Box body protection device for electric vehicle battery pack

Abstract

The utility model relates to the technical field of battery pack box body protection, and discloses a box body protection device for an electric automobile battery pack, which comprises a box body and a battery pack main body, the top of the box body is detachably connected with a cover body, and the inside of the box body is fixedly connected with a partition plate. A heat dissipation mechanism is arranged below the partition plate and located in the box body. According to the box body protection device for the electric vehicle battery pack, cooling liquid in the water tank is refrigerated through the refrigerating machine, then the water pump is started, and the refrigerated cooling liquid in the water tank is conveyed into the cooling circulating pipe through the conveying pipe; the cooling circulating pipe circularly converts heat energy in the box body, the heat energy flows back into the water tank through the backflow pipe to be cooled again, then the micro motor is started, the fan blows away cold energy through the first air holes, heat energy conversion is faster, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack box protection, in particular to a box protection device for an electric vehicle battery pack. Background Art

[0002] An electric vehicle is a vehicle that uses an onboard power source as its motive force, uses an electric motor to drive its wheels, and complies with all requirements of road traffic and safety regulations.

[0003] After searching, a Chinese patent discloses a battery pack protection device for electric vehicles (authorization announcement number CN216563397U). This patent technology sets a base at the angle between every four batteries, and a contact plate that contacts the batteries in the battery pack slides on the base, and then the contact plate can also be slightly away from the outer wall of the battery. In order to prevent the batteries from being squeezed close to each other when the vehicle collides, a top plate connected by an elastic reset member is provided on the sliding stroke of the contact plate. Then, when the batteries in the battery pack move relative to each other, each battery is squeezed against the contact plate, so that the contact plate applies force to the top plate, and a certain buffer is performed through the elastic reset member connected to the top plate, thereby weakening or even preventing the batteries in the battery pack from being squeezed against each other and damaged when the vehicle collides.

[0004] In actual applications, this technology helps to weaken or prevent the batteries in the battery pack from being squeezed and damaged by each other during a vehicle collision by providing a contact plate, an elastic reset part, and a top plate. However, the battery pack will generate a lot of heat during operation. This technology lacks effective heat dissipation function, so the heat of the battery pack will accumulate inside the protective device, which is prone to the risk of spontaneous combustion and explosion. Utility Model Content

[0005] The purpose of the utility model is to provide a box body protection device for an electric vehicle battery pack to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a box body protection device for an electric vehicle battery pack, comprising a box body and a battery pack body, the top of the box body is detachably connected to a cover body, the interior of the box body is fixedly connected to a partition, and a heat dissipation mechanism is provided below the partition and inside the box body;

[0007] The heat dissipation mechanism includes a water pump, a water tank is fixedly connected to the bottom of the partition and located inside the box body, a water pump is fixedly connected to one side of the water tank, one end of the water pump is fixedly connected to a delivery pipe, the other end of the water pump passes through the interior of the water tank, the end of the delivery pipe away from the water pump passes through the partition and is fixedly connected to a cooling circulation pipe, the end of the cooling circulation pipe away from the delivery pipe is fixedly connected to a return pipe, the bottom end of the return pipe passes through the partition and is fixedly connected to the water tank, a refrigerator is fixedly connected to the inside of the water tank, two protective shells are fixedly connected below the partition and located on one side of the water pump, a micro motor is fixedly connected to the inside of the protective shell, a fan is fixedly connected to the output end of the micro motor, a support plate is installed inside the box body and above the partition, a first air vent is provided inside the support plate and the partition, and second air vents are provided inside both sides of the box body.

[0008] Preferably, four fixed blocks are fixedly connected to the inner walls on both sides of the box body, a sliding rod is fixedly connected between every two of the fixed blocks, the outer sides of the sliding rods are symmetrically slidably connected to sliders, the outer sides of the sliding rods between the sliders and the fixed blocks are sleeved with second springs, rectangular plates are installed on both sides of the top of the support plate, the outer sides of the rectangular plates are symmetrically fixedly connected to mounting blocks, the outer sides of the sliders are hinged with oblique rods, and the oblique rods are hinged to the mounting blocks.

