Battery module and battery pack

Abstract

The utility model relates to a battery module and a battery pack. The battery module comprises an upper cover, a CCS assembly and a positive electrode identification part and / or a negative electrode identification part. The CCS assembly is fixedly connected to the inner side of the upper cover and comprises an insulating isolation plate, a positive electrode interface and a negative electrode interface. The positive electrode interface and the negative electrode interface are arranged on the edge of the CCS assembly in a central symmetry mode. The positive electrode identification part and the negative electrode identification part are arranged on the outer surface of the battery module and are respectively used for indicating the position of the positive electrode interface and the position of the negative electrode interface. Wherein the upper cover is provided with a first fool-proof part, the insulating isolation plate is provided with a second fool-proof part, and the first fool-proof part and the second fool-proof part are matched in a concave-convex mode. According to the technical scheme, the upper cover can be prevented from being reversely mounted, so that the positive electrode identification part and the negative electrode identification part are matched with the indicated interface polarity, when the battery module is assembled to form the battery pack, the problem of wrong wiring of the positive electrode and the negative electrode of the battery module can be greatly solved, and the reliability of the battery pack can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to battery modules and battery packs. Background Art

[0002] In the relevant battery module technology, the module cover covers the outside of the CCS component to play a protective role. The position of the positive and negative electrode interfaces in the CCS component is usually indicated by an identification structure set on the module cover. The module cover is usually designed to be centrally symmetrical and does not have a positive and negative electrode anti-mismatch function. When fixing the module cover and the CCS component, the operator can easily install the cover upside down, making the polarity indicated by the identification structure indicating the polarity on the module cover actually opposite to the polarity of the corresponding interface, resulting in the battery module When the battery pack is assembled, the positive and negative lines of the battery pack are connected in reverse, reducing the reliability of the battery pack. Utility Model Content

[0003] Based on this, it is necessary to provide a battery module and a battery pack to address the problem that the upper cover of the battery module is easily installed upside down.

[0004] A battery module, comprising:

[0005] Upper cover;

[0006] A CCS assembly, fixedly connected to the inner side of the upper cover, comprising an insulating isolation plate, a positive electrode interface and a negative electrode interface, wherein the positive electrode interface and the negative electrode interface are centrally symmetrically arranged at the edge of the CCS assembly; and

[0007] A positive electrode identification part and / or a negative electrode identification part, which are arranged on the outer surface of the battery module and are used to indicate the position of the positive electrode interface and the position of the negative electrode interface respectively;

[0008] Wherein, a first fool-proofing part is arranged on the upper cover, and a second fool-proofing part is arranged on the insulating isolation plate, and the first fool-proofing part and the second fool-proofing part are matched with each other in a concave-convex manner.

[0009] In some embodiments, the first fool-proofing portion includes a recessed hole portion arranged along the thickness direction of the upper cover, and the second fool-proofing portion includes a protruding portion arranged along the thickness direction of the upper cover, the protruding portion is concavely and convexly matched with the recessed hole portion, and the recessed hole portion exposes the protruding portion.

[0010] In some embodiments, the recessed hole portion includes a notch disposed at an edge position of the upper cover, and the protruding portion is protrudingly disposed at an edge position of the insulating isolation plate, and the protruding portion is concave-convexly matched with the notch.

[0011] In some embodiments, a limiting edge is provided on the insulating isolation plate, and the limiting edge is provided around the periphery of the protruding portion and forms a limiting groove between the limiting edge and the protruding portion;

[0012] The upper cover comprises a limiting folding edge, the limiting folding edge encloses the concave hole portion, and the limiting folding edge is inserted into the limiting groove along the thickness direction of the upper cover.

[0013] In some embodiments, the positive electrode identification portion is disposed on at least one of the outer surface of the upper cover and the outer surface of the protruding portion;

[0014] The negative electrode identification portion is disposed on at least one of an outer surface of the upper cover and an outer surface of the protruding portion.

