New energy automobile battery pack cooling structure

Abstract

The invention provides a new energy automobile battery pack cooling structure, and relates to the technical field of battery cooling, the new energy automobile battery pack cooling structure comprises a battery pack and a filter assembly, a row of vertical rod sleeves arranged at equal intervals are welded to each of the two long edge sides of the battery pack, and two vertical side rods of a U-shaped protection frame are in penetrating sliding fit with the two vertical rod sleeves at the corresponding positions; tension springs are connected between the top ends of the four vertical side rods on the two outermost U-shaped protection frames and the top end parts of the two long side edges of the battery pack in a hanging manner; a driving mechanism for synchronously driving the two filtering assemblies to vibrate and clean is arranged at the bottom of the battery pack, and the driving mechanism is positioned between the row of U-shaped protective frames and the battery pack. Through two sets of slider-crank mechanisms composed of two transversely-arranged pushing plates, a connecting rod and an I-shaped driving rod, the I-shaped driving rod is pulled and inserted in a reciprocating mode to drive the two filtering assemblies to synchronously slide and vibrate, the two filtering assemblies are cleaned at a time, and the overall cleaning operation efficiency of the two filtering assemblies is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cooling, and in particular to a cooling structure for a battery pack of a new energy vehicle. Background Art

[0002] The cooling structure of new energy vehicle battery packs is crucial to ensuring that the batteries maintain an appropriate operating temperature under various operating conditions. An efficient cooling system not only helps extend battery life but also improves vehicle safety and performance.

[0003] The existing air-cooled cooling structure is respectively provided with filter assemblies on the air inlet and outlet, but the existing cooling structure lacks a mechanism that can synchronously drive the two sets of filter assemblies on the air inlet and outlet to perform vibration cleaning. As a result, during vibration cleaning, the two sets of filter assemblies need to be driven step by step in sequence, which is troublesome and inconvenient to operate and use, and is not conducive to improving the overall cleaning efficiency of the two sets of filter assemblies. Summary of the Invention

[0004] In view of this, the present invention provides a new energy vehicle battery pack cooling structure to solve the problem that during vibration cleaning, two sets of filter assemblies need to be driven step by step in sequence, which is cumbersome and inconvenient to operate and is not conducive to improving the overall cleaning efficiency of the two sets of filter assemblies.

[0005] The technical solution proposed by the present invention is: a new energy vehicle battery pack cooling structure, specifically comprising a battery pack and a filter assembly, wherein two filter assemblies are symmetrically and slidably installed on the two short sides of the battery pack; A crash barrier is slidably installed under the battery pack; the crash barrier includes a U-shaped protective frame and a horizontal connecting rod, the U-shaped protective frames are arranged in a row and are arranged at equal intervals along the length direction of the battery pack, and two horizontal connecting rods are symmetrically welded between the horizontal bottom rods of each two U-shaped protective frames; a row of vertical rod sleeves arranged at equal intervals are welded on both long sides of the battery pack, and the two upright side rods of the U-shaped protective frame are slidably fitted with the two vertical rod sleeves at corresponding positions, and tension springs are hung between the top ends of the four upright side rods on the two outermost U-shaped protective frames and the top ends of the two long sides of the battery pack; a driving mechanism for synchronously driving the two filter assemblies to vibrate and clean is provided at the bottom of the battery pack, and the driving mechanism is located between a row of U-shaped protective frames and the battery pack; Limiting blocks are welded on the inner sides of the bottom ends of the two vertical side bars of the U-shaped protective frame, and the limiting blocks are in contact with the bottom of the battery pack.

[0006] Furthermore, the battery includes a battery protection box, a box cover and a battery. The battery protection box is a rectangular structure with upper and lower openings. The upper and lower openings of the battery protection box are sealed with a box cover of corresponding shape, and the battery is installed inside the battery protection box. The battery pack is hoisted and fixed on the chassis of the new energy vehicle, and a shaft sleeve is welded and hoisted at the middle position of the bottom of the lower box cover in the length direction.

[0007] Furthermore, the driving mechanism includes an I-shaped driving rod, a connecting rod and a transverse push plate. The I-shaped driving rod is slidably mounted on the shaft sleeve and is positioned by a spring push. The transverse push plates are provided at two locations and are symmetrically slidably mounted on the lower box cover on both sides of the shaft sleeve. The tail ends of the two transverse push plates are symmetrically connected to the end of the I-shaped driving rod away from the shaft sleeve by two connecting rods. One end of the I-shaped drive rod away from the connecting rod protrudes from the battery pack and is located below the chassis of the new energy vehicle and extends to the outer edge of the chassis.

