Battery device, battery module and battery pack

Abstract

Battery device comprising: a plurality of batteries (101) arranged in a first direction (X), an end plate (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) arranged at one end of the battery device in the first direction (X), and a protective bracket (120, 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120) arranged on the end plate (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) to protect an output terminal of the battery device, wherein the protective holder (120, 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120) has a first surface (S1) and a second surface (S2) that are adjacent to each other, the end plate (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) has a third surface (S3) and a fourth surface (S4) that are adjacent to each other, the first surface (S1) and the third surface (S3) are arranged opposite each other, and the second surface (S2) and the fourth surface (S4) face the batteries (101) in the first direction (X), wherein the fourth surface (S4) is provided with an adhesive layer, wherein the protective holder (120, 320, 420, 520, 620, 820, 920, 1020) is provided with a recess (121, 321, 421, 521, 621, 821, 921, 1021) at a connection between the first surface (S1) and the second surface (S2), and the recess (121, 321, 421, 521, 621, 821, 921, 1021) is a first recess, and / or the end plate (210, 310, 510, 710, 810, 1010) is provided with a recess (211, 311, 511, 711, 811, 1011) and the recess (211, 311, 511, 711, 811, 1011) is a second recess, and wherein a first combination or a second combination or a third combination forms a notch (130, 230, 330, 630, 730, 830), an opening of the notch (130, 230, 330, 630, 730, 830) faces the batteries (101) in the first direction (X), the first combination is the first recess (121, 621) and the third surface (S3), the second combination is the second recess (211, 711) and the first surface (S1), and the third combination is the first recess (321, 821) and the second recess (311, 811).

Description

BACKGROUND OF THE INVENTIONField of the invention

[0001] The invention relates to the technical field of batteries or accumulators, in particular to a battery device, a battery module and a battery pack. Description of the state of the art

[0002] As the safety requirements of new energy vehicles and battery devices become increasingly stringent for countries and industries, especially when the battery device is located in a hot and humid environment, the insulation and pressure resistance in the battery device should be increased, the risk of insulation failure of the battery device should be reduced, and the module environment and safety performance of the module should be improved. However, the high-voltage support structure of the existing battery device is such that a protective bracket is snapped onto and fixed on an end plate, an adhesive is applied between the end plate and the battery device, and the adhesive is easily squeezed out and overflows onto the bus bar of the output terminal and covers the bus bar, thus affecting the heat dissipation effect of the bus bar.In addition, the high-voltage holding structure of the existing battery device is prone to the formation of a water film, thus damaging the insulation and pressure resistance of the battery device and causing insulation failure in the module. Therefore, the existing battery device may no longer meet the strict requirements of current industry developments regarding insulation and pressure resistance, as well as the safety performance of the battery device. SUMMARY

[0003] According to one aspect of the invention, a battery device is provided comprising a plurality of batteries, an end plate, and a protective holder, wherein the plurality of batteries are arranged in a first direction, the end plate is arranged at one end of the battery device in the first direction, the protective holder is arranged on the end plate to protect an output terminal of the battery device, the protective holder has a first surface and a second surface that are adjacent to each other, the end plate has a third surface and a fourth surface that are adjacent to each other, the first surface and the third surface are arranged opposite each other, and the second surface and the fourth surface face the batteries in the first direction, the fourth surface is provided with an adhesive layer,the protective bracket is provided with a recess at a connection between the first surface and the second surface, wherein the recess is a first recess, and / or the end plate is provided with a recess at a connection between the third surface and the fourth surface, wherein the recess is a second recess, a first combination or a second combination or a third combination forms a notch, an opening of the notch faces the batteries in the first direction, the first combination is the first notch and the third surface, the second combination is the second notch and the first surface, and the third combination is the first notch and the second notch.

[0004] According to another aspect of the invention, a battery module is provided, wherein the battery module comprises the battery device provided by the invention.

