Temperature control detection structure for lithium battery of electric vehicle

Abstract

The utility model discloses a temperature control detection structure for a lithium battery of an electric vehicle, which comprises a protective shell, a lithium battery is fixedly connected in the protective shell, and a protective bottom plate is fixed at the bottom of the protective shell; the air cooling heat dissipation mechanism comprises a motor, a first connecting rod, a second connecting rod, a third connecting rod, a connecting plate and an air guide plate; a vertical plate is fixed to the top of the protection bottom plate, the motor is fixedly connected to the vertical plate, one end of the first connecting rod is fixedly connected to the power output end of the motor, one end of the second connecting rod is rotationally connected to the first connecting rod, the side wall of the third connecting rod is rotationally connected with the second connecting rod, and the end of the connecting plate is rotationally connected to the side wall of the third connecting rod. And one end of the air deflector is fixedly connected with the connecting plate. The lithium battery is subjected to primary heat dissipation through the air cooling heat dissipation mechanism, the heat dissipation effect of the lithium battery is further improved through the water cooling heat dissipation mechanism, and the lithium battery is protected through the protection mechanism and is prevented from being hit by stones to be damaged.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery temperature control technology, and in particular to a temperature control and detection structure for lithium batteries in electric vehicles. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as the positive / negative electrode materials and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental control. Lithium-ion batteries do not contain metallic lithium and are rechargeable. With the development of science and technology, lithium-ion batteries have become the mainstream technology.

[0003] New energy vehicles rely on lithium batteries for power. After driving for a period of time, the batteries at the bottom of the car will continue to get hot due to operation, especially in summer when the temperature is too high. The overheating of lithium batteries will not only affect the normal use of the battery, but may also cause spontaneous combustion, seriously threatening the lives of the people in the car. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a temperature control and detection structure for lithium batteries in electric vehicles, capable of achieving a cooling effect on the lithium battery.

[0005] The temperature control and detection structure for lithium batteries in electric vehicles according to an embodiment of the present invention includes:

[0006] A protective casing, in which a lithium battery is fixedly connected, and a protective base plate is fixedly attached to the bottom of the protective casing;

[0007] The air-cooled heat dissipation mechanism includes a motor, a first connecting rod, a second connecting rod, a third connecting rod, a connecting plate, and an air guide plate.

[0008] A vertical plate is fixed to the top of the protective base plate. The motor is fixedly connected to the side wall of the vertical plate. One end of the first connecting rod is fixedly connected to the power output end of the motor. One end of the second connecting rod is rotatably connected to the other end of the first connecting rod. The side wall of the third connecting rod is rotatably connected to the other end of the second connecting rod. There are multiple connecting plates. The ends of the multiple connecting plates are equidistantly rotatably connected to the side wall of the third connecting rod. One end of the air guide plate is fixedly connected to the connecting plate.

[0009] According to some embodiments of the present invention, the air-cooled heat dissipation mechanism further includes an air inlet;

[0010] There are multiple air inlets, which are equidistantly located on the protective base plate. The connecting plate is rotatably connected to one end of the air inlet, and the other end of the air guide plate is rotatably connected to the other end of the air inlet.

[0011] According to some embodiments of the present invention, the air inlet has a third groove and a fourth groove on each of its two side walls, and the air guide plate has a first groove and a second groove on each of its two sides. The first groove and the third groove are fitted together, and the second groove and the fourth groove are fitted together.

[0012] According to some embodiments of the present invention, a water-cooled heat dissipation mechanism is also included, which includes a temperature sensor, a circulation pipe, and a chilled water compressor.

[0013] The temperature sensor is a plurality of such sensors, which are equidistantly distributed and fixedly connected to the surface of the lithium battery. The circulation pipe is fixedly connected to the surface of the lithium battery. The water compressor is fixedly connected to the side wall of the protective casing. One end of the circulation pipe is fixedly connected to the water inlet of the water compressor, and the other end of the circulation pipe is fixedly connected to the water outlet of the water compressor.

