Integrated battery frame and battery

Abstract

The utility model provides an integrated battery frame and a battery, the integrated battery frame comprises a battery cell frame, the battery cell frame comprises a rectangular frame body with a containing space in the middle, and the rectangular frame body is provided with a pole mounting hole; the pole comprises a first pole piece and a second pole piece which are connected in sequence, and the sectional area of the second pole piece is larger than that of the first pole piece; the mounting assembly is used for fixing the pole on the pole mounting hole; due to the fact that the positions, corresponding to the two large faces of the battery cell, of the battery cell frame are the opening ends, the battery cell can be conveniently and rapidly placed in the rectangular frame body and conveniently placed into a shell, and meanwhile the pole columns can be conveniently and rapidly installed in the pole column installation holes through the installation assemblies. And secondly, the tab can be directly welded with one end of the pole in the battery cell frame, the actual welding condition of the pole and the tab can be observed through naked eyes or machine vision in the welding process, the condition of insufficient welding or explosion welding can be found in time, and the yield of the battery is effectively improved.

Description

Technical Field

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

[0002] With the continuous development of technology, users' requirements for the energy density of new energy batteries have increased. Currently, for conventional battery cells, the cover plate needs to be welded to the battery housing first, and finally the pole column needs to be welded to the pole ear. This structure often requires a relatively long reserved length for the pole ear, but the long pole ear length will affect the energy density of the battery. At the same time, when the battery cover plate is installed, the pole ear bends to transmit force, resulting in the displacement of the battery cell. Secondly, this structure has high requirements for welding. Currently, laser welding is commonly used to penetrate the pole column and the pole ear to weld the two together. However, this welding method cannot observe the actual welding situation of the pole column and the pole ear through the naked eye or machine vision. If there is internal false welding or explosion welding, it is difficult to detect, which has a great adverse impact on the control of the battery yield rate, and the defective rate is too high. Therefore, how to overcome the above existing technical problems and defects has become a key problem to be solved. Summary of the Utility Model

[0003] In view of the problems of high existing welding difficulty and too high battery defective rate, the utility model provides an integrated battery frame and a battery.

[0004] The technical solutions adopted by the utility model to solve the above technical problems are as follows:

[0005] On the one hand, the utility model provides an integrated battery frame, including

[0006] a battery cell frame, including a rectangular frame body with an accommodation space in the middle, and pole column mounting holes are provided on the rectangular frame body;

[0007] a pole column, the pole column includes a first pole column member and a second pole column member connected in sequence, the cross-sectional area of the second pole column member is larger than that of the first pole column member, and the cross-sectional area of the first pole column member is 15 mm 2 -300 mm 2 ;

[0008] and a mounting component for fixing the pole column on the pole column mounting hole.

[0009] Optionally, the mounting component includes

[0010] a connecting piece, which is located outside the battery cell frame and is fixedly connected to the first pole column member passing through the pole column mounting hole;

[0011] a first insulating member, which is arranged on one end face of the pole column mounting hole and is located between the connecting piece and the battery cell frame;

[0012] A second insulating member is disposed at the other end face of the pole post mounting hole, between the second pole post member of the pole post and the battery cell frame;

[0013] and a first sealing ring sleeved on the first pole post member of the pole post, between the battery cell frame and the second pole post member.

[0014] Optionally, a first groove for the second pole post member to be embedded is provided on the second insulating member, and a first through hole is provided in the first groove. When the first pole post member of the pole post is fixed to the connecting piece, the second pole post member is embedded in the first groove, and the first sealing ring sleeved on the first pole post member is pressed into the first through hole.

[0015] Optionally, the first insulating member includes a substrate, a second groove provided on one side surface of the substrate for the connecting piece to be embedded, and a second through hole provided in the second groove and penetrating the substrate. The first pole post member of the pole post passes through the second through hole and is fixed to the connecting piece located in the second groove.

[0016] Optionally, the first insulating member further includes a sleeve provided on the other side surface of the substrate. The second through hole communicates with the central hole of the sleeve. When the first pole post member of the pole post is fixed to the connecting piece, the sleeve is inserted into the pole post mounting hole and abuts against the first sealing ring located on the other side of the pole post mounting hole.

