New energy automobile CTP module-free battery pack

Abstract

The invention discloses a new energy automobile CTP module-free battery pack which comprises an upper shell, a battery module, a limiting frame for limiting the battery module, heat-conducting glue, a liquid cooling plate, heat-insulating cotton and a lower shell, and further comprises fixing plates symmetrically fixed on the inner side of the limiting frame, and sliding grooves formed in the inner sides of the fixing plates in the length direction of the fixing plates, a vertical groove is formed in the top of the bottom end of the sliding groove, a communicating cylinder communicates with the connecting position of the vertical groove and the sliding groove, a second reset spring is assembled in the communicating cylinder, the second reset spring is connected with a limiting block in an antiparallelogram shape, and the inner side of the limiting frame is further slidably connected with a partition plate frame used for blocking a battery. The two ends of the partition plate frame are fixedly connected with sliding blocks capable of sliding in the vertical grooves and the sliding grooves. The battery pack can be cooled in the running process of an automobile, the temperature between batteries can be prevented from being too high, the cooling effect is improved, and the practicability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle battery packs, and in particular to a new energy vehicle CTP module-free battery pack. Background Art

[0002] Lithium-ion batteries and new energy electric vehicles have gradually matured in the past decade. Electricity is widely regarded by people around the world as the main alternative energy source for future automobile transportation, because it can be converted from a variety of clean and renewable energy sources such as solar energy, hydropower, wind energy and nuclear energy, and can also reduce the country's dependence on non-renewable energy such as oil. The development and use of new energy vehicles effectively solves the problem of heavy consumption of transportation energy and achieves sustainable development of a low-carbon economy.

[0003] The CTP module-free battery pack is made of upper shell, lower shell and liquid cooling plate using honeycomb aluminum technology, and the upper shell and lower shell are combined to form a box for storing battery modules, and the liquid cooling plate is set under the battery module to dissipate heat from the battery module. At the same time, the battery module is limited by the limit frame, so that the batteries inside the battery module are closely connected. However, the limit frame also has certain disadvantages:

[0004] Although the batteries are separated by spacers, since the batteries are in a heating state during use and the batteries are tightly fitted together by the spacers, the heat at the fitting surface of the batteries cannot be dissipated quickly when they are heated, which can easily lead to excessively high temperatures at the fitting surface of the batteries. The gas inside the battery pack of new energy vehicles is relatively stagnant during driving, so its heat dissipation effect is poor.

[0005] A CTP module-free battery pack for new energy vehicles is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a CTP module-free battery pack for new energy vehicles to solve the problem proposed in the above background technology that the batteries are currently isolated by spacers. Since the batteries are in a heating state during use and the batteries are tightly fitted with spacers, the heat at the fitting surface of the batteries cannot be quickly dissipated when they are heated, which easily leads to excessively high temperatures at the fitting surface of the batteries. During the driving of the new energy vehicle, the gas inside the battery pack is relatively non-flowing, so its heat dissipation effect is poor.

[0007] To achieve the above object, the present invention provides the following technical solutions: A CTP module-free battery pack for new energy vehicles, comprising an upper shell, a battery module, a limit frame for limiting the battery module, a thermal conductive adhesive, a liquid cooling plate, thermal insulation cotton and a lower shell;

[0008] Also includes:

[0009] A fixing plate is symmetrically fixed on the inner side of the limit frame, and a slide groove is opened on the inner side of the fixing plate along its length direction, and a vertical groove is opened on the top of the bottom end of the slide groove, and a connecting tube is connected at the connection between the vertical groove and the slide groove, and a return spring 2 is installed inside the connecting tube, and the return spring 2 is connected to a limit block in an equilateral trapezoid;

[0010] The inner side of the limit frame is also slidably connected to a partition frame for isolating the battery, and both ends of the partition frame are fixedly connected to sliders that can slide along the vertical groove and the inside of the slide groove, and the inner side of the partition frame is symmetrically and slidably connected to a piston plate, and the piston plate is provided with through holes at equal intervals;

[0011] Wherein, the two sides of the piston plate are fixedly connected with extension plates extending to the inside of the two sides of the partition frame, and the two symmetrically arranged extension plates are connected by a return spring;

[0012] The liquid cooling plate is fixedly connected to the lower shell by bolts, and the bolts are evenly distributed on the edge of the liquid cooling plate to ensure that the connection between the liquid cooling plate and the lower shell is firm and tight, and prevent the liquid cooling plate from being displaced or loosened due to vibration during driving of the car. The upper shell and the liquid cooling plate are sealed by a sealing strip, and the sealing strip surrounds the upper edge of the liquid cooling plate. When the upper shell is closed, the sealing strip prevents dust, moisture and impurities from entering the battery pack.