[0008] Furthermore, the filter assembly as a whole is composed of two longitudinal support rods symmetrically arranged above and below and three retaining rings welded between the two longitudinal support rods at equal intervals. The inside of the retaining ring is covered with a metal filter mesh, and a horizontally supported T-shaped force rod is welded at the middle position of the bottom of the lower longitudinal support rod.

[0009] Furthermore, one end of the two transverse push plates away from the connecting rod is in contact with the longitudinal rod sections of the two T-shaped force-bearing rods; The vertical reference plane on the longitudinal rod section of the T-shaped force-bearing rod facing the horizontal push plate is coincident with the vertical reference plane on the corresponding short side of the box cover.

[0010] Furthermore, a row of equally spaced and vertically arranged narrow flat cooling tubes is welded through the interior of the battery protection box, and two rows of vertical rod sleeves and the two ends of a row of narrow flat cooling tubes are staggered. A row of narrow flat cooling tubes are spaced apart inside the battery protection box to form a row of long installation slots, and a battery of a corresponding shape is embedded in each of the long installation slots.

[0011] Furthermore, the liquid inlet ends of a row of the narrow flat cooling tubes are all threadedly connected to small electric ball valves, and the row of narrow flat cooling tubes are connected in series to an external vehicle-mounted cooling circulation system.

[0012] Furthermore, a row of equally spaced horizontal bars are fixedly installed in the upper and lower openings of the battery protection box, the bottom ends of the upper row of horizontal bars abut against the top ends of a row of batteries, and the top ends of the lower row of horizontal bars abut against the bottom ends of a row of batteries; Ventilation slots are provided on the upper and lower ends of the two short side walls of the battery protection box, located between a row of horizontal railings, and rectangular air collecting covers are welded on the outer sides of the two short side walls of the battery protection box. The rectangular air collecting covers are connected to the ventilation slots on the corresponding sides and cover the ventilation slots on the corresponding sides inside them.

[0013] Furthermore, three ventilation holes are evenly spaced through the two side walls of the two rectangular wind collecting covers, and fans are fixedly installed on the outsides of the three ventilation holes on one rectangular wind collecting cover. An air suction port is provided on one end of the fan facing the rectangular wind collecting cover, and the air suction port is connected to the ventilation port, and an air outlet is provided at the other end of the fan; A short sliding shaft is welded around the side of the retaining ring facing the battery protection box, and a mounting ring with an increased diameter is welded to the air outlet of the fan. The short sliding shaft on the retaining ring on the side where the fan is located is positioned in a spring-loaded manner and slides through the mounting ring at the corresponding position. The retaining ring and metal filter on this side abut and cover the air outlet of the fan at the corresponding position. The short sliding shaft on the retaining ring away from the fan side is positioned in a spring-pushed manner and slides through the part of the rectangular wind collecting cover on this side near the corresponding vent, and the retaining ring and metal filter on this side are pressed against and cover the vent at the corresponding position on this side.

[0014] Furthermore, a patch temperature sensor is glued and fixed to the middle position of the top of each battery, and a controller is fixedly installed on the outside of a long side wall of the battery protection box. The controller is equipped with a motor control module and a temperature control module. The motor control module is electrically connected to the drive motors on all small electric ball valves and is used to control the start and direction of the drive motors. The temperature control module is communicated with all temperature sensors, and the temperature control module is communicated with the motor control module.

[0015] The present invention provides a new energy vehicle battery pack cooling structure, which has the following beneficial effects: 1. Through two sets of crank slider mechanisms consisting of two horizontal push plates, connecting rods and I-shaped drive rods, the reciprocating insertion and withdrawal of the I-shaped drive rod can drive the two filter components to slide and vibrate synchronously, thereby cleaning the two filter components at one time. This can eliminate the tedious steps of sliding and driving the two filter components step by step, and help improve the overall cleaning efficiency of the two filter components.

