Battery system

Abstract

The utility model discloses a battery system. The battery system comprises a battery core stacking body, an electrode integrated assembly and an insulating cover, the electrode integrated assembly is arranged at the end part of the battery cell stacking body and is provided with a first buckling part and a first connecting part; the insulating cover is rotationally arranged on the electrode integrated assembly, a second buckling part is arranged on the insulating cover, and the second buckling part is clamped to the first buckling part, so that the insulating cover can cover the electrode integrated assembly; the insulating cover is provided with a second connecting part, and the second connecting part is connected to the first connecting part. And the insulating cover is clamped with the first clamping part on the electrode integrated assembly through the second clamping part and is also connected with the first connecting part through the second connecting part. Compared with single buckle connection, the dual connection mode can enhance the connection stability between the insulating cover and the electrode integrated assembly. When an automobile bumps or is impacted, the insulating cover can be firmly fixed, so that the risk that the insulating cover falls off is effectively reduced, and the safety of a battery system is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery equipment, especially to a battery system. BACKGROUND

[0002] In the process of battery production stacking and repair maintenance, the part of high voltage area needs to be insulated and protected. In the existing battery cell stacking process, the positive and negative electrodes between the battery cell stacks are connected by high-voltage copper bars, and plastic or insulating covers are used for insulation protection at the copper bar bolt connection. However, the insulating cover in the related art is only connected to the battery cell stack by a buckle, and the insulating cover is easy to fall off during vibration and impact, especially the stability of the buckle connection is insufficient in the state of car bumping or impact, which has a safety hazard. SUMMARY

[0003] The main purpose of the utility model is to provide a battery system, which aims to solve the technical problem of insufficient stability of the buckle connection and safety hazard in the related art.

[0004] In order to achieve the above-mentioned utility model purpose, the utility model provides a battery system.

[0005] A battery system comprises:

[0006] a battery cell stack;

[0007] an electrode integrated assembly, the electrode integrated assembly is arranged at the end of the battery cell stack, the electrode integrated assembly is provided with a first buckle part and a first connecting part; and

[0008] an insulating cover, the insulating cover is arranged on the electrode integrated assembly, the insulating cover is provided with a second buckle part, the second buckle part is connected to the first buckle part, so that the insulating cover can be arranged on the electrode integrated assembly; the insulating cover is provided with a second connecting part, and the second connecting part is connected to the first connecting part.

[0009] In one embodiment, the battery system comprises a fastener, the first connecting part is a first mounting hole, the second connecting part is a second mounting hole, and the fastener is arranged in the first mounting hole and the second mounting hole.

[0010] In one embodiment, the electrode integrated assembly comprises a first mounting side wall, the first mounting side wall is provided with the first buckle part, and the first mounting side wall extends to provide the first connecting part;

[0011] The insulating cover comprises a second mounting side wall, the second mounting side wall is located on the same side as the first mounting side wall, the second mounting side wall is provided with the second buckle part, and the second mounting side wall extends to provide the second connecting part.

[0012] In one of the embodiments, the battery system comprises a positive electrode assembly, a negative electrode assembly and an electrical connecting piece, the electrode integrated assembly comprises a positive electrode integrated piece and a negative electrode integrated piece, the positive electrode integrated piece is electrically connected with the positive electrode assembly, the negative electrode integrated piece is electrically connected with the negative electrode assembly, one end of the electrical connecting piece is electrically connected with the positive electrode integrated piece, and the other end is electrically connected with the negative electrode integrated piece.

[0013] In one of the embodiments, the insulating cover comprises a side plate, the side plate is arranged opposite to the first mounting side wall, the side plate is provided with a clearance, and the clearance is used for avoiding the electrical connecting piece.

[0014] In one of the embodiments, the inner side wall of the insulating cover is provided with a rib structure, when the insulating cover is arranged on the electrode integrated assembly, the rib structure is pressed on the surface of the electrical connecting piece.

[0015] In one of the embodiments, the battery system further comprises an elastic piece, one end of the elastic piece is connected with the electrode integrated assembly, and the other end is connected with the insulating cover, the elastic piece is used for providing an elastic force to the insulating cover to make the insulating cover close to the electrode integrated assembly.

[0016] In one of the embodiments, the elastic piece is a torsion spring.