[0013] Preferably, one-way valve 1 and one-way valve 2 are respectively installed at the air holes opened at the upper and lower ends of the partition frame.

[0014] Preferably, U-shaped liquid cooling tubes are arranged at equal intervals at the bottom of the liquid cooling plate along its width direction, and the ends of the U-shaped liquid cooling tubes are respectively provided with a liquid inlet main pipe and a liquid discharge main pipe in upper and lower layers.

[0015] Preferably, the liquid inlet main pipe and the liquid discharge main pipe are connected to a liquid inlet pipe and a liquid discharge pipe respectively.

[0016] Preferably, one side of the piston plate is symmetrically rotatably connected to a rotating sleeve, and the interior of the rotating sleeve is slidably connected to a movable rod, and the movable rod is fixedly connected to the piston plate on the other side.

[0017] Preferably, rotating plates are symmetrically installed on both sides of the rotating sleeve, and pillars are symmetrically installed on the outer lower part of the movable rod, and sliding grooves are symmetrically opened through both sides of the rotating sleeve, and the pillars are slidably connected to the sliding grooves.

[0018] Preferably, the sliding groove is arranged on the rotating sleeve at an angle.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the CTP module-free battery pack for new energy vehicles enables the battery pack to be cooled during driving, thereby preventing the temperature between batteries from being too high, improving the cooling effect, and enhancing the practicality. The specific contents are as follows:

[0020] 1. A partition frame and two piston plates slidably connected inside the partition frame are used instead of the spacer. At the same time, a certain cavity is formed between the two piston plates, and through holes are evenly opened on the two piston plates, so that the heat dissipated between the batteries can enter the cavity formed between the two piston plates through the through holes, thereby preventing the temperature between the batteries from being too high and improving the heat dissipation effect. At the same time, when the vehicle shakes during driving, such as braking, driving uphill or downhill, and driving on uneven roads, the battery will drive the piston plate to slide inside the partition frame, and at the same time squeeze the return spring 1, and because the side of the battery blocks the through hole, the hot air entering the cavity will be discharged through the one-way valve 1 at the top of the partition frame during the sliding of the piston plate, further improving the heat dissipation effect of the battery, and at the same time, the one-way valve 2 at the bottom of the partition frame is used to suck the cold air at the bottom of the battery (the cold air is generated because the liquid cooling plate is installed at the bottom of the battery module) into the cavity during the reciprocating sliding of the piston plate, and the effect of breathing is used to further improve the heat dissipation effect of the battery; by allowing cold water to enter the liquid inlet main pipe from the liquid inlet pipe, and then enter the U-shaped liquid cooling pipe arranged at equal intervals, the battery module is cooled, and then enters the drain main pipe from the U-shaped liquid cooling pipe and is discharged from the drain pipe, so that the cold water takes out the heat during the flow process, achieving the effect of liquid cooling and heat dissipation;

[0021] 2. When the car is driving, the two piston plates move back and forth close to each other. During the movement of the two piston plates, the movable rod moves inside the rotating sleeve. After the movement, the movable rod can drive the column rod to move. The movement of the column rod can push the rotating sleeve to rotate through the sliding connection with the sliding groove on the rotating sleeve, so that the rotating sleeve can rotate back and forth during the reciprocating movement of the piston plates. After the cold air enters between the two piston plates, the reciprocating rotation of the rotating plates can evenly disperse the cold air, so that the cold air can be evenly distributed in the cavity, avoiding direct discharge of the cold air after entering the cavity, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the liquid cooling plate of the present invention;

[0024] Figure 3 It is a schematic diagram of the local structure of the liquid cooling plate of the present invention;

[0025] Figure 4 This is a schematic structural diagram of the liquid cooling plate of the present invention from another perspective;

[0026] Figure 5 It is a schematic diagram of the limit frame structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the partition frame installation structure of the present invention;

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of area A in the middle

[0029] Figure 8 Schematic diagram of the partition frame structure of the present invention

[0030] Fig. 9 Schematic diagram of the local structure inside the partition frame of the present invention

[0031] Fig.10 The schematic diagram of the internal side view of the partition frame of the present invention is

[0032] Fig.11 Schematic diagram of the structure of the rotating sleeve of the present invention.