[0016] 2. The temperature control module and the temperature control module are used in conjunction to control the opening and closing degree of the small electric ball valve in the corresponding area of ​​the battery through the temperature change of the battery at a specified position, so as to realize the appropriate adjustment of the flow rate and flow of the cooling medium inside the narrow flat cooling tube in the area near the battery, so as to control the cooling load applied by these narrow flat cooling tubes to the battery, and achieve the effect of accurate and rapid heat dissipation of the battery. Compared with the design of setting the narrow flat cooling tube to a constant flow rate and unable to implement appropriate adjustment of the cooling capacity of the narrow flat cooling tube according to the battery temperature, this has a better cooling effect on the battery and lower cooling energy consumption.

[0017] 3. The circulating heat dissipation airflow formed by the suction of three fans in multiple heat dissipation channels is close to the upper and lower ends of the battery. The heat exchange cooling effect formed by a row of narrow flat cooling tubes is applied to the two vertical long sides of the battery. In this way, the cooling effect formed by the three fans and a row of narrow flat cooling tubes can surround most of the battery, implementing dual and more comprehensive cooling and heat dissipation for the battery, effectively improving the cooling effect of the battery.

[0018] Fourth, when the U-shaped protective frame is deformed by impact, it is possible that it bends upward and comes into contact with the two horizontal push plates, the connecting rod and the I-shaped drive rod, causing the above three components to be pressed and jammed. Since the anti-collision bar as a whole adopts a sliding installation form that is pulled and positioned by a tension spring, when the above situation occurs, the U-shaped protective frame can still slide and shift under the pushing drive action of the above three components to loosen the above three components. This can prevent the above three components from being jammed when the anti-collision bar is deformed by impact, which helps to ensure the normal operation of the above three components under the above conditions and ensure the normal and effective implementation of the vibration cleaning function of the two filter components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0020] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached figure: Figure 1 Shows a schematic diagram of the overall structure of the present invention; Figure 2 Shows a schematic diagram of the installation position of the filter assembly of the present invention; Figure 3 Shows a schematic diagram of the overall bottom side structure of the present invention; Figure 4 It shows a schematic diagram of the box cover of the present invention in a disassembled and opened state; Figure 5 A schematic diagram of the internal structure of the bottom side of the battery protection box of the present invention is shown; Figure 6 A schematic diagram of a disassembled state of the crash barrier of the present invention is shown; Figure 7 Shows a schematic diagram of the I-shaped drive rod structure of the present invention; Figure 8 A schematic diagram of the inner structure of the top of the battery protection box of the present invention is shown; Figure 9 A schematic diagram of the inner structure of the rectangular air collecting hood of the present invention is shown; Figure 10 Shows a schematic structural diagram of the filter assembly of the present invention; Figure 11 Shown is a control flow chart of the present invention.

[0022] List of reference numerals: 1. Battery pack; 101. Battery protection box; 102. Box cover; 1021. Shaft sleeve; 103. Vertical rod sleeve; 104. Rectangular wind hood; 1041. Ventilation port; 105. I-shaped drive rod; 106. Connecting rod; 107. Horizontal push plate; 108. Ventilation slot; 109. Horizontal guardrail; 2. Fan; 201. Mounting ring; 3. Filter assembly; 301. Longitudinal support rod; 302. Retaining ring; 3021. Short sliding shaft; 303. T-shaped load-bearing rod; 4. Narrow flat cooling tube; 5. Small electric ball valve; 6. Crash barrier; 601. U-shaped protective frame; 6011. Limit block; 602. Horizontal connecting rod; 603. Tension spring; 7. Battery; 8. Temperature sensor; 9. Controller. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the described 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.

[0024] Please refer to Figures 1 to 11 ; Example 1: The present invention proposes a new energy vehicle battery pack cooling structure, comprising a battery pack 1 and a filter assembly 3. Two filter assemblies 3 are symmetrically and slidably mounted on the two short sides of the battery pack 1. A crash barrier 6 is slidably installed under the battery pack 1; the crash barrier 6 includes a U-shaped protective frame 601 and a horizontal connecting rod 602, and the U-shaped protective frames 601 are arranged in a row and are arranged at equal intervals along the length direction of the battery pack 1, and two horizontal connecting rods 602 are symmetrically welded between the horizontal bottom rods of each two U-shaped protective frames 601; a row of equally spaced vertical rod sleeves 103 are welded on both long sides of the battery pack 1, and the two upright side rods of the U-shaped protective frame 601 are slidably fitted with the two vertical rod sleeves 103 at the corresponding positions, and tension springs 603 are hung between the top ends of the four upright side rods on the two outermost U-shaped protective frames 601 and the top ends of the two long sides of the battery pack 1; a driving mechanism for synchronously driving the two filter assemblies 3 to vibrate and clean is provided at the bottom of the battery pack 1, and the driving mechanism is located between a row of U-shaped protective frames 601 and the battery pack 1; Limiting blocks 6011 are welded to the inner sides of the bottom ends of the two upright side bars of the U-shaped protective frame 601 , and the limiting blocks 6011 are in contact with the bottom of the battery pack 1 .

