Battery pack and electric device with same

Abstract

The utility model relates to battery pack and electrical equipment, and battery pack includes box, battery group, conducting bar and at least one insulating part. The box includes roof, and the battery group is accommodated in the box. The conducting bar includes the first conducting bar part between the battery group and the roof, and the battery group and the roof all are spaced apart with the first conducting bar part. At least one insulating part includes the first insulating part between the first conducting bar part and the roof, and the first conducting bar part and the roof all contact with the first insulating part. The first insulating part is arranged between the roof and the first conducting bar part, can avoid the first conducting bar part and the roof contact to cause the electric leakage, thereby improving the security of battery pack. In addition, since both sides of the first insulating part contact with the roof and the first conducting bar part, when the battery pack is subjected to external vibration or impact, the first insulating part can less rub with the roof, thereby reducing the wear of the first insulating part, to ensure the insulation performance between the conducting bar and the box.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular, to a battery pack and an electrical device having the same. Background Technology

[0002] As a crucial component of devices such as electric vehicles and energy storage systems, the safety and reliability of battery packs are paramount. Conductive busbars are key conductive elements within the battery pack. When the battery pack is subjected to external vibration or impact, the conductive busbars may come into contact with other components, potentially leading to problems such as leakage.

[0003] In some battery packs, insulating tape is used to wrap the conductive busbars for insulation protection. However, this method has some problems. Especially when the conductive busbar is installed between the battery pack and the top plate of the enclosure, vibration or impact can cause the busbar to shake, resulting in friction between the insulating tape wrapped around its surface and the top plate of the enclosure. This friction can wear down the insulating tape, potentially causing damage to the insulation layer and leading to insulation failure. Utility Model Content

[0004] In view of this, the present invention provides a battery pack and an electrical device having the same, with the aim of improving the insulation performance between the busbar and the top plate of the housing.

[0005] The battery pack provided by this utility model includes a housing, a battery pack, a conductive busbar, and at least one insulating member. The housing includes a top plate, and the battery pack is housed within the housing. The conductive busbar includes a first conductive busbar portion located between the battery pack and the top plate, with both the battery pack and the top plate spaced apart from the first conductive busbar portion. The at least one insulating member includes a first insulating member disposed between the first conductive busbar portion and the top plate, with both the first conductive busbar portion and the top plate in contact with the first insulating member.

[0006] On the other hand, the present invention also provides an electrical device that includes the aforementioned battery pack.

[0007] A first insulating element is installed between the top plate and the first conductive busbar section. This effectively isolates the top plate from the first conductive busbar section, preventing leakage caused by contact between the first conductive busbar section and the top plate, thereby improving the safety of the battery pack. Furthermore, since both sides of the first insulating element are in contact with both the top plate and the first conductive busbar section, the first insulating element experiences less friction with the top plate when the battery pack is subjected to external vibration or impact. This reduces wear on the first insulating element and ensures the insulation performance between the conductive busbar and the casing. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0009] It should be understood that the accompanying drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope.

[0010] It should also be understood that the same or similar reference numerals are used in the accompanying drawings to denote the same or similar elements.

[0011] It should also be understood that the accompanying drawings are only schematic, and the dimensions and scales of the elements in the drawings are not necessarily precise.

[0012] Figure 1 This is a schematic diagram of the structure of a battery pack according to an embodiment of the present disclosure.

[0013] Figure 2 yes Figure 1 An exploded view of the battery pack.

[0014] Figure 3 yes Figure 2 A schematic diagram of a part of the structure.

[0015] Figure 4 yes Figure 2 A schematic cross-sectional view of a portion of the structure.

[0016] Figure 5 yes Figure 2 A schematic top view of a portion of the image.

[0017] Figure 6 yes Figure 2 A schematic top view of a portion of the image.

[0018] Figure 7 yes Figure 2 A schematic top view of a portion of the image.

[0019] Figure 8 yes Figure 2 A schematic top view of a portion of the image.

[0020] Figure 9 This is a structural schematic diagram of an electrical device according to an embodiment of the present utility model. Detailed Implementation

[0021] The embodiments of the present invention will now be described by way of example with reference to the accompanying drawings. It should be understood that there are many ways to implement the present invention, and it should not be construed as being limited to the embodiments described herein. The embodiments described herein are only for a more thorough and clear understanding of the present invention.

