New energy battery pack protection structure

Abstract

The utility model discloses a new energy battery pack protection structure which comprises a battery pack shell, an anti-collision structure and a fireproof structure, the battery pack shell comprises a bottom shell, a condensation plate arranged on the inner bottom wall of the bottom shell, a battery pack arranged on the upper surface of the condensation plate and a top shell covering the upper surface of the bottom shell, the anti-collision structure is arranged on the surface of the battery pack shell, is used for protecting the battery pack shell and comprises a through hole formed in the upper surface of the bottom shell and a sliding rod slidably mounted on the inner wall of the through hole. By arranging the anti-collision structure, the mounting plate is mounted on an external automobile frame, so that the battery pack shell can be supported, when stone collides with the bottom shell during driving of an automobile, the bottom shell is stressed to move upwards relative to the mounting plate to buffer collision force, and a buffer spring is stressed to shrink, so that the battery pack shell is prevented from being damaged. Therefore, the problem that the bottom shell is damaged due to the fact that the stone impacts the bottom shell can be avoided, and the battery pack can be effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery pack especially relates to a new energy battery pack protection structure. BACKGROUND

[0002] The inside of the battery pack is composed of many small battery monomers through series and parallel connection, the battery series connection is to improve the voltage, and the battery parallel connection is to improve the capacity, and the battery monomer refers to a single independent lithium battery, a plurality of battery monomers are combined to become a module, and a plurality of modules are combined to finally form the battery pack.

[0003] China authorized publication number CN218939882U discloses a kind of new energy automobile battery pack protection structure, including shell, the inner side of shell is slidably provided with protective box, first sliding block is installed on the outer side of protective box, the inner side of shell is provided with first sliding slot, first sliding block is inserted into first sliding slot, damper is installed on the outer side of protective box, spring is sleeved on the outer side of damper, baffle is slidably provided in the inner side of protective box, positioning bolt is arranged in the side of protective box, and positioning bolt is screw-connected with baffle;Damper and spring facilitate protective box to be buffered, first sliding block and first sliding slot make protective box move stably in shell, baffle facilitates battery pack to be isolated, positioning bolt facilitates baffle to be fixed, as far as possible to solve the prior art battery pack is installed in protective structure, but the existing protective structure lacks buffering mechanism, when car chassis is jolted and impacted, prone to cause damage to battery pack Problem.

[0004] But the device has the following defects when in use: since the device fixes the shell on the frame, when the automobile chassis is impacted, the shell will be directly stressed, cannot buffer the impact force, thereby causing the shell to be damaged. In view of the above defects: therefore, we propose a new energy battery pack protection structure. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a new energy battery pack protection structure.

[0006] In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme: a new energy battery pack protection structure, comprising:

[0007] Battery pack shell, the battery pack shell includes bottom shell, condensation plate arranged on the inner bottom wall of bottom shell, battery pack arranged on the upper surface of condensation plate, and top shell covering the upper surface of bottom shell;

[0008] The anti-collision structure is arranged on the surface of the battery pack shell and is used for protecting the battery pack shell, comprising a through hole arranged on the upper surface of the bottom shell, a sliding rod slidingly arranged on the inner wall of the through hole, an assembling plate fixedly arranged on the lower end of the sliding rod, a buffer spring sleeved on the surface of the sliding rod, and a baffle fixedly arranged on the upper end of the sliding rod.

[0009] The fireproof structure is arranged above the top shell and is used for protecting the battery pack shell from fire.

[0010] Preferably, the fireproof structure comprises an installing plate fixedly arranged on the upper surface of the top shell, a protective shell fixedly arranged on the upper surface of the installing plate, a rubber film fixedly arranged on the inner wall of the protective shell, a nitrogen injection port fixedly arranged on the upper surface of the top shell, and an air inlet pipe and an air outlet pipe arranged on the upper surface of the installing plate respectively.

[0011] Preferably, the surface of the protective shell is screw-connected with an assembling bolt, and the surface of the installing plate is provided with a threaded hole matched with the assembling bolt.

[0012] Preferably, the inner wall of the protective shell is fixedly arranged with a protective net above the rubber film.

[0013] Preferably, the surfaces of the air inlet pipe and the air outlet pipe are provided with pressure relief valves respectively.

[0014] Preferably, one end of the buffer spring is fixedly connected with the lower surface of the baffle, and the other end of the buffer spring is fixedly connected with the upper surface of the bottom shell.

