on the chamber partition is driven to rotate 180° counterclockwise. At this time, the first chamber rotates to the inside of the exhaust bin and aligns with the electromagnetic opening and closing valve, and the second screen structure at the second chamber is aligned with the airflow input port on the hollow guide box. Under the action of the airflow conveyor, the external air is filtered through the first screen structure on the second chamber. Then it enters the second chamber, and then enters the airflow inlet through the second screen structure at the second chamber, and then enters the airflow conveyor through the airflow conveying pipe and outputs from the airflow inlet pipe to the first guide part located below the first battery positioning mechanism, thereby realizing air cooling and heat dissipation of each lithium battery through the flowing air flow. In this process, part of the air flow enters the first chamber along the backwashing air pipe, and the air flow entering the first chamber is discharged from the corresponding first screen structure and second screen structure at the same time, thereby realizing backwashing of the first screen structure and the second screen structure at the first chamber position.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 The figure is a schematic diagram of a power supply connection structure based on a power battery pack.

[0025] Figure 2 for Figure 1 Top view of the structure.

[0026] Figure 3 It is a schematic diagram of the internal structure of the power supply connection structure in the present invention.

[0027] Figure 4 It is a partial structural schematic diagram of the power supply connection structure in the present invention.

[0028] Figure 5 It is a diagram showing the matching relationship between the battery carrying assembly and the battery positioning assembly in the present invention.

[0029] Figure 6 It is a longitudinal structural sectional view of the power supply connection box in the present invention.

[0030] Figure 7 It is a cross-sectional view of the structure of the power supply connection box in the present invention.

[0031] Figure 8 It is a structural schematic diagram of the battery positioning mechanism in the present invention.

[0032] Fig. 9 It is a schematic diagram of the structure of the battery positioning assembly in the present invention.

[0033] Fig.10 for Fig. 9 Schematic diagram of the structure from an upward perspective.

[0034] Fig.11 for Fig. 9 A longitudinal structural cross-sectional view.

[0035] Fig.12 for Fig. 9 Another longitudinal structural cross-sectional view.

[0036] Fig.13 It is a schematic diagram of the structure of the flow guide component in the present invention.

[0037] Fig.14 It is a schematic diagram of the structure of the air intake dust filter assembly in the present invention.

[0038] Fig.15 for Fig.14 Top view of the structure.

[0039] Fig.16 It is a structural schematic diagram of the linkage control component in the present invention.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 1-power supply connection box, 101-air flow inlet pipe, 102-air flow outlet pipe, 103-first partition plate, 104-second partition plate, 105-air flow delivery chamber, 106-air inlet chamber, 107-air exhaust chamber, 108-air flow conveyor, 109-air flow delivery pipe, 110-hollow guide box, 111-air flow input port, 112-check valve, 2-battery bearing assembly, 201-battery bearing plate, 202-battery installation control shaft, 203- Transmission wheel, 204-transmission port, 3-battery positioning mechanism, 4-battery positioning assembly, 401-first hollow positioning plate, 402-second hollow positioning plate, 403-heat dissipation channel, 404-temperature monitoring plate, 405-first end sealing plate, 406-second end sealing plate, 407-arc-shaped flow guide cavity, 408-wiring port, 409-hollow connection part, 410-expanding movable seat, 411-internal threaded tube, 412-vertical fixed seat, 413-elastic element Components, 414-limiting guide plate, 415-first driven plate, 416-axial linkage rod, 417-second driven plate, 418-flow channel, 419-battery mounting base, 5-flow guide assembly, 501-first flow guide part, 502-first flow guide pipe, 503-second flow guide part, 504-third flow guide part, 505-fourth flow guide part, 506-second flow guide pipe, 507-connecting piece, 6-linkage control assembly, 601-linkage control rod, 60 2-meshing transmission part, 603-transmission gear, 604-linkage belt, 7-air intake dust filter assembly, 701-air intake dust filter ring, 702-chamber partition, 703-first chamber, 704-second chamber, 705-first screen structure, 706-second screen structure, 707-chamber switching gear, 708-switching control rack, 709-switching control motor, 710-power gear, 711-backwashing air pipe, 712-electromagnetic opening and closing valve. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] For specific embodiment 1, please refer to Figure 1-16The present invention is a power supply connection structure based on a power battery pack, including a power supply connection box 1, an air flow inlet pipe 101 is installed inside the power supply connection box 1, and an air flow outlet pipe 102 fixed to the power supply connection box 1 is arranged on the opposite side of the air flow inlet pipe 101; a battery carrying assembly 2 is installed inside the power supply connection box 1, and a plurality of battery positioning mechanisms 3 are installed in a linear array between the battery carrying assemblies 2. In this embodiment, two battery carrying assemblies 2 are arranged from top to bottom, and each battery positioning mechanism 3 is installed between the two battery carrying assemblies 2;