[0022] <Example Battery Pack> refer to Figure 1 and Figure 2The battery pack 100 includes a housing 10 and a plurality of battery cells 211. The housing 10 includes a top plate 11. The plurality of battery cells 211 can be connected in series and / or in parallel. The plurality of battery cells 211 are connected in series or in parallel to form a plurality of battery packs 20, which are housed within the housing 10.

[0023] The battery pack 100 may also include a battery management system (BMS), which monitors and manages the operating status of the battery pack, such as voltage, current, and temperature. When the battery management system detects an abnormal operating status of a cell, it will execute corresponding protection measures according to the set protection strategy. Each battery pack 20 and its corresponding BMS constitute a battery module.

[0024] The battery pack 100 also includes a conductive busbar 30, which can be used to connect two battery modules, connect the battery modules to the total output or input terminal of the battery pack 100, or connect the battery modules to the BMS control system.

[0025] refer to Figure 3 and Figure 4 The battery pack 100 also includes at least one insulating element 40. The conductive busbar 30 includes a first conductive busbar portion 31 located between the battery pack 20 and the top plate 11, with both the battery pack 20 and the top plate 11 spaced apart from the first conductive busbar portion 31. The at least one insulating element 40 includes a first insulating element 41 disposed between the first conductive busbar portion 31 and the top plate 11, with both the first conductive busbar portion 31 and the top plate 11 in contact with the first insulating element 41. The placement of the first insulating element 41 between the top plate 11 and the first conductive busbar portion 31 effectively isolates the top plate 11 from the first conductive busbar portion 31, preventing leakage caused by contact between the first conductive busbar portion 31 and the top plate 11, thereby improving electrical safety. Furthermore, since both sides of the first insulating element 41 are in contact with both the top plate 11 and the first conductive busbar portion 31, when the battery pack 100 is subjected to external vibration or impact, the first insulating element 41 experiences less friction with the top plate 11, thereby reducing wear on the first insulating element 41 and ensuring the insulation performance between the conductive busbar 30 and the housing 10.

[0026] Continue to refer to Figure 3 and Figure 4At least one insulating element 40 further includes a second insulating element 42 disposed between the first conductive bus section 31 and the battery pack 20, with both the first conductive bus section 31 and the battery pack 20 in contact with the second insulating element 42. The placement of the second insulating element 42 between the first conductive bus section 31 and the battery pack 20 effectively isolates the first conductive bus section 31 from the battery pack 20, preventing leakage caused by contact between the first conductive bus section 31 and the battery pack 20. Furthermore, since both sides of the second insulating element 42 are in contact with both the battery pack 20 and the first conductive bus section 31, the second insulating element 42 experiences less friction with the battery pack 20 when the battery pack 100 is subjected to external vibration or impact, thereby reducing wear on the second insulating element 42 and ensuring the insulation performance between the conductive bus 30 and the battery pack 20.

[0027] Furthermore, when a first insulating member 41 is provided between the top plate 11 and the first conductive bus portion 31, and a second insulating member 42 is provided between the first conductive bus portion 31 and the battery pack 20, the first insulating member 41 and the second insulating member 42 can restrict the displacement of the first conductive bus portion 31 toward the top plate 11 or the battery pack 20. Therefore, it can prevent the first conductive bus portion 31 from causing problems such as poor contact or conductivity failure due to excessive displacement, thereby improving the overall reliability and safety of the battery pack 100.

[0028] refer to Figure 2 , Figure 3 and Figure 5 Two battery packs 20 in the battery pack 100 are arranged at intervals along a first direction parallel to the top plate 11. The conductive bar 30 includes a second conductive bar portion 32 extending between the two battery packs 20. Because the second conductive bar portion 32 extends between the two battery packs 20, when an insulating member 40 is provided on the side of the second conductive bar portion 32 near the battery pack 20, the insulating member 40 is not only difficult to support, but also causes assembly difficulties. If the insulating member 40 is only provided on the side of the second conductive bar portion 32 near the top plate 11, the second conductive bar portion 32 will be deformed by the insulating member 40 due to the lack of support on the side near the battery pack 20.

[0029] To solve the above problems, in the battery pack 100 provided by this utility model, the orthographic projections of the second conductive bus portion 32 and at least one insulating member 40 on the top plate 11 do not overlap. This implementation method can reduce the installation difficulty and avoid the second conductive bus portion 32 being deformed by pressure.