[0017] In one of the embodiments, the battery system further comprises a limiting piece, the limiting piece is arranged on the electrode integrated assembly and located at the rotating connection between the electrode integrated assembly and the insulating cover, and the limiting piece is used for limiting the maximum rotation range of the insulating cover relative to the electrode integrated assembly.

[0018] In one of the embodiments, the battery system further comprises a rotating shaft, the rotating shaft is rotatably arranged on the electrode integrated assembly, the insulating cover is provided with a first clamping groove and a second clamping groove, and the first clamping groove and the second clamping groove are respectively clamped on two ends of the rotating shaft.

[0019] Advantages:

[0020] The utility model discloses a battery system includes the electric core stack, electrode integrated assembly and insulating cover. The electrode integrated assembly sets up at the end of electric core stack, and the electrode integrated assembly is provided with first buckle part and first connecting part. The insulating cover rotation sets up in the electrode integrated assembly, and the insulating cover is provided with second buckle part, and the second buckle part is connected in first buckle part, to make the insulating cover can cover and set up in the electrode integrated assembly, and the insulating cover is provided with second connecting part, and second connecting part is connected in first connecting part. The insulating cover not only through second buckle part and the first buckle part on the electrode integrated assembly joint, still through second connecting part and first connecting part link. Compared with single buckle connection, this dual connection mode can enhance the connection stability between the insulating cover and electrode integrated assembly. When the car is jolted or suffers the impact, the insulating cover can also firmly fixed, effectively reduces the risk of insulating cover drop, guarantees the security of battery system. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the top view of battery system of an embodiment of the utility model.

[0022] Figure 2 It is the side view of battery system of an embodiment of the utility model.

[0023] Figure 3 It is the structural schematic diagram of electric core stack of an embodiment of the utility model.

[0024] Figure 4 It is Figure 3 The close-up of A in Fig.

[0025] Figure 5 It is Figure 4 The close-up of B in Fig.

[0026] Figure 6 It is the structural schematic diagram of insulating cover of an embodiment of the utility model.

[0027] Figure 7 It is the structural schematic diagram of electric connecting piece of an embodiment of the utility model.

[0028] Figure 8 It is the structural schematic diagram of negative pole integrated piece of an embodiment of the utility model.

[0029] Figure 9 It is the structural schematic diagram of positive pole integrated piece of an embodiment of the utility model.

[0030] Among them:

[0031] 100, electric core stack;

[0032] 200, electrode integrated assembly; 210, first buckle part; 220, first connecting part; 230, first installation side wall; 240, positive electrode integrated piece; 250, negative electrode integrated piece; 260, first installation part;

[0033] 300, insulating cover; 310, second buckle part; 320, second connecting part; 330, fastener; 340, second installation side wall; 350, side plate; 351, avoiding opening; 360, reinforcing structure; 370, first clamping groove; 380, second clamping groove; 390, second installation part;

[0034] 400, electric connecting piece;

[0035] 500, elastic piece;

[0036] 600, limiting piece;

[0037] 700, rotating shaft.

[0038] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0039] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not intended to limit the utility model.

[0040] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0041] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication or two element mutual action relationship.For ordinary skilled person in the art, the above-mentioned term can be understood according to the specific meaning of the utility model.

[0042] In the utility model, unless another explicit provision and limitation, first feature is "on" or "under" second feature "on" or "under" can include first and second features direct contact, also can include first and second features is not direct contact but through the contact between other features of them.And, first feature is "on", "above" and "on" second feature includes first feature is directly above and obliquely above second feature, or just indicates that the horizontal height of first feature is higher than second feature.First feature is "under", "below" and "under" second feature includes first feature is directly below and obliquely below second feature, or just indicates that the horizontal height of first feature is less than second feature.

[0043] As Figures 1 to 5 As shown in some embodiments, a battery system includes a cell stack 100, an electrode integrated assembly 200 and an insulating cover 300.The electrode integrated assembly 200 is arranged at the end of the cell stack 100, and the electrode integrated assembly 200 is provided with a first buckle part 210 and a first connecting part 220.The insulating cover 300 is arranged on the electrode integrated assembly 200, and the insulating cover 300 is provided with a second buckle part 310, which is clamped on the first buckle part 210, so that the insulating cover 300 can be arranged on the electrode integrated assembly 200;The insulating cover 300 is provided with a second connecting part 320, and the second connecting part 320 is connected to the first connecting part 220.

