Battery and electric equipment with same

Abstract

The utility model discloses a battery and electric equipment with the battery, the battery comprises a battery module, a battery shell and an electric connecting piece, the battery module comprises a first battery module and a second battery module; a cross beam is arranged in the battery shell, extends in a first direction and is used for dividing the interior of the battery shell into a first accommodating cavity and a second accommodating cavity in a second direction, the first battery module is located in the first accommodating cavity, the second battery module is located in the second accommodating cavity, and a communication hole penetrating through the cross beam in the second direction is formed in the cross beam; and the electric connecting piece is arranged in the communicating hole in a penetrating manner and is used for electrically connecting the first battery module with the second battery module. According to the battery disclosed by the embodiment of the utility model, the cross beam is provided with the communicating hole, so that the structural strength of the cross beam can be well ensured, the battery module in the battery shell can be reliably protected, the weight of the cross beam can be reduced to a certain extent through the communicating hole, and the lightweight design of the battery is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic batteries, in particular to a battery and an electrical device having the same. Background Art

[0002] In the development of new energy vehicles, safety is the first problem that the design must solve. With the increase in the requirements for the energy density of the battery pack, the space inside the battery pack is further compressed, which in turn affects the structural safety of the battery pack. In the side column collision test, in order to strengthen the structural strength of the side of the entire pack, a crossbeam needs to be added to the battery pack. And the modules need to be connected through lines. In the related art, a groove is often opened on the crossbeam so that the electrical connection structure is located in the groove. For example, a groove is opened on the crossbeam, and the groove has an opening on the upper surface of the crossbeam. In this way, when the battery module is assembled, the electrical connection structure between the first battery module and the second battery module can be accommodated in the groove. However, this method of opening a groove on the crossbeam easily reduces the structural strength of the crossbeam, which makes the crossbeam easy to be damaged when resisting external forces, and even deforms and breaks along the groove. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery, wherein a crossbeam with a connecting hole is arranged in a battery shell of the battery, which can improve the structural strength of the battery shell and also better enable two adjacent battery modules to be electrically connected.

[0004] According to an embodiment of the utility model, the battery includes: a battery module, the battery module includes a first battery module and a second battery module; a battery shell, a crossbeam is arranged in the battery shell, the crossbeam extends along a first direction, the crossbeam is used to separate a first accommodating cavity and a second accommodating cavity in the battery shell along a second direction, the first battery module is located in the first accommodating cavity, the second battery module is located in the second accommodating cavity, and a connecting hole is arranged on the crossbeam and passes through the crossbeam along the second direction, wherein the first direction and the second direction are perpendicular to each other; an electrical connector, the electrical connector is inserted in the connecting hole, and is used to electrically connect the first battery module and the second battery module.

[0005] According to the battery of the embodiment of the utility model, by providing a connecting hole on the crossbeam instead of a groove with an opening, the structural strength of the crossbeam can be better guaranteed, thereby reliably protecting the battery module in the battery shell, and the connecting hole provided can also reduce the weight of the crossbeam to a certain extent, which is conducive to the lightweight design of the battery.

[0006] In addition, the battery according to the utility model may also have the following additional technical features:

[0007] In some embodiments of the present invention, the battery shell includes a bottom plate, a top plate and side beams connected between the bottom plate and the top plate, the side beams are profile beams, and the two ends of the cross beam are respectively fixedly connected to the side beams at the two ends of the first direction.

[0008] In some embodiments of the present invention, a first flexible circuit board is provided on the first battery module, and a second flexible circuit board is provided on the second battery module. There are two first flexible circuit boards, and the two first flexible circuit boards are respectively arranged on the surfaces of the first battery module on both sides in the first direction; there are two second flexible circuit boards, and the two second flexible circuit boards are respectively arranged on the surfaces of the second battery module on both sides in the first direction; there are two electrical connectors, and each of the electrical connectors is used to connect the first flexible circuit board and the second flexible circuit board located on the same side.

[0009] In some embodiments of the present invention, the electrical connector includes: a first adapter, a second adapter and a wire, the two ends of the wire are respectively connected to the first adapter and the second adapter, the first adapter is fixedly connected to the first battery module, and the second adapter is fixedly connected to the second battery module.