[0044] Among them, the battery positioning mechanism 3 includes a battery positioning component 4 and a flow guide component 5. The battery positioning component 4 is arranged in a one-to-one correspondence with the battery supporting component 2. The battery positioning component 4 is installed on the top of the corresponding battery supporting component 2. The battery positioning component 4 includes a first hollow positioning plate 401 and a second hollow positioning plate 402 that are symmetrically arranged. The inner walls of the first hollow positioning plate 401 and the second hollow positioning plate 402 are both provided with heat dissipation holes 403 connected to their inner cavities. In this embodiment, the lithium battery is installed between the first hollow positioning plate 401 and the second hollow positioning plate 402. The first hollow positioning plate 401 and the second hollow positioning plate 402 are close to the surface of the lithium battery. Through the rapid flow of airflow inside the first hollow positioning plate 401 and the second hollow positioning plate 402, the flow The flowing air flow takes away the heat generated on the surface of the lithium battery along the heat dissipation duct 403, thereby realizing the heat dissipation of the lithium battery; the guide component 5 is fixedly installed inside the power supply connection box 1, the first hollow positioning plate 401 and the second hollow positioning plate 402 are both connected to the guide component 5, the guide component 5 includes a first guide part 501 and a first guide tube 502, the first guide part 501 between two adjacent guide components 5 is connected to the first guide tube 502, the air flow inlet pipe 101 is connected to the corresponding first guide part 501, and the air flow outlet pipe 102 is connected to the corresponding first guide tube 502. Through the above-mentioned specific structural design, the air flow between each battery positioning component 4 can be realized, thereby realizing the air heat dissipation of each lithium battery at the same time;

[0045] A temperature monitoring plate 404 is arranged above the battery supporting assembly 2, a temperature monitoring port is arranged between the first hollow positioning plate 401 and the second hollow positioning plate 402, the temperature monitoring plate 404 is located inside the corresponding temperature monitoring port, and a temperature sensor is installed at the bottom of the temperature monitoring plate 404. Since each temperature sensor on the temperature monitoring plate 404 is close to the lithium battery, the temperature of the surface of the lithium battery can be monitored in real time through the temperature sensor, and the flow of airflow between each first hollow positioning plate 401 and the second hollow positioning plate 402 is controlled, and the heat dissipation channel 403 is used to allow the heat on the surface of the lithium battery to dissipate with the airflow.

[0046] In this embodiment of the present invention, the battery positioning assembly 4 also includes a first end sealing plate 405 and a second end sealing plate 406 that are symmetrically arranged. The first end sealing plate 405 and the second end sealing plate 406 are both provided with an arc-shaped flow guide cavity 407. The first end sealing plate 405 and the second end sealing plate 406 are both provided with a wiring port 408 on the surface. The wire can be connected to the terminal at the end of the lithium battery through the wiring port 408. The first hollow positioning plate 401 and the second hollow positioning plate 402 are both fitted with the first end sealing plate 405 and the second end sealing plate 406 on both sides thereof. The first end sealing plate 405 and the second end sealing plate 406 are both fixedly provided with a connection port 408 that is connected to the arc-shaped flow guide cavity 407. The hollow connecting portion 409 connected to the cavity 407, the first hollow positioning plate 401 and the second hollow positioning plate 402 are fixedly provided with an unfolding movable seat 410 on the surrounding side surfaces, and the mounting hole on the unfolding movable seat 410 is fixedly provided with an internal threaded tube 411. By controlling the two unfolding movable seats 410 on each battery positioning assembly 4 to move toward each other, the horizontal distance between the first hollow positioning plate 401 and the second hollow positioning plate 402 can be adjusted, and the lithium battery can be installed between the first hollow positioning plate 401 and the second hollow positioning plate 402 or the lithium battery can be removed from between the first hollow positioning plate 401 and the second hollow positioning plate 402.