[0030] As one possible implementation, refer to Figure 3 and Figure 5The battery pack 100 may include an anchor 50 located at the interval between the two battery packs 20, supporting and positioning the second conductive bus portion 32. In this way, when the battery pack 100 is subjected to external vibration or impact, the anchor 50 can limit the displacement of the second conductive bus portion 32, preventing problems such as poor contact or conductivity failure due to excessive displacement, thereby improving the overall reliability and safety of the battery pack 100. Simultaneously, since the orthographic projections of the second conductive bus portion 32 and at least one insulating member 40 on the top plate 11 do not overlap, the insulating member 40 will not interfere with the installation of the anchor 50.

[0031] It should be noted that in the accompanying drawings of this utility model, arrows X+ and X- can be used to indicate opposite sides in the first direction; arrows Y+ and Y- can be used to indicate opposite sides in the second direction; arrows Z+ and Z- can be used to indicate opposite sides in the height direction. In the following description, "the thickness of a certain component" refers to the dimension of that component in the height direction. The first direction, the second direction, and the height direction are perpendicular to each other.

[0032] refer to Figure 4 The thickness of the first conductive bus portion 31 is t (in mm), and the thickness of the first insulating component 41 is T1 (in mm). The ratio t / T1 satisfies: 0.4 ≤ t / T1 ≤ 1.6. Preferably, the ratio t / T1 can satisfy: 0.4 ≤ t / T1 ≤ 1.4. More preferably, 0.6 ≤ t / T1 ≤ 1.0. Alternatively, the ratio t / T1 can also be 0.6, 0.8, or 1.0.

[0033] If the thickness of the first insulating member 41 is smaller than the thickness of the first conductive bus portion 31, the first insulating member 41 is easily worn and damaged when the battery pack 100 is subjected to external vibration or impact, which will cause the first conductive bus portion 31 to contact the top plate 11 and cause leakage. If the thickness of the first insulating member 41 is larger than the thickness of the first conductive bus portion 31, the first insulating member 41 will occupy more internal space and will also be detrimental to the heat dissipation of the conductive bus 30 and the battery pack 20. Limiting the thickness of the first insulating member 41 and the first conductive bus portion 31 to the above-mentioned numerical range can ensure the insulation performance between the conductive bus 30 and the housing 10, and is also beneficial to space utilization and the heat dissipation efficiency of the battery pack 100.

[0034] The thickness of the second insulating element 42 is T2, in mm, and the ratio t / T2 satisfies: 0.3 ≤ t / T2 ≤ 1.5. Preferably, the ratio t / T2 can satisfy: 0.4 ≤ t / T2 ≤ 1.2. More preferably, 0.5 ≤ t / T2 ≤ 0.9. Alternatively, the ratio t / T2 can also be 0.5, 0.7, or 0.9.

[0035] If the thickness of the second insulating member 42 is smaller than the thickness of the first conductive bus portion 31, the second insulating member 42 is easily worn and damaged when the battery pack 100 is subjected to external vibration or impact. This can lead to leakage due to contact between the first conductive bus portion 31 and the battery pack 20. If the thickness of the second insulating member 42 is larger than the thickness of the first conductive bus portion 31, the second insulating member 42 will occupy more internal space and will also be detrimental to the heat dissipation of the conductive bus 30 and the battery pack 20. Limiting the thickness of the second insulating member 42 and the first conductive bus portion 31 to the above-mentioned numerical range can ensure the insulation performance between the conductive bus 30 and the battery pack 20, while also improving space utilization and the heat dissipation efficiency of the battery pack 100.

[0036] refer to Figure 2 and Figure 4 The battery cell 211 can be a cylindrical battery 211, and the axes of multiple cylindrical batteries 211 are parallel to the top plate 11, with the ratio t / T2 satisfying: 0.3≤t / T2≤1.3. Preferably, the ratio t / T2 can satisfy: 0.3≤t / T2≤1.1. More preferably, 0.3≤t / T2≤0.8. Alternatively, the ratio t / T2 can also be 0.3, 0.6, or 0.8.