[0010] In some embodiments of the present invention, the first adapter includes a first socket and a first plug that are plug-matched, the first socket is fixedly connected to the first battery module, and the first plug is connected to one end of the wire; the second adapter includes a second socket and a second plug that are plug-matched, the second socket is fixedly connected to the second battery module, and the second plug is connected to the other end of the wire.

[0011] In some embodiments of the present invention, in a projection plane perpendicular to the straight line where the second direction is located, the projection plane of the first plug and the projection plane of the second plug are both located in the projection plane of the connecting hole.

[0012] In some embodiments of the present invention, the electrical connector further comprises: at least one wire harness restraint, the wire harness restraint is fixed on the cross beam and is located adjacent to the connecting hole, the wire harness restraint is used to restrain the routing position of the wire harness.

[0013] In some embodiments of the present invention, the end of the wire harness restraint away from the crossbeam has a buckle, the buckle is annular and circumferentially provided with a notch allowing the wire harness to pass through, and the opening size of the notch is smaller than the diameter of the wire harness.

[0014] In some embodiments of the present invention, in a projection plane perpendicular to the straight line where the second direction is located, the shape of the connecting hole is circular or elliptical.

[0015] The utility model also provides an electrical device having the battery of the above embodiment.

[0016] According to the electric device of the embodiment of the utility model, by being provided with the battery of the above embodiment, the battery can be less likely to be damaged when the electric device encounters a collision, and power can be reliably supplied to the electric device, thereby improving the reliability of the electric device.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is an exploded diagram of a battery according to an embodiment of the utility model.

[0020] Figure 2 yes Figure 1 Magnified view of area A.

[0021] Reference numerals:

[0022] Battery 100,

[0023] Battery module 1, first battery module 11, first flexible circuit board 111, second battery module 12, second flexible circuit board 121,

[0024] Battery shell 2, cross beam 21, connecting hole 211, top plate 22, bottom plate 23, side beam 24,

[0025] The electrical connector 3 , the first adapter 31 , the first socket 311 , the first plug 312 , the wire 32 , the harness restraint 33 , and the buckle 331 . DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Reference below Figure 1-Figure 2 A battery 100 according to an embodiment of the present invention is described.

[0030] like Figure 1 and Figure 2 As shown, the battery 100 according to the embodiment of the utility model includes a battery module 1, a battery shell 2 and an electrical connector 3, and the battery module 1 includes a first battery module 11 and a second battery module 12. It should be noted here that the present application only takes the battery module 1 including the first battery module 11 and the second battery module 12 as an example, that is, the battery 100 package may also include three or more battery modules 1 spaced apart. Therefore, the present application does not limit the number of battery modules 1.

[0031] Furthermore, a crossbeam 21 is provided in the battery shell 2, and the crossbeam 21 extends along the first direction. The crossbeam 21 is used to separate a first accommodating cavity and a second accommodating cavity along the second direction in the battery shell 2. The first battery module 11 is located in the first accommodating cavity, and the second battery module 12 is located in the second accommodating cavity. A connecting hole 211 is provided on the crossbeam 21 and passes through the crossbeam 21 along the second direction, wherein the first direction and the second direction are perpendicular to each other.

[0032] Reference Figure 1 In a specific example shown, the first direction is Figure 1The left and right directions shown, the second direction can be Figure 2 The cross beam 21 extends in the left-right direction and is used to separate two cavities in the battery shell 2 along the front-to-back direction. The two cavities are the first accommodating cavity and the second accommodating cavity. It can be understood that the structural strength of the battery shell 2 can be improved by arranging the cross beam 21 in the battery shell 2. When the battery 100 encounters a collision, the cross beam 21 can better resist the external force, thereby reliably protecting the battery module 1 in the battery shell 2.

[0033] However, after the crossbeam 21 is arranged in the battery shell 2, the related art often opens a groove on the crossbeam 21 so that the electrical connection structure is located in the groove. For example, a groove is opened on the crossbeam 21, and the groove has an opening on the upper surface of the crossbeam 21. In this way, when the battery module 1 is assembled, the electrical connection structure between the first battery module 11 and the second battery module 12 can be accommodated in the groove. However, this method of opening a groove on the crossbeam 21 easily reduces the structural strength of the crossbeam 21, thereby making the crossbeam 21 easily damaged when resisting external forces, and even deforming and breaking along the groove.

