Thermoelectric isolation structure, beam structure and battery pack

Abstract

The utility model discloses a thermoelectric isolation structure, a beam structure and a battery pack, the thermoelectric isolation structure is used for the battery pack, the battery pack comprises the beam structure, one side of the beam structure in the width direction is provided with a groove, the groove penetrates through the beam structure in the thickness direction of the beam structure, and the thermoelectric isolation structure comprises a glass piece, the glass pieces comprise the first glass piece and the second glass piece, the first glass piece is arranged in the groove, the second glass piece is arranged between the first glass piece and the inner wall of the groove, and the second glass piece is connected with the inner wall of the groove in a sealed mode and attached to the first glass piece in a sealed mode; and the conducting strip penetrates through the first glass piece in the thickness direction of the beam structure and is in sealed connection with the first glass piece. According to the thermoelectric isolation structure provided by the utility model, the melting point of the glass piece is high, so that the sealing of the battery pack at internal high temperature is not easy to lose efficacy; the mechanical performance of the glass piece is good, so that the sealing of the battery pack is not easy to lose efficacy when the battery pack is pressed, the sealing reliability of the battery pack is improved, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a thermal and electrical isolation structure, a beam structure and a battery pack. Background Art

[0002] In the prior art, the connector is installed on the beam structure through a mounting bracket, and the mounting bracket and the beam structure are sealed by a sealant. The sealant is made of sealant, sealing foam or silicone rubber, which is prone to aging and failure over time, and is also prone to deformation and failure under high temperature and pressure, resulting in poor sealing reliability. At the same time, a sealant needs to be installed between the mounting bracket and the beam structure, and the assembly process is complicated. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a thermal isolation structure that improves the sealing reliability of the battery pack and reduces the number of assembly steps, thereby improving assembly efficiency.

[0004] The utility model also provides a beam structure, which includes the above-mentioned thermal and electrical isolation structure.

[0005] The utility model also provides a battery pack, comprising the above-mentioned beam structure.

[0006] According to an embodiment of the present invention, a thermoelectric isolation structure is used for a battery pack, and the battery pack includes a beam structure, wherein one side of the beam structure in the width direction has a groove, and the groove penetrates the beam structure in the thickness direction of the beam structure. The thermoelectric isolation structure includes: a glass piece, wherein the glass piece includes a first glass piece and a second glass piece, the first glass piece is arranged in the groove, and the second glass piece is arranged between the first glass piece and the inner wall of the groove, the second glass piece is sealed to the inner wall of the groove and is sealed and fitted with the first glass piece; and a conductive sheet, wherein the conductive sheet penetrates the first glass piece along the thickness direction of the beam structure and is sealed to the first glass piece.

[0007] According to the thermal isolation structure of the embodiment of the present invention, a groove is provided on one side of the beam structure in the width direction and extends through the beam structure in the thickness direction. A first glass member is provided in the groove, and a second glass member is provided between the first glass member and the inner wall of the groove. The second glass member is sealed to the inner wall of the groove and in close contact with the first glass member. A conductive sheet is provided through the first glass member in the thickness direction of the beam structure and is sealed to the first glass member, so that the glass members form a sealed structure for the battery pack. The glass members have a high melting point and are not easily melted at high temperatures, making the seal of the battery pack less susceptible to failure under high temperatures. At the same time, the glass members have good mechanical properties and are not easily deformed under stress, making the seal of the battery pack less susceptible to failure under pressure and having high durability, thereby improving the sealing reliability of the battery pack. At the same time, because the first and second glass members are sealed by contact, no additional sealing members are required, which reduces the assembly process and improves assembly efficiency.

[0008] In some embodiments of the present invention, at least the surface of the first glass piece that is bonded to the second glass piece is a frosted surface; and / or at least the surface of the second glass piece that is bonded to the first glass piece is a frosted surface.

[0009] In some embodiments of the present invention, the second glass member includes a first plate and a second plate, and the first plate and the second plate are respectively arranged between two inner walls of the groove that are opposite to each other along the length direction of the beam structure and two side walls of the first glass member that are opposite to each other along the length direction of the beam structure.

[0010] In some embodiments of the present invention, along the direction from the notch of the groove to the bottom wall of the groove, the two inner walls of the groove opposite to each other along the length direction of the beam structure are inclined toward each other; the first plate and the second plate are inclined toward each other; and the two side walls of the first glass piece opposite to each other along the length direction of the beam structure are inclined toward each other.

[0011] In some embodiments of the present invention, the side wall of the first glass piece opposite to the first plate has the same inclination angle as the first plate; and / or the side wall of the first glass piece opposite to the second plate has the same inclination angle as the second plate.

