Battery system control circuit board

Abstract

The invention, which relates to the technical field of the circuit board, discloses a battery system control circuit board comprising a circuit board body and a heat dissipation assembly. The heat dissipation assembly comprises a mounting plate, a lower-layer heat dissipation unit, a heat absorption wind scooper plate, a fin heat dissipation unit, an upper-layer heat dissipation unit and heat absorption fins; a heat absorption wind scooper plate covers the top surface of the mounting plate, a cooling fin is arranged at the bottom of the circuit board body, and the top surface of the heat absorption wind scooper plate is in contact with the cooling fin; a heat absorption fin is arranged below the circuit board body, and the outer side wall of the heat absorption wind scooper plate is in contact with the heat absorption fin; the lower-layer heat dissipation unit is used for blowing air between the mounting plate and the heat absorption wind scooper plate, the fin heat dissipation unit is used for blowing air to the heat absorption fins, and the upper-layer heat dissipation unit is used for blowing air to the upper side of the circuit board body. The circuit board has the advantages that the heat dissipation effect is improved, and the temperature of air around the upper side and the lower side of the circuit board body can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit boards, and particularly to a battery system control circuit board. Background Art

[0002] A circuit board is also known as a printed wiring board or a printed circuit board. The circuit board is made of polyimide or polyester film as the base material, and has reliability and excellent flexibility. The industrial-grade energy storage string-type linkage control circuit board combines a flexible circuit board and a rigid circuit board through processes such as lamination, and combines them together according to specific process requirements, so as to form a circuit board with FPC characteristics and PCB characteristics. This kind of circuit board occupies an important position in the intelligent connection scenario of linkage control.

[0003] In industrial-grade energy storage devices, most of their control circuit boards are installed in series. Usually, the back of a single circuit board is connected by soldering. During the installation of the circuit board, the soldering surface is the installation surface and needs to be installed on some electronic control mechanical equipment. The electronic control mechanical equipment is prone to vibration during operation, which causes friction between the soldering surface of the circuit board and the mounting bracket, resulting in wear of the solder joints and open circuits in the corresponding circuit connectors, thus causing the entire industrial-grade energy storage device to malfunction; in addition, most of the circuit boards in industrial-grade energy storage devices are high-power boards, which generate a large amount of heat during use. If the heat is not dissipated in time, the circuit board will overheat and cannot operate normally, which will further affect the effect of its linkage control.

[0004] The patent document with the publication number CN216721655U discloses a circuit board based on linkage control, which realizes the protection and air guiding of the bottom end of the circuit board body by setting a rubber column board and a buffer component. The existing linkage control circuit boards have the following disadvantages: 1. It can only dissipate heat from the lower part of the circuit board body, and can only passively utilize the surrounding cold air masses, so the heat dissipation effect is poor; 2. It can only buffer when the circuit board body is vertically squeezed, and cannot buffer when the circuit board body is impacted from both sides; 3. It is difficult to ensure the stability of the compression direction when the rubber column board is vertically squeezed, and the shock absorption effect is average. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to improve the heat dissipation effect of the linkage control circuit board.

[0006] The present invention solves the above technical problems through the following technical means: A battery system control circuit board, comprising a circuit board body and a heat dissipation component; The heat dissipation component includes a mounting plate, a lower layer heat dissipation unit, a heat absorption air guide cover plate, a fin heat dissipation unit, an upper layer heat dissipation unit and heat absorption fins; The top surface of the mounting plate is covered with a heat absorption air guide cover plate, a heat sink is arranged at the bottom of the circuit board body, and the top surface of the heat absorption air guide cover plate is in contact with the heat sink; Heat absorption fins are arranged below the circuit board body, and the outer side wall of the heat absorption air guide cover plate is in contact with the heat absorption fins; The lower layer heat dissipation unit is used to blow air between the mounting plate and the heat absorption air guide cover plate, the fin heat dissipation unit is used to blow air to the heat absorption fins, and the upper layer heat dissipation unit is used to blow air to the upper side of the circuit board body.

