Module protection structure, battery pack and electric device

Abstract

The utility model provides a module protection structure, a battery pack and an electric device, the module protection structure is used for protection of a BMS module in the battery pack, the protection structure comprises a module support, the BMS module is fixed on the module support through a fixing bolt; the protection plate comprises first plate bodies and a second plate body, the second plate body is clamped between the two first plate bodies, and the first plate bodies are provided with adaptive holes for the fixing bolts to penetrate through; when the BMS module is fixed to the module support through the fixing bolts, the protection plate is located above the BMS module so as to protect the BMS module. The module protection structure provided by the utility model is beneficial to improving the protection effect on the BMS module.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery pack, especially relates to a module protection structure. The utility model also relates to a battery pack with the module protection structure, and the utility model also relates to a power device with the battery pack. BACKGROUND

[0002] As the core component of electric vehicles or energy storage systems, the design and layout of battery packs directly affect the performance, safety and overall efficiency of vehicles or systems. Battery packs are usually integrated by multiple battery monomers or modules through precise electrical connection and thermal management system, and are packaged in a solid shell. According to different application scenarios and vehicle design requirements, the battery pack may be ingeniously arranged at multiple positions such as the bottom of the vehicle, under the seat, the trunk area and even the top of the vehicle, so as to achieve the best weight distribution, space utilization and endurance mileage.

[0003] Although the diversified installation positions of the battery pack provide flexibility for the overall vehicle layout, they also bring challenges to the integration and protection of the BMS (battery management system) module. As a key component for monitoring and managing the state of the battery pack, the accurate operation of the BMS module is crucial for ensuring the safety of the battery, optimizing energy output and prolonging the service life of the battery.

[0004] However, due to the diversity of the installation position of the battery pack, especially when the battery pack is compactly embedded in the vehicle structure, the top of the BMS module is often directly pressed or closely fitted by the battery pack shell. This physical compression may cause deformation of the BMS module circuit board, damage to the components, and even performance degradation or system failure, which seriously hinders the improvement of the protection effect of the BMS module. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a module protection structure to improve the protection effect of the BMS module.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A module protection structure for protecting the BMS module in the battery pack, the protection structure comprising:

[0008] A module support, the BMS module is fixed on the module support by fixing bolts;

[0009] A protection plate, the protection plate comprises first plate bodies and a second plate body, the second plate body is clamped between two first plate bodies, and the first plate body is provided with an adapter hole for the fixing bolt to pass through;

[0010] When the BMS module is fixed on the module support through the fixing bolt, the protective plate is located above the BMS module to constitute protection for the BMS module.

[0011] Further, the length of the first plate body is L, the width of the first plate body is W, the interval of the adaptive hole arranged along the length direction of the first plate body is A, and the interval of the adaptive hole arranged along the width direction of the first plate body is B; the relationship between the interval A of the adaptive hole arranged along the length direction of the first plate body and the length of the first plate body is L-A≥20mm; and the relationship between the interval B of the adaptive hole arranged along the width direction of the first plate body and the width of the first plate body is W-B≥20mm.

[0012] Further, the four corners of the first plate body are provided with chamfers, and the radius of the chamfer is 8mm≥R≥4mm.

[0013] Further, the second plate body is arranged in a wave shape, the outer diameter of the bending part of the second plate body is r1, the inner diameter of the bending part of the second plate body is r2, and the interval c of the vertexes of the two bending parts in the width direction of the second plate body is c=r1+r2.

[0014] Further, the distance b of the second plate body from the adaptive hole in the width direction of the first plate body is in the range of 0.5mm≥b≥0.2mm.

[0015] Further, the thickness r1-r2 of the second plate body is in the range of 0.5mm≤r1-r2≤1mm.

[0016] Further, the thickness t of the first plate body is in the range of 0.5mm-1mm, and the interval a of the two first plate bodies is in the range of a≥3t.

[0017] Further, the upper surface and the lower surface of the protective plate are both provided with a buffer layer.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The module protection structure can bear and fix the BMS module through the setting of the module support, the adaptive hole is set, the assembly of the protective plate above the BMS module is facilitated, the protective plate is set, can be assembled on the module support and constitutes the protection of the BMS module, is favorable for improving the protection effect of the BMS module, and is helpful for protecting the BMS module to facilitate the arrangement of the battery pack at different positions and improve the use quality of the battery pack.