[0044] The insulating cover 300 is not only clamped with the first clamping part 210 on the electrode integrated assembly 200 through the second clamping part 310, but also connected with the first connecting part 220 through the second connecting part 320. Compared with single clamping connection, the double connection mode can enhance the connection stability between the insulating cover 300 and the electrode integrated assembly 200. When the automobile is jolted or subjected to impact, the insulating cover 300 can also be firmly fixed, effectively reducing the risk of the insulating cover 300 falling off. The stable connection between the insulating cover 300 and the electrode integrated assembly 200 can ensure that the insulating cover 300 always effectively covers the electrode integrated assembly 200, maintains good insulation protection, meets the requirements of electrical clearance and creepage distance, prevents the operator from being electrocuted, reduces the battery system failure caused by insulation problems, and improves the reliability and safety of the battery system. In addition, the design of the battery system can meet the requirements of IPXXB in GB4208 and IEC61032.

[0045] Specifically, the insulating cover 300 can be provided in multiple. The electrode integrated assembly 200 can be provided in multiple. The multiple insulating covers 300 and the multiple electrode integrated assemblies 200 are one-to-one corresponding.

[0046] Specifically, the material of the insulating cover 300 can be an electrically insulating material.

[0047] Specifically, the second clamping part 310 can be a clamping hole, and the first clamping part 210 is clamped in the clamping hole.

[0048] As shown in Figure 5 In some embodiments, the battery system includes a fastener 330, the first connecting part 220 is a first mounting hole, the second connecting part 320 is a second mounting hole, and the fastener 330 is arranged in the first mounting hole and the second mounting hole. Specifically, the fastener 330 can be a screw. The first mounting hole and the second mounting hole can be threaded holes. By the thread cooperation between the screw and the threaded hole, the insulating cover 300 and the electrode integrated assembly 200 are tightly connected. When the screw is screwed into the threaded hole, the threads of the screw and the threads of the hole wall are engaged with each other, generating friction and fastening force, so that the insulating cover 300 and the electrode integrated assembly 200 are fixedly connected.

[0049] As shown in Figure 5As shown, in some embodiments, the integrated electrode assembly 200 includes a first mounting sidewall 230, which has a first snap-fit ​​portion 210 and an extended first connecting portion 220. The insulating cover 300 includes a second mounting sidewall 340, which is located on the same side as the first mounting sidewall 230. The second mounting sidewall 340 has a second snap-fit ​​portion 310 and an extended second connecting portion 320. The first connecting portion 220 and the second connecting portion 320 on the same side of the first mounting sidewall 230 and the second mounting sidewall 340 save internal space in the battery system.

[0050] In some embodiments, the battery system includes a positive electrode assembly, a negative electrode assembly, and an electrical connector 400. The integrated electrode assembly 200 includes an integrated positive electrode component 240 and an integrated negative electrode component 250. The integrated positive electrode component 240 is electrically connected to the positive electrode assembly, and the integrated negative electrode component 250 is electrically connected to the negative electrode assembly. One end of the electrical connector 400 is electrically connected to the integrated positive electrode component 240, and the other end is electrically connected to the integrated negative electrode component 250. The electrical connection between the integrated positive electrode component 240 and the integrated negative electrode component 250 allows the current generated by the positive electrode assembly to be smoothly conducted to the integrated positive electrode component 240, and the negative electrode assembly to receive the current from the integrated negative electrode component 250. The electrical connector 400 electrically connects the integrated positive electrode component 240 and the integrated negative electrode component 250 to form a complete current loop.

[0051] like Figure 7 As shown, specifically, the electrical connector 400 can be a copper busbar, through which the electrical connection of the two battery cell stacks 100 can be realized.

[0052] Specifically, the insulating cover 300 can be applied to the electrical connection between the positive electrode assembly and the positive electrode assembly 240. The insulating cover 300 can also be applied to the electrical connection between the negative electrode assembly and the negative electrode assembly 250 to prevent current leakage to the outside, thus avoiding electric shock and short circuits for personnel. When current is conducted in the positive and negative electrode connection lines inside the battery system, the insulating cover 300 acts as a barrier to prevent current from being conducted to the surrounding environment due to line damage or poor contact, ensuring the normal operation and safe use of the battery system.

