An output stage base and battery pack

Abstract

The utility model provides a kind of output stage base and battery pack, it is related to battery technical field, the output stage base includes integrated base and integrated upper cover: integrated base contains base body and high-voltage connecting portion and low-voltage connecting portion on it, base body is detachably fixed in battery box crossbeam top surface, high-voltage connecting portion is used to fixed high-voltage conducting row, and low-voltage connecting portion is used to fixed CCS low-voltage connector. Integrated upper cover is detachably connected with base, and jointly enclose and form high-voltage shielding cavity and low-voltage shielding cavity respectively containing high-voltage conducting row and CCS low-voltage connector.The utility model integrates high and low voltage connection function in single base, and is equipped with independent shielding cavity upper cover, realizes compact structure, saves installation space, and significantly improves the reliability and anti-interference ability of system by physical isolation and electromagnetic shielding.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an output stage base and battery pack. Background Technology

[0002] In the battery pack structure design, the output stage base is a key component. Its main function is to fix the busbar of the battery cell or module and to achieve a reliable bolt connection with the external high voltage conductor, thereby ensuring the structural stability and connection reliability of the high voltage electrical path and preventing loosening caused by vibration or impact.

[0003] However, with the widespread adoption of fast charging technologies for electric vehicles (such as 4C rate), the requirements for electrical isolation and electromagnetic interference immunity between high- and low-voltage components within the battery pack are becoming increasingly stringent. Current designs typically require a separate CCS (Battery Management System) component and its low-voltage connectors, in addition to the output stage base responsible for high-voltage connections. To meet the safety distance and interference immunity requirements between high and low-voltage signals, the low-voltage connectors often need to maintain a significant installation distance from the output stage base. While this separate installation of the output stage base and the CCS low-voltage connectors achieves basic functional isolation, it also introduces significant spatial layout problems. The two components occupy separate installation positions along the Y-axis (usually the thickness direction of the battery pack) within the battery pack, resulting in a loose structure, large space occupancy, and hindering the compact arrangement of wiring harnesses within the battery pack. Utility Model Content

[0004] In view of this, the present invention proposes an output stage base and battery pack to solve the problems of large space occupation, loose structure and weak anti-battery interference caused by the separate installation of the output stage base and CCS connector in the prior art.

[0005] The technical solution of this utility model is implemented as follows: In a first aspect, this utility model provides an output stage base, comprising: An integrated base includes a base body, and a high-voltage connection part and a low-voltage connection part disposed on the base body. The base body is used to be detachably fixed to the top surface of the crossbeam of the battery box. The high-voltage connection part is used to fix the high-voltage conductor bar, and the low-voltage connection part is used to fix the CCS low-voltage connector. An integrated top cover is detachably connected to the integrated base, and together with the integrated base, they enclose a high-voltage shielding cavity for accommodating the high-voltage busbar and a low-voltage shielding cavity for accommodating the CCS low-voltage connector.

[0006] Based on the above technical solution, preferably, the high-voltage connection part and the low-voltage connection part are spaced apart along the length direction of the base body.

[0007] Based on the above technical solution, preferably, the high-voltage connection part includes a first mounting surface disposed on the base body for supporting the high-voltage conductive busbar, and the first mounting surface is provided with a threaded connection structure.

[0008] Based on the above technical solution, preferably, the threaded connection structure is an insert nut embedded in the first mounting surface.

[0009] Based on the above technical solution, preferably, the low-pressure connection part includes a second mounting surface disposed on the base body for supporting the CCS low-pressure connector, and the second mounting surface is provided with a connection hole for connecting the CCS low-pressure connector by fasteners.

[0010] Based on the above technical solution, preferably, the base body has fixing holes at both ends along its length direction for detachable and fixed connection with the top surface of the crossbeam by bolts.

[0011] Based on the above technical solution, preferably, the bottom surface of the base body is provided with a buckle for engaging with the snap-fit ​​hole on the top surface of the crossbeam.

[0012] Based on the above technical solution, preferably, an isolation structure is provided between the high-voltage shielding cavity and the low-voltage shielding cavity.

[0013] Secondly, this utility model provides a battery pack, including a battery housing, multiple individual battery cells, a signal acquisition component, and an output stage base as described in the first aspect. A crossbeam is provided inside the battery housing; the output stage base is fixedly disposed on the top surface of the crossbeam; multiple individual battery cells are disposed inside the battery housing, and their electrodes are electrically connected to a high-voltage conductor fixed on a high-voltage connection part through a busbar; the acquisition end of the signal acquisition component is connected to the individual battery cells, and its output end is output through a CCS low-voltage connector fixed on a low-voltage connection part.

[0014] Based on the above technical solution, preferably, two output stage bases are fixedly arranged at intervals along the length direction on the top surface of the crossbeam, and the two output stage bases are arranged symmetrically.

[0015] The present invention has the following advantages over the prior art: (1) By integrating the high voltage connection function, low voltage connection function and installation foundation into a base body and equipping it with a top cover with an independent shielding cavity, the structure is compact and installation space is saved; in terms of function, physical isolation and electromagnetic shielding of high and low voltage circuits are achieved, which significantly enhances the reliability and anti-interference ability of the system.

[0016] (2) The base body is connected to the top surface of the crossbeam by bolts at both ends along the length of the base body. The bottom of the base body is connected to the crossbeam by buckles and buckle holes. This combination of bolts and buckles forms a comprehensive constraint on the base body in multiple degrees of freedom in space. In particular, it greatly enhances the torsional stiffness of the base against torsion around the X-axis and Z-axis, making the whole structure more stable.

[0017] (3) The output stage base is installed as a highly integrated functional module, fixedly mounted on the top surface of the crossbeam. This installation strategy positions the output stage base in a critical electrical area inside the battery pack. The principle is to utilize the crossbeam as a robust mechanical foundation, providing a stable and elevated mounting platform for the output stage base. This layout concentrates all external high-voltage outputs and low-voltage signal interfaces in an easily manageable and maintainable location, greatly optimizing the internal space utilization and piping layout of the battery pack.

[0018] (4) The battery pack in this embodiment adopts a highly integrated output stage base and systematically integrates it with the battery box, cells, busbars and signal acquisition components, successfully modularizing the traditionally distributed high-voltage output, low-voltage signal interfaces and their shielding structures. This not only significantly saves internal space and simplifies the assembly process, but also fundamentally improves the electrical safety and anti-interference performance of the battery pack through high and low voltage isolation and shielding design, achieving a balance between structural compactness, manufacturing efficiency and operational reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the output stage base disclosed in an embodiment of the present utility model; Figure 2 This is an exploded first-view view of the output stage base disclosed in an embodiment of the present utility model; Figure 3 This is an exploded view of the output stage base disclosed in an embodiment of the present utility model from a second perspective; Figure 4 This is a three-dimensional schematic diagram of the assembly structure of the output stage base, high voltage busbar, and CCS low voltage connector disclosed in an embodiment of the present utility model. Figure 5This is a plan view of the assembly structure of the output stage base, high voltage busbar, and CCS low voltage connector disclosed in an embodiment of the present utility model. Figure 6 for Figure 5 Planar sectional view at point AA; Figure 7 This is a three-dimensional structural diagram of the battery pack disclosed in an embodiment of the present utility model; Figure 8 This is a schematic diagram of the battery box structure disclosed in an embodiment of the present utility model; Figure label: 1. Integrated base; 11. Base body; 111. Fixing hole; 112. Buckle; 12. High voltage connection part; 121. First mounting surface; 122. Threaded connection structure; 13. Low voltage connection part; 131. Second mounting surface; 132. Connection hole; 2. High voltage conductor busbar; 8. CCS low voltage connector; 3. Integrated top cover; 31. High voltage shielding cavity; 32. Low voltage shielding cavity; 30. Isolation structure; 4. Battery box; 41. Crossbeam; 411. Snap-fit ​​hole; 5. Individual battery cell; 6. Signal acquisition component; 7. Busbar. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0028] like Figure 1 As shown, combined with Figure 2-8The first embodiment of this utility model discloses an output stage base, comprising two main components: an integrated base 1 and an integrated top cover 3. The integrated base 1 forms the mounting foundation for the entire component, and includes a base body 11, as well as a high-voltage connection part 12 and a low-voltage connection part 13 integrally disposed on the base body 11. One of the core functions of the base body 11 is to serve as the mounting base for the entire structure, enabling a detachable and fixed connection with the top surface of the crossbeam 41 of the battery housing 4. This design allows the output stage base to be installed onto the battery housing 4 as a complete module in one go, greatly simplifying the assembly process.

[0029] The main function of the high-voltage connection part 12 is to fix the high-voltage busbar 2. Its principle is to provide a stable and reliable mechanical connection point and electrical interface for the high-voltage and high-current path. By integrating the high-voltage connection part 12 onto the base body 11, the positional stability of the high-voltage busbar 2 under conditions such as vibration is ensured, preventing poor contact or arcing risks caused by loosening.

[0030] The main function of the low-voltage connection part 13 is to fix the CCS low-voltage connector 8. Its principle is to provide an independent and stable installation position for the signal acquisition line (usually low voltage) of the battery management system. Integrating the low-voltage connection part 13 and the high-voltage connection part 12 together on the base body 11 is the key to achieving structural integration. It fundamentally changes the traditional split installation mode that requires finding installation positions separately.

[0031] The integrated top cover 3 and the integrated base 1 are detachably connected to form a complete protective shell. Specifically, the integrated top cover 3 and the integrated base 1 can be connected by snaps or bolts. When the top cover and the base are combined, they together form a high-voltage shielding cavity 31 and a low-voltage shielding cavity 32. The high-voltage shielding cavity 31 is used to accommodate and shield the high-voltage busbar 2 and its connection points. Through physical isolation and the design of the metal shielding layer, the electromagnetic field that may be generated by the high-voltage circuit is constrained from radiating outward.

[0032] Accordingly, the low-voltage shielding cavity 32 is used to house and shield the CCS low-voltage connector 8. This serves two purposes: firstly, it protects the low-voltage connector from physical damage; secondly, it prevents external electromagnetic interference from affecting sensitive battery management signals through spatial coupling, and also prevents interference from high-voltage circuits from entering the low-voltage system. This high-low voltage isolation shielding design is key to improving the overall battery pack's electromagnetic interference (EMI) immunity.

[0033] This embodiment integrates high-voltage connection function, low-voltage connection function and installation foundation into a base body 11, and is equipped with a top cover with an independent shielding cavity, which achieves compact structure and saves installation space; functionally, it achieves physical isolation and electromagnetic shielding of high and low voltage circuits, significantly enhancing the system's reliability and anti-interference capability.

[0034] In some embodiments, the high-voltage connection 12 and the low-voltage connection 13 are spaced apart along the length of the base body 11. This makes full use of the linear space of the base body 11 in the length direction, and the two connection parts with different functions are arranged side by side. This horizontally spaced arrangement allows the base body 11 to make full use of the space in the X direction of the battery pack (that is, the thickness of the individual cell 5) after it is fixed to the top surface of the crossbeam 41 in the length direction.

[0035] In some embodiments, refer to the appendix Figure 2 , 4 As shown in Figure 6, the high-voltage connection part 12 includes a first mounting surface 121 disposed on the base body 11 for supporting the high-voltage conductive busbar 2, and the first mounting surface 121 is provided with a threaded connection structure 122.

[0036] The first mounting surface 121 is located on the top surface of the base body 11, providing a stable and reliable mounting reference plane for the high-voltage busbar 2. This plane ensures that the high-voltage busbar 2 can be pressed and fixed with a large-area contact. The threaded connection structure 122 on the first mounting surface 121 is key to achieving the detachable connection of the high-voltage busbar 2. Its working principle is to utilize the self-locking property of the thread and the precisely controllable preload to firmly press the high-voltage busbar 2 onto the first mounting surface 121 with bolts. Compared with permanent connection methods such as welding, the threaded connection structure 122 allows for convenient disassembly and reinstallation of the high-voltage busbar 2 during maintenance or inspection, greatly improving the maintainability of the product.

[0037] In some embodiments, the threaded connection structure 122 is an insert nut embedded in the first mounting surface 121. Specifically, the insert nut and the base body 11 are molded as one piece by a metal insert injection molding process, so that the insert nut is firmly fixed in the base body 11, and the high strength of the metal part itself is used to withstand the high preload generated when the bolt is tightened, and to provide a durable and stable threaded interface for repeated tightening and loosening of bolts.

[0038] The use of insert nuts has several important functions. First, it effectively solves the inherent defect of insufficient thread strength when directly machining threads on non-metallic materials (such as plastics). If threads are directly tapped on the plastic base body 11, the thread strength is low, and it is very easy to strip the threads and fail under repeated disassembly and assembly or when subjected to large torques. Insert nuts, on the other hand, bear all the mechanical loads on their metal bodies, thus ensuring the long-term reliability and sufficient mechanical strength of the connection point.

[0039] In some embodiments, the low-voltage connection portion 13 includes a second mounting surface 131 disposed on the base body 11 for supporting the CCS low-voltage connector 8, and the second mounting surface 131 is provided with a connection hole 132 for connecting the CCS low-voltage connector 8 by means of fasteners.

[0040] The second mounting surface 131 provides a flat mounting and positioning reference for the CCS low-voltage connector 8, ensuring accurate and stable positioning and support of the connector and preventing loosening or damage due to suspension or uneven force. The connection hole 132 on the second mounting surface 131 is crucial for the mechanical fixing of the CCS low-voltage connector 8. Its working principle is to provide a precise channel allowing fasteners (such as screws, rivets, etc.) to pass through the hole and securely fasten the connector to the second mounting surface 131. This mechanical fastener connection method, compared to simple plug-in or snap-fit ​​fixing, offers higher connection reliability and resistance to vibration and impact, effectively coping with harsh operating conditions during vehicle operation, preventing signal connectors from loosening due to vibration, and ensuring the continuous and stable signal transmission of the battery management system.

[0041] In some embodiments, the base body 11 has fixing holes 111 at both ends along its length for detachable fixing to the top surface of the crossbeam 41 by bolts. By passing bolts through these fixing holes 111 and engaging with threaded structures (such as insert nuts or threaded holes) on the top surface of the crossbeam 41, a large locking force can be generated, firmly pressing the base body 11 onto the top surface of the crossbeam 41. This connection method utilizes the reliability and detachability of bolted connections, ensuring that the base will not loosen from the housing when facing complex operating conditions such as vibration and impact during vehicle operation, providing an extremely stable mounting platform for the high and low pressure components integrated thereon.

[0042] In some embodiments, refer to the appendix Figure 3 and 8 As shown, the bottom surface of the base body 11 is provided with a buckle 112 for engaging with the snap-fit ​​hole 411 on the top surface of the crossbeam 41 of the battery box 4.

[0043] Specifically, the latch 112 is an elastic latching structure located at the bottom of the base body 11. Its core principle is to utilize the elastic deformation and recovery characteristics of the material itself. During installation, when the base body 11 is placed on top of the crossbeam 41 and pressed down, the guide slope of the latch 112 will first contact the side wall of the crossbeam 41 and undergo elastic deformation until the latch head of the latch 112 aligns with the latching hole 411 on the side wall of the crossbeam 41. Under the action of elastic recovery force, the latch 112 quickly springs into the latching hole 411 and forms a hook with it, thereby completing the locking.

[0044] The main function of this clip 112 structure is to effectively constrain the base body 11 in the Y direction (usually the width direction of the battery pack). The bolts at both ends mainly provide clamping force in the Z direction (vertical direction) and constraint in the X direction (length direction), while the clip 112 at the bottom precisely compensates for the lack of constraint in the Y direction. Through this combination of "bolt + clip" fixing method, comprehensive constraint is formed on the base body 11 in multiple degrees of freedom in space, especially greatly enhancing the torsional stiffness of the base against torsion around the X and Z axes, making the entire structure more stable.

[0045] From an assembly process perspective, it achieves the functions of preliminary positioning and rapid pre-fixation. Before tightening the bolts at both ends, the operator can first pre-fix the base body 11 to the crossbeam 41 using the clips 112. This avoids the need to simultaneously exert effort to align and hold the entire base when tightening the bolts, and also prevents accidental movement of the base before final tightening, making single-person operation possible and significantly improving the convenience of assembly and production efficiency.

[0046] In some embodiments, an isolation structure 30 is provided between the high-voltage shielding cavity 31 and the low-voltage shielding cavity 32.

[0047] The isolation structure 30 is a physical barrier located between the high-voltage shielding cavity 31 and the low-voltage shielding cavity 32. Its core principle is to construct a clear and continuous electromagnetic isolation zone to block and guide the propagation path of electromagnetic interference. During charging and discharging, the high-voltage circuit generates drastically changing currents, forming a strong high-frequency electromagnetic field. Without effective isolation, this electromagnetic field can interfere with the nearby CCS low-voltage connector 8 and the signal acquisition circuit of the connected battery management system through spatial coupling or conduction, causing signal distortion and false alarms, severely affecting the accuracy and safety of battery management.

[0048] In this embodiment, the isolation structure 30 can be a physical partition or shielding material, etc. It achieves near-field shielding between high-voltage and low-voltage circuits. The isolation structure 30 itself is usually made of metal or has a metal shielding layer on its surface, which can effectively reflect and absorb high-frequency electromagnetic waves, significantly attenuating the electromagnetic energy radiated from the high-voltage shielding cavity 31 to the low-voltage shielding cavity 32, providing a "quiet" working environment for the low-voltage signal lines. Secondly, this structure also increases the creepage distance and electrical clearance. Setting a physical barrier between the high-voltage conductor and the low-voltage conductor can prevent the risk of short circuits between high and low voltages that may be caused by dust accumulation, condensation, or accidental contact of conductive foreign objects, further improving the electrical safety level of the system.

[0049] In addition, the isolation structure 30 also acts as an internal reinforcing rib connecting the integrated top cover 3 and the integrated base 1. It enhances the structural rigidity and integrity of the entire output stage base assembly, enabling it to better resist vibration and impact, and prevent the shielding cavity from deforming due to external forces, thereby ensuring the long-term stability of shielding performance.

[0050] Another embodiment of this utility model provides a battery pack, as shown in the attached drawing. Figure 7 and 8 As shown, the battery includes a battery housing 4, multiple individual battery cells 5, a signal acquisition component 6, and an output stage base as described in the first aspect. A crossbeam 41 is provided inside the battery housing 4. The output stage base is fixedly disposed on the top surface of the crossbeam 41. Multiple individual battery cells 5 are disposed inside the battery housing 4, and their electrodes are electrically connected to a high-voltage conductor 2 fixed on a high-voltage connection part 12 via a busbar. The acquisition end of the signal acquisition component 6 is connected to the individual battery cells 5, and its output end is output through a CCS low-voltage connector 8 fixed on a low-voltage connection part 13.

[0051] The output stage base is installed as a highly integrated functional module, fixedly mounted on the top surface of the crossbeam 41. This installation strategy positions the output stage base in a critical electrical area within the battery pack. The principle is to utilize the crossbeam 41 as a robust mechanical foundation, providing a stable and elevated mounting platform for the output stage base. This layout concentrates all external high-voltage outputs and low-voltage signal interfaces in an easily manageable and maintainable location, significantly optimizing internal space utilization and piping layout within the battery pack.

[0052] Multiple individual battery cells 5 are the energy storage units of the battery pack, arranged in an array within the battery housing 4. The collection and output of electrical energy are achieved through the following path: the electrodes of each individual battery cell 5 are connected in parallel or series via a busbar 7, and finally, the electrode output terminals of the busbar 7 are electrically connected to the high-voltage busbar 2. This high-voltage busbar 2 is fixed to the high-voltage connection portion 12 of the output stage base, thereby establishing a high-voltage energy output channel from the inside of the battery cell to the outside of the battery pack. This design ensures the structural stability and connection reliability of the high-voltage, high-current path.

[0053] The signal acquisition component 6 (e.g., a flexible printed circuit board (FPC) or wiring harness) is responsible for real-time monitoring of key parameters such as voltage and temperature of each individual cell 5. Its acquisition end is connected to the corresponding monitoring point of each individual cell 5 via sampling lines. The acquired signals are transmitted to its output end through the internal circuitry of the signal acquisition component 6. This output end is ultimately centralized and output to the battery management system (BMS) via the CCS low-voltage connector 8 fixed to the low-voltage connection part 13 of the output stage base. This design consolidates the dispersed signal acquisition lines into a reliable, shielded, standardized interface, ensuring the stability and anti-interference capability of signal transmission.

[0054] In this embodiment, two output stage bases are provided on the crossbeam 41, and the two output stage bases are arranged symmetrically. Thus, the high-voltage connection portion of one output stage base is dedicated to fixing the high-voltage input terminal conductor, while the other is dedicated to fixing the high-voltage output terminal conductor. The low-voltage connection portions on the two output stage bases follow the principle of functional correspondence and zonal management: each low-voltage connection portion is dedicated to fixing the connector to the signal acquisition component of its corresponding battery area, thereby dividing the signal path for monitoring the voltage and temperature of a large number of battery cells into two independent channels.

[0055] The battery pack in this embodiment utilizes the aforementioned highly integrated output stage base, systematically integrating it with the battery housing 4, battery cells, busbar 7, and signal acquisition component 6. This successfully modularizes the traditionally dispersed high-voltage output, low-voltage signal interfaces, and their shielding structures. This not only significantly saves internal space and simplifies the assembly process, but also fundamentally improves the electrical safety and anti-interference performance of the battery pack through high- and low-voltage isolation and shielding design, achieving a balance between structural compactness, manufacturing efficiency, and operational reliability.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An output stage base, characterized in that, include: An integrated base (1) includes a base body (11) and a high-voltage connection part (12) and a low-voltage connection part (13) disposed on the base body (11). The base body (11) is used to be detachably fixedly connected to the top surface of the crossbeam (41) of the battery box (4). The high-voltage connection part (12) is used to fix the high-voltage conductor (2), and the low-voltage connection part (13) is used to fix the CCS low-voltage connector (8). The integrated top cover (3) is detachably connected to the integrated base (1) and together with the integrated base (1) forms a high-voltage shielding cavity (31) for accommodating the high-voltage busbar (2) and a low-voltage shielding cavity (32) for accommodating the CCS low-voltage connector (8).

2. The output stage base as described in claim 1, characterized in that: The high-voltage connection part (12) and the low-voltage connection part (13) are spaced apart along the length direction of the base body (11).

3. The output stage base as described in claim 2, characterized in that: The high-voltage connection part (12) includes a first mounting surface (121) disposed on the base body (11) for supporting the high-voltage conductive bus (2), and the first mounting surface (121) is provided with a threaded connection structure (122).

4. The output stage base as described in claim 3, characterized in that: The threaded connection structure (122) is an insert nut embedded in the first mounting surface (121).

5. The output stage base as described in claim 2, characterized in that: The low-voltage connection part (13) includes a second mounting surface (131) disposed on the base body (11) for supporting the CCS low-voltage connector (8), and the second mounting surface (131) is provided with a connection hole (132) for connecting the CCS low-voltage connector (8) by fasteners.

6. The output stage base as described in claim 1, characterized in that: The base body (11) has fixing holes (111) at both ends along its length direction, which are used to detachably fix the base body (41) to the top surface of the crossbeam (41) by bolts.

7. The output stage base as described in claim 6, characterized in that: The bottom surface of the base body (11) is provided with a buckle (112) for engaging with the snap-fit ​​hole (411) on the top surface of the crossbeam (41).

8. The output stage base as described in claim 1, characterized in that: An isolation structure (30) is provided between the high-pressure shielding cavity (31) and the low-pressure shielding cavity (32).

9. A battery pack, characterized in that: The battery housing (4), multiple individual battery cells (5), a signal acquisition component (6), and an output stage base as described in any one of claims 1 to 8 are included. A crossbeam (41) is provided inside the battery housing (4). The output stage base is fixedly disposed on the top surface of the crossbeam (41). Multiple individual battery cells (5) are disposed inside the battery housing (4), and their electrodes are electrically connected to a high-voltage conductor (2) fixed on a high-voltage connection part (12) via a busbar. The acquisition end of the signal acquisition component (6) is connected to the individual battery cells (5), and its output end is output through a CCS low-voltage connector (8) fixed on a low-voltage connection part (13).

10. The battery pack as described in claim 9, characterized in that: Two output stage bases are fixedly installed at intervals along the length of the top surface of the crossbeam (41), and the two output stage bases are arranged symmetrically.

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