[0014] According to some embodiments of this utility model, a protective mechanism is also included, which includes a socket, a protective net, and a slide rail;

[0015] The socket is located at one end of the protective base plate, the slide rail is fixed to the side wall of the protective shell, the protective net passes through the socket, and the protective net is slidably connected inside the slide rail.

[0016] According to some embodiments of this utility model, the protective net is a soft steel wire mesh, and a long plate is fixedly connected to the end of the protective net. The long plate is fitted into the slot, and fixing holes are opened at both ends of the long plate.

[0017] According to some embodiments of the present invention, a fixing component is also included. There are two fixing components respectively fixed at both ends of the socket. The fixing component includes a protruding plate, a sliding groove, a fixing post, and an elastic element.

[0018] The convex plate is fixedly connected to one end of the socket and is fitted into the fixing hole. The sliding groove is formed on the surface of the convex plate. There are two fixing posts, which are symmetrically slidably connected in the sliding groove. The two ends of the elastic element are respectively fixedly connected to the side walls of the two fixing posts.

[0019] According to some embodiments of this utility model, the elastic element includes a telescopic rod and a spring;

[0020] The telescopic rod is fixedly connected to the side walls of two fixed columns at both ends, and the spring is fixedly connected to the side walls of two fixed columns at both ends, with the telescopic rod passing through the spring.

[0021] The present invention has the following beneficial effects:

[0022] This invention utilizes a motor to drive a first connecting rod to rotate, which in turn drives a second connecting rod to move, which in turn drives a third connecting rod to move. The third connecting rod then drives a connecting plate to rotate on the side of the air inlet. The connecting plate, in turn, drives a guide plate to rotate, opening the guide plate to direct the airflow generated by the vehicle's movement into the protective casing and expel the hot air generated by the lithium battery. This airflow lowers the temperature of the lithium battery. When the lithium battery temperature is too high and the cooling mechanism is insufficient, a chilled water compressor cools the coolant in the circulation pipe and circulates it within the pipe to further reduce the lithium battery temperature, preventing overheating that could affect normal use or cause spontaneous combustion. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the first overall structure of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the second overall structure of an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the air-cooled heat dissipation mechanism according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the protective mechanism structure according to an embodiment of the present utility model;

[0028] Figure 5 This is an embodiment of the present utility model. Figure 3 A schematic diagram of the structure of part A in the diagram;

[0029] Figure 6 This is an embodiment of the present utility model. Figure 4 A schematic diagram of section B in the diagram.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 100. Protective casing; 110. Protective base plate; 111. Vertical plate; 200. Lithium battery;

[0032] 310. Temperature sensor; 320. Circulation pipe; 330. Chiller compressor;

[0033] 410. Motor; 420. First connecting rod; 430. Second connecting rod; 440. Third connecting rod; 450. Connecting plate; 460. Air guide plate; 461. First groove; 462. Second groove; 470. Air inlet; 471. Third groove; 472. Fourth groove;

[0034] 510. Insertion port; 520. Protective net; 521. Long plate; 522. Fixing hole; 530. Slide rail; 541. Protruding plate; 542. Slide groove; 543. Fixing post; 544. Telescopic rod; 545. Spring. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] Please see Figures 1-6 As shown, this utility model is a temperature control and detection structure for lithium batteries in electric vehicles, comprising:

[0037] A protective casing 100 is provided, a lithium battery 200 is fixedly connected inside the protective casing 100, and a protective base plate 110 is fixed to the bottom of the protective casing 100.

[0038] The air-cooled heat dissipation mechanism includes a motor 410, a first connecting rod 420, a second connecting rod 430, a third connecting rod 440, a connecting plate 450, and an air guide plate 460.