[0012] In some embodiments of the present invention, the inner wall of the groove opposite to the first plate has the same inclination angle as the first plate; and / or the inner wall of the groove opposite to the second plate has the same inclination angle as the second plate.

[0013] In some embodiments of the present invention, the angle between the first plate and the width direction of the beam structure is A1, and satisfies: 0<A1<90°; and / or, the angle between the second plate and the width direction of the beam structure is B1, and satisfies: 0<B1<90°; and / or, the angle between the side wall of the first glass piece opposite to the first plate and the width direction of the beam structure is A2, and satisfies: 0<A2<90°; and / or, the angle between the side wall of the first glass piece opposite to the second plate and the width direction of the beam structure is B2, and satisfies: 0<B2<90°.

[0014] In some embodiments of the present invention, the second glass piece further includes a first connecting rib and a second connecting rib, the first connecting rib and the second connecting rib are located between the bottom wall of the groove and the first glass piece, the first connecting rib and the second connecting rib extend along the length direction of the beam structure and are spaced apart in the thickness direction of the beam structure, and both ends of the first connecting rib and the second connecting rib in the length direction are respectively connected to the first plate and the second plate.

[0015] In some embodiments of the present invention, the bottom wall of the groove has a first stop protrusion and a second stop protrusion at both ends along the thickness direction of the beam structure, respectively, the first connecting rib is arranged between the first stop protrusion and the first glass piece, and the second connecting rib is arranged between the second stop protrusion and the first glass piece.

[0016] In some embodiments of the present invention, the surface of the first glass piece opposite to the bottom wall of the groove has a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are respectively located at the two ends of the first glass piece along the thickness direction of the beam structure, the first connecting rib is located between the first inclined surface and the first stop protrusion, and the second connecting rib is located between the second inclined surface and the second stop protrusion, and along the direction from the groove notch to the bottom wall of the groove, the first inclined surface and the second inclined surface are inclined toward each other, the surfaces of the first connecting rib and the second connecting rib facing each other are inclined toward each other, and the surfaces of the first stop protrusion and the second stop protrusion facing each other are inclined toward each other.

[0017] In some embodiments of the present invention, the first inclined surface, the surface of the first connecting rib facing the second connecting rib, and the surface of the first stop protrusion facing the second stop protrusion have the same inclination angle, and the second inclined surface, the surface of the second connecting rib facing the first connecting rib, and the surface of the second stop protrusion facing the first stop protrusion have the same inclination angle.

[0018] In some embodiments of the present invention, the angle between the first inclined surface and the width direction of the beam structure is C1, 0<C1<90°; and / or, the angle between the surface of the first connecting rib facing the second connecting rib and the width direction of the beam structure is C2, 0<C2<90°; and / or, the angle between the surface of the first stop protrusion facing the second stop protrusion and the width direction of the beam structure is C3, 0<C3<90°; and / or, the angle between the second inclined surface and the width direction of the beam structure is D1, 0<D1<90°; and / or, the angle between the surface of the second connecting rib facing the first connecting rib and the width direction of the beam structure is D2, 0<D2<90°; and / or, the angle between the surface of the second stop protrusion facing the first stop protrusion and the width direction of the beam structure is D3, 0<D3<90°.

[0019] The beam structure according to the embodiment of the present invention includes the above-mentioned thermal and electrical isolation structure.

[0020] According to the beam structure of the present invention, the thermal isolation structure is provided. A groove is provided on one side of the beam structure in the width direction, extending through the beam structure along its thickness. A first glass member is provided within the groove, and a second glass member is provided between the first glass member and the inner wall of the groove. The second glass member is sealed to the inner wall of the groove and in close contact with the first glass member. A conductive sheet is provided through the first glass member in the thickness direction of the beam structure and is sealed to the first glass member. This allows the glass members to form a sealed structure for the battery pack. The glass members have a high melting point and are not easily melted at high temperatures, making the seal of the battery pack less susceptible to failure at high temperatures. Furthermore, the glass members have excellent mechanical properties and are not easily deformed under stress, making the seal of the battery pack less susceptible to failure under pressure and providing greater durability, thereby improving the sealing reliability of the battery pack. Furthermore, because the first and second glass members are sealed by contact, no additional sealing members are required, reducing assembly steps and improving assembly efficiency.

[0021] A battery pack according to an embodiment of the present invention includes the above-mentioned beam structure.