[0037] Due to the arrangement of the cylindrical cells 211, the tops of the multiple cylindrical cells 211 are uneven, resulting in a small contact area between the second insulating member 42 and the multiple cylindrical cells 211. Consequently, the support provided by the second insulating member 42 to the first conductive bus portion 31 is relatively weak. Therefore, in this example, the second insulating member 42 has a larger thickness, i.e., the value of t / T2 ranges from 0.3 ≤ t / T2 ≤ 1.3, which enhances the support provided by the second insulating member 42 to the first conductive bus portion 31.

[0038] Continue to refer to Figure 1 and Figure 4 The first conductive bus section 31 extends along a first direction parallel to the top plate 11. The battery pack 20 includes a plurality of cylindrical batteries 211, the axes of which are parallel to the first direction, and the ratio t / T2 satisfies: 0.3 ≤ t / T2 ≤ 1.1. Preferably, the ratio t / T2 can satisfy: 0.3 ≤ t / T2 ≤ 0.9. More preferably, 0.3 ≤ t / T2 ≤ 0.7. Alternatively, the ratio t / T2 can also be 0.3, 0.5, or 0.7.

[0039] With this arrangement of the cylindrical battery 211, the contact area between the second insulating member 42 and the side of the cylindrical battery 211 will be smaller, thus the support of the second insulating member 42 for the first conductive bus portion 31 will be weaker. Therefore, in this example, the second insulating member 42 has a larger thickness, i.e., the value of t / T2 is in the range of 0.3 ≤ t / T2 ≤ 1.1, which will enhance the support of the second insulating member 42 for the first conductive bus portion 31.

[0040] refer to Figure 7 The first conductive bus portion 31 extends along a first direction parallel to the top plate 11. The dimension of the first conductive bus portion 31 in the first direction is L1 (in mm), and the dimension of the first insulating member 41 in the first direction is L2 (in mm). The ratio L1 / L2 satisfies: 0.8 ≤ L1 / L2 ≤ 1.05. Preferably, the ratio L1 / L2 can satisfy: 0.85 ≤ L1 / L2 ≤ 1.0. More preferably, 0.9 ≤ L1 / L2 ≤ 1.0. Alternatively, the ratio L1 / L2 can also be 0.9, 0.95, or 1.0.

[0041] If the ratio of the dimension l of the first conductive bus portion 31 in the first direction to the dimension L1 of the first insulating member 41 in the first direction is small, i.e. less than 0.8, then the dimension of the first insulating member 41 in the first direction is large. This will cause the first insulating member 41 to occupy more internal space and will also be detrimental to the heat dissipation of the conductive bus 30 and the battery pack 20. If the ratio of the dimension l of the first conductive bus portion 31 in the first direction to the dimension L1 of the first insulating member 41 in the first direction is large, i.e. greater than 1.05, then the dimension of the first insulating member 41 in the first direction is small. This will cause a part of the first conductive bus portion 31 to not contact the first insulating member 41. When the battery pack 100 is subjected to external vibration or impact, the part of the first conductive bus portion 31 that is not in contact with the first insulating member 41 will shift to the side where the top plate 11 is located, thereby causing problems such as poor contact or conductivity failure of the conductive bus 30. Furthermore, when the part of the first conductive bus portion 31 that is not in contact with the first insulating member 41 shifts excessively and comes into direct contact with the top plate 11, it may also cause leakage. Limiting the ratio of the dimension l of the first conductive bus portion 31 in the first direction to the dimension L1 of the first insulating member 41 in the first direction to the above-mentioned numerical range can ensure the overall reliability and safety of the battery pack 100, and is also beneficial to space utilization and heat dissipation efficiency of the battery pack 100.

[0042] refer to Figure 8 The second insulating element 42 has a dimension L3 in the first direction, in mm, and the ratio L1 / L3 satisfies: 0.8 ≤ L1 / L3 ≤ 1.05. Preferably, the ratio L1 / L3 can satisfy: 0.85 ≤ L1 / L3 ≤ 1.0. More preferably, 0.9 ≤ L1 / L3 ≤ 1.0. Alternatively, the ratio L1 / L3 can also be 0.9, 0.95, or 1.0.