[0047] In this embodiment of the present invention, a vertical fixing seat 412 is disposed on one side of the first end sealing plate 405 and the second end sealing plate 406, and the two vertical fixing seats 412 are arranged in opposite directions (eg Fig. 9 As shown in the figure, the elastic element 413 fixed on the first end sealing plate 405 is connected to the corresponding vertical fixing seat 412, and the elastic element 413 fixed on the second end sealing plate 406 is connected to the corresponding vertical fixing seat 412. In the initial state, each elastic element 413 is in a natural state, the first hollow positioning plate 401 and the second hollow positioning plate 402 are close to each other and are in a coaxial position, and two limiting guide plates 414 are fixedly arranged on the surface of the vertical fixing seat 412. The first end sealing plate 405 and the second end sealing plate 406 are both slidably matched between the two limiting guide plates 414. The setting of the limiting guide plates 414 can ensure the horizontal movement of the first end sealing plate 405 and the second end sealing plate 406;

[0048] The first hollow positioning plate 401 is fitted with a first driven plate 415 on its outer wall, and the first driven plate 415 is fixedly connected to the first end sealing plate 405 by an axial linkage rod 416. The first driven plate 415 is fixedly connected to the temperature monitoring plate 404, so that the movement of the first hollow positioning plate 401 can drive the first driven plate 415 to move synchronously, and under the action of the axial linkage rod 416, the first end sealing plate 405 is driven to move synchronously and compress the corresponding elastic element 413. The second hollow positioning plate 402 is fitted with a second driven plate 417 on its outer wall, and the second driven plate 417 is fixedly connected to the second end sealing plate 406 by an axial linkage rod 416, so that the movement of the second hollow positioning plate 402 can drive the second driven plate 417 to move synchronously, and under the action of the axial linkage rod 416, the second The two end sealing plates 406 move synchronously and compress the corresponding elastic elements 413. The compression of the elastic elements 413 can be achieved when the first hollow positioning plate 401 and the second hollow positioning plate 402 move away from each other. The arc guide cavity 407 is connected to the first hollow positioning plate 401 and the second hollow positioning plate 402 on one side thereof through the flow channel 418. The external air enters the arc guide cavity 407 on the first end sealing plate 405 through the hollow connecting portion 409, and then enters the first hollow positioning plate 401 and the second hollow positioning plate 402 through the flow channel 418 in the arc guide cavity 407, and finally enters the arc guide cavity 407 on the second end sealing plate 406 through the flow channel 418 at the second end sealing plate 406, and then flows out from the hollow connecting portion 409 on the second end sealing plate 406.

[0049] In this embodiment of the present invention, the battery carrying assembly 2 includes a battery carrying plate 201 arranged inside the power connection box 1, the battery carrying plate 201 is connected to the power connection box 1 by fasteners, the first end sealing plate 405, the second end sealing plate 406 and the unfolding movable seat 410 are all slidably arranged on the top of the battery carrying plate 201, the vertical fixing seat 412 is fixedly arranged on the top of the battery carrying plate 201, and a battery mounting base 419 is fixedly arranged on the top of the battery carrying plate 201, and the first hollow positioning plate 401 and the second hollow positioning plate 402 are symmetrical. Arranged on both sides of the battery mounting base 419, after the lithium battery is installed on the battery mounting base 419, the first hollow positioning plate 401 and the second hollow positioning plate 402 are controlled to approach each other until they are attached to the surface of the lithium battery. At this time, the first end sealing plate 405 and the second end sealing plate 406 are both attached to the end surfaces of the first hollow positioning plate 401 and the second hollow positioning plate 402 at the corresponding positions, thereby completing the position limitation of the lithium battery placed on the battery mounting base 419 (that is, completing the installation and fixation of the lithium battery inside the power supply connection box 1).