[0005] According to yet another aspect of the invention, a battery pack is provided, the battery pack comprising the battery device provided by the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] For a better understanding of the disclosure, reference may be made to the exemplary embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may have been omitted, or in some cases, exaggerated in proportion, in order to emphasize and clearly illustrate the features described herein. In addition, related elements or components may be arranged differently, as is known in the art. Furthermore, in the drawings, like reference characters indicate like or similar parts throughout the several views. Fig. 1 shows a battery device according to an exemplary embodiment in a perspective view. Fig. 2 shows the combined structure of the end plate and the protective bracket of the Fig. 1 shown battery device in a perspective view. Fig. 3 shows the combined structure of the end plate and the protective bracket of the Fig. 1 shown battery device in an exploded view. Fig. 4 shows a portion of the structure of a battery device according to an exemplary embodiment in a schematic representation. Fig. Figure 5 shows a cross-sectional view along line AA in Fig. 4. Fig. 6 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 7 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 8 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 9 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 10 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 11 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 12 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 13 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 14 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. Fig. 15 shows a portion of the structure of a battery device according to another exemplary embodiment in a schematic representation. Fig. 16 shows a portion of the structure of a battery device according to another exemplary embodiment in a cross-sectional view. DESCRIPTION OF THE DESIGNS

[0007] The technical solutions of the exemplary embodiments of the disclosure are clearly and concisely described in conjunction with the drawings of the exemplary embodiments of the disclosure. The description proposed herein is only of the exemplary embodiments, which are for illustrative purposes only and are not intended to limit the scope of the disclosure; therefore, it is understood that various modifications and changes may be made without departing from the scope of the disclosure.

[0008] In the description of the present disclosure, the terms "first," "second," and the like are used for illustrative purposes only and are not to be construed as expressing or implying a relative meaning unless specifically defined and limited otherwise. The term "plurality" refers to two or more. The term "and / or" encompasses any and all combinations of one or more of the related recited elements.

[0009] In particular, a reference to "the" object or "an" object is intended to refer to one of a possible plurality of such objects. Unless otherwise defined or described, the terms "connect" and "attach" are to be interpreted broadly. For example, the term "connect" can mean "to firmly connect," "to detachably connect," "to integrally connect," "to electrically connect," or "to connect via a signal." The term "connect" can also mean "to connect directly" or "to connect indirectly via a means." Those skilled in the art will understand the specific meanings of the foregoing terms in the present disclosure according to particular situations.

[0010] Further, in describing the present disclosure, it is to be understood that terms denoting a spatial relationship, such as "above," "below," "within," "outside," and the like, are described based on the orientations in the figures, but are not intended to limit the exemplary embodiments of the present disclosure.

[0011] It will also be understood in context that where elements or features are provided "outside" or "inside" another element or elements, they may be provided directly "outside" or "inside" the other element or indirectly through an intermediate element "outside" or "inside" the other element or elements.

[0012] A main object of the invention is to avoid at least one of the above-mentioned disadvantages of the prior art and to provide a battery device capable of reducing overflow of the adhesive and the risk of a water film.

[0013] From the above technical solution, it can be seen that the advantages and positive effects of the battery device provided by the invention are as follows: In the battery device provided by the invention, the recess is provided at the junction between the end plate and the protective bracket, and the cutout is formed using the recess after the end plate and the protective bracket are joined, thereby significantly enhancing the holding effect of the adhesive. As a result, the holding structure of the battery device prevents the adhesive from easily overflowing, which is conducive to the overflow of the adhesive into the cutout during assembly of the battery device, and the strength of the protective bracket and the end plate during assembly is improved. At the same time, the holding structure of the battery device does not easily generate a water film, thus ensuring insulation and pressure resistance and improving safety performance. Design 1 of the battery device

[0014] Fig. 1 representatively shows a battery device provided by the invention in a perspective view. In the exemplary embodiment, the battery device provided by the invention is used for a battery pack of an electric vehicle. It will be readily understood by those skilled in the art that, in order to apply the related embodiment of the invention to other types of battery equipment, many modifications, additions, substitutions, omissions, or other changes to the following specific embodiments may be made, and these changes will still fall within the scope of the principles of the battery device provided by the invention.