[0020] In addition, the relationship between the pitch A of the adaptive hole arranged along the length direction of the first plate body and the length of the first plate body is L-A≥20mm, and the relationship between the pitch B of the adaptive hole arranged in the width direction of the first plate body and the width of the first plate body is W-B≥20mm, which is beneficial to guarantee the strength of the connection of the protective plate, improve the structural strength of the protective plate, and help design and implementation. The chamfer R≥4mm, which helps to prevent stress concentration, improves the structural strength of the protective plate, and is beneficial to design and implementation. The second plate body is arranged in a wave shape, which helps to improve the structural strength of the protective plate, and the structure is simple, which is beneficial to design and implementation.

[0021] In addition, the distance b of the second plate body from the adaptive hole in the width direction of the first plate body is b≥0.2mm, which facilitates the assembly of the second plate body between the two first plate bodies, has a simple structure, and is beneficial to design and implementation. The thickness r1-r2 of the second plate body is 0.5mm≤r1-r2≤1mm, which helps to improve the structural strength of the second plate body, provides good support effect, improves the structural strength of the protective plate, and is beneficial to design and implementation. The thickness of the first plate body is t, and the pitch a of the two first plate bodies is a≥3t, which can improve the energy absorption effect of the protective plate, help to improve the protection effect of the protective plate, and is beneficial to design and implementation. Through the setting of the buffer layer, the wear of the protective plate on the BMS module and the battery pack upper shell can be avoided, the service life of the protective plate can be improved, and the design and implementation are facilitated.

[0022] The utility model also proposes a battery pack, be equipped with the module protection structure as mentioned above in the battery pack.

[0023] The utility model also proposes a kind of electric device, be equipped with the battery pack as mentioned above in the electric device.

[0024] The battery pack and electric device described in the utility model have the same beneficial effects as the module protection structure described above compared with prior art, so no further description is made here. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings forming part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its description are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0026] Figure 1 The structure schematic view of the module protection structure described in the utility model embodiment is shown in the drawing of the utility model;

[0027] Figure 2 The Figure 1 enlarged view of A in the drawing of the utility model;

[0028] Figure 3The front view of the protective plate according to the embodiment of the present application;

[0029] Figure 4 The side view of the protective plate according to the embodiment of the present application;

[0030] Figure 5 The Figure 4 The enlarged view of A in the protective plate according to the embodiment of the present application;

[0031] Explanation of reference signs:

[0032] 1, module support;

[0033] 2, protective plate;

[0034] 201, first plate body; 202, second plate body; 203, adaptive hole;

[0035] 3, BMS module; 4, fixing bolt; 5, battery pack. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the description of the present application, it should be noted that if the terms indicating the orientation or position relationship such as "up", "down", "inner", "outer" appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application. The device or element must have a specific orientation, a specific orientation and operation, therefore it cannot be understood as a limitation on the present application. In addition, if the terms "first", "second" appear, they are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] Taking the battery pack where the module protection structure described in the present application is located as an example, the orientation words used in the embodiments such as "up, down, left, right, front, back" are defined based on the up-down direction (also called height direction, or the whole pack Z direction), left-right direction (also called width direction, or the whole pack Y direction) and front-back direction (also called length direction, or the whole pack X direction) of the battery pack. "Inner, outer" is defined based on the contour of the corresponding component, for example, "inner" and "outer" are defined based on the contour of the battery pack, the side close to the middle of the battery pack is "inner", and vice versa.

[0039] Moreover, in the description of the utility model, unless otherwise expressly limited, the terms "mounting", "connecting", "connection" and "connector" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.

[0040] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0041] Embodiment one

[0042] The embodiment relates to a module protection structure, so as to improve the protection effect of the BMS module 3 by optimizing the protection structure.

[0043] As a whole, as shown in the figure, Figures 1 to 5 The module protection structure in the embodiment is used for protecting the BMS module 3 in the battery pack 5, and the protection structure comprises a module support 1 and a protection plate 2.

[0044] The BMS module 3 is fixed on the module support 1 through fixing bolts 4, the protection plate 2 comprises first plate bodies 201 and a second plate body 202, the second plate body 202 is clamped between the two first plate bodies 201, and the first plate body 201 is provided with an adaptive hole 203 for the fixing bolt 4 to pass through.

[0045] When the BMS module 3 is fixed on the module support 1 through the fixing bolts 4, the protection plate 2 is located above the BMS module 3 to constitute protection for the BMS module 3.