[0050] In this embodiment of the present invention, the flow guide assembly 5 further includes a second flow guide portion 503, a third flow guide portion 504 and a fourth flow guide portion 505. The first flow guide portion 501, the second flow guide portion 503, the third flow guide portion 504 and the fourth flow guide portion 505 are all clearance-fitted inside the corresponding hollow connecting portion 409. The upper end of the first flow guide pipe 502 is fixedly arranged on the fourth flow guide portion 505 and the two are connected. The second flow guide portion 503 and the third flow guide portion 504 are connected by the second flow guide pipe 506. The first guide portion 501, the first guide tube 502 and the second guide tube 506 are all fixed on the inner wall of the power connection box 1 through the connecting piece 507. Through the above-mentioned specific structural design, the external air enters the arc guide cavity 407 on the first end sealing plate 405 through the hollow connecting portion 409 on the first end sealing plate 405 after being filtered, and then enters the first hollow positioning plate 401 and the second hollow positioning plate 402 through the flow channel 418 in the arc guide cavity 407. Then, the air flows through the flow passage 418 at the second end sealing plate 406 into the arc-shaped flow guide cavity 407 on the second end sealing plate 406, and then flows out from the hollow connection portion 409 on the second end sealing plate 406 to the second flow guide pipe 506. Then, the air flow in the second flow guide pipe 506 enters the arc-shaped flow guide cavity 407 on the second end sealing plate 406 through the hollow connection portion 409 above, and then flows through the flow passage 418 at the position of the second end sealing plate 406 into the first hollow connection portion 409 above. The air flows through the positioning plate 401 and the second hollow positioning plate 402, and then enters the arc-shaped guide cavity 407 on the upper first end sealing plate 405 through the flow passage 418 at the upper first end sealing plate 405, and then flows out from the hollow connecting portion 409 on the upper first end sealing plate 405 to the first guide pipe 502, and finally flows from the first guide pipe 502 into the first guide portion 501 on the next guide component 5, thereby realizing the flow of air between each guide component 5.

[0051] Specific embodiment 2, on the basis of specific embodiment 2, a battery installation control shaft 202 is rotatably provided on the top of the battery supporting plate 201, and the battery installation control shaft 202 is threadedly matched with each internal threaded tube 411 sleeved thereon. By rotating the battery installation control shaft 202, under the threaded cooperation of the battery installation control shaft 202 and the internal threaded tube 411, the two unfolded movable seats 410 on each battery positioning component 4 can be synchronously moved toward each other, thereby simultaneously adjusting the horizontal spacing between the first hollow positioning plate 401 and the second hollow positioning plate 402 on each battery positioning component 4, a transmission wheel 203 is fixedly installed on the side surface of the battery installation control shaft 202, and a transmission port 204 corresponding to the position of the transmission wheel 203 is opened on the top of the battery supporting plate 201.

[0052] In this embodiment of the present invention, the present invention also includes a linkage control component 6; wherein the linkage control component 6 includes a linkage control rod 601 rotatably arranged on the top of the upper battery carrier plate 201, and a meshing transmission part 602 that is slidably matched with the corresponding transmission port 204 is threaded on the linkage control rod 601, and a transmission gear 603 fixed on the corresponding battery installation control shaft 202 is meshed on one side of the meshing transmission part 602, and the upper and lower transmission wheels 203 are connected by a linkage belt 604, and the linkage belt 604 is arranged between the upper and lower transmission ports 204; when the linkage control rod 601 is controlled to rotate forward, the meshing transmission part 602 is driven to move upward, and the meshing transmission part 602 is used to drive the rotation of the transmission gear 603, and the linkage control rod 601 is controlled to rotate forward. The upper and lower battery installation control shafts 202 are driven to rotate synchronously under the action of the driving belt 604. Under the thread cooperation of the battery installation control shaft 202 and the internal threaded tube 411, the two unfolded movable seats 410 on each battery positioning assembly 4 can be moved away from each other. In this process, the movement of the first hollow positioning plate 401 drives the first driven plate 415 to move synchronously, and under the action of the axial linkage rod 416, the first end sealing plate 405 is driven to move synchronously and compress the corresponding elastic element 413. At the same time, the movement of the second hollow positioning plate 402 drives the second driven plate 417 to move synchronously, and under the action of the axial linkage rod 416, the second end sealing plate 406 is driven to move synchronously and compress the corresponding elastic element 413 until each battery is positioned. The first hollow positioning plate 401 and the second hollow positioning plate 402 on the battery positioning assembly 4 are unfolded. After each lithium battery is placed on the corresponding battery mounting base 419, the meshing transmission part 602 is driven to gradually reset downward by rotating the linkage control rod 601 in the opposite direction. Under the synchronous reverse rotation of the upper and lower battery mounting control shafts 202, the first hollow positioning plate 401 and the second hollow positioning plate 402 on each battery positioning assembly 4 are made close to each other until the first hollow positioning plate 401 and the second hollow positioning plate 402 are attached to the surface of the lithium battery. At this time, the meshing transmission part 602 moves downward to complete the reset, and each lithium battery is installed and fixed on the battery carrier plate 201. Then, the wires (distribution power lines) are connected along the wiring port 408. Connect to the terminal at the end of the lithium battery and keep the wire (branch power line) in the corresponding wiring port 408. After the battery carrier plate 201 carrying each lithium battery is installed into the power connection box 1, the first guide part 501 between the two adjacent guide components 5 is connected to the first guide tube 502 (that is, the first guide part 501 and the first guide tube 502 are fitted front to back), the airflow inlet pipe 101 is connected to the corresponding first guide part 501 (that is, the airflow inlet pipe 101 and the first guide part 501 are fitted front to back), and the airflow exhaust pipe 102 is connected to the corresponding first guide tube 502 (that is, the airflow exhaust pipe 102 and the first guide tube 502 are fitted front to back). In this way, the installation of the lithium battery in the power connection box 1 is completed.