[0015] As in Fig. 1, the battery device provided by the invention in the present embodiment includes a plurality of batteries 101, an end plate 110, and a protective bracket 120, wherein the plurality of batteries 101 are arranged in a first direction X. The end plate 110 is arranged at the end of the batteries 101 in the first direction X. The protective bracket 120 is arranged on the end plate 110 to protect the output terminal of the battery device. Fig. 2 to Fig. 5 are to be considered in conjunction with each other. Fig. 2 representatively shows the combined structure of the end plate 110 and the protective bracket 120 in a perspective view. Fig. 3 shows representatively the end plate 110 and the protective bracket 120 in a schematic exploded view. Fig. Figure 4 shows a representative section of the structure of the Fig. 1 shown battery device in a schematic representation. Fig. Figure 5 shows a representative cross-sectional view along line AA in Fig. 4. The structure, connection method and functional relationship of the respective main components of the battery device provided by the invention will be described in detail below in conjunction with the above-mentioned figures.

[0016] As in Fig. 1 to Fig. 5, in the present embodiment, the protective bracket 120 has a first surface S1 connected to the end plate 110 and a second surface S2 facing the batteries 101, and the end plate 110 has a third surface S3 connected to the protective bracket 120 and a fourth surface S4 facing the batteries 101. Specifically, the first surface S1 and the third surface S3 are disposed opposite each other, and in the present embodiment, the first surface S1 is in contact with the third surface S3. In other embodiments, the first surface S1 and the third surface S3 may not be in contact with each other. In addition, the second surface S2 and the fourth surface S4 face the batteries 101 in the first direction X, and the fourth surface S4 is provided with an adhesive layer.Based on this, the protective bracket 120 is provided with a recess 121 at the junction between the first surface S1 and the second surface S2. Accordingly, the recess 121 can form a notch 130 together with the third surface S3 when the protective bracket 120 is arranged on the end plate 110. Since an adhesive layer is disposed between the end plate 110 and the batteries 101, the above-described configuration enables the battery device provided by the invention to improve the holding effect of the adhesive to prevent the adhesive from overflowing onto the bus bar and affecting the bus bar. After the adhesive overflows onto the notch 130 and cures, the fastening strength of the protective bracket 120 and the end plate 110 can be increased.At the same time, the invention avoids the formation of water mist on the first surface S1 of the battery device in extreme environments such as high temperatures and high humidity, thereby reducing the risk of a water film forming after prolonged water mist and thus improving the operating performance and safety performance of this module in extreme environments such as high temperatures and high humidity.

[0017] Optionally, in the present embodiment, the end plate 110 and the protective bracket 120 can be connected to each other via a snap connection, as in Fig. 4. For example, the end plate 110 may be provided with a weight-reducing cavity 122. Based on this, the protective bracket 120 can be connected to the weight-reducing cavity 122 via a snap-in connection. The above-described configuration not only solves the problem of adhesive overflow, but also increases the bonding strength between the protective bracket 120 and the end plate 110.

[0018] As in Fig. As shown in Figure 5, in the present embodiment, the recess 121 is located at the junction between the first surface S1 and the second surface S2 of the protective bracket 120, and no recess is located at the junction between the third surface S3 and the fourth surface S4 of the end plate 110. The above-described configuration allows the protective bracket 120 to be contacted once the adhesive overflows, thereby further improving the bonding effect.

[0019] Optionally, the cross-sectional shape of the recess 121 in the present embodiment may be approximately triangular, as in Fig. 5. In other words, the recess 121 may be approximately a carved structure. In other embodiments, the cross-sectional shape of the recess may also be other shapes, such as a rectangle, a fan, etc., and is not limited to the present embodiment.

[0020] Optionally, in the present embodiment, the notch 130 may pass through two ends of the first surface S1 (and / or the third surface S3) in a second direction Y, which is perpendicular to the first direction X, as shown in Fig. 4. The above-described embodiment allows the contact area between the protective bracket 120 and the end plate 110 to be increased, and the effect of absorbing overflowing adhesive can be further optimized. In other embodiments, it is also possible for the cutout not to pass through the combined structure formed by the end plate and the protective bracket, or to be a structure consisting of multiple segments arranged at intervals, although this is not limited to the present embodiment.

