Battery pack structure and new energy vehicle

Abstract

The utility model is suitable for the technical field of battery packs, and provides a battery pack structure and a new energy vehicle. According to the battery pack structure, a first magnet and a second magnet are arranged on the two opposite inner walls of a box body in the height direction, and a third magnet and a fourth magnet are arranged at the two opposite ends of a battery pack; the third magnet and the first magnet are oppositely arranged and have the same polarity on the opposite surfaces, the fourth magnet and the second magnet are oppositely arranged and have the same polarity on the opposite surfaces, and the displacement of the battery pack relative to the box body is limited in the height direction of the box body through the limiting assembly; according to the battery pack structure provided by the utility model, when the battery pack structure is bumped along the height direction of the box body, the battery pack is buffered through the repulsive force between the third magnet and the first magnet and the repulsive force between the fourth magnet and the second magnet, so that the battery pack is prevented from being damaged, and the magnets have very long service life due to the material characteristics of the magnets; therefore, the battery pack structure provided by the invention has relatively long service life.

Description

Technical Field

[0001] The present application belongs to the field of battery pack technology, and in particular relates to a battery pack structure and a new energy vehicle. Background Art

[0002] As the power source of new energy vehicles, battery packs often encounter bumps during vehicle driving, which causes the battery packs to vibrate greatly, causing the battery cells to swing up and down inside the battery packs, resulting in damage to the battery packs and reducing their service life.

[0003] Conventional battery pack buffering solutions use buffering materials such as metal springs, EPE foam and other materials, but these materials will age and fatigue as the usage time continues to increase and the usage environment changes, the buffering effect will be weakened, and the protection effect on the battery pack will deteriorate. Utility Model Content

[0004] The embodiments of the present application provide a battery pack structure and a new energy vehicle, which can solve the problem that the buffer material used in the existing battery pack structure is easily aged and fails, resulting in a short battery life of the new energy vehicle.

[0005] The present application provides a battery pack structure, including:

[0006] The box body has a first magnet and a second magnet respectively disposed on two opposite inner walls in the height direction;

[0007] A battery pack is disposed in the box, and a third magnet and a fourth magnet are respectively disposed at opposite ends of the battery pack in the height direction, the third magnet is disposed opposite to the first magnet, and the polarity of the third magnet and the first magnet facing each other is the same, and the fourth magnet is disposed opposite to the second magnet, and the polarity of the fourth magnet and the second magnet facing each other is the same; and

[0008] The limiting assembly is used to limit the movement direction of the battery pack relative to the box body to the height direction of the box body.

[0009] Optionally, the limiter assembly includes:

[0010] A limit rod is disposed in the box body, the length direction of the limit rod is parallel to the height direction of the box body, and both ends of the limit rod are respectively connected to two opposite inner walls of the box body in the height direction; and

[0011] The linear bearing is arranged on the battery pack and is slidably connected with the limit rod.

[0012] Optionally, the third magnet and the fourth magnet are both electromagnets.

[0013] Optionally, the battery pack structure also includes an external control device, and the power lines of the third magnet and the fourth magnet are electrically connected to the external control device respectively, and the external control device is used to control the magnetic force of the third magnet and the fourth magnet.

[0014] Optionally, the battery pack structure also includes a distance measuring sensor arranged in the box, which is used to monitor the distance between the third magnet and the first magnet and / or the distance between the fourth magnet and the second magnet, and transmit the measured distance information to an external control device.

[0015] Optionally, the battery pack structure also includes at least one damper, which is connected between the battery pack and the case, and the damper can absorb and dissipate energy when the battery pack is subjected to vibration and reciprocating shear deformation along the height direction of the case.

[0016] Optionally, buffers are provided around the first magnet, the second magnet, the third magnet and the fourth magnet.

[0017] Optionally, the buffer is an annular EPE foam, and the first magnet, the second magnet, the third magnet and the fourth magnet are respectively embedded in the EPE foam around it.

[0018] An embodiment of the present application also provides a new energy vehicle, characterized in that it includes the above-mentioned battery pack structure.