[0022] According to an embodiment of the present invention, a battery pack is provided with the aforementioned beam structure and thermal isolation structure. A groove is provided on one side of the beam structure in the width direction, extending through the beam structure along its thickness. A first glass member is provided within the groove, and a second glass member is provided between the first glass member and the inner wall of the groove. The second glass member is sealed to the inner wall of the groove and in close contact with the first glass member. A conductive sheet is provided through the first glass member in the thickness direction of the beam structure and is sealed to the first glass member. Thus, the glass members form a sealed structure for the battery pack. The glass members have a high melting point and are not easily melted at high temperatures, thereby preventing the seal of the battery pack from failing under high temperatures. Furthermore, the glass members have excellent mechanical properties and are not easily deformed under stress. This prevents the seal of the battery pack from failing under pressure and provides high durability, thereby improving the sealing reliability of the battery pack. Furthermore, because the first and second glass members are sealed by contact, no additional sealing members are required, reducing assembly steps and improving assembly efficiency.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a perspective view of a beam structure according to an embodiment of the present utility model;

[0026] Figure 2 yes Figure 1 Enlarged view of point E in the middle;

[0027] Figure 3 is an exploded view of a beam structure according to an embodiment of the present utility model;

[0028] Figure 4 yes Figure 3 Enlarged view of point F in the middle;

[0029] Figure 5 yes Figure 3 Enlarged view of point G in the middle;

[0030] Figure 6 yes Figure 3 Enlarged view of point H in the middle.

[0031] Reference numerals:

[0032] 100. Beam structure;

[0033] 10. Thermoelectric isolation structure;

[0034] 1. Glass member; 11. First glass member; 111. First inclined surface; 112. Second inclined surface; 12. Second glass member; 121. First plate; 122. Second plate; 123. First connecting rib; 124. Second connecting rib;

[0035] 2. Conductive sheet;

[0036] 20. Groove; 201. First stop protrusion; 202. Second stop protrusion. DETAILED DESCRIPTION

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0040] Reference below Figures 1-6 A thermal and electrical isolation structure 10 according to an embodiment of the present invention is described.

[0041] like Figures 1-6 As shown, a thermal and electrical isolation structure 10 according to an embodiment of the present invention is used in a battery pack and includes: a glass member 1 and a conductive sheet 2 .

[0042] Specifically, refer to Figures 1-4 The battery pack includes a beam structure 100, and a groove 20 is provided on one side of the beam structure 100 in the width direction. The groove 20 penetrates the beam structure 100 in the thickness direction of the beam structure 100; the glass piece 1 includes a first glass piece 11 and a second glass piece 12, the first glass piece 11 is arranged in the groove 20, and the second glass piece 12 is arranged between the first glass piece 11 and the inner wall of the groove 20, the second glass piece 12 is sealed to the inner wall of the groove 20 and is sealed to the first glass piece 11; the conductive sheet 2 is penetrated by the first glass piece 11 along the thickness direction of the beam structure 100 and is sealed to the first glass piece 11.

[0043] It should be noted that the battery pack includes battery cells, and the beam structure 100 forms the peripheral wall of the battery pack shell, which is used to protect and isolate the battery cells. One end of the conductive sheet 2 along the thickness direction of the beam structure 100 needs to pass through the beam structure 100 to be electrically connected to the battery cells, and the other end is suitable for electrical connection with external equipment, thereby realizing the current output of the battery pack.

[0044] It is understandable that the second glass piece 12 is sealed to the inner wall of the groove 20, for example, by matching sealing, compression sealing, melting sealing and laser sealing, thereby preventing substances such as liquid and gas from entering the battery pack through the gap between the second glass piece 12 and the inner wall of the groove 20, thereby improving the sealing of the battery pack. The first glass piece 11 and the second glass piece 12 are sealed and fitted, and the sealing between the two pieces of the same material makes the sealing effect better. The conductive sheet 2 and the first glass piece 11 are sealed and connected, for example, by matching sealing, compression sealing, melting sealing and laser sealing, thereby preventing substances such as liquid and gas from entering the battery pack through the gap between the first glass piece 11 and the conductive sheet 2, thereby improving the sealing of the battery pack.

[0045] By using the first and second glass members 11, 12 as seals, the battery pack's internal seal is less susceptible to failure at high temperatures due to the high melting point of the glass member 1, which is less likely to melt at high temperatures. Furthermore, the glass member 1 has excellent mechanical properties and is less likely to deform under stress, making the battery pack's seal less susceptible to failure under pressure and providing increased durability. Thus, using the first and second glass members 11, 12 as seals improves the battery pack's sealing reliability.

[0046] In addition, due to the good insulation performance of the glass piece 1, the first glass piece 11 and the second glass piece 12 can also serve as insulating parts between the conductive sheet 2 and the beam structure 100, thereby avoiding electrical connection between the conductive sheet 2 and the beam structure 100, avoiding the risk of leakage, and thus improving the safety of the battery pack.

[0047] At the same time, since the first glass piece 11 and the second glass piece 12 are sealed by contact, no additional sealing member needs to be assembled, which reduces the assembly process and improves the assembly efficiency.

