Battery pack integration method, apparatus, system, and battery pack

Abstract

Embodiments of the present specification provide a battery pack integration method, device, system and battery pack. In the battery pack integration method, a cell module is fixedly connected to a module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least one set of cells arranged in sequence; a plurality of sets of cell module-tray frame units are connected side by side, so that the module tray frames connected side by side form a frame of a battery tray to assemble the battery tray; and an integrated battery pack is assembled based on the battery tray and the plurality of cell modules fixed therein.

Description

Technical Field

[0001] The embodiments in this specification generally relate to the field of battery technology, and more specifically, to battery pack integration methods, devices, systems, and battery packs. Background Technology

[0002] In the field of battery pack integration, the traditional integration method is CTM (Cell to Module), which assembles cells into modules, and then installs the modules into the battery pack, forming a three-level assembly model of "cell-module-battery pack". Later, the module-less battery pack integration method CTP (Cell to Pack) was proposed and gradually adopted. Currently, there are two main technical routes for CTP: one is a completely module-less approach, and the other is to use large modules instead of small modules. In the first technical route, the battery box and cell assembly are usually produced separately first, and then the cell assembly is hoisted into the box after the box assembly is completed. However, this method requires that the cell arrangement and stacking be carried out separately from the battery box assembly, making the assembly process cumbersome. Moreover, especially in the cell assembly hoisting into the box, extremely high precision is required in controlling the clamping force between the cells. Because it is difficult to effectively control the expansion of the cells during use, this assembly method is very difficult. In the second technical approach, to group the battery cells into a battery pack, the cells are typically designed as a cell stack. This cell stack is usually larger and simpler in structure than the original module; it is essentially a simplification of the module, but the design concept remains the same: "cell-module-battery pack". Therefore, providing a novel CTP battery pack integration method is of great significance. Summary of the Invention

[0003] In view of the above, embodiments of this specification provide a battery pack integration method, device, system, and battery pack. Using this battery pack integration scheme, by directly mounting the cell modules onto a module tray frame that is part of the battery tray, a portion of the housing is installed during the cell assembly process. Then, the cell module-tray frame unit with the installed cell modules is connected as a whole, enabling simultaneous cell assembly and housing installation without the need for separate assembly of the housing and cell assembly. This provides a novel CTP battery pack integration scheme that is significantly different from other CTP methods.

[0004] According to one aspect of an embodiment of this specification, a battery pack integration method is provided, comprising: fixing a cell module to a module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a group of cells arranged in sequence; connecting several groups of cell module-tray frame units in parallel, thereby forming a frame of a battery tray through the parallel-connected module tray frames, for assembling the battery tray; and assembling an integrated battery pack based on the battery tray and several cell modules fixed therein.

[0005] According to another aspect of the embodiments of this specification, a battery pack integration device is provided, comprising: a cell module assembler configured to fix cell modules to a module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a group of cells arranged in sequence; a tray assembler configured to connect several groups of cell module-tray frame units in parallel, thereby forming a battery tray frame through which the parallel-connected module tray frames form a battery tray frame for assembling the battery tray; and a battery pack integrator configured to assemble an integrated battery pack based on the battery tray and several cell modules fixed therein.

[0006] According to another aspect of the embodiments of this specification, a battery pack is provided, manufactured according to the battery pack integration method described above, comprising: a cell module, wherein the cell module includes at least a group of cells arranged in sequence; a battery tray for carrying the cell module, wherein the battery tray is framed by module tray frames connected in parallel, each module tray frame and the cell module fixed therein forming a cell module-tray frame unit; and a battery pack cover.

[0007] According to another aspect of the embodiments of this specification, a battery pack integration system is provided, including a controller, a cell module assembler, a tray assembler, and a battery pack integrator, wherein the controller is configured to: control the cell module assembler to fix cell modules to a module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a group of cells arranged in sequence; control the tray assembler to connect several groups of cell module-tray frame units in parallel, thereby forming a battery tray frame through parallel connection of the module tray frames for assembling the battery tray; and control the battery pack integrator to assemble an integrated battery pack based on the battery tray and several cell modules fixed therein. Attached Figure Description

[0008] A further understanding of the nature and advantages of this specification can be achieved by referring to the following figures. In the figures, similar components or features may have the same reference numerals.