[0015] In some embodiments, the insulating isolation plate is located at the same end thereof and is provided with the protrusions at two corner positions spaced apart in the length direction of the battery module, the outer surface of one of the protrusions is provided with the positive electrode identification portion, and the outer surface of the other protrusion is provided with the negative electrode identification portion;

[0016] The positive electrode interface and the negative electrode interface are arranged at the two end edges of the CCS component in the length direction of the battery module.

[0017] In some embodiments, the upper cover and the insulating isolation plate are both thin plate structures with a thickness not exceeding 0.5 mm;

[0018] The upper cover and the insulating isolation plate are blister parts.

[0019] In some embodiments, the battery module further includes an adhesive portion, wherein the adhesive portion is bonded between the upper cover and the CCS assembly.

[0020] In some embodiments, the battery module includes a module information label, and the module information label is disposed on an outer surface of the upper cover.

[0021] A battery pack, comprising:

[0022] Box;

[0023] As in any of the above embodiments, the battery module is accommodated in the box.

[0024] When assembling the upper cover and the CCS assembly, the above-mentioned battery module and battery pack can quickly adjust the relative position of the upper cover and the CCS assembly with the cooperation of the first anti-foolproof part and the second anti-foolproof part, so as to realize the rapid positioning and assembly of the upper cover and the CCS assembly. Moreover, with the cooperation of the two, the relative position of the upper cover and the CCS assembly is correct, and the upper cover will not be installed upside down, so that the relative position of the upper cover and the positive electrode interface and the negative electrode interface is accurate. If the positive electrode identification part and the negative electrode identification part are set on the upper cover, the positive electrode identification part and the negative electrode identification part can be respectively correctly positioned relative to the positive electrode interface and the negative electrode interface, so that the positive electrode identification part and the negative electrode identification part match the indicated interface polarity. When the battery module is assembled to form a battery pack, the problem of incorrect wiring of the positive and negative electrodes of the battery module can be greatly reduced, which helps to improve the reliability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0026] Figure 1 A three-dimensional diagram of the assembly of the upper cover and the CCS component in the battery module of some embodiments;

[0027] Figure 2 for Figure 1 A front view of

[0028] Figure 3 for Figure 1 Exploded diagram of

[0029] Figure 4 It is a stereoscopic diagram of the assembly of the upper cover and the CCS component in the battery module of some other embodiments;

[0030] Figure 5 for Figure 4 A front view of

[0031] Figure 6 for Figure 4 Exploded diagram of

[0032] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0033] The reference numerals in the specific implementation manner are as follows:

[0034] 10. Upper cover; 11. First foolproof part; 11a. Concave hole; a1. Notch; 12. Limit folding edge; 20. CCS assembly; 21. Insulating isolation plate; 21b. Second foolproof part; b1. Protruding part; 21f. Limiting edge; f. Limiting groove; 22. Bus; g. High-voltage interface; d. Low-voltage interface; 23. Information collection assembly; 24. Positive electrode interface; 25. Negative electrode interface; 30. Positive electrode identification part; 40. Negative electrode identification part; 50. Module information label; 60. Adhesive part. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships, if any, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0037] In addition, if present, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, if any, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the present application, if it appears, unless otherwise clearly specified and limited, a first feature “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature “above”, “above” and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature “below”, “below” and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that, if present, when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0041] In response to the problems mentioned in the background technology, the present application provides a battery module and a battery pack.

[0042] The drawings provided in this application only show the assembly of the upper cover 10 and the CCS assembly 20 included in the battery module of some embodiments. It can be understood by those skilled in the art that the battery module can also include a battery cell, a packaging structure, etc. The upper cover 10 is a part of the packaging structure, and the CCS assembly 20 and the battery cell are arranged inside the packaging structure. The packaging structure can be a closed box structure or an open frame structure, as long as it can protect the battery cell, and its specific scheme can refer to the conventional setting.

