Power battery high voltage acquisition control system
By setting up control mechanisms and ventilation ducts in the power battery high-voltage acquisition and control system, the negative pressure fan and ventilation frame are used to achieve efficient heat dissipation, which solves the problem of heat accumulation during the acquisition process, improves the system stability and acquisition accuracy, and enhances sealing and long-term heat dissipation effect.
Patent Information
- Application Number
- CN202411932524.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-03-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing power battery high-voltage acquisition and control system will generate a large amount of heat when collecting battery high-voltage data, affecting the system stability and acquisition accuracy, and may lead to degradation of battery performance and safety hazards.
A high-voltage acquisition and control system for power batteries is designed. By setting up a control mechanism and ventilation duct, the air is extracted from the negative pressure fan to form a negative pressure state, and external air is introduced for heat dissipation, and multiple airflows are dispersed through the ventilation frame and the deflector to improve the heat dissipation effect.
It effectively reduces the temperature inside the detection box, improves the heat dissipation effect of the overall device, and prevents dust from entering through the dust-proof filter plate, enhancing sealing and long-term heat dissipation ability.
Smart Images
Figure CN119730183A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power battery high voltage collection, and in particular to a power battery high voltage collection control system. Background Art
[0002] With the global emphasis on environmental protection and sustainable energy utilization, electric vehicles have developed rapidly. As the core component of electric vehicles, the performance monitoring and control of power batteries is crucial. During the operation of electric vehicles, it is necessary to accurately collect high-voltage information of power batteries, such as voltage and current. For example, for a pure electric vehicle with a range of 500 kilometers, its power battery pack may be composed of multiple battery modules, and the voltage range may be from hundreds of volts to thousands of volts. Accurately collecting these high-voltage data can provide key information for the vehicle's energy management system to ensure safe driving and efficient energy utilization of the vehicle.
[0003] However, in the existing technology, most battery high-voltage acquisition control systems will generate a large amount of heat when collecting data from the battery. If the heat is not dissipated in time, it will not only affect the stability and acquisition accuracy of the system, but may also cause the battery performance to deteriorate, and even cause safety hazards in extreme cases. Summary of the invention
[0004] The purpose of the present invention is to provide a power battery high voltage acquisition control system to solve the problems raised in the above background technology.
[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a power battery high voltage collection and control system, comprising a detection box and a top cover, wherein a plurality of bolts are threadedly connected between the detection box and the top cover, and a control mechanism is arranged on the detection box; The control mechanism includes a control module fixedly connected to the left side of the detection box, the top surface of the control module is fixedly connected with a wire, the inner wall of the detection box is fixedly connected with a power battery pack, the positive and negative poles of the power battery pack are fixedly connected with a collection head, and several of the collection heads are fixedly connected to the wire, the inner wall of the top cover is fixedly connected with a ventilation duct, the left end and the right end of the ventilation duct extend to the left side and the right side of the top cover respectively, the bottom surface of the ventilation duct is connected to a ventilation frame, the ventilation frame is fixedly connected to the ventilation duct, and the left side of the ventilation duct is fixedly connected with a negative pressure fan.
[0006] Furthermore, the inner wall of the ventilation frame is fixedly rotatably connected to a plurality of rotating rods, the outer walls of the plurality of rotating rods are fixedly connected to guide plates, and connecting lines are fixedly connected between the plurality of guide plates.
[0007] Furthermore, a dustproof filter plate is fixedly connected to the inner wall of the ventilation duct, and the dustproof filter plate is located on the left side of the ventilation duct. A fixing plate is fixedly connected to the inner wall of the ventilation duct, and the fixing plate is located on the right side of the dustproof filter plate.
[0008] Furthermore, two sealing cylinders are fixedly connected to the right side of the fixed plate, two sliding rods are slidably penetrated through the two fixed plates, and the left ends of the two sliding rods are fixedly connected to a connecting rod 1.
[0009] Furthermore, the outer wall of the connecting rod 1 is fixedly connected to two connecting rods 2, and one end of the two connecting rods 2 away from the connecting rod 1 is fixedly connected to a sealing plate, and the two sealing plates are respectively slidably connected to the inner walls of the two sealing cylinders.