[0053] In this embodiment of the present invention, a first partition plate 103 and a second partition plate 104 are fixedly arranged in the equipment cavity at the bottom of the power connection box 1, and the equipment cavity is divided into an air flow conveying chamber 105, an air inlet chamber 106 and an exhaust chamber 107 by the first partition plate 103 and the second partition plate 104. An air flow conveyor 108 (for example, a micro fan, which is connected to the main power supply line in the power connection box 1 through a branch power line) is installed inside the air flow conveying chamber 105, and the air flow inlet pipe 101 is connected to the air flow conveyor 108. At the air outlet, an air flow conveying pipe 109 is connected to the air inlet of the air flow conveyor 108, a hollow guide box 110 is fixedly arranged in the equipment cavity at the bottom of the power supply connection box 1, and an air flow input port 111 connected to its inner cavity is provided on the inner wall of the hollow guide box 110, and a one-way valve 112 is installed on the air flow external exhaust pipe 102. By installing the one-way valve 112 on the air flow external exhaust pipe 102, external dust can be effectively prevented from entering the power supply connection box 1 along the air flow external exhaust pipe 102 during the period when no heat dissipation is performed.

[0054] When the temperature sensor on the temperature monitoring board 404 detects that the surface temperature of a certain lithium battery is close to the set temperature threshold, the control unit installed on the power connection box 1 receives the temperature signal and starts the airflow conveyor 108, and the external air enters the first guide part 501 located below the first battery positioning mechanism 3 along the airflow inlet pipe 101 through the airflow conveyor 108, and is discharged from the corresponding first guide pipe 502 to the first guide part 501 on the second battery positioning mechanism 3 after passing through the guide component 5 on the first battery positioning mechanism 3, and is discharged from the corresponding first guide pipe 502 to the first guide part 501 on the third battery positioning mechanism 3 after passing through the guide component 5 on the second battery positioning mechanism 3, and is finally discharged from the airflow outer exhaust pipe 102 to the outside of the power connection box 1 according to the airflow flow trajectory, so as to achieve synchronous air cooling and heat dissipation treatment of each lithium battery, until the monitored surface temperature of the lithium battery is reduced to a lower range (that is, the normal temperature range set by the control unit), at which time the control unit receives the temperature signal and controls the airflow conveyor 108 to stop running.

[0055] Specific embodiment three, on the basis of specific embodiment one and embodiment two, the present invention also includes an air intake dust filter assembly 7 installed in the equipment cavity at the bottom of the power supply connection box 1; wherein the air intake dust filter assembly 7 includes an air intake dust filter ring 701 rotatably arranged between the first partition plate 103 and the second partition plate 104, the hollow guide box 110 is fitted on the outer wall of the air intake dust filter ring 701 and the two are coaxial, a chamber partition 702 is fixedly arranged inside the air intake dust filter ring 701, the chamber partition 702 divides the inner cavity of the air intake dust filter ring 701 into a first chamber 703 and a second chamber 704, two groups of first screen structures 705 and second screen structures 706 are respectively opened on the outer wall of the air intake dust filter ring 701, the first chamber 703 and the second chamber 704 are respectively connected to the corresponding first screen structure 705 and second screen structure 706, and the first chamber 705 and the second screen structure 706 in the initial state are connected to the first chamber 705 and the second screen structure 706 in the initial state. 03 is located on the inner side of the air inlet bin 106, the second chamber 704 is located on the inner side of the air exhaust bin 107, and the second screen structure 706 at the first chamber 703 is aligned with the air flow input port 111 on the hollow guide box 110. At this time, starting the air flow conveyor 108 can allow the external air to enter the first chamber 703 after being filtered by the first screen structure 705 at the first chamber 703. The filtered air passes through the second screen structure 706 at the first chamber 703 and enters the air flow input port 111, and then enters the air flow conveyor 108 through the air flow conveying pipe 109 and is output from the air flow inlet pipe 101 to the first guide part 501 located below the first battery positioning mechanism 3. By filtering the air, a large amount of external air can be effectively prevented from entering the power supply connection box 1 to corrode the power supply components, thereby ensuring the normal operation of each power supply component inside the power supply connection box 1.

