A cascade battery management system for new energy vehicles

Abstract

The present invention discloses a cascade battery management system for new energy vehicles in the technical field of new energy vehicle batteries; the management system comprises a housing, a battery pack is fixedly connected to the interior of the housing, an alarm is fixedly connected to the housing, at least one telescopic rod is slidably connected between the housing and the battery pack, an electrical contact is arranged at the intersection of the telescopic rods, and a driving device is arranged on the side of the telescopic rod; if the battery pack expands due to the mutual squeezing of the batteries, the telescopic rod will shrink at the expanded position when the telescopic rod slides between the side wall of the battery pack and the inner wall of the housing, at which time the circuit between the telescopic rod and the alarm is connected, the alarm will sound, reminding the driver that the battery pack has expanded and leaked and is no longer able to provide power energy safely, and prompting the staff to replace it.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and in particular to a new energy vehicle cascade battery management system. Background Art

[0002] New energy vehicles usually use battery packs as a power source. The batteries of new energy vehicles are prone to expansion in high temperature environments. The expanded batteries will leak. If a slight expansion occurs, the human eye cannot directly observe it. The acid will corrode adjacent battery packs and battery components in the car. Since the battery is the power component of new energy vehicles, traffic accidents are likely to occur after a problem with the battery.

[0003] Based on this, the present invention designs a new energy vehicle cascade battery management system to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle cascade battery management system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cascade battery management system for new energy vehicles, comprising a box body, a battery pack is fixedly connected to the interior of the box body, an alarm is fixedly connected to the box body, at least one telescopic rod is slidably connected between the box body and the battery pack, an electrical contact is provided at the intersection of the telescopic rods, a driving device is provided on the side of the telescopic rod, and a heat dissipation device is provided on the battery pack, and the heat dissipation device drives the driving device to move forward and backward when driving the telescopic rod to dissipate heat for the battery pack to detect whether the battery pack is expanded.

[0006] As a further solution of the present invention, the driving device includes a first helical gear and a second helical gear, the threads of the first helical gear and the second helical gear are opposite, the first helical gear and the second helical gear are both slidably connected to the telescopic rod, the end of the telescopic rod is fixedly connected with a first gear, the first gear is meshed with a first rack, the first rack is fixedly connected to the battery pack, the side of the telescopic rod is provided with two push rods symmetrical about the box body for driving the first helical gear and the second helical gear to move left and right, the push rod is slidably connected to the box body; the push rod is fixedly connected with a first spring for its reset, the side of the push rod is provided with a first wedge block for driving it to move left and right, the first wedge block is fixedly connected to the telescopic rod, the first helical gear is meshed with a first toothed plate, the first toothed plate is slidably connected to the battery pack in the left and right directions, the first toothed plate is rotatably connected to a connecting rod, the lower surface of the connecting rod is rotatably and slidably connected to a support rod, the support rod is fixedly connected to the battery pack, the end of the connecting rod is rotatably connected to a crank rod, the lower end of the crank rod is rotatably connected to the battery pack, and the upper end of the crank rod is fixedly connected to a heat dissipation device.

[0007] As a further solution of the present invention, the heat dissipation device includes a first motor, the output shaft of the first motor is fixedly connected to a first fan blade, the rotating shaft of the first fan blade is fixedly connected to the crank rod, the outer surface of the battery pack is fixedly connected to a plurality of groups of condensers, and the outer surface of each of the condensers is slidably connected to a plurality of water absorbent blocks.

[0008] As a further solution of the present invention, the water absorption blocks on each of the condensation tubes are commonly fixedly connected to a push rod; a second spring for resetting is fixedly connected to the push rod, and a second wedge block for driving the push rod to move toward the side of the first fan blade is provided on the side of the push rod, and the second wedge block is fixedly connected to the first tooth plate.

[0009] As a further solution of the present invention, the alarm is electrically connected to the telescopic rod via a wire.

[0010] As a further solution of the present invention, a plurality of refrigeration plates arranged in a longitudinal direction are fixedly connected to the condenser tube.

[0011] As a further solution of the present invention, a buffer ball is fixedly connected to the water inlet end of the condenser tube, and the buffer ball is located between the refrigeration plates.

