Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment, and the battery pack comprises a battery module which is provided with a positive electrode lead-out sheet and a negative electrode lead-out sheet; and the isolation assembly comprises an isolation support, the isolation support is arranged between the positive electrode lead-out sheet and the negative electrode lead-out sheet, the isolation support defines a containing space, and insulation paste is arranged in the containing space. According to the battery pack provided by the utility model, the isolation bracket is arranged between the positive electrode lead-out sheet and the negative electrode lead-out sheet, the insulation paste is arranged in the isolation bracket, and the insulation paste has the advantages of high temperature resistance, high insulation, low density, low cost and the like, so that good physical isolation is formed, and the high-voltage safety of the battery under extreme conditions of thermal runaway and the like is ensured.

Description

Technical Field

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

[0002] At present, new energy vehicles are developing more and more rapidly, the integration degree of battery packs is also getting higher and higher, and the available internal space is very limited, resulting in difficulty in ensuring sufficient electrical clearance and creepage distance when designing high-voltage connectors.

[0003] In related technologies, a battery pack includes a positive electrode lead-out piece and a negative electrode lead-out piece. A plastic part is mostly used for simple isolation between the positive electrode lead-out piece and the negative electrode lead-out piece. However, the temperature resistance of the plastic part is poor and it will fail during thermal runaway, so the safety of the battery pack is relatively low. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a battery pack, in which an isolation bracket is arranged between the positive electrode lead-out piece and the negative electrode lead-out piece, and an insulating glue is arranged inside the isolation bracket. The insulating glue has advantages such as high temperature resistance, high insulation, low density and low cost, forming a good physical isolation and ensuring the high-voltage safety of the battery under extreme conditions such as thermal runaway.

[0005] The utility model also provides an electrical equipment including the above battery pack.

[0006] The battery pack according to the embodiment of the utility model includes: a battery module having a positive electrode lead-out piece and a negative electrode lead-out piece; an isolation assembly including an isolation bracket arranged between the positive electrode lead-out piece and the negative electrode lead-out piece, the isolation bracket defining an accommodation space, and an insulating glue is arranged in the accommodation space.

[0007] In the battery pack according to the embodiment of the utility model, the isolation bracket is arranged between the positive electrode lead-out piece and the negative electrode lead-out piece, increasing the creepage distance between the positive electrode lead-out piece and the negative electrode lead-out piece and improving the safety of the battery pack; an insulating glue is arranged inside the isolation bracket, and the insulating glue has advantages such as high temperature resistance, high insulation, low density and low cost, forming a good physical isolation and further ensuring the high-voltage safety of the battery under extreme conditions such as thermal runaway.

[0008] In some embodiments, along the height direction of the battery pack, the top surface of the isolation bracket is higher than the positive electrode lead-out piece and the negative electrode lead-out piece.

[0009] In some embodiments, the highest one of the positive electrode lead-out piece and the negative electrode lead-out piece is a first lead-out piece; the height difference H2 between the top surface of the isolation bracket and the top surface of the first lead-out piece satisfies H2≥5mm.

[0010] In some embodiments, the battery pack further includes a tray, the battery module is placed on the tray, a fixing adhesive layer is provided between the battery module and the tray, and one end of the isolation bracket facing the tray is wrapped in the fixing adhesive layer.

[0011] In some embodiments, the height difference between the bottom surface of the isolation bracket facing the tray and the top surface of the fixing adhesive layer facing away from the tray is H3, and H3 ≥ 5 mm.

[0012] In some embodiments, the positive electrode lead-out piece, the isolation component, and the negative electrode lead-out piece are arranged in sequence in the first direction. In the second direction, both ends of the isolation component protrude from the positive electrode lead-out piece, and both ends of the isolation component protrude from the negative electrode lead-out piece. The height direction, the first direction, and the second direction of the battery pack are perpendicular to each other.

[0013] In some embodiments, in the first direction, the length of the isolation component is B1, and B1 ≥ 20 mm.

[0014] In some embodiments, along the height direction of the battery pack, a first opening communicating with the accommodation space is provided on the top surface of the isolation bracket, and the top surface of the insulating adhesive is lower than the top surface of the isolation bracket.