[0007] The heat dissipation component can actively blow air to dissipate heat from both the upper and lower sides of the circuit board body and the heat absorption fins simultaneously. Moreover, the heat absorption fins themselves will also absorb part of the heat below the circuit board body and transfer it outward, improving the heat dissipation effect, effectively reducing the temperature of the air around both the upper and lower sides of the circuit board body, and thus solving the problems such as unstable operation of the circuit board and unobvious linkage control effect caused by serious heat generation and untimely heat dissipation of the circuit board during the operation of traditional industrial-grade energy storage devices.

[0008] As an optimized technical solution, the lower layer heat dissipation unit, the fin heat dissipation unit and the upper layer heat dissipation unit are driven by the same motor.

[0009] The equipment cost is low, which is beneficial to control.

[0010] As an optimized technical solution, the lower layer heat dissipation unit includes a front baffle, a motor, a drive shaft, a belt pulley, an annular belt and lower layer air blowing blades; The front baffle is fixedly connected to the mounting plate, and a plurality of drive shafts are rotatably connected to the front baffle from left to right. The drive shaft in the middle is connected to the output shaft of the motor; A belt pulley and lower layer air blowing blades are installed on each drive shaft, and each belt pulley is connected by an annular belt. The lower layer air blowing blades are aligned with the gap between the mounting plate and the heat absorption air guide cover plate.

[0011] The motor can drive the drive shaft in the middle to rotate. Under the action of the annular belt, all the belt pulleys will rotate, thereby driving all the drive shafts to rotate. The drive shafts drive the air blowing blades to rotate and generate an air flow that blows backward from the gap between the mounting plate and the heat absorption air guide cover plate, so as to take away the heat absorbed by the heat absorption air guide cover plate.

[0012] As an optimized technical solution, the fin heat dissipation unit includes a horizontal shaft, a pressing plate, and a air-blowing mechanism; the horizontal shaft is rotatably arranged between the mounting plate and the heat-absorbing air guide cover plate, and a plurality of pressing plates are fixedly connected to the horizontal shaft from front to back; two groups of air-blowing mechanisms are symmetrically arranged on the left and right sides of the horizontal shaft, and each group of air-blowing mechanisms includes a plurality of air-blowing units corresponding to the pressing plates one by one. The air-blowing units blow the air flow between the mounting plate and the heat-absorbing air guide cover plate to the heat-absorbing fins by means of left-right reciprocating motion.

[0013] When the horizontal shaft rotates, it drives the pressing plate to rotate. By intermittently pressing the air-blowing units with the pressing plate, the air-blowing units blow the air flow between the mounting plate and the heat-absorbing air guide cover plate to the heat-absorbing fins by means of left-right reciprocating motion. At the same time, a plurality of air-blowing units can be driven to work, with high working efficiency and good heat dissipation effect.

[0014] As an optimized technical solution, the air-blowing unit includes a one-way intake pipe, an air-blowing cylinder, a pressing rod, a piston, a return spring, and a one-way outlet pipe; the air-blowing cylinder is fixedly connected to the mounting plate, and a piston is slidably arranged inside the air-blowing cylinder; the pressing rod slidably penetrates through the air-blowing cylinder, the inner end of the pressing rod is fixedly connected to the piston, and the outer end of the pressing rod is in contact with the pressing plate rotated to a certain position; a return spring is sleeved on the pressing rod, and both ends of the return spring are fixedly connected to the air-blowing cylinder and the piston respectively; a air-blowing cavity is formed between the piston and the air-blowing cylinder, and a one-way intake pipe and a one-way outlet pipe communicating with the air-blowing cavity are arranged on the air-blowing cylinder. The one-way intake pipe extends into the gap between the mounting plate and the heat-absorbing air guide cover plate, and the one-way outlet pipe extends to directly below the heat-absorbing fins.

[0015] By intermittently pressing the pressing rod with the pressing plate, under the action of the return spring, the pressing rod will drive the piston to perform left-right reciprocating motion inside the air-blowing cylinder, so that the air flow blows to the heat-absorbing fins after passing through the one-way intake pipe, the air-blowing cavity, and the one-way outlet pipe.

[0016] As an optimized technical solution, the upper-layer heat dissipation unit includes a mounting box, upper-layer blower blades, a vertical shaft, and a driven bevel gear; the rotating shafts of the upper-layer blower blades and the vertical shaft are both rotatably installed in the mounting box, the bevel gear fixedly connected to the vertical shaft meshes with the bevel gear fixedly connected to the rotating shaft of the upper-layer blower blades, and the upper-layer blower blades are aligned with the upper side of the circuit board body; a driven bevel gear is fixedly connected to the vertical shaft, and the fin heat dissipation unit is provided with a driving bevel gear, and the driven bevel gear meshes with the driving bevel gear.

