WO2023134535A1

WO2023134535A1 - Battery module and power-utilization device

Info

Publication number: WO2023134535A1
Application number: PCT/CN2023/070669
Authority: WO
Inventors: 曾智敏; 唐彧; 杨海奇; 黄小腾; 王鹏; 徐晨怡
Original assignee: 宁德时代新能源科技股份有限公司
Priority date: 2022-01-17
Filing date: 2023-01-05
Publication date: 2023-07-20
Also published as: CN217507559U

Abstract

Embodiments of the present application relate to the technical field of electronic component manufacturing, in particular to a battery module and a power-utilization device. The battery module (100) comprises a battery cell module (10), an anti-collision frame (20), and an anti-collision member (40). The battery cell module (10) comprises a first surface (11), a second surface (12), a first side surface (13), a second side surface (14), and a third side surface (15); the first surface (11) and the second surface (12) are oppositely provided; the first side surface (13), the second side surface (14) and the third side surface (15) are separately connected to the first surface (11) and the second surface (12); the second side surface (14) is respectively connected to the first side surface (13) and the third side surface; the first side surface (13) and the third side surface (15) are oppositely provided; the battery cell module (10) is provided with an electrode pole (16); the electrode pole (16) is provided on the first side surface (13) and/or the third side surface (15). The anti-collision frame (20) is provided with an accommodating space (21) for accommodating the battery cell module (10), and a gap (30) is formed between the first side surface (13) and/or the third side surface (15) and the anti-collision frame (20). The anti-collision member (40) is provided in the gap (30), one side of the anti-collision member (40) abuts against the inner surface of the anti-collision frame (20), and the other side of the anti-collision member (40) abuts against an end portion, connected to the second side surface (14), of the first side surface (13) and/or the third side surface (15) provided with the electrode pole (16). Therefore, the safety is improved.

Description

Battery modules and electrical equipment

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on January 17, 2022, with the application number 202220117815.8 and the application title "Battery Module and Electrical Equipment", the entire contents of which are incorporated in this application by reference middle.

technical field

The embodiments of the present application relate to the technical field of electronic component manufacturing, and in particular, relate to a battery module and electrical equipment.

Background technique

As a means of transportation, automobiles emit a large amount of air pollutants such as carbon, nitrogen, sulfur oxides, hydrocarbons, and lead compounds every day. They are important sources of air pollution and have serious consequences for human health and the ecological environment hazards. At present, new energy vehicles powered by electric energy are gradually occupying the automobile market, thereby alleviating the pollution caused by these pollutants to the environment.

In order to ensure its high battery life, new energy vehicles use lithium batteries with high energy density as energy sources. Lithium batteries are a type of batteries that use lithium metal or lithium alloys as positive and/or negative electrode materials and use non-aqueous electrolyte solutions.

As a new energy vehicle, its safety performance is the top priority. The battery is prone to fire or explosion when it is squeezed or hit, which is very dangerous. Therefore, whether it is the direct protection of the car body for the human body or the indirect protection of the human body for the protection of the lithium battery by the car body, all determine the safety performance of new energy vehicles.

technical problem

In view of the above problems, the embodiment of the present application aims to provide a battery module and an electrical device to improve the current situation that the battery is prone to fire or explosion when it is squeezed or hit.

technical solution

The technical scheme that the embodiment of the present application adopts is:

In a first aspect, the present application provides a battery module, including a battery module, an anti-collision frame, and an anti-collision member. The cell module includes a first surface, a second surface, a first side, a second side and a third side. The first surface and the second surface are oppositely arranged, the first side is respectively connected with the first surface and the second surface, the second side is respectively connected with the first surface and the second surface, and the third side is respectively connected with the first surface and the second surface connection, the second side is respectively connected to the first side and the third side, the first side and the third side are arranged oppositely, the battery module is provided with poles, and the poles are arranged on the first side and/or the third side. The anti-collision frame is provided with a receiving space, and the cell module is accommodated in the accommodating space, and there is a gap between the first side and/or the third side with the pole and the anti-collision frame. The anti-collision piece is arranged in the gap, and one side of the anti-collision piece abuts against the inner surface of the anti-collision frame, and the other side of the anti-collision piece abuts against the first side provided with poles and/or the third side is connected to the second side the end of.

In the technical solution of the embodiment of the present application, the battery module is accommodated in the accommodation space of the anti-collision frame, and the anti-collision member is arranged in the gap between the battery module and the anti-collision frame. When the battery module is squeezed or impacted, the anti-collision frame is first subjected to the impact force. By crushing the anti-collision frame, the anti-collision frame can absorb the energy generated by the impact force, and then transfer the remaining energy to the The battery module is provided with an end portion where the first side and/or the third side of the pole are connected to one end of the second side. Since the end is located at the junction of the first side and/or the third side and the second side of the battery module, the energy brought by the impact force can be dispersed to the two sides, which improves the force bearing capacity of the battery module. Prevent the impact force from directly crushing the battery module and causing explosion.