[0056] In this embodiment of the present invention, a chamber switching gear 707 is fixedly provided on the top of the chamber partition 702, a switching control rack 708 meshing with the chamber switching gear 707 is slidably provided inside the power connection box 1, and the output shaft of the switching control motor 709 installed inside the air inlet bin 106 is connected to a power gear 710 meshing with the switching control rack 708. A backwashing air pipe 711 connected to the inner cavity of the air inlet dust filter ring 701 is fixedly installed inside the power connection box 1. In the initial state, the second chamber 704 is located below the backwashing air pipe 711, and the second chamber 704 is connected to the backwashing air pipe 711, and the backwashing air pipe 711 is connected to the corresponding first guide pipe 502. An electromagnetic opening and closing valve 712 is installed on the backwashing air pipe 711, and the electromagnetic opening and closing valve 712 and the switching control motor 709 are connected to the main power supply line in the power connection box 1 through a branch power supply line.

[0057] After the entire power battery pack has been working for a period of time, the control unit controls the electromagnetic on-off valve 712 to open and starts the switching control motor 709, and controls the power gear 710 to rotate through the switching control motor 709, and drives the chamber switching gear 707 to rotate synchronously under the action of the switching control rack 708, thereby driving the air intake dust filter ring 701 fixed on the chamber partition 702 to rotate 180° counterclockwise (such as Fig.14 and Fig.15 As shown), at this time, the first chamber 703 rotates to the inner side of the exhaust bin 107 and is aligned with the electromagnetic opening and closing valve 712, and the second screen structure 706 at the second chamber 704 is aligned with the air flow input port 111 on the hollow guide box 110. Under the action of the air flow conveyor 108, the external air passes through the first screen structure 705 on the second chamber 704 and enters the second chamber 704, and then enters the air flow input port 111 through the second screen structure 706 at the second chamber 704, and then enters the air flow conveyor through the air flow conveying pipe 109. The air flow in the first chamber 703 is discharged from the first screen structure 705 and the second screen structure 706 at the same time, thereby realizing the cooling of the first screen structure 705 and the second screen structure 706 at the position of the first chamber 703. 6 (i.e., blowing off and separating the dust adhering to the first screen structure 705 and the second screen structure 706), after the backwashing reaches the set time, the control unit controls the electromagnetic on-off valve 712 and the switching control motor 709 to close again, and then the air cooling and heat dissipation control of each lithium battery is carried out normally according to the set program. When the entire power battery pack works for a period of time again, the control unit controls the electromagnetic on-off valve 712 to open again and starts the switching control motor 709, and controls the power gear 710 to rotate in the opposite direction through the switching control motor 709, so that the switching control rack 708 moves in the opposite direction and resets. At this time, the first chamber 703 and the second chamber 704 are both returned to the initial position. After completing the backwashing of the first screen structure 705 and the second screen structure 706 at the position of the second chamber 704 (i.e., blowing off and separating the dust adhering to the first screen structure 705 and the second screen structure 706), the control unit controls the electromagnetic on-off valve 712 and the switching control motor 709 to close again, and then the air cooling and heat dissipation control of each lithium battery is carried out normally according to the set program.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A power supply connection structure based on a power battery pack, comprising a power supply connection box (1); characterized in that: An airflow inlet pipe (101) is installed inside the power supply connection box (1), and an airflow outlet pipe (102) fixed on the power supply connection box (1) is arranged on the side opposite to the airflow inlet pipe (101); A battery carrying assembly (2) is installed inside the power supply connection box (1), and a plurality of battery positioning mechanisms (3) are installed in a linear array between the battery carrying assemblies (2); Wherein, the battery positioning mechanism (3) comprises: A battery positioning assembly (4), wherein the battery positioning assembly (4) is arranged in a one-to-one correspondence with the battery supporting assembly (2), the battery positioning assembly (4) is mounted on the top of the corresponding battery supporting assembly (2), the battery positioning assembly (4) comprises a first hollow positioning