Battery structure and battery pack for outdoor electric blanket

Abstract

The present disclosure provides a battery structure and a battery pack for an outdoor electric blanket, the battery structure for the outdoor electric blanket comprising a first battery pack, a second battery pack, a power line and a protective member; the protective member is provided with a mounting cavity, the first battery pack and the second battery pack are arranged in the mounting cavity, the protective member covers the outer surfaces of the first battery pack and the second battery pack, and the cavity wall of the mounting cavity is in close contact with the outer surfaces of the first battery pack and the second battery pack; the protective member is provided with a through hole, one end of the power line passes through the through hole and is connected to the first battery pack and the second battery pack respectively, and the other end of the power line is arranged at the side edge of the protective member; by arranging the protective member, and the protective member being provided with a splash-proof layer, high-temperature sparks and molten substances during explosion of the battery pack are effectively blocked, and the problem of explosion sparks and sputtering of the battery pack is solved.

Description

Technical Field

[0001] This disclosure relates to the technical field of electric blankets, and in particular to a battery structure for outdoor electric blankets. Background Technology

[0002] With the increasing popularity of outdoor activities, the demand for portable heating devices in camping, hiking, and other scenarios is becoming more urgent. Outdoor electric blankets, with their portability and warmth, have become essential equipment for many outdoor enthusiasts. However, the complex and changeable outdoor environment, with its large temperature fluctuations and susceptibility to impacts and pressure, poses serious safety challenges to the battery packs of electric blankets.

[0003] Currently, most outdoor electric blankets are powered by lithium battery packs. While lithium batteries have advantages such as high energy density and small size, they are prone to thermal runaway when subjected to severe impacts, punctures, or high-temperature environments, which can lead to the battery pack exploding. During the battery pack explosion, a large number of high-temperature sparks and molten material are ejected, which may not only ignite nearby tents, clothing, and other flammable items, causing property damage, but also pose a serious threat to the personal safety of the user.

[0004] In the existing technology, the safety protection of battery packs is mostly focused on circuit-level measures such as overcharge and over-discharge protection and temperature monitoring, or physical protection with metal casings to resist external impacts. However, there is no effective solution for the spark sputtering problem generated when the battery pack explodes. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a battery structure for outdoor electric blankets that prevents battery burst fire jets from splashing out.

[0006] The purpose of this disclosure is achieved through the following technical solution: A battery structure for an outdoor electric blanket includes a first battery pack, a second battery pack, a power cord, and a protective component. The protective component has a mounting cavity, in which the first and second battery packs are disposed. The protective component covers the outer surfaces of the first and second battery packs, and the cavity wall of the mounting cavity is in contact with the outer surfaces of the first and second battery packs. The protective component has a through hole, through which one end of the power cord passes and is connected to both the first and second battery packs, and the other end of the power cord is disposed on the side of the protective component.

[0007] In one embodiment, the outer surface of the protective member is covered with a splash-proof layer with a thickness of 0.01 to 0.02 mm, and the edges of the protective member are folded to form a sealed space for the mounting cavity.

[0008] In one embodiment, the battery structure for an outdoor electric blanket further includes a housing with an accommodating cavity, in which the first battery pack and the second battery pack are both disposed, and the protective member covers the housing.

[0009] In one embodiment, the aperture of the via is adapted to the outer diameter of the power line, and the wall of the via is in close contact with the outer surface of the power line.

[0010] In one embodiment, the protective member is provided with a first limiting part and a second limiting part. The first limiting part is provided at a first end of the protective member, and the second limiting part is provided at a second end of the protective member. Both the first limiting part and the second limiting part are provided in the mounting cavity. The first end of the housing abuts against the first limiting part, and the second end of the housing abuts against the second limiting part.

[0011] In one embodiment, the first battery pack and the second battery pack are arranged side by side in the accommodating cavity, with a gap between the first battery pack and the second battery pack, and the gap is filled with heat insulation cotton.

[0012] In one embodiment, the protective element is cylindrical in shape.

[0013] In one embodiment, the housing is a one-piece molded structure.

[0014] A battery pack comprising the battery structure for an outdoor electric blanket as described in any of the above embodiments.