[0046] As described above, the module protection structure in the embodiment can bear and fix the BMS module 3 through the setting of the module support 1, the adaptive hole 203 is set to facilitate the assembly of the protection plate 2 above the BMS module 3, the protection plate 2 can be assembled on the module support 1 and constitute protection for the BMS module 3 through the setting of the protection plate 2, which is conducive to improving the protection effect of the BMS module 3, protecting the BMS module 3, facilitating the arrangement of the battery pack 5 at different positions, and improving the use quality of the battery pack 5.

[0047] In the embodiment, as an exemplary structure, the module protection structure in the embodiment is assembled in the battery pack 5 and can protect the BMS module 3, especially in the case that the battery pack 5 is arranged at different positions and the upper shell of the battery pack 5 is easily pressed, at this time, the module protection structure in the embodiment can improve the protection effect of the top of the BMS module 3, and prevent the upper shell of the battery pack 5 from directly pressing the BMS module 3 to cause damage to the BMS module 3.

[0048] Specifically, the length of the first plate body 201 in the module protection structure in the embodiment is L, the width of the first plate body 201 is W, the spacing of the adaptive holes 203 arranged along the length direction of the first plate body 201 is A, and the spacing of the adaptive holes 203 arranged along the width direction of the first plate body 201 is B.

[0049] The relationship between the spacing A of the adaptive holes 203 arranged along the length direction of the first plate body 201 and the length of the first plate body 201 is L-A≥20 mm, and the relationship between the spacing B of the adaptive holes 203 arranged along the width direction of the first plate body 201 and the width of the first plate body 201 is W-B≥20 mm, so that the relationship between the spacing A of the adaptive holes 203 arranged along the length direction of the first plate body 201 and the length of the first plate body 201 is L-A≥20 mm, and the relationship between the spacing B of the adaptive holes 203 arranged along the width direction of the first plate body 201 and the width of the first plate body 201 is W-B≥20 mm, which is beneficial to guarantee the strength of the connection of the protection plate 2, improve the structural strength of the protection plate 2, and facilitate design implementation.

[0050] The length L and the width W of the first plate body 201 correspond to the length and the width of the BMS module 3 in a multiple relationship, respectively, L is 1.1-1.3 times the length of the BMS module 3, and W is 1.1-1.3 times the width of the BMS module 3, so that the length and the width of the first plate body 201 are slightly larger than the length and the width of the BMS module 3, which is beneficial to cover the first plate body 201 above the BMS module 3, and facilitates to improve the protection effect of the first plate body 201 on the BMS module 3.

[0051] More specifically, the four corners of the first plate body 201 in the embodiment are provided with chamfers, and the radius of the chamfer is 8 mm≥R≥4 mm. In the embodiment, the radius of the chamfer R may be, for example, 4 mm, 5 mm, 6 mm, 7 mm, or 8 mm, so that the radius of the chamfer is 8 mm≥R≥4 mm, which is beneficial to prevent stress concentration, improve the structural strength of the protection plate 2, and facilitate design implementation. The thickness of the first plate body 201 is t, and t is in the range of 0.5-1 mm. In the embodiment, t may be, for example, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm. The spacing a of the two first plate bodies 201 is in the range of a≥3t. So that the thickness of the first plate body 201 is t, and the spacing a of the two first plate bodies 201 is in the range of a≥3t, which can improve the energy absorption effect of the protection plate 2, improve the protection effect of the protection plate 2, and facilitate design implementation.

[0052] In addition, in order to better improve the structural strength of the protective plate 2, the second plate body 202 in the embodiment is arranged in a wave shape, the outer diameter of the bending portion of the second plate body 202 is r1, the inner diameter of the bending portion of the second plate body 202 is r2, and the distance c between the two bending portions of the second plate body 202 in the width direction of the second plate body 202 is r1+r2, so that the second plate body 202 is arranged in a wave shape, which helps to improve the structural strength of the protective plate 2, and the structure is simple and beneficial to design and implementation.