[0015] In some embodiments, the battery pack further includes: a distribution box, both the positive electrode lead-out piece and the negative electrode lead-out piece are electrically connected to the distribution box, and the distribution box is used to distribute the input or output information of the battery module.

[0016] In some embodiments, the battery module includes a plurality of battery cells, and adjacent battery cells are connected by a first electrical connector; the battery pack further includes: a support component for supporting the first electrical connector, and the isolation bracket includes a lapping portion, and the lapping portion is lapped and supported on the support component.

[0017] In some embodiments, the support component includes a first support portion and a second support portion. A part of the first support portion extends between the positive electrode lead-out piece and the isolation component, and a part of the second support portion extends between the negative electrode lead-out piece and the isolation component, and the lapping portion is lapped and supported on the first support portion and the second support portion.

[0018] In some embodiments, at least one of the first support portion and the second support portion is provided with a stop protrusion, and the stop protrusion is located on the side of the isolation bracket facing the battery module.

[0019] In some embodiments, along the height direction of the battery pack, the stop protrusion protrudes from the top surface of the isolation bracket.

[0020] In some embodiments, in the direction away from the overlapping portion, the cross-sectional area of the isolation component gradually decreases, so as to facilitate the insertion of the isolation component between the first support portion and the second support portion.

[0021] An electrical device according to an embodiment of the present invention includes: the battery pack described in the above technical solution.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the present invention;

[0025] Figure 2 is a schematic diagram of the cooperation between the positive / negative electrode lead-out sheet and the isolation component;

[0026] Figure 3 is Figure 1 a cross-section of a partial structure of the battery pack in Figure 1 ;

[0027] Figure 4 is Figure 1 a cross-section of a partial structure of the battery pack in Figure 2 .

[0028] Reference numerals: 100, battery pack; 1, battery module; 11, positive electrode lead-out sheet; 12, negative electrode lead-out sheet; 2, isolation component; 21, isolation bracket; 211, overlapping portion; 22, insulating glue; 3, tray; 4, fixing glue layer; 5, distribution box; 6, partition; 7, cross-beam copper row; 8, support component; 81, first support portion; 82, second support portion; 83, stop projection. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] Reference is now made to Figures 1 - 4 describe the battery pack 100 according to an embodiment of the present utility model.

[0033] Referring to Figure 1 、 Figure 2 and Figure 3 According to an embodiment of the present utility model, the battery pack 100 includes a battery module 1 and an isolation assembly 2. The battery module 1 has a positive electrode lead piece 11 and a negative electrode lead piece 12, and the battery module 1 is adapted to output a voltage through the positive electrode lead piece 11 and the negative electrode lead piece 12. In order to reduce the risk of short circuit between the positive electrode lead piece 11 and the negative electrode lead piece 12, the present utility model disposes the isolation assembly 2 between the positive electrode lead piece 11 and the negative electrode lead piece 12, which can play a good isolation role for the positive electrode lead piece 11 and the negative electrode lead piece 12. By means of the isolation assembly 2, the creepage distance between the positive electrode lead piece 11 and the negative electrode lead piece 12 is increased, and the safety of the battery pack 100 is improved.

[0034] Specifically, the isolation assembly 2 includes an isolation bracket 21. The isolation bracket 21 is disposed between the positive electrode lead piece 11 and the negative electrode lead piece 12, and the isolation bracket 21 defines an accommodation space, and an insulating glue 22 is disposed in the accommodation space.

[0035] In the embodiments of the present utility model, not only the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 are isolated by the isolation bracket 21, but also the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 can be isolated by the insulating glue 22 inside the isolation bracket 21. The insulating glue 22 has advantages such as high temperature resistance, high insulation, low density, and low cost, forming a good physical isolation, effectively ensuring the high-voltage safety of the battery in extreme situations such as thermal runaway.

[0036] Therefore, the material of the isolation bracket 21 can be plastic. Even if the isolation bracket 21 fails at high temperatures, the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 can still be isolated by the insulating glue 22 inside the isolation bracket 21, ensuring the reliability of the isolation component 2. It should be understood that the isolation bracket 21 can also be made of materials such as ceramics and bakelite, and the present utility model does not limit this.