[0009] Preferably, the top of the partition is fixedly connected to two long frames, the tops of the long frames are fixedly connected to two columns, the insides of the columns are slidably connected to baffles, the bottom of the baffles and the inside of the columns are fixedly connected to a first spring, the top of the baffles is fixedly connected to a connecting rod, the connecting rod is slidably connected to the columns, the bottom of the support plate is fixedly connected to two bottom frames, and the bottom frames are fixedly connected to the connecting rods.

[0010] Preferably, two second protective pads are fixedly connected to the top of the support plate and the bottom of the cover body, and the second protective pads are arc-shaped.

[0011] Preferably, two first protection pads are fixedly connected to the top of the support plate and located on the inner side of the rectangular plate, and the first protection pads are rectangular in design.

[0012] Preferably, the number of the oblique rods is , and the oblique rods on the same side are symmetrical about the mounting block.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0014] 1. The utility model cools the coolant in the water tank by a refrigerator, then starts the water pump, and delivers the coolant in the water tank to the inside of the cooling circulation pipe through a delivery pipe, so that the cooling circulation pipe circulates and converts the heat energy in the box body, and then flows back to the inside of the water tank through the reflux pipe for cooling again, and then starts the micro motor to make the fan blow the cold through the first air hole, so that the heat energy conversion is faster and the heat dissipation efficiency is improved.

[0015] 2. The utility model, by means of the mounting block hitting the diagonal rod, causes the diagonal rod to push the slider to both sides, and then the slider squeezes the second spring, so that the second spring provides a buffer of lateral force to the battery pack body, which is beneficial to protecting the left and right sides of the battery pack body. The connecting rod drives the baffle downward and squeezes the first spring, providing a buffer of longitudinal force to the battery pack body through the first spring, which is beneficial to protecting the upper and lower sides of the battery pack body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial three-dimensional schematic diagram of the utility model;

[0017] Figure 2 It is a partial three-dimensional schematic diagram of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the utility model;

[0019] Figure 4 It is a partial three-dimensional schematic diagram of the utility model;

[0020] Figure 5 For this utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0021] Figure 6 It is a partially enlarged schematic diagram of the utility model.

[0022] Wherein: 1. box body; 2. cover body; 3. first protective pad; 4. support plate; 5. heat dissipation mechanism; 501. water pump; 502. refrigerator; 503. water tank; 504. delivery pipe; 505. cooling circulation pipe; 506. reflux pipe; 507. micro motor; 508. fan; 509. protective shell; 510. first air vent; 511. second air vent; 6. second protective pad; 7. battery pack body; 801. connecting rod; 802. column; 803. baffle; 804. first spring; 901. fixed block; 902. second spring; 903. slide bar; 904. diagonal rod; 905. mounting block; 906. slider; 10. base frame; 11. long frame; 12. partition; 13. rectangular plate. DETAILED DESCRIPTION

[0023] See also Figure 1-6A box body protection device for an electric vehicle battery pack comprises a box body 1 and a battery pack body 7, a cover body 2 is detachably connected to the top of the box body 1, a partition 12 is fixedly connected to the inside of the box body 1, and a heat dissipation mechanism 5 is arranged below the partition 12 and inside the box body 1;

[0024] The heat dissipation mechanism 5 includes a water pump 501. A water tank 503 is fixedly connected to the bottom of the partition 12 and located inside the box body 1. The water pump 501 is fixedly connected to one side of the water tank 503. One end of the water pump 501 is fixedly connected to a delivery pipe 504. The other end of the water pump 501 passes through the inside of the water tank 503. The end of the delivery pipe 504 away from the water pump 501 passes through the partition 12 and is fixedly connected to a cooling circulation pipe 505. The end of the cooling circulation pipe 505 away from the delivery pipe 504 is fixedly connected to a return pipe 506. The bottom end of the return pipe 506 passes through the partition 12. The plate 12 is fixedly connected to the water tank 503, and a refrigerator 502 is fixedly connected inside the water tank 503. Two protective shells 509 are fixedly connected below the partition 12 and on one side of the water pump 501. A micro motor 507 is fixedly connected inside the protective shell 509, and a fan 508 is fixedly connected to the output end of the micro motor 507. A support plate 4 is installed inside the box body 1 and above the partition 12. A first air hole 510 is opened inside the support plate 4 and the partition 12, and a second air hole 511 is opened inside both sides of the box body 1.

