Battery packs and power consuming devices

Abstract

The present application relates to the field of battery technology and discloses a battery pack and a power consumption device, the battery pack includes a cell prosthesis and a plurality of individual cells, the battery pack further includes a case, a mounting beam and a support beam, the case is provided with a receiving cavity, the cell prosthesis and the plurality of individual cells are all provided within the receiving cavity, the mounting beam is installed along the longitudinal direction of the receiving cavity and defines an installation space together with the receiving cavity for receiving the cell prosthesis and the plurality of individual cells, the support beam is installed along the width direction of the receiving cavity and is fitted and attached to the cell prosthesis. By installing a support beam perpendicular to the mounting beam on the cell prosthesis, the structural strength of the battery pack in the width direction of the receiving cavity can be increased, the pressing and collision strength of the battery pack in this direction can be improved, and the safety of the battery pack can be improved.

Description

[Technical field]

[0001] [CROSS REFERENCE TO RELATED APPLICATIONS] This application claims priority to Chinese Patent Application No. 202220075726.1, entitled "Battery Pack and Power Consumption Device," filed on January 12, 2022, the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE DISCLOSURE Embodiments of the present application relate to the field of battery technology, and more particularly to battery packs and power consuming devices. [Background technology]

[0003] Currently, electric vehicles are being actively developed in various countries around the world. As one of the three core technologies of electric vehicles, the safety and stability of electric vehicle battery packs directly affect the performance and driving safety of the finished electric vehicle.

[0004] However, in the conventional power battery pack, there is only one internal beam in one direction, and it is generally a vertical beam. Due to the process assembly requirements and structural requirements of the horizontal battery pack (the horizontal battery pack structure includes a water-cooling plate structure in the horizontal position in the middle of the battery pack), the conventional vertical internal beam cannot be arranged in the case, which weakens the strength in this direction, and the situation is particularly poor when a collision or pressing situation occurs in this direction. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide a battery pack and a power consuming device that improve the strength of the battery pack, enhance the stability of the battery pack, and extend the service life of the battery pack.

[0006] According to a first aspect, an embodiment of the present application provides a battery pack, the battery pack including a cell prosthesis and a plurality of cell units, the battery pack further including a case, a mounting beam and a support beam, the case being provided with an accommodating cavity, the cell prosthesis and the plurality of cell units being both provided within the accommodating cavity, the mounting beam being installed along the longitudinal direction of the accommodating cavity and defining, together with the accommodating cavity, an installation space for accommodating the cell prosthesis and the plurality of cell units, and the support beam being installed along the width direction of the accommodating cavity and being fitted and attached to the cell prosthesis.

[0007] In the technical solution of the embodiment of the present application, a support beam perpendicular to the mounting beam is installed on the cell prosthesis, thereby increasing the structural strength of the battery pack in the width direction of the accommodating cavity, improving the compression and collision strength of the battery pack in this direction, and improving the safety of the battery pack.

[0008] In some embodiments, the support beams protrude from the cell prosthesis to mate with mounting beams that together maintain structural strength along the length and width of the battery pack cavity.

[0009] In some embodiments, the cell prosthesis has mounting holes extending therethrough, and the support beams are disposed in the mounting holes and extend from both ends of the mounting holes. The placement of the mounting holes facilitates assembly of the support beams.

[0010] In some embodiments, the support beams are integrally formed with the mounting beams, and the support beams are provided in the mounting holes. When the support beams are integrally formed with the mounting beams, a higher degree of integration is achieved.

[0011] In some embodiments, the support beam is integrally molded with the cell prosthesis to prevent assembly errors between the support beam and the cell prosthesis from affecting the strength of the battery pack's receiving cavity in the width direction.

[0012] In some embodiments, the support beams abut the mounting beams, thereby providing increased rigidity to the battery pack and protecting the poles of the individual cells.

[0013] In some embodiments, there is a gap between the support beam and the attachment beam, thereby facilitating attachment of the support beam and / or the cell prosthesis.