[0037] For the battery pack 100 according to the embodiments of the present utility model, the isolation bracket 21 is arranged between the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12, increasing the creepage distance between the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 and improving the safety of the battery pack 100; the insulating glue 22 is arranged inside the isolation bracket 21, and the insulating glue 22 has advantages such as high temperature resistance, high insulation, low density, and low cost, forming a good physical isolation, further ensuring the high-voltage safety of the battery in extreme situations such as thermal runaway.

[0038] Refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the battery pack 100 further includes a tray 3, and the battery module 1 is placed on the tray 3. Along the height direction of the battery pack 100, the top surface of the isolation bracket 21 is higher than the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12. It should be noted that the height direction of the battery pack 100 refers to the direction perpendicular to the tray 3.

[0039] Through the above technical solution, the top surface of the isolation bracket 21 is higher than the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12, increasing the creepage distance between the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12, reducing the risk of creepage distance failure, and further improving the safety of the battery pack 100.

[0040] Refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the highest one of the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 is the first lead-out sheet; the height difference H2 between the top surface of the isolation bracket 21 and the top surface of the first lead-out sheet is H2≥5mm.

[0041] If H2 is less than 5 mm, the top surface of the first lead-out piece will be too close to the top surface of the isolation bracket 21, and there is a risk of creepage failure. In the embodiment of the utility model, the height difference H2 between the top surface of the isolation bracket 21 and the top surface of the first lead-out piece is limited to not less than 5 mm, which further extends the creepage distance and improves the safety of the battery pack 100.

[0042] Reference Figure 1 , Figure 2 and Figure 3 In some specific embodiments, the heights of the positive lead-out sheet 11 and the negative lead-out sheet 12 are the same. In the embodiment of the utility model, the positive lead-out sheet 11 and the negative lead-out sheet 12 are both first lead-out sheets, and the height difference between the top surface of the isolation bracket 21 and the top surface of the positive lead-out sheet 11 is H2, and the height difference between the top surface of the isolation bracket 21 and the top surface of the negative lead-out sheet 12 is H2.

[0043] In some embodiments, H2 is any one of 5 mm, 5.4 mm, 6.2 mm, 6.6 mm, and 7 mm.

[0044] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the battery module 1 is placed on the tray 3 along the height direction of the battery pack 100 , a fixed adhesive layer 4 is provided between the battery module 1 and the tray 3 , and one end of the isolation bracket 21 facing the tray 3 is wrapped in the fixed adhesive layer 4 .

[0045] In the embodiment of the utility model, the battery module 1 and the isolation bracket 21 are connected to the tray 3 through the fixed adhesive layer 4, which ensures the stability of the assembly of the battery module 1 and the isolation bracket 21 and improves the reliability of the structure of the battery pack 100. In addition, one end of the isolation bracket 21 is wrapped in the fixed adhesive layer 4, which increases the contact area between the isolation bracket 21 and the fixed adhesive layer 4, further improves the stability of the isolation bracket 21, and can also increase the sealing between the isolation bracket 21 and the fixed adhesive layer 4. If a part of the battery module 1 has thermal runaway, the electrolyte leaks out. The matching method of the isolation bracket 21 and the fixed adhesive layer 4 in the embodiment of the utility model avoids the possibility of the electrolyte passing through the isolation bracket 21 and the fixed adhesive layer 4, reduces the risk of electrolyte spreading, reduces the risk of thermal runaway spreading, and further improves the overall safety of the battery pack 100.

[0046] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the height difference between the bottom surface of the isolation bracket 21 facing the tray 3 and the top surface of the fixing adhesive layer 4 facing away from the tray 3 is H3, and H3≥5mm.