[0010] Furthermore, the right ends of the two sliding rods are fixedly connected with cushion blocks, and the outer walls of the two sliding rods are wound with spring 2.
[0011] Furthermore, one end of the second spring is fixedly connected to the cushion block, and the other end of the second spring is fixedly connected to the fixing plate.
[0012] Furthermore, two fixed blocks are fixedly connected to the bottom surface of the ventilation duct, and the inner walls of the two fixed blocks are rotatably connected to a second rotating rod, and the rear ends of the two second rotating rods are respectively rotated and extended to the rear sides of the two fixed blocks.
[0013] Furthermore, the rear ends of the two rotating rods 2 are fixedly connected to the hinge rod, the rear sides of the two hinge rods are rotatably connected to the hinge block 1, the left and right sides of the ventilation frame are rotatably connected to the hinge block 2, and a spring 1 is fixedly connected between the two hinge blocks 2 and the two hinge blocks 1 respectively.
[0014] Furthermore, outer walls of the two rotating rods are fixedly connected with rotating wheels, the connecting line is sleeved between the two rotating wheels, and the connecting line is in contact with outer walls of the two rotating wheels.
[0015] The present invention has the following beneficial effects: (1) The present invention is provided with a control mechanism. During the process of collecting power battery packs, a large amount of heat may be generated. At this time, the negative pressure fan can be driven to extract the air inside the ventilation duct, so that a negative pressure state is formed inside the top cover and the ventilation duct. At this time, the external air exerts pressure on the sealing plate, so that the external air can flow into the ventilation duct through the gap between the sealing plate and the sealing cylinder. At this time, the spring 2 is compressed. After the air flows into the ventilation duct, it drives the air at the top of the top cover to flow out, and then the heat at the bottom of the top cover is discharged with the air, dissipating the heat inside the detection box, thereby improving the heat dissipation effect of the overall device. In addition, the dust filter plate can play a role in isolating dust during heat dissipation, preventing dust in the external air from flowing into the interior of the detection box.
[0016] (2) The present invention is provided with a second spring. After the negative pressure fan is turned off, the compressed second spring is released, thereby allowing the sealing plate to slide into the interior of the sealing cylinder, thereby preventing the outside air from being isolated and preventing dust in the outside air from flowing into the interior of the top cover along with the air, thereby sealing the interior of the device and improving the overall sealing effect.
[0017] (3) The present invention is provided with a ventilation frame. During the continuous operation of the negative pressure fan, the air flow between the multiple guide plates can be driven. In cooperation with the ventilation frame, the air inside the detection box can be divided into multiple air flows for discharge, thereby avoiding poor heat dissipation effect caused by turbulent air flow when the hot air is discharged. When the negative pressure is strong, the multiple guide plates can be turned over. With the cooperation of the fixed block, the second rotating rod and the rotating wheel, the connecting line can connect the multiple guide plates in series to achieve synchronous turning, guide the strong airflow, prevent the airflow from being too strong and causing turbulence, and ensure the long-term effective heat dissipation effect of the overall device. The hinged rod, the hinged block 1, the hinged block 2 and the spring 1 cooperate with each other, so that when the negative pressure value is low, it can be reset.
[0018] 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
[0019] 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.
[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the top cover of the present invention; Figure 3 It is a schematic diagram of the structure of the detection box of the present invention; Figure 4 It is a structural schematic diagram of the ventilation duct of the present invention; Figure 5 It is a structural schematic diagram of the fixing plate of the present invention; Figure 6 It is a structural schematic diagram of the ventilation frame of the present invention; Figure 7 It is a structural schematic diagram of the sealing cylinder of the present invention; Figure 8 for Figure 6 A schematic diagram of the enlarged structure at A in the middle; In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. detection box; 2. control mechanism; 21. top cover; 22. bolt; 23. control module; 231. wire; 24. power battery pack; 25. collection head; 26. ventilation duct; 261. ventilation frame; 262. rotating rod; 263. guide plate; 2631. connecting line; 264. fixing block; 265. rotating rod 2; 2651. rotating wheel; 266. hinged rod; 267. hinged block 1; 268. hinged block 2; 269. spring 1; 27. negative pressure fan; 28. dust filter plate; 29. fixing plate; 291. sealing cylinder; 292. sliding rod; 293. connecting rod 1; 294. connecting rod 2; 295. sealing plate; 296. cushion block; 297. spring 2. DETAILED DESCRIPTION
[0021] 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.