[0015] Compared with the prior art, this disclosure has at least the following advantages: The protective component has mounting cavities, within which the first and second battery packs are housed. The protective component covers the outer surfaces of both battery packs, and because the walls of the mounting cavities are in close contact with the outer surfaces of both battery packs, the protective component effectively encloses them. The protective component also has through-holes through which one end of a power cord passes, connecting to both battery packs. The other end of the power cord is located on the side of the protective component, used to supply power to the electric blanket. During assembly, the first and second battery packs are first placed vertically into the mounting cavities of the protective component, ensuring a tight fit between the outer surfaces of the battery packs and the cavity walls. Then, a special adhesive is used to bond and secure the battery packs to the protective component, preventing loosening during use. Next, the power cord is passed through the through-holes and connected to the first and second battery packs with the correct polarity. Finally, the silicone sealing ring at the through-hole is tightened, completing the assembly of the entire battery structure. The anti-jet active battery structure for outdoor electric blankets in this embodiment, through the composite structure design of the protective components, can not only resist external impacts, but also effectively block the high-temperature sparks and molten material during battery pack explosion, solving the problem of battery pack explosion spark sputtering in the prior art and improving the safety of outdoor electric blankets. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded view of a battery structure for an outdoor electric blanket according to an embodiment of the present disclosure; Figure 2 This is a cross-sectional view of a battery structure for an outdoor electric blanket according to an embodiment of the present disclosure; Figure 3 This is a cross-sectional view of a protective member for a battery structure of an outdoor electric blanket according to an embodiment of the present disclosure; Figure 4 This is a physical diagram of a battery structure for an outdoor electric blanket according to an embodiment of the present disclosure; Reference numerals: 10, Battery structure for outdoor electric blanket; 100, First battery pack; 200, Second battery pack; 300, Power cord; 400, Protective component; 410, Splash-proof layer; 420, Mounting cavity; 430, First limiting part; 440, Second limiting part; 450, Through hole; 500, Housing; 510, Receiving cavity; 600, Insulation cotton. Detailed Implementation

[0018] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 4 As shown, a battery structure 10 for an outdoor electric blanket according to an embodiment is characterized by comprising a first battery pack 100, a second battery pack 200, a power cord 300, and a protective member 400; the protective member 400 has an installation cavity 420, the first battery pack 100 and the second battery pack 200 are disposed in the installation cavity 420, the protective member 400 covers the outer surfaces of the first battery pack 100 and the second battery pack 200, and the cavity wall of the installation cavity 420 is in contact with the outer surfaces of the first battery pack 100 and the second battery pack 200; the protective member 400 has a through hole 450, one end of the power cord 300 passes through the through hole 450 and is connected to the first battery pack 100 and the second battery pack 200 respectively, and the other end of the power cord 300 is disposed on the side of the protective member 400.

[0022] In this embodiment, the protective member 400 has a mounting cavity 420, and the first battery pack 100 and the second battery pack 200 are disposed within the mounting cavity 420. The protective member 400 covers the outer surfaces of the first battery pack 100 and the second battery pack 200. Since the cavity walls of the mounting cavity 420 are in contact with the outer surfaces of the first battery pack 100 and the second battery pack 200, the protective member 400 completely covers the first battery pack 100 and the second battery pack 200. The protective member 400 also has a through hole 450, and one end of the power cord 300 passes through the through hole 450 and connects to the first battery pack 100 and the second battery pack 200. The other end of the power cord 300 is disposed on the side of the protective member 400 for supplying power to the electric blanket. In the actual assembly process, the first battery pack 100 and the second battery pack 200 are first placed into the mounting cavity 420 of the protective component 400 in an up-down arrangement, ensuring that the outer surface of the battery pack is tightly fitted to the cavity wall of the mounting cavity 420. Then, the battery pack is bonded and fixed to the protective component 400 with special fixing adhesive to prevent loosening during use. Next, the power cord 300 is passed through the through hole 450 and connected to the first battery pack 100 and the second battery pack 200 with the correct polarity. Finally, the silicone sealing ring at the through hole 450 is tightened to complete the assembly of the entire battery structure. The anti-jet active battery structure for outdoor electric blankets in this embodiment, through the composite structure design of the protective component 400, can resist external impacts and effectively block the high-temperature sparks and molten materials during battery pack explosion, solving the problem of battery pack explosion spark sputtering in the prior art and improving the safety of outdoor electric blankets.

[0023] See Figure 1 , Figure 2 and Figure 4In one embodiment, the outer surface of the protective component 400 is covered with a splash-proof layer 410, the thickness of which is 0.01 to 0.02 mm. The edges of the protective component 400 are folded to create a sealed space for the mounting cavity 420. In this embodiment, the splash-proof layer 410 is made of tin foil, which has good high-temperature resistance and can withstand high temperatures without damage. It effectively protects against high temperatures that may occur with the battery pack and also blocks external liquid splashes and fine particles. The 0.01 to 0.02 mm thickness achieves the splash-proof function without adding excessive weight or volume to the battery structure, meeting the portability requirements of outdoor electric blankets. The tin foil is tightly wrapped on the outer surface of the protective component 400 with a special adhesive. The adhesive is selected for its high temperature resistance and good adhesion, ensuring a firm bond between the tin foil and the protective component 400, preventing detachment or peeling, and guaranteeing the stability of the splash-proof effect. Using tin foil as the splash-proof layer 410, its high-temperature resistance and splash-proof properties further enhance the protective capability of the protective component 400. Combined with the sealed design of the mounting cavity 420, it can more effectively cope with complex outdoor environments, reduce the impact of external factors on the battery pack, and enhance the barrier against hazardous substances in the event of an accident involving the battery pack, thereby improving the safety of outdoor electric blanket use. Furthermore, this design does not affect the normal assembly and power supply function of the battery structure, meeting the usage requirements of outdoor scenarios. Figure 4 As shown, Figure 4 The surface of the battery structure is covered with a splash-proof layer 410, which is made of tin foil.