[0048] According to the thermal isolation structure 10 of the present invention, a groove 20 is provided on one side of the beam structure 100 along its thickness, extending through the beam structure 100. A first glass member 11 is positioned within the groove 20, and a second glass member 12 is positioned between the first glass member 11 and the inner wall of the groove 20. The second glass member 12 is sealed to the inner wall of the groove 20 and in close contact with the first glass member 11. A conductive sheet 2 is positioned through the first glass member 11 along its thickness and sealed to the first glass member 11. This allows the glass member 1 to form a sealed structure for the battery pack. The glass member 1 has a high melting point and is not easily melted at high temperatures, making the seal of the battery pack less susceptible to failure under high temperatures. Furthermore, the glass member 1 has excellent mechanical properties and is not easily deformed under stress, making the seal less susceptible to failure under pressure and providing increased durability, thereby improving the sealing reliability of the battery pack. Furthermore, because the first and second glass members 11, 12 are sealed by contact, no additional sealing components are required, reducing assembly steps and improving assembly efficiency.

[0049] In some embodiments of the present invention, at least the surface of the first glass member 11 that contacts the second glass member 12 is frosted. It should be noted that frosting is a process that creates a finely textured surface by mechanical grinding or chemical methods. This process is typically performed using abrasives such as corundum, silica sand, and pomegranate powder.

[0050] It can be understood that the frosted surface of the first glass member 11 can better adhere to the surface of the second glass member 12, reducing gas and liquid leakage and improving the sealing reliability of the battery pack. At the same time, the roughness of the frosted surface of the first glass member 11 increases friction, making the adhesion between the first glass member 11 and the second glass member 12 more secure, and improving the installation stability and reliability of the first glass member 11.

[0051] In some embodiments of the present invention, at least the surface of the second glass piece 12 that is in contact with the first glass piece 11 is a frosted surface.

[0052] It can be understood that the frosted surface of the second glass member 12 can better adhere to the surface of the first glass member 11, reducing gas and liquid leakage and improving the sealing reliability of the battery pack. At the same time, the roughness of the frosted surface of the second glass member 12 increases friction, making the adhesion between the first glass member 11 and the second glass member 12 more secure, and improving the installation stability and reliability of the first glass member 11.

[0053] Furthermore, at least the surface of the first glass piece 11 that is in contact with the second glass piece 12 is a frosted surface. Therefore, when the frosted glass surfaces of the first glass piece 11 and the second glass piece 12 contact each other, the uneven surfaces can fit into each other, increasing the contact area and friction, thereby achieving a better sealing effect and a mutual fixing effect.

[0054] In some embodiments of the present invention, Figure 2 、 Figure 4 and Figure 5 As shown, the second glass member 12 includes a first plate 121 and a second plate 122, which are respectively arranged between the two inner walls of the groove 20 opposite to each other along the length direction of the beam structure 100 and the two side walls of the first glass member 11 opposite to each other along the length direction of the beam structure 100.

[0055] It can be understood that the arrangement of the first plate 121 and the second plate 122 can completely cover the two inner walls of the groove 20 that are opposite to each other along the length direction of the beam structure 100, thereby preventing the first glass piece 11 from directly contacting the two inner walls of the groove 20 that are opposite to each other along the length direction of the beam structure 100, thereby improving the sealing performance of the battery pack.

[0056] In some embodiments of the present invention, Figure 2-Figure 6 As shown, along the direction from the notch of the groove 20 to the bottom wall of the groove 20, the two inner walls of the groove 20 that are opposite to each other along the length direction of the beam structure 100 are inclined toward each other; the first plate 121 and the second plate 122 are inclined toward each other; and the two side walls of the first glass member 11 that are opposite to each other along the length direction of the beam structure 100 are inclined toward each other.

[0057] It can be understood that, through the above-mentioned method, the outer contour of the projection of the groove 20 in the direction perpendicular to the thickness of the beam structure 100 is a trapezoid (the bottom side is long at the groove mouth and short at the bottom wall), and similarly, the outer contour of the projection of the first glass piece 11 in the direction perpendicular to the thickness of the beam structure 100 is a corresponding trapezoid.

[0058] As a result, on the one hand, the longer length of the opening of the groove 20 along the length of the beam structure 100, i.e., the larger area of ​​the opening of the groove 20, facilitates the assembly of the second glass member 12, thereby improving assembly and production efficiency. On the other hand, a foolproof design is formed, preventing the first glass member 11 from being inverted in the width direction of the beam structure 100 when installed in the groove 20, thereby reducing installation difficulty and installation errors, further improving assembly and production efficiency.