[0012] As a further solution of the present invention, both the front and rear sides of the first wedge block are provided with inclined surfaces.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The first fan blade circulates the air between the batteries in the battery pack and can also blow the cold air generated by the condenser tube into the batteries to cool the inside of the batteries, thereby ensuring that even if the battery pack is in a high temperature environment, the temperature inside the battery pack is relatively low. When the temperature inside and outside the battery pack is cooled, the service life of the battery pack in high temperature conditions is extended; the durability of the batteries in the battery pack is further ensured, and the batteries in the battery pack are prevented from swelling and leaking when they are in a high temperature environment for a long time.

[0015] The telescopic rod is driven to slide back and forth between the side wall of the battery pack and the inner wall of the box to detect whether the battery pack is deformed. The two ends of the telescopic rod can slide back and forth between the side wall of the battery pack and the inner wall of the box. Since the battery has not expanded in a normal state, the distance between the side wall of the battery pack and the inner wall of the box is constant and the distance between the telescopic rod and them is adapted. If the battery pack expands due to mutual squeezing of the batteries, the telescopic rod will shrink at the expanded position when sliding between the side wall of the battery pack and the inner wall of the box. At this time, the circuit between the telescopic rod and the alarm is connected, and the alarm will sound, reminding the driver that the battery pack has expanded and leaked and can no longer safely provide power energy, prompting the staff to replace it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention from the front and side;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the box body of the present invention from the front side;

[0018] Figure 3 A top view of the present invention;

[0019] Figure 4 It is a side view schematic diagram of the first helical gear, the second helical gear, the connecting rod, the supporting rod and other related structures of the present invention;

[0020] Figure 5 It is a schematic diagram of the meshing of the first helical gear and the first tooth plate of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] Box body 1, battery pack 2, alarm 3, telescopic rod 4, first helical gear 5, second helical gear 6, first wedge block 7, push rod 8, first tooth plate 9, first gear 10, first rack 11, connecting rod 12, support rod 13, crank rod 14, first fan blade 15, first motor 16, condenser 17, water absorption block 18, push rod 19, second spring 20, buffer ball 21, second wedge block 22, first spring 23, refrigeration plate 24. DETAILED DESCRIPTION

[0023] See also Figure 1-5 The present invention provides a technical solution: a cascade battery management system for new energy vehicles, comprising a box body 1, a battery pack 2 is fixedly connected to the inside of the box body 1, an alarm 3 is fixedly connected to the box body 1, at least one telescopic rod 4 is slidably connected between the box body 1 and the battery pack 2, an electrical contact is provided at the intersection of the telescopic rod 4, a driving device is provided on the side of the telescopic rod 4, and a heat dissipation device is provided on the battery pack 2. During the process of dissipating heat for the battery pack 2, the heat dissipation device drives the driving device to move the telescopic rod 4 back and forth to detect whether the battery pack 2 is expanded.

[0024] The driving device includes a first helical gear 5 and a second helical gear 6, the threads of the first helical gear 5 and the second helical gear 6 are opposite, the first helical gear 5 and the second helical gear 6 are both slidably connected to the telescopic rod 4, the end of the telescopic rod 4 is fixedly connected to a first gear 10, the first gear 10 is meshed with a first rack 11, and the first rack 11 is fixedly connected to the battery pack 2, and the side of the telescopic rod 4 is provided with two push rods 8 symmetrical with respect to the box body 1 for driving the first helical gear 5 and the second helical gear 6 to move left and right, and the push rod 8 is slidably connected to the box body 1; the push rod 8 is fixedly connected with a push rod for resetting it. A first spring 23, a first wedge block 7 for driving the push rod 8 to move left and right is arranged on the side of the push rod 8, the first wedge block 7 is fixedly connected to the telescopic rod 4, the first helical gear 5 is meshed with a first tooth plate 9, the first tooth plate 9 is slidably connected to the battery pack 2 in the left and right directions, the first tooth plate 9 is rotatably connected to the connecting rod 12, the lower surface of the connecting rod 12 is rotatably and slidably connected to the support rod 13, the support rod 13 is fixedly connected to the battery pack 2, the end of the connecting rod 12 is rotatably connected to the crank rod 14, the lower end of the crank rod 14 is rotatably connected to the battery pack 2, and the upper end of the crank rod 14 is fixedly connected to a heat dissipation device.