[0017] The transmission is carried out by using the bevel gear meshing structure, with simple structure and reliable operation.

[0018] As an optimized technical solution, fixed components are fixedly connected to the left and right sides of the circuit board body respectively. Horizontally damping components are symmetrically installed on the fixed components on the left and right sides. Vertically damping components and bottom mounting components are symmetrically arranged on the left and right sides below the circuit board body. The fixed components, vertically damping components and bottom mounting components on each side are connected in sequence from top to bottom.

[0019] The vertically damping components can buffer when the circuit board body is squeezed in the vertical direction, and the horizontally damping components can buffer when the circuit board body is impacted on both sides, avoiding the problem that the circuit board in traditional industrial energy storage devices is prone to open circuit and cannot operate normally. Moreover, the way that the fixed components, vertically damping components and bottom mounting components are connected in sequence from top to bottom can also realize the suspended installation of the circuit board body, providing an installation space for the heat dissipation components.

[0020] As an optimized technical solution, the fixed component includes a fixed slot and a fixing bolt. The side of the circuit board body is inserted into the fixed slot, and the circuit board body and the fixed slot are fixedly connected by the fixing bolt.

[0021] The contact area between the solder running surface on the lower side of the circuit board and the fixed component is reduced. During the operation of the industrial energy storage device, even if excessive vibration occurs, it can avoid the loosening of the wire connectors at the solder points on the solder running surface, thus further avoiding the problem that the circuit board in traditional industrial energy storage devices is prone to open circuit and cannot operate normally.

[0022] As an optimized technical solution, the horizontally damping component includes a cross bar, an elastic head, a damping spring and a collision prevention head. A plurality of cross bars are fixedly penetrated through the fixed component from front to back. Elastic heads are slidably sleeved at both ends of the cross bar. Damping springs are sleeved on both sides of the cross bar respectively. The two ends of the inner damping spring are respectively fixedly connected to the inner elastic head and the inner side of the fixed component, and the two ends of the outer damping spring are respectively fixedly connected to the outer elastic head and the outer side of the fixed component. A collision prevention head is sleeved outside the outer elastic head.

[0023] When installing the circuit board body, the inner elastic head will be squeezed by the circuit board body towards the inner side of the fixed component, so that the inner damping spring is gradually compressed, thus adapting to the installation of circuit board bodies with different widths within a certain range. When the circuit board body is impacted on both sides, the impact force acts on the collision prevention head, squeezing the outer elastic head towards the outer side of the fixed component. At this time, the outer damping spring plays a role in buffering and damping, so as to maintain the stability of the circuit board body.

[0024] As an optimized technical solution, the vertical shock-absorbing component includes a first connecting plate, mounting grooves, elastic strips, guide rods, and support springs; the upper and lower groups of mounting grooves are arranged with their openings facing each other, and elastic strips are respectively and fittingly mounted in each mounting groove; the first connecting plate is fixedly connected to the fixing component and the upper mounting groove respectively, and the lower mounting groove is fixedly connected to the bottom mounting component; a plurality of guide holes are formed in the bottom surface of the upper elastic strip from front to back, and a plurality of guide rods are fixedly connected to the top surface of the lower elastic strip in one-to-one correspondence with the guide holes, and the guide rods are slidably inserted into the corresponding guide holes; a support spring is sleeved on the outer periphery of each guide rod, the upper end of the support spring is inserted into the guide hole, and both ends of the support spring are fixedly connected to the upper and lower groups of elastic strips respectively.

[0025] When the circuit board body is squeezed in the vertical direction, the squeezing force will cause the upper elastic strip to approach the lower elastic strip. At this time, the support spring will be compressed and play a certain buffering role; the sliding of the guide rod along the guide hole can ensure that the support spring is compressed in the vertical direction, the compression direction is stable, the shock-absorbing effect is good, effectively reducing the vibration received by the circuit board body, and thus avoiding the wear of the solder joints on the solder side, ensuring the stability of the circuit board body during use.

