Module information acquisition assembly and battery pack assembly with module information acquisition assembly

Abstract

The invention relates to the field of battery packs, in particular to a module information acquisition assembly and a battery pack assembly with the module information acquisition assembly. The acquisition mechanism comprises an FPC signal acquisition board and a connecting mechanism; the connecting mechanism comprises a plurality of connecting parts; the FPC signal acquisition board is connected with the corresponding single battery cell through the connecting part; each connecting part comprises a connecting sheet connected to a battery cell pole in the corresponding single battery cell and an FPC (Flexible Printed Circuit) flexible board connector; according to the invention, through the arrangement of the connecting part, the connection between the FPC signal acquisition board and the corresponding single cell is facilitated; according to the invention, through cooperative use of the connecting sheets and the FPC flexible board connectors, connection between the FPC signal acquisition board and the corresponding single cells can be realized; the FPC flexible board connector can be selectively connected to the corresponding single-core battery as required; and various working condition selections are provided.

Description

Technical Field

[0001] The present invention relates to the field of battery packs, and in particular to a module information acquisition assembly and a battery pack assembly having the module information acquisition assembly. Background Art

[0002] The on-board energy storage device is the only energy source for electric vehicles and is the main factor determining the performance of electric vehicles.

[0003] The performance of electric vehicles mainly depends on the physical properties of the battery cells and the battery cell's BMS management system.

[0004] The battery management system currently under development monitors the battery's single cell voltage and cell temperature in real time, balances the cell pressure difference, analyzes the cell temperature rise curve, adjusts the cell management strategy, and improves the cell's working efficiency, so that pure electric vehicles can obtain a better user experience and higher driving performance.

[0005] The existing BMS management system collects and analyzes information such as the voltage and temperature of the battery cells and selects the most suitable management strategy for the battery cells.

[0006] Therefore, key information such as voltage and temperature directly determines whether the choice of management strategy is reasonable. The existing FPC board acquisition method is mostly module, the acquisition system has an integrated structure, and the acquisition circuit board is directly welded on the aluminum bar connecting the positive and negative poles of the battery cell. Once a common situation such as a fuse blows, the signal acquisition cannot be easily repaired. This method is not conducive to the subsequent maintenance and troubleshooting of battery packs, and at the same time limits the application scope and development of the acquisition system, resulting in various good and bad battery cell acquisition systems with low precision, resulting in deviations in the collection data of the battery cell, and also making the after-sales cost of the battery pack high.

[0007] The existing patent CN112757885A - A method for improving the versatility of the connection structure between the middle mounting point of a battery pack and the vehicle body - does not clearly disclose the technical content for solving the above-mentioned problems.

[0008] In order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing battery pack structure. Summary of the invention

[0009] The purpose of the present invention is to provide a split type battery module information collection assembly for collecting information.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] A module information acquisition assembly, comprising an acquisition mechanism; the acquisition mechanism comprises an FPC signal acquisition board and a connecting mechanism;

[0012] The connecting mechanism includes a plurality of connecting parts; the FPC signal acquisition board is connected to the corresponding single cell through the connecting parts;

[0013] The connecting part includes a connecting piece connected to a cell pole in a corresponding single cell and an FPC flexible board connector used to connect the connecting piece to an FPC signal acquisition board.

[0014] The connecting piece is a nickel sheet, which is connected to the aluminum bar on the battery cell pole; the connecting piece is clamped on the FPC flexible board connector.

[0015] The acquisition assembly also includes a protective mechanism; the protective mechanism includes an upper protective plate and a lower protective plate; the FPC signal acquisition board is arranged in the area between the upper protective plate and the lower protective plate.

[0016] The upper guard plate and / or the lower guard plate are provided with protective foam.

[0017] The module information acquisition assembly also includes a signal management system, which includes a signal management chip. The signal management chip is connected to the FPC signal acquisition board via an FPC flexible board connector; the signal management chip is arranged at the end of the corresponding battery module.