[0017] Optionally, the first sealing ring is sleeved on the first pole post member. The first sealing ring has a first sealing surface and a second sealing surface oppositely arranged along the setting direction of the first pole post member. The first sealing surface abuts against the inner side surface of the pole post mounting hole of the battery cell frame and the end surface of the sleeve of the first insulating member, and the second sealing surface abuts against the top surface of the second pole post member.

[0018] Optionally, a third through hole for the first pole post member of the pole post to be inserted is provided on the connecting piece. The first pole post member of the pole post is inserted into the third through hole and is welded and fixed to the connecting piece.

[0019] Optionally, a liquid injection hole on the same side as the pole post mounting hole is further provided on the rectangular frame of the battery cell frame; the integrated battery frame further includes a second sealing ring provided at the liquid injection hole and a liquid injection rivet for plugging the liquid injection hole.

[0020] Optionally, a pressure relief hole is further provided on the rectangular frame of the battery cell frame, and the integrated battery frame further includes an explosion-proof valve provided at the pressure relief hole.

[0021] On the other hand, the present utility model provides a battery, which includes the above-mentioned integrated battery frame, battery cells disposed within the integrated battery frame, and a first housing and a second housing disposed on both sides of the integrated battery frame. The first housing and the second housing are welded to both side surfaces of the battery cell frame of the integrated battery frame. The battery cell has tabs, and the tabs are electrically connected to the battery poles of the integrated battery frame.

[0022] According to the integrated battery frame and battery provided by the present utility model, the positions of the battery cell frame corresponding to the two larger surfaces of the battery cell are open ends. Therefore, it is convenient to quickly place the battery cell into the rectangular frame, facilitating the battery cell to be put into the housing. At the same time, it is convenient to quickly install the battery poles into the battery pole mounting holes through the mounting components. Secondly, the tabs of the present utility model can be directly welded to one end of the battery poles within the battery cell frame. The actual welding situation of the battery poles and the tabs can be observed by the naked eye or machine vision during this welding process, and the situation of false welding or explosion welding can be detected in a timely manner, effectively improving the control of the battery yield. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the description of the embodiments of the present utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of a battery cell frame provided by an embodiment of the present utility model;

[0025] Figure 2 It is a schematic structural diagram of a battery pole provided by an embodiment of the present utility model;

[0026] Figure 3 It is an exploded schematic diagram of a mounting component in the integrated battery frame provided by an embodiment of the present utility model;

[0027] Figure 4 It is a schematic structural diagram of a first insulating member in the integrated battery frame provided by an embodiment of the present utility model;

[0028] Figure 5 It is an exploded schematic diagram of a battery provided by an embodiment of the present utility model;

[0029] The reference numerals in the accompanying drawings of the specification are as follows:

[0030] 1 - Battery cell frame; 11 - Terminal post mounting hole; 12 - Liquid injection port; 13 - Second sealing ring; 14 - Liquid injection rivet; 15 - Explosion-proof valve; 2 - Terminal post; 21 - First terminal post part; 211 - First section; 212 - Second section; 22 - Second terminal post part; 3 - Mounting assembly; 31 - Connecting piece; 311 - Third through hole; 32 - First insulating part; 321 - Substrate; 322 - Second groove; 323 - Second through hole; 324 - Sleeve; 33 - Second insulating part; 331 - First groove; 332 - First through hole; 34 - First sealing ring; 341 - First sealing surface; 342 - Second sealing surface; 4 - Battery; 41 - Battery cell; 42 - Tab; 43 - First housing; 44 - Second housing. Detailed implementation manners

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "mounting", "connecting" and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] As Figures 1 - 3 shown, in an embodiment, on the one hand, the present utility model provides an integrated battery 4 frame, including

[0035] A battery cell frame 1, including a rectangular frame body with an accommodation space in the middle, and a terminal post mounting hole 11 is provided on the rectangular frame body;

[0036] Terminal post 2, the terminal post 2 includes a first terminal post member 21 and a second terminal post member 22 connected in sequence, the cross-sectional area of the second terminal post member 22 is larger than that of the first terminal post member 21, and the cross-sectional area of the first terminal post member 21 is 15mm 2 -300mm 2 ;

[0037] and a mounting assembly 3 for fixing the terminal post 2 to the terminal post mounting hole 11.