[0024] like Figures 1 to 2 As shown, in one embodiment, the battery structure 10 for an outdoor electric blanket further includes a housing 500. The housing 500 has a receiving cavity 510, in which the first battery pack 100 and the second battery pack 200 are both disposed. The protective member 400 covers the housing 500. It can be understood that by adding the housing 500, the protection for the first battery pack 100 and the second battery pack 200 is further enhanced. The housing 500 can disperse external impact forces, reducing the direct impact on the battery modules. The protective member 400, covering the housing 500, forms another protective barrier on top of the housing 500, working synergistically with the housing 500 to improve the impact resistance and anti-jet effect of the entire battery structure. Simultaneously, the housing 500 makes the installation of the battery modules more organized, facilitates the covering of the protective member 400 and the assembly of the overall structure, and better meets the stringent requirements of complex outdoor environments for battery structures, ensuring the safe and stable use of the outdoor electric blanket.

[0025] like Figure 2As shown, the aperture of the via 450 is adapted to the outer diameter of the power line 300, and the wall of the via 450 is tightly fitted to the outer surface of the power line 300. This tight fit significantly improves the sealing performance of the battery structure. In outdoor environments, rain, dew, or humid air are inevitable. If there is a gap between the via 450 and the power line 300, this moisture may enter the mounting cavity 420 or the receiving cavity 510, corroding the first battery pack 100, the second battery pack 200, and related connecting components, causing short circuits and other malfunctions. The tight fit between the aperture wall and the outer surface of the power line 300 effectively prevents the intrusion of moisture, dust, and other impurities, providing a relatively dry and clean environment for the internal battery packs and extending the battery structure's lifespan. Simultaneously, the gap between the power line 300 and the via 450 is sealed with adhesive, thus ensuring the sealing performance of the via 450.

[0026] Combination Figure 2 and Figure 3 In one embodiment, the protective member 400 is provided with a first limiting part 430 and a second limiting part 440. The first limiting part 430 is disposed at a first end of the protective member 400, and the second limiting part is disposed at a second end of the protective member 400. Both the first limiting part 430 and the second limiting part 440 are disposed within the mounting cavity 420. The first end of the housing 500 abuts against the first limiting part 430, and the second end of the housing 500 abuts against the second limiting part 440. It is understood that the protective component 400 is provided with a first limiting part 430 and a second limiting part 440. The first limiting part 430 is located at the first end of the protective component 400, and the second limiting part 440 is located at the second end of the protective component 400. When the housing 500 is placed into the mounting cavity 420, the first end of the housing 500 abuts against the first limiting part 430, and the second end of the housing 500 abuts against the second limiting part 440, thus firmly fixing the housing 500 along its length within the mounting cavity 420 and preventing axial movement. Simultaneously, the protrusion structure of the limiting part also provides some restriction in the radial direction of the housing 500, reducing the shaking of the housing 500 within the mounting cavity 420.

[0027] Combination Figure 1 and Figure 2As shown, in one embodiment, the first battery pack 100 and the second battery pack 200 are arranged side by side within the accommodating cavity 510, with a gap between them, and the gap is filled with heat-insulating cotton 600. It is understood that the heat-insulating cotton 600 effectively prevents heat transfer interference between the first battery pack 100 and the second battery pack 200. When one battery pack experiences localized high temperatures due to external impact, short circuit, or other reasons, the other battery pack can maintain a relatively stable temperature for a certain period, giving the user time to handle abnormal situations and reducing the probability of overall battery structure failure. Simultaneously, the side-by-side arrangement combined with the gap filling facilitates heat dissipation for both battery packs, reducing the possibility of malfunctions caused by heat accumulation, further improving the safety and reliability of the outdoor electric blanket battery structure, and better adapting to the complex and changing outdoor environment. The first battery pack 100 and the second battery pack 200 are arranged side-by-side within the accommodating cavity 510, with their length direction aligned with the length direction of the accommodating cavity 510 of the housing 500. This arrangement allows for a more compact battery structure in the width direction, reducing the overall volume compared to a top-bottom arrangement and meeting the portability requirements of outdoor equipment. The gap between the two battery packs is controlled at 2-3mm, providing sufficient space for the insulation cotton 600 without wasting internal space in the accommodating cavity 510 due to excessively large gaps.