[0043] If the ratio of the dimension l of the first conductive bus portion 31 in the first direction to the dimension L2 of the second insulating member 42 in the first direction is small, i.e. less than 0.8, then the dimension of the second insulating member 42 in the first direction is large. This will cause the second insulating member 42 to occupy more internal space and will also be detrimental to the heat dissipation of the conductive bus 30 and the battery pack 20. If the ratio of the dimension l of the first conductive bus portion 31 in the first direction to the dimension L2 of the second insulating member 42 in the first direction is large, i.e. greater than 1.05, then the dimension of the second insulating member 42 in the first direction is small. This will cause a part of the first conductive bus portion 31 to not contact the second insulating member 42. When the battery pack 100 is subjected to external vibration or impact, the part of the first conductive bus portion 31 that is not in contact with the second insulating member 42 will shift to the side where the battery pack 20 is located, thereby causing problems such as poor contact or conductivity failure of the conductive bus 30. Furthermore, when the part of the first conductive bus portion 31 that is not in contact with the second insulating member 42 shifts excessively and comes into direct contact with the battery pack 20, it may also cause leakage. Limiting the ratio of the dimension l of the first conductive bus portion 31 in the first direction to the dimension L2 of the second insulating member 42 in the first direction to the above-mentioned numerical range can ensure the overall reliability and safety of the battery pack 100, and is also beneficial to space utilization and heat dissipation efficiency of the battery pack 100.

[0044] refer to Figure 8 Two insulating films 60 are respectively attached to both ends of the battery pack 20 in the first direction. The orthographic projections of both ends of the second insulating member 42 on the battery pack 20 in the first direction fall on the two insulating films respectively. The ratio L1 / L3 satisfies: 0.85≤L1 / L3≤1.05. Preferably, the ratio t / T2 can satisfy: 0.85≤L1 / L3≤0.95. More preferably, 0.85≤L1 / L3≤0.9. Alternatively, the ratio L1 / L3 can also be 0.85, 0.88, or 0.9.

[0045] The presence of the insulating film 60 improves the insulation performance between the battery pack and the conductive busbar, especially the insulation performance of the portions of the first conductive busbar 31 that are not in contact with the second insulating member 42. Therefore, it reduces the risk of leakage from the battery pack 20 to the first conductive busbar 31, ensuring the safety of the battery pack 100. This also allows the second insulating member 42 to be smaller in the first direction, thereby reducing its space requirements.

[0046] It is understood that the present invention does not impose special restrictions on the material of the insulating film 60. For example, the material of the insulating tape can be a ceramic film.

[0047] refer to Figure 5The first conductive bus portion 31 extends along a first direction parallel to the top plate 11. The first conductive bus portion 31 has a dimension w in the second direction (in mm). The shortest distance from the first conductive bus portion 31 to the edge of the first insulating member 41 in the second direction is W1 (in mm). The ratio w / W1 satisfies: 1.5 ≤ w / W1 ≤ 5. Preferably, the ratio w / W1 can satisfy: 2 ≤ w / W1 ≤ 3.5. More preferably, 2.4 ≤ w / W1 ≤ 3. Alternatively, the ratio w / W1 can also be 2.4, 2.6, or 3.

[0048] If the ratio of the dimension w of the first conductive busbar portion 31 in the second direction to the shortest distance W1 from the first conductive busbar portion 31 to the edge of the first insulating member 41 in the second direction is small, then the distance from the first conductive busbar portion 31 to the edge of the first insulating member 41 is large. This will cause the first insulating member 41 to occupy more internal space and will also be detrimental to the heat dissipation of the conductive busbar 30 and the battery pack 20. If the ratio of the dimension w of the first conductive busbar portion 31 in the second direction to the shortest distance W1 from the first conductive busbar portion 31 to the edge of the first insulating member 41 in the second direction is large, then the distance from the first conductive busbar portion 31 to the edge of the first insulating member 41 is small. This will not only increase the difficulty of assembly but also reduce the insulation performance between the first conductive busbar portion 31 and the housing 10. Limiting the ratio of the dimension w of the first conductive busbar portion 31 in the second direction to the shortest distance W1 from the first conductive busbar portion 31 to the edge of the first insulating member 41 in the second direction to the above-mentioned value range can ensure the insulation performance between the first conductive busbar portion 31 and the housing 10, and is also beneficial to space utilization and the heat dissipation efficiency of the battery pack 100.