[0018] A battery pack assembly comprises a battery pack shell, wherein a battery cell unit is arranged in the battery pack shell, and the battery cell unit comprises a plurality of battery modules, and each battery module is provided with a module information acquisition assembly.

[0019] The battery pack housing includes a battery pack frame, and a liquid cooling structure is provided in the battery pack frame; the battery cell unit is arranged on the liquid cooling structure and fixed on the battery pack frame; the liquid cooling structure includes a liquid cooling plate;

[0020] The liquid cooling plate comprises a flow channel plate; a support plate is provided on the flow channel plate; a flow channel plate body is provided on the flow channel plate, and a cooling flow channel is provided on the flow channel plate body;

[0021] A reinforcing mechanism is provided at one end of the flow channel plate body away from the support plate; the reinforcing mechanism comprises a flow channel groove arranged on the flow channel plate body, and a reinforcing plate is provided in the flow channel groove.

[0022] The battery pack frame includes an external frame, and the external frame includes four external side beams, and the four external side beams are connected in sequence to form a U-shaped distribution;

[0023] Each of the external side beams comprises a side beam body;

[0024] A connector is provided on at least one external side beam in the battery pack housing; the connector is connected to the external side beam via a connecting plate assembly;

[0025] The connecting plate assembly comprises a connecting plate body, on which a rivet nut is arranged; the external side beam is provided with a mounting through hole; and the connector is connected to the external side beam through the connecting plate assembly.

[0026] A nut mounting hole is provided on the connecting plate body, and the rivet nut is connected in the nut mounting hole; a plug-in bolt is provided in the mounting through hole; the plug-in bolt passes through the mounting through hole on the external side beam and is connected to the rivet nut on the connecting plate assembly.

[0027] The connecting plate body is provided with a sealing gasket, the sealing gasket is attached to the connecting plate body, and the connecting plate body is attached to the external side beam through the sealing gasket;

[0028] The rivet nut comprises a nut body, on which a nut head is arranged; the outer diameter of the nut head is larger than the outer diameter of the nut body at the maximum point; the vertical cross-section of the rivet nut is T-shaped; and a sealing layer is arranged at the connection between the nut head and the nut body.

[0029] The advantages of the present invention are:

[0030] The invention discloses a module information acquisition assembly and a battery pack assembly having the module information acquisition assembly.

[0031] The present invention facilitates the connection between the FPC signal acquisition board and the corresponding single battery cell by setting the connecting part.

[0032] The present invention can realize the connection between the FPC signal acquisition board and the corresponding single-cell battery through the coordinated use of the connecting piece and the FPC flexible board connector; and the FPC flexible board connector can be selectively connected to the corresponding single-cell battery as needed; and has a variety of working conditions to choose from.

[0033] At the same time, the connection portion of the present invention also plays a good bridging role, thereby avoiding the problem of inconvenient maintenance when the traditional FPC signal acquisition board is directly welded on the battery cell pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following is a brief description of the contents expressed in the drawings of the present specification and the marks in the drawings:

[0035] Figure 1 It is an axonometric view of the module information acquisition assembly in the present invention.

[0036] Figure 2 It is a top view of the module information acquisition assembly in the present invention.

[0037] Figure 3 It is a schematic diagram of the structure of the battery pack in the present invention.

[0038] Figure 4 It is a structural schematic diagram of a battery pack shell connected to a liquid cooling structure in the present invention.

[0039] Figure 5 It is a schematic diagram of the structure of the battery pack shell without the liquid cooling structure in the present invention.

[0040] Figure 6 It is a structural schematic diagram of the liquid cooling structure in the present invention.

[0041] Figure 7 It is a structural schematic diagram of the track plate in the present invention from the first perspective.

[0042] Figure 8 It is a structural schematic diagram of the track plate in the present invention from a second viewing angle.

[0043] Fig. 9 It is a schematic structural diagram of the external side beam with a connector from the first perspective in the present invention.

[0044] Fig.10 It is a structural schematic diagram of the external side beam with a connector from a second viewing angle in the present invention.

[0045] Fig.11 It is a schematic structural diagram of the external side beam in the present invention.