[0043] A battery module usually includes multiple cells, which are connected in series or in parallel. A cell is the smallest unit of a battery for electrochemical reactions, and usually includes a shell, an electrode assembly contained in the shell, an electrolyte injected into the shell, an insulating film wrapped around the electrode assembly, and the like. The cell can be a secondary battery or a primary battery, and the cell can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The cell can be cylindrical, flat, rectangular, or in other shapes.

[0044] The electrode assembly usually includes a diaphragm, a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet and the negative electrode sheet are separated by the diaphragm. The diaphragm can be a film layer structure that allows ions to pass through, but is not limited to polyolefin, polypropylene or polyethylene. The electrode assembly can be a wound type, a laminated type, etc.

[0045] The CCS assembly 20 mentioned in the embodiment of the present application is also called an integrated busbar, which is arranged between the battery cell and the upper cover 10. Figure 3 and Figure 6 As shown, the CCS component 20 generally refers to a flat module obtained by integrating components such as an insulating isolation plate 21, a bus 22, an information collection component 23, a positive electrode interface 24 and a negative electrode interface 25. The bus 22 can be a copper bus or an aluminum bus to realize the high-voltage series and parallel connection of each battery cell. An insulating isolation plate 21 can be provided between the bus 22 and the battery cell and / or between the bus 22 and the upper cover 10 for insulation isolation. The information collection component 23 is electrically connected to the bus 22, and it may include a circuit board, a temperature collection component, a voltage collection component, a collection harness, etc. The information collection component 23 collects battery cell information through the bus 22, and can realize functions such as temperature sampling of the battery module and battery cell voltage / current sampling. In order to facilitate wiring, the positive electrode interface 24 and the negative electrode interface 25 are usually arranged at the edge of the CCS component 20. If the insulating isolation plate 21 is disposed between the busbar 22 and the battery cell, a avoidance hole is disposed on the insulating isolation plate 21, and the busbar 22 is allowed to be electrically connected to the pole of the battery cell through the avoidance hole.

[0046] In some embodiments, Figure 3 As shown, the information acquisition component 23 and the busbar 22 are arranged on the same side of the insulating isolation plate 21 facing the upper cover 10, and the insulating isolation plate 21 is insulated and isolated between the battery cell and the busbar 22 and the information acquisition component 23. In other embodiments, the busbar 22 and the information acquisition component 23 are arranged on the other side of the insulating isolation plate 21 facing away from the upper cover 10, and the insulating isolation plate 21 is arranged between the upper cover 10 and the busbar 22 and the information acquisition component 23.

[0047] Furthermore, as 3 and Figure 6As shown, the positive electrode interface 24 and the negative electrode interface 25 both include a high voltage interface part g and a low voltage interface part d. The high voltage interface part g is directly connected to the bus 22 for transmitting high voltage electricity to the outside. The low voltage interface part d is directly connected to the information collection component 23 for transmitting low voltage signals to the outside.

[0048] The battery module of the embodiment of the present application is described in detail below.

[0049] According to some embodiments of this application, please refer to Figures 1 to 6 The battery module provided in the embodiment of the present application includes an upper cover 10, a CCS assembly 20, and a positive electrode identification portion 30 and / or a negative electrode identification portion 40. The CCS assembly 20 is fixedly connected to the inner side of the upper cover 10, and includes an insulating isolation plate 21, a positive electrode interface 24, and a negative electrode interface 25. The positive electrode interface 24 and the negative electrode interface 25 are centrally symmetrically arranged at the edge of the CCS assembly 20. The positive electrode identification portion 30 and the negative electrode identification portion 40 are arranged on the outer surface of the battery module, and are used to indicate the position of the positive electrode interface 24 and the position of the negative electrode interface 25, respectively. Among them, the upper cover 10 is provided with a first anti-foolproof portion 11, and the insulating isolation plate 21 is provided with a second anti-foolproof portion 21b, and the first anti-foolproof portion 11 is matched with the second anti-foolproof portion 21b in a concave-convex manner.