[0026] As an optimized technical solution, the left and right sides of the mounting plate are respectively slidably inserted into the left and right bottom mounting components, and the left and right outer side walls of the heat absorption air guide cover plate are respectively in sliding contact with the ends of the left and right heat absorption fins.

[0027] The way of sliding and inserting the mounting plate into the bottom mounting component is convenient for installation. Description of the Drawings

[0028] Figure 1 It is the first-angle axonometric schematic diagram of the battery system control circuit board according to the embodiment of the present invention.

[0029] Figure 2 It is the second-angle axonometric schematic diagram of the battery system control circuit board according to the embodiment of the present invention.

[0030] Figure 3 It is the sectional structure schematic diagram of the transverse shock-absorbing component and the vertical shock-absorbing component according to the embodiment of the present invention.

[0031] Figure 4 It is the axonometric schematic diagram of removing part of the heat dissipation component according to the embodiment of the present invention.

[0032] Figure 5 It is the axonometric schematic diagram of removing the upper heat dissipation unit, the vertical plate, and the heat absorption fins of the heat dissipation component according to the embodiment of the present invention.

[0033] Figure 6 It is the connection structure schematic diagram of the mounting plate and the lower heat dissipation unit according to the embodiment of the present invention.

[0034] Figure 7 This is a schematic cross-sectional view of the fin heat dissipation unit according to an embodiment of the present invention.

[0035] Figure 8 This is a schematic connection structure diagram of the protective cover and the upper heat dissipation unit according to an embodiment of the present invention. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] As Figure 1 、 Figure 2 As shown in [figures not provided], an embodiment of the present invention discloses a battery system control circuit board, which includes a circuit board body 1, a protective cover 2, a fixing component 3, a horizontal shock absorption component 4, a vertical shock absorption component 5, a bottom mounting component 6, and a heat dissipation component 7.

[0038] Fixing components 3 are respectively fixedly connected to the left and right sides of the circuit board body 1. The fixing component 3 includes a fixing groove 31 and a fixing bolt 32. The side of the circuit board body 1 is inserted into the fixing groove 31, and the fixing groove 31 is a U-shaped plate. Mounting holes are respectively formed at the four corners of the circuit board body 1, through holes are formed on the front and rear sides of the fixing groove 31, and the circuit board body 1 and the fixing groove 31 are fixedly connected by fixing bolts 32 passing through the mounting holes and the through holes. Horizontal shock absorption components 4 are symmetrically mounted on the left and right fixing components 3. Vertical shock absorption components 5 and bottom mounting components 6 are symmetrically arranged on the left and right sides below the circuit board body 1. Each side of the fixing component 3, the vertical shock absorption component 5, and the bottom mounting component 6 are connected in sequence from top to bottom, and the heat dissipation component 7 is mounted between the left and right bottom mounting components. The protective cover 2 covers the upper part of the circuit board body 1, the lower end of the protective cover 2 is fixedly connected to the top surface of the fixing groove 31, and a plurality of heat dissipation holes 21 are uniformly formed on the protective cover 2.

[0039] As Figure 3As shown in the figure, the lateral shock-absorbing component 4 includes a cross bar 41, an elastic head 42, a shock-absorbing spring 43 and a collision-proof head 44. A plurality of cross bars 41 are fixedly penetrated through the side wall of the fixed groove 31 at equal intervals from front to back. Elastic heads 42 made of rubber are slidably sleeved at both ends of the cross bar 41. Shock-absorbing springs 43 are sleeved on both sides of the cross bar 41. The two ends of the inner shock-absorbing spring 43 are respectively fixedly connected to the inner elastic head 42 and the inner side wall of the fixed groove 31. The two ends of the outer shock-absorbing spring 43 are respectively fixedly connected to the outer elastic head 42 and the outer side wall of the fixed groove 31. A collision-proof head 44 made of non-metallic soft material is sleeved outside the outer elastic head 42. The collision-proof head 44 is hemispherical and its hemispherical surface faces outward.