[0059] In some embodiments of the present invention, Figure 3 、 Figure 5 and Figure 6As shown, the side walls of the first glass member 11 opposite to the first plate 121 have the same inclination angle as the first plate 121. As a result, the first glass member 11 and the second glass member 12 can be better fitted and sealed, which not only reduces the difficulty of installation, improves assembly and production efficiency, but also improves the sealing reliability of the battery pack.

[0060] In some embodiments of the present invention, Figure 3 、 Figure 5 and Figure 6 As shown, the sidewalls of the first glass member 11 and the second plate 122 facing each other have the same inclination angle as the second plate 122. This further allows the first glass member 11 and the second glass member 12 to fit and seal better, reducing installation difficulty, improving assembly and production efficiency, and enhancing the sealing reliability of the battery pack.

[0061] In some embodiments of the present invention, Figure 3 、 Figure 4 and Figure 5 As shown, the inner wall of the groove 20 opposite to the first plate 121 has the same inclination angle as the first plate 121. As a result, the second glass member 12 and the bottom wall of the groove 20 can be better sealed and connected, which not only reduces the difficulty of assembly, improves assembly and production efficiency, but also improves the sealing reliability of the battery pack.

[0062] In some embodiments of the present invention, Figure 3 、 Figure 4 and Figure 5 As shown, the inner wall of the groove 20 opposite the second plate 122 has the same inclination angle as the second plate 122. This further enables a better sealing connection between the second glass member 12 and the bottom wall of the groove 20, which not only reduces assembly difficulty, improves assembly and production efficiency, but also enhances the sealing reliability of the battery pack.

[0063] In some embodiments of the present invention, Figure 3 and Figure 5 As shown, the angle between the first plate 121 and the width direction of the beam structure 100 is A1, and satisfies: 0<A1<90°; for example, 10°, 20°, 40° or 60, etc., thereby facilitating the formation of a structure in which the first plate 121 and the second plate 122 are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0064] In some embodiments of the present invention, Figure 3 and Figure 5As shown, the angle between the second plate 122 and the width direction of the beam structure 100 is B1, and satisfies: 0<B1<90°; for example, 10°, 20°, 40° or 60, etc., thereby facilitating the formation of a structure in which the first plate 121 and the second plate 122 are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0065] In some embodiments of the present invention, Figure 3 and Figure 6 As shown, the angle between the side walls of the first glass member 11 and the first plate 121 opposite to each other and the width direction of the beam structure 100 is A2, and satisfies: 0<A2<90°; for example, 10°, 20°, 40° or 60°, etc., thereby facilitating the formation of a structure in which the two side walls of the first glass member 11 opposite to each other along the length direction of the beam structure 100 are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0066] In some embodiments of the present invention, Figure 3 、 Figure 5 and Figure 6 As shown, the angle B2 between the opposing sidewalls of the first glass member 11 and the second plate 122 and the width direction of the beam structure 100 satisfies the following: 0<B2<90°. For example, 10°, 20°, 40°, or 60° can be formed. This facilitates forming a structure in which the opposing sidewalls of the first glass member 11 along the length direction of the beam structure 100 are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0067] In some embodiments of the present invention, Figure 2-Figure 5 As shown, the second glass piece 12 further includes a first connecting rib 123 and a second connecting rib 124. The first connecting rib 123 and the second connecting rib 124 are located between the bottom wall of the groove 20 and the first glass piece 11. The first connecting rib 123 and the second connecting rib 124 extend along the length direction of the beam structure 100 and are spaced apart in the thickness direction of the beam structure 100. Both ends of the first connecting rib 123 and the second connecting rib 124 in the length direction are respectively connected to the first plate 121 and the second plate 122.

[0068] It is understandable that if the seal is achieved by fitting the first glass member 11 and the bottom wall of the recess 20, the bottom wall of the recess 20 is difficult to frost, resulting in insufficient sealing between the first glass member 11 and the bottom wall of the recess 20, thus affecting the sealing performance of the battery pack. The provision of the first connecting rib 123 and the second connecting rib 124 allows the first and second connecting ribs 123, 124 to form a seal with the side of the first glass member 11 facing the bottom wall of the recess 20. By frosting the contact surfaces of the first and second connecting ribs 123, 124 with the first glass member 11, the sealing performance of the battery pack is ensured.

[0069] On the other hand, since the first connecting rib 123 and the second connecting rib 124 extend along the length direction of the beam structure 100 and are spaced apart in the thickness direction of the beam structure 100, there is a gap between the first connecting rib 123 and the second connecting rib 124. The existence of the gap is beneficial to the lightweight and economy of the thermal isolation structure 10.

[0070] At the same time, since the two ends of the first connecting rib 123 and the second connecting rib 124 in the length direction are respectively connected to the first plate 121 and the second plate 122, the second glass piece 12 has better integrity and higher structural strength, which reduces the occurrence of failure of the second glass piece 12.