[0033] In the figure: 1. upper shell; 2. battery module; 3. limit frame; 4. thermal conductive glue; 5. liquid cooling plate; 6. lower shell; 7. thermal insulation cotton; 8. fixed plate; 9. partition frame; 10. slide groove; 11. limit block; 12. vertical groove; 13. piston plate; 14. one-way valve 1; 15. slider; 16. through hole; 17. one-way valve 2; 18. extension plate; 19. reset spring 1; 20. reset spring 2; 21. connecting cylinder; 22. drain pipe; 23. liquid inlet pipe; 24. liquid inlet main pipe; 25. drain main pipe; 26. U-shaped liquid cooling pipe; 27. rotating sleeve; 28. movable rod; 29. ​​rotating plate; 30. column rod; 31. sliding groove. DETAILED DESCRIPTION

[0034] 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 implementation regulations described 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.

[0035] See also Figure 1-Figure 11The present invention provides a technical solution: a CTP module-free battery pack for new energy vehicles, comprising an upper shell 1, a battery module 2, a limit frame 3 for limiting the battery module 2, a thermally conductive adhesive 4, a liquid cooling plate 5, thermal insulation cotton 7 and a lower shell 6. If the liquid cooling plate 5 and the thermally conductive adhesive 4 are arranged below and on the side of the battery module 2, in addition to playing a heat dissipation role, they can also fix the position of the battery cell to a certain extent. The viscosity of the thermally conductive adhesive 4 can make the battery cell have a certain adhesion with the liquid cooling plate 5 or other adjacent components, reducing the looseness of the battery cell. When the battery cell tries to move, it needs to overcome the adhesive force of the thermally conductive adhesive 4, thereby achieving a certain degree of constraint. The upper shell 1 and the lower shell 6 surround the entire battery module 2 to form a closed space. This enclosing structure itself plays an overall constraint role on the battery cell, preventing the battery cell from escaping from the battery pack. At the same time, the thermal insulation cotton 7 around the battery module 2 can also fill the space to a certain extent, reduce the shaking space of the battery cell, and play an auxiliary constraint role. The invention also includes: a fixing plate 8 is symmetrically fixed on the inner side of the limit frame 3, and a slide groove 10 is opened on the inner side of the fixing plate 8 along its length direction, and a vertical groove 12 is opened on the top of the bottom end of the slide groove 10, and a connecting cylinder 21 is connected at the connection between the vertical groove 12 and the slide groove 10, and a reset spring 20 is installed inside the connecting cylinder 21, and the reset spring 20 is connected to a limit block 11 in an equilateral trapezoid, wherein the inner side of the limit frame 3 is also slidably connected to a partition frame 9 for blocking the battery, and both ends of the partition frame 9 are fixedly connected to the vertically movable partition frame 9. The slider 15 slides inside the groove 12 and the slide groove 10, and the inner side of the partition frame 9 is symmetrically and slidably connected with the piston plate 13, and the piston plate 13 is evenly spaced with through holes 16, wherein the two sides of the piston plate 13 are fixedly connected with extension plates 18 extending to the inside of the two sides of the partition frame 9, and the two symmetrically arranged extension plates 18 are connected by a reset spring 19, and the piston plate 13 on the inner side of the partition frame 9 is connected by the extension plate 18 and the reset spring 19. This structure can provide a certain buffer and restraint when the battery cell expands or is subjected to lateral force. The through holes 16 on the piston plate 13 also help to balance the internal pressure, make the environment around the battery cell more stable, and indirectly restrain the battery cell, which can prevent the temperature between the batteries from being too high, improve the heat dissipation effect, and enhance practicality.