[0053] like Figure 5 and Figure 6 As shown, in some embodiments, the insulating cover 300 includes a side plate 350, which is disposed opposite to the first mounting sidewall 230. The side plate 350 has a clearance opening 351 for avoiding the electrical connector 400.

[0054] It should be noted that the electrical connector 400 should not be completely covered by the insulating cover 300, otherwise it will affect the current conduction of the electrical connector 400. The side plate 350 of the insulating cover 300 is arranged opposite to the first mounting side wall 230, forming a protective structure surrounding the electrode assembly 200 and other components. An opening 351 is provided on the side plate 350 to ensure that the insulating cover 300 effectively insulates and protects other critical parts while providing space for the electrical connector 400, so that the electrical connector 400 is not obstructed by the insulating cover 300, thereby enabling the electrical connector 400 to work normally and ensuring the normal transmission of current in the battery system.

[0055] In some embodiments, a rib structure 360 ​​is provided on the inner sidewall of the insulating cover 300. When the insulating cover 300 is placed on the electrode integral assembly 200, the rib structure 360 ​​presses against the surface of the electrical connector 400.

[0056] It should be noted that the rib structure 360 ​​presses tightly against the surface of the electrical connector 400, maintaining this pressing state. By increasing the contact pressure between the rib structure 360 ​​and the electrical connector 400, the possibility of loosening of the electrical connector 400 under vibration or other external forces is reduced, thereby further ensuring the stability of the electrical connection. At the same time, the presence of the rib structure 360 ​​increases the friction between the insulating cover 300 and the electrical connector 400, further preventing displacement of the electrical connector 400 and more firmly fixing the electrical connector 400 between the insulating cover 300 and the electrode assembly 200.

[0057] like Figure 5 As shown, in some embodiments, the battery system further includes an elastic element 500, one end of which is connected to the electrode assembly 200 and the other end of which is connected to the insulating cover 300. The elastic element 500 is used to provide an elastic force to the insulating cover 300 near the electrode assembly 200. Specifically, the elastic element 500 is a torsion spring.

[0058] It should be noted that the torsional spring has elastic potential energy, one end of the torsional spring is connected to the electrode integrated assembly 200, and the other end is connected to the insulating cover 300. When the torsional spring is in the installed state, it will be pre-torsioned by a certain angle, thereby storing elastic potential energy. When the insulating cover 300 is not subjected to external force, the torsional spring will release the elastic potential energy according to the tendency of restoring to the original state, thereby generating an elastic force to the insulating cover 300 to provide the electrode integrated assembly 200. The force pushes the insulating cover 300 to automatically rotate towards the electrode integrated assembly 200 until the insulating cover 300 covers the electrode integrated assembly 200, thereby achieving protection of the electrode integrated assembly 200. In actual operation, the staff may forget to cover the insulating cover 300, which will expose the electrode integrated assembly 200 and cause great safety hazards. In the technical solution, the torsional spring can automatically cover the insulating cover 300 on the electrode integrated assembly 200 without human operation, thereby effectively avoiding the risk of electric shock caused by the insulating cover 300 not being covered, preventing short circuit and other faults caused by foreign matter contacting the electrode integrated assembly 200, and improving the safety of the battery system. In addition, compared with the traditional technology which only relies on buckling fixation, there is a possibility of missing installation after maintenance and disassembly. The design can be disassembled for maintenance after the second buckle part 310 is flipped, without the need for complete disassembly, and the torsional spring plays a role in automatically closing the cover to preliminarily protect the total positive and negative electrode.

[0059] As shown in Figure 5 and Figure 6 , specifically, the motor integrated assembly 200 is provided with a first mounting portion 260, and one end of the torsional spring is mounted on the first mounting portion 260. The insulating cover 300 is provided with a second mounting portion 390, and the other end of the torsional spring is mounted on the second mounting portion 390.

[0060] As shown in Figure 8 , in some embodiments, the battery system further comprises a limiting piece 600, which is arranged on the electrode integrated assembly 200 and located at the rotating connection between the electrode integrated assembly 200 and the insulating cover 300. The limiting piece 600 is used to limit the maximum angular range of rotation of the insulating cover 300 relative to the electrode integrated assembly 200. Specifically, the rotation angle of the insulating cover 300 is 0-120°.