[0014] In some embodiments, the gap is filled with a structural rubber, thereby filling the gap and increasing the strength of the battery pack.

[0015] In some embodiments, the cell unit is provided on either side of the cell prosthesis along the length of the receiving cavity, thereby ensuring that the cell prosthesis is provided in the middle of the length of the receiving cavity, thereby improving the stability of the battery pack.

[0016] In some embodiments, the cell prosthesis is located close to the bottom of the receiving cavity, thereby avoiding adding unnecessary joints and increasing process difficulty.

[0017] According to a second aspect, an embodiment of the present application further provides a power consuming device, the power consuming device including the above-mentioned battery pack, the battery pack being used for providing electrical energy.

[0018] The above description is only an outline of the technical solution of the present application, which can be implemented in accordance with the content of the specification, in order to make the technical means of the present application more clearly known, and in order to make the above and other objectives, features and advantages of the present application more clearly understandable, the following particularly cites specific embodiments of the present application for description. [Brief description of the drawings]

[0019] In order to more clearly describe the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the embodiments of the present application. It is obvious that the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts. [Figure 1] 1 is a structural schematic diagram of a battery pack in one embodiment of the present application. [Diagram 2] FIG. 2 is a schematic diagram showing the attachment of the cell brace and the support beam in the battery pack shown in FIG. 1. [Diagram 3] 2 is an enlarged schematic view of the location of a cell prosthesis in the battery pack shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific examples. It should be noted that when an element is described as being "mounted" / "fixed" / "connected" to another element, it may be directly connected to the other element, or there may be one or more intermediate elements between them. When an element is described as being "connected" to another element, it may be directly connected to the other element, or there may be one or more intermediate elements between them. The orientations or positional relationships indicated by the terms "bottom", "head end", "tail end", etc. used in this specification are orientations or positional relationships shown based on the drawings, and are merely for the convenience and simplification of the description of this application, and do not indicate or imply that the devices or elements referred to have a specific orientation and must be configured and operated in a specific orientation, and should not be understood as limitations on this application. It should be noted that the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

[0021] In describing the embodiments of the present application, the term "plurality" refers to two or more (including two).

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0023] In addition, the technical features relating to different embodiments of the present application described below can be combined with each other if there is no contradiction between them.

[0025] At present, in view of the development of the market situation, the application of power battery packs is becoming more and more widespread. Power battery packs are not only widely used in energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also in electric transportation tools such as electric bicycles, electric motorcycles and electric cars, as well as in military equipment and aerospace. With the continuous expansion of the application fields of power battery packs, the market demand for them is also constantly expanding.

[0026] The battery pack disclosed in the embodiments of the present application can be used in, but is not limited to, power consuming devices such as vehicles, ships, or aircraft, etc. The battery pack disclosed in the present application may be used to configure the power supply system of the power consuming device, thus advantageously mitigating the problem that the insufficient strength of the battery pack affects the service life of the battery pack.

[0027] Referring to FIG. 1, this is a structural schematic diagram of a battery pack 1 according to one embodiment of the present application. The battery pack 1 includes a case 10, a mounting beam 20, a plurality of cell units 30, a cell prosthesis 40, and a support beam 50. The case 10 is provided with an accommodating cavity 101, and the cell prosthesis 40 and the plurality of cell units 30 are both provided within the accommodating cavity 101. The mounting beam 20 is installed along the longitudinal direction of the accommodating cavity 101 and, together with the accommodating cavity 101, defines an installation space for accommodating the cell prosthesis 40 and the plurality of cell units 30. The support beam 50 is installed along the width direction of the accommodating cavity 101 and is fitted and attached to the cell prosthesis 40.

[0028] By installing a support beam perpendicular to the mounting beam on the cell prosthesis, the structural strength of the battery pack's storage cavity in the width direction can be increased, improving the pressure and collision strength of the battery pack in this direction and improving the safety of the battery pack.