[0046] Fig.12 It is a structural schematic diagram of the connecting plate assembly in the present invention from a first viewing angle.

[0047] Fig.13 It is a structural schematic diagram of the connecting plate assembly in the present invention from a second viewing angle.

[0048] Fig.14 It is a structural schematic diagram of the connecting plate body in the present invention.

[0049] Fig.15 It is a schematic diagram of the structure of the rivet nut in the present invention.

[0050] The marks in the above figure are:

[0051] 1. Acquisition assembly, 11. Acquisition mechanism, 12. Connection part, 13. FPC signal acquisition board, 14. Protection mechanism. DETAILED DESCRIPTION

[0052] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0053] A module information acquisition assembly 1 includes an acquisition mechanism 11; the acquisition mechanism 11 includes an FPC signal acquisition board 13 and a connecting mechanism; the connecting mechanism includes a plurality of connecting parts 12; the FPC signal acquisition board 13 is connected to a corresponding single battery cell through the connecting part 12; the present invention facilitates the connection between the FPC signal acquisition board 13 and the corresponding single battery cell through the setting of the connecting part 12; the present invention can achieve the connection between the FPC signal acquisition board 13 and the corresponding single battery cell through the coordinated use of a connecting piece 121 and an FPC flexible board connector 122; and the FPC flexible board connector 122 can be selectively connected to the corresponding single-core battery as needed; and has a variety of working conditions to choose from.

[0054] At the same time, the connection portion 12 of the present invention also plays a good bridging role, thereby avoiding the problem of inconvenient maintenance caused by directly welding the traditional FPC signal acquisition board 13 on the battery cell pole.

[0055] At the same time, in the present invention, the connecting part 12 includes a connecting piece 121 connected to the battery cell pole in the corresponding single battery cell and an FPC flexible board connector 122 used to connect the connecting piece 121 with the FPC signal acquisition board 13; the connecting piece 121 of the present invention acts as a connecting piece 121, and the FPC flexible board connector 122 plays a bridging role, facilitating the connection between the connecting piece 121 and the FPC signal acquisition board 13.

[0056] Furthermore, in the present invention, the connecting piece 121 is a nickel sheet, which well ensures the conductivity of the connecting piece 121. In addition, in the present invention, the connecting piece 121 is connected to the aluminum bar on the battery cell pole, which facilitates the electrical connection between the connecting piece 121 and the battery cell pole. At the same time, in the present invention, the connecting piece 121 is clamped on the FPC flexible board connector 122, which facilitates the connection between the connecting piece 121 and the FPC flexible board connector 122.

[0057] Furthermore, the acquisition assembly 1 in the present invention also includes a protective mechanism 14; through the provision of the protective mechanism 14, the present invention can well facilitate the FPC signal acquisition board 13 and reduce the probability of damage to the FPC signal acquisition board 13.

[0058] In the present invention, the protection mechanism 14 includes an upper guard plate 141 and a lower guard plate 142; the FPC signal acquisition board 13 is arranged in the area between the upper guard plate 141 and the lower guard plate 142; such a configuration facilitates the arrangement and placement of the FPC signal acquisition board 13 above the battery module.

[0059] Furthermore, in the present invention, protective foam is provided on the upper guard plate 141 and / or the lower guard plate 142; the protective foam plays a good shock-absorbing and protective role; the protective foam is arranged on the upper guard plate 141 and / or the lower guard plate 142 close to the side of the FPC signal acquisition board 13.

[0060] Furthermore, in the present invention, the module information acquisition assembly 1 also includes a signal management system 15, and the signal management system 15 includes a signal management chip 151, and the signal management chip 151 is connected to the FPC signal acquisition board 13 through the FPC flexible board connector 122; the signal management chip 151 is arranged at the end of the corresponding battery module; the information management system integrates the information management chip, replaces the functions of slave data storage, data analysis, and data interaction in the traditional BMS, is set at the front end of the battery module, optimizes the internal space utilization of the battery pack, and is connected to the FPC signal acquisition board 13 through a flexible FPC connector.