[0025] Specifically, when in use, the coolant inside the water tank 503 is cooled by the refrigerator 502, and then the water pump 501 is started to deliver the cooled coolant inside the water tank 503 to the inside of the cooling circulation pipe 505 through the delivery pipe 504, so that the cooling circulation pipe 505 circulates and converts the heat energy inside the box body 1, and then flows back to the inside of the water tank 503 through the reflux pipe 506 for further cooling, and then the micro motor 507 is started to make the fan 508 blow the cold air through the first air hole 510, so that the heat energy conversion is faster and the heat dissipation efficiency is improved.

[0026] Through the above technical scheme, four fixed blocks 901 are fixedly connected to the inner walls on both sides of the box body 1, a sliding rod 903 is fixedly connected between every two fixed blocks 901, and the outer sides of the sliding rods 903 are symmetrically slidably connected with sliders 906, and the outer sides of the sliding rods 903 between the sliders 906 and the fixed blocks 901 are sleeved with second springs 902, rectangular plates 13 are installed on both sides of the top of the support plate 4, and the outer sides of the rectangular plates 13 are symmetrically fixedly connected with mounting blocks 905, and the outer sides of the sliders 906 are hinged with inclined rods 904, and the inclined rods 904 are hinged to the mounting blocks 905.

[0027] Specifically, when the battery pack body 7 shakes left or right, the mounting block 905 hits the diagonal rod 904, causing the diagonal rod 904 to push the slider 906 to both sides, and then the slider 906 squeezes the second spring 902, causing the second spring 902 to provide a lateral force buffer for the battery pack body 7, which is beneficial to protecting the left and right sides of the battery pack body 7.

[0028] Through the above technical scheme, the top of the partition 12 is fixedly connected to two long frames 11, the top of the long frames 11 are fixedly connected to two columns 802, the inside of the column 802 is slidably connected to a baffle 803, the bottom of the baffle 803 and the inside of the column 802 is fixedly connected to a first spring 804, the top of the baffle 803 is fixedly connected to a connecting rod 801, the connecting rod 801 is slidably connected to the column 802, and the bottom of the support plate 4 is fixedly connected to two base frames 10, and the base frames 10 are fixedly connected to the connecting rod 801.

[0029] Specifically, when the battery pack body 7 encounters a bump and falls downward, the connecting rod 801 drives the baffle 803 downward and squeezes the first spring 804. The first spring 804 provides a longitudinal force buffer to the battery pack body 7, thereby helping to protect the upper and lower positions of the battery pack body 7.

[0030] Through the above technical solution, two second protection pads 6 are fixedly connected to the top of the support plate 4 and the bottom of the cover body 2, and the second protection pads 6 are arc-shaped.

[0031] Specifically, the second protective pad 6 is helpful to protect the upper and lower sides of the battery pack body 7 .

[0032] Through the above technical solution, two first protection pads 3 are fixedly connected to the top of the support plate 4 and located on the inner side of the rectangular plate 13. The first protection pads 3 are rectangular in design.

[0033] Specifically, the first protective pad 3 is beneficial for protecting the left and right sides of the battery pack body 7 .

[0034] Through the above technical solution, the number of the inclined rods 904 is 8, and the inclined rods 904 on the same side are symmetrical about the mounting block 905 .

[0035] Specifically, the inclined rod 904 is acted upon by a force which facilitates pushing the slider 906 to both sides to squeeze the second spring 902.