[0049] refer to Figure 6 The shortest distance from the first conductive bus portion 31 to the edge of the second insulating member 42 in the second direction is W2, in mm, and the ratio w / W2 satisfies: 1.5 ≤ w / W2 ≤ 5. Preferably, the ratio w / W2 can satisfy: 2 ≤ w / W2 ≤ 3.5. More preferably, 2.4 ≤ w / W2 ≤ 3. Alternatively, the ratio w / W2 can also be 2.4, 2.6, or 3.

[0050] If the ratio of the dimension w of the first conductive busbar portion 31 in the second direction to the shortest distance W2 from the first conductive busbar portion 31 to the edge of the second insulator 42 in the second direction is small, the distance from the first conductive busbar portion 31 to the edge of the second insulator 42 will be large. This will cause the second insulator 42 to occupy more internal space and will also be detrimental to the heat dissipation of the conductive busbar 30 and the battery pack 20. If the ratio of the dimension w of the first conductive busbar portion 31 in the second direction to the shortest distance W2 from the first conductive busbar portion 31 to the edge of the second insulator 42 in the second direction is large, the distance from the first conductive busbar portion 31 to the edge of the second insulator 42 will be small. This will not only increase the difficulty of assembly but also reduce the insulation performance between the first conductive busbar portion 31 and the battery pack 20. Limiting the ratio of the dimension w of the first conductive busbar portion 31 in the second direction to the shortest distance W2 from the first conductive busbar portion 31 to the edge of the second insulator 42 in the second direction to the above-mentioned value range can ensure the insulation performance between the first conductive busbar portion 31 and the battery pack 20, and is also beneficial to space utilization and the heat dissipation efficiency of the battery pack 100.

[0051] In one possible implementation, the conductive busbar 30 is covered with insulating tape. Covering the conductive busbar 30 with insulating tape further isolates the first conductive busbar portion 31 from the top plate 11 and the battery pack 20, preventing leakage caused by contact between the first conductive busbar portion 31 and the top plate 11 and the battery pack 20, thereby improving electrical safety.

[0052] It is understood that this utility model does not impose any special restrictions on the material of the insulating tape. For example, the material of the insulating tape can be selected from one or more of polyethylene glycol terephthalate (PET), polyimide (PI), polypropylene (PP), polyvinyl chloride (PVC), polyethylene (PE), and polycarbonate (PC).

[0053] As one possible implementation, the elastic modulus of the first insulating member 41 and / or the second insulating member 42 can range from 5 to 300 MPa. Preferably, the elastic modulus of the first insulating member 41 and / or the second insulating member 42 can range from 10 to 280 MPa. More preferably, the elastic modulus of the first insulating member 41 and / or the second insulating member 42 can range from 20 to 250 MPa. Alternatively, the elastic modulus of the first insulating member 41 and / or the second insulating member 42 can also be 20 MPa, 150 MPa, or 250 MPa.

[0054] As one possible implementation, the first insulating element 41 and / or the second insulating element 42 can be insulating foam. Preferably, the first insulating element 41 and / or the second insulating element 42 can be microcellular polypropylene foam (MPP). Microcellular polypropylene foam has the characteristics of light weight, excellent insulation performance, and good impact cushioning.

[0055] As one possible implementation, the material of the first insulating member 41 and / or the second insulating member 42 is selected from one or a hybrid of microporous foamed polypropylene, ethylene-vinyl acetate copolymer (EVA), and chloroprene rubber (CR).

[0056] As one possible implementation, the first insulating member 41 and / or the second insulating member 42 can be rectangular insulating pads. The first conductive bus portion 31 is generally in the form of a flat cuboid structure. Constructing the insulating member as a rectangular insulating pad, with the insulating member having a similar shape to the first conductive bus portion 31, facilitates the mating of the insulating member with the first conductive bus portion 31 and improves the ease of installation.

[0057] <Example Electrical Equipment> This utility model embodiment also provides an electrical device 200, which may include the battery pack 100 described above.

[0058] By way of example only, electrical equipment 200 can be, but is not limited to, vehicles, ships, aircraft, household appliances, and industrial equipment. For example, vehicles can be passenger cars, trucks, construction vehicles, etc.

[0059] In addition, the electrical equipment 200 can also be used for the storage, conversion and release of recyclable electrical energy.

[0060] In a non-restrictive example, refer to Figure 9 The electrical equipment 200 can be an electric vehicle 200, and the battery pack 100 can be used as a power source to provide power to the electric vehicle 200.