[0038] Specifically, the battery cell frame 1 includes two first side plates arranged horizontally and two second side plates arranged vertically. The two first side plates and the two second side plates are arranged alternately and are connected end to end to enclose an installation space for accommodating the battery cell 41.

[0039] In some embodiments, two terminal post mounting holes 11 are provided on the rectangular frame body; the two terminal post mounting holes 11 are mounted on the two second side plates, or the two terminal post mounting holes 11 are mounted on the same second side plate; correspondingly, two terminal posts 2 are provided, and two sets of mounting assemblies 3 are also provided. By providing the mounting assembly 3 between the terminal post mounting hole 11 and the terminal post 2, the terminal post 2 is isolated from the battery cell frame 1 to avoid contact.

[0040] Specifically, the cross-sectional area of the first terminal post member 21 is 15mm 2 、30mm 2 、45mm 2 、60mm 2 、75mm 2 、90mm 2 、105mm 2 、120mm 2 、135mm 2 、150mm 2 、165mm 2 、180mm 2 、195mm 2 、210mm 2 、225mm 2 、240mm 2 、255mm 2 、270mm 2 、285mm 2 or 300mm 2 in any cross-sectional area or any range value composed of any two cross-sectional areas; in a preferred embodiment, the cross-sectional area of the first terminal post member 21 is 100mm 2 -200mm 2 。

[0041] When the cross-sectional area of the first terminal post member 21 is 15mm 2 -300mm 2When the battery has a good discharge rate.

[0042] In the prior art, it is necessary to first weld the cover plate to the battery housing, and finally weld the pole column to the tab. This structure often requires a relatively long length of the tab to be reserved. However, the long length of the tab will affect the energy density of the battery. At the same time, when the battery cover plate is installed, the displacement of the battery core is caused by the bending and force transmission of the tab. Secondly, this structure has high requirements for welding. Currently, laser welding is commonly used to penetrate the pole column and the tab to weld the two together. However, this welding method cannot observe the actual welding situation of the pole column and the tab through the naked eye or machine vision. If there is a virtual weld or an explosion weld inside, it is difficult to detect, which has a great adverse impact on the control of the battery yield and the defective rate is too high.

[0043] The battery core frame of the present utility model is a rectangular frame body with an accommodating space. First, the pole column is installed in the pole column mounting hole through the mounting component, then the battery core is placed on the side of the rectangular frame body. After that, the tab of the battery core is directly welded to the bottom surface of the second pole column member by laser welding. Finally, after the tab of the battery core is bent, the battery core is placed into the battery core frame. The rectangular frame body structure provided by the present utility model can conveniently observe the shape of the tab after bending, and the shape of the tab is visible, which is convenient for monitoring the bending quality of the tab. At the same time, adopting the rectangular frame body structure can simplify the casing process of the battery core and facilitate the installation and fixation of the battery core.

[0044] Alternatively, first install the pole column in the pole column mounting hole through the mounting component. Add an inner connecting piece at the bottom of the second pole column member. The inner connecting piece extends from the bottom surface of the second pole column member to the outside of the battery core frame. The tab overlaps one end of the inner connecting piece located outside the battery core frame. Then, the tab is ultrasonically welded to the inner connecting piece. After welding, the inner connecting piece is bent and the battery core is installed into the battery core frame.

[0045] Compared with the prior art, since the positions of the battery core frame corresponding to the two larger surfaces of the battery core are open ends, it is convenient to quickly place the battery core into the rectangular frame body, which is convenient for the battery core to be put into the shell. At the same time, it is convenient to quickly install the pole column in the pole column mounting hole through the mounting component. Secondly, the tab of the present utility model can be directly welded to one end of the pole column located inside the battery core frame. The actual welding situation of the pole column and the tab can be observed through the naked eye or machine vision during the welding process, and the situation of virtual welding or explosion welding can be found in time, effectively improving the control of the battery yield. At the same time, the bending process after welding the pole column and the tab can also be monitored in real time to ensure the quality of the battery core after it is put into the rectangular frame body.