[0009] Figure 1 A flowchart illustrating an example of a battery pack integration method according to an embodiment of this specification is shown.

[0010] Figure 2A A flowchart illustrating yet another example of a battery pack integration method according to an embodiment of this specification is shown.

[0011] Figure 2B A schematic diagram of an example of a module tray frame in a battery pack integration method according to an embodiment of this specification is shown.

[0012] Figure 3 A schematic diagram illustrating an example of the assembly process of a cell module-tray frame unit in a battery pack integration method according to an embodiment of this specification is shown.

[0013] Figure 4 A schematic diagram of yet another example of the assembly process of the cell module-tray frame unit in the battery pack integration method according to an embodiment of this specification is shown.

[0014] Figure 5 A schematic diagram illustrating an example of the connection process between the cell module and the tray frame unit in a battery pack integration method according to an embodiment of this specification is shown.

[0015] Figure 6 A schematic diagram of an example of a friction stir weld bead in a battery pack integration method according to an embodiment of this specification is shown.

[0016] Figure 7 A schematic diagram illustrating an example of the assembly process of a battery tray in a battery pack integration method according to an embodiment of this specification is shown.

[0017] Figure 8 A block diagram of an example battery pack integration device according to an embodiment of this specification is shown.

[0018] Figure 9 A schematic diagram of an example battery pack according to an embodiment of this specification is shown.

[0019] Figure 10 A block diagram of an example battery pack integration system according to an embodiment of this specification is shown. Detailed Implementation

[0020] The subject matter described herein will be discussed below with reference to exemplary embodiments. It should be understood that these embodiments are discussed merely to enable those skilled in the art to better understand and implement the subject matter described herein, and are not intended to limit the scope, applicability, or examples set forth in the claims. The function and arrangement of the elements discussed may be changed without departing from the scope of the embodiments described herein. Various processes or components may be omitted, substituted, or added as needed in the various examples. Furthermore, features described in some examples may be combined in other examples.

[0021] As used herein, the term "comprising" and its variations are open terms meaning "including but not limited to". The term "based on" means "at least partially based on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other definitions, whether explicit or implicit, may be included below. Unless explicitly indicated by the context, the definition of a term shall remain consistent throughout the specification.

[0022] The flowcharts used in this specification illustrate operations implemented according to some embodiments of this specification. It should be clearly understood that the operations in the flowcharts may not be implemented in a sequential order. Instead, the operations may be implemented in reverse order or simultaneously. Furthermore, one or more additional operations may be added to the flowcharts. One or more operations may be removed from the flowcharts.

[0023] The battery pack integration method, apparatus, system, and battery pack according to embodiments of this specification will now be described in detail with reference to the accompanying drawings.

[0024] Figure 1 A flowchart illustrating an example of a battery pack integration method 100 according to an embodiment of this specification is shown.

[0025] like Figure 1 As shown, in step S110, the cell module is fixedly connected to the module tray frame to form a cell module-tray frame unit.

[0026] In this embodiment, the cell module may include at least a group of cells arranged in sequence. In some examples, multiple cells may be arranged sequentially along their thickness direction. In some examples, multiple cells may be arranged sequentially along their width direction. In some examples, the cell module may also include additional structures required for arranging the cells into groups, such as injection-molded end plates, busbars between cells, integrated busbars (Cells Contact System, CCS), low-voltage connectors, and fillers between cells.

[0027] In this embodiment, the module tray frame may include various structures for carrying the battery cell modules. In some examples, the module tray frame may be made of aluminum alloy.

[0028] In this embodiment, the battery cell module can be fixedly connected to the module tray frame in various ways. In some examples, when multiple battery cells are arranged along their thickness or width direction, the surface formed by the battery cell arrangement direction and the length of the battery cells can be used as the bottom surface of the battery cell module, and structural adhesive can be used to bond the battery cell module to the module tray frame.