[0061] It should be understood that the term "comprising" and its variations used in this utility model are open-ended, meaning "including but not limited to". The term "according to" means "at least in part according to". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least another embodiment".

[0062] It should be understood that although terms such as "first" or "second" may be used in this invention to describe various elements (such as the first insulating element and the second insulating element), these elements are not defined by these terms, which are only used to distinguish one element from another.

[0063] The scope of protection of this utility model is not limited to the above embodiments. Any variations or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A battery pack, characterized in that, include: The enclosure, including the top panel; The battery pack is housed within the casing; A conductive busbar includes a first conductive busbar portion located between the battery pack and the top plate, wherein the battery pack and the top plate are spaced apart from the first conductive busbar portion; and At least one insulating element, including a first insulating element disposed between the first conductive bus portion and the top plate, wherein both the first conductive bus portion and the top plate are in contact with the first insulating element.

2. The battery pack according to claim 1, characterized in that, The at least one insulating element further includes a second insulating element disposed between the first conductive bus portion and the battery pack, wherein both the first conductive bus portion and the battery pack are in contact with the second insulating element.

3. The battery pack according to claim 1 or 2, characterized in that, The device includes two battery packs arranged at a distance along a first direction parallel to the top plate. The conductive busbar includes a second conductive busbar portion extending between the two battery packs. The orthographic projections of the second conductive busbar portion and the at least one insulating member on the top plate do not overlap.

4. The battery pack according to claim 2, characterized in that, The thickness of the first conductive bus is t in mm, the thickness of the first insulating component is T1 in mm, and the ratio t / T1 satisfies: 0.4≤t / T1≤1.6; and / or, the thickness of the second insulating component is T2 in mm, and the ratio t / T2 satisfies: 0.3≤t / T2≤1.

5.

5. The battery pack according to claim 4, characterized in that, The battery pack includes multiple cylindrical batteries, the axes of which are parallel to the top plate, and the ratio t / T2 satisfies: 0.3≤t / T2≤1.

3.

6. The battery pack according to claim 4, characterized in that, The first conductive busbar extends along a first direction parallel to the top plate. The battery pack includes a plurality of cylindrical cells, the axes of which are parallel to the first direction. The ratio t / T2 satisfies: 0.3≤t / T2≤1.

1.

7. The battery pack according to claim 2, characterized in that, The first conductive bus portion extends along a first direction parallel to the top plate, the dimension of the first conductive bus portion in the first direction is L1, in mm, the dimension of the first insulating member in the first direction is L2, in mm, and the ratio L1 / L2 satisfies: 0.8≤L1 / L2≤1.05; and / or, the dimension of the second insulating member in the first direction is L3, in mm, and the ratio L1 / L3 satisfies: 0.8≤L1 / L3≤1.

05.

8. The battery pack according to claim 7, characterized in that, The battery pack has two insulating films attached to its two ends in the first direction. The orthographic projections of the two ends of the second insulating member in the first direction onto the battery pack fall on the two insulating films respectively. The ratio L1 / L3 satisfies: 0.85≤L1 / L3≤1.

05.

9. The battery pack according to claim 2, characterized in that, The first conductive bus portion extends along a first direction parallel to the top plate, and a second direction is perpendicular to the first direction; the first conductive bus portion has a dimension w in the second direction, in mm, and the shortest distance from the first conductive bus portion to the edge of the first insulating member in the second direction is W1, in mm, with the ratio w / W1 satisfying: 1.5≤w / W1≤5; and / or, the shortest distance from the first conductive bus portion to the edge of the second insulating member in the second direction is W2, in mm, with the ratio w / W2 satisfying: 1.5≤w / W2≤5.

10. The battery pack according to claim 1, characterized in that, The conductive busbar is covered with insulating tape.

11. The battery pack according to claim 1, characterized in that, The elastic modulus of the at least one insulating component ranges from 5 to 300 MPa.

12. The battery pack according to claim 11, characterized in that, The at least one insulating element is at least one insulating foam.

13. The battery pack according to claim 12, characterized in that, The material of the at least one insulating foam is selected from microporous foamed polypropylene, ethylene-vinyl acetate copolymer or chloroprene rubber.

14. The battery pack according to claim 1, characterized in that, The at least one insulating element is at least one rectangular insulating pad.

15. An electrical appliance, characterized in that, Includes the battery pack according to any one of claims 1 to 14.

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