New energy lithium battery protection buffer device

Abstract

The utility model discloses a new energy lithium battery protection buffer device which is applied to a battery pack, a fixed shell is fixedly arranged on the outer side surface of the battery pack, and a protection mechanism used for buffering and protecting the battery pack is arranged at the lower end of the fixed shell. The protection mechanism comprises a first bottom plate, a second bottom plate, a first conductive film, a second conductive film, an alarm and a first wire, the first bottom plate is arranged at the lower end of the battery pack, the second bottom plate is fixedly arranged at the lower end of the first bottom plate, and the first conductive film is fixedly arranged at the lower end of the first bottom plate. The battery pack protection device is good in use effect, can play a role in protecting the battery pack through the protection mechanism so as to prevent the bottom of the battery pack from being collided, scratched and damaged, and can give an alarm in time once the protection mechanism deforms too much so as to prompt that the second bottom plate deforms too much; potential safety hazards caused by the fact that deformation of the second bottom plate extrudes the battery pack are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery protection, in particular to a new energy lithium battery protection buffer device. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source and integrate advanced technologies in vehicle power control and driving to form vehicles with advanced technical principles, new technologies, and new structures. In order to protect the batteries of new energy vehicles, the batteries of new energy vehicles are generally installed inside the battery compartment of new energy vehicles. In order to protect the battery pack from being hit by foreign objects on the ground, new energy vehicle owners often install a battery under-guard on the lower side of the battery compartment of the vehicle to protect the battery compartment.

[0003] However, it is unknown whether such battery under-guard plates in the prior art are severely damaged after being scratched or hit during use and need to be repaired. Moreover, since the guard plate is at the bottom of the vehicle, it is difficult for the owner to check the status of the guard plate. Thus, it is unknown whether the guard plate is deformed too much or whether the guard plate needs to be replaced. Therefore, an improved new energy lithium battery protection buffer device is needed to address this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a new energy lithium battery protection buffer device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new energy lithium battery protection buffer device, applied to a battery pack, a fixed shell is fixedly arranged on the outer surface of the battery pack, and a protection mechanism for buffering and protecting the battery pack is arranged at the lower end of the fixed shell, and the protection mechanism includes a first bottom plate, a second bottom plate, a first conductive film, a second conductive film, an alarm, and a first wire. The battery pack is provided with a first bottom plate at the lower end, a second bottom plate is fixedly arranged at the lower end of the first bottom plate, a first conductive film is fixedly arranged at the lower end of the first bottom plate, a second conductive film is fixedly arranged at the upper end of the second bottom plate, an alarm is fixedly arranged on the outer surface of the fixed shell, and a first wire is fixedly arranged on one side of the surface of the first conductive film and the second conductive film.

[0006] Preferably, the first conductive film, the first wire, the second conductive film and the alarm are electrically connected in series; the first conductive film and the second conductive film are equivalent to a switch, and when the first conductive film and the second conductive film contact each other, the circuit will be turned on, so that the alarm can be powered on to sound an alarm.

[0007] Preferably, a cavity is provided between the first bottom plate and the second bottom plate, and the interior of the cavity is a vacuum. The cavity can provide a certain buffer space between the first bottom plate and the battery pack. Since the second bottom plate is the first point to be impacted, a certain buffer space can be given to the second bottom plate. The vacuum environment inside the cavity can ensure the airtightness between the first bottom plate and the second bottom plate. If the second bottom plate is impacted, scratched or damaged, the failure of the airtightness may cause water accumulation and corrosion between the first bottom plate and the second bottom plate. However, due to the vacuum environment, it is easy to detect whether the second bottom plate is damaged.

[0008] Preferably, connecting blocks are fixedly provided at the four corners of the outer surfaces of the fixed shell and the second bottom plate, and locking screws are provided between the connecting blocks through threaded engagement. The second bottom plate and the first bottom plate can be fixed to the lower end of the fixed shell by passing the locking screws through the connecting blocks and tightening the threads. At this time, the first bottom plate and the second bottom plate are provided at the lower end of the fixed shell for protection, and there is a cavity between the second bottom plate and the first bottom plate; there can be a certain buffer space, that is, when the second bottom plate is deformed by impact, any slight deformation will be transmitted to the battery pack, causing the batteries inside the battery pack to be squeezed.

[0009] Preferably, a vacuum sensor is fixedly provided on one side of the surface of the second bottom plate, a second wire is fixedly provided between the vacuum sensor and the alarm, and the vacuum sensor is electrically connected to the alarm through the second wire; the vacuum sensor can detect whether the inside of the cavity is damaged, and once the pressure inside the damaged cavity changes, the vacuum sensor can detect it, and thus an alarm can be sounded through the alarm, so as to facilitate timely maintenance and inspection; and the protective mechanism can be replaced.