[0025] The heat dissipation device includes a first motor 16, the output shaft of the first motor 16 is fixedly connected to a first fan blade 15, the rotating shaft of the first fan blade 15 is fixedly connected to a crank rod 14, and the outer surface of the battery pack 2 is fixedly connected to a plurality of groups of condensers 17, and the outer surface of each of the condensers 17 is slidably connected to a plurality of water absorbent blocks 18.

[0026] The water absorption block 18 on each of the condensation tubes 17 is commonly fixedly connected to a push rod 19; a second spring 20 for resetting is fixedly connected to the push rod 19, and a second wedge block 22 for driving it to move toward the side of the first fan blade 15 is provided on the side of the push rod 19, and the second wedge block 22 is fixedly connected to the first tooth plate 9.

[0027] The alarm device 3 is electrically connected to the telescopic rod 4 via a wire.

[0028] In actual use of the present invention: the first motor 16 is started to rotate, the first motor 16 drives the first fan blade 15 to rotate, the first fan blade 15 blows wind into the gap between the battery pack 2, circulates the air between the batteries in the battery pack 2, and avoids local air overheating between the batteries, which causes battery leakage, and then starts the external water pump to circulate the water in the condenser 17. The water in the condenser 17 can absorb the hot air around the battery pack 2 and the battery pack 2, so that the peripheral temperature of the battery pack 2 is relatively low and constantly cooled. At the same time, the first fan blade 15 will blow the cold air around the condenser 17 to the battery pack 2. In the battery pack 2, while the first fan blade 15 circulates the air between the batteries in the battery pack 2, it can also blow the cold air generated by the condenser 17 into between the batteries to cool down the inside of the batteries, thereby ensuring that even if the battery pack 2 is in a high temperature environment, the temperature inside the batteries in the battery pack 2 is also in a relatively low environment. When the temperature inside and outside the battery pack 2 is cooled, the service life of the battery pack in high temperature conditions is extended; the durability of the batteries in the battery pack 2 is further ensured, and the batteries in the battery pack 2 are prevented from being in a high temperature environment for a long time, causing the batteries to swell and leak;

[0029] Then, during the rotation of the first fan blade 15, the crank rod 14 is driven to rotate, the crank rod 14 drives the connecting rod 12 to move left and right, the connecting rod 12 drives the first toothed plate 9 to move horizontally left and right, and the first toothed plate 9 drives the first helical gear 5 to rotate clockwise during the rightward movement, the first helical gear 5 drives the telescopic rod 4 to rotate, the telescopic rod 4 drives the first gear 10 to rotate, the first gear 10 rotates a certain angle on the first rack 11 to make the telescopic rod 4 move backward a distance, and then the crank rod 14 continues to rotate to drive the connecting rod 12 to move backward, driving the first toothed plate 9 to move left and back to the initial position, and then the crank rod 14 continues to rotate to drive the connecting rod 12 to move forward, and drives the first helical gear 5 to rotate again, so that the telescopic rod 4 continues to move backward, when the telescopic rod 4 moves to the rearmost end of the battery pack 2, the first wedge block 7 drives the push rod 8 to move right, and the push rod 8 pushes the first helical gear 5 to the right, and at the same time pushes the second helical gear 6 to move right and mesh with the first toothed plate 9, and the first toothed plate 9 drives the second helical gear 6 counterclockwise. The first wedge block 7 drives the push rod 8 to move left, and the push rod 8 pushes the second helical gear 6 to the left, and at the same time pushes the first helical gear 5 to move left and engage with the first tooth plate 9, so as to drive the telescopic rod 4 to slide back and forth between the side wall of the battery pack 2 and the inner wall of the box body 1, and detect whether the battery pack 2 is deformed. The two ends of the telescopic rod 4 can slide back and forth between the side wall of the battery pack 2 and the inner wall of the box body 1. Since the battery does not expand in a normal state, the distance between the side wall of the battery pack 2 and the inner wall of the box body 1 is constant and the distance between the telescopic rod 4 and the inner wall is adapted. If the battery pack 2 expands due to the mutual squeezing of the battery expansion, the telescopic rod 4 will shrink at the expansion point when sliding between the side wall of the battery pack 2 and the inner wall of the box body 1. At this time, the circuit between the telescopic rod 4 and the alarm 3 is connected, and the alarm 3 will sound an alarm, reminding the driver that the battery pack 2 has expanded and leaked, and no longer has the safety to provide power energy, and prompting the staff to replace it.