[0040] During specific operation, an operator horizontally inserts the circuit board body 1 into the fixed groove 31 from the front side of the fixed groove 31, aligns the mounting holes on the circuit board body 1 with the through holes on the fixed groove 31, and then fixedly connects the circuit board body 1 and the fixed groove 31 with a fixing bolt 32. During this process, the inner elastic head 42 will be extruded by the circuit board body 1 towards the inner side wall of the fixed groove 31, causing the inner shock-absorbing spring 43 to be gradually compressed, so as to adapt to the installation of circuit board bodies 1 with different widths within a certain range. When the circuit board body 1 is impacted from both sides, the impact force acts on the collision-proof head 44, extruding the outer elastic head 42 towards the outer side wall of the fixed groove 31. At this time, the outer shock-absorbing spring 43 plays a role in buffering and shock absorption, thereby maintaining the stability of the circuit board body 1.

[0041] The vertical shock-absorbing component 5 includes a first connecting plate 51, a mounting groove 52, an elastic strip 53, a guide rod 54 and a support spring 55. The mounting groove 52 is a trapezoidal groove body that gradually widens from the opening to the bottom of the groove. The upper and lower groups of mounting grooves 52 are arranged with their openings facing each other. Elastic strips 53 made of rubber are respectively installed in each mounting groove 52 in a matching manner. The first connecting plate 51 is L-shaped. Its upper end is fixedly connected to the bottom surface of the fixed groove 31, and its lower end is fixedly connected to the top surface of the upper mounting groove 52. The bottom surface of the lower mounting groove 52 is fixedly connected to the bottom mounting component 6. A plurality of guide holes are arranged at equal intervals from front to back on the bottom surface of the upper elastic strip 53. A plurality of guide rods 54 are fixedly connected to the lower elastic strip 53 corresponding to the guide holes one by one. The guide rods 54 are slidably inserted into the corresponding guide holes. Support springs 55 are sleeved on the outer peripheries of the guide rods 54 respectively. The upper ends of the support springs 55 are inserted into the guide holes, and the two ends of the support springs 55 are respectively fixedly connected to the upper and lower groups of elastic strips 53.

[0042] During actual operation, during the use of the circuit board body 1, the protective cover 2 can play a certain protective role for the circuit board body 1. When the circuit board body 1 is squeezed in the vertical direction, the squeezing force will cause the upper and lower groups of elastic strips 53 to approach each other. At this time, the support spring 55 will be compressed and play a certain buffering role. The guiding rod 54 is used to ensure that the support spring 55 is compressed in the vertical direction, with a stable compression direction and good shock absorption effect, effectively reducing the vibration received by the circuit board body 1, thereby avoiding wear of the solder joints on the solder side of the circuit board body 1 and ensuring the stability of the circuit board body 1 during use.

[0043] As Figure 4 shown, the bottom mounting assembly 6 includes a plug-in chute 61, a bottom foot protrusion 62, and a bottom plate 63; the bottom plate 63 is L-shaped, and its upper end is fixedly connected to the lower mounting groove 52; plug-in chutes 61 for mounting the heat dissipation assembly 7 are respectively provided at the adjacent ends of the left and right bottom plates 63; bottom foot protrusions 62 are provided at the front and rear ends of the bottom surfaces of the left and right bottom plates 63, and the bottom foot protrusions 62 play a supporting role for the bottom plate 63 to ensure that there is a certain installation space below the circuit board body 1.

[0044] As Figure 1 、 Figure 2 and Figures 5 to 8 shown, the heat dissipation assembly 7 includes a mounting plate 71, a lower layer heat dissipation unit 72, a heat absorption air guide cover plate 73, a fin heat dissipation unit 74, an upper layer heat dissipation unit 75, a vertical plate 76, and a heat absorption fin 77.

[0045] The left and right sides of the mounting plate 71 are respectively slidably inserted into the left and right plug-in chutes 61; the top surface of the mounting plate 71 is fixedly covered with a heat absorption air guide cover plate 73, and a heat sink 11 is provided at the bottom of the circuit board body 1, and the top surface of the heat absorption air guide cover plate 73 is in contact with the lower end of the heat sink 11; a plurality of vertical plates 76 are fixedly connected at equal intervals from front to back at the inner bottom of the left and right bottom plates 63, and a corrugated heat absorption fin 77 is fixedly connected to the upper end of each vertical plate 76. The heat absorption fin 77 is located below the circuit board body 1, and the left and right outer side walls of the heat absorption air guide cover plate 73 are respectively in sliding contact with the ends of the left and right heat absorption fins 77.