[0010] Preferably, the first conductive film and the second conductive film are respectively adhered and fixed to the first base plate and the second base plate by insulating glue. Since the first base plate and the second base plate require a certain structural strength, the first base plate and the second base plate are generally made of metal materials and are conductive. In this way, the insulating glue can be used to prevent the first conductive film and the second conductive film from forming a loop through the first base plate and the second base plate. At the same time, in order to ensure insulation, insulating paint can also be sprayed on the outer surfaces of the first base plate and the second base plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When the second bottom plate of the device of the utility model is deformed too much, it is very likely to squeeze the battery pack. When the second bottom plate of the device is impacted and deformed too much and bulges upward to produce a large deformation, the first conductive film and the second conductive film will contact each other. At this time, the first conductive film and the second conductive film are equivalent to a switch. When the first conductive film and the second conductive film contact each other, the circuit will be turned on, so that the alarm can be powered on to alarm. This prompts that the deformation of the second bottom plate is too large, and it is necessary to check in time to prevent the second bottom plate from deforming and squeezing the battery pack without being noticed, leaving a safety hazard.

[0013] 2. When the utility model is in use, if the second bottom plate is hit, scratched or damaged, the failure of airtightness may cause water accumulation and corrosion between the first bottom plate and the second bottom plate. Since the interior of the cavity is a vacuum environment, once the second bottom plate is damaged but the deformation is small, the negative pressure inside the cavity is lost, and the vacuum sensor can detect it, so that an alarm can be sounded through the alarm to facilitate timely maintenance and inspection, so that the protective mechanism can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a new energy lithium battery protection buffer device of the utility model;

[0015] Figure 2 This is an exploded view of a new energy lithium battery protection buffer device of the utility model;

[0016] Figure 3 This is an overall structural view of a protection mechanism in a new energy lithium battery protection buffer device of the utility model;

[0017] Figure 4 The utility model is a new energy lithium battery protection buffer device Figure 1 Bottom view of

[0018] Figure 5 The utility model is a circuit diagram of an alarm circuit in a new energy lithium battery protection buffer device.

[0019] In the figure: 1, battery pack; 2, fixed shell; 3, first bottom plate; 4, second bottom plate; 5, first conductive film; 6, second conductive film; 7, alarm; 8, first wire; 9, cavity; 10, connecting block; 11, locking screw; 12, vacuum sensor; 13, second wire. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 The utility model provides a technical solution: a new energy lithium battery protection buffer device, applied to a battery pack 1, a fixed shell 2 is fixedly arranged on the outer surface of the battery pack 1, and a protection mechanism for buffering and protecting the battery pack 1 is arranged at the lower end of the fixed shell 2, and the protection mechanism includes a first bottom plate 3, a second bottom plate 4, a first conductive film 5, a second conductive film 6, an alarm 7, and a first wire 8. The battery pack 1 is provided with a first bottom plate 3 at the lower end, and the second bottom plate 4 is fixedly arranged at the lower end of the first bottom plate 3. The first conductive film 5 is fixedly arranged at the lower end of the first bottom plate 3, and the second conductive film 6 is fixedly arranged at the upper end of the second bottom plate 4. The outer surface of the fixed shell 2 is fixedly provided with an alarm 7, and the first conductive film 5 and the first conductive film 6 are fixedly provided on one side of the surface.

[0022] The first conductive film 5, the first wire 8, the second conductive film 6, and the alarm 7 are electrically connected in series; the first conductive film 5 and the second conductive film 6 are equivalent to a switch, and when the first conductive film 5 and the second conductive film 6 are in contact with each other, the circuit is turned on, so that the alarm 7 can be powered on to sound an alarm;

[0023] A cavity 9 is provided between the first bottom plate 3 and the second bottom plate 4. The cavity 9 is vacuum. The cavity 9 allows a certain buffer space to be provided between the first bottom plate 3 and the battery pack 1. Since the second bottom plate 4 is the first point to be hit, a certain buffer space can be provided to the second bottom plate 4. The vacuum environment inside the cavity 9 can ensure the airtightness between the first bottom plate 3 and the second bottom plate 4. If the second bottom plate 4 is hit, scratched or damaged, the failure of airtightness may cause water accumulation and corrosion between the first bottom plate 3 and the second bottom plate 4. However, due to the vacuum environment, it is easy to detect whether the second bottom plate 4 is damaged.

[0024] The four corners of the outer surfaces of the fixed shell 2 and the second bottom plate 4 are fixedly provided with connecting blocks 10, and locking screws 11 are provided between the connecting blocks 10 through threaded engagement. The second bottom plate 4 and the first bottom plate 3 can be fixed to the lower end of the fixed shell 2 by passing the locking screws 11 through the connecting blocks 10 and tightening the threads. At this time, the lower end of the fixed shell 2 is provided with the first bottom plate 3 and the second bottom plate 4 for protection, and there is a cavity 9 between the second bottom plate 4 and the first bottom plate 3; there can be a certain buffer space, that is, when the second bottom plate 4 is deformed by impact, any slight deformation will be transmitted to the battery pack 1, causing the batteries inside the battery pack 1 to be squeezed;