[0025] Preferably, the battery pack 1 includes a battery protection box 101, a box cover 102 and a battery 7. The battery protection box 101 is a rectangular structure with upper and lower ends opened. The upper and lower openings of the battery protection box 101 are sealed with a box cover 102 of corresponding shape. The battery 7 is installed inside the battery protection box 101; the battery pack 1 is hoisted and fixed on the chassis of the new energy vehicle, and the bottom of the lower box cover 102 is welded and hoisted with a shaft sleeve 1021 at the middle position in the length direction; The anti-collision barrier 6 is hoisted on the chassis of the new energy vehicle and is located below the battery pack 1. It can block the upward impact force from the bottom of the chassis, reduce the chance of the battery pack 1 being damaged by the impact, and provide better impact protection for the battery pack 1. Through the abutment and limitation of two rows of limit blocks 6011, the anti-collision barrier 6 can be pulled by the tension springs 603 at all four sides and maintained in the anti-collision usage state where it is fixed and hoisted below the battery pack 1.

[0026] Preferably, the driving mechanism includes an I-shaped driving rod 105, a connecting rod 106 and a transverse push plate 107. The I-shaped driving rod 105 is slidably installed on the shaft sleeve 1021 and is positioned by spring push. The transverse push plate 107 is provided with two parts and is symmetrically slidably installed on the lower box cover 102 on both sides of the shaft sleeve 1021. The tail ends of the two transverse push plates 107 and the ends of the I-shaped driving rod 105 away from the shaft sleeve 1021 are symmetrically connected to the two connecting rods 106 in rotation; the end of the I-shaped driving rod 105 away from the connecting rod 106 protrudes from the battery pack 1 and is located below the chassis of the new energy vehicle and extends to the outer edge of the chassis. The two horizontal push plates 107, the connecting rod 106 and the I-shaped drive rod 105 are connected together to form two sets of crank slider mechanisms. Through these two sets of mechanisms, the I-shaped drive rod 105 is inserted and slid back and forth along the shaft sleeve 1021, which can drive the two horizontal push plates 107 to slide back and forth toward each other.

[0027] Preferably, the filter assembly 3 as a whole is composed of two longitudinal support rods 301 symmetrically arranged above and below and three retaining rings 302 welded at equal intervals between the two longitudinal support rods 301. The inside of the retaining ring 302 is covered with a metal filter mesh, and a horizontally supported T-shaped force rod 303 is welded at the middle position of the bottom of the lower longitudinal support rod 301.

[0028] Preferably, the ends of the two horizontal push plates 107 away from the connecting rod 106 are in contact with the longitudinal rod sections of the two T-shaped force-bearing rods 303; the vertical reference plane of the longitudinal rod section of the T-shaped force-bearing rod 303 facing the horizontal push plate 107 coincides with the vertical reference plane of the corresponding short side of the box cover 102.

[0029] Preferably, a row of equally spaced and longitudinally arranged narrow flat cooling tubes 4 is welded through the interior of the battery protection box 101, and two rows of vertical rod sleeves 103 are staggered with the ends of a row of narrow flat cooling tubes 4; a row of narrow flat cooling tubes 4 is spaced apart inside the battery protection box 101 to form a row of long mounting grooves, and each long mounting groove is embedded with a battery 7 of a corresponding shape; Two upper and lower heat dissipation cavities are formed between a row of batteries 7 and the two box covers 102.

[0030] Preferably, the liquid inlet ends of a row of narrow flat cooling tubes 4 are all threadedly connected with small electric ball valves 5, and a row of narrow flat cooling tubes 4 are connected in series to an external vehicle-mounted cooling circulation system 1; A row of narrow flat cooling tubes 4 has a cooling medium circulating inside it, and every two adjacent narrow flat cooling tubes 4 are in contact with both sides of the battery 7 between them; a row of narrow flat cooling tubes 4 can exchange heat with the battery 7 through the cooling medium circulating inside it, thereby cooling the battery 7.