[0039] A vertical plate 111 is fixed to the top of the protective base plate 110. A motor 410 is fixedly connected to the side wall of the vertical plate 111. One end of the first connecting rod 420 is fixedly connected to the power output end of the motor 410. One end of the second connecting rod 430 is rotatably connected to the other end of the first connecting rod 420. The side wall of the third connecting rod 440 is rotatably connected to the other end of the second connecting rod 430. Multiple connecting plates 450 are provided, with their ends rotatably connected at equal intervals to the side wall of the third connecting rod 440. One end of the air guide plate 460 is fixedly connected to the connecting plate 450. When the connection is established, the motor 410 is started. The motor 410 drives the first connecting rod 420 to rotate, the first connecting rod 420 drives the second connecting rod 430 to move, the second connecting rod 430 drives the third connecting rod 440 to move, the third connecting rod 440 drives the connecting plate 450 to rotate, the connecting plate 450 drives the air guide plate 460 to rotate, and the air guide plate 460 rotates and opens, guiding the airflow generated by the car's movement into the protective shell 100 and blowing out the hot air generated by the lithium battery 200, thereby reducing the temperature of the lithium battery 200 through airflow.

[0040] The air-cooled heat dissipation mechanism also includes an air inlet 470;

[0041] There are multiple air inlets 470, which are equidistantly arranged on the protective base plate 110. Outside air enters the protective housing 100 through the air inlets 470. The connecting plate 450 is rotatably connected to one end of the air inlet 470, and the air guide plate 460 is rotatably connected to the other end of the air inlet 470. The rotation of the connecting plate 450 at one end of the air inlet 470 drives the other end of the air guide plate 460 to rotate at the other end of the air inlet 470.

[0042] The air inlet 470 has a third groove 471 and a fourth groove 472 on each side wall, and the air guide plate 460 has a first groove 461 and a second groove 462 on each side. The first groove 461 and the third groove 471 fit together, and the second groove 462 and the fourth groove 472 fit together, which increases the airtightness between the air guide plate 460 and the protective base plate 110 when the air guide plate 460 is closed.

[0043] It also includes a water-cooling heat dissipation mechanism, which includes a temperature sensor 310, a circulation pipe 320, and a chilled water compressor 330.

[0044] Multiple temperature sensors 310 are equidistantly distributed and fixedly connected to the surface of the lithium battery 200. A circulation pipe 320 is fixedly connected to the surface of the lithium battery 200. A water compressor 330 is fixedly connected to the side wall of the protective casing 100. One end of the circulation pipe 320 is fixedly connected to the water inlet of the water compressor 330, and the other end is fixedly connected to the water outlet of the water compressor 330. The temperature sensors 310 sense the temperature change of the lithium battery 200. When the temperature rise is sensed, the motor 410 is first started through the transmission line to lower the temperature of the lithium battery 200 through the air cooling mechanism. When the temperature of the lithium battery 200 is not significantly lowered by the air cooling mechanism, the water compressor 330 is started to cool the coolant inside the circulation pipe 320 and circulate it in the circulation pipe 320 to lower the temperature of the lithium battery 200.

[0045] Working principle: After the car has been driving for a period of time, the temperature sensor 310 detects that the temperature of the lithium battery 200 has risen. It then controls the motor 410 to start via a transmission line. The motor 410 drives the first connecting rod 420 to rotate, which in turn drives the second connecting rod 430 to move. The second connecting rod 430 then drives the third connecting rod 440 to move, which in turn drives the connecting plate 450 to rotate. The connecting plate 450 then drives the air guide plate 460 to rotate, opening the air guide plate 460 and directing the airflow generated by the car's movement into the protective casing 100. This blows out the hot air generated by the lithium battery 200, reducing its temperature through airflow. When the cooling effect of the air-cooled heat dissipation mechanism is no longer significant, the chilled water compressor 330 is started to cool the coolant inside the circulation pipe 320 and circulate it within the pipe, further reducing the temperature of the lithium battery 200 and preventing overheating that could affect normal use or cause spontaneous combustion.

[0046] Please see Figures 1-6 As shown, this embodiment, based on the above embodiment, further includes:

[0047] The protective mechanism includes a socket 510, a protective net 520, and a slide rail 530.

[0048] The socket 510 is located at one end of the protective base plate 110. The slide rail 530 is fixed to the side wall of the protective shell 100. The protective net 520 passes through the socket 510 and is slidably connected to the slide rail 530. After the protective net 520 is inserted into the socket 510, it slides along the slide rail 530 to block dust in the air and prevent stones on the road from entering the protective shell 100 through the air inlet 470 and hitting the lithium battery 200, causing damage to the surface of the lithium battery 200.