[0022] See also Figure 1-Figure 8 As shown, the present invention is a power battery high voltage collection and control system, comprising a detection box 1 and a top cover 21, a plurality of bolts 22 are threadedly connected between the detection box 1 and the top cover 21, and a control mechanism 2 is arranged on the detection box 1; The control mechanism 2 includes a control module 23 fixedly connected to the left side of the detection box 1, the top surface of the control module 23 is fixedly connected to a wire 231, the inner wall of the detection box 1 is fixedly connected to a power battery pack 24, the positive and negative poles of the power battery pack 24 are fixedly connected to a collection head 25, and a plurality of collection heads 25 are fixedly connected to the wire 231, the inner wall of the top cover 21 is fixedly connected to a ventilation duct 26, the left end and the right end of the ventilation duct 26 extend to the left and right exteriors of the top cover 21 respectively, the bottom surface of the ventilation duct 26 is connected to a ventilation frame 261, the ventilation frame 261 is fixedly connected to the ventilation duct 26, the left side of the ventilation duct 26 is fixedly connected to a negative pressure fan 27, and the inner wall of the ventilation frame 261 is fixedly rotatably connected to a plurality of rotating rods 262, The outer walls of several rotating rods 262 are fixedly connected with guide plates 263, and connecting lines 2631 are fixedly connected between several guide plates 263. By setting up a control mechanism 2, the negative pressure fan 27 can be driven to extract the air inside the ventilation duct 26, so that a negative pressure state is formed inside the top cover 21 and the ventilation duct 26. At this time, the external air exerts pressure on the sealing plate 295, so that the external air can flow into the ventilation duct 26 through the gap between the sealing plate 295 and the sealing cylinder 291. At this time, the spring 297 is compressed. After the air flows into the ventilation duct 26, it drives the air at the top of the top cover 21 to flow out, and then the heat at the bottom of the top cover 21 is discharged with the air, so as to dissipate the heat inside the detection box 1 and improve the heat dissipation effect of the overall device. The inner wall of the ventilation duct 26 is fixedly connected with a dust filter plate 28, and the dust filter plate 28 is located on the left side of the ventilation duct 26. The inner wall of the ventilation duct 26 is fixedly connected with a fixed plate 29, and the fixed plate 29 is located on the right side of the dust filter plate 28. Two sealing cylinders 291 are fixedly connected to the right side of the fixed plate 29. Two sliding rods 292 slide through the two fixed plates 29. The left ends of the two sliding rods 292 are fixedly connected with connecting rods 1 293. The outer wall of the connecting rod 1 293 is fixedly connected with two connecting rods 294. The ends of the two connecting rods 294 away from the connecting rod 1 293 are fixedly connected with sealing plates 295. The two sealing plates 295 are respectively slidably connected to the inner walls of the two sealing cylinders 291, the right ends of the two sliding rods 292 are fixedly connected with a cushion block 296, and the outer walls of the two sliding rods 292 are wound with a spring 297, one end of the spring 297 is fixedly connected to the cushion block 296, and the other end of the spring 297 is fixedly connected to the fixed plate 29. After the negative pressure fan 27 is turned off, the compressed spring 297 is released, so that the sealing plate 295 slides into the inside of the sealing cylinder 291 to prevent the isolation of external air and prevent the dust in the external air from flowing into the inside of the top cover 21 with the air, so as to seal the inside of the device and improve the overall sealing effect; The bottom surface of the ventilation duct 26 is fixedly connected with two fixed blocks 264, the inner walls of the two fixed blocks 264 are rotatably connected with a rotating rod 265, the rear ends of the two rotating rods 265 are respectively rotatably extended to the rear sides of the two fixed blocks 264, the rear ends of the two rotating rods 265 are fixedly connected with a hinge rod 266, the rear sides of the two hinge rods 266 are rotatably connected with a hinge block 1 267, the left and right sides of the ventilation frame 261 are rotatably connected with a hinge block 268, a spring 1 269 is respectively fixedly connected between the two hinge blocks 268 and the two hinge blocks 1 267, the outer walls of the two rotating rods 265 are fixedly connected with a rotating wheel 2651, the connecting line 2631 is sleeved between the two rotating wheels 2651, the connecting line 2631 is in contact with the outer walls of the two rotating wheels 2651, and the ventilation frame 261 is provided. During the continuous operation of the negative pressure fan 27, the air flow between the multiple guide plates 263 can be driven, and the ventilation frame 261 can be used to divide the air inside the detection box 1 into multiple air flows for discharge, so as to avoid poor heat dissipation due to turbulent air flow when the hot air is discharged. When the negative pressure is strong, the multiple guide plates 263 can be driven to flip over. With the cooperation of the fixed block 264, the second rotating rod 265 and the rotating wheel 2651, the connecting line 2631 can connect the multiple guide plates 263 in series to achieve synchronous flipping, guide the strong airflow, prevent the airflow from being too strong and causing turbulence, and ensure the long-term and effective heat dissipation effect of the overall device. The hinged rod 266, the hinged block 1 267, the hinged block 268 and the spring 1 269 cooperate with each other, so that when the negative pressure value is low, the multiple guide plates 263 can be reset.