[0034] In this application, combined Figure 2 As shown, a connecting hole 211 is provided on the cross beam 21, so that the electrical connector 3 is inserted into the connecting hole 211 for electrically connecting the first battery module 11 and the second battery module 12. Therefore, it can be understood that providing a connecting hole 211 on the cross beam 21 instead of a groove with an opening can better ensure the structural strength of the cross beam 21, thereby reliably protecting the battery module 1 in the battery shell 2, and the connecting hole 211 provided can also reduce the weight of the cross beam 21 to a certain extent, thereby facilitating the lightweight design of the battery 100.

[0035] Therefore, according to the battery 100 of the embodiment of the utility model, by setting a connecting hole 211 on the cross beam 21 instead of a groove with an opening, the structural strength of the cross beam 21 can be better guaranteed, so as to reliably protect the battery module 1 in the battery shell 2, and the connecting hole 211 set can also reduce the weight of the cross beam 21 to a certain extent, which is conducive to the lightweight design of the battery 100.

[0036] In some embodiments of the present invention, Figure 1 As shown, the battery shell 2 includes a bottom plate 23, a top plate 22 and a side beam 24 connected between the bottom plate 23 and the top plate 22. The side beam 24 is a profile beam, and the two ends of the cross beam 21 are fixedly connected to the side beams 24 at the two ends of the first direction respectively.

[0037] Reference Figure 1In the example shown, the battery shell 2 is a rectangular shell, and the side beams 24 include a first side beam 24, a second side beam 24, a third side beam 24 and a fourth side beam 24. The top plate 22 and the bottom plate 23 can be welded to the upper and lower sides of the side beam 24, respectively. Furthermore, the profile beam refers to a beam component with a certain geometric shape and size specifications that is rolled or cast by the factory according to a pre-designed cross-sectional shape. This type of beam structure usually has higher mechanical properties, and because of its standardized cross-sectional shape, it is conducive to industrial production and construction and installation. Therefore, it is widely used in the fields of building structure, bridge engineering, mechanical equipment, vehicle manufacturing, etc. The profile beam can be made of steel or aluminum. This application does not limit the material of the profile beam. In addition, common profile beams include I-beams, channel steel beams, angle steel beams, H-beams, etc. Their cross-sectional shapes are different, and the most suitable type can be selected according to the actual force requirements. Therefore, by making the side beam 24 a profile beam, the structural strength of the battery shell 2 can be better improved, so that the battery module 1 in the battery shell 2 can be more reliably protected.

[0038] Furthermore, the first battery module 11 and the second battery module 12 are both provided with flexible printed circuit boards, namely the first flexible printed circuit board 111 and the second flexible printed circuit board 121. The flexible printed circuit board (FPC) on the battery module 1 is one of the core components used to connect and manage the battery 100 units, and it plays a key role in the battery 100 management system. In the battery module 1, the main functions of the FPC include:

[0039] Voltage collection: Multiple contact points are arranged on the FPC, which are connected to the poles of the battery 100 cells through nickel sheets or other conductive materials, and the voltage of each battery 100 cell is monitored in real time to ensure the voltage balance of the battery 100 during the charging and discharging process to prevent overcharging or over-discharging;

[0040] Temperature acquisition: The FPC is integrated with temperature sensors such as NTC (negative temperature coefficient) thermistors to detect temperature changes of each battery 100 or battery 100 group to ensure that the battery 100 operates within a safe temperature range;

[0041] Current acquisition: In some high-end applications, the FPC may also include a current detection function, which uses a dedicated current sampling circuit to obtain current data of the battery 100 during charging and discharging;

[0042] Safety protection: FPC can integrate cross-connection, fuse and other functions, and provide safety mechanisms such as short circuit protection and overcurrent protection;

[0043] Communication and control: The connector on the FPC is connected to other control modules to transmit the collected data to the battery 100 management system so that the BMS can make corresponding control decisions based on this information and perform functions such as balanced charging and fault diagnosis.

[0044] Simplified assembly and weight reduction: Compared with traditional wiring harnesses, the use of FPC greatly reduces the complexity of connection, making the assembly of the battery module 1 simpler and more reliable and conducive to the overall lightweight design.

[0045] Therefore, the application of FPC in the battery module 1 significantly improves the integration, reliability and safety of the battery 100 system, and is an indispensable part of modern electric vehicles, energy storage systems and other high-power battery 100 applications.