[0019] The above solution of the present application has the following beneficial effects:

[0020] The battery pack structure provided by the present application is provided with a first magnet and a second magnet on two opposite inner walls in the height direction of the box, and a third magnet and a fourth magnet are provided at opposite ends of the battery pack. The third magnet is provided opposite to the first magnet and has the same polarity on the opposite surfaces, and the fourth magnet is provided opposite to the second magnet and has the same polarity on the opposite surfaces. The displacement of the battery pack relative to the box is limited in the height direction of the box by a limiting component, so that when the battery pack structure provided by the present application is subjected to bumps in the height direction of the box, the repulsive force between the third magnet and the first magnet and the repulsive force between the fourth magnet and the second magnet can buffer the battery pack and avoid damage. The magnet has a long service life due to its material characteristics and is difficult to fail. Therefore, the battery pack structure provided by the present application can have a long service life.

[0021] The new energy vehicle provided in the present application has a long battery pack service life due to the above-mentioned battery pack structure, which reduces the maintenance and repair costs of the battery.

[0022] Other beneficial effects of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of a battery pack structure provided in one embodiment of the present application;

[0025] Figure 2 A schematic structural diagram of a third magnet, a buffer and a linear bearing of a battery pack structure provided in one embodiment of the present application;

[0026] Figure 3 A schematic structural diagram of a battery pack structure with a damper added provided in one embodiment of the present application.

[0027] [Description of Reference Numerals]

[0028] 1. Box body; 2. Battery pack; 3. Limit assembly; 31. Limit rod; 32. Linear bearing; 4. First magnet; 5. Second magnet; 6. Third magnet; 7. Fourth magnet; 8. Resistance strain gauge; 9. Damper; 10. Buffer. DETAILED DESCRIPTION

[0029] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0030] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0031] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0033] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0034] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0035] The present application provides a battery pack structure, such as Figure 1 As shown, it includes: a box body 1, a battery pack 2 and a limiting assembly 3, wherein a first magnet 4 and a second magnet 5 are respectively arranged on two opposite inner walls of the box body 1 in the height direction; the battery pack 2 is arranged in the box body 1, and a third magnet 6 and a fourth magnet 7 are respectively arranged at opposite ends of the battery pack 2 in the height direction, the third magnet 6 is arranged opposite to the first magnet 4, and the polarity of the opposite surface of the third magnet 6 and the first magnet 4 is the same, the fourth magnet 7 is arranged opposite to the second magnet 5, and the polarity of the opposite surface of the fourth magnet 7 and the second magnet 5 is the same; and the limiting assembly 3 is used to limit the movement direction of the battery pack 2 relative to the box body 1 in the height direction of the box body 1.

[0036] The battery pack structure provided in the present application is provided with a first magnet 4 and a second magnet 5 on two opposite inner walls in the height direction of the box body 1, and a third magnet 6 and a fourth magnet 7 are provided at opposite ends of the battery pack 2. The third magnet 6 is arranged opposite to the first magnet 4 and the opposite surfaces have the same polarity, and the fourth magnet 7 is arranged opposite to the second magnet 5 and the opposite surfaces have the same polarity. The displacement of the battery pack 2 relative to the box body 1 is limited in the height direction of the box body 1 by the limiting component 3, so that when the battery pack structure provided in the present application is subjected to bumps along the height direction of the box body 1, the battery pack 2 is buffered and prevented from being damaged by the repulsive force between the third magnet 6 and the first magnet 4 and the repulsive force between the fourth magnet 7 and the second magnet 5. In addition, since the magnets have a long service life due to their material properties and are difficult to fail, the battery pack structure provided in the present application can have a long service life.

[0037] In some embodiments of the present application, Figure 1 As shown, the limit assembly 3 includes a limit rod 31 and a linear bearing 32. The limit rod 31 is arranged in the box body 1. The length direction of the limit rod 31 is parallel to the height direction of the box body 1. The two ends of the limit rod 31 are respectively connected to the two opposite inner walls of the box body 1 in the height direction; the linear bearing 32 is arranged on the battery pack 2 and is slidably connected to the limit rod 31.

[0038] In some embodiments of the present application, the above-mentioned linear bearing is arranged on the side wall in the width direction of the battery pack 2. In other embodiments of the present application, the above-mentioned limit rod 31 passes through the through hole on the battery pack 2 and is arranged in the box body 1, and the above-mentioned linear bearing 32 is arranged in the through hole and is slidably connected with the limit rod 31.