[0046] Such as Figure 3As shown, in one embodiment, the mounting assembly 3 includes

[0047] The connecting piece 31 is located outside the cell frame 1 and is fixedly connected to the first pole piece 21 passing through the pole mounting hole 11;

[0048] A first insulating member 32 is provided at one end surface of the pole mounting hole 11 and is located between the connecting piece 31 and the cell frame 1;

[0049] The second insulating member 33 is arranged at the other end surface of the pole mounting hole 11 and is located between the second pole member 22 of the pole 2 and the cell frame 1;

[0050] The first sealing ring 34 is sleeved on the first pole piece 21 of the pole 2 and is located between the cell frame 1 and the second pole piece 22 .

[0051] In some embodiments, by disposing a first insulating member 32 on one side of the pole mounting hole 11 and disposing a second insulating member 33 and a first sealing ring 34 on the other side of the pole mounting hole 11 , the pole 2 is isolated from the cell frame 1 to avoid contact therebetween.

[0052] like Figure 3 As shown, in one embodiment, a first groove 331 is provided on the second insulating member 33 for the second pole member 22 to be embedded in, and a first through hole 332 is provided in the first groove 331. When the first pole member 21 of the pole 2 is fixed to the connecting piece 31, the second pole member 22 is embedded in the first groove 331, and the first sealing ring 34 sleeved on the first pole member 21 is squeezed into the first through hole 332.

[0053] Specifically, the first pole member 21 is connected to the larger surface of the second pole member 22, and a first groove 331 is provided on the side of the second insulating member 33 facing away from the battery cell frame 1. The second pole member 22 is embedded in the first groove 331, and the first groove 331 limits the second pole member 22. The first sealing ring 34 is sleeved on the first pole member 21 and located in the first through hole 332 of the second insulating member 33, so that the first pole member 21 is connected to the first through hole 332 through the first sealing ring 34, thereby preventing the first pole member 21 and the second insulating member 33 from moving.

[0054] like Figure 4 As shown, in one embodiment, the first insulating member 32 includes a substrate 321, a second groove 322 arranged on a side surface of the substrate 321 for the connecting piece 31 to be embedded, and a second through hole 323 arranged in the second groove 322 and penetrating the substrate 321. The first pole member 21 of the pole 2 passes through the second through hole 323 and is fixed to the connecting piece 31 located in the second groove 322.

[0055] Specifically, the second groove 322 of the first insulating member 32 positions the connecting piece 31, and the second groove 322 and the connecting piece 31 can be connected by hot melting or gluing. The first pole piece 21 of the pole 2 sequentially passes through the first through hole 332, the pole mounting hole 11, and the second through hole 323 and is fixedly connected to the connecting piece 31 located in the second groove 322.

[0056] As Figure 4 shown, in an embodiment, the first insulating member 32 further includes a sleeve 324 provided on the other side surface of the substrate 321. The second through hole 323 communicates with the central hole of the sleeve 324. When the first pole piece 21 of the pole 2 is fixed to the connecting piece 31, the sleeve 324 is inserted into the pole mounting hole 11 and abuts against the first sealing ring 34 located on the other side of the pole mounting hole 11.

[0057] Specifically, the sleeve 324 is sleeved on the outside of the first pole piece 21 and is embedded in the pole mounting hole 11. The end of the sleeve 324 away from the first insulating member 32 contacts the upper surface of the first sealing ring 34, thereby preventing the outer wall of the first pole piece 21 from contacting the inner wall of the pole mounting hole 11 and avoiding a short - circuit phenomenon of the battery 4.

[0058] As Figure 3 shown, in an embodiment, the first sealing ring 34 is sleeved on the first pole piece 21. The first sealing ring 34 has a first sealing surface 341 and a second sealing surface 342 that are oppositely arranged along the setting direction of the first pole piece 21. The first sealing surface 341 abuts against the inner side surface of the pole mounting hole 11 of the cell frame 1 and the end surface of the sleeve 324 of the first insulating member 32, and the second sealing surface 342 abuts against the top surface of the second pole piece 22.

[0059] Specifically, the first sealing surface 341 of the first sealing ring 34 abuts against the inner side surface of the pole mounting hole 11 of the cell frame 1 and the end surface of the sleeve 324 of the first insulating member 32, thereby preventing the outer wall of the first pole piece 21 from contacting the inner wall of the pole mounting hole 11 and avoiding a short - circuit phenomenon of the battery 4.