[0021] Optionally, in the present embodiment, the protective holder 120 may include a high-voltage protection section 1202 and a low-voltage protection section 1201, as shown in Fig. 3, the high-voltage protection section 1202 and the low-voltage protection section 1201 may form a one-piece structure. Accordingly, the protection bracket 120 adopts an integrated structure consisting of a high-voltage section and a low-voltage section, so that the protection bracket 120 can be larger in the extending direction of the notch 130, thereby further increasing the ability of the notch 130 to absorb overflowing adhesive. Design 2 of the battery device

[0022] Based on the above detailed description of the first embodiment of the invention, the second embodiment of the battery device provided by the invention will be described below with reference to Fig. 6 described.

[0023] As in Fig. As shown in Figure 6, in the present embodiment, a recess 211 is arranged at the junction between the third surface S3 and the fourth surface S4 of an end plate 210, and no recess is arranged at the junction between the first surface S1 and the second surface S2 of a protective bracket 220. Accordingly, the recess 211, together with the first surface S1, can form a notch 230 when the protective bracket 220 is arranged on the end plate 210. Design 3 of the battery device

[0024] Based on the above detailed description of the first embodiment and the second embodiment of the invention, the third embodiment of the battery device provided by the invention will be described below with reference to Fig. 7 described.

[0025] As in Fig. As shown in Figure 7, in the present embodiment, a recess 311 is arranged at the junction between the third surface S3 and the fourth surface S4 of an end plate 310, and a recess 321 is arranged at the junction between the first surface S1 and the second surface S2 of a protective bracket 320. Accordingly, the recess 311 and the recess 321 together can form a notch 330 when the protective bracket 320 is arranged on the end plate 310.

[0026] Optionally, in the present embodiment, the cross-sectional shapes of the two notches 311 and 321 arranged on the end plate 310 and the protective bracket 320, respectively, may be symmetrical with respect to the first surface S1 (or the third surface S3), as shown in Fig. 7. Accordingly, when the protective bracket 320 is arranged on the end plate 310, the cross section of the notch 330 formed by the recess 311 and the recess 321 may be substantially a symmetrical figure based on the first surface S1 (or the second surface S2).

[0027] Based on the detailed description of the above several embodiments, it is understood that in the various possible embodiments corresponding to the embodiment concept of the battery device provided by the invention, a recess may be arranged at the junction between the first surface and the second surface, such as the first recess, and a recess such as the second recess may also be arranged at the junction between the third surface and the fourth surface.On this basis, a first combination or a second combination or a third combination forms a notch, an opening of the notch faces the batteries in a first direction, the first combination is the first recess and the third surface, the second combination is the second recess and the first surface, and the third combination is the first recess and the second recess. Design 4 of the battery device

[0028] Based on the above detailed description of the first embodiment of the invention, the fourth embodiment of the battery device provided by the invention will be described below with reference to Fig. 8 described.

[0029] As in Fig. As shown in Figure 8, in the present embodiment, a recess 421 is provided at the junction between the first surface S1 and the second surface S2 of a protective bracket 420, and no recess is provided at the junction between the third surface S3 and the fourth surface S4 of an end plate 410. Based on this, a chamfered structure 422 may be provided at the junction between the recess 421 and the second surface S2 of the protective bracket 420. The chamfered structure 422 may be a groove structure or an inclined structure, but is not limited thereto. Design 5 of the battery device

[0030] Based on the above detailed description of the third embodiment and the fourth embodiment of the invention, the fifth embodiment of the battery device provided by the invention will be described below with reference to Fig. 9 described.

[0031] As in Fig. 9, in the present embodiment, a recess 521 is arranged at the junction between the first surface S1 and the second surface S2 of a protective bracket 520, and a recess 511 is arranged at the junction between the third surface S3 and the fourth surface S4 of an end plate 510. Based on this, the junction between the recess 521 and the second surface S2 of the protective bracket 520 may have a chamfered structure 522, and the junction between the recess 511 and the fourth surface S4 of the end plate 510 may have a chamfered structure 512. In other embodiments, if the recess is provided only on the end plate, the junction between the recess and the fourth surface of the end plate may also have a chamfered structure. Design 6 of the battery device

[0032] Based on the above detailed description of the first embodiment of the invention, the sixth embodiment of the battery device provided by the invention will be described below with reference to Fig. 10 described.