[0023] The negative pressure fan 27 is based on the principle of air pressure difference. It draws out indoor air to create a negative pressure state indoors, thereby causing outdoor air to flow naturally into the room. The negative pressure fan 27 comes into being as a key device for achieving negative pressure ventilation.
[0024] The acquisition head 25 is a key component for obtaining battery information. The voltage acquisition head can accurately touch the positive and negative poles of the battery or the single-cell connection points to obtain voltage signals. The current acquisition head is connected in series with the charge and discharge circuit to collect current according to electromagnetic induction or Ohm's law. Some acquisition heads are equipped with simple conditioning circuits to preliminarily amplify and filter weak signals.
[0025] Wire 231 is the key link for signal and current transmission. On the one hand, it transmits the voltage and current signals obtained by the acquisition head to the control module. To ensure accuracy, shielded wires are often used to reduce electromagnetic interference. On the other hand, when the control module controls the charging and discharging of the battery, the wires form a pathway and can also block the current when the circuit cut-off command is issued.
[0026] The control module 23 is responsible for receiving the signal transmitted by the wire, and the internal circuit performs analog-to-digital conversion, filtering, data fusion and other processing to calculate key parameters such as the remaining battery capacity SOC and the health status SOH; secondly, it executes the control strategy according to the processing results. Once the voltage exceeds the limit, the current is too large, and other abnormalities are detected, the relay is immediately controlled to cut off the circuit, and the charging and discharging current can be adjusted as needed. The three perform their respective duties and cooperate with each other to form a complete circuit, so as to achieve effective collection and control of the battery pack.
[0027] When in use, by providing the control mechanism 2, a large amount of heat may be generated in the process of collecting the power battery pack 24. At this time, the negative pressure fan 27 can be driven to extract the air inside the ventilation duct 26, so that a negative pressure state is formed inside the top cover 21 and the ventilation duct 26. At this time, the external air exerts pressure on the sealing plate 295, so that the external air can flow into the ventilation duct 26 through the gap between the sealing plate 295 and the sealing cylinder 291. At this time, the spring 297 is compressed. After the air flows into the ventilation duct 26, it drives the air at the top of the top cover 21 to flow out, and then the heat at the bottom of the top cover 21 is discharged with the air, and the inside of the detection box 1 is dissipated to improve the heat dissipation effect of the overall device. The dust filter plate 28 can play a role in isolating dust during heat dissipation to prevent dust in the external air from flowing into the inside of the detection box 1; After the negative pressure fan 27 is turned off, the compressed spring 297 is released, so that the sealing plate 295 slides into the sealing cylinder 291 to prevent the external air from being cut off and to prevent the dust in the external air from flowing into the top cover 21 with the air, thereby sealing the inside of the device and improving the overall sealing effect; By providing a ventilation frame 261, during the continuous operation of the negative pressure fan 27, the air flow between the multiple guide plates 263 can be driven. In conjunction with the ventilation frame 261, the air inside the detection box 1 can be divided into multiple air flows for discharge, thereby avoiding poor heat dissipation due to turbulent air flow when the hot air is discharged. When the negative pressure is strong, the multiple guide plates 263 can be driven to flip. With the cooperation of the fixed block 264, the second rotating rod 265 and the rotating wheel 2651, the connecting line 2631 can connect the multiple guide plates 263 in series to achieve synchronous flipping, guide the strong airflow, prevent the airflow from being too strong and causing turbulence, and ensure the long-term and effective heat dissipation effect of the overall device. The hinged rod 266, the hinged block 1 267, the hinged block 268 and the spring 1 269 cooperate with each other, so that when the negative pressure value is low, the multiple guide plates 263 can be reset.