[0060] The second sealing surface 342 of the first sealing ring 34 abuts against the top surface of the second pole piece 22, thereby contacting the top surface of the second pole piece 22. The setting of the first sealing ring 34 prevents the second pole piece 22 from contacting the cell frame 1 and avoids a short - circuit phenomenon of the battery 4.

[0061] As Figure 3 shown, in an embodiment, the connecting piece 31 is provided with a third through hole 311 into which the first pole piece 21 of the pole 2 can be inserted. The first pole piece 21 of the pole 2 is inserted into the third through hole 311 and is fixedly connected to the connecting piece 31 by welding.

[0062] Specifically, in one embodiment, the end face of the first pole piece 21 is flush with the top face of the connecting piece 31.

[0063] Specifically, the outer wall of the first pole piece 21 and the inner wall of the third through hole 311 of the connecting piece 31 are connected by surface laser welding, thereby realizing the electrical connection between the pole 2 and the connecting piece 31.

[0064] In another embodiment, the end face of the first pole piece 21 is located within the third through hole 311, and the end face of the first pole piece 21 is 0.1 mm - 0.3 mm lower than the bottom face of the connecting piece 31.

[0065] Specifically, the end face of the first pole piece 21 is lower than the bottom face of the connecting piece 31 by any one value or a range value composed of any two values among 0.1 mm, 0.2 mm or 0.3 mm; in a preferred embodiment, the end face of the first pole piece 21 is 0.2 mm lower than the bottom face of the connecting piece 31.

[0066] Such as Figure 2 As shown, in one embodiment, the first pole piece 21 and the second pole piece 22 of the pole 2 are integrally formed and have the same material.

[0067] Specifically, the first pole piece 21 and the second pole piece 22 are of an integrally formed structure, thereby improving the strength of the pole 2 and reducing the welding process between the first pole piece 21 and the second pole piece 22.

[0068] Furthermore, the materials of the first pole piece 21 and the second pole piece 22 include but are not limited to copper.

[0069] Such as Figure 2 As shown, in one embodiment, the first pole piece 21 includes a first section 211 fixedly connected to the second pole piece 22 and a second section 212 fixedly connected to the first section 211. The cross-sections of the first section 211 and the second section 212 of the first pole piece 21 on the second pole piece 22 are respectively circular.

[0070] Specifically, the shapes of the sleeve 324, the inner circle of the first sealing ring 34, the second through hole 323, and the third through hole 311 are all circular, thereby facilitating sleeving on the outside of the first pole piece 21. The shape of the first through hole 332 is the same as the outer circle of the first sealing ring 34, which can be either circular or other shapes; the shapes of the first insulating member 32, the second insulating member 33, and the connecting piece 31 are each independently selected from circular or other shapes; among them, the shapes of the first insulating member 32 and the connecting piece 31 are the same.

[0071] Such as Figure 2As shown, in one embodiment, along the direction from the second pole piece 22 to the second section 212 of the first pole piece 21, the diameters of the second pole piece 22, the first section 211 of the first pole piece 21, and the second section 212 of the first pole piece 21 decrease in sequence.

[0072] Specifically, the inner diameter of the sleeve 324, the inner diameter of the first sealing ring 34, and the inner diameter of the second through hole 323 are the same as the diameter of the first section 211 of the first pole piece 21, and the inner diameter of the second through hole 323 is the same as the diameter of the second section 212 of the first pole piece 21; the diameter of the pole mounting hole 11 is the same as the outer diameter of the sleeve 324; the outer diameter of the first sealing ring 34 is the same as the diameter of the first through hole 332.

[0073] The diameter of the second pole piece 22 is the largest, so that the second pole piece 22 is limited in the first groove 331; the diameter of the second section 212 of the first pole piece 21 is the smallest, so that the third through hole 311 of the connecting piece 31 contacts the outer surface of the second section 212 of the first pole piece 21, and the lower surface of the connecting piece 31 contacts the upper surface of the first section 211 of the first pole piece 21, thereby increasing the welding area between the connecting piece 31 and the first pole piece 21 and improving the connection firmness between the connecting piece 31 and the first pole piece 21.

[0074] As Figure 1 shown, in one embodiment, both pole mounting holes 11 are provided on the same side edge of the rectangular frame.