plate (401) and a second hollow positioning plate (402) which are symmetrically arranged, and the inner walls of the first hollow positioning plate (401) and the second hollow positioning plate (402) are both provided with heat dissipation channels (403) which are connected to their inner cavities; and a flow guide component (5), the flow guide component (5) being fixedly mounted inside the power supply connection box (1), the first hollow positioning plate (401) and the second hollow positioning plate (402) both being connected to the flow guide component (5), the flow guide component (5) comprising a first flow guide portion (501) and a first flow guide pipe (502), the first flow guide portion (501) between two adjacent flow guide components (5) being connected to the first flow guide pipe (502), the air flow inlet pipe (101) being connected to the corresponding first flow guide portion (501), and the air flow outlet pipe (102) being connected to the corresponding first flow guide pipe (502); A temperature monitoring plate (404) is arranged above the battery supporting assembly (2); a temperature monitoring port is arranged between the first hollow positioning plate (401) and the second hollow positioning plate (402); the temperature monitoring plate (404) is located inside the corresponding temperature monitoring port; a temperature sensor is installed at the bottom of the temperature monitoring plate (404); and by controlling the flow of air between each of the first hollow positioning plates (401) and the second hollow positioning plates (402), the heat on the surface of the lithium battery is dissipated along with the air flow by utilizing the heat dissipation duct (403); The battery positioning assembly (4) further comprises a first end sealing plate (405) and a second end sealing plate (406) which are symmetrically arranged, wherein an arc-shaped flow guiding cavity (407) is provided inside the first end sealing plate (405) and the second end sealing plate (406), and a wiring port (408) is provided on the surface of the first end sealing plate (405) and the second end sealing plate (406), wherein the first hollow positioning plate (401) and the second hollow positioning plate (402) are both fitted with the first end sealing plate (405) and the second end sealing plate (406) on both sides thereof, and a hollow connecting portion (409) which is in communication with the arc-shaped flow guiding cavity (407) is fixedly provided on the surface of the first end sealing plate (405) and the second end sealing plate (406), and an unfolding movable seat (410) is fixedly provided on the peripheral side surface of the first hollow positioning plate (401) and the second hollow positioning plate (402), and an internal threaded tube (411) is fixedly provided in the mounting hole of the unfolding movable seat (410); The flow guide assembly (5) further comprises a second flow guide portion (503), a third flow guide portion (504) and a fourth flow guide portion (505); the first flow guide portion (501), the second flow guide portion (503), the third flow guide portion (504) and the fourth flow guide portion (505) are all loosely fitted inside the corresponding hollow connecting portion (409); the upper end portion of the first flow guide tube (502) is fixedly arranged on the fourth flow guide portion (505) and the two are connected; the second flow guide portion (503) and the third flow guide portion (504) are connected via a second flow guide tube (506); the first flow guide portion (501), the first flow guide tube (502) and the second flow guide tube (506) are all fixed to the inner wall of the power supply connection box (1) via a connecting piece (507); The battery carrying assembly (2) comprises a battery carrying plate (201) arranged inside the power supply connection box (1); a battery installation control shaft (202) is rotatably arranged on the top of the battery carrying plate (201); the battery installation control shaft (202) and each internal threaded tube (411) sleeved thereon are threadedly matched; a transmission wheel (203) is fixedly mounted on the side surface of the battery installation control shaft (202); and a transmission opening (204) corresponding to the position of the transmission wheel (203) is opened on the top of the battery carrying plate (201); The power supply connection structure further comprises a linkage control assembly (6); wherein the linkage control assembly (6) comprises a linkage control rod (601) rotatably arranged on the top of the battery carrier plate (201) above, the linkage control rod (601) being threadedly engaged with a meshing transmission part (602) that is slidably engaged with a corresponding transmission port (204), one side of the meshing transmission part (602) being meshed with a transmission gear (603) fixed on the corresponding battery installation control shaft (202), the upper and lower transmission wheels (203) being connected via a linkage belt (604), and the linkage belt (604) being arranged between the upper and lower transmission ports (204).