[0046] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the first battery module 11 is provided with a first flexible circuit board 111, and the second battery module 12 is provided with a second flexible circuit board 121. There are two first flexible circuit boards 111, and the two first flexible circuit boards 111 are respectively provided on the surfaces of the first battery module 11 on both sides in the first direction; there are two second flexible circuit boards 121, and the two second flexible circuit boards 121 are respectively provided on the surfaces of the second battery module 12 on both sides in the first direction; there are two electrical connectors 3, and each electrical connector 3 is used to connect the first flexible circuit board 111 and the second flexible circuit board 121 located on the same side. Therefore, by electrically connecting the first flexible circuit board 111 and the second flexible circuit board 121 through the electrical connector 3, multiple battery modules 1 in the battery shell 2 can be better connected and managed.

[0047] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electrical connector 3 includes a first adapter 31, a second adapter and a wire 32, the two ends of the wire 32 are connected to the first adapter 31 and the second adapter respectively, the first adapter 31 is fixedly connected to the first battery module 11, and the second adapter is fixedly connected to the second battery module 12. That is to say, the first adapter 31 can be fixed on the first battery module 11, and the second adapter can be fixed on the second battery module 12, and then after the first battery module 11 and the second battery module 12 are assembled into the battery shell 2, the first adapter 31 and the second adapter are connected by the wire 32, which can not only better electrically connect the first battery module 11 and the second battery module 12, but also better reduce the difficulty of electrical connection between the first battery module 11 and the second battery module 12.

[0048] Alternatively, if Figure 1 and Figure 2As shown, the first adapter 31 includes a first socket 311 and a first plug 312 that are plug-matched, the first socket 311 is fixedly connected to the first battery module 11, and the first plug 312 is connected to one end of the wire 32; the second adapter includes a second socket and a second plug that are plug-matched, the second socket is fixedly connected to the second battery module 12, and the second plug is connected to the other end of the wire 32.

[0049] Reference Figure 1 and Figure 2 In a specific example shown, the first socket 311 can be fixed on the first flexible circuit board 111, and the second socket can be fixed on the second flexible circuit board 121. When the first battery module 11 and the second battery module 12 are assembled into the battery shell 2, the first plug 312 at one end of the wire 32 can be plugged into the first socket 311, and then the second plug at the other end of the wire 32 can be plugged into the second socket. The assembly is simple and convenient, and when the first battery module 11 and the second battery module 12 need to be disassembled or repaired, the first plug 312 can be separated from the first socket 311, or the second plug can be separated from the second socket, which can reduce the difficulty of disassembly or repair.

[0050] In some embodiments of the present invention, in a projection plane perpendicular to the straight line where the second direction is located, the projection plane of the first plug 312 and the projection plane of the second plug are both located in the projection plane of the communication hole 211 .

[0051] Reference Figure 1 and Figure 2 As shown, in the projection plane perpendicular to the straight line of the front-to-back direction, the projection plane of the first plug 312 and the projection plane of the second plug are both located in the projection plane of the connecting hole 211, that is, the first plug 312 and the second plug can both pass through the connecting hole 211 smoothly, thus improving the flexibility of the electrical connection of the electrical connector 3 to the first battery module 11 and the second battery module 12.

[0052] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the electrical connector 3 also includes: at least one wire harness restraint 33, the wire harness restraint 33 is fixed on the cross beam 21 and is located near the connecting hole 211, the wire harness restraint 33 is used to restrain the routing position of the wire harness, that is, when the electrical connection is made through the wire 32, the routing position of the wire harness can be limited by the wire harness restraint 33. On the one hand, after the wire harness is passed through the connecting hole 211, the position of the wire harness can be fixed by the wire harness restraint 33 first, so that the first plug 312 and the second plug are not easily affected by the wire harness during plug-in mating. On the other hand, by limiting the position of the wire harness by the wire harness restraint 33, interference with other structures or even wear and tear can be avoided, thereby better protecting the wire harness.