[0033] As in Fig. 10, in the present embodiment, a recess 621 is arranged at the junction between the first surface S1 and the second surface S2 of a protective bracket 620, and no recess is arranged at the junction between the third surface S3 and the fourth surface S4 of an end plate 610. Based on this, the cross-sectional shape of the recess 621 may be substantially rectangular. In other words, when the protective bracket 620 is arranged on the end plate 610, the cross-sectional shape of a cutout 630 formed by the recess 621 and the third surface S3 together may be substantially rectangular. The above-described configuration enables the invention to further enhance the ability of the cutout to absorb overflowing adhesive. Design 7 of the battery device

[0034] Based on the above detailed description of the second embodiment of the invention, the seventh embodiment of the battery device provided by the invention will be described below with reference to Fig. 11 described.

[0035] As in Fig. 11, in the present embodiment, a recess 711 is arranged at the junction between the third surface S3 and the fourth surface S4 of an end plate 710, and no recess is arranged at the junction between the first surface S1 and the second surface S2 of a protective bracket 720. Based on this, the cross-sectional shape of the recess 711 may be substantially rectangular. In other words, when the protective bracket 720 is arranged on the end plate 710, the cross-sectional shape of a cutout 730 formed by the recess 711 and the first surface S1 together may be substantially rectangular. The above-described configuration enables the invention to further enhance the ability of the cutout to absorb overflowing adhesive. Design 8 of the battery device

[0036] Based on the above detailed description of the third embodiment of the invention, the eighth embodiment of the battery device provided by the invention will be described below with reference to Fig. 12 described.

[0037] As in Fig. 12, in the present embodiment, a recess 811 is arranged at the junction between the third surface S3 and the fourth surface S4 of an end plate 810, and a recess 821 is arranged at the junction between the first surface S1 and the second surface S2 of a protective bracket 820. Based on this, the cross-sectional shape of the recess 811 may be substantially rectangular, and the cross-sectional shape of the recess 821 may be substantially rectangular. In other words, when the protective bracket 820 is arranged on the end plate 810, the cross-sectional shape of a cutout 830 formed jointly by the recess 811 and the recess 821 may be substantially rectangular. The above-described configuration enables the invention to further enhance the ability of the cutout to absorb overflowing adhesive. Design 9 of the battery device

[0038] Based on the above detailed description of the sixth embodiment of the invention, the ninth embodiment of the battery device provided by the invention will be described below with reference to Fig. 13 described.

[0039] As in Fig. 13, in the present embodiment, a recess 921 is provided at the junction between the first surface S1 and the second surface S2 of a protective bracket 920, the cross-sectional shape of the recess 921 is substantially rectangular, and no recess is provided at the junction between the third surface S3 and the fourth surface S4 of an end plate 910. Based on this, a chamfered structure 922 may be provided at the junction between the recess 921 and the second surface S2 of the protective bracket 920. The chamfered structure 922 may be a groove structure or an inclined structure, but is not limited thereto. Design 10 of the battery device

[0040] Based on the above detailed description of the eighth embodiment and the ninth embodiment of the invention, the tenth embodiment of the battery device provided by the invention will be described below with reference to Fig. 14 described.

[0041] As in Fig. 14, in the present embodiment, a recess 1021 is arranged at the junction between the first surface S1 and the second surface S2 of a protective bracket 1020, the cross-sectional shape of the recess 1021 being substantially rectangular, and a recess 1011 is arranged at the junction between the third surface S3 and the fourth surface S4 of an end plate 1010, and the cross-sectional shape of the recess 1011 is substantially rectangular. Based on this, the junction between the recess 1021 and the second surface S2 of the protective bracket 1020 may have a chamfered structure 1022, and the junction between the recess 1011 and the fourth surface S4 of the end plate 1010 may have a chamfered structure 1012. Design 11 of the battery device

[0042] Based on the above detailed description of the first embodiment of the invention, the eleventh embodiment of the battery device provided by the invention will be described below with reference to Fig. 15 described.