[0015] Preferably, the lower ends of the air inlet pipe, the air outlet pipe and the nitrogen injection port extend into the interior of the top shell.

[0016] Preferably, the number of the sliding rods is four, and the four sliding rods are arranged in a rectangular array on the upper surface of the bottom shell.

[0017] Compared with the prior art, the anti-collision structure has the following advantages:

[0018] 1. By arranging the anti-collision structure, the installing plate is arranged on the external automobile frame, so that the battery pack shell can be supported, and when the automobile is running and the bottom shell is hit by a stone, the bottom shell will move upward relative to the installing plate to buffer the impact force, and the buffer spring will be contracted, so that the problem of damage of the bottom shell caused by the stone hitting the bottom shell can be avoided, and the battery pack can be effectively protected.

[0019] 2、By setting fireproof structure, nitrogen gas injection port is used for injecting nitrogen into the battery pack shell, and the battery pack in the battery pack shell can be cooled by nitrogen, and when the battery pack generates heat during work, the pressure in the battery pack shell will become larger, at this time, the excess gas will enter the protective shell along the gas inlet pipe, and the rubber film will expand and deform to buffer the gas pressure, thereby effectively avoiding the problem of burning and damage of the battery pack caused by excessive pressure in the battery pack shell. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the present application, and the schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations. In the drawings:

[0021] Figure 1 It is a three-dimensional schematic view of the present application;

[0022] Figure 2 It is a three-dimensional schematic view of the bottom shell of the present application;

[0023] Figure 3 It is Figure 2 It is an enlarged schematic view of position A in the middle;

[0024] Figure 4 It is a three-dimensional schematic view of the top shell of the present application;

[0025] Figure 5 It is Figure 4 It is an enlarged schematic view of position B;

[0026] Figure 6 It is a front sectional view of the protective shell of the present application.

[0027] In the drawing, serial number: 10 bottom shell, 11 condensing plate, 12 battery pack, 13 top shell, 20 mounting plate, 21 protective shell, 22 rubber film, 23 gas inlet pipe, 24 exhaust pipe, 25 nitrogen gas injection port, 26 pressure relief valve, 30 assembly bolt, 40 protective net, 50 sliding rod, 51 mounting plate, 52 baffle, 53 buffer spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0029] Please refer to Figures 1-6 The present application provides a technical solution: a new energy battery pack protection structure, comprising: a battery pack shell, an anti-collision structure and a fireproof structure.

[0030] Please refer to Figure 1The battery pack shell comprises a bottom shell 10, a condensation plate 11 arranged on the inner bottom wall of the bottom shell 10, a battery pack 12 arranged on the upper surface of the condensation plate 11, and a top shell 13 covering the upper surface of the bottom shell 10.

[0031] Referring to Figures 1-3 The anti-collision structure is arranged on the surface of the battery pack shell for protecting the battery pack shell, which comprises a through hole arranged on the upper surface of the bottom shell 10, a sliding rod 50 slidingly arranged on the inner wall of the through hole, an assembly plate 51 fixedly arranged on the lower end of the sliding rod 50, a buffer spring 53 sleeved on the surface of the sliding rod 50, and a baffle 52 fixedly arranged on the upper end of the sliding rod 50.

[0032] The number of the sliding rods 50 is four, and the four sliding rods 50 are arranged in a rectangular array on the upper surface of the bottom shell 10. One end of the buffer spring 53 is fixedly connected with the lower surface of the baffle 52, and the other end of the buffer spring 53 is fixedly connected with the upper surface of the bottom shell 10. The assembly plate 51 is arranged on the external automobile frame, so as to support the battery pack shell.

[0033] When the automobile is running and the stone hits the bottom shell 10, the bottom shell 10 will move upward relative to the assembly plate 51 to buffer the impact force, and the buffer spring 53 will be contracted under the force, so as to avoid the problem that the stone hitting the bottom shell 10 causes the bottom shell 10 to be damaged due to the inability to buffer the impact force, thereby effectively protecting the battery pack 12. When the bottom shell 10 is separated from the stone, the buffer spring 53 will reset to reset the bottom shell 10.

[0034] Referring to Figures 4-6 The fireproof structure is arranged above the top shell 13 for preventing fire of the battery pack shell. The fireproof structure comprises a mounting plate 20 fixedly arranged on the upper surface of the top shell 13, a protective shell 21 fixedly arranged on the upper surface of the mounting plate 20, a rubber film 22 fixedly arranged on the inner wall of the protective shell 21, a nitrogen injection port 25 fixedly arranged on the upper surface of the top shell 13, and an air inlet pipe 23 and an air outlet pipe 24 arranged on the upper surface of the mounting plate 20, respectively.