[0036] The air holes at the upper and lower ends of the partition frame 9 are respectively equipped with a one-way valve 14 and a one-way valve 2 17, which are convenient for the entry of cold air 2 and the discharge of hot air. The bottom of the liquid cooling plate 5 is evenly spaced along its width direction, and the ends of the U-shaped liquid cooling tube 26 are respectively provided with a liquid inlet main pipe 24 and a liquid discharge main pipe 25 in the upper and lower layers, so that the liquid cooling plate 5 can generate cold air through the flow of liquid. The liquid inlet main pipe 24 and the liquid discharge main pipe 25 are respectively connected to the liquid inlet pipe 23 and the liquid discharge pipe 22, which is convenient for the reflux of the coolant. One side of the piston plate 13 is symmetrically rotated and connected to a rotating sleeve 27, and the inside of the rotating sleeve 27 A movable rod 28 is slidably connected, and the movable rod 28 is fixedly connected to the piston plate 13 on the other side, so that the rotating sleeve 27 can rotate on one side of the piston plate 13, and rotating plates 29 are symmetrically installed on both sides of the rotating sleeve 27, and column rods 30 are symmetrically installed on the outer lower part of the movable rod 28, and sliding grooves 31 are symmetrically opened on both sides of the rotating sleeve 27, and the column rods 30 are slidably connected to the sliding grooves 31, so that the movement of the piston plate 13 can drive the movable rod 28 to slide inside the rotating sleeve 27, and the sliding grooves 31 are inclined on the rotating sleeve 27, so that the movement of the movable rod 28 can drive the rotating sleeve 27 to rotate.

[0037] The liquid cooling plate 5 is fixedly connected to the lower shell 6 by bolts, and the bolts are evenly distributed at the edge of the liquid cooling plate 5 to ensure that the connection between the liquid cooling plate 5 and the lower shell 6 is firm and tight, and prevent the liquid cooling plate 5 from being displaced or loosened due to vibration during driving of the car. The upper shell 1 and the liquid cooling plate 5 are sealed by a sealing strip, and the sealing strip surrounds the upper edge of the liquid cooling plate 5. When the upper shell 1 is closed, the sealing strip prevents dust, moisture and impurities from entering the battery pack.

[0038] Working principle: Before using this new energy vehicle CTP module-free battery pack, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Fig.11As shown, the partition frame 9 is assembled to the inner side of the limit frame 3 through the cooperation between the slider 15 on the partition frame 9 and the vertical groove 12 and the slide groove 10. The number of partition frames 9 can be appropriately inserted and adjusted according to the size of the battery, and the partition frame 9 and the two piston plates 13 slidably connected inside the partition frame 9 are used to replace the spacer. At the same time, it is explained that a certain cavity is formed between the two piston plates 13, and through holes 16 are evenly opened on the two piston plates 13, so that the heat dissipated between the batteries can enter the cavity formed between the two piston plates 13 through the through holes 16, thereby preventing the temperature between the batteries from being too high and improving the heat dissipation effect. When the vehicle shakes during driving, such as braking, going uphill or downhill, or driving on uneven roads, the battery will drive the piston plate 13 to slide inside the partition frame 9, squeezing the return spring 19 at the same time. Since the side of the battery blocks the through hole 16, the hot air entering the cavity will be discharged through the one-way valve 14 on the top of the partition frame 9 during the sliding of the piston plate 13, further improving the heat dissipation effect of the battery. At the same time, the piston plate 13 on the inner side of the partition frame 9 is connected to the return spring 19 through the extension plate 18. This structure can provide a certain buffer and restraint when the battery cell expands or is subjected to lateral force. The through hole 16 on the piston plate 13 also helps to balance the internal pressure, making the environment around the battery cell more stable, and indirectly constraining the battery cell. At the same time, the one-way valve 17 at the bottom of the partition frame 9 is used to draw the cold air at the bottom of the battery during the reciprocating sliding of the piston plate 13. The cold air is generated because the liquid cooling plate 5 is installed at the bottom of the battery module 2 and sucked into the cavity. The effect of breathing is used to further improve the heat dissipation effect of the battery. The cold water enters the liquid inlet main pipe 24 from the liquid inlet pipe 23 and then enters the U-shaped liquid cooling pipe 26 arranged at equal intervals, thereby dissipating the heat of the battery module 2. Then, the cold water enters the drain main pipe 25 from the U-shaped liquid cooling pipe 26 and is discharged from the drain pipe 22, so that the cold water takes out the heat during the flow process, thereby achieving the effect of liquid cooling and heat dissipation.