In some embodiments, the bumper includes a plurality of bumpers arranged at intervals. This design allows the impact force of the battery module to be transmitted and dispersed through multiple anti-collision blocks, so as to prevent burning or explosion caused by crushing the pole.

In some embodiments, the plurality of bumpers includes a first bumper, a second bumper, a third bumper and a fourth bumper arranged at intervals. The first anti-collision block is located on the first side and/or the third side is connected to the second side and one end is close to the first surface, and the second anti-collision block is located on the first side and/or the third side is connected to the second side One end of is close to the side of the second surface. The third anti-collision block is located on the first side and/or the third side is connected to the second side and the other end is close to the first surface, and the fourth anti-collision block is located on the first side and/or the third side is connected to the second side. The other end of the side is close to one side of the second surface. This design enables the impact force received by the battery module to be transmitted from the anti-collision frame along the first anti-collision block, the second anti-collision block, the third anti-collision block and the fourth anti-collision block, thereby preventing the pole from being crushed. burn or explode.

In some embodiments, the multiple anti-collision blocks include a first anti-collision beam and a second anti-collision beam, the first anti-collision beam is located at the end of one end of the first side and/or the third side connected to the second side, The second anti-collision beam is located at the end where the first side and/or the third side are connected to the other end of the second side, and the first anti-collision beam and the second anti-collision beam are arranged at intervals. This design enables the impact force received by the battery module to be transmitted from the anti-collision frame along the first anti-collision beam and the second anti-collision beam, so as to prevent burning or explosion caused by crushing the pole.

In some embodiments, the bumper includes a frame-type bumper, and the frame-type bumper is arranged along the edge of the first side and/or the third side. This design enables the impact force received by the battery module to be transmitted from the anti-collision frame along the frame-type anti-collision block, so as to prevent burning or explosion caused by crushing the pole.

In some embodiments, the bumper is made of insulating material. This design can further improve the safety of the battery module and prevent leakage of electricity when the anti-collision frame is crushed.

In some embodiments, the battery module further includes an insulating structure, and the insulating structure is disposed between the cell module and the anti-collision member, or, the insulating structure is disposed between the anti-collision member and the anti-collision frame. This design makes the insulating structure play an insulating role between the battery module and the anti-collision frame when the battery module is hit, which reduces or avoids the short circuit of the battery module to a certain extent and improves the safety of the battery module. sex.

In some embodiments, the anti-collision frame includes a first side frame and a second side frame, the first side frame is installed on the side of the first side away from the third side, and the second side frame is installed on the third side away from the first side side. By arranging the first side frame and the second side frame on both sides of the battery module, when the battery module is squeezed or impacted, the first side frame and the second side frame are first crushed by force, thereby absorbing the impact or The energy brought by extrusion is used to protect the cell module.

In some embodiments, the anti-collision frame further includes a first cover plate and a second cover plate, one end of the first cover plate is connected with the first side frame, and the other end of the first cover plate is connected with the second side frame; One end of the cover plate is connected to the first side frame, and the other end of the second cover plate is connected to the second side frame; the first side frame, the second side frame, the first cover plate and the second cover plate together form a storage space. This design can improve the stability of the first side frame and the second side frame, and can also transfer the impact force of the first side frame or the second side frame to the other side along the first cover plate and the second cover plate frame, thereby improving the impact resistance of the anti-collision frame.

In some embodiments, the first side frame includes a first longitudinal beam, a second longitudinal beam and at least one first cross beam, the second longitudinal beam abuts against the anti-collision member or the first side, the second longitudinal beam and the first longitudinal beam The beams are arranged opposite to each other, the first longitudinal beam is arranged away from the anti-collision member, one end of the first transverse beam is connected to the first longitudinal beam, the other end of the first transverse beam is connected to the second longitudinal beam, and the first transverse beam is connected to the first longitudinal beam or the second longitudinal beam. There is an included angle between the two longitudinal beams. By arranging the first cross beam between the first longitudinal beam and the second longitudinal beam, the first side frame has stronger impact and extrusion resistance.

In some embodiments, the second side frame includes a third longitudinal beam, a fourth longitudinal beam and at least one second cross beam, the fourth longitudinal beam abuts against the anti-collision member or the third side, the fourth longitudinal beam and the third longitudinal beam The beams are arranged oppositely, the third longitudinal beam is arranged away from the third side, one end of the second cross beam is connected with the third longitudinal beam, the other end of the second cross beam is connected with the fourth longitudinal beam, and the second cross beam is connected with the third longitudinal beam and the second cross beam. There are angles between the four longitudinal beams. By arranging the second cross beam between the third longitudinal beam and the fourth longitudinal beam, the first side frame has stronger impact and extrusion resistance.