[0031] Preferably, a row of equally spaced horizontal bars 109 are fixedly installed in the upper and lower openings of the battery protection box 101, the bottom ends of the upper row of horizontal bars 109 are in contact with the top ends of a row of batteries 7, and the top ends of the lower row of horizontal bars 109 are in contact with the bottom ends of a row of batteries 7; ventilation slots 108 are penetrated at the upper and lower ends of the two short side walls of the battery protection box 101, and rectangular air collecting covers 104 are welded to the outer sides of the two short side walls of the battery protection box 101, which are connected to the ventilation slots 108 on the corresponding side and cover the ventilation slots 108 on the corresponding side; The upper and lower rows of horizontal bars 109 are evenly distributed in the upper and lower heat dissipation cavities. The two rows of horizontal bars 109 divide the two heat dissipation cavities into multiple heat dissipation channels. The hot air flow heated by the battery 7 flows through the multiple heat dissipation channels to dissipate the heat. Preferably, three ventilation holes 1041 are evenly spaced through the two side walls of the two rectangular wind collecting covers 104. A fan 2 is fixedly installed on the outside of the three ventilation holes 1041 on one rectangular wind collecting cover 104. An air suction port is provided on one end of the fan 2 facing the rectangular wind collecting cover 104. The air suction port is connected to the ventilation hole 1041, and an air outlet is provided at the other end of the fan 2. A short sliding shaft 3021 is welded around the side of the retaining ring 302 facing the battery protection box 101, and a mounting ring 201 with an increased diameter is welded on the air outlet of the fan 2. The short sliding shaft 3021 on the retaining ring 302 on the side where the fan 2 is located is slidably matched with the mounting ring 201 at the corresponding position in the form of a spring push positioning, and the retaining ring 302 and the metal filter on this side abut and cover the air outlet of the fan 2 at the corresponding position; the short sliding shaft 3021 on the retaining ring 302 on the side away from the fan 2 is slidably matched with the part of the rectangular wind collecting cover 104 on this side close to the corresponding position of the vent 1041 in the form of a spring push positioning, and the retaining ring 302 and the metal filter on this side abut and cover the vent 1041 at the corresponding position on this side; The filter assembly 3 installed on the air outlet of the fan 2 can filter the air entering the rectangular air collecting cover 104 and the battery pack 1 through the air outlet, so as to prevent the outside air from flowing directly into the rectangular air collecting cover 104 and the battery pack 1 without being filtered when the fan 2 is idle and stopped, causing a large amount of dust to accumulate in the rectangular air collecting cover 104 and the battery pack 1, resulting in excessive dust adhesion and accumulation on the upper and lower surfaces of the batteries 7 in the battery pack 1, thereby affecting the heat dissipation and cooling of the batteries 7; The filter assembly 3 installed on the rectangular wind collecting hood 104 on the side away from the fan 2 can filter the air entering the battery pack 1 through the three ventilation holes 1041 on the rectangular wind collecting hood 104, so as to prevent the outside air from directly flowing into the rectangular wind collecting hood 104 and the battery pack 1 without filtering, causing a large amount of dust accumulation inside the rectangular wind collecting hood 104 and the battery pack 1, resulting in excessive dust accumulation on the upper and lower surfaces of the batteries 7 inside the battery pack 1, affecting the heat dissipation and cooling of the batteries 7.