[0049] The protective net 520 is a soft steel wire mesh. A long plate 521 is fixedly connected to the end of the protective net 520. The long plate 521 is fitted into the socket 510. Fixing holes 522 are opened at both ends of the long plate 521. By pushing and pulling the long plate 521, the protective net 520 can be moved to slide in the slide rail 530.

[0050] It also includes a fixing component, which has two parts that are fixed to both ends of the socket 510. The fixing component includes a protruding plate 541, a sliding groove 542, a fixing post 543, and an elastic element.

[0051] A protruding plate 541 is fixedly connected to one end of the socket 510. The protruding plate 541 is fitted into the fixing hole 522. A sliding groove 542 is formed on the surface of the protruding plate 541. There are two fixing posts 543. The two fixing posts 543 are symmetrically slidably connected in the sliding groove 542. The two ends of the elastic element are respectively fixedly connected to the side walls of the two fixing posts 543. By pushing the two fixing posts 543 to slide in the sliding groove 542 and then close together, the elastic element is squeezed. When the two fixing posts 543 slide into the protruding plate 541, the fixing hole 522 on the long plate 521 is fitted into the protruding plate 541. The fixing posts 543 are then released, and the elastic element rebounds, causing the two fixing posts 543 to slide in the sliding groove 542 to both sides of the protruding plate 541. When the fixing posts 543 slide to the outermost side, the long plate 521 is fixed in the protruding plate 541, thereby fixing the protective net 520.

[0052] The elastic components include telescopic rod 544 and spring 545;

[0053] The telescopic rod 544 is fixedly connected to the side walls of two fixed posts 543 at both ends. The spring 545 is fixedly connected to the side walls of two fixed posts 543 at both ends. The telescopic rod 544 passes through the spring 545. By pushing the two fixed posts 543 to slide in the slide groove 542 and then move closer together, the telescopic rod 544 is shortened and the spring 545 is compressed. When the fixed posts 543 are released, the spring 545 rebounds and drives the two fixed posts 543 to slide towards both sides of the convex plate 541 in the slide groove 542, and the telescopic rod 544 is lengthened.

[0054] Working principle: After the protective net 520 is inserted into the socket 510, it slides along the slide rail 530, blocking dust in the air and preventing stones on the road from entering the protective casing 100 through the air inlet 470 and hitting the lithium battery 200, causing damage to the surface of the lithium battery 200. When too much dust accumulates on the surface of the protective net 520 and needs to be cleaned, the two fixed posts 543 are pushed to slide in the slide groove 542 and move closer together, causing the telescopic rod 544 to shorten and the spring 545 to compress. When the two fixed posts 543 slide into the convex plate 541, the long plate 521 is pulled, causing the protective net 520 to slide in the slide rail 530, thereby pulling the protective net 520 out of the socket 510. After the protective net 520 is cleaned, it is removed from the socket. After aligning 520 with the insertion port 510, push the long plate 521 to make the protective net 520 slide within the slide rail 530. Then push the two fixing posts 543 again to slide within the slide groove 542 and move closer together to shorten the telescopic rod 544 and compress the spring 545. When the two fixing posts 543 slide into the convex plate 541, continue to push the long plate 521 to engage the fixing hole 522 on the long plate 521 with the convex plate 541. Then release the fixing posts 543 to make the spring 545 rebound and drive the two fixing posts 543 to slide towards both sides of the convex plate 541 within the slide groove 542, and extend the telescopic rod 544. When the fixing posts 543 slide to the outermost side, fix the long plate 521 within the convex plate 541, thereby fixing the protective net 520.