[0030] When the first tooth plate 9 drives the second wedge block 22 to reciprocate left and right, the second wedge block 22 can drive the push rod 19 to move forward and backward, and the push rod 19 drives the water absorption block 18 to move forward and backward. The water absorption block 18 can absorb the water vapor generated on the condenser 17 due to the large temperature difference, thereby preventing the water vapor from entering the battery pack 2. The batteries in the battery pack 2 absorb water vapor and affect their service life.

[0031] As a further solution of the present invention, a plurality of longitudinally arranged refrigeration plates 24 are fixedly connected to the condenser tube 17 ; the refrigeration plates 24 can ensure that the temperature of water entering the water inlet end is lowered again, thereby accelerating the heat absorption of the condenser tube 17 .

[0032] As a further solution of the present invention, a buffer ball 21 is fixedly connected to the water inlet end of the condenser 17, and the buffer ball 21 is located between the refrigeration plates 24; when working, the buffer ball 21 can ensure that more water is cooled in the buffer ball 21, thereby increasing the time for the water to be further cooled, and avoiding the water directly flowing too fast per unit time, and flowing away just after entering the refrigeration plate 24, which cannot achieve the ideal refrigeration effect.

[0033] As a further solution of the present invention, both the front and rear sides of the first wedge block 7 are provided with inclined surfaces.

[0034] Working principle: Start the first motor 16 to rotate, the first motor 16 drives the first fan blade 15 to rotate, the first fan blade 15 blows wind into the gap of the battery pack 2, circulates the air between the batteries in the battery pack 2, and avoids local air overheating between the batteries, which causes battery leakage, and then starts the external water pump to circulate the water in the condenser 17. The water in the condenser 17 can absorb the heat from the battery pack 2 and the surroundings of the battery pack 2, so that the peripheral temperature of the battery pack 2 is relatively low and constantly cooled. At the same time, the first fan blade 15 will blow the cold air around the condenser 17 to the battery pack 2. While the first fan blade 15 circulates the air between the batteries in the battery pack 2, it can also blow the cold air generated by the condenser 17 between the batteries to cool the inside of the batteries, thereby ensuring that even if the battery pack 2 is in a high temperature environment, the temperature inside the batteries in the battery pack 2 is also in a relatively low environment. When the temperature inside and outside the battery pack 2 is cooled, the service life of the battery pack in high temperature conditions is extended; the durability of the batteries in the battery pack 2 is further ensured, and the batteries in the battery pack 2 are prevented from being in a high temperature environment for a long time, causing the batteries to swell and leak;

[0035] Then, during the rotation of the first fan blade 15, the crank rod 14 is driven to rotate, the crank rod 14 drives the connecting rod 12 to move left and right, the connecting rod 12 drives the first toothed plate 9 to move horizontally left and right, and the first toothed plate 9 drives the first helical gear 5 to rotate clockwise during the rightward movement, the first helical gear 5 drives the telescopic rod 4 to rotate, the telescopic rod 4 drives the first gear 10 to rotate, the first gear 10 rotates a certain angle on the first rack 11 to make the telescopic rod 4 move backward a distance, and then the crank rod 14 continues to rotate to drive the connecting rod 12 to move backward, driving the first toothed plate 9 to move left and back to the initial position, and then the crank rod 14 continues to rotate to drive the connecting rod 12 to move forward, and drives the first helical gear 5 to rotate again, so that the telescopic rod 4 continues to move backward, when the telescopic rod 4 moves to the rearmost end of the battery pack 2, the first wedge block 7 drives the push rod 8 to move right, and the push rod 8 pushes the first helical gear 5 to the right, and at the same time pushes the second helical gear 6 to move right and mesh with the first toothed plate 9, and the first toothed plate 9 drives the second helical gear 6 counterclockwise. The first wedge block 7 drives the push rod 8 to move left, and the push rod 8 pushes the second helical gear 6 to the left, and at the same time pushes the first helical gear 5 to move left and engage with the first tooth plate 9, so as to drive the telescopic rod 4 to slide back and forth between the side wall of the battery pack 2 and the inner wall of the box body 1, and detect whether the battery pack 2 is deformed. The two ends of the telescopic rod 4 can slide back and forth between the side wall of the battery pack 2 and the inner wall of the box body 1. Since the battery does not expand in a normal state, the distance between the side wall of the battery pack 2 and the inner wall of the box body 1 is constant and the distance between the telescopic rod 4 and the inner wall is adapted. If the battery pack 2 expands due to the mutual squeezing of the battery expansion, the telescopic rod 4 will shrink at the expansion point when sliding between the side wall of the battery pack 2 and the inner wall of the box body 1. At this time, the circuit between the telescopic rod 4 and the alarm 3 is connected, and the alarm 3 will sound an alarm, reminding the driver that the battery pack 2 has expanded and leaked, and no longer has the safety to provide power energy, and prompting the staff to replace it.