[0071] In some embodiments of the present invention, Figure 2-Figure 6 As shown, the bottom wall of the groove 20 has a first stop protrusion 201 and a second stop protrusion 202 at both ends along the thickness direction of the beam structure 100, the first connecting rib 123 is arranged between the first stop protrusion 201 and the first glass piece 11, and the second connecting rib 124 is arranged between the second stop protrusion 202 and the first glass piece 11.

[0072] It can be understood that the first connecting rib 123 is arranged between the first stop protrusion 201 and the first glass piece 11, and the second connecting rib 124 is arranged between the second stop protrusion 202 and the first glass piece 11. Therefore, through the arrangement of the first stop protrusion 201 and the second stop protrusion 202, part of the first glass piece 11 is arranged between the first stop protrusion 201 and the second stop protrusion 202 along the thickness direction of the beam structure 100. Therefore, when the first glass piece 11 is installed in the groove 20, the first glass piece 11 can be prevented from moving in the thickness direction of the beam structure 100, so that the first glass piece 11 can be fixed in the groove 20, thereby improving the installation reliability and stability of the first glass piece 11.

[0073] In some embodiments of the present invention, Figure 2-Figure 6As shown, the surface of the first glass piece 11 opposite to the bottom wall of the groove 20 has a first inclined surface 111 and a second inclined surface 112, and the first inclined surface 111 and the second inclined surface 112 are respectively located at the two ends of the first glass piece 11 along the thickness direction of the beam structure 100, the first connecting rib 123 is located between the first inclined surface 111 and the first stop protrusion 201, and the second connecting rib 124 is located between the second inclined surface 112 and the second stop protrusion 202. Along the direction from the notch of the groove 20 to the bottom wall of the groove 20, the first inclined surface 111 and the second inclined surface 112 are inclined toward each other, the surfaces of the first connecting rib 123 and the second connecting rib 124 facing each other are inclined toward each other, and the surfaces of the first stop protrusion 201 and the second stop protrusion 202 facing each other are inclined toward each other.

[0074] It can be understood that, by inclining the surfaces of the first connecting rib 123 and the second connecting rib 124 facing each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20, the width of the gap between the first stop protrusion 201 and the second stop protrusion 202 along the thickness direction of the beam structure 100 gradually increases along the direction from the bottom wall of the groove 20 to the notch of the groove 20, thereby facilitating the first connecting rib 123 and the second connecting rib 124 to enter the gap between the first stop protrusion 201 and the second stop protrusion 202, thereby facilitating the assembly of the second glass member 12.

[0075] Similarly, along the direction from the notch of the groove 20 to the bottom wall of the groove 20, the first inclined surface 111 and the second inclined surface 112 are inclined toward each other, and the surfaces of the first stop protrusion 201 and the second stop protrusion 202 facing each other are inclined toward each other, thereby facilitating the assembly of the first glass piece 11.

[0076] In some embodiments of the present invention, Figure 2-Figure 6 As shown, the first inclined surface 111, the surface of the first connecting rib 123 facing the second connecting rib 124, and the surface of the first stop protrusion 201 facing the second stop protrusion 202 have the same inclination angle. The second inclined surface 112, the surface of the second connecting rib 124 facing the first connecting rib 123, and the surface of the second stop protrusion 202 facing the first stop protrusion 201 have the same inclination angle. This improves the seal between the first glass member 11 and the second glass member 12, as well as the seal between the second glass member 12 and the bottom wall of the groove 20. This reduces installation difficulty, improves assembly and production efficiency, and enhances the sealing reliability of the battery pack.

[0077] In some embodiments of the present invention, Figure 3 and Figure 6As shown, the angle between the first inclined surface 111 and the width direction of the beam structure 100 is C1, 0<C1<90°; for example, 10°, 20°, 40° or 60, etc., thereby facilitating the formation of a structure in which the first inclined surface 111 and the second inclined surface 112 are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0078] In some embodiments of the present invention, Figure 3 and Figure 5 As shown, the angle between the surface of the first connecting rib 123 facing the second connecting rib 124 and the width direction of the beam structure 100 is C2, 0<C2<90°; for example, 10°, 20°, 40° or 60, etc., thereby facilitating the formation of a structure in which the surfaces of the first connecting rib 123 and the second connecting rib 124 facing each other are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0079] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the angle between the surface of the first stop protrusion 201 facing the second stop protrusion 202 and the width direction of the beam structure 100 is C3, 0<C3<90°; for example, 10°, 20°, 40° or 60, etc., thereby facilitating the formation of a structure in which the surfaces of the first stop protrusion 201 and the second stop protrusion 202 facing each other are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0080] In some embodiments of the present invention, Figure 3 and Figure 6 As shown, the angle between the second inclined surface 112 and the width direction of the beam structure 100 is D1, 0<D1<90°; for example, 10°, 20°, 40° or 60, etc., thereby facilitating the formation of a structure in which the first inclined surface 111 and the second inclined surface 112 are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0081] In some embodiments of the present invention, Figure 3 and Figure 5 As shown, the angle between the surface of the second connecting rib 124 facing the first connecting rib 123 and the width direction of the beam structure 100 is D2, 0<D2<90°; for example, 10°, 20°, 40° or 60, etc., thereby facilitating the formation of a structure in which the surfaces of the first connecting rib 123 and the second connecting rib 124 facing each other are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0082] In some embodiments of the present invention, Figure 3 and Figure 4As shown, the angle D3 between the surface of the second stop protrusion 202 facing the first stop protrusion 201 and the width direction of the beam structure 100 is 0<D3<90°. For example, 10°, 20°, 40°, or 60° can be formed. This facilitates forming a structure in which the surfaces of the first stop protrusion 201 and the second stop protrusion 202 facing each other are inclined toward each other along the direction from the notch of the groove 20 to the bottom wall of the groove 20 in the present invention.