[0047] Because the fixing glue layer 4 is the potting glue poured into the tray 3 during the assembly process of the battery pack 100, it is difficult to control the height of the fixing glue layer 4. If H3 is small, it is likely to result in poor reliability of the cooperation between the fixing glue layer 4 and the isolation bracket 21, and may even lead to risks between the fixing glue layer 4 and the isolation. In the embodiments of the present invention, by defining H3 to be not less than 5 mm, the reliability of the cooperation between the fixing glue layer 4 and the isolation bracket 21 is further improved. In some specific embodiments, H3 can be any one of the point values of 5 mm, 5.4 mm, 6.2 mm, 6.6 mm, and 7 mm.

[0048] Referring to Figure 2 、 Figure 3 and Figure 4 In some embodiments, the positive electrode lead-out sheet 11, the isolation component 2, and the negative electrode lead-out sheet 12 are arranged in sequence in the first direction. In the second direction, both ends of the isolation component 2 protrude beyond the positive electrode lead-out sheet 11, and both ends of the isolation component 2 protrude beyond the negative electrode lead-out sheet 12. The height direction, the first direction, and the second direction of the battery pack 100 are perpendicular to each other.

[0049] In some of the above embodiments, it is mentioned that in the height direction of the battery pack 100, both ends of the isolation component 2 protrude beyond the positive electrode lead-out sheet 11, and both ends of the isolation component 2 protrude beyond the negative electrode lead-out sheet 12. In the embodiments of the present invention, in the second direction, both ends of the isolation component 2 protrude beyond the positive electrode lead-out sheet 11, and both ends of the isolation component 2 protrude beyond the negative electrode lead-out sheet 12, further increasing the creepage distance between the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 and improving the safety of the battery pack 100.

[0050] Referring to Figure 2 、 Figure 3 and Figure 4 In some specific embodiments, both the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 are arranged at one end of the battery module 1 in the second direction. Therefore, in the second direction, the isolation component 2 has a direction towards the battery module 1 and a direction away from the battery module 1.

[0051] In the direction towards the battery module 1, the length by which the isolation component 2 protrudes beyond the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 is L1, and L1≥3 mm. In the direction away from the battery module 1, the length by which the isolation component 2 protrudes beyond the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 is L2, and L2≥3 mm.

[0052] In some specific embodiments, L1 can be any one of the point values of 3 mm, 4 mm, 5 mm, 6.6 mm, and 7 mm.

[0053] In some specific embodiments, L2 can be any one of the point values of 3 mm, 4 mm, 5 mm, 6.6 mm, and 7 mm.

[0054] Referring to Figure 2 、 Figure 3 and Figure 4 , in some embodiments, in the first direction, the length of the isolation component 2 is B1, and B1≥20 mm.

[0055] Through the above technical solution, the electrical gap between the positive electrode lead piece 11 and the negative electrode lead piece 12 is increased, and the safety of the battery pack 100 is further improved. In some specific embodiments, B1 can be any one of 20 mm, 22 mm, 25 mm, 26 mm, and 27 mm.

[0056] Referring to Figure 2 、 Figure 3 and Figure 4 , in some embodiments, along the height direction of the battery pack 100, the top surface of the isolation bracket 21 is provided with a first opening communicating with the accommodation space, and the top surface of the insulating glue 22 is lower than the top surface of the isolation bracket 21.

[0057] Since the insulating glue 22 is a potting glue poured into the accommodation space, it is difficult to control the height of the top surface of the insulating glue 22. By arranging the first opening on the top surface of the isolation bracket 21 and making the top surface of the insulating glue 22 lower than the top surface of the isolation bracket 21, the risk of the insulating glue 22 overflowing during the pouring of the insulating glue 22 is reduced. In addition, the space above the insulating glue 22 in the accommodation space can also accommodate part of the electrolyte, further reducing the risk of the electrolyte spreading to other parts of the battery module 1, and further improving the safety of the battery pack 100.

[0058] In some specific embodiments, the height difference between the top surface of the insulating glue 22 and the top surface of the isolation bracket 21 is H5, and H5≥1 mm.

[0059] In some specific embodiments, L1 can be any one of 3 mm, 4 mm, 5 mm, 6.6 mm, and 7 mm.