[0036] When in use, the battery pack body 7 is placed on the top of the support plate 4, and then the cover body 2 is fastened with bolts, and the coolant inside the water tank 503 is cooled by the refrigerator 502, and then the water pump 501 is started to send the cooled coolant inside the water tank 503 to the inside of the cooling circulation pipe 505 through the delivery pipe 504, so that the cooling circulation pipe 505 circulates and converts the heat energy inside the box body 1, and then flows back to the inside of the water tank 503 through the reflux pipe 506 for further cooling, and then the micro motor 507 is started, so that the fan 508 blows away the cold through the first air vent 510, so that the heat energy conversion is faster and the heat dissipation efficiency is improved.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A box body protection device for an electric vehicle battery pack, comprising a box body (1) and a battery pack body (7), characterized in that: The top of the box body (1) is detachably connected to a cover body (2), the interior of the box body (1) is fixedly connected to a partition plate (12), and a heat dissipation mechanism (5) is provided below the partition plate (12) and inside the box body (1); The heat dissipation mechanism (5) comprises a water pump (501); a water tank (503) is fixedly connected to the bottom of the baffle (12) and located inside the box body (1); a water pump (501) is fixedly connected to one side of the water tank (503); one end of the water pump (501) is fixedly connected to a delivery pipe (504); the other end of the water pump (501) passes through the inside of the water tank (503); an end of the delivery pipe (504) away from the water pump (501) passes through the baffle (12) and is fixedly connected to a cooling circulation pipe (505); an end of the cooling circulation pipe (505) away from the delivery pipe (504) is fixedly connected to a return pipe (506); the bottom end of the return pipe (506) passes through The partition (12) is fixedly connected to the water tank (503), the interior of the water tank (503) is fixedly connected to a refrigerator (502), two protective shells (509) are fixedly connected below the partition (12) and located on one side of the water pump (501), a micro motor (507) is fixedly connected inside the protective shell (509), and a fan (508) is fixedly connected to the output end of the micro motor (507), a support plate (4) is installed inside the box body (1) and located above the partition (12), a first air vent (510) is provided inside the support plate (4) and the partition (12), and second air vents (511) are provided inside both sides of the box body (1).

2. A box protection device for an electric vehicle battery pack according to claim 1, characterized in that: Four fixed blocks (901) are fixedly connected to the inner walls of both sides of the box body (1), a sliding rod (903) is fixedly connected between every two of the fixed blocks (901), the outer sides of the sliding rods (903) are symmetrically slidably connected to sliders (906), the outer sides of the sliding rods (903) between the sliders (906) and the fixed blocks (901) are sleeved with second springs (902), rectangular plates (13) are installed on both sides of the top of the support plate (4), the outer sides of the rectangular plates (13) are symmetrically fixedly connected to mounting blocks (905), the outer sides of the sliders (906) are hinged with inclined rods (904), and the inclined rods (904) are hinged to the mounting blocks (905).

3. The box protection device for an electric vehicle battery pack according to claim 1, characterized in that: The top of the partition (12) is fixedly connected to two long frames (11), the top of each of the long frames (11) is fixedly connected to two upright posts (802), a baffle (803) is slidably connected inside the upright post (802), a first spring (804) is fixedly connected at the bottom of the baffle (803) and located inside the upright post (802), a connecting rod (801) is fixedly connected to the top of the baffle (803), the connecting rod (801) is slidably connected to the upright post (802), and the bottom of the support plate (4) is fixedly connected to two bottom frames (10), the bottom frames (10) are fixedly connected to the connecting rod (801).

4. The box protection device for an electric vehicle battery pack according to claim 1, characterized in that: Two second protective pads (6) are fixedly connected to the top of the support plate (4) and the bottom of the cover body (2), and the second protective pads (6) are of arc-shaped design.

5. The box protection device for an electric vehicle battery pack according to claim 1, characterized in that: Two first protection pads (3) are fixedly connected to the top of the support plate (4) and located on the inner side of the rectangular plate (13), and the first protection pads (3) are of rectangular design.

6. A box protection device for an electric vehicle battery pack according to claim 2, characterized in that: The number of the oblique rods (904) is 8, and the oblique rods (904) on the same side are symmetrical about the mounting block (905).

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