[0029] In step S120, several groups of cell module-tray frame units are connected in parallel, so that the parallel connected module tray frames form the frame of the battery tray for assembling the battery tray.

[0030] In this embodiment, several sets of cell module-tray frame units can be connected side by side. In some examples, welding can be used to connect several sets of cell module-tray frame units side by side. In some examples, friction stir welding can be used to weld several sets of cell module-tray frame units side by side. It can be understood that the several sets of cell modules in the cell module-tray frame units connected in the above-mentioned parallel arrangement are placed side by side.

[0031] In this embodiment, the modular tray frames connected in parallel can form the frame of the battery tray, and then other components of the battery tray are assembled to complete the assembly of the battery tray. In some examples, other components of the battery tray may include the front and rear frames of the tray obtained by casting, as well as protective plates, fillers, etc.

[0032] In step S130, an integrated battery pack is assembled based on the battery tray and several cell modules already fixed therein.

[0033] In this embodiment, an integrated battery pack can be assembled based on a battery tray and several cell modules already fixed therein. In some examples, various components typically required for improving battery pack safety can be further assembled on this basis. In some examples, these components may include a battery pack cover for sealing and providing structural protection, which is typically made of composite materials. In some examples, these components may also include a liquid cooling plate for cooling and heating the cells. In some examples, thermally conductive structural adhesive can be used to bond the cell modules to the liquid cooling plate. In some examples, the liquid cooling plate may be placed on top of the cell modules. In some examples, these components may also include a sealing gasket placed between the liquid cooling plate and the battery pack cover. In some examples, these components may also include a bottom cover placed under the battery tray to provide bottom protection and sealing. In some examples, these components may also include a sealing gasket placed between the battery tray and the bottom cover. In some examples, the aforementioned components may also include corresponding electronic and electrical components, such as including but not limited to at least one of the following: a battery disconnect unit (BDU), a high-voltage busbar for connecting the battery cell to the BDU, a battery management system (BMS), and an external communication interface.

[0034] Figure 2A A flowchart illustrating yet another example of a battery pack integration method 200 according to an embodiment of this specification is shown.

[0035] like Figure 2A As shown, in step S210, the end plate is fixedly connected between two parallel elongated components and near one end of one of the elongated components to form a module tray frame.

[0036] In this embodiment, two elongated components and an end plate can form a cavity for accommodating the battery cell module. In some examples, the elongated components can be aluminum angle profiles. In some examples, the distance between the end plate and the end point of the elongated component can be preset. In some examples, the end plate can also be made of extruded profile. In some examples, the end plate can be welded to the elongated components to form a module tray frame.

[0037] In some examples, the resulting module tray frame can be as follows: Figure 2B As shown.

[0038] In step S220, the cell module is fixedly connected to the module tray frame to form a cell module-tray frame unit.

[0039] In step S230, several groups of cell module-tray frame units are connected in parallel, so that the parallel connected module tray frames form the frame of the battery tray for assembling the battery tray.

[0040] In step S240, an integrated battery pack is assembled based on the battery tray and several cell modules already fixed therein.

[0041] It should be noted that steps S220-S240 can be referred to the above. Figure 1 The relevant descriptions of steps S110-S130 in the embodiments will not be repeated here.

[0042] The above method provides a complete battery pack integration method including the manufacturing steps of the modular tray frame.

[0043] Figure 3 A schematic diagram illustrating an example of the assembly process 300 of the cell module-tray frame unit in the battery pack integration method according to an embodiment of this specification is shown.

[0044] In this embodiment, the battery cells in the battery cell module can be arranged sequentially along its width or thickness direction. For example... Figure 3 As shown, the battery cells in the battery cell module can be arranged sequentially along its thickness direction. The arrangement direction of the battery cells in the battery cell module 310 can be aligned with the extension direction of the elongated components 322 and 323. The battery cell 311 located at one end of the battery cell module 310 is then abutted against the end plate 321. The battery cell module 310 is then glued to the module tray frame 320. In some examples, the required preload force for the battery cells can be maintained using tooling fixtures during the above process. In some examples, the operation of maintaining the required preload force for the battery cells can continue until the battery tray assembly is completed, for example, until... Figure 7 The front and rear frames of the tray shown are now welded.