In a second aspect, the embodiment of the present application further provides an electric device, which includes the above-mentioned battery module.

The above description is only an overview of the technical solution of the present application. In order to better understand the technical means of the present application, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable , the following specifically cites the specific implementation manner of the present application.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the specific embodiments will be briefly introduced below. Throughout the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, elements or parts are not necessarily drawn in actual scale. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a vehicle provided by one embodiment of the present application;

Fig. 2 is a perspective view of a battery module provided by one embodiment of the present application;

Fig. 3 is an exploded view of a battery module provided by one embodiment of the present application;

Fig. 4 is the sectional view of the A side of Fig. 2 provided by the present application;

Fig. 5 is a perspective view of the cell module and the anti-collision member provided by one embodiment of the present application;

Fig. 6 is a perspective view of a cell module and an anti-collision member provided by another embodiment of the present application;

Fig. 7 is a perspective view of a cell module and an anti-collision member provided by another embodiment of the present application;

FIG. 8 is a cross-sectional view of plane A of FIG. 2 provided by other embodiments of the present application.

The reference numerals in the specific embodiment are as follows:

1000, vehicle; 100, battery module; 200, controller; 300, motor;

10. Cell module; 11. First surface; 12. Second surface; 13. First side; 14. Second side; 15. Third side; 16. Pole; 17. Explosion-proof valve; 20. Anti- Collision frame; 21, containment space; 22, first side frame; 221, first longitudinal beam; 222, second longitudinal beam; 223, first cross beam; 23, second side frame; 231, third longitudinal beam; 232 , the fourth longitudinal beam; 233, the second beam; 24, the first cover plate; 25, the second cover plate; 26, the third cover plate; 30, the gap; 40, the anti-collision piece; 41, the first anti-collision block ; 42, the second anti-collision block; 43, the third anti-collision block; 44, the fourth anti-collision block; 45, the first anti-collision beam; 46, the second anti-collision beam; 47, frame type anti-collision block; 48 , connecting beam; X, the first direction; Y, the second direction; Z, the third direction.

Embodiments of the present invention

Embodiments of the technical solutions of the present application will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present application more clearly, and therefore are only examples, rather than limiting the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the application; the terms used herein are only for the purpose of describing specific embodiments, and are not intended to To limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the description of the above drawings are intended to cover a non-exclusive inclusion.

In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and should not be understood as indicating or implying relative importance or implicitly indicating the number, specificity, or specificity of the indicated technical features. Sequence or primary-secondary relationship. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise specifically defined.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiment of the present application, the term "and/or" is only a kind of association relationship describing associated objects, which means that there may be three kinds of relationships, such as A and/or B, which may mean: A exists alone, and A exists at the same time and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In the description of the embodiments of this application, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to two or more groups (including two), and "multiple pieces" refers to More than two pieces (including two pieces).

In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical" "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", "Radial", "Circumferential", etc. indicate the orientation or positional relationship based on the drawings Orientation or positional relationship is only for the convenience of describing the embodiment of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as an implementation of the present application. Example limitations.

In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a fixed connection. Disassembled connection, or integration; it can also be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific situations.

At present, judging from the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields . With the continuous expansion of power battery application fields, its market demand is also constantly expanding.

Taking an electric vehicle as an example, the inventor noticed that if a high-energy accident such as a collision occurs during the use of an electric vehicle, it may cause serious deformation of the lithium-ion battery, thereby causing serious safety problems such as an internal short circuit of the lithium-ion battery . When an internal short-circuit occurs in a lithium-ion battery, a large amount of energy in the entire battery pack will be released through the short-circuit point in a short period of time, causing a rapid rise in local temperature, which in turn causes the decomposition of positive and negative active materials, electrolyte, etc., resulting in lithium Ion battery thermal runaway. The high temperature generated by thermal runaway will burn the battery. Even if there is no thermal runaway, the local high temperature will still melt the current collector and diaphragm, which will cause the battery to spontaneously ignite or explode, threatening personal safety.

The battery module disclosed in the embodiments of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited to. The power system composed of the battery module disclosed in this application can be used to form the power device, which is beneficial to protect the battery cells in the battery module and improve the crush resistance and impact resistance of the battery module.

The embodiment of the present application provides an electric device using a battery module as a power source. The electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. . Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.

In the following embodiments, for the convenience of description, a vehicle 1000 as an electric device according to an embodiment of the present application is taken as an example for description.

Please refer to FIG. 1 , which is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle. The interior of the vehicle 1000 is provided with a battery module 100 , and the battery module 100 may be provided at the bottom, head or tail of the vehicle 1000 . The battery module 100 can be used for power supply of the vehicle 1000 , for example, the battery module 100 can be used as an operating power source of the vehicle 1000 . The vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery module 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .

In some embodiments of the present application, the battery module 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 to provide driving power for the vehicle 1000 instead of or partially replacing fuel oil or natural gas.

Please refer to FIG. 2 to FIG. 4 , which respectively show a perspective view of the battery module 100 provided by one embodiment of the present application, an exploded view of the battery module 100 provided by one of the embodiments of the present application, and a side A of FIG. 2 Sectional view. The battery module 100 includes a battery module 10 , an anti-collision frame 20 and an anti-collision member 40 . The cell module 10 includes a first surface 11 , a second surface 12 , a first side 13 , a second side 14 and a third side 15 . The first surface 11 and the second surface 12 are arranged oppositely, the first side 13 is connected with the first surface 11 and the second surface 12 respectively, the second side 14 is connected with the first surface 11 and the second surface 12 respectively, and the third side 15 respectively connected to the first surface 11 and the second surface 12, the second side 14 is respectively connected to the first side 13 and the third side 15, the first side 13 and the third side 15 are oppositely arranged, and the battery module 10 is provided with poles The post 16 , the pole post 16 is disposed on the first side 13 and/or the third side 15 . The anti-collision frame 20 is provided with a receiving space 21 in which the cell module 10 is accommodated, and there is a gap 30 between the first side 13 and/or the third side 15 provided with the pole 16 and the anti-collision frame 20 . The anti-collision member 40 is arranged in the gap 30, and one side of the anti-collision member 40 abuts against the inner surface of the anti-collision frame 20, and the other side of the anti-collision member 40 abuts against the first side 13 and/or the third side where the pole 16 is provided. The side surface 15 is connected to an end portion of one end of the second side surface 14 .

It can be understood that this design makes the battery module 100 deform when the vehicle 1000 is squeezed or hit. As for the anti-collision frame 20 of a kind of cushioning and energy-absorbing structure, at this moment, the anti-collision frame 20 is first subjected to the impact force produced by extrusion or impact, and under the effect of the impact force, the anti-collision frame 20 collapses and performs the first Step cushioning and energy absorption. Secondly, on the one hand, the anti-collision piece 40 can perform another step of energy absorption; One side 13 and/or the third side 15 are connected to one end of the second side 14 . As for the cell module 10 , the end portion where the first side 13 and the second side 14 are connected has better force bearing capacity. Because the bending moment of the end connecting the first side 13 and the second side 14 is relatively larger than that of the central region away from the end, the mechanical performance is stronger. It is worth mentioning that the battery module 10 is also provided with an explosion-proof valve 17, which is used as a pressure relief device. side 13 and/or third side 15 . Therefore, the anti-collision frame 20 and the anti-collision member 40 can successively withstand the impact force generated by external extrusion or impact, so as to protect the pole 16 and the explosion-proof valve 17 . It should be noted that when the pole 16 or the explosion-proof valve 17 is damaged by extrusion or impact, the battery module 10 will experience thermal runaway due to the damage of the pole 16 or the explosion-proof valve 17, which will further cause the battery module 10 to burn. Or explode. That is, the pole 16 is arranged on the cell module 10, and the anti-collision member 40 is arranged between the cell module 10 and the anti-collision frame 20, so that the anti-collision frame 20 and the anti-collision member 40 can successively withstand external The impact force generated by extrusion or impact is used to protect the pole 16 and the explosion-proof valve 17. For ease of description, the battery cell module 10 in FIG. 3 schematically includes only one battery cell. Those skilled in the art can understand that the battery cell module 10 can also include multiple battery cells, including multiple When a single battery cell is used, its poles are arranged on the first side 13 and/or the third side 15 .

In some embodiments, please refer to FIGS. 5-6 in combination with other drawings, which show a perspective view of the cell module 10 and the anti-collision member 40 provided by one embodiment of the present application. The anti-collision member 40 includes a plurality of anti-collision blocks arranged at intervals.