[0046] A lower layer heat dissipation unit 72 is provided at the front end of the mounting plate 71, and the lower layer heat dissipation unit 72 is used to blow air between the mounting plate 71 and the heat absorption air guide cover plate 73; a fin heat dissipation unit 74 is provided from the middle position to the rear end of the mounting plate 71, and the fin heat dissipation unit 74 is used to blow air to the heat absorption fins 77; an upper layer heat dissipation unit 75 is provided at the rear of the fin heat dissipation unit 74, and the upper layer heat dissipation unit 75 is used to blow air to the upper side of the circuit board body 1.

[0047] The lower heat dissipation unit 72 includes a front baffle 721, a motor 722, a drive shaft 723, a pulley 724, an endless belt 725, lower air blowing vanes 726 and a handle 727; the front baffle 721 is fixedly connected to the middle position at the front end of the mounting plate 71, and a plurality of drive shafts 723 are rotatably connected to the front baffle 721 at equal intervals from left to right. The front end of the drive shaft 723 in the middle is connected to the output shaft of the motor 722 through a coupling, and the motor 722 is fixedly connected to the front side of the front baffle 721 through a machine base; a pulley 724 and lower air blowing vanes 726 are installed on each drive shaft 723, and the pulleys 724 are connected by an endless belt 725. The lower air blowing vanes 756 are aligned with the gap between the mounting plate 71 and the heat absorption air guiding cover plate 73; handles 727 are symmetrically installed on the left and right sides of the front side wall of the front baffle 721. Holding the handle 727 can conveniently and quickly insert or pull out the mounting plate 71 from the insertion chute 61.

[0048] During specific operation, start the motor 722. The motor 722 drives the drive shaft 723 in the middle to rotate. Under the action of the endless belt 725, all the pulleys 724 will rotate, thereby driving all the drive shafts 723 to rotate. The drive shafts 723 drive the air blowing vanes 726 to rotate and generate an air flow that blows backward from the gap between the mounting plate 71 and the heat absorption air guiding cover plate 73, thereby taking away the heat absorbed by the heat absorption air guiding cover plate 73.

[0049] The fin heat dissipation unit 74 includes a rear baffle 741, a horizontal shaft 742, a pressing plate 743, a driving bevel gear 744 and an air blowing mechanism; the rear baffle 741 is fixedly connected to the middle position at the rear end of the mounting plate 71. The horizontal shaft 742 is rotatably arranged between the mounting plate 71 and the heat absorption air guiding cover plate 73. The rear end of the horizontal shaft 742 is rotatably connected to the rear baffle 741, and the front end of the horizontal shaft 742 is fixedly connected to the rear end of the drive shaft 723 in the middle; a driving bevel gear 744 is fixedly connected to the rear side of the horizontal shaft 742; a plurality of pressing plates 743 are fixedly connected to the horizontal shaft 742 at equal intervals from front to back. Two groups of air blowing mechanisms are symmetrically arranged on the left and right sides of the horizontal shaft 742. Each group of air blowing mechanisms includes a plurality of air blowing units corresponding to the pressing plates 743 one by one. The air blowing unit blows the air flow between the mounting plate 71 and the heat absorption air guiding cover plate 73 to the heat absorption fins 61 by means of left and right reciprocating motion.

[0050] The air-blowing unit includes an air-blowing cylinder 745, a pressing rod 746, a piston 747, a return spring 748, a one-way air outlet pipe 749 and a one-way air inlet pipe 7410; the bottom of the air-blowing cylinder 745 is fixedly connected to the top surface of the mounting plate 71, and the piston 747 is slidably arranged inside the air-blowing cylinder 745; the pressing rod 746 slidably penetrates through one end of the air-blowing cylinder 745 close to the pressing plate 743, the inner end of the pressing rod 746 is fixedly connected to the piston 747, and the outer end of the pressing rod 746 is in contact with the pressing plate 743 rotated to a certain position; the pressing rod 746 is a ball-head rod, and its outer end is a ball-head end; a part of the pressing rod 746 located inside the air-blowing cylinder 745 is sleeved with a return spring 748, and both ends of the return spring 748 are fixedly connected to the air-blowing cylinder 745 and the piston 747 respectively; a air-blowing cavity is formed between one end of the piston 747 away from the pressing plate 743 and the air-blowing cylinder 745, and the air-blowing cylinder 745 is provided with a one-way air inlet pipe 7410 and a one-way air outlet pipe 749 communicating with the air-blowing cavity. The one-way air inlet pipe 7410 extends into the gap between the mounting plate 71 and the heat-absorbing air guide cover plate 73, and the one-way air outlet pipe 749 penetrates through the side wall of the heat-absorbing air guide cover plate 73 and extends to directly below the heat-absorbing fins 77.