[0032] When the two filter assemblies 3 are driven to slide back and forth, a vibration effect is generated. Relying on the vibration effect, the two filter assemblies 3 can clean the dust and impurities trapped on the metal filter screen and clear the metal filter screen. In this way, the two crank slider mechanisms composed of the two horizontal push plates 107, the connecting rod 106 and the I-shaped drive rod 105 can be used to reciprocate and push the I-shaped drive rod 105 to drive the two filter assemblies 3 to slide and vibrate synchronously, thereby cleaning the two filter assemblies 3 at one time. This can save the tedious steps of sliding and driving the two filter assemblies 3 step by step, thereby helping to improve the overall cleaning efficiency of the two filter assemblies 3. The I-shaped driving rod 105 is a driving component that receives the hand-pushing driving force to drive the two filter assemblies 3 to perform vibration cleaning. The end thereof away from the connecting rod 106 protrudes from the battery pack 1 and is located below the chassis of the new energy vehicle and extends to the outer edge of the chassis. This allows the end of the I-shaped driving rod 105 away from the connecting rod 106 to extend and be exposed below the outer edge of the chassis, making it convenient for the driver or auto repair personnel to directly grasp the end extending outward and protruding on one side of the new energy vehicle, and reciprocate to drive the I-shaped driving rod 105 to perform vibration cleaning on the two filter assemblies 3. This can save the tedious steps of having to drill under the vehicle or lift the new energy vehicle as a whole to expose the two filter assemblies 3, and then manually grasp the two filter assemblies 3 to perform vibration cleaning, thereby helping to improve the convenience and practicality of the vibration cleaning function of the two filter assemblies 3. Under the suction and conveying effect of the three fans 2, the circulation speed of the hot air flow in the multiple heat dissipation channels inside the battery pack 1 is accelerated, which can improve the heat dissipation and cooling effect of the battery 7. The hot air flow in the multiple heat dissipation channels is sucked out by the fans 2 in sequence through the two rows of ventilation slots 108 close to the fan 2, the rectangular air collecting cover 104, and the three vents 1041. The new low-temperature cold air flow from the outside is sucked into the multiple heat dissipation channels by the fans 2 in sequence through the rectangular air collecting cover 104, the three vents 1041, and the two rows of ventilation slots 108 away from the fan 2. The circulating heat dissipation airflow drawn by the three fans 2 in the multiple heat dissipation channels is attached to the upper and lower ends of the battery 7. The heat exchange cooling effect formed by the row of narrow flat cooling tubes 4 is applied to the two vertical long sides of the battery 7. In this way, the cooling effect formed by the three fans 2 and the row of narrow flat cooling tubes 4 can surround and cover most of the battery 7, implementing dual and more comprehensive cooling and heat dissipation for the battery 7, effectively improving the cooling effect of the battery 7. When the U-shaped protective frame 601 is deformed by impact, it may bend upward and come into contact with the two horizontal push plates 107, the connecting rod 106 and the I-shaped drive rod 105, pressing and jamming the above three components. Since the anti-collision bar 6 as a whole adopts a sliding installation form pulled and positioned by the tension spring 603, when the above situation occurs, the U-shaped protective frame 601 can still slide and shift under the pushing drive action of the above three components to loosen the above three components. This can avoid the above three components from getting stuck when the anti-collision bar 6 is deformed by impact, which helps to ensure the normal operation of the above three components under the above conditions and ensure the normal and effective implementation of the vibration cleaning function of the two filter components 3.

[0033] Based on the first embodiment, the second embodiment: A patch-type temperature sensor 8 is adhered and fixed to the middle position of the top of each battery 7, and a controller 9 is fixedly installed on the outside of a long side wall of the battery protection box 101; a motor control module and a temperature control module are provided inside the controller 9. The motor control module is electrically connected to the drive motors on all small electric ball valves 5 to control the start and direction of the drive motors. The temperature control module is in communication with all temperature sensors 8, and the temperature control module is in communication with the motor control module. When the temperature sensor 8 is used to monitor the temperature of the battery 7 in real time, when the temperature control module detects that the temperature of some batteries 7 is heating up too quickly and the temperature is too high, the temperature control module marks the positions of the batteries 7 and generates corresponding control signals. After the temperature control module generates the control signals with position marks, these signals are transmitted to the motor control module. The motor control module starts the small electric ball valves 5 corresponding to the positions of the batteries 7 according to these marking signals, and controls the motors of the small electric ball valves 5 to rotate clockwise to expand the flow rate and flow of the cooling medium inside the narrow flat cooling tubes 4 corresponding to the positions of the batteries 7, so as to implement accurate and efficient cooling of the batteries 7 with relatively high temperatures. Based on the above, when the temperature of some batteries 7 is low, the temperature control module starts and controls the motors of the small electric ball valves 5 corresponding to the positions of the batteries 7 to rotate counterclockwise through the motor control module to reduce the flow rate and flow of the cooling medium inside the narrow flat cooling tubes 4 corresponding to the positions of the batteries 7, thereby reducing cooling energy consumption; The temperature control module and the temperature control module are used in conjunction with each other, and the opening and closing degree of the small electric ball valve 5 in the corresponding area of ​​the battery 7 can be controlled by the temperature change of the battery 7 at the specified position, so as to realize the appropriate adjustment of the flow rate and flow of the cooling medium inside the narrow flat cooling tube 4 in the area near the battery 7, so as to control the cooling load applied by these narrow flat cooling tubes 4 to the battery 7, so as to achieve the effect of accurate and rapid heat dissipation of the battery 7. Compared with the design of setting the narrow flat cooling tube 4 to a constant flow rate and unable to implement appropriate adjustment of the cooling capacity of the narrow flat cooling tube 4 according to the temperature of the battery 7, this has a better cooling effect on the battery 7 and lower cooling energy consumption.