Specifically, the plurality of anti-collision blocks include a first anti-collision block 41 , a second anti-collision block 42 , a third anti-collision block 43 and a fourth anti-collision block 44 . The same side is provided with the first anti-collision block 41, the second anti-collision block 42, the third anti-collision block 43 and the fourth anti-collision block 44, that is, in one case, the first side 13 is provided with the first anti-collision block Collision block 41, the second anti-collision block 42, the third anti-collision block 43 and the fourth anti-collision block 44; in another case, the third side 15 is provided with the first anti-collision block 41, the second anti-collision block 42 , the third anti-collision block 43 and the fourth anti-collision block 44; Four anti-collision blocks 44 , and the third side 15 is provided with a first anti-collision block 41 , a second anti-collision block 42 , a third anti-collision block 43 and a fourth anti-collision block 44 . The first anti-collision block 41 is located at the side of the first side 13 and/or the third side 15 connected to the second side 14 near the first surface 11, and the second anti-collision block 42 is located at the first side 13 and/or the second side 14. The three sides 15 are connected to one end of the second side 14 close to the side of the second surface 12 . The third anti-collision block 43 is located on the first side 13 and/or the third side 15 is connected to the other end of the second side 14 on the side close to the first surface 11, and the fourth anti-collision block 44 is located on the first side 13 and/or The third side 15 is connected to the other end of the second side 14 near the second surface 12 . That is, the first anti-collision block 41, the second anti-collision block 42, the third anti-collision block 43 and the fourth anti-collision block 44 are respectively arranged on the four corners of one side of the pole 16, so that the pole 16 And the explosion-proof valve 17 need not be directly subjected to the impact force from the anti-collision frame 20, so as to protect the pole 16 and the explosion-proof valve 17. It is worth mentioning that the first anti-collision block 41, the second anti-collision block 42, the third anti-collision block 43 and the fourth anti-collision block 44 are all arranged in the shape of a rectangular block, and in some other embodiments, also It can be cylindrical, or extend along the outer edge of the first side 13 and/or the third side 15 to form an "L" shape and be arranged at the corner. This patent does not limit the specific shape of the anti-collision block.

It should be noted that, for the cell module 10, for the cell module 10, one end of the first side 13 connected to the second side 14 is close to the side of the first surface 11, and the first side 13 is connected to the second side. One end of the side surface 14 is close to the side of the second surface 12 and can withstand a higher pressure than the middle area away from the above two sides. The reason is that the bending moment of the middle area of the cell module 10 away from the above two sides is larger than the above two sides, so it is easy to be deformed under pressure, so the first anti-collision block 41 and the second anti-collision block 42 are respectively arranged at the bending moment The smaller two sides, similarly, the third anti-collision block 43 and the fourth anti-collision block 44 are respectively arranged on the two sides away from the second side 14 with a smaller bending moment. It can be understood that the first anti-collision block 41 , the second anti-collision block 42 , the third anti-collision block 43 and the fourth anti-collision block 44 can also partially extend to the second side 14 , thereby further improving the stability of the battery module 100 . Impact resistance in more directions.

In some embodiments, please refer to FIG. 6 in combination with other drawings, which shows a perspective view of the cell module 10 and the anti-collision member 40 provided by another embodiment of the present application. The plurality of anti-collision blocks may further include a first anti-collision beam 45 and a second anti-collision beam 46, at least one first anti-collision beam 45 and at least one second anti-collision beam 46 are located on the same side. The first anti-collision beam 45 is located at the end of the first side 13 and/or the third side 15 connected to the second side 14, and the second anti-collision beam 46 is located at the first side 13 and/or the third side 15 is connected to the end of the second side 14. At the other end of the second side surface 14 , the first anti-collision beam 45 and the second anti-collision beam 46 are arranged at intervals. Specifically, the first anti-collision beam 45 extends along the edge line where the first side 13 and/or the third side 15 are connected to the second side 14, and one end of the first anti-collision beam 45 is arranged at an end close to the first surface 11, and the second side The other end of an anti-collision beam 45 is provided with an end close to the second surface 12; the second anti-collision beam 46 extends along the first side 13 and/or the third side 15 away from the edge of the second side 14, and the second anti-collision beam One end of the second anti-collision beam 46 is disposed near the end of the first surface 11 , and the other end of the second anti-collision beam 46 is disposed near the end of the second surface 12 . Therefore, when the anti-collision frame 20 is crushed, the first anti-collision beam 45 and the second anti-collision beam 46 can further disperse the impact force to more areas, thereby preventing excessive local stress on the surface of the cell module 10 . It can be understood that the first anti-collision beam 45 and the second anti-collision beam 46 can also partially extend to the second side 14 , so as to further improve the impact resistance of the battery module 100 in more directions.

In some embodiments, please refer to FIG. 7 , which shows a perspective view of the cell module 10 and the anti-collision member 40 provided in another embodiment of the present application in combination with other drawings. The anti-collision member 40 includes a frame-type anti-collision block 47 disposed along the edge of the first side 13 and/or the third side 15 . Therefore, the edge of the frame-type anti-collision block 47 coincides with the edge of the first side 13 and/or the third side 15 , so that there is a gap between the anti-collision frame 20 and the first side 13 and/or the third side 15 . Moreover, at least one connecting beam 48 is also provided in the middle area of the first side 13 and/or the third side 15 to enhance the force bearing capacity of the frame type anti-collision block 47, wherein the connecting beam 48 is connected to the first side 13 and/or Or the side of the third side 15 connected to the second side 14 is parallel, so that the frame of the frame-type anti-collision block 47 is in a grid shape. It can be understood that the frame-type anti-collision block 47 can also partially extend to the second side 14 , so as to further improve the impact resistance of the battery module 100 in more directions.