[0060] In some embodiments, the highest one of the positive electrode lead piece 11 and the negative electrode lead piece 12 is the first lead piece; the height difference between the top surface of the isolation bracket 21 and the top surface of the first lead piece is H2; the height difference between the top surface of the insulating glue 22 and the top surface of the isolation bracket 21 is H5, and H2≥H5.

[0061] Through the above technical solution, the top surface of the insulating glue 22 is higher than the top surface of the first lead piece to ensure the isolation effect of the insulating glue 22.

[0062] Referring to Figure 1 、 Figure 2 and Figure 3, in some embodiments, the battery pack 100 further includes: a distribution box 5, and both the positive electrode lead piece 11 and the negative electrode lead piece 12 are electrically connected to the distribution box 5. The distribution box 5 is used to distribute the input or output information of the battery module 1, ensuring the reliability of the battery pack 100.

[0063] In some specific embodiments, the tray 3 includes a first cavity and a second cavity. A partition 6 is provided between the first cavity and the second cavity. The battery module 1 is disposed in the first cavity, and the distribution box 5 is disposed in the second cavity. The battery pack 100 further includes a beam-through copper bar 7. The beam-through copper bar 7 is a copper bar passing through the partition 6. The positive electrode lead piece 11 is connected to the distribution box 5 through a beam-through copper bar 7, and the negative electrode lead piece 12 is also connected to the distribution box 5 through a beam-through copper bar 7.

[0064] In the embodiment of the present utility model, the battery module 1 and the distribution box 5 are distributed in two different cavities, reducing the influence of the thermal runaway of the battery module 1 on the distribution box 5 and improving the reliability of the battery pack 100.

[0065] In some embodiments, in the direction away from the battery module 1, the distance between the isolation component 2 and the partition 6 is L3, and 1 mm ≤ L3 ≤ 3 mm. This ensures that the isolation component 2 has a certain assembly gap and improves the convenience of assembling the isolation component 2.

[0066] Refer to Figure 2 , Figure 3 and Figure 4 , in some embodiments, the battery module includes a plurality of battery cells, and adjacent battery cells are connected by a first electrical connector; the battery pack 100 further includes: a support component 8 for supporting the first electrical connector. The isolation bracket 21 includes a lapping portion 211, and the lapping portion 211 is lapped and supported on the support component 8.

[0067] Adjacent battery cells are electrically connected by a first electrical connector. The first electrical connector needs to be welded to the positive or negative electrode of the battery cell. Before welding, the first electrical connector is positioned by the support component 8 to ensure the stability of the first electrical connector. In the embodiment of the present utility model, the support component 8 can also support the isolation bracket 21, improving the utilization rate of the support component 8, simplifying the structure of the battery pack 100, and reducing the cost of the battery pack 100.

[0068] In some embodiments, the support component 8 includes a first support portion 81 and a second support portion 82. A part of the first support portion 81 extends between the positive electrode lead piece 11 and the isolation component 2, and a part of the second support portion 82 extends between the negative electrode lead piece 12 and the isolation component 2. The lapping portion 211 is lapped and supported on the first support portion 81 and the second support portion 82.

[0069] In the embodiment of the present utility model, the isolation bracket 21 is supported by the first support portion 81 and the second support portion 82 together, further improving the stability of the isolation bracket 21.

[0070] In a specific embodiment, there are two overlapping portions 211 of the isolation bracket 21, and both of the two overlapping portions 211 are located at the top of the isolation bracket 21. In the first direction, the two overlapping portions 211 extend towards the two ends of the first direction respectively, and the two overlapping portions 211 are respectively overlapped on the first support portion 81 and the second support portion 82.

[0071] In the embodiment of the present utility model, the structure of the overlapping portion 211 is simple, reducing the cost of the isolation bracket 21.

[0072] In some embodiments, at least one of the first support portion 81 and the second support portion 82 is provided with a stop projection 83, and the stop projection 83 is located on the side of the isolation bracket 21 facing the battery module to limit the movement of the isolation bracket 21 towards the battery module 1, further improving the stability between the isolations.