[0043] As in Fig. 15, in the present embodiment, an end plate 1110 may not be provided with a weight-reducing recess, and a protective bracket 1120 is arranged directly on the end plate 1110. Design 12 of the battery device

[0044] Based on the above detailed description of the first embodiment of the invention, the twelfth embodiment of the battery device provided by the invention will be described below with reference to Fig. 16 described.

[0045] As in Fig.As shown in Figure 16, in the present embodiment, the second surface S2 of the protective bracket 120 may be offset from the fourth surface S4 of the end plate 110 in the first direction X. Furthermore, the second surface S2 may be farther away from the batteries 101 in the first direction X than the fourth surface S4. The above-described configuration enables the invention to better prevent the adhesive from overflowing and covering the bus bar.

[0046] It should be noted that the battery devices shown in the figures and described in this specification are only a few examples of the many types of battery devices that may employ the principles of the invention. It is clearly understood that the principles of the invention are by no means limited to any of the details of the battery devices or to any of the elements of the battery devices shown in the figures or described in this specification. Design of the battery module

[0047] Based on the above detailed description of several exemplary embodiments of the battery device provided by the invention, an exemplary embodiment of the battery module provided by the invention will be described below.

[0048] In the present embodiment, the battery module provided by the invention comprises the battery device provided by the invention and described in detail in the above embodiments.

[0049] From the above technical solution, it can be seen that the advantages and positive effects of the battery module provided by the invention are as follows: The battery module provided by the invention utilizes the battery device provided by the invention. As a result, the battery device support structure prevents the adhesive from easily overflowing, which contributes to preventing the adhesive from overflowing into the recess during battery device assembly, and improves the strength of the protective bracket and the end plate during assembly. At the same time, the battery device support structure prevents water film from easily forming, thus ensuring insulation and pressure resistance and improving safety performance.

[0050] It should be noted that the battery modules shown in the figures and described in this specification are only a few examples of the many types of battery modules that may employ the principles of the invention. It is clearly understood that the principles of the invention are by no means limited to any of the details or elements of the battery modules shown in the figures or described in this specification. Design of the battery pack

[0051] Based on the above detailed description of an exemplary embodiment of the battery module provided by the invention, an exemplary embodiment of the battery pack provided by the invention will be described below.

[0052] In the present embodiment, the battery pack provided by the invention comprises the battery module provided by the invention and described in detail in the above embodiments.

[0053] From the above technical solution, it can be seen that the advantages and positive effects of the battery pack provided by the invention are as follows: The battery pack provided by the invention uses the battery module provided by the invention. As a result, the holding structure of the battery device prevents the adhesive from easily overflowing, which contributes to preventing the adhesive from overflowing into the recess during battery device assembly, and improves the strength of the protective bracket and the end plate during assembly. At the same time, the holding structure of the battery device does not easily generate a water film, thus ensuring insulation and pressure resistance and improving safety performance.

[0054] It should be noted that the battery packs shown in the figures and described in this specification are only a few examples of the many types of battery packs that may employ the principles of the invention. It is clearly understood that the principles of the invention are by no means limited to any of the details or elements of the battery packs shown in the figures or described in this specification.

[0055] Based on the above-mentioned, in the battery device provided by the invention, a recess is provided at the junction between the end plate and the protective bracket, and a notch is formed using the recess after the end plate and the protective bracket are joined, thereby significantly enhancing the holding effect of the adhesive. As a result, the holding structure of the battery device prevents the adhesive from easily overflowing, which is conducive to the overflow of the adhesive into the notch during assembly of the battery device, and the strength of the protective bracket and the end plate during assembly is improved. At the same time, the holding structure of the battery device does not easily generate a water film, thus ensuring insulation and pressure resistance and improving safety performance.