In the embodiment of the present application, the anti-collision member 40 is made of insulating material. Through this design, when the battery module 100 is deformed due to extrusion, it can be insulated by the anti-collision member 40 to prevent secondary hazards such as electric shock.

In some embodiments, the anti-collision member 40 and the insulating layer can also be provided at the same time, that is to say, the battery module 100 also includes an insulating layer, and the insulating layer is arranged between the cell module 10 and the anti-collision member 40, Or, the insulating layer is disposed between the anti-collision member 40 and the anti-collision frame 20 . The insulating layer can be a structure such as an insulating gasket or an insulating shell, for example, an insulating gasket is added between the cell module 10 and the anti-collision member 40, or an insulating gasket is added between the anti-collision member 40 and the anti-collision frame 20 or Insulated housing. Multiple batteries and composite busbars (busbars) are arranged in the battery module 10, and the composite busbars can be connected between the batteries and other batteries, so that the batteries can be connected in series with other batteries or connected in parallel. The connection between the battery cell and the composite busbar is usually welded, and the insulation structure is between the composite busbar and the anti-collision frame 20, so that when the battery module 100 is hit, the insulation layer is between the cell module 10 and the anti-collision frame 20. Insulate between them, so as to reduce or avoid the short circuit of the composite busbar in the battery module 100 to a certain extent, and improve the safety of the battery module 100 .

For some embodiments, see FIG. 7 and see other figures. When the battery module 100 includes at least two sets of cell modules 10, the cell modules 10 include the following two configuration methods. For details, please refer to FIG. 2 in combination with other drawings:

(1) Two sets of cell modules 10 are arranged side by side along the first direction X or stacked along the second direction Y, and the poles 16 are all arranged on the first side 13 . For the battery module 100 including this arrangement of the cell module 10 , it is sufficient to arrange the anti-collision member 40 in the gap 30 as described above.

(2) Two sets of battery modules 10 are arranged side by side along the first direction X or stacked along the second direction Y, and the pole 16 of one of the battery modules 10 is arranged on the first side 13, and the other battery module 10 The poles 16 of the set 10 are disposed on the third side 15 .

For the arrangement of the above-mentioned second battery module 10, the embodiment of the present application also provides the following solution: there are gaps 30 on the first side 13 and the third side 15, corresponding to the first side 13 and the third side 15 Anti-collision members 40 are provided in the gaps, so that the battery module 100 can pass through the The bumper 40 absorbs or cushions, thereby protecting the pole 16 .

In some embodiments, please refer to FIG. 8 , which shows a cross-sectional view of plane A of FIG. 2 provided by other embodiments of the present application in combination with other drawings. When the battery module 100 includes at least four sets of battery modules 10, one battery module 10 and another battery module 10 are arranged side by side along the third direction Z, and the other battery module 10 and another battery module The group 10 is stacked along the second direction Y, one cell module 10 and another cell module 10 are stacked along the second direction Y, and another cell module 10 and another cell module 10 are stacked along the third direction Y. The directions Z are set side by side. For the arrangement of the cell module 10, the embodiment of the present application also provides the following solution: there are gaps 30 on the first side 13 and the third side 15, and in the corresponding gaps of the first side 13 and the third side 15 Both are equipped with anti-collision members 40, so that when the battery module 100 is subjected to an impact force from the first side 13 or the third side 15, or is squeezed from the first side 13 and the third side 15, it can pass through the anti-collision The member 40 absorbs or cushions, thereby protecting the pole 16. It should be noted that the first direction X is perpendicular to the second direction Y, the second direction Y is perpendicular to the third direction Z, and the third direction Z is perpendicular to the first direction X, so that the first direction X, the second direction Y and The third direction Z constitutes a three-dimensional Cartesian coordinate system.

For the anti-collision frame 20 mentioned above, please refer to FIG. 3 and other drawings. The crash frame 20 includes a first side frame 22 and a second side frame 23 . The first side frame 22 is mounted on a side of the first side 13 away from the third side 15 , and the second side frame 23 is mounted on a side of the third side 15 away from the first side 13 . By arranging the first side frame 22 and the second side frame 23 on the first side 13 and the third side 15 of the cell module 10, the force of the first side 13 and the third side 15 of the cell module 10 is enhanced. ability.