[0051] During specific operation, the driving shaft 723 in the middle will also drive the cross shaft 742 to rotate during rotation, thereby driving the pressing plate 743 to rotate. By intermittently pressing the pressing rod 746 with the pressing plate 743, under the action of the return spring 748, the pressing rod 746 will drive the piston 747 to reciprocate left and right inside the air-blowing cylinder 745, so that the air flows through the one-way air inlet pipe 744, the air-blowing cavity and the one-way air outlet pipe 749 and then blows onto the heat-absorbing fins 77, and the heat-absorbing fins 77 themselves will also absorb part of the heat below the circuit board body 1 and transfer it outward, thereby further improving the heat dissipation effect.

[0052] The upper-layer heat dissipation unit 75 includes a second connecting plate 751, a fixing rod 752, an installation box 753, upper-layer blower blades 754, a vertical shaft 755 and a driven bevel gear 756; the second connecting plate 751, the fixing rod 752 and the installation box 753 are fixedly connected in sequence from top to bottom. The second connecting plate 751 is L-shaped, and its front end is fixedly connected to the middle position at the rear end of the protective cover 2; the rotating shafts of the upper-layer blower blades 754 and the vertical shaft 755 are both rotatably installed in the installation box 753. The bevel gear fixedly connected to the vertical shaft 755 meshes with the bevel gear fixedly connected to the rotating shaft of the upper-layer blower blades 754 inside the installation box 753, and the upper-layer blower blades 754 are aligned with the upper side of the circuit board body 1; a driven bevel gear 756 is fixedly connected to the lower end of the vertical shaft 755, and the driven bevel gear 756 meshes with the driving bevel gear 744.

[0053] During specific operation, after the circuit board body 1 is installed, the mounting plate 71 is inserted into the insertion chute 61 manually from the front side of the component 6 at the bottom, so that the driving bevel gear 744 meshes with the driven bevel gear 756. Then, the motor 722 is started to drive the horizontal shaft 742 to rotate. During the rotation of the horizontal shaft 742, the driving bevel gear 744 will also rotate. Under the meshing action of the driven bevel gear 756, the vertical shaft 752 will also rotate. Then, under the meshing action of the bevel gears inside the mounting box 753, the upper blower blades 754 are driven to rotate and generate an air flow that blows forward from the gap between the circuit board body 1 and the protective cover 2, so as to dissipate heat from the upper side of the circuit board body 1. The lower heat dissipation unit 72, the fin heat dissipation unit 74 and the upper heat dissipation unit 75 are all driven by the motor 722, with low equipment cost and being conducive to control.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery system control circuit board, characterized in that: The heat dissipation device comprises a heat dissipation device and a heat dissipation device, wherein the heat dissipation device comprises a mounting plate, a lower heat dissipation unit, a heat absorbing air guide cover plate, a fin heat dissipation unit, an upper heat dissipation unit and heat absorbing fins; a heat absorbing air guide cover plate is provided on the top surface of the mounting plate, a heat dissipation fin is provided on the bottom of the circuit board body, and the top surface of the heat absorbing air guide cover plate is in contact with the heat dissipation fin; heat absorbing fins are provided below the circuit board body, and the outer side wall of the heat absorbing air guide cover plate is in contact with the heat absorbing fins; the lower heat dissipation unit is used for blowing air between the mounting plate and the heat absorbing air guide cover plate, the fin heat dissipation unit is used for blowing air to the heat absorbing fins, and the upper heat dissipation unit is used for blowing air to the upper side of the circuit board body.

2. The battery system control circuit board according to claim 1, characterized in that: The lower cooling unit, the fin cooling unit and the upper cooling unit are driven by the same motor.