[0034] The working principle of this embodiment is as follows: the motor control module is electrically connected to the drive motors on all small electric ball valves 5 to control the start and direction of the drive motors, the temperature control module is communicatively connected to all temperature sensors 8, and the temperature control module is communicatively connected to the motor control module; When the temperature sensor 8 is used to monitor the temperature of the battery 7 in real time, when the temperature control module detects that some batteries 7 heat up too quickly and the temperature is too high, the temperature control module marks the positions of the batteries 7 and forms corresponding control signals. After the temperature control module forms the control signals with position marks, it transmits these signals to the motor control module. The motor control module starts the small electric ball valves 5 corresponding to the positions of the batteries 7 according to these marking signals, and controls the motors of the small electric ball valves 5 to rotate clockwise to expand the flow rate and flow of the cooling medium inside the narrow flat cooling tubes 4 corresponding to the positions of the batteries 7, so as to implement accurate and efficient cooling of the batteries 7 with relatively high temperatures. Based on the above, when the temperature of some batteries 7 is low, the temperature control module starts and controls the motors of the small electric ball valves 5 corresponding to the positions of the batteries 7 to rotate counterclockwise through the motor control module to reduce the flow rate and flow of the cooling medium inside the narrow flat cooling tubes 4 corresponding to the positions of the batteries 7, thereby reducing cooling energy consumption.

[0035] In this article, there are several points to note: 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0036] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0037] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A cooling structure for a new energy vehicle battery pack, comprising a battery pack (1) and a filtering component (3). Two filtering components (3) are symmetrically and slidably installed on the two short sides of the battery pack (1). It is characterized in that A bumper (6) is slidably installed below the battery pack (1). The bumper (6) includes a U-shaped protective frame (601) and a horizontally arranged connecting rod (602). There is a row of U-shaped protective frames (601) arranged at equal intervals along the length direction of the battery pack (1). Two horizontally arranged connecting rods (602) are symmetrically welded between the horizontal bottom rods of every two U-shaped protective frames (601). A row of vertically arranged rod sleeves (103) with equal intervals are welded on both long sides of the battery pack (1). The two vertical side rods of the U-shaped protective frame (601) are slidably fitted through the corresponding two vertically arranged rod sleeves (103). Tension springs (603) are hung between the tops of the four vertical side rods of the two outermost U-shaped protective frames (601) and the top parts of both long sides of the battery pack (1). A driving mechanism for synchronously driving the two filtering components (3) to vibrate and clean is arranged at the bottom of the battery pack (1), and the driving mechanism is located between a row of U-shaped protective frames (601) and the battery pack (1). Limit blocks (6011) are welded on the inner sides of the bottom parts of the two vertical side rods of the U-shaped protective frame (601), and the limit blocks (6011) are in abutting contact with the bottom of the battery pack (1).

2. A new energy vehicle battery pack cooling structure according to claim 1, characterized in that: The battery pack (1) includes a battery protection box (101), a box cover (102), and a battery (7). The battery protection box (101) has a rectangular structure with openings at both upper and lower ends. Box covers (102) with suitable shapes are hermetically sealed on the upper and lower openings of the battery protection box (101), and the battery (7) is installed inside the battery protection box (101). The battery pack (1) is hoisted and fixed on the chassis of a new energy vehicle. A bushing (1021) is welded and hoisted at the middle position of the bottom of the lower box cover (102) in the length direction.

3. A new energy vehicle battery pack cooling structure according to claim 2, characterized in that: The driving mechanism includes an I-shaped driving rod (105), a connecting rod (106), and a horizontally arranged top push plate (107). The I-shaped driving rod (105) is slidably installed through the bushing (1021) and is positioned by spring pushing. Two horizontally arranged top push plates (107) are symmetrically and slidably installed on the parts of the lower box cover (102) on both sides of the bushing (1021). Two connecting rods (106) are symmetrically and rotatably connected between the tails of the two horizontally arranged top push plates (107) and the end of the I-shaped driving rod (105) far from the bushing (1021). The end of the I-shaped driving rod (105) far from the connecting rod (106) protrudes from the battery pack (1) and is located below the chassis of the new energy vehicle and extends to the outer edge position of the chassis.