[0025] A vacuum sensor 12 is fixedly arranged on one side of the surface of the second bottom plate 4, and a second wire 13 is fixedly arranged between the vacuum sensor 12 and the alarm 7, and the vacuum sensor 12 is electrically connected to the alarm 7 through the second wire 13; the vacuum sensor 12 can detect whether the cavity 9 is damaged, and once the pressure inside the damaged cavity 9 changes, the vacuum sensor 12 can detect it, so that an alarm can be issued through the alarm 7, so as to facilitate timely maintenance and inspection; and the protective mechanism can be replaced;

[0026] The first conductive film 5 and the second conductive film 6 are respectively adhered and fixed to the first base plate 3 and the second base plate 4 by insulating glue. Since the first base plate 3 and the second base plate 4 require a certain structural strength, the first base plate 3 and the second base plate 4 are generally made of metal materials and are conductive. In this way, the insulating glue can be used to prevent the first conductive film 5 and the second conductive film 6 from forming a loop through the first base plate 3 and the second base plate 4. At the same time, in order to ensure insulation, insulating paint can also be sprayed on the outer surfaces of the first base plate 3 and the second base plate 4.

[0027] Working principle: When using the device, the second bottom plate 4 and the first bottom plate 3 are fixed to the lower end of the fixed housing 2 by passing the locking screw 11 through the connecting block 10 and tightening the thread. At this time, the lower end of the fixed housing 2 is provided with the first bottom plate 3 and the second bottom plate 4 as protection, and there is a cavity 9 between the second bottom plate 4 and the first bottom plate 3; there can be a certain buffer space, that is, when the second bottom plate 4 is deformed by impact, any slight deformation will be transmitted to the battery pack 1, causing the batteries inside the battery pack 1 to be squeezed;

[0028] When the second bottom plate 4 is deformed too much, it is very likely to squeeze the battery pack 1. When the second bottom plate 4 is deformed too much by impact and bulges upward to produce a large deformation, the first conductive film 5 and the second conductive film 6 will contact each other. At this time, the first conductive film 5 and the second conductive film 6 are equivalent to a switch. When the first conductive film 5 and the second conductive film 6 contact each other, the circuit will be turned on, so that the alarm 7 can be powered on to alarm. In this way, it is prompted that the second bottom plate 4 is deformed too much, and it is necessary to check in time to prevent the second bottom plate 4 from deforming and squeezing the battery pack 1 without being noticed, leaving a safety hazard.

[0029] Furthermore, if the second bottom plate 4 is damaged by impact, scratch or other means during use of the device, failure of airtightness may cause water accumulation and corrosion between the first bottom plate 3 and the second bottom plate 4. Since the interior of the cavity 9 is a vacuum environment, once the second bottom plate 4 is damaged but the deformation is small, the negative pressure inside the cavity 9 is lost, and the vacuum sensor 12 can detect it, thereby sounding an alarm through the alarm 7, so as to facilitate timely maintenance and inspection, and replace the protective mechanism.

[0030] 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.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy lithium battery protection buffer device, applied to a battery pack (1), characterized in that: A fixed shell (2) is fixedly arranged on the outer surface of the battery pack (1); a protective mechanism for buffering and protecting the battery pack (1) is arranged at the lower end of the fixed shell (2); the protective mechanism comprises a first bottom plate (3), a second bottom plate (4), a first conductive film (5), a second conductive film (6), an alarm (7), and a first wire (8); a first bottom plate (3) is arranged at the lower end of the battery pack (1); a second bottom plate (4) is fixedly arranged at the lower end of the first bottom plate (3); a first conductive film (5) is fixedly arranged at the lower end of the first bottom plate (3); a second conductive film (6) is fixedly arranged at the upper end of the second bottom plate (4); an alarm (7) is fixedly arranged on the outer surface of the fixed shell (2); and a first wire (8) is fixedly arranged on one side of the surface of the first conductive film (5) and the second conductive film (6).

2. A new energy lithium battery protection buffer device according to claim 1, characterized in that: The first conductive film (5), the first conductive wire (8), the second conductive film (6), and the alarm (7) are electrically connected in series.

3. A new energy lithium battery protection buffer device according to claim 1, characterized in that: A cavity (9) is provided between the first bottom plate (3) and the second bottom plate (4), and the interior of the cavity (9) is a vacuum.

4. A new energy lithium battery protection buffer device according to claim 1, characterized in that: Connecting blocks (10) are fixedly arranged at the four corners of the outer surfaces of the fixed shell (2) and the second bottom plate (4), and locking screws (11) are arranged between the connecting blocks (10) through threaded engagement.

5. The new energy lithium battery protection buffer device according to claim 1, characterized in that: A vacuum sensor (12) is fixedly arranged on one side of the surface of the second bottom plate (4), a second wire (13) is fixedly arranged between the vacuum sensor (12) and the alarm (7), and the vacuum sensor (12) is electrically connected to the alarm (7) via the second wire (13).

6. A new energy lithium battery protection buffer device according to claim 1, characterized in that: The first conductive film (5) and the second conductive film (6) are respectively bonded and fixed to the first bottom plate (3) and the second bottom plate (4) by means of insulating glue.

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