[0039] When the car is driving, the two piston plates 13 move back and forth close to each other. During the movement of the two piston plates 13, the movable rod 28 moves inside the rotating sleeve 27. After the movement, the movable rod 28 can drive the column rod 30 to move. The column rod 30 moves through the sliding connection with the sliding groove 31 on the rotating sleeve 27, which can push the rotating sleeve 27 to rotate, so that the rotating sleeve 27 can rotate back and forth during the reciprocating movement of the piston plate 13. After entering between the two piston plates 13, the cold air can be evenly discharged through the reciprocating rotation of the rotating plate 29, so that the cold air can be evenly distributed in the cavity, avoiding the cold air from being directly discharged after entering the cavity, thereby improving the heat dissipation efficiency.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CTP module-free battery pack for a new energy vehicle, comprising an upper housing (1), a battery module (2), a limit frame (3) for limiting the position of the battery module (2), a thermal conductive adhesive (4), a liquid cooling plate (5), thermal insulation cotton (7) and a lower housing (6); It is characterized in that Also includes: A fixing plate (8) is symmetrically fixed on the inner side of the limit frame (3), and a slide groove (10) is provided on the inner side of the fixing plate (8) along its length direction, and a vertical groove (12) is provided on the top of the bottom end of the slide groove (10), and a connecting tube (21) is connected at the connection between the vertical groove (12) and the slide groove (10), and a return spring (20) is installed inside the connecting tube (21), and the return spring (20) is connected to a limit block (11) in the shape of an equilateral trapezoid; The inner side of the limit frame (3) is also slidably connected to a partition frame (9) for isolating the battery, and both ends of the partition frame (9) are fixedly connected to sliders (15) that can slide along the vertical groove (12) and the inner side of the slide groove (10), and the inner side of the partition frame (9) is symmetrically and slidably connected to a piston plate (13), and the piston plate (13) is provided with through holes (16) at equal intervals; Wherein, the two sides of the piston plate (13) are fixedly connected with extension plates (18) extending to the inside of the two sides of the partition frame (9), and the two symmetrically arranged extension plates (18) are connected via a return spring (19); The liquid cooling plate (5) and the lower shell (6) are fixedly connected by bolts, and the bolts are evenly distributed at the edge of the liquid cooling plate (5), so as to ensure that the connection between the liquid cooling plate (5) and the lower shell (6) is firm and tight, and prevent the liquid cooling plate (5) from being displaced or loosened due to vibration during the driving of the vehicle. The upper shell (1) and the liquid cooling plate (5) are sealed by a sealing strip, and the sealing strip surrounds the upper edge of the liquid cooling plate (5). When the upper shell (1) is closed, the sealing strip prevents dust, moisture and impurities from entering the battery pack.

2. A new energy vehicle CTP module-free battery pack according to claim 1, characterized in that: One-way valve 1 (14) and one-way valve 2 (17) are respectively installed at the air holes opened at the upper and lower ends of the partition frame (9).

3. A new energy vehicle CTP module-free battery pack according to claim 1, characterized in that: The bottom of the liquid cooling plate (5) is provided with U-shaped liquid cooling pipes (26) at equal intervals along its width direction, and the ends of the U-shaped liquid cooling pipes (26) are provided with a liquid inlet main pipe (24) and a liquid discharge main pipe (25) in upper and lower layers, respectively.

4. A CTP module-free battery pack for new energy vehicles according to claim 3, characterized in that: The liquid inlet main pipe (24) and the liquid discharge main pipe (25) are respectively connected to a liquid inlet pipe (23) and a liquid discharge pipe (22).

5. The CTP module-free battery pack for new energy vehicles according to claim 1, characterized in that: One side of the piston plate (13) is symmetrically rotatably connected to a rotating sleeve (27), and the interior of the rotating sleeve (27) is slidably connected to a movable rod (28), and the movable rod (28) is fixedly connected to the piston plate (13) on the other side.

6. A CTP module-free battery pack for new energy vehicles according to claim 5, characterized in that: Rotating plates (29) are symmetrically installed on both sides of the rotating sleeve (27), and pillars (30) are symmetrically installed on the outer lower part of the movable rod (28). Sliding grooves (31) are symmetrically opened and penetrated on both sides of the rotating sleeve (27), and the pillars (30) are slidably connected to the sliding grooves (31).

7. A CTP module-free battery pack for new energy vehicles according to claim 6, characterized in that: The sliding groove (31) is arranged on the rotating sleeve (27) in an inclined manner.

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