[0045] In some examples, structural adhesive can be used to bond the bottom surface of the cell module 310 to the groove formed by the elongated components 322 and 323, thereby fixing the cell module 310 to the module tray frame 320.

[0046] The above method provides a way to directly mount the battery cell module onto a module tray frame that is part of the battery tray.

[0047] Figure 4 This diagram illustrates yet another example of the assembly process 400 of the cell module-tray frame unit in the battery pack integration method according to an embodiment of this specification.

[0048] like Figure 4 As shown, the electrodes of the battery cell can be located on the side of the battery cell module 410 along the battery cell arrangement direction (e.g., Figure 4 As shown in 411 and 412. In some examples, the positive and negative electrodes of the cell can be located on the same side of the cell module 410 along the cell arrangement direction (e.g., ...). Figure 4 As shown in 411 or 412. In some examples, the positive and negative electrodes of the cell can be located on two sides of the cell module 410 along the cell arrangement direction (e.g., ...). Figure 4 (As shown in 411 and 412). In some examples, bus 420 can be soldered to the electrodes located on the side of cell module 410. In some examples, if the positive and negative electrodes of the cell are located on the same side of cell module 410 along the cell arrangement direction, bus 420 can be soldered to the electrode located on that side. In some examples, if the positive and negative electrodes of the cell are located on two different sides of cell module 410 along the cell arrangement direction, bus 420 can be soldered to the electrodes located on the two different sides. It is understood that the connection method between bus 420 and the electrodes on the side of cell module 410 can be determined according to the actual connection requirements between cells (e.g., series, parallel, etc.). In some examples, an integrated bus 430 can then be installed onto the cell module 410 with bus 420 soldered on to form a cell module-tray frame unit.

[0049] The above method provides a way to directly mount battery cell modules onto a module tray frame that is part of the battery tray, as well as to assemble busbars and integrated busbars.

[0050] Figure 5 A schematic diagram illustrating an example of the cell module-tray frame unit connection process 500 in a battery pack integration method according to an embodiment of this specification is shown.

[0051] like Figure 5 As shown, several sets of cell modules-tray frame units (e.g.) can be combined. Figure 5The cells 510, 520, and 530 shown are connected side-by-side with elongated components as the mating reference. In some examples, the cell module-tray frame unit 510 may include elongated components 511 and 512. Similarly, the cell module-tray frame unit 520 may include elongated components 521 and 522, and the cell module-tray frame unit 530 may include elongated components 531 and 532. In these examples, the cell module-tray frame unit 510 and the cell module-tray frame unit 520 may be connected with elongated components 512 of the cell module-tray frame unit 510 and 521 of the cell module-tray frame unit 520 as the mating reference. Similarly, the cell module-tray frame unit 520 and the cell module-tray frame unit 530 may be connected with elongated components 522 of the cell module-tray frame unit 520 and 531 of the cell module-tray frame unit 530 as the mating reference.

[0052] It should be noted that, although Figure 5 Only three sets of cell modules-tray frame units are shown in the image (e.g., Figure 5 The parallel connection between 510, 520, and 530 is shown in the figure, but it is understood that two or more sets of cell modules-tray frame units can also be connected in parallel in a similar manner.

[0053] In some examples, the parallel connection between elongated assemblies of different cell modules-tray frame units can be achieved using friction stir welding. In the examples above, friction stir welding can be used between elongated assemblies 512 and 521, and between elongated assemblies 522 and 531. In some examples, the friction stir weld beads can be as follows: Figure 6 As shown.

[0054] The above method provides a framework for combining multiple cell modules-tray frame units into a battery tray.

[0055] Figure 7 A schematic diagram illustrating an example of the battery tray assembly process 700 in a battery pack integration method according to an embodiment of this specification is shown.