2. A power supply connection structure based on a power battery pack according to claim 1, characterized in that: A vertical fixing seat (412) is provided on one side of the first end sealing plate (405) and the second end sealing plate (406), and the two vertical fixing seats (412) are arranged in opposite directions. The elastic element (413) fixed on the first end sealing plate (405) is connected to the corresponding vertical fixing seat (412), and the elastic element (413) fixed on the second end sealing plate (406) is connected to the corresponding vertical fixing seat (412). Two limiting guide plates (414) are fixedly provided on the surface of the vertical fixing seat (412), and the first end sealing plate (405) and the second end sealing plate (406) are both slidably fitted between the two limiting guide plates (414); A first driven plate (415) is fitted on the outer wall of the first hollow positioning plate (401), and the first driven plate (415) is fixedly connected to the first end sealing plate (405) via an axial linkage rod (416). The first driven plate (415) is fixedly connected to the temperature monitoring plate (404). A second driven plate (417) is fitted on the outer wall of the second hollow positioning plate (402), and the second driven plate (417) is fixedly connected to the second end sealing plate (406) via an axial linkage rod (416). The arc-shaped flow guide cavity (407) is connected to the first hollow positioning plate (401) and the second hollow positioning plate (402) on one side thereof via a flow passage (418).

3. A power supply connection structure based on a power battery pack according to claim 2, characterized in that: The battery support plate (201) is connected to the power supply connection box (1) via fasteners; the first end sealing plate (405), the second end sealing plate (406) and the unfolding movable seat (410) are all slidably arranged on the top of the battery support plate (201); the vertical fixing seat (412) is fixedly arranged on the top of the battery support plate (201); a battery mounting base (419) is fixedly arranged on the top of the battery support plate (201); and the first hollow positioning plate (401) and the second hollow positioning plate (402) are symmetrically arranged on both sides of the battery mounting base (419).

4. A power supply connection structure based on a power battery pack according to claim 3, characterized in that: A first partition plate (103) and a second partition plate (104) are fixedly arranged in the equipment cavity at the bottom of the power supply connection box (1), and the equipment cavity is divided into an air flow conveying chamber (105), an air inlet chamber (106) and an air exhaust chamber (107) by the first partition plate (103) and the second partition plate (104). An air flow conveyor (108) is installed inside the air flow conveying chamber (105), the air flow inlet pipe (101) is connected to the air outlet of the air flow conveyor (108), and the air flow conveyor (108) is connected to the air inlet of the air flow conveyor (108). A hollow flow guide box (110) is fixedly arranged in the equipment cavity at the bottom of the power supply connection box (1), and an air flow inlet port (111) communicating with the inner cavity of the hollow flow guide box (110) is provided on the inner wall of the hollow flow guide box (110), and a one-way valve (112) is installed on the air flow exhaust pipe (102).

5. A power supply connection structure based on a power battery pack according to claim 4, characterized in that: It also includes an air intake dust filter assembly (7) installed in the equipment cavity at the bottom of the power supply connection box (1); wherein the air intake dust filter assembly (7) includes an air intake dust filter ring (701) rotatably arranged between the first partition plate (103) and the second partition plate (104); the hollow flow guide box (110) is arranged on the outer wall of the air intake dust filter ring (701) with the two being coaxial; a chamber partition (702) is fixedly arranged inside the air intake dust filter ring (701); the chamber partition (702) divides the inner cavity of the air intake dust filter ring (701) into a first chamber (703) and a second chamber (704); two groups of first screen structures (705) and second screen structures (706) are respectively provided on the outer wall of the air intake dust filter ring (701); the first chamber (703) and the second chamber (704) are respectively connected to the corresponding first screen structure (705) and second screen structure (706).

6. A power supply connection structure based on a power battery pack according to claim 5, characterized in that: A chamber switching gear (707) is fixedly arranged on the top of the chamber partition (702); a switching control rack (708) meshing with the chamber switching gear (707) is slidably arranged inside the power connection box (1); an output shaft of a switching control motor (709) installed inside the air inlet bin (106) is connected to a power gear (710) meshing with the switching control rack (708); a backwashing air pipe (711) connected to the inner cavity of the air inlet dust filter ring (701) is fixedly installed inside the power connection box (1); the backwashing air pipe (711) is connected to the corresponding first guide pipe (502); and an electromagnetic opening and closing valve (712) is installed on the backwashing air pipe (711).

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