[0083] The beam structure 100 according to an embodiment of the present invention is described below.

[0084] The beam structure 100 according to the embodiment of the present invention includes the above-mentioned thermal and electrical isolation structure 10 .

[0085] According to the beam structure 100 of the embodiment of the present invention, by providing the above-mentioned thermal and electrical isolation structure 10, a groove 20 is provided on one side of the beam structure 100 in the width direction and passes through the beam structure 100 in the thickness direction of the beam structure 100. The first glass piece 11 is provided in the groove 20, and the second glass piece 12 is provided between the first glass piece 11 and the inner wall of the groove 20. The second glass piece 12 is sealed and connected to the inner wall of the groove 20 and is sealed and fitted with the first glass piece 11; the conductive sheet 2 is provided in the first glass piece 11 in the thickness direction of the beam structure 100 and is sealed and fitted with the first glass piece 11, so that the glass piece 1 forms a sealing structure of the battery pack. The glass piece 1 has a high melting point and is not easy to melt at high temperatures, so that the seal of the battery pack is not easy to fail at high temperatures inside; at the same time, the glass piece 1 has good mechanical properties and is not easy to deform under force, so that the seal of the battery pack is not easy to fail when under pressure, and has high durability, thereby improving the sealing reliability of the battery pack. At the same time, since the first glass piece 11 and the second glass piece 12 are sealed by contact, no additional sealing member needs to be assembled, which reduces the assembly process and improves the assembly efficiency.

[0086] The following describes a battery pack according to an embodiment of the present invention.

[0087] The battery pack according to the embodiment of the present invention includes the beam structure 100 described above.

[0088] According to the battery pack of the embodiment of the present invention, the above-mentioned beam structure 100 and the above-mentioned thermal isolation structure 10 are provided, and a groove 20 is provided on one side of the beam structure 100 in the width direction and passes through the beam structure 100 in the thickness direction of the beam structure 100. The first glass member 11 is provided in the groove 20, and the second glass member 12 is provided between the first glass member 11 and the inner wall of the groove 20. The second glass member 12 is sealed to the inner wall of the groove 20 and is sealed and fitted with the first glass member 11; the conductive sheet 2 is provided through the first glass member 11 in the thickness direction of the beam structure 100 and is sealed to the first glass member 11, so that the glass member 1 forms a sealed structure of the battery pack. The glass member 1 has a high melting point and is not easily melted at high temperatures, so that the seal of the battery pack is not easily invalidated at high temperatures inside; at the same time, the glass member 1 has good mechanical properties and is not easily deformed when subjected to force, so that the seal of the battery pack is not easily invalidated when subjected to pressure and has high durability, thereby improving the sealing reliability of the battery pack. At the same time, since the first glass piece 11 and the second glass piece 12 are sealed by contact, no additional sealing member needs to be assembled, which reduces the assembly process and improves the assembly efficiency.

[0089] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0090] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal and electrical isolation structure, characterized in that: For a battery pack, the battery pack includes a beam structure, one side of the beam structure in the width direction has a groove, the groove passes through the beam structure in the thickness direction of the beam structure, and the thermal isolation structure includes: A glass piece, the glass piece comprising a first glass piece and a second glass piece, the first glass piece being disposed in the groove, the second glass piece being disposed between the first glass piece and an inner wall of the groove, the second glass piece being sealed to the inner wall of the groove and in sealing contact with the first glass piece; A conductive sheet is provided through the first glass piece along a thickness direction of the beam structure and is sealed to the first glass piece.