[0029] Referring to FIG. 2, for convenience of description, the longitudinal direction of the receiving cavity is defined as an x-direction, the width direction of the receiving cavity is defined as a y-direction, and the direction perpendicular to the x-direction and y-direction is defined as a z-direction.

[0030] In some embodiments, the support beams 50 protrude from the cell prosthesis 40 and thereby mate with the mounting beams 20, together maintaining the structural strength of the battery pack 1 in the x and y directions.

[0031] In some embodiments, the support beam 50 is separate from the cell prosthesis 40, for example the cell prosthesis 40 has mounting holes (not shown) extending therethrough along the y-direction, and the support beam 50 is mounted in the mounting holes and protrudes from both ends of the mounting holes. The placement of the mounting holes can facilitate assembly of the support beam 50.

[0032] As can be understood, the support beam may be a clearance fit or an interference fit with the mounting hole, to which the present application does not impose any limitations. When the support beam is a clearance fit with the mounting hole, a further locking device can lock the support beam and the cell prosthesis to prevent the support beam from swinging in the mounting hole. Or the support beam is fixedly attached to the mounting hole, for example the fixed attachment can be welding.

[0033] In some embodiments, the support beam 50 is integrally molded with the mounting beam 20, and the support beam 50 is mounted in the mounting hole. When the support beam 50 and the mounting beam 20 are integrally molded, a higher degree of integration is achieved.

[0034] In some embodiments, the support beam 50 is integrally molded with the cell prosthesis 40, thereby preventing assembly errors between the support beam 50 and the cell prosthesis 40 from affecting the structural strength of the battery pack in the y-direction.

[0035] In some embodiments, referring to FIG. 3, the support beam 50 abuts the mounting beam 20, thereby increasing the stiffness of the battery pack in the y-direction.

[0036] In some embodiments, when the support beam 50 is integrally molded with the cell prosthesis 40, there is a gap between the support beam 50 and the mounting beam 20 to facilitate placing the support beam 50 and / or the cell prosthesis 40 in the mounting space. The gap is filled with structural rubber to ensure the stiffness of the battery pack in the y-direction.

[0037] In some embodiments, the cell prosthesis 40 and the multiple cell units 30 are stacked and arranged in the mounting space, for example, the cell prosthesis 40 and the multiple cell units 30 are stacked and arranged along the x direction, or the cell prosthesis 40 and the cell units 30 are stacked and arranged along the y direction, or the cell prosthesis 40 and the cell units 30 are stacked and arranged along the z direction.

[0038] In an embodiment of the present application, as shown in FIG. 2, the cell prosthesis 40 and a plurality of the cell units 30 are stacked and arranged along the x direction, and the cell prosthesis 40 and the cell units 30 are stacked and arranged along the z direction.

[0039] As can be seen, for ease of installation, the size of the cell prosthesis is the same as the size of the cell alone.

[0040] In addition, the structural strength of the cell prosthesis is greater than that of a single cell, and the provision of the cell prosthesis can effectively improve the structural strength of the battery pack.

[0041] It should be noted that each of the plurality of cell units has a pole, and the poles protrude toward the same side. In the embodiment of the present application, the poles protrude toward the y direction.

[0042] In some embodiments, the height of the support beam 50 protruding from the cell prosthesis 40 is greater than the height of the pole post protruding from the cell unit 30, so that the support beam 50 can protect the pole post of the cell unit and prevent damage to the pole post due to a collision.

[0043] In some embodiments, in order to enhance the stability of the battery pack 1, the cell unit 30 is provided on both sides of the cell prosthesis 40 along the x direction, thereby ensuring that the support beam 50 is located in the center of the mounting space.

[0044] It should be noted that the middle portion refers to the position of the non-leading and trailing ends of the stacked cell in which the cell prosthesis is located along the x direction, i.e., between the leading and trailing ends of the stacked cell in which the cell prosthesis is located along the x direction.