[0073] In some embodiments, in the height direction of the battery pack 100, the stop projection 83 protrudes from the top surface of the isolation bracket 21, further limiting the possibility of the isolation bracket 21 moving towards the battery module 1. Specifically, the height difference between the top surface of the stop projection 83 and the top surface of the isolation bracket 21 is H4, and H4≥1mm. In some specific embodiments, H4 can be any one of 1mm, 1.5mm, 1.8mm, 2mm, 2.2mm.

[0074] In some embodiments, in the direction away from the overlapping portion 211, the cross-sectional area of the isolation component 2 gradually decreases, so as to facilitate the insertion of the isolation component 2 between the first support portion 81 and the second support portion 82, improving the assembly convenience of the isolation component 2.

[0075] In some specific embodiments, the included angle between the side wall of the isolation bracket 21 facing the positive / negative electrode lead-out piece 12 and the height direction is A1, and 1°≤A1≤2°.

[0076] If A1 is less than 1°, the convenience of inserting the isolation component 2 between the first support portion 81 and the second support portion 82 is poor; if A1 is greater than 2 degrees, the overall strength of the isolation component 2 is poor. In the embodiment of the present utility model, 1°≤A1≤2°, which not only ensures the convenience of inserting the isolation component 2 between the first support portion 81 and the second support portion 82, but also ensures the overall strength of the isolation component 2. In some specific embodiments, H4 can be any one of 1°, 1.5°, 1.8°, 2°.

[0077] Refer to Figures 1 - 4 Describe a specific embodiment in the embodiment of the present utility model.

[0078] The battery pack 100 according to the embodiment of the utility model comprises: a battery module 1 and an isolation assembly 2 , wherein the battery module 1 has a positive lead-out tab 11 and a negative lead-out tab 12 , and the battery module 1 is suitable for outputting voltage through the positive lead-out tab 11 and the negative lead-out tab 12 .

[0079] The isolation assembly 2 includes an isolation bracket 21 , which is disposed between the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12 . The isolation bracket 21 defines a receiving space, and an insulating glue 22 is disposed in the receiving space.

[0080] The material of the isolation bracket 21 is plastic, which is easy to shape and reduces the cost of the isolation component 2 .

[0081] The battery pack 100 further includes a tray 3, and the battery module 1 is placed on the tray 3. Along the height direction of the battery pack 100, the top surface of the isolation bracket 21 is higher than the positive electrode lead-out sheet 11 and the negative electrode lead-out sheet 12. It should be noted that the height direction of the battery pack 100 refers to the direction perpendicular to the tray 3.

[0082] The heights of the positive electrode lead-out tab 11 and the negative electrode lead-out tab 12 are the same, and the height difference between the top surface of the isolation bracket 21 and the top surface of the positive electrode lead-out tab 11 is H2, and H2 is 6 mm.

[0083] In the height direction of the battery pack 100, the battery module 1 is placed on the tray 3, a fixed adhesive layer 4 is provided between the battery module 1 and the tray 3, and one end of the isolation bracket 21 facing the tray 3 is wrapped in the fixed adhesive layer 4. The height difference between the bottom surface of the isolation bracket 21 facing the tray 3 and the top surface of the fixed adhesive layer 4 facing away from the tray 3 is H3, and H3 is 5 mm.

[0084] The positive lead-out sheet 11, the isolation assembly 2 and the negative lead-out sheet 12 are arranged sequentially in the first direction. In the second direction, both ends of the isolation assembly 2 protrude from the positive lead-out sheet 11, and both ends of the isolation assembly 2 protrude from the negative lead-out sheet 12. The height direction, the first direction and the second direction of the battery pack 100 are perpendicular to each other.

[0085] The positive electrode lead-out tab 11 and the negative electrode lead-out tab 12 are both disposed at one end of the battery module 1 in the second direction. Therefore, in the second direction, the isolation component 2 has a direction toward the battery module 1 and a direction away from the battery module 1 .

[0086] In the direction toward the battery module 1, the length of the protruding positive lead-out tab 11 and the negative lead-out tab 12 of the isolation component 2 is L1, and L1 is 3 mm. In the direction away from the battery module 1, the length of the protruding positive lead-out tab 11 and the negative lead-out tab 12 of the isolation component 2 is L2, and L2 is 5 mm.