[0050] The insulating isolation plate 21 is usually a light and inexpensive plastic sheet for achieving insulation isolation. As described above, the insulating isolation plate 21 can be arranged between the battery cell and the bus bar 22, or between the bus bar 22 and the upper cover 10, and can be specifically designed according to actual conditions. For example, when the upper cover 10 is a plastic part, the insulating isolation plate 21 can be arranged only between the battery cell and the bus bar 22.

[0051] Typically, the upper cover 10 and the insulating isolation plate 21 are roughly square. The upper cover 10 can be, but is not limited to, made of metal, plastic or other materials, and the upper cover 10 is usually a thin plate structure. The CCS assembly 20 is fixed on the inner side of the upper cover 10, and the inner side of the upper cover 10 refers to the side facing the inside of the battery module in its thickness direction. The fixing method between the CCS assembly 20 and the upper cover 10 can be bonding, snapping, etc. The insulating isolation plate 21 in the CCS assembly 20 can be fixedly connected to the upper cover 10, or the bus 22 in the CCS assembly 20 can be fixedly connected to the upper cover 10, and there is no specific limitation.

[0052] The positive electrode interface 24 and the negative electrode interface 25 are centrally symmetrically arranged at the edge of the CCS assembly 20. Figure 3 and Figure 6As shown, the positive electrode interface 24 and the negative electrode interface 25 are arranged on opposite sides of the CCS component 20. With the insulating isolation plate 21 as the substrate, the busbar 22, the signal acquisition component, etc. are arranged on the insulating isolation plate 21, and the symmetric center of the positive electrode interface 24 and the negative electrode interface 25 coincides with the center of the insulating isolation plate 21.

[0053] The positive electrode interface 24 and the negative electrode interface 25 can be exposed outside the battery module for external wiring. Specifically, a closed cover can be provided at the position where the positive electrode interface 24 and the negative electrode interface 25 are exposed, and the closed cover is used to open and close the opening position of the positive electrode interface 24 and the negative electrode interface 25.

[0054] The positive electrode identification portion 30 is used to indicate the position of the positive electrode interface 24, and the negative electrode identification portion 40 is used to indicate the position of the negative electrode interface 25. Only one of the positive electrode identification portion 30 and the negative electrode identification portion 40 may be configured, or both may be configured. When the battery module is assembled to form a battery pack, the staff can quickly identify the position of the positive electrode interface 24 and / or the negative electrode interface 25 based on the positive electrode identification portion 30 and / or the negative electrode identification portion 40 to correctly connect the wires. Usually, the positive electrode identification portion 30 is arranged adjacent to the positive electrode interface 24, and the negative electrode identification portion 40 is arranged adjacent to the negative electrode interface 25.

[0055] Understandably, the positive electrode identification part 30 and the negative electrode identification part 40 are both arranged on the outer surface of the battery module to be exposed outside the battery module for quick identification by the staff. In actual use, the upper cover 10 is located at the top of the battery module. For quick identification, the positive electrode identification part 30 and the negative electrode identification part 40 are usually arranged on the outer surface of the upper cover 10. The positive electrode identification part 30 and the negative electrode identification part 40 can be text, symbols, etc. that can contain polarity information and are arranged on the outer surface of the battery module. The identification can be arranged on the outer surface of the battery module by means of engraving, stickers, etc.

[0056] The upper cover 10 is provided with a first foolproofing portion 11, and the insulating isolation plate 21 is provided with a second foolproofing portion 21b, and the first foolproofing portion 11 and the second foolproofing portion 21b are matched with each other in a concave-convex manner. It is possible that the first foolproofing portion 11 and the second foolproofing portion 21b are each configured with one or more. When both are configured with multiple portions, the two are matched with each other in a one-to-one concave-convex manner. All the first foolproofing portions 11 are non-centrally symmetrically arranged on the upper cover 10 relative to the center of the insulating isolation plate 21, and all the second foolproofing portions 21b are non-centrally symmetrically arranged on the insulating isolation plate 21 relative to the center of the insulating isolation plate 21, so as to achieve an installation foolproofing effect.