[0061] In addition, the signal management chip 151 of the present invention is arranged at the end of the corresponding battery module; and the connection part 12 is used to realize the connection between the FPC signal acquisition board 13 and the corresponding single battery cell; based on the above design, the use of low-voltage wiring harnesses of the battery pack can be reduced, the accuracy of signal collection is improved, and the space in the box is saved, which provides convenience for subsequent maintenance and inspection, and correspondingly reduces the after-sales cost of the battery pack.

[0062] specific;

[0063] In the present invention, the protective mechanism includes an upper protective plate and a lower protective plate, wherein the lower protective plate is arranged on the upper side of the battery module, and an FPC signal acquisition board is arranged between the upper protective plate and the lower protective plate, and an aluminum bar acquisition point for collecting signals is also arranged.

[0064] The aluminum bar collection point includes a voltage signal collection point and a temperature collection point set on the module pole. The voltage collection point can detect the voltage of the single cell in real time; the temperature collection point can collect the temperature of the module cell in real time; the FPC signal collection board and the aluminum bar collection point are split structures, and the two are connected through a flexible FPC adapter point; the FPC signal collection board is a split structure, and the upper and lower guard plates and the FPC signal collection board 13 and the protective sponge can be disassembled and assembled separately.

[0065] The front end of the FPC signal acquisition board 13 is also provided with an acquisition information recording and analysis system.

[0066] The information collection and analysis chip part and the FPC signal collection board 13 are of a split structure and can be detachably connected.

[0067] The FPC signal acquisition board disclosed in the present invention is provided with an acquisition circuit to transmit voltage and temperature information. The acquisition board is provided with a protection circuit to protect the battery cell from short circuit and reduce the risk of thermal runaway. The board is connected to the aluminum bar signal acquisition point through a flexible FPC board connector.

[0068] The aluminum bar collection points are divided into voltage signal collection points and temperature collection points. The voltage signal collection points and temperature collection points are welded on the aluminum bar connected to the battery cell poles through nickel sheets, and are connected to the FPC signal collection board through a flexible FPC board connector.

[0069] The protection system is provided with an upper guard plate, a lower guard plate and a protection sponge to protect the FPC flexible circuit board, and plays the role of insulation protection and circuit protection.

[0070] The information management system integrates an information management chip, replaces the slave data storage, data analysis, and data interaction functions, is set at the front end of the module, optimizes the internal space utilization of the battery pack, and is connected to the FPC signal acquisition board through a flexible FPC connector.

[0071] The implementation of the present invention reduces the use of low-voltage wiring harnesses, improves the accuracy of signal acquisition, saves space in the box, provides convenience for subsequent maintenance and inspection, and correspondingly reduces the after-sales cost of the battery pack.

[0072] A battery pack assembly includes a battery pack shell 2, wherein a battery cell unit is arranged in the battery pack shell 2, wherein the battery cell unit includes a plurality of battery modules, and each battery module is provided with a module information acquisition assembly 1; through the arrangement of the module information acquisition assembly 1, the present invention can reduce the use of low-voltage wiring harnesses of the battery pack, improve the accuracy of collected signals, save space in the box, provide convenience for subsequent maintenance and inspection, and correspondingly reduce the after-sales cost of the battery pack.

[0073] Furthermore, in the present invention, the battery pack shell 2 includes a battery pack frame 2-1, and a liquid cooling structure is provided in the battery pack frame 2-1; the battery cell unit is arranged on the liquid cooling structure and fixed on the battery pack frame 2-1; the liquid cooling structure includes a liquid cooling plate 24; the present invention facilitates the cooling operation of the battery cell unit during subsequent use through the setting of the liquid cooling structure.

[0074] In the present invention, the liquid cooling plate 24 includes a flow channel plate 241; a support plate 242 is provided on the flow channel plate 241; a flow channel plate body is provided on the flow channel plate 241, and a cooling flow channel is provided on the flow channel plate body; the present invention can optimize the heat dissipation effect of the battery pack through the setting of the liquid cooling structure 1, and the heat generated by the module can be quickly and efficiently taken away by the circulation of the coolant in the liquid cooling plate 24, so that the whole pack can work for a long time.