[0056] like Figure 7 As shown, the outer frame beams can be welded to the outermost elongated components of the modular pallet frame connected in parallel to provide lateral protection. Referring to the foregoing example, the outer frame beams can be welded to the outermost elongated components 511 and 532 of the modular pallet frame connected in parallel, respectively. Alternatively, elongated components (e.g. Figure 5The elongated components 511, 512, 521, 522, 531, and 532 shown serve as the longitudinal beams of the battery tray. A front tray frame and a rear tray frame are welded to both ends of the elongated components, ultimately forming the battery tray. In some examples, the front and rear tray frames can have the same or different constructions to accommodate battery trays with different front and rear structures. In some examples, the structure of the rear tray frame is adapted to the elongated components of the modular tray frame to provide space between the rear tray frame and the end plate for accommodating electronic and electrical components such as the BDU and BMS.

[0057] The above method provides a way to assemble a battery tray based on multiple cell module-tray frame units.

[0058] use Figures 1-7 The battery pack integration method disclosed herein directly installs the cell modules onto a module tray frame that is part of the battery tray. This allows part of the housing to be installed during the cell assembly process. Then, the cell module-tray frame unit with the cell modules installed is connected as a whole. This enables cell assembly and housing installation to be carried out simultaneously without the need to assemble the housing and cell assembly separately. This provides a novel CTP battery pack integration solution that is significantly different from other CTP methods.

[0059] Figure 8 A block diagram of an example battery pack integration device 800 according to an embodiment of this specification is shown. This battery pack integration device embodiment can be compared with Figure 2- Figure 7 The method embodiments shown correspond to each other and can be specifically applied to various electronic devices.

[0060] like Figure 8 As shown, the battery pack integration device 800 may include a cell module assembler 810, a tray assembler 820, and a battery pack integrator 830.

[0061] The cell module assembler 810 is configured to securely connect cell modules to a module tray frame to form a cell module-tray frame unit. The cell module comprises at least one set of cells arranged in sequence.

[0062] The tray assembler 820 is configured to connect several groups of cell module-tray frame units in parallel, thereby forming a battery tray frame through the parallel connection of the module tray frames for assembling the battery tray.

[0063] The battery pack integrator 830 is configured to assemble an integrated battery pack based on the battery tray and several cell modules already fixed therein.

[0064] It is understood that the detailed descriptions of the cell module assembler 810, tray assembler 820, and battery pack integrator 830 above can be found in Figure 2 above. Figure 7 The specific steps in the embodiments will not be repeated here.

[0065] In some examples, the battery pack integration device can be implemented in hardware, software, or a combination of hardware and software. In some examples, the cell module assembler 810, tray assembler 820, and battery pack integrator 830 can be various automated operating devices capable of performing the corresponding functions described above.

[0066] Figure 9 A schematic diagram of an example of a battery pack 900 according to an embodiment of this specification is shown.

[0067] like Figure 9 As shown, the electronic device 900 can be manufactured according to the battery pack integration method described above. The electronic device 900 may include: a cell module 910, the cell module including at least a group of cells arranged in sequence; a battery tray 920 for carrying the cell module, the battery tray using module tray frames connected in parallel as a frame, each module tray frame and the cell module fixed therein forming a cell module-tray frame unit; and a battery pack cover 930.

[0068] It is understood that the detailed descriptions of the cell module 910, battery tray 920, and battery pack cover 930 above can be found in Figure 2 above. Figure 7 The specific steps in the embodiments will not be repeated here.

[0069] Figure 10 A block diagram of an example battery pack integration system 1000 according to an embodiment of this specification is shown. This battery pack integration system embodiment can be compared with Figure 2- Figure 7 The method embodiments shown correspond to each other and can be specifically applied to various electronic devices.

[0070] like Figure 10 As shown, the battery pack integration system 1000 may include a controller 1010, a cell module assembler 1020, a tray assembler 1030, and a battery pack integrator 1040.

[0071] The controller 1010 is configured to: control the cell module assembler 1020 to fix the cell modules to the module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a group of cells arranged in sequence; control the tray assembler 1030 to connect several groups of cell module-tray frame units in parallel, thereby forming a battery tray frame through the parallel connection of the module tray frames, for assembling the battery tray; and control the battery pack integrator 1040 to assemble an integrated battery pack based on the battery tray and several cell modules fixed therein.