[0039] It can be understood that, in some embodiments, the above-mentioned limiting assembly 3 may include a slide groove and a slider, the slide groove is arranged on the inner wall of the box body 1 along the length direction of the box body 1, and the slider is arranged on a side wall of the battery pack 2 and is slidably connected to the slide groove.

[0040] The above-mentioned limit assembly 3 is used to limit the movement of the battery pack 2 relative to the box body 1 in the height direction of the box body 1, so that when the battery pack structure vibrates in the up and down directions, the battery pack 2 will move relative to the box body 1 along the height direction of the box body 1, and the third magnet 6 and the first magnet 4 as well as the fourth magnet 7 and the second magnet 5 will repel each other. When the third magnet 6 is too close to the first magnet 4, the repulsive force between the third magnet 6 and the first magnet 4 will be greater than the repulsive force between the fourth magnet 7 and the second magnet 5. Conversely, when the fourth magnet 7 is too close to the second magnet 5, the repulsive force between the fourth magnet 7 and the second magnet 5 will be greater than the repulsive force between the third magnet 6 and the first magnet 4, thereby buffering the battery pack 2.

[0041] In some embodiments of the present application, Figure 1As shown, the third magnet 6 and the fourth magnet 7 are both electromagnets.

[0042] The third magnet 6 and the fourth magnet 7 can facilitate the control of the magnetic force of the third magnet 6 and the fourth magnet 7, so that the magnetic force of the third magnet 6 and the fourth magnet 7 can be adjusted as needed to better buffer the battery pack 2.

[0043] In some embodiments of the present application, the battery pack structure also includes an external control device (not shown in the figure), and the power lines of the third magnet and the fourth magnet are respectively electrically connected to the external control device, and the external control device is used to control the magnetic force of the third magnet and the fourth magnet.

[0044] It can be understood that the above-mentioned external control device can be a control device such as a controller, a microcomputer or a computer, and the external control device can be a control device of the battery pack structure. When the battery pack structure is used for new energy vehicles, the above-mentioned external control device can also be a vehicle computer.

[0045] In some embodiments of the present application, the battery pack structure also includes a distance measuring sensor arranged in the box body 1, which is used to monitor the distance between the third magnet 6 and the first magnet 4 and / or the distance between the fourth magnet 7 and the second magnet 5, and transmit the measured distance information to an external control device.

[0046] The above-mentioned distance measuring sensor can measure the distance between the third magnet 6 and the first magnet 4 or the distance between the fourth magnet 7 and the second magnet 5, and transmit the measured distance information to the external control device. The external control device can determine the position of the battery pack 2 according to the received distance information, thereby adjusting the magnetic force of the third magnet 6 and the fourth magnet 7 so that the battery pack 2 can return to its original position more quickly, thereby providing buffering and shock-absorbing effects on the battery pack 2.

[0047] Illustratively, in some embodiments of the present application, the above-mentioned distance measuring sensor is a resistance strain gauge 8, which is a resistance strain gauge 8 covered on the limit rod 31 along the length direction of the limit rod 31, and the resistance strain gauge 8 is electrically connected to the external control device.

[0048] The above-mentioned resistance strain gauge 8 is used to measure the distance between the third magnet 6 and the first magnet 4, and the distance between the fourth magnet 7 and the second magnet 5. The measured displacement is converted into strain by means of the contact between the battery pack 2 and the same. The strain is then converted into a change in the resistance value of the sensor element by the resistance strain gauge 8. The change in resistance value is then converted into an electrical signal output such as a voltage signal and a current signal by a conversion circuit, thereby completing a one-to-one conversion from displacement to electrical quantity, thereby realizing electrical measurement of non-electrical quantity such as displacement.

[0049] Of course, in other embodiments, the distance measuring sensor may also be a laser distance measuring sensor.

[0050] In some embodiments of the present application, Figure 1 and 3 As shown, the battery pack structure also includes at least one damper 9, which is connected between the battery pack 2 and the box body 1. The damper 9 can absorb and dissipate energy when the battery pack 2 is subjected to vibration and reciprocating shear deformation along the height direction of the box body 1.