3. The battery system control circuit board according to claim 1, characterized in that: The lower heat dissipation unit includes a front baffle, a motor, a drive shaft, a transmission pulley, an annular belt and lower blast blades; the front baffle is fixedly connected to the mounting plate, and a plurality of drive shafts are rotatably connected to the front baffle from left to right, and the drive shaft in the middle is connected to the output shaft of the motor; a transmission pulley and a lower blast blade are installed on each drive shaft, and each transmission pulley is connected by an annular belt, and the lower blast blades are aligned with the gap between the mounting plate and the heat absorbing and air guiding cover plate.

4. The battery system control circuit board according to claim 1, characterized in that: The fin cooling unit includes a transverse axis, an extrusion plate and an air blowing mechanism; the transverse axis is rotatably arranged between the mounting plate and the heat absorbing air guide cover plate, and a plurality of extrusion plates are fixedly connected to the transverse axis from front to back; two groups of air blowing mechanisms are symmetrically arranged on the left and right sides of the transverse axis, and each group of air blowing mechanisms includes a plurality of air blowing units corresponding to the extrusion plates one by one, and the air blowing units use left and right reciprocating motion to blow the airflow between the mounting plate and the heat absorbing air guide cover plate to the heat absorbing fins.

5. The battery system control circuit board according to claim 1, characterized in that: The upper heat dissipation unit includes an installation box, an upper blast blade, a vertical shaft and a driven bevel gear; the rotating shaft of the upper blast blade and the vertical shaft are both rotatably installed on the installation box, the bevel gear fixedly connected on the vertical shaft is meshed with the bevel gear fixedly connected on the rotating shaft of the upper blast blade, and the upper blast blade is aligned with the upper side of the circuit board body; the driven bevel gear is fixedly connected to the vertical shaft, and the fin heat dissipation unit is provided with a driving bevel gear, and the driven bevel gear is meshed with the driving bevel gear.

6. The battery system control circuit board according to claim 1, characterized in that: The left and right sides of the circuit board body are respectively fixedly connected with fixing components, and lateral shock absorbing components are symmetrically installed on the fixing components on the left and right sides. Vertical shock absorbing components and bottom mounting components are symmetrically arranged on the left and right sides below the circuit board body. The fixing components, vertical shock absorbing components and bottom mounting components on each side are connected in sequence from top to bottom.

7. The battery system control circuit board according to claim 6, characterized in that: The fixing assembly comprises a fixing slot and a fixing bolt. The side edge of the circuit board body is inserted into the fixing slot. The circuit board body is fixedly connected to the fixing slot by the fixing bolt.

8. The battery system control circuit board according to claim 6, characterized in that: The lateral shock-absorbing assembly includes a cross bar, an elastic head, a shock-absorbing spring and an anti-collision head; a plurality of cross bars are fixedly provided on the fixed assembly from front to back, and elastic heads are slidably sleeved on both ends of the cross bars; shock-absorbing springs are sleeved on both sides of the cross bar, and the two ends of the inner shock-absorbing spring are respectively fixedly connected to the inner elastic head and the inner side of the fixed assembly, and the two ends of the outer shock-absorbing spring are respectively fixedly connected to the outer elastic head and the outer side of the fixed assembly, and an anti-collision head is sleeved on the outside of the outer elastic head.

9. The battery system control circuit board according to claim 6, characterized in that: The vertical shock-absorbing assembly includes a first connecting plate, a mounting groove, an elastic strip, a guide rod and a support spring; the upper and lower groups of mounting groove openings are arranged opposite to each other, and an elastic strip is respectively installed in each mounting groove; the first connecting plate is respectively fixedly connected to the fixing assembly and the upper mounting groove, and the lower mounting groove is fixedly connected to the bottom mounting assembly; a plurality of guide holes are provided on the bottom surface of the upper elastic strip from front to back, and a plurality of guide rods are fixedly connected to the guide holes on the top surface of the lower elastic strip in one-to-one correspondence, and the guide rods are slidably inserted in the corresponding guide holes; a support spring is respectively sleeved on the outer periphery of each guide rod, the upper end of the support spring is inserted in the guide hole, and the two ends of the support spring are respectively and fixedly connected to the upper and lower groups of elastic strips.

10. The battery system control circuit board according to claim 6, characterized in that: The left and right sides of the mounting plate are respectively slidably inserted into the left and right bottom mounting components, and the left and right outer side walls of the heat absorbing and air guiding cover plate are respectively in sliding contact with the ends of the left and right heat absorbing fins.

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