[0056] The exemplary embodiments of the battery device, battery module, and battery pack provided by the invention have been described and / or illustrated in detail above. However, the embodiments of the invention are not limited to the specific embodiments described herein. To the contrary, the elements and / or steps of each embodiment may be used independently and separately from other elements and / or steps described herein. Each element and / or step of an individual embodiment may also be used in combination with other elements and / or steps of other embodiments. When introducing the components, elements, etc. described and / or illustrated herein, terms such as "a single," "an," "above," and "above" are used to indicate that there is one or a plurality of the components, elements, etc.The terms "containing," "comprising," and "having" are used to imply open enclosure and also to imply that there may be additional components, elements, etc., in addition to the listed components, elements, etc. In addition, terms such as "first" and "second" are used in the claims and description only as labels and do not represent numerical limitations on their subject matter.

[0057] Although the battery device, battery module, and battery pack provided by the invention are described according to various specific embodiments, those skilled in the art will recognize that the implementation of the invention may be modified within the spirit and scope of the claims.

[0058] Other embodiments of the disclosure will become apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any modifications, applications, or adaptations of the disclosure. Such modifications, applications, or adaptations follow the general principles of the disclosure and involve common knowledge or conventional art-specific means not disclosed in the present disclosure.

Claims

[1] Battery device comprising: a plurality of batteries (101) arranged in a first direction (X), an end plate (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) arranged at one end of the battery device in the first direction (X), and a protective bracket (120, 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120) arranged on the end plate (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) to protect an output terminal of the battery device, wherein the protective holder (120, 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120) has a first surface (S1) and a second surface (S2) that are adjacent to each other, the end plate (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) has a third surface (S3) and a fourth surface (S4) that are adjacent to each other, the first surface (S1) and the third surface (S3) are arranged opposite each other, and the second surface (S2) and the fourth surface (S4) face the batteries (101) in the first direction (X), wherein the fourth surface (S4) is provided with an adhesive layer, wherein the protective holder (120, 320, 420, 520, 620, 820, 920, 1020) is provided with a recess (121, 321, 421, 521, 621, 821, 921, 1021) at a connection between the first surface (S1) and the second surface (S2), and the recess (121, 321, 421, 521, 621, 821, 921, 1021) is a first recess, and / or the end plate (210, 310, 510, 710, 810, 1010) is provided with a recess (211, 311, 511, 711, 811, 1011) and the recess (211, 311, 511, 711, 811, 1011) is a second recess, and wherein a first combination or a second combination or a third combination forms a notch (130, 230, 330, 630, 730, 830), an opening of the notch (130, 230, 330, 630, 730, 830) faces the batteries (101) in the first direction (X), the first combination is the first recess (121, 621) and the third surface (S3), the second combination is the second recess (211, 711) and the first surface (S1), and the third combination is the first recess (321, 821) and the second recess (311, 811). [2] The battery device according to claim 1, wherein in the first direction (X), the second surface (S2) and the fourth surface (S4) are offset in the first direction (X). [3] Battery device according to claim 2, wherein the second surface (S2) is located further away from the batteries (101) in the first direction (X) than the fourth surface (S4). [4] Battery device according to one of claims 1 to 3, wherein the end plate (110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110) is connected to the protective holder (120, 220, 320, 420, 520, 620, 720, 820, 920, 1020, 1120) via a snap connection. [5] Battery device according to one of claims 1 to 4, wherein the first surface (S1) is in contact with the third surface (S3). [6] Battery device according to one of claims 1 to 5, wherein a cross-sectional shape of the recesses is triangular or rectangular and / or the connection between the first surface (S1) and the second surface (S2) has a chamfered structure (422, 522, 922, 1022) and / or the connection between the third surface (S3) and the fourth surface (S4) has a chamfered structure (512, 1012). [7] Battery device according to one of claims 1 to 5, wherein the notch (130, 230, 330, 630, 730, 830) passes through two ends of the first surface (S1) and / or the third surface (S3) in a second direction (Y) perpendicular to the first direction (X). [8] The battery device according to claim 7, wherein the protective holder (120) comprises a high-voltage protection section (1202) and a low-voltage protection section (1201), and the high-voltage protection section (1202) and the low-voltage protection section (1201) form an integral structure. [9] Battery module, wherein the battery module comprises the battery device according to one of claims 1 to 8. [10] A battery pack, the battery pack comprising the battery device according to any one of claims 1 to 8. [11] An electric vehicle having a battery pack according to claim 10.

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