4. A new energy vehicle battery pack cooling structure according to claim 3, characterized in that: The filtering component (3) is integrally composed of two vertically arranged support rods (3) symmetrically arranged up and down and three retaining rings (302) welded at equal intervals between the two vertically arranged support rods (301). A metal filter screen is covered inside the retaining ring (302). A horizontally supported T-shaped force-bearing rod (303) is welded at the middle position of the bottom of the lower vertically arranged support rod (301).

5. A new energy vehicle battery pack cooling structure according to claim 4, characterized in that: One end of the two transverse push plates (107) away from the connecting rod (106) is in contact with the longitudinal rod sections of the two T-shaped force-bearing rods (303); The vertical reference plane on the side of the longitudinal rod section of the T-shaped force-bearing rod (303) facing the horizontal push plate (107) coincides with the vertical reference plane on the corresponding short side of the box cover (102).

6. A new energy vehicle battery pack cooling structure according to claim 2, characterized in that: A row of equally spaced and longitudinally arranged narrow flat cooling tubes (4) is welded through the interior of the battery protection box (101), and two rows of vertical rod sleeves (103) and two ends of a row of narrow flat cooling tubes (4) are staggered. A row of narrow flat cooling tubes (4) are spaced apart inside the battery protection box (101) to form a row of long installation grooves, and a battery (7) of a corresponding shape is embedded in each of the long installation grooves.

7. A new energy vehicle battery pack cooling structure according to claim 6, characterized in that: The liquid inlet ends of a row of narrow flat cooling tubes (4) are all threadedly connected to small electric ball valves (5), and the row of narrow flat cooling tubes (4) are connected in series to an external vehicle-mounted cooling circulation system.

8. The new energy vehicle battery pack cooling structure according to claim 6, characterized in that: A row of equally spaced horizontal bars (109) are fixedly installed in the upper and lower openings of the battery protection box (101), the bottom ends of the upper row of horizontal bars (109) abut against the top ends of a row of batteries (7), and the top ends of the lower row of horizontal bars (109) abut against the bottom ends of a row of batteries (7); Ventilation slots (108) are provided on the upper and lower ends of the two short side walls of the battery protection box (101) between a row of horizontal railings (109), and rectangular air collecting covers (104) are welded to the outer sides of the two short side walls of the battery protection box (101). The rectangular air collecting covers (104) are connected to the ventilation slots (108) on the corresponding side and cover the ventilation slots (108) on the corresponding side.

9. A new energy vehicle battery pack cooling structure according to claim 8, characterized in that: Three ventilation holes (1041) are evenly spaced through the two side walls of the two rectangular wind collecting covers (104), and a fan (2) is fixedly installed on the outside of the three ventilation holes (1041) on one rectangular wind collecting cover (104). An air suction port is provided on one end of the fan (2) facing the rectangular wind collecting cover (104), and the air suction port is connected to the ventilation hole (1041). An air outlet is provided at the other end of the fan (2); A short sliding shaft (3021) is welded around the side of the retaining ring (302) facing the battery protection box (101), and a mounting ring (201) with an increased diameter is welded on the air outlet of the fan (2). The short sliding shaft (3021) on the retaining ring (302) on the side where the fan (2) is located is slidably matched with the mounting ring (201) at the corresponding position in the form of a spring push positioning, and the retaining ring (302) on this side and the metal filter are pressed against and covered on the air outlet of the fan (2) at the corresponding position. The short sliding shaft (3021) on the retaining ring (302) on the side away from the fan (2) is slidably matched with the portion of the rectangular wind collecting cover (104) on this side close to the corresponding position of the vent (1041) in the form of a spring push positioning, and the retaining ring (302) on this side and the metal filter are pressed against and covered on the corresponding position of the vent (1041) on this side.

10. A new energy vehicle battery pack cooling structure according to claim 8, characterized in that: A patch temperature sensor (8) is glued and fixed to the middle position of the top of each battery (7), and a controller (9) is fixedly installed on the outer side of a long side wall of the battery protection box (101). The controller (9) is internally provided with a motor control module and a temperature control module. The motor control module is electrically connected to the drive motors on all the small electric ball valves (5) and is used to control the start and direction of the drive motors. The temperature control module is communicatively connected to all the temperature sensors (8), and the temperature control module is communicatively connected to the motor control module.

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