[0028] 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 battery high voltage collection and control system, comprising a detection box and a top cover, wherein the detection box and the top cover are threadedly connected with a plurality of bolts, characterized in that: The detection box is provided with a control mechanism; The control mechanism includes a control module fixedly connected to the left side of the detection box, the top surface of the control module is fixedly connected with a wire, the inner wall of the detection box is fixedly connected with a power battery pack, the positive and negative poles of the power battery pack are fixedly connected with a collection head, and several of the collection heads are fixedly connected to the wire, the inner wall of the top cover is fixedly connected with a ventilation duct, the left end and the right end of the ventilation duct extend to the left side and the right side of the top cover respectively, the bottom surface of the ventilation duct is connected to a ventilation frame, the ventilation frame is fixedly connected to the ventilation duct, and the left side of the ventilation duct is fixedly connected with a negative pressure fan.
2. A power battery high voltage acquisition control system according to claim 1, characterized in that: The inner wall of the ventilation frame is fixedly rotatably connected with a plurality of rotating rods, the outer walls of the plurality of rotating rods are fixedly connected with guide plates, and connecting lines are fixedly connected between the plurality of guide plates.
3. A power battery high voltage acquisition control system according to claim 2, characterized in that: The inner wall of the ventilation duct is fixedly connected with a dustproof filter plate, and the dustproof filter plate is located on the left side of the ventilation duct. The inner wall of the ventilation duct is fixedly connected with a fixing plate, and the fixing plate is located on the right side of the dustproof filter plate.
4. A power battery high voltage acquisition control system according to claim 3, characterized in that: The right side of the fixed plate is fixedly connected to two sealing cylinders, and two sliding rods are slidably penetrated through the two fixed plates, and the left ends of the two sliding rods are fixedly connected to a connecting rod 1.
5. A power battery high voltage acquisition control system according to claim 4, characterized in that: The outer wall of the connecting rod 1 is fixedly connected to two connecting rods 2, and one end of the two connecting rods 2 away from the connecting rod 1 is fixedly connected to a sealing plate, and the two sealing plates are respectively slidably connected to the inner walls of the two sealing cylinders.
6. A power battery high voltage acquisition control system according to claim 5, characterized in that: The right ends of the two slide bars are fixedly connected with cushion blocks, and the outer walls of the two slide bars are wound with springs 2.
7. A power battery high voltage acquisition control system according to claim 6, characterized in that: One end of the second spring is fixedly connected to the cushion block, and the other end of the second spring is fixedly connected to the fixing plate.
8. A power battery high voltage acquisition control system according to claim 7, characterized in that: The bottom surface of the ventilation duct is fixedly connected with two fixed blocks, the inner walls of the two fixed blocks are rotatably connected with two rotating rods, and the rear ends of the two rotating rods are respectively rotated and extended to the rear sides of the two fixed blocks.
9. A power battery high voltage acquisition control system according to claim 8, characterized in that: The rear ends of the two rotating rods 2 are fixedly connected with hinge rods, the rear sides of the two hinge rods are rotatably connected with hinge blocks 1, the left and right sides of the ventilation frame are rotatably connected with hinge blocks 2, and springs 1 are fixedly connected between the two hinge blocks 2 and the two hinge blocks 1 respectively.
10. A power battery high voltage acquisition control system according to claim 9, characterized in that: The outer walls of the two rotating rods are fixedly connected with rotating wheels, the connecting line is sleeved between the two rotating wheels, and the connecting line is in contact with the outer walls of the two rotating wheels.