[0028] like Figure 1 As shown, in one embodiment, the protective member 400 is cylindrical in shape. It can be understood that by defining the shape of the protective member 400 as cylindrical, the mounting cavity 420 of the cylindrical protective member 400 is further cylindrical, matching the shape of the internal battery pack or housing 500. The advantage of the cylindrical protective member 400 is its better uniformity of force distribution. When subjected to impact or compression outdoors, the cylindrical structure can evenly distribute external force across the entire cylindrical wall, avoiding stress concentration caused by sharp edges, thereby reducing the risk of localized damage and improving the protection of the internal battery pack.

[0029] like Figure 1 As shown, in one embodiment, the housing 500 is a one-piece molded structure. It can be understood that designing the housing 500 as a one-piece molded structure further enhances the structural strength of the housing 500, thereby reducing unnecessary connecting structures and enabling the housing 500 to maintain its overall structural integrity even under internal impacts and external collisions.

[0030] This application also includes a battery pack comprising the battery structure 10 for outdoor electric blankets as described in any of the above embodiments.

[0031] Compared with the prior art, this disclosure has at least the following advantages: The protective component 400 has a mounting cavity 420, and the first battery pack 100 and the second battery pack 200 are disposed within the mounting cavity 420. The protective component 400 covers the outer surfaces of the first battery pack 100 and the second battery pack 200. Since the cavity walls of the mounting cavity 420 are in contact with the outer surfaces of the first battery pack 100 and the second battery pack 200, the protective component 400 completely covers the first battery pack 100 and the second battery pack 200. The protective component 400 also has a through hole 450, and one end of the power cord 300 passes through the through hole 450 and connects to the first battery pack 100 and the second battery pack 200. The other end of the power cord 300 is disposed on the side of the protective component 400 for supplying power to the electric blanket. In the actual assembly process, the first battery pack 100 and the second battery pack 200 are first placed into the mounting cavity 420 of the protective component 400 in an up-down arrangement, ensuring that the outer surface of the battery pack is tightly fitted to the cavity wall of the mounting cavity 420. Then, the battery pack is bonded and fixed to the protective component 400 with special fixing adhesive to prevent loosening during use. Next, the power cord 300 is passed through the through hole 450 and connected to the first battery pack 100 and the second battery pack 200 with the correct polarity. Finally, the silicone sealing ring at the through hole 450 is tightened to complete the assembly of the entire battery structure. The anti-jet active battery structure for outdoor electric blankets in this embodiment, through the composite structure design of the protective component 400, can resist external impacts and effectively block the high-temperature sparks and molten materials during battery pack explosion, solving the problem of battery pack explosion spark sputtering in the prior art and improving the safety of outdoor electric blankets.

[0032] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A battery structure for an outdoor electric blanket, characterized in that, The device includes a first battery pack, a second battery pack, a power cord, and a protective component. The protective component has a mounting cavity in which the first and second battery packs are disposed. The protective component covers the outer surfaces of the first and second battery packs, and the cavity wall is in contact with the outer surfaces of the first and second battery packs. The protective component has a through hole through which one end of the power cord passes and is connected to the first and second battery packs respectively. The other end of the power cord is disposed on the side of the protective component. The outer surface of the protective component is covered with a splash-proof layer with a thickness of 0.01 to 0.02 mm, and the edge of the protective component is folded to make the mounting cavity a sealed space.

2. The battery structure for an outdoor electric blanket according to claim 1, wherein The battery structure for outdoor electric blankets also includes a housing, which has a receiving cavity, in which the first battery pack and the second battery pack are both disposed, and the protective component covers the housing.

3. The battery structure for outdoor electric blankets according to claim 2, characterized in that, The diameter of the via is adapted to the outer diameter of the power line, and the wall of the via is in close contact with the outer surface of the power line.

4. The battery structure for an outdoor electric blanket according to claim 3, wherein The protective component is provided with a first limiting part and a second limiting part. The first limiting part is provided at the first end of the protective component, and the second limiting part is provided at the second end of the protective component. Both the first limiting part and the second limiting part are provided in the mounting cavity. The first end of the housing abuts against the first limiting part, and the second end of the housing abuts against the second limiting part.

5. The battery structure for an outdoor electric blanket according to claim 2, characterized in that, The first battery pack and the second battery pack are arranged side by side in the accommodating cavity, with a gap between them, and the gap is filled with heat insulation cotton.

6. The battery structure for an outdoor electric blanket according to claim 5, wherein The protective component is cylindrical in shape.

7. The battery structure for an outdoor electric blanket according to claim 6, characterized in that, The shell is a one-piece molded structure.

8. A battery pack, characterized in that, The battery structure for an outdoor electric blanket includes any one of claims 1 to 7.

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