[0075] In the present invention, the above-mentioned liquid cooling structure 1 is mainly used to cool the battery cell structure in the battery pack. At the same time, the liquid cooling structure 1 disclosed in the present invention can also realize longitudinal support for the battery cell structure to ensure the stability of the arrangement and placement of the battery cell structure.

[0076] In the present invention, the liquid cooling mechanism includes a flow channel plate 241; a support plate 242 is provided on the flow channel plate 241; in the present invention, the flow channel plate 241 is the place where each flow channel is set, and the support plate 242 acts as a covering plate and a support plate 242, the support plate 242 covers the flow channel plate 241, so that the liquid cooling mechanism forms a box structure with a flow channel inside, and the support plate 242 is directly in contact with the battery cell structure later, playing a good supporting and bonding role.

[0077] In the present invention, a flow channel plate body is provided on the flow channel plate 241, and the flow channel plate body is the main structure of the flow channel plate 241, and a cooling flow channel is provided on the flow channel plate body in the present invention; the cooling flow channel is a flow channel for the coolant, which facilitates the circulation of the coolant in the liquid cooling structure 1.

[0078] At the same time, in the present invention, a reinforcing mechanism is provided at one end of the flow channel plate body away from the support plate 242; the structural strength of the liquid cooling plate 24 is ensured by the provision of the reinforcing mechanism.

[0079] At the same time, the reinforcing mechanism described in the present invention includes a flow channel groove 244 arranged on the flow channel plate body, and a reinforcing plate 243 is arranged in the flow channel groove 244; the setting of the flow channel groove 244 can laterally limit the reinforcing plate 243 to ensure the stability of the placement position of the reinforcing plate 243. At the same time, in the present invention, the reinforcing plate 243 is a reinforced plate added to the outside of the liquid cooling plate 24 body, thereby increasing the overall structural strength of the liquid cooling plate 24.

[0080] Furthermore, in the present invention, the battery pack frame 2-1 includes an external frame, and the external frame includes four external side beams, and the four external side beams are connected in sequence to form a U-shaped distribution; in the present invention, the battery pack assembly mainly includes a battery pack shell 22; the battery pack shell 22 is the external protective structure of the battery pack assembly, and the main body is a box body structure; in the present invention, the battery pack shell 22 includes a battery pack frame 2-1, and the battery pack frame 2-1 is the main structure of the battery pack shell 22, and a bottom guard plate 23 is set at the bottom of the battery frame, and a box cover is set at the upper end of the battery frame; at the same time, in the present invention, the battery pack frame 2-1 includes an external frame The external frame includes four external side beams 21, and the four external side beams 21 are connected in sequence to form a U-shaped distribution; in the present invention, the four external side beams 21 are connected in sequence to form a frame structure with a horizontal projection of a U-shaped shape; the external side beams 21 disclosed in the present invention are rolled profiles, and their own structural strength is relatively large, which is beneficial to ensure the overall structural strength of the shell mechanism. At the same time, in the present invention, the sizes of the four external side beams 21 are designed according to needs, and generally, the sizes of two relatively parallel external side beams 21 are consistent; during actual assembly, the shell mechanism can be designed as a cuboid structure or a cube structure; it can be specifically designed according to needs.

[0081] At the same time, in the present invention, each of the external side beams 21 includes a side beam body 2011; the inside of the side beam body is hollow to form a material reduction channel; this makes the external side beam equivalent to an internal hollow box structure, which is beneficial to the overall lightweight of the battery pack.

[0082] Furthermore, in the present invention, a connector 22 is provided on at least one external side beam 21 in the battery pack shell 22; the connector 22 is connected to the external side beam 21 through a connecting plate assembly 202; the connecting plate assembly 202 includes a connecting plate body 2021, and a rivet nut 2022 is provided on the connecting plate body 2021; a mounting through hole is provided on the external side beam 21; the connector 22 is connected to the external side beam 21 through the connecting plate assembly 202; the connecting plate assembly 202 of the present invention acts as a connector and a bridge, which facilitates the installation of the connector 22 on the corresponding external side beam 21.