[0053] More specifically, the distance b between the second plate body 202 and the adapter hole 203 in the width direction of the first plate body 201 is in the range of 0.5mm≥b≥0.2mm, and in the embodiment, b may be 0.5mm, 0.4mm, 0.3mm or 0.2mm, for example, so that the distance b between the second plate body 202 and the adapter hole 203 in the width direction of the first plate body 201 is in the range of 0.5mm≥b≥0.2mm, facilitating the assembly of the second plate body 202 between the two first plate bodies 201, and the structure is simple and beneficial to design and implementation. The thickness r1-r2 of the second plate body 202 is in the range of 0.5mm≤r1-r2≤1mm. So that the thickness r1-r2 of the second plate body 202 is in the range of 0.5mm≤r1-r2≤1mm, which helps to improve the structural strength of the second plate body 202, provides good support effect, and is beneficial to improve the structural strength of the protective plate 2 and beneficial to design and implementation.

[0054] In addition, the upper surface and the lower surface of the protective plate 2 in the embodiment are both provided with a buffer layer, and through the arrangement of the buffer layer, the wear of the protective plate 2 and the BMS module 3 and the upper shell of the battery pack 5 can be avoided, which helps to improve the service life of the protective plate 2 and is beneficial to design and implementation. The buffer layer in the embodiment may be, for example, a buffer foam, and of course it can also be an insulating buffer material in the prior art such as rubber.

[0055] The module protection structure of the embodiment can improve the top protection effect of the BMS module 3 through the arrangement of the protective plate 2, thereby facilitating the change of the arrangement position of the battery pack 5 in the electrical device and the diversity of the arrangement position of the battery pack 5 in the electrical device.

[0056] Embodiment two

[0057] The embodiment relates to a battery pack provided with the module protection structure in the embodiment one.

[0058] The battery pack in the embodiment can improve the protection effect of the BMS module 3 through the arrangement of the module protection structure in the embodiment one, which helps to avoid the damage of the module caused by the extrusion of the cover plate on the BMS module 3 due to the change of the arrangement position of the battery pack, and is beneficial to the change of the arrangement position of the battery pack.

[0059] Embodiment three

[0060] The utility model relates to a kind of electric devices, and the electric device in the embodiment is provided with the battery pack in embodiment two.

[0061] The electric device in the embodiment, by the setting of the battery pack 5 in embodiment two, the battery pack can be arranged in multiple positions, which improves the use quality of the electric device.

[0062] The above only is the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A module protection structure for protection of a BMS module in a battery pack, characterized in that, The protection structure comprises: A module support, the BMS module is fixed on the module support through a fixing bolt; A protection plate, the protection plate comprises a first plate body and a second plate body, the second plate body is clamped between two first plate bodies, and the first plate body is provided with an adaptive hole for the fixing bolt to pass through; When the BMS module is fixed on the module support through the fixing bolt, the protection plate is located above the BMS module to form protection for the BMS module.

2. The module protection structure according to claim 1, wherein: The length of the first plate body is L, the width of the first plate body is W, the spacing of the adaptive holes arranged along the length direction of the first plate body is A, and the spacing of the adaptive holes arranged along the width direction of the first plate body is B; The relationship between the spacing A of the adaptive holes arranged along the length direction of the first plate body and the length of the first plate body is L-A≥20mm; The relationship between the spacing B of the adaptive holes arranged along the width direction of the first plate body and the width of the first plate body is W-B≥20mm.

3. The module protection structure according to claim 2, wherein: The four corners of the first plate body are each provided with a chamfer, and the radius of the chamfer is 8mm≥R≥4mm.

4. The module protection structure according to claim 1, wherein: The second plate body is arranged in a wave shape, the outer diameter of the bending portion of the second plate body is r1, the inner diameter of the bending portion of the second plate body is r2, and the spacing c of the two bending portions of the second plate body in the width direction of the second plate body is c=r1+r2.

5. The module protection structure according to claim 4, wherein: The distance b of the second plate body from the adaptive hole in the width direction of the first plate body is in the range of 0.5mm≥b≥0.2mm.

6. The module protection structure according to claim 4, wherein: The thickness r1-r2 of the second plate body is in the range of 0.5mm≤r1-r2≤1mm.

7. The module protection structure according to claim 1, wherein: The thickness t of the first plate body is in the range of 0.5mm-1mm, and the spacing a of the two first plate bodies is in the range of a≥3t.

8. The module protection structure according to any one of claims 1-7, wherein: The upper surface and the lower surface of the protection plate are each provided with a buffer layer.

9. A battery pack, comprising: The battery pack is provided with the module protection structure according to any one of claims 1-8.

10. An electric device, comprising: The electric device is provided with the battery pack according to claim 9.

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