[0075] Specifically, the two pole mounting holes 11 are symmetrically arranged about the central axis in the length direction of the same side edge of the rectangular frame; poles 2 are arranged in both pole mounting holes 11, and the poles 2 include a positive pole 2 and a negative pole 2. At the same time, mounting components 3 used in a matching manner are provided at both pole mounting holes 11. Thus, the poles 2 are fixed to the rectangular frame and insulated.

[0076] In one embodiment, the two pole mounting holes 11 are respectively provided on two opposite side edges of the rectangular frame.

[0077] In one embodiment, the two pole mounting holes 11 are respectively provided on two opposite side edges of the battery cell frame 1. Poles 2 are arranged in both pole mounting holes 11, and the poles 2 include a positive pole 2 and a negative pole 2. At the same time, mounting components 3 used in a matching manner are provided at both pole mounting holes 11. Thus, the poles 2 are fixed to the rectangular frame and insulated.

[0078] As Figure 1 shown, in one embodiment, a liquid injection hole located on the same side edge as the pole mounting hole 11 is further provided on the rectangular frame of the battery cell frame 1; the integrated battery 4 frame further includes a second sealing ring 13 provided at the liquid injection hole and a liquid injection rivet 14 for plugging the liquid injection hole.

[0079] The liquid injection port 12 is used to inject electrolyte into the battery 4. The electrolyte enters the inner cavity of the battery 4 housing through the liquid injection port 12. After the liquid injection is completed or the formation is completed, the liquid injection port 12 is sealed. The sealing method is to set a second sealing ring 13 in the liquid injection port 12, and the liquid injection port 12 is sealed by the liquid injection rivet 14. The settings of the liquid injection rivet 14 and the second sealing ring 13 can realize the sealing of the liquid injection port 12 in a vacuum environment.

[0080] In one embodiment, the liquid injection port 12 and the pole column mounting hole 11 are arranged on the same plane of the cell frame 1.

[0081] In other embodiments, the liquid injection port 12 and the pole column mounting hole 11 are arranged on different planes of the cell frame 1.

[0082] Such as Figure 1 As shown, in one embodiment, a pressure relief hole is further provided on the rectangular frame of the cell frame 1, and the integrated battery 4 frame further includes an explosion-proof valve 15 arranged at the pressure relief hole.

[0083] Specifically, an explosion-proof valve 15 is arranged at the pressure relief hole. The explosion-proof valve 15 includes an explosion-proof film with a notch and an explosion-proof patch. The explosion-proof film and the explosion-proof patch are located on both sides of the pressure relief hole respectively; the explosion-proof film is located inside the installation space of the cell frame 1, and the explosion-proof patch is located outside the installation space of the cell frame 1. The explosion-proof patch has a notch to form a structurally weak part at the explosion-proof opening. When the battery 4 undergoes thermal runaway, a large amount of gas will be generated, forming a high pressure inside the battery 4. At this time, the explosion-proof patch breaks at the notch to form an opening, which plays a role in relieving pressure on the battery 4, and ultimately avoids the explosion of the battery 4 due to excessive pressure.

[0084] Specifically, the explosion-proof opening and the pole column mounting hole 11 are arranged on the same plane or different planes of the cell frame 1.

[0085] Such as Figure 5 As shown, in one embodiment, on the other hand, the present invention provides a battery 4, including the above-mentioned integrated battery 4 frame, a cell 41 arranged in the integrated battery 4 frame, and a first housing 43 and a second housing 44 arranged on both sides of the integrated battery 4 frame. The first housing 43 and the second housing 44 are welded to both side surfaces of the cell frame 1 of the integrated battery 4 frame. The cell 41 has pole tabs 42, and the pole tabs 42 are electrically connected to the pole columns 2 of the integrated battery 4 frame.

[0086] Specifically, the cell 41 is arranged in the integrated battery 4 frame, and pole tabs 42 are arranged at one end of the cell 41 close to the pole column 2; the pole tabs 42 of the cell 41 are fixed to the second pole column member 22 in the pole columns 2 of the integrated battery 4 frame by welding.

[0087] Further, the welding methods include, but are not limited to, laser welding, electromagnetic pulse welding, resistance welding, electron beam welding and other welding methods.

[0088] As Figure 5 shown, in an embodiment, the thickness of the battery cell frame 1 of the integrated battery 4 frame is 0.8 mm - 3 mm, and the thicknesses of the first housing 43 and the second housing 44 are 0.1 mm - 0.4 mm.