[0057] Specifically, the first foolproofing part 11 and the second foolproofing part 21b can be matched in a concave-convex manner in the thickness direction of the upper cover 10. In this way, the upper cover 10 and the CCS assembly 20 can be fixed from top to bottom, which makes it easier to assemble the two. One of the first foolproofing part 11 and the second foolproofing part 21b includes a concave part, and the other includes a convex part. The convex part can be inserted into the concave part along the thickness direction of the upper cover 10, and whether the convex part and the concave part are fixedly connected is not limited.

[0058] When assembling the upper cover 10 and the CCS assembly 20, with the cooperation of the first fool-proofing part 11 and the second fool-proofing part 21b, the relative position of the upper cover 10 and the CCS assembly 20 can be quickly corrected, and the upper cover 10 and the CCS assembly 20 can be quickly positioned and assembled. Moreover, with the cooperation of the two, the relative position of the upper cover 10 and the CCS assembly 20 is correct, and the upper cover 10 will not be installed upside down, so that the relative position of the upper cover 10 and the positive electrode interface 24 and the negative electrode interface 25 is accurate. If the positive electrode identification part 30 and the negative electrode identification part 40 are set on the upper cover 10, the upper cover 10 that will not be installed upside down can make the positive electrode identification part 30 and the negative electrode identification part 40 respectively in the correct relative position with the positive electrode interface 24 and the negative electrode interface 25, so that the positive electrode identification part 30 and the negative electrode identification part 40 match the indicated interface polarity. In this way, when the battery module is assembled to form a battery pack, the problem of incorrect wiring of the positive and negative electrodes of the battery module can be greatly reduced, which helps to improve the reliability of the battery pack.

[0059] In some embodiments, reference Figures 1 to 6 The first fool-proofing portion 11 includes a recessed hole portion 11a disposed along the thickness direction of the upper cover 10, and the second fool-proofing portion 21b includes a protruding portion b1 disposed along the thickness direction of the upper cover 10, the protruding portion b1 is concavely matched with the recessed hole portion 11a, and the recessed hole portion 11a exposes the protruding portion b1.

[0060] The concave hole 11a is in the shape of a hole and penetrates the upper cover 10 in the thickness direction of the upper cover 10. The protrusion b1 is substantially in the shape of a block or a column and extends in the thickness direction of the upper cover 10 and can be inserted into the concave hole 11a.

[0061] Since the concave hole portion 11a is in the shape of a hole, the protruding portion b1 inserted therein can be exposed. In this way, when positioning the upper cover 10 and the insulating isolation plate 21, the staff can quickly determine whether the first foolproof portion 11 and the second foolproof portion 21b are in place from top to bottom by naked eyes, which speeds up the assembly efficiency of the upper cover 10 and the CCS assembly 20 and improves the grouping efficiency of the battery module.

[0062] Specifically in the embodiment, refer to Figures 1 to 6 The concave hole portion 11a includes a notch a1 disposed at the edge of the upper cover 10, and the protruding portion b1 is protrudingly disposed at the edge of the insulating isolation plate 21, and the protruding portion b1 is matched with the notch a1 in a concave-convex manner.

[0063] The edge position is the edge position of the contour. As described above, the upper cover 10 and the insulating isolation plate 21 are usually square, the concave hole portion 11a can be specifically arranged at the corner position of the upper cover 10, and the protruding portion b1 can be specifically arranged at the corner position of the insulating isolation plate 21. The corner position is the edge position where two adjacent contour edges in the square structure intersect.