[0087] In the first direction, the length of the isolation component 2 is B1, and B1 is 25 mm.

[0088] Along the height direction of the battery pack 100, the top surface of the isolation bracket 21 is provided with a first opening communicating with the accommodation space, and the top surface of the insulating adhesive 22 is lower than the top surface of the isolation bracket 21. The height difference between the top surface of the insulating adhesive 22 and the top surface of the isolation bracket 21 is H5, and H5 is 3 mm.

[0089] The battery pack 100 further includes: a distribution box 5, the positive electrode lead-out piece 11 and the negative electrode lead-out piece 12 are both electrically connected to the distribution box 5, and the distribution box 5 is used for distributing the input or output information of the battery module 1.

[0090] The tray 3 includes a first cavity and a second cavity, a partition 6 is arranged between the first cavity and the second cavity, the battery module 1 is arranged in the first cavity, the distribution box 5 is arranged in the second cavity, the battery pack 100 further includes a beam-passing copper row 7, the beam-passing copper row 7 is a copper row passing through the partition 6, the positive electrode lead-out piece 11 is connected to the distribution box 5 through a beam-passing copper row 7, and the negative electrode lead-out piece 12 is also connected to the distribution box 5 through a beam-passing copper row 7.

[0091] In the direction away from the battery module 1, the distance between the isolation component 2 and the partition 6 is L3, and L3 is 2 mm.

[0092] The battery module includes a plurality of battery cells, and adjacent battery cells are connected by a first electrical connector; the battery pack 100 further includes: a support component 8 for supporting the first electrical connector, the isolation bracket 21 includes a lapping portion 211, and the lapping portion 211 is lapped and supported on the support component 8.

[0093] The support component 8 includes a first support portion 81 and a second support portion 82, the first support portion 81 is located between the positive electrode lead-out piece 11 and the isolation component 2, the second support portion 82 is located between the negative electrode lead-out piece 12 and the isolation component 2, and the lapping portion 211 is lapped and supported on the first support portion 81 and the second support portion 82.

[0094] There are two lapping portions 211 on the isolation bracket 21, and both lapping portions 211 are located at the top of the isolation bracket 21. In the first direction, the two lapping portions 211 extend towards the two ends of the first direction respectively, and the two lapping portions 211 are respectively lapped on the first support portion 81 and the second support portion 82.

[0095] The first support portion 81 and the second support portion 82 are both provided with a stop protrusion 83, the stop protrusion 83 is located on the side of the isolation bracket 21 facing the battery module to limit the movement of the isolation bracket 21 towards the battery module 1. The height difference between the top surface of the stop protrusion 83 and the top surface of the isolation bracket 21 is H4, and H4 is 1 mm.

[0096] In the direction away from the overlapping portion 211, the cross-sectional area of the isolation component 2 gradually decreases, facilitating the insertion of the isolation component 2 between the first support portion 81 and the second support portion 82, and improving the convenience of assembling the isolation component 2.

[0097] The included angle between the side wall of the isolation bracket 21 facing the positive / negative electrode lead piece 12 and the height direction is A1, and A1 is 1°.

[0098] The electrical equipment according to the embodiment of the present invention includes: the battery pack 100 in the above technical solution.

[0099] It should be noted that the electrical equipment can be a vehicle, a ferry, an aircraft, a computer or other equipment that requires electricity, and the present application does not limit this.

[0100] For the electrical equipment according to the embodiment of the present invention, the isolation bracket 21 is arranged between the positive electrode lead piece 11 and the negative electrode lead piece 12, increasing the creepage distance between the positive electrode lead piece 11 and the negative electrode lead piece 12, and improving the safety of the battery pack 100; an insulating glue 22 is arranged inside the isolation bracket 21, and the insulating glue 22 has advantages such as high temperature resistance, high insulation, low density, and low cost, forming a good physical isolation, and further ensuring the high-voltage safety of the battery under extreme conditions such as thermal runaway.