[0089] Specifically, the thickness of the integrated battery 4 frame is any one of 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm or 3 mm or a range value composed of any two of these thicknesses; in a preferred embodiment, the thickness of the integrated battery 4 frame is 1 mm - 2 mm.

[0090] Specifically, the thicknesses of the first housing 43 and the second housing 44 are any one of 0.1 mm, 0.2 mm, 0.3 mm or 0.4 mm or a range value composed of any two of these thicknesses; in a preferred embodiment, the thicknesses of the first housing 43 and the second housing 44 are 0.2 mm - 0.3 mm.

[0091] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated battery frame, characterized in that: including a battery cell frame including a rectangular frame body with an accommodation space in the middle, and pole post mounting holes are provided on the rectangular frame body; The pole comprises a first pole piece and a second pole piece connected in sequence, the cross-sectional area of ​​the second pole piece is larger than the cross-sectional area of ​​the first pole piece, and the cross-sectional area of ​​the first pole piece is 15mm 2 -300mm 2 ; and a mounting assembly for fixing the pole post to the pole post mounting hole.

2. The integrated battery frame according to claim 1, wherein: The mounting assembly includes a connecting piece located outside the battery cell frame and fixedly connected to the first pole post piece passing through the pole post mounting hole; a first insulating member provided on one end face of the pole post mounting hole and located between the connecting piece and the battery cell frame; a second insulating member provided on the other end face of the pole post mounting hole and located between the second pole post piece of the pole post and the battery cell frame; and a first sealing ring sleeved on the first pole post piece of the pole post and located between the battery cell frame and the second pole post piece.

3. The integrated battery frame according to claim 2, wherein: A first groove for the second pole post piece to be embedded is provided on the second insulating member, and a first through hole is provided in the first groove. When the first pole post piece of the pole post is fixed to the connecting piece, the second pole post piece is embedded in the first groove, and the first sealing ring sleeved on the first pole post piece is extruded into the first through hole.

4. The integrated battery frame according to claim 2, wherein: The first insulating member includes a substrate, a second groove provided on one side surface of the substrate for the connecting piece to be embedded, and a second through hole penetrating the substrate and provided in the second groove. The first pole post piece of the pole post passes through the second through hole and is fixedly connected to the connecting piece located in the second groove.

5. The integrated battery frame according to claim 4, wherein: The first insulating member further includes a sleeve provided on the other side surface of the substrate. The second through hole is communicated with the central hole of the sleeve. When the first pole post piece of the pole post is fixed to the connecting piece, the sleeve is inserted into the pole post mounting hole and abuts against the first sealing ring located on the other side of the pole post mounting hole.

6. The integrated battery frame according to claim 5, wherein: The first sealing ring is sleeved on the first pole post piece. The first sealing ring has a first sealing surface and a second sealing surface which are oppositely arranged along the setting direction of the first pole post piece. The first sealing surface abuts against the inner side surface of the pole post mounting hole of the battery cell frame and the end face of the sleeve of the first insulating member, and the second sealing surface abuts against the top surface of the second pole post piece.

7. The integrated battery frame according to claim 2, wherein: A third through hole for the first pole post piece of the pole post to be inserted is provided on the connecting piece. The first pole post piece of the pole post is inserted into the third through hole and is fixedly connected to the connecting piece by welding.

8. The integrated battery frame according to claim 1, wherein: A liquid injection hole on the same side as the pole post mounting hole is further provided on the rectangular frame body of the battery cell frame; the integrated battery frame further includes a second sealing ring provided at the liquid injection hole and a liquid injection rivet for plugging the liquid injection hole.

9. The integrated battery frame according to claim 1, wherein: A pressure relief hole is further provided on the rectangular frame body of the battery cell frame, and the integrated battery frame further includes an explosion-proof valve provided at the pressure relief hole.

10. A battery, characterized in that: Comprising the integrated battery frame according to any one of claims 1-9, battery cells disposed within the integrated battery frame, and a first housing and a second housing disposed on both sides of the integrated battery frame, wherein the first housing and the second housing are welded to both side surfaces of the cell frame of the integrated battery frame, the battery cells have tabs, and the tabs are electrically connected to the battery terminals of the integrated battery frame.

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