[0083] In the present invention, a connector 22 is provided on the external side beam 21 at the front and rear ends of the battery pack; in the present invention, the connector 22 is connected to the external side beam 21 through a connecting plate assembly 202; the connecting plate assembly 202 includes a connecting plate body 2021, and a rivet nut 2022 is provided on the connecting plate body 2021; a mounting through hole is provided on the external side beam 21; the connector 22 is connected to the external side beam 21 through the connecting plate assembly 202; the present invention provides a good bridging effect through the setting of the connecting plate assembly 202, which facilitates the connection of the connector 22 to the external side beam 21; at the same time, the present invention can avoid the trouble of directly connecting the connector 22 to the external side beam 21 through the setting of the connecting plate assembly 202.

[0084] In the traditional installation method, the rivet nut 2022 is generally directly connected to the external side beam 21. The rivet nut 2022 is easy to fail or be damaged during the transportation or processing of the shell structure, and the damage of the rivet nut 2022 will affect the installation of the connector 22 on the external side beam 21; however, after the shell structure in the battery pack is welded, due to its large size, larger equipment is required for rework, and the tooling size requirements are high, which means it is not easy to rework.

[0085] Therefore, in the traditional use process, the damaged area of ​​the rivet nut 2022 is mostly sealed by gluing. This operation method will increase the working hours and material costs, resulting in a waste of resources. Moreover, the gluing needs to wait until the glue is solidified before the next step can be carried out, which seriously affects the efficiency of product rework. Moreover, if the reworked glue is unevenly applied or affected by gravity, there will be problems of poor sealing.

[0086] Therefore, in order to solve the above-mentioned problem, the present invention connects the connector 22 and the external side beam 21 through a connecting plate assembly 202. Even when a rivet nut 2022 is damaged, the overall size of the connecting plate assembly 202 is small, which is convenient for rework and maintenance on the machine tool and replacement of a new rivet nut 2022.

[0087] In the present invention, the connecting plate assembly 202 includes a connecting plate body 2021, on which a rivet nut 2022 is provided; the external side beam 21 is provided with a mounting through hole 211; the connector 22 is connected to the external side beam 21 through the connecting plate assembly 202; in the present invention, the connecting plate body 2021 is a flat plate structure, and a nut mounting hole is provided on the connecting plate 113, and the rivet nut 2022 is connected to the nut mounting hole; subsequently, the mounting through hole 211 on the external side beam 21 is passed through the plug-in bolt 201 to connect with the rivet nut 2022 on the connecting plate assembly 202, thereby realizing the connection of the connecting plate assembly 202 on the external side beam 21; at the same time, the connector 22 can also be directly connected to the external side beam 21 through the plug-in bolt 201.

[0088] At the same time, in order to ensure the sealing between the connecting plate assembly 202 and the external side beam 21, a sealing gasket is provided on the connecting plate body 2021 in the present invention, and the sealing gasket is attached to the connecting plate body 2021. The setting of the sealing gasket plays a good connection sealing role, thereby ensuring the sealing between the connecting plate assembly 202 and the external side beam 21.

[0089] At the same time, in the present invention, the rivet nut 2022 includes a nut body 2-1, and a nut head 2-2 is provided on the nut body 2-1; the outer diameter of the nut head 2-2 is larger than the outer diameter of the nut body 2-1 at the maximum point; the vertical cross-section of the rivet nut 2022 is T-shaped; a sealing layer is provided at the connection between the nut head 2-2 and the nut body 2-1; the T-shaped structure of the rivet nut 2022 itself has a limiting function, which ensures the stability of the arrangement of the rivet nut 2022 on the connecting plate body 2021; at the same time, the sealing layer 2-3 is arranged at the connection between the nut head 2-2 and the nut body 2-1, and when the rivet nut 2022 is deformed later, the sealing layer 2-3 can fill the gap between the rivet nut 2022 and the connecting plate body 2021, thereby optimizing the sealing effect; in addition, in the present invention, the nut head 2-2 plays a good blocking and limiting role, thereby avoiding excessive extrusion pressure between the connecting plate body 2021 and the external side beam 21 during subsequent assembly, thereby causing the sealing gasket to lose its elasticity.