[0061] When the insulating cover 300 rotates to a certain angle away from the electrode assembly 200, the limiting member 600 abuts against the insulating cover 300 and restricts its further rotation, thereby limiting the maximum rotation angle of the insulating cover 300 relative to the electrode assembly 200 and ensuring that the rotation range of the insulating cover 300 is between 0-120°. Excessive rotation of the insulating cover 300 may damage the elastic element 500 connected to the electrode assembly 200, affecting the structural stability and service life of the battery system. By limiting the rotation angle of the insulating cover 300, the limiting member 600 prevents the elastic element 500 from being overstretched or twisted due to excessive rotation, thus extending the service life of the elastic element 500.

[0062] Specifically, the limiting component 600 can be a limiting rib.

[0063] like Figure 9 As shown, in one embodiment, the battery system further includes a rotating shaft 700, which is rotatably mounted on the integrated electrode assembly 200. The insulating cover 300 has a first slot 370 and a second slot 380, which are respectively engaged at both ends of the rotating shaft 700. When an external force is applied to the insulating cover 300, the insulating cover 300 drives the rotating shaft 700 to rotate via the first slot 370 and the second slot 380, thereby realizing the opening and closing action of the insulating cover 300 relative to the integrated electrode assembly 200. Specifically, the rotating shaft 700 is located at the rotatable connection between the integrated electrode assembly 200 and the insulating cover 300.

[0064] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A battery system, characterized in that, include: Cell stack; An integrated electrode assembly is disposed at the end of the battery cell stack, and the integrated electrode assembly is provided with a first snap-fit ​​portion and a first connecting portion; and An insulating cover is rotatably mounted on an integrated electrode assembly. The insulating cover has a second latching part that engages with a first latching part, allowing the insulating cover to cover the integrated electrode assembly. The insulating cover also has a second connecting part that connects to the first connecting part.

2. The battery system according to claim 1, characterized in that, The battery system includes fasteners, the first connecting portion is a first mounting hole, the second connecting portion is a second mounting hole, and the fasteners pass through the first mounting hole and the second mounting hole.

3. The battery system according to claim 1, characterized in that, The integrated electrode assembly includes a first mounting sidewall, the first mounting sidewall being provided with the first snap-fit ​​portion, and the first mounting sidewall extending to provide the first connecting portion; The insulating cover includes a second mounting sidewall, which is located on the same side as the first mounting sidewall. The second mounting sidewall is provided with a second snap-fit ​​portion, and the second mounting sidewall extends to provide a second connecting portion.

4. The battery system according to claim 3, characterized in that, The battery system includes a positive electrode assembly, a negative electrode assembly, and an electrical connector. The integrated electrode assembly includes an integrated positive electrode component and an integrated negative electrode component. The integrated positive electrode component is electrically connected to the positive electrode assembly, and the integrated negative electrode component is electrically connected to the negative electrode assembly. One end of the electrical connector is electrically connected to the integrated positive electrode component, and the other end is electrically connected to the integrated negative electrode component.

5. The battery system according to claim 4, characterized in that, The insulating cover includes a side plate, which is disposed opposite to the first mounting side wall. The side plate has a clearance opening for avoiding the electrical connector.

6. The battery system according to claim 4, characterized in that, The inner wall of the insulating cover is provided with a rib structure. When the insulating cover is placed on the electrode assembly, the rib structure presses against the surface of the electrical connector.

7. The battery system according to claim 1, characterized in that, The battery system also includes an elastic element, one end of which is connected to the integrated electrode assembly and the other end of which is connected to the insulating cover. The elastic element is used to provide an elastic force to the insulating cover near the integrated electrode assembly.

8. The battery system according to claim 7, characterized in that, The elastic element is a torsion spring.

9. The battery system according to claim 1, characterized in that, The battery system also includes a limiting member disposed on the integrated electrode assembly and located at the rotational connection between the integrated electrode assembly and the insulating cover. The limiting member is used to limit the range of rotation of the insulating cover relative to the integrated electrode assembly at the maximum angle.

10. The battery system according to claim 1, characterized in that, The battery system also includes a rotating shaft, which is rotatably mounted on the integrated electrode assembly. The insulating cover has a first slot and a second slot, which are respectively engaged at both ends of the rotating shaft.

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