[0064] At this time, the recessed hole portion 11a is formed by utilizing the notch a1 at the edge of the upper cover 10, and the recessed hole portion 11a is easy to form and has a more reasonable layout. Moreover, the first foolproof portion 11 and the second foolproof portion 21b not only allow the upper cover 10 and the CCS assembly to be assembled in the above-mentioned thickness direction, but also allow the upper cover 10 and the CCS assembly 20 to be assembled by sliding in a direction perpendicular to the thickness direction of the upper cover 10, so that the assembly methods of the upper cover 10 and the CCS assembly 20 are more diverse.

[0065] Specifically in the embodiment, refer to Figure 7 The insulating isolation plate 21 is provided with a limiting edge 21f, which is arranged around the outer periphery of the protruding portion b1 and forms a limiting groove f with the protruding portion b1. The upper cover 10 includes a limiting folding edge 12, which encloses a concave hole portion 11a, and the limiting folding edge 12 is inserted into the limiting groove f along the thickness direction of the upper cover 10.

[0066] The limiting fold 12 is usually obtained by bending a portion of the upper cover 10. It is easy to understand that if the concave hole portion 11a is a notch a1, the limiting fold 12 is located at the edge of the upper cover 10. The limiting fold 12 is protruding toward the inner side of the upper cover 10.

[0067] The limiting edge 21f and the protruding portion b1 may be integrally formed on the insulating isolation plate 21, but is not limited to being integrally formed. The limiting edge 21f may be arranged around the protruding portion b1 in a half circle, a quarter circle, a quarter circle, a full circle, etc. A limiting groove f is formed between the limiting edge 21f and the protruding portion b1, and the limiting folded edge 12 can be inserted into the limiting groove f from top to bottom.

[0068] At this time, by inserting the limiting folding edge 12 into the limiting groove f, the position reliability of the upper cover 10 and the CCS assembly 20 can be enhanced, and the upper cover 10 and the CCS assembly 20 can be effectively limited in a plane parallel to the thickness direction of the upper cover 10.

[0069] In some embodiments, reference Figures 1 to 6 The positive electrode identification part 30 is disposed on at least one of the outer surface of the upper cover 10 and the outer surface of the protrusion b1. The negative electrode identification part 40 is disposed on at least one of the outer surface of the upper cover 10 and the outer surface of the protrusion b1.

[0070] In order to expose the positive electrode identification part 30 and the negative electrode identification part 40 outside the battery module, the positive electrode identification part 30 and the negative electrode identification part 40 can be set on the outer surface of the upper cover 10, or the positive electrode identification part 30 and the negative electrode identification part 40 can be set on the outer surface of the protrusion b1. The protrusion b1 is exposed by the concave hole part 11a, and its outer surface can be used as the outer surface of the battery module.

[0071] Generally, the positive electrode identification part 30 and the negative electrode identification part 40 are both arranged on the outer surface of the upper cover 10, or are both arranged on the outer surface of the protrusion b1. It is easy to understand that when the positive electrode identification part 30 and the negative electrode identification part 40 are arranged at the same time, two protrusions b1 can be arranged correspondingly, and the positive electrode identification part 30 is arranged on the outer surface of one protrusion b1, and the negative electrode identification part 40 is arranged on the outer surface of the other protrusion b1.

[0072] Specifically in the embodiment, refer to Figures 4 to 6 The insulating isolation plate 21 is located at the same end thereof and is provided with protrusions b1 at two corner positions spaced apart in the length direction of the battery module. A positive electrode identification portion 30 is provided on the outer surface of one of the protrusions b1, and a negative electrode identification portion 40 is provided on the outer surface of the other protrusion b1. The positive electrode interface 24 and the negative electrode interface 25 are arranged at the two end edges of the CCS assembly 20 in the length direction of the battery module.

[0073] At this time, the battery module is roughly in the shape of a cuboid. It can be understood that the positive electrode identification portion 30 and the positive electrode interface 24 are located at the same end in the length direction of the battery module, and the negative electrode identification portion 40 and the negative electrode interface 25 are located at the same other end in the length direction of the battery module. In this way, the positions of the positive electrode interface 24 and the negative electrode interface 25 can be quickly distinguished based on the positive electrode identification portion 30 and the negative electrode identification portion 40.