[0072] It is understood that the specific operations of the controller 1010 controlling the cell module assembler 1020, the tray assembler 1030, and the battery pack integrator 1040 can be referred to the aforementioned Figure 2- Figure 7 The specific steps in the embodiments will not be repeated here.

[0073] In some examples, the controller 1010 can perform the above steps by reading the corresponding computer program instructions from the memory of its device into memory and running them.

[0074] In some embodiments, computer-executable instructions may be stored in a memory, which, when executed, cause the controller 1010 to: control the cell module assembler 1020 to fix cell modules to a module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a group of cells arranged in sequence; control the tray assembler 1030 to connect several groups of cell module-tray frame units in parallel, thereby forming a battery tray frame through the parallel-connected module tray frames to assemble the battery tray; and control the battery pack integrator 1040 to assemble an integrated battery pack based on the battery tray and several cell modules fixed therein.

[0075] It should be understood that the computer-executable instructions stored in the memory, when executed, cause the controller 1010 to perform the above-described combinations in the various embodiments of this specification. Figures 1-7 The description includes various operations and functions.

[0076] use Figure 10 The battery pack integration system disclosed herein uses a controller to control the corresponding cell module assembler, tray assembler, and battery pack integrator to directly install the cell modules onto the module tray frame, which is part of the battery tray. Then, the cell module-tray frame unit with the cell modules installed is connected as a whole. This allows part of the enclosure to be installed during the cell assembly process, enabling cell assembly and enclosure installation to be carried out simultaneously without the need for separate assembly of enclosure and cell assembly. This provides a novel CTP battery pack integration solution that is significantly different from other CTP methods.

[0077] Reference above Figures 1 to 10 This specification describes embodiments of a battery pack integration method, apparatus, system, and battery pack according to examples of the present specification.

[0078] According to one embodiment, a computer-readable storage medium is provided, for example. The computer-readable storage medium can store executable instructions (i.e., the elements implemented in software as described above), which, when executed by a computer, cause the computer to perform the above-described combinations of the various embodiments of this specification. Figures 1-7 The description includes various operations and functions.

[0079] Specifically, a system or apparatus equipped with a readable storage medium may be provided, on which software program code implementing the functions of any of the embodiments described above is stored, and the computer or processor of the system or apparatus can read and execute the instructions stored in the readable storage medium.

[0080] In this case, the program code itself, which can be read from a readable medium, can perform the functions of any of the above embodiments. Therefore, the machine-readable code and the readable storage medium storing the machine-readable code constitute a part of the present invention.

[0081] The computer program code required for the operation of each part of this manual can be written in any one or more programming languages, including object-oriented programming languages ​​such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB, .NET, and Python; conventional procedural programming languages ​​such as C, Visual Basic 2003, Perl, COBOL 2002, PHP, and ABAP; dynamic programming languages ​​such as Python, Ruby, and Groovy; or other programming languages. This program code can run on the user's computer, or as a standalone software package on the user's computer, or partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer via any network, such as a local area network (LAN) or wide area network (WAN), or connected to an external computer (e.g., via the Internet), or in a cloud computing environment, or used as a service, such as Software as a Service (SaaS).

[0082] Examples of readable storage media include floppy disks, hard disks, magneto-optical disks, optical disks (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD-RW), magnetic tapes, non-volatile memory cards, and ROMs. Alternatively, program code can be downloaded from a server computer or the cloud via a communication network.

[0083] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0084] Not all steps and units in the above process and system structure diagrams are mandatory; some steps or units can be omitted as needed. The execution order of each step is not fixed and can be determined as required. The device structure described in the above embodiments can be a physical structure or a logical structure. That is, some units may be implemented by the same physical entity, or some units may be implemented by multiple physical entities, or they may be jointly implemented by certain components in multiple independent devices.

[0085] The term "exemplary" as used throughout this specification means "serving as an example, instance, or illustration" and does not imply that it is "preferred" or "advantageous" over other embodiments. Detailed descriptions are included for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these detailed descriptions. In some instances, well-known structures and apparatuses are shown in block diagram form to avoid obscuring the concepts of the described embodiments.