For the above-mentioned first side frame 22, please refer to FIG. 3 and other drawings. The first side frame 22 includes a first longitudinal beam 221 , a second longitudinal beam 222 and at least one first cross beam 223 , the second longitudinal beam 222 is in contact with the anti-collision member 40 or the first side 13 A longitudinal beam 221 is oppositely arranged, and the first longitudinal beam 221 is arranged away from the anti-collision member 40. One end of the first transverse beam 223 is connected to the first longitudinal beam 221, and the other end of the first transverse beam 223 is connected to the second longitudinal beam 222, and the second longitudinal beam 223 is connected to the second longitudinal beam 222. An included angle exists between a horizontal beam 223 and the first longitudinal beam 221 or the second longitudinal beam 222 . In some embodiments, the included angle between the first beam 223 and the first longitudinal beam 221 and the second longitudinal beam 222 can be any angle from 0° to 90°, wherein, in this embodiment, the first beam 223 and the second The included angle between the first longitudinal beam 221 or the second longitudinal beam 222 is 90°. The first longitudinal beam 221 , the second longitudinal beam 222 and at least one first cross beam 223 of the first side frame 22 form a buffer space to enhance the force bearing capacity of the anti-collision frame 20 .

For the above-mentioned second side frame 23, please refer to FIG. 3 and other drawings. The second side frame 23 includes a third longitudinal beam 231 , a fourth longitudinal beam 232 and at least one second cross beam 233 , the fourth longitudinal beam 232 abuts against the third side 15 of the anti-collision member 40 , the fourth longitudinal beam 232 and the third The longitudinal beam 231 is oppositely arranged, the third longitudinal beam 231 is arranged away from the third side 15, one end of the second transverse beam 233 is connected with the third longitudinal beam 231, the other end of the second transverse beam 233 is connected with the fourth longitudinal beam 232, and the second transverse beam 233 is connected with the fourth longitudinal beam 232. There is an included angle between the cross beam 233 and the third longitudinal beam 231 or the fourth longitudinal beam 232 . In some embodiments, the included angle between the second beam 233 and the third longitudinal beam 231 and the fourth longitudinal beam 232 can be any angle from 0° to 90°, wherein, in this embodiment, the second beam 233 and the fourth The included angle between the three longitudinal beams 231 or the fourth longitudinal beam 232 is 90°. The third longitudinal beam 231 , the fourth longitudinal beam 232 and at least one second cross beam 233 of the second side frame 23 form a buffer space to enhance the force bearing capacity of the anti-collision frame 20 .

In the embodiment of the present application, please refer to FIG. 3 and other drawings. The anti-collision frame 20 also includes a first cover plate 24, a second cover plate 25 and two third cover plates 26, one end of the first cover plate 24 is connected with the first side frame 22, and the other end of the first cover plate 24 is connected with the first side frame 22. The second side frame 23 is connected; one end of the second cover plate 25 is connected with the first side frame 22, and the other end of the second cover plate 25 is connected with the second side frame 23, so that the first side frame 22, the second side frame 23. The first cover plate 24 and the second cover plate 25 jointly enclose the storage space 21; the two third cover plates 26 are oppositely arranged, and the third cover plate 26 is simultaneously connected with the first side frame 22, the second side frame 23, The first cover 24 is connected to the second cover 25 to prevent the cell module 10 from sliding out of the storage space 21 , increase the airtightness of the storage space 21 , and improve the stability and safety of the battery module 100 .

According to some embodiments of the present application, the present application also provides an electric device, not shown in the figure, including the battery module 100 described in any of the above solutions.

According to some embodiments of the present application, refer to FIG. 3 in combination with other drawings. The present application provides a battery module 100 . The battery module 100 includes a battery module 10 , an anti-collision frame 20 and an anti-collision member 40 . The cell module 10 includes a first surface 11 , a second surface 12 , a first side 13 , a second side 14 and a third side 15 . The first surface 11 and the second surface 12 are arranged oppositely, the first side 13 is connected with the first surface 11 and the second surface 12 respectively, the second side 14 is connected with the first surface 11 and the second surface 12 respectively, and the third side 15 respectively connected to the first surface 11 and the second surface 12, the second side 14 is respectively connected to the first side 13 and the third side 15, the first side 13 and the third side 15 are oppositely arranged, and the battery module 10 is provided with poles The post 16 , the pole post 16 is disposed on the first side 13 and/or the third side 15 . The anti-collision frame 20 is provided with a receiving space 21 in which the cell module 10 is accommodated, and there is a gap 30 between the first side 13 and/or the third side 15 provided with the pole 16 and the anti-collision frame 20 . The anti-collision member 40 is arranged in the gap 30, and one side of the anti-collision member 40 abuts against the inner surface of the anti-collision frame 20, and the other side of the anti-collision member 40 abuts against the first side 13 and/or the third side where the pole 16 is provided. The side surface 15 is connected to an end portion of one end of the second side surface 14 . The cell module 10 is accommodated in the accommodation space 21 of the anti-collision frame 20 , and the anti-collision member 40 is disposed in the gap 30 between the cell module 10 and the anti-collision frame 20 . When the battery module 100 is squeezed or impacted, the anti-collision frame 20 is first subjected to the impact force, and by crushing the anti-collision frame 20, the anti-collision frame 20 can absorb the energy generated by the impact force, and then pass the remaining energy through the anti-collision frame 20. The striker 40 is delivered to the end of the first side 13 and/or the third side 15 of the cell module 10 connected to the second side 14 . Since the end is located at the junction of the first side 13 and the second side 14 of the battery module 10, the energy brought by the impact force can be dispersed to the first side 13 and the second side 14, improving the battery module 100. To prevent the impact force from directly crushing the cell module 10 and causing an explosion.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. All of them should be covered by the scope of the claims and description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A battery module, characterized in that it comprises:

The battery module includes a first surface, a second surface, a first side, a second side and a third side, the first surface and the second surface are opposite to each other, and the first side is respectively connected to the first surface and the second side. The two surfaces are connected, the second side is respectively connected with the first surface and the second surface, the third side is respectively connected with the first surface and the second surface, and the second side is respectively connected with the first side and the second surface The three sides are connected, the first side and the third side are arranged oppositely, the battery module is provided with poles, and the poles are arranged on the first side and/or the third side;

The anti-collision frame is provided with a storage space, the cell module is accommodated in the storage space, and there is a gap between the first side and/or the third side of the pole and the anti-collision frame ;as well as

An anti-collision piece, the anti-collision piece is arranged in the gap, and one side of the anti-collision piece abuts against the inner surface of the anti-collision frame, and the other side of the anti-collision piece abuts against the pole The first side and/or the third side of the column are connected to the ends of the second side.
The battery module according to claim 1, wherein the anti-collision member comprises a plurality of anti-collision blocks arranged at intervals.
The battery module according to claim 2, wherein the plurality of anti-collision blocks include a first anti-collision block, a second anti-collision block, a third anti-collision block and a fourth anti-collision block;

The first anti-collision block is located on the first side and/or one end of the third side connected to the second side is close to the first surface, and the second anti-collision block is located on the first side One end of the side and/or the third side connected to the second side is close to the side of the second surface;

The third anti-collision block is located on the first side and/or the other end of the third side connected to the second side is close to the first surface, and the fourth anti-collision block is located on the side of the first surface. The other end of the first side and/or the third side connected to the second side is close to the side of the second surface.
The battery module according to claim 2 or 3, wherein the plurality of anti-collision blocks include a first anti-collision beam and a second anti-collision beam, and the first anti-collision beam is located on the first side and/or the third side is connected to the end of one end of the second side, and the second anti-collision beam is located at the first side and/or the third side is connected to the second side At the other end, the first anti-collision beam and the second anti-collision beam are arranged at intervals.
The battery module according to claim 1, wherein the anti-collision member comprises a frame-type anti-collision block, and the frame-type anti-collision block is arranged along the edge of the first side and/or the third side.
The battery module according to any one of claims 1 to 5, characterized in that,

The bumper is made of insulating material.
The battery module according to any one of claims 1 to 6, wherein the battery module further comprises an insulating layer,

The insulating layer is arranged between the cell module and the anti-collision member, or the insulating layer is arranged between the anti-collision member and the anti-collision frame.
The battery module according to any one of claims 1 to 7, characterized in that,

The anti-collision frame includes a first side frame and a second side frame, the first side frame is installed on the side of the first side away from the third side, and the second side frame is installed on the first side The three sides are away from the side of the first side.
The battery module according to claim 8, wherein the anti-collision frame further comprises a first cover plate and a second cover plate, one end of the first cover plate is connected to the first side frame, the The other end of the first cover is connected to the second side frame; one end of the second cover is connected to the first side frame, and the other end of the second cover is connected to the second side frame Connection; the first side frame, the second side frame, the first cover plate and the second cover plate jointly enclose a storage space.
The battery module according to claim 8 or 9, characterized in that,

The first side frame includes a first longitudinal beam, a second longitudinal beam and at least one first cross beam, the second longitudinal beam abuts against the anti-collision member or the first side, and the second longitudinal beam Set opposite to the first longitudinal beam, the first longitudinal beam is arranged away from the anti-collision member, one end of the first cross beam is connected to the first longitudinal beam, and the other end of the first cross beam is connected to the first cross beam The two longitudinal beams are connected, and there is an included angle between the first transverse beam and the first longitudinal beam or the second longitudinal beam.
The battery module according to any one of claims 8 to 10, characterized in that,

The second side frame includes a third longitudinal beam, a fourth longitudinal beam and at least one second cross beam, the fourth longitudinal beam abuts against the anti-collision member or the third side, and the fourth longitudinal beam Set opposite to the third longitudinal beam, the third longitudinal beam is set away from the third side, one end of the second transverse beam is connected to the third longitudinal beam, and the other end of the second transverse beam is connected to the first transverse beam The four longitudinal beams are connected, and there is an included angle between the second cross beam and the third and fourth longitudinal beams.
An electrical device, characterized by comprising the battery module according to any one of claims 1-11.