[0074] Understandably, at the same time, the upper cover 10 is located at the same end thereof and is provided with recessed holes 11a at two corner positions spaced apart in the length direction of the battery module to match the protrusions b1 located at the two corner positions of the insulating isolation plate 21 one by one.

[0075] In some embodiments, the upper cover 10 and the insulating isolation plate 21 are both thin plate structures. The upper cover 10 and the insulating isolation plate 21 with thin plate structures help to reduce the volume of the battery module and improve the internal space utilization of the battery module.

[0076] In some embodiments, the thickness of the upper cover 10 and the insulating isolation plate 21 does not exceed 0.5 mm. Specifically, the thickness of the upper cover 10 and the insulating isolation plate 21 can be selected as 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm and 0.5 mm. The thickness can be understood as the average value of the thickness of each part of the thin plate structure.

[0077] Specifically in the embodiment, the upper cover 10 and the insulating isolation plate 21 are both blister parts. That is, both are prepared by the blister process. The upper cover 10 and the insulating isolation plate 21 with a thin plate structure are prepared by the blister process, which is more cost-effective. Moreover, the upper cover 10 is a plastic part, which itself has an insulating function, so that a layer of insulating structure set between the bus 22 and the upper cover 10 can be saved, thereby reducing the cost of the battery module.

[0078] In some embodiments, reference Figure 3 and Figure 6 The battery module includes an adhesive portion 60, which is bonded between the upper cover 10 and the CCS assembly 20. Figure 3 and Figure 6 In the illustrated embodiment, the insulating isolation plate 21 is disposed between the busbar 22 and the battery cell, and the adhesive portion 60 is bonded between the busbar 22 and the upper cover 10. The adhesive portion 60 may be, but is not limited to, a double-sided adhesive tape. In this case, the adhesive portion 60 is used to bond the upper cover 10 and the CCS assembly 20, which not only reduces the processing cost but also is easy to implement.

[0079] In actual application, when assembling the upper cover 10 and the CCS assembly 20, the adhesive portion 60 is first set on the upper cover 10 or the CCS assembly 20, and then the upper cover 10 and the CCS assembly 20 are positioned by the first anti-foolproof portion 11 and the second anti-foolproof portion 21b, and then pressed to make the upper cover 10 and the CCS assembly 20 firmly bonded.

[0080] In some embodiments, reference Figures 1 to 6 The battery module includes a module information label 50, which is disposed on the outer surface of the upper cover 10. The module information label 50 is used to record and display relevant information of the battery module, such as model, rated voltage, rated current, cell type, etc. The module information label 50 is disposed on the outer surface of the upper cover 10, which is more eye-catching and convenient to view.

[0081] In one embodiment of the present application, the battery module includes an upper cover 10, a CCS assembly 20 and an adhesive portion 60. The CCS assembly 20 includes an insulating isolation plate 21, a positive electrode interface 24 and a negative electrode interface 25. The upper cover 10 and the insulating isolation plate 21 are both plastic thin plate structures. The positive electrode interface 24 and the negative electrode interface 25 are located at the edge of the CCS assembly 20, and are centrally symmetrically arranged at the opposite ends of the CCS assembly 20 in the length direction of the battery module. The adhesive portion 60 bonds the upper cover 10 and the CCS assembly 20. The upper cover 10 is formed with notches a1 at two corner positions formed by the same contour edge in the length direction of the battery module, and the insulating isolation plate 21 is provided with protrusions b1 at two corner positions formed by the same contour edge in the length direction of the battery module, and the protrusions b1 correspond to the notches a1 in a one-to-one concave-convex fit. The positive electrode identification part 30 is arranged on the outer surface of one of the protrusions b1, and the negative electrode identification part 40 is arranged on the outer surface of the other protrusion b1, or the positive electrode identification part 30 and the negative electrode identification part 40 are respectively arranged on the outer surface of the upper cover 10 and are arranged at intervals in the length direction of the battery module.