[0101] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0102] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack (100), characterized in that, include: A battery module (1), the battery module (1) comprising a positive electrode lead-out sheet (11) and a negative electrode lead-out sheet (12); An isolation component (2), the isolation component (2) comprising an isolation bracket (21), the isolation bracket (21) being arranged between the positive electrode lead-out piece (11) and the negative electrode lead-out piece (12), the isolation bracket (21) defining a receiving space, and an insulating glue (22) being arranged in the receiving space.

2. The battery pack (100) according to claim 1, characterized in that, Along the height direction of the battery pack (100), the top surface of the isolation bracket (21) is higher than the positive electrode lead-out sheet (11) and the negative electrode lead-out sheet (12).

3. The battery pack (100) according to claim 2, characterized in that, The highest one of the positive electrode lead-out sheet (11) and the negative electrode lead-out sheet (12) is a first lead-out sheet; The height difference between the top surface of the isolation bracket (21) and the top surface of the first lead-out piece is H2, and H2 is ≥ 5 mm.

4. The battery pack (100) according to claim 1, characterized in that, The battery pack (100) further comprises a tray (3), the battery module (1) being placed on the tray (3), a fixing glue layer (4) being provided between the battery module (1) and the tray (3), and an end of the insulating bracket (21) facing the tray (3) being wrapped in the fixing glue layer (4).

5. The battery pack (100) according to claim 4, characterized in that, The height difference between the bottom surface of the insulating bracket (21) facing the tray (3) and the top surface of the fixing adhesive layer (4) facing away from the tray (3) is H3, and H3≥5mm.

6. The battery pack (100) according to claim 1, wherein, The positive electrode lead-out sheet (11), the insulating component (2) and the negative electrode lead-out sheet (12) are arranged in sequence in a first direction; in a second direction, both ends of the insulating component (2) protrude from the positive electrode lead-out sheet (11), and both ends of the insulating component (2) protrude from the negative electrode lead-out sheet (12); and the height direction of the battery pack (100), the first direction and the second direction are perpendicular to each other.

7. The battery pack (100) according to claim 6, characterized in that, In the first direction, the length of the insulating component (2) is B1, and B1 is ≥ 20 mm.

8. The battery pack (100) according to claim 1, characterized in that, Along the height direction of the battery pack (100), the top surface of the isolation bracket (21) is provided with a first opening communicating with the accommodation space, and the top surface of the insulating glue (22) is lower than the top surface of the isolation bracket (21).

9. The battery pack (100) according to claim 1, wherein, Also includes: A distribution box (5), wherein the positive electrode lead-out piece (11) and the negative electrode lead-out piece (12) are both electrically connected to the distribution box (5).

10. The battery pack (100) according to any one of claims 1-9, characterized in that, The battery module (1) comprises a plurality of battery cells, and adjacent battery cells are connected via a first electrical connector; The battery pack (100) further comprises: a support assembly (8) for supporting the first electrical connector, the insulating bracket (21) comprising an overlapping portion (211), and the overlapping portion (211) is overlapped and supported on the support assembly (8).

11. The battery pack (100) according to claim 10, characterized in that, The support assembly (8) comprises a first support portion (81) and a second support portion (82), wherein the first support portion (81) extends between the positive electrode lead-out sheet (11) and the isolation assembly (2), and the second support portion (82) extends between the negative electrode lead-out sheet (12) and the isolation assembly (2), and the overlapping portion (211) is overlapped and supported on the first support portion (81) and the second support portion (82).

12. The battery pack (100) according to claim 11, characterized in that, At least one of the first support portion (81) and the second support portion (82) is provided with a stop projection (83), and the stop projection (83) is located on a side of the isolation bracket (21) facing the battery module (1).

13. The battery pack (100) according to claim 12, characterized in that, Along the height direction of the battery pack (100), the stop projection (83) protrudes from the top surface of the isolation bracket (21).

14. The battery pack (100) according to claim 11, wherein, In a direction away from the overlapping portion (211), the cross-sectional area of the isolation component (2) gradually decreases, so as to facilitate the insertion of the isolation component (2) between the first support portion (81) and the second support portion (82).

15. An electrical device, characterized in that, Comprising: The battery pack (100) according to any one of claims 1-14.

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