[0035] The surface of the protective shell 21 is threadedly connected with an assembly bolt 30, and the surface of the mounting plate 20 is provided with a threaded hole matched with the assembly bolt 30. After the protective shell 21 is placed on the mounting plate 20, the assembly bolt 30 is tightened to mount the protective shell 21 on the mounting plate 20. Then, the nitrogen injection port 25 is used to inject nitrogen into the battery pack shell, and the nitrogen and the condensation plate 11 are used to cool the battery pack 12 in the battery pack shell.

[0036] The inner wall of the protective shell 21 is fixedly provided with a protective net 40, and the protective net 40 is above the rubber film 22, the rubber film 22 can be protected by the protective net 40, the surfaces of the air inlet pipe 23 and the air outlet pipe 24 are provided with pressure relief valves 26, and the lower ends of the air inlet pipe 23, the air outlet pipe 24 and the nitrogen injection port 25 extend to the inside of the top shell 13.

[0037] When the battery pack 12 works and generates heat, the pressure in the battery pack shell will become larger, at this time, the excess gas will enter the protective shell 21 along the air inlet pipe 23, and the rubber film 22 will be inflated and deformed to buffer the gas pressure, thereby effectively avoiding the problem that the battery pack 12 is burned and damaged due to the excessive pressure in the battery pack shell, and when the battery pack 12 stops working, the battery pack shell will be cooled, thereby the high-pressure gas in the protective shell 21 can be transported into the battery pack shell by the air outlet pipe 24, thereby the battery pack shell can be kept constant pressure.

[0038] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and concept of the present application, which should be covered in the protection scope of the present application.

Claims

1. A new energy battery pack protection structure, characterized in that, It includes: The battery package shell includes a bottom shell (10), a condensation plate (11) arranged on the inner bottom wall of the bottom shell (10), a battery package (12) arranged on the upper surface of the condensation plate (11), and a top shell (13) covering the upper surface of the bottom shell (10); The anti-collision structure is arranged on the surface of the battery package shell for protecting the battery package shell, which includes a through hole opened on the upper surface of the bottom shell (10), a sliding rod (50) slidingly installed on the inner wall of the through hole, an assembly plate (51) fixedly installed on the lower end of the sliding rod (50), a buffer spring (53) sleeved on the surface of the sliding rod (50), and a baffle (52) fixedly installed on the upper end of the sliding rod (50); The fireproof structure is arranged above the top shell (13) for fireproofing the battery package shell.

2. The new energy battery pack protection structure according to claim 1, characterized in that: The fireproof structure includes a mounting plate (20) fixedly installed on the upper surface of the top shell (13), a protective shell (21) fixedly installed on the upper surface of the mounting plate (20), a rubber film (22) fixedly installed on the inner wall of the protective shell (21), a nitrogen injection port (25) fixedly installed on the upper surface of the top shell (13), and an air inlet pipe (23) and an air outlet pipe (24) arranged on the upper surface of the mounting plate (20) respectively.

3. The new energy battery pack protection structure according to claim 2, characterized in that: The surface of the protective shell (21) is threadedly connected with an assembly bolt (30), and the surface of the mounting plate (20) is provided with a threaded hole matched with the assembly bolt (30).

4. The new energy battery pack protection structure according to claim 2, characterized in that: The inner wall of the protective shell (21) is fixedly installed with a protective net (40), and the protective net (40) is above the rubber film (22).

5. The new energy battery pack protection structure according to claim 2, characterized in that: The surfaces of the air inlet pipe (23) and the air outlet pipe (24) are provided with pressure relief valves (26).

6. The new energy battery pack protection structure according to claim 1, characterized in that: One end of the buffer spring (53) is fixedly connected with the lower surface of the baffle (52), and the other end of the buffer spring (53) is fixedly connected with the upper surface of the bottom shell (10).

7. The new energy battery pack protection structure according to claim 2, characterized in that: The lower ends of the air inlet pipe (23), the air outlet pipe (24) and the nitrogen injection port (25) extend to the inside of the top shell (13).

8. The new energy battery pack protection structure according to claim 1, characterized in that: The number of the sliding rods (50) is four, and the four sliding rods (50) are arranged in a rectangular array on the upper surface of the bottom shell (10).

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