2. The thermal and electrical isolation structure according to claim 1, characterized in that: At least the surface of the first glass piece in contact with the second glass piece is a frosted surface; And / or, at least the surface of the second glass piece that is in contact with the first glass piece is a frosted surface.

3. The thermal and electrical isolation structure according to claim 1, characterized in that: The second glass member includes a first plate and a second plate, and the first plate and the second plate are respectively arranged between two inner walls of the groove opposite to each other along the length direction of the beam structure and two side walls of the first glass member opposite to each other along the length direction of the beam structure.

4. The thermal and electrical isolation structure according to claim 3, characterized in that: Along the direction from the notch of the groove to the bottom wall of the groove, Two inner walls of the groove that are opposite to each other along the length direction of the beam structure are inclined toward each other; The first plate and the second plate are inclined toward each other; Two side walls of the first glass member that are opposite to each other along the length direction of the beam structure are inclined toward each other.

5. The thermal and electrical isolation structure according to claim 4, characterized in that: The side wall of the first glass member opposite to the first plate has the same inclination angle as the first plate; And / or, the side wall of the first glass member opposite to the second plate has the same inclination angle as the second plate.

6. The thermal and electrical isolation structure according to claim 4, characterized in that: The inner wall of the groove opposite to the first plate has the same inclination angle as the first plate; And / or, the inner wall of the groove opposite to the second plate has the same inclination angle as the second plate.

7. The thermal and electrical isolation structure according to claim 4, characterized in that: The angle between the first plate and the width direction of the beam structure is A1, and satisfies: 0<A1<90°; and / or, the angle between the second plate and the width direction of the beam structure is B1, and satisfies: 0<B1<90°; And / or, an angle A2 between a side wall of the first glass member opposite to the first plate and a width direction of the beam structure is formed, and satisfies: 0<A2<90°; And / or, an angle B2 is formed between the side walls of the first glass member and the second plate opposite to the width direction of the beam structure, and the angle satisfies: 0<B2<90°.

8. The thermal and electrical isolation structure according to claim 3, characterized in that: The second glass piece further includes a first connecting rib and a second connecting rib, wherein the first connecting rib and the second connecting rib are located between the bottom wall of the groove and the first glass piece. The first connecting rib and the second connecting rib extend along the length direction of the beam structure and are spaced apart in the thickness direction of the beam structure. Both ends of the first connecting rib and the second connecting rib in the length direction are connected to the first plate and the second plate respectively.

9. The thermal and electrical isolation structure according to claim 8, characterized in that: The bottom wall of the groove has a first stop protrusion and a second stop protrusion at both ends along the thickness direction of the beam structure, the first connecting rib is arranged between the first stop protrusion and the first glass piece, and the second connecting rib is arranged between the second stop protrusion and the first glass piece.

10. The thermal and electrical isolation structure according to claim 9, characterized in that: The surface of the first glass piece opposite to the bottom wall of the groove has a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are respectively located at the two ends of the first glass piece along the thickness direction of the beam structure, the first connecting rib is located between the first inclined surface and the first stop protrusion, and the second connecting rib is located between the second inclined surface and the second stop protrusion, along the direction from the groove notch to the bottom wall of the groove, the first inclined surface and the second inclined surface are inclined toward each other, the surfaces of the first connecting rib and the second connecting rib facing each other are inclined toward each other, and the surfaces of the first stop protrusion and the second stop protrusion facing each other are inclined toward each other.

11. The thermal and electrical isolation structure according to claim 10, characterized in that: The first inclined surface, the surface of the first connecting rib facing the second connecting rib, and the surface of the first stopping protrusion facing the second stopping protrusion have the same inclination angle. The second inclined surface, the surface of the second connecting rib facing the first connecting rib, and the surface of the second stopping protrusion facing the first stopping protrusion have the same inclination angle.

12. The thermal and electrical isolation structure according to claim 10, characterized in that: The included angle between the first inclined surface and the width direction of the beam structure is C1, 0<C1<90°; and / or, an angle between a surface of the first connecting rib facing the second connecting rib and the width direction of the beam structure is C2, 0<C2<90°; and / or, the angle between the surface of the first stop protrusion facing the second stop protrusion and the width direction of the beam structure is C3, 0<C3<90°; and / or, the included angle between the second inclined surface and the width direction of the beam structure is D1, 0<D1<90°; and / or, an angle D2 is formed between a surface of the second connecting rib facing the first connecting rib and the width direction of the beam structure, 0<D2<90°; And / or, an angle D3 is formed between a surface of the second stop protrusion facing the first stop protrusion and the width direction of the beam structure, and 0<D3<90°.

13. A beam structure, characterized in that: The invention comprises a thermal and electrical isolation structure according to any one of claims 1 to 12.

14. A battery pack, characterized in that: Comprising the beam structure according to claim 13.

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