[0090] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A module information collection assembly, characterized in that: It includes a collection mechanism; the collection mechanism includes an FPC signal collection board and a connecting mechanism; The connecting mechanism includes a plurality of connecting parts; the FPC signal acquisition board is connected to the corresponding single cell through the connecting parts; The connecting part includes a connecting piece connected to a cell pole in a corresponding single cell and an FPC flexible board connector used to connect the connecting piece to an FPC signal acquisition board.

2. The module information acquisition assembly according to claim 1, characterized in that: The connecting piece is a nickel sheet, which is connected to the aluminum bar on the battery cell pole; the connecting piece is clamped on the FPC flexible board connector.

3. The module information acquisition assembly according to claim 1, characterized in that: The acquisition assembly also includes a protective mechanism; the protective mechanism includes an upper protective plate and a lower protective plate; the FPC signal acquisition board is arranged in the area between the upper protective plate and the lower protective plate.

4. The module information acquisition assembly according to claim 3, characterized in that: The upper guard plate and / or the lower guard plate are provided with protective foam.

5. The module information acquisition assembly according to claim 1, characterized in that: The module information acquisition assembly also includes a signal management system, which includes a signal management chip. The signal management chip is connected to the FPC signal acquisition board via an FPC flexible board connector; the signal management chip is arranged at the end of the corresponding battery module.

6. A battery pack assembly, characterized in that: It comprises a battery pack shell, in which a battery cell unit is arranged, and the battery cell unit comprises a plurality of battery modules, and each battery module is provided with a module information collection assembly as claimed in any one of claims 1 to 5.

7. A battery pack assembly according to claim 6, characterized in that: The battery pack housing includes a battery pack frame, and a liquid cooling structure is provided in the battery pack frame; the battery cell unit is arranged on the liquid cooling structure and fixed on the battery pack frame; the liquid cooling structure includes a liquid cooling plate; The liquid cooling plate comprises a flow channel plate; a support plate is provided on the flow channel plate; a flow channel plate body is provided on the flow channel plate, and a cooling flow channel is provided on the flow channel plate body; A reinforcing mechanism is provided at one end of the flow channel plate body away from the support plate; the reinforcing mechanism comprises a flow channel groove arranged on the flow channel plate body, and a reinforcing plate is provided in the flow channel groove.

8. A battery pack assembly according to claim 7, characterized in that: The battery pack frame includes an external frame, and the external frame includes four external side beams, and the four external side beams are connected in sequence to form a U-shaped distribution; Each of the external side beams comprises a side beam body; A connector is provided on at least one external side beam in the battery pack housing; the connector is connected to the external side beam via a connecting plate assembly; The connecting plate assembly comprises a connecting plate body, on which a rivet nut is arranged; the external side beam is provided with a mounting through hole; and the connector is connected to the external side beam through the connecting plate assembly.

9. A battery pack assembly according to claim 8, characterized in that; A nut mounting hole is provided on the connecting plate body, and the rivet nut is connected in the nut mounting hole; a plug-in bolt is provided in the mounting through hole; the plug-in bolt passes through the mounting through hole on the external side beam and is connected to the rivet nut on the connecting plate assembly.

10. A battery pack assembly according to claim 9, characterized in that; The connecting plate body is provided with a sealing gasket, the sealing gasket is attached to the connecting plate body, and the connecting plate body is attached to the external side beam through the sealing gasket; The rivet nut comprises a nut body, on which a nut head is arranged; the outer diameter of the nut head is larger than the outer diameter of the nut body at the maximum point; the vertical cross-section of the rivet nut is T-shaped; and a sealing layer is arranged at the connection between the nut head and the nut body.

Images