Claims

1. A cascade battery management system for new energy vehicles, comprising a box (1), Features: A battery pack (2) is fixedly connected to the interior of the box (1), an alarm (3) is fixedly connected to the box (1), at least one telescopic rod (4) is slidably connected between the box (1) and the battery pack (2), an electrical contact is provided at the intersection of the telescopic rods (4), and the alarm (3) and the telescopic rod (4) are electrically connected via a wire; a driving device is provided on the side of the telescopic rod (4), and a heat dissipation device is provided on the battery pack (2); the heat dissipation device drives the driving device to move the telescopic rod (4) forward and backward during the process of dissipating heat for the battery pack (2) to detect whether the battery pack (2) is expanded; The driving device comprises a first helical gear (5) and a second helical gear (6), wherein the first helical gear (5) and the second helical gear (6) have opposite threads, and the first helical gear (5) and the second helical gear (6) are both slidably connected to the telescopic rod (4); the end of the telescopic rod (4) is fixedly connected to a first gear (10), the first gear (10) is meshed with a first rack (11), and the first rack (11) is fixedly connected to the battery pack (2); two push rods (8) are arranged on the side of the telescopic rod (4) and are symmetrical with respect to the box body (1) and are used to drive the first helical gear (5) and the second helical gear (6) to move left and right, and the push rods (8) are slidably connected to the box body (1); the push rods (8) are fixedly connected to a first gear for resetting the push rods (8); The push rod (8) is provided with a first spring (23) on its side for driving the push rod (8) to move left and right. The first wedge block (7) is fixedly connected to the telescopic rod (4). The first helical gear (5) is meshed with a first tooth plate (9). The first tooth plate (9) is slidably connected to the battery pack (2) in the left and right directions. The first tooth plate (9) is rotatably connected to a connecting rod (12). The lower surface of the connecting rod (12) is rotatably and slidably connected to a support rod (13). The support rod (13) is fixedly connected to the battery pack (2). The end of the connecting rod (12) is rotatably connected to a crank rod (14). The lower end of the crank rod (14) is rotatably connected to the battery pack (2). The upper end of the crank rod (14) is fixedly connected to a heat dissipation device.

2. A new energy vehicle cascade battery management system according to claim 1, Features: The heat dissipation device comprises a first motor (16), the output shaft of the first motor (16) is fixedly connected to a first fan blade (15), the rotating shaft of the first fan blade (15) is fixedly connected to a crank rod (14), the outer surface of the battery pack (2) is fixedly connected to a plurality of groups of condensing tubes (17), and the outer surface of each of the condensing tubes (17) is slidably connected to a plurality of water absorbing blocks (18).

3. A new energy vehicle cascade battery management system according to claim 2, Features: The water absorption block (18) on each of the condensing tubes (17) is fixedly connected to a push rod (19); a second spring (20) for resetting is fixedly connected to the push rod (19); a second wedge block (22) for driving the push rod (19) to move toward the first fan blade (15) is arranged on the side of the push rod (19); and the second wedge block (22) is fixedly connected to the first tooth plate (9).

4. A new energy vehicle cascade battery management system according to claim 3, Features: A plurality of refrigeration plates (24) arranged in a longitudinal direction are fixedly connected to the condenser tube (17).

5. A new energy vehicle cascade battery management system according to claim 4, Features: A buffer ball (21) is fixedly connected to the water inlet end of the condenser tube (17), and the buffer ball (21) is located between the refrigeration plates (24).

6. A new energy vehicle cascade battery management system according to claim 5, Features: The first wedge-shaped block (7) is provided with inclined surfaces on both the front and rear sides.

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