[0053] Optionally, the end of the wire harness restraint 33 away from the cross beam 21 has a buckle 331, and the buckle 331 is annular and has a notch circumferentially arranged to allow the wire harness to pass through, and the opening size of the notch is smaller than the diameter of the wire harness. Thus, the wire harness can be better inserted into the buckle 331 from the notch, and the wire harness is not easy to separate after being inserted into the buckle 331, thereby improving the reliability of the connection between the wire harness restraint 33 and the wire harness, and after the wire harness is inserted into the buckle 331, the wire harness can also be separated from the buckle 331, thereby realizing the detachability between the wire harness and the wire harness restraint 33, which is beneficial to the replacement of the wire harness, or the replacement of the wire harness restraint 33.

[0054] In some embodiments of the present invention, in the projection plane perpendicular to the straight line where the second direction is located, the shape of the communication hole 211 is circular or elliptical. In other words, the shape of the communication hole 211 can be a circular hole or an elliptical hole. Such a configuration can not only reduce the processing difficulty of the communication hole 211, but also, whether it is a circular hole or an elliptical hole, it is conducive to uniformly dispersing the force on the beam 21, thereby improving the overall stability and bearing capacity of the beam 21.

[0055] The utility model also provides an electrical device having the battery 100 of the above embodiment.

[0056] According to the electric device of the embodiment of the utility model, by being provided with the battery 100 of the above embodiment, the battery 100 can be less likely to be damaged when the electric device encounters a collision, and can reliably supply power to the electric device, thereby improving the reliability of the electric device.

[0057] Other structures and operations of the battery 100 and the electrical equipment according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0058] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that: include: A battery module, wherein the battery module comprises a first battery module and a second battery module; A battery shell, wherein a crossbeam is disposed in the battery shell, the crossbeam extends along a first direction, the crossbeam is used to separate a first accommodating cavity and a second accommodating cavity in the battery shell along a second direction, the first battery module is located in the first accommodating cavity, the second battery module is located in the second accommodating cavity, and a connecting hole is disposed on the crossbeam and passes through the crossbeam along the second direction, wherein the first direction and the second direction are perpendicular to each other; An electrical connector is inserted into the communication hole and is used to electrically connect the first battery module and the second battery module.

2. The battery according to claim 1, characterized in that The battery shell includes a bottom plate, a top plate and side beams connected between the bottom plate and the top plate, the side beams are profile beams, and the two ends of the cross beam are respectively fixedly connected to the side beams at the two ends of the first direction.

3. The battery according to claim 1, characterized in that The first battery module is provided with a first flexible circuit board, and the second battery module is provided with a second flexible circuit board. There are two first flexible circuit boards, and the two first flexible circuit boards are respectively arranged on the surfaces of both sides of the first battery module in the first direction; There are two second flexible circuit boards, and the two second flexible circuit boards are respectively arranged on the surfaces of both sides of the second battery module in the first direction; Two electrical connectors are provided, and each of the electrical connectors is used to connect the first flexible circuit board and the second flexible circuit board located on the same side.

4. The battery according to claim 1, characterized in that The electrical connector comprises: A first adapter, a second adapter and a wire, two ends of the wire are respectively connected to the first adapter and the second adapter, the first adapter is fixedly connected to the first battery module, and the second adapter is fixedly connected to the second battery module.

5. The battery according to claim 4, characterized in that The first adapter comprises a first socket and a first plug that are plugged together, the first socket is fixedly connected to the first battery module, and the first plug is connected to one end of the wire; The second adapter includes a second socket and a second plug that are plug-matched, the second socket is fixedly connected to the second battery module, and the second plug is connected to the other end of the wire.

6. The battery according to claim 5, characterized in that In a projection plane perpendicular to the straight line where the second direction is located, the projection plane of the first plug and the projection plane of the second plug are both located in the projection plane of the connecting hole.

7. The battery according to claim 4, characterized in that The electrical connector also includes: at least one wire harness restraint, which is fixed on the crossbeam and adjacent to the connecting hole, and is used to restrain the routing position of the wire harness.

8. The battery according to claim 7, characterized in that The end of the harness restraint away from the cross beam has a buckle, the buckle is annular and circumferentially provided with a notch for allowing the harness to pass through, and the opening size of the notch is smaller than the diameter of the harness.

9. The battery according to claim 1, characterized in that In a projection plane perpendicular to the straight line where the second direction is located, the shape of the connecting hole is circular or elliptical.

10. An electrical device, characterized in that: A battery comprising the battery according to any one of claims 1 to 9.

Images