[0082] In addition, the present application also provides a battery pack, including a box body and the battery module in the above embodiment, wherein the battery module is accommodated in the box body.

[0083] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A battery module, characterized in that: The battery module comprises: Upper cover (10); A CCS assembly (20) is fixedly connected to the inner side of the upper cover (10), comprising an insulating isolation plate (21), a positive electrode interface (24) and a negative electrode interface (25), wherein the positive electrode interface (24) and the negative electrode interface (25) are centrally symmetrically arranged at the edge of the CCS assembly (20); and A positive electrode identification portion (30) and / or a negative electrode identification portion (40), arranged on the outer surface of the battery module, for indicating the position of the positive electrode interface (24) and the position of the negative electrode interface (25), respectively; Wherein, the upper cover (10) is provided with a first fool-proofing portion (11), and the insulating isolation plate (21) is provided with a second fool-proofing portion (21b), and the first fool-proofing portion (11) and the second fool-proofing portion (21b) are matched in a concave-convex manner.

2. The battery module according to claim 1, characterized in that: The first fool-proofing portion (11) includes a recessed hole portion (11a) arranged in a recessed manner along the thickness direction of the upper cover (10), and the second fool-proofing portion (21b) includes a protruding portion (b1) arranged in a protruding manner along the thickness direction of the upper cover (10), the protruding portion (b1) is matched with the recessed hole portion (11a), and the recessed hole portion (11a) exposes the protruding portion (b1).

3. The battery module according to claim 2, characterized in that: The recessed hole portion (11a) comprises a notch (a1) disposed at the edge of the upper cover (10); the protruding portion (b1) is disposed protrudingly at the edge of the insulating isolation plate (21); the protruding portion (b1) is matched with the notch (a1) in a concave-convex manner.

4. The battery module according to claim 2, characterized in that: The insulating isolation plate (21) is provided with a limiting edge (21f), the limiting edge (21f) is arranged around the periphery of the protruding portion (b1), and a limiting groove (f) is formed between the limiting edge (21f) and the protruding portion (b1); The upper cover (10) comprises a limiting fold (12), the limiting fold (12) encloses the concave hole portion (11a), and the limiting fold (12) is inserted into the limiting groove (f) along the thickness direction of the upper cover (10).

5. The battery module according to claim 2, characterized in that: The positive electrode identification portion (30) is arranged on at least one of the outer surface of the upper cover (10) and the outer surface of the protruding portion (b1); The negative electrode identification portion (40) is arranged on at least one of the outer surface of the upper cover (10) and the outer surface of the protruding portion (b1).

6. The battery module according to claim 5, characterized in that: The insulating isolation plate (21) is provided with the protrusions (b1) at the same end thereof and at two corner positions spaced apart in the length direction of the battery module, the positive electrode identification portion (30) being provided on the outer surface of one of the protrusions (b1), and the negative electrode identification portion (40) being provided on the outer surface of the other protrusion (b1); The positive electrode interface (24) and the negative electrode interface (25) are arranged at the two end edges of the CCS component (20) in the length direction of the battery module.

7. The battery module according to any one of claims 1 to 6, characterized in that: The upper cover (10) and the insulating isolation plate (21) are both thin plate structures; The upper cover (10) and the insulating isolation plate (21) are blister plastic parts.

8. The battery module according to any one of claims 1 to 6, characterized in that: The battery module further comprises an adhesive portion (60), wherein the adhesive portion (60) is bonded between the upper cover (10) and the CCS assembly (20).

9. The battery module according to any one of claims 1 to 6, characterized in that: The battery module comprises a module information label (50), and the module information label (50) is arranged on the outer surface of the upper cover (10).

10. A battery pack, characterized in that: include: Box; The battery module according to any one of claims 1 to 9, wherein the battery module is accommodated in the box.

Images