[0086] The optional embodiments of the present specification have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present specification are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present specification, various simple modifications can be made to the technical solutions of the embodiments of the present specification, and these simple modifications all fall within the protection scope of the embodiments of the present specification.

[0087] The foregoing description of this specification is provided to enable any person skilled in the art to implement or use the content of this specification. Various modifications to the content of this specification will be apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of protection of this specification. Therefore, this specification is not limited to the examples and designs described herein, but is consistent with the widest scope of the principles and novel features disclosed herein.

Claims

1. A battery pack integration method, comprising: The cell module is fixedly connected to the module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a group of cells arranged in sequence; Several sets of cell module-tray frame units are connected in parallel, thereby forming a battery tray frame from the parallel-connected module tray frames, for assembling the battery tray; and An integrated battery pack is assembled based on the battery tray and several cell modules already fixed therein.

2. The battery pack integration method as described in claim 1, wherein, Before the cell module is fixedly attached to the module tray frame to form a cell module-tray frame unit, the battery pack integration method further includes: An end plate is fixedly connected between two parallel elongated components and near one end of one of the elongated components to form the module tray frame, wherein the two elongated components and the end plate form a cavity for accommodating the cell module.

3. The battery pack integration method as described in claim 2, wherein, The battery cells in the battery cell module are arranged sequentially along the width or thickness direction. The step of fixing the battery cell module to the module tray frame to form a battery cell module-tray frame unit includes: The arrangement direction of the battery cells is aligned with the extension direction of the elongated assembly; The battery cell located at one end of the battery cell module is pressed against the end plate; and The battery cell module is attached to the module tray frame.

4. The battery pack integration method as described in claim 3, wherein, The electrodes of the battery cell are located on the side of the battery cell module along the battery cell arrangement direction. The process of fixing the battery cell module to the module tray frame to form a battery cell module-tray frame unit further includes: The busbar is soldered to the electrodes located on the side of the cell module; and The integrated busbar CCS is installed onto the cell module on which the busbar is welded to form a cell module-tray frame unit.

5. The battery pack integration method as described in claim 2, wherein, The method of connecting several groups of cell modules-tray frame units in parallel includes: Several groups of cell modules-tray frame units are connected in parallel with the long strip component as the docking reference.

6. The battery pack integration method as described in claim 5, wherein, The parallel connection between the elongated components of different cell modules-tray frame units is achieved by friction stir welding.

7. The battery pack integration method as described in claim 5, wherein, The battery tray is assembled through the following steps: The outer frame beams are welded to the outermost elongated assembly of the parallel-connected modular tray frame to provide lateral protection; and Using the elongated component as the longitudinal beam of the battery tray, front and rear tray frames are welded to both ends of the elongated component to form the battery tray.

8. A battery pack integration device, comprising: A cell module assembler is configured to fix cell modules to a module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a set of cells arranged in sequence. A tray assembler is configured to connect several groups of cell module-tray frame units in parallel, thereby forming a battery tray frame through the parallel-connected module tray frames, for assembling the battery tray; and A battery pack integrator is configured to assemble an integrated battery pack based on the battery tray and several cell modules already fixed therein.

9. A battery pack, manufactured according to the battery pack integration method as described in any one of claims 1 to 7, comprising: A battery cell module, wherein the battery cell module comprises at least a group of battery cells arranged in sequence; A battery tray for supporting the battery cell modules, wherein the battery tray uses parallel-connected module tray frames as a frame, and each module tray frame and the battery cell modules fixed therein form a battery cell module-tray frame unit; and Battery pack cover.

10. A battery pack integration system, comprising a controller, a cell module assembler, a tray assembler, and a battery pack integrator, wherein, The controller is configured to: The cell module assembler is controlled to fix the cell module to the module tray frame to form a cell module-tray frame unit, wherein the cell module includes at least a group of cells arranged in sequence; The tray assembler controls the parallel connection of several groups of cell module-tray frame units, thereby forming a battery tray frame from the parallel-connected module tray frames, for assembling the battery tray; and The battery pack integrator is controlled to assemble the integrated battery pack based on the battery tray and several cell modules already fixed therein.

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