[0051] When the battery pack structure moves relative to the box body 1 under the action of external force, reciprocating motion may occur due to the action of the first magnet 4, the second magnet 5, the third magnet 6 and the fourth magnet 7. The damper 9 can absorb and dissipate the energy of the reciprocating motion to achieve a shock absorbing effect.

[0052] In some embodiments of the present application, Figures 1 to 3 As shown, a buffer member 10 is disposed around the first magnet 4 , the second magnet 5 , the third magnet 6 and the fourth magnet 7 .

[0053] The above-mentioned buffer component 10 is used to buffer the battery pack 2. When one or more of the first magnet 4, the second magnet 5, the third magnet 6 and the fourth magnet 7 fail, when the battery pack structure is vibrated by external forces, the buffer component 10 can buffer the battery pack 2 to avoid damage.

[0054] It is understandable that when the first magnet 4, the second magnet 5, the third magnet 6 or the fourth magnet 7 fails, the external control device can send an alarm message to remind the user to perform maintenance inspection.

[0055] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the buffer 10 is an annular EPE foam, and the first magnet 4, the second magnet 5, the third magnet 6 and the fourth magnet 7 are respectively embedded in the EPE foam around it.

[0056] The above-mentioned EPE foam can reduce impact force, effectively absorb and disperse external impact force, reduce the impact on the product, and reduce the damage rate; at the same time, the EPE foam has good softness and elasticity, and can protect the surface of the battery pack 2 from scratches and damage; in addition, it also has the characteristics of waterproof and moisture-proof, which can effectively prevent the product from being affected by moisture during transportation and keep the product dry; EPE foam is an environmentally friendly material, non-toxic and harmless, will not cause pollution to the product, and meets environmental protection requirements; in addition, it also has a long service life and can be reused many times, reducing resource waste and saving costs.

[0057] The present application also provides a new energy vehicle, comprising the battery pack structure described in any one of the above embodiments.

[0058] Since the above-mentioned new energy vehicle is provided with the battery pack structure included in the above-mentioned embodiment, the battery pack thereof has a longer service life, thereby reducing the maintenance and repair costs of the battery of the new energy vehicle.

[0059] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A battery pack structure, characterized in that: include: The box body has a first magnet and a second magnet respectively disposed on two opposite inner walls in the height direction; A battery pack is arranged in the box, and a third magnet and a fourth magnet are respectively arranged at opposite ends of the battery pack in the height direction, the third magnet is arranged opposite to the first magnet, and the polarity of the third magnet and the opposite surface of the first magnet are the same, and the fourth magnet is arranged opposite to the second magnet, and the polarity of the fourth magnet and the opposite surface of the second magnet are the same; a limiting assembly, used to limit the movement direction of the battery pack relative to the box body in the height direction of the box body; and At least one damper is connected between the battery pack and the case, and the damper can absorb and dissipate energy when the battery pack is subjected to vibration and reciprocating shear deformation along the height direction of the case.

2. The battery pack structure according to claim 1, characterized in that: The limiting component comprises: A limiting rod is disposed in the box body, the length direction of the limiting rod is parallel to the height direction of the box body, and two ends of the limiting rod are respectively connected to two opposite inner walls of the box body in the height direction; and A linear bearing is disposed on the battery pack and is slidably connected to the limiting rod.

3. The battery pack structure according to claim 1, characterized in that: The third magnet and the fourth magnet are both electromagnets.

4. The battery pack structure according to claim 3, characterized in that: The battery pack structure also includes an external control device, and the power lines of the third magnet and the fourth magnet are electrically connected to the external control device respectively, and the external control device is used to control the magnetic force of the third magnet and the fourth magnet.

5. The battery pack structure according to claim 4, characterized in that: The battery pack structure also includes a distance measuring sensor arranged in the box body, which is used to monitor the distance between the third magnet and the first magnet and / or the distance between the fourth magnet and the second magnet, and transmit the measured distance information to the external control device.

6. The battery pack structure according to claim 1, characterized in that: Buffering parts are arranged around the first magnet, the second magnet, the third magnet and the fourth magnet.

7. The battery pack structure according to claim 6, characterized in that: The buffer is an annular EPE foam, and the first magnet, the second magnet, the third magnet and the fourth magnet are respectively embedded in the EPE foam around them.

8. A new energy vehicle, characterized in that: A battery pack structure comprising any one of claims 1-7.

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