A harvesting assembly, a CCS assembly, and a battery pack

Abstract

The utility model relates to the technical field of battery discloses a collection subassembly, CCS subassembly and battery pack, the collection subassembly includes collection piece, support seat and connector, the collection piece extends along X direction and has the first side surface to multiple battery monomer, the support seat is connected in the one end of collection piece along X direction, and along Z direction convex is located in the first side surface, the support seat includes mounting portion and extension, the recess is provided with the opening to the side of first side surface of mounting portion, the recess's outward side along X direction is provided with the opening, the extension is bent and is connected with mounting portion and extends along X direction to the side away from mounting portion, the extension is opened and is provided with a plurality of through -holes for installing restraint piece, the restraint piece is used for the restraint and connector connection's connecting wire, the connector contains in recess and with collection piece electricity is connected, the application mainly solves how to improve the technical problem of the space utilization rate inside battery pack.

Description

Technical Field

[0001] This utility model relates to the technical field of batteries, and in particular to a data acquisition component, a CCS component, and a battery pack. Background Technology

[0002] To improve capacity and voltage, existing batteries typically consist of multiple individual cells. A data acquisition component is also usually installed on the battery, electrically connected to the terminals of the multiple individual cells to collect voltage or temperature information. This allows for real-time monitoring of the charging and discharging status of the individual cells and detection of their temperature. When a cell's temperature is high, an external cooling module can promptly cool it down, ensuring the battery operates within a preset temperature range. This guarantees battery safety during use, reduces potential safety hazards, and extends battery life.

[0003] Traditional data acquisition components typically include a wire harness isolation plate and flexible printed circuit boards (FPCs) and connectors integrated on the isolation plate. The FPCs, confined within the isolation plate, are electrically connected to the terminals of multiple battery cells via direct or indirect connections to detect the voltage and / or temperature of the cells. Connectors are soldered to the FPCs, allowing multiple conductive lines (including voltage and / or temperature acquisition lines) within the FPCs to connect to the connectors, enabling electrical connection through plugging and unplugging to obtain the voltage and / or temperature information of the battery cells. Specifically, existing connectors, serving as data acquisition ports, are integrated and protrude from the isolation plate, wasting considerable height space and resulting in low space utilization within the battery pack, thus limiting its energy density. Furthermore, the wire harnesses currently used for fixing to the connectors also waste space, further limiting the battery pack's energy density. Utility Model Content

[0004] The purpose of this invention is to provide a data acquisition component, a CCS component, and a battery pack, mainly addressing the technical problem of how to improve the internal space utilization of the battery pack.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A data acquisition component for electrical connection to multiple battery cells, the data acquisition component