[0055] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A temperature control and detection structure for lithium batteries in electric vehicles, characterized in that, include: A protective casing (100) is provided, in which a lithium battery (200) is fixedly connected, and a protective base plate (110) is fixedly attached to the bottom of the protective casing (100). The air-cooled heat dissipation mechanism includes a motor (410), a first connecting rod (420), a second connecting rod (430), a third connecting rod (440), a connecting plate (450), and an air guide plate (460). The protective base plate (110) has a vertical plate (111) fixed on top. The motor (410) is fixedly connected to the side wall of the vertical plate (111). One end of the first connecting rod (420) is fixedly connected to the power output end of the motor (410). One end of the second connecting rod (430) is rotatably connected to the other end of the first connecting rod (420). The side wall of the third connecting rod (440) is rotatably connected to the other end of the second connecting rod (430). There are multiple connecting plates (450). The ends of the multiple connecting plates (450) are equidistantly rotatably connected to the side wall of the third connecting rod (440). One end of the air guide plate (460) is fixedly connected to the connecting plate (450).

2. The temperature control and detection structure for lithium batteries in electric vehicles according to claim 1, characterized in that: The air-cooled heat dissipation mechanism also includes an air inlet (470). There are multiple air inlets (470), and the multiple air inlets (470) are equidistantly opened on the protective base plate (110). The connecting plate (450) is rotatably connected to one end of the air inlet (470), and the other end of the air guide plate (460) is rotatably connected to the other end of the air inlet (470).

3. The temperature control and detection structure for lithium batteries in electric vehicles according to claim 2, characterized in that: The air inlet (470) has a third groove (471) and a fourth groove (472) on its two side walls respectively. The air guide plate (460) has a first groove (461) and a second groove (462) on its two sides respectively. The first groove (461) and the third groove (471) fit together, and the second groove (462) and the fourth groove (472) fit together.

4. The temperature control and detection structure for lithium batteries in electric vehicles according to claim 3, characterized in that: It also includes a water-cooled heat dissipation mechanism, which includes a temperature sensor (310), a circulation pipe (320), and a chilled water compressor (330). There are multiple temperature sensors (310), which are equidistantly distributed and fixedly connected to the surface of the lithium battery (200). The circulation pipe (320) is fixedly connected to the surface of the lithium battery (200). The water compressor (330) is fixedly connected to the side wall of the protective shell (100). One end of the circulation pipe (320) is fixedly connected to the water inlet of the water compressor (330), and the other end of the circulation pipe (320) is fixedly connected to the water outlet of the water compressor (330).

5. The temperature control and detection structure for lithium batteries in electric vehicles according to claim 4, characterized in that: It also includes a protective mechanism, which includes a socket (510), a protective net (520), and a slide rail (530). The socket (510) is located at one end of the protective base plate (110), the slide rail (530) is fixed to the side wall of the protective shell (100), the protective net (520) passes through the socket (510), and the protective net (520) is slidably connected inside the slide rail (530).

6. The temperature control and detection structure for lithium batteries in electric vehicles according to claim 5, characterized in that: The protective net (520) is a soft steel wire mesh. A long plate (521) is fixedly connected to the end of the protective net (520). The long plate (521) is fitted into the socket (510). Fixing holes (522) are opened at both ends of the long plate (521).

7. The temperature control and detection structure for lithium batteries in electric vehicles according to claim 6, characterized in that: It also includes a fixing component, which has two parts that are fixed to both ends of the socket (510). The fixing component includes a protruding plate (541), a sliding groove (542), a fixing post (543), and an elastic element. The protruding plate (541) is fixedly connected to one end of the socket (510). The protruding plate (541) is fitted into the fixing hole (522). The sliding groove (542) is opened on the surface of the protruding plate (541). There are two fixing posts (543). The two fixing posts (543) are symmetrically slidably connected in the sliding groove (542). The two ends of the elastic element are respectively fixedly connected to the side walls of the two fixing posts (543).

8. The temperature control and detection structure for lithium batteries in electric vehicles according to claim 7, characterized in that: The elastic element includes a telescopic rod (544) and a spring (545); The telescopic rod (544) is fixedly connected to the side walls of two fixed columns (543) at both ends, and the spring (545) is fixedly connected to the side walls of two fixed columns (543) at both ends, and the telescopic rod (544) passes through the spring (545).

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