[0045] In some embodiments, the cell prosthesis 40 is installed close to the bottom of the receiving cavity 101. Specifically, the cell prosthesis is located at the neck end of the stacked cells along the z direction, thereby avoiding increasing unnecessary water-cooling joint structures, wasting installation space, and increasing the weight of the battery pack. Specifically, in a horizontal battery pack, a water-cooling joint is generally installed at the middle position of the receiving cavity along the z direction, and if the cell prosthesis is located at the middle or above the middle position of the receiving cavity along the z direction, the support beam and / or cell prosthesis will necessarily interfere with the water-cooling joint, and an additional water-cooling joint will necessarily be added to ensure that the cooling water can enter the cooling channel of the water-cooling plate.

[0046] An embodiment of the present application further provides a power consuming device, which includes the above battery pack 1, and the battery pack 1 is used for providing electrical energy.

[0047] The power consumption device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a steamship, a spacecraft, etc. Here, the electric toy may include stationary or mobile electric toys, such as a game console, an electric car toy, an electric steamship toy, an electric plane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0048] Compared with the conventional technology, the battery pack and power consumption device according to the embodiments of the present application can increase the structural strength of the battery pack in the width direction of the accommodating cavity by installing a support beam perpendicular to the mounting beam on the cell prosthesis, thereby improving the compressive and collision strength of the battery pack in this direction and improving the safety of the battery pack.

[0049] Finally, it should be explained that the above examples are only for illustrating the technical solution of the present application, and are not limited thereto. Under the concept of the present application, the technical features in the above examples or different examples may be combined, the steps may be realized in any order, and there are many other variations of the different aspects of the present application described above, which are not provided in detail for the sake of clarity. Although the present application has been described in detail with reference to the above examples, those skilled in the art will understand that the technical solutions described in the above examples can still be modified or equivalently replaced for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of each embodiment of the present application. [Explanation of symbols]

[0050] The symbols in the embodiment for carrying out the invention are as follows. Battery pack 1, case 10, storage cavity 101, mounting beam 20, individual cell 30, cell prosthesis 40, support beam 50.

Claims

1. A battery pack including a cell prosthesis and a plurality of individual cells, a case having a receiving cavity, the cell prosthesis and the plurality of single cells being both provided within the receiving cavity; a mounting beam disposed along a longitudinal direction of the receiving cavity and defining, together with the receiving cavity, a mounting space for receiving the cell prosthesis and the plurality of single cells; a support beam disposed along a width direction of the receiving cavity and mated with the cell prosthesis; the support beam protruding from the cell prosthesis; A battery pack, characterized in that a mounting hole is formed through the cell prosthesis, and the support beam is provided in the mounting hole and protrudes from both ends of the mounting hole.

2. 2. The battery pack of claim 1, wherein the support beams are mounted independently of the cell prosthesis.

3. 3. The battery pack according to claim 1, wherein each of the plurality of cell units has a pole, the pole protruding toward the width direction of the accommodating cavity, and the height of the support beam protruding from the cell support is greater than the height of the pole protruding from the cell unit.

4. 3. The battery pack of claim 2, wherein the support beam is integrally formed with the mounting beam, and the support beam is provided in the mounting hole.

5. 3. The battery pack according to claim 1, wherein the support beam abuts the mounting beam.

6. 3. The battery pack according to claim 1, wherein there is a gap between the support beam and the mounting beam.

7. 3. The battery pack according to claim 1, wherein the cell prosthesis and the plurality of single cells are stacked and installed in the mounting space.

8. 3. The battery pack according to claim 1, wherein the single cell is provided on both sides of the cell prosthesis along the longitudinal direction of the storage cavity.

9. 9. The battery pack according to claim 8, wherein along a width direction of the receiving cavity, the cell prosthesis is disposed close to a bottom of the receiving cavity.

10. 3. A power consuming device comprising a battery pack according to claim 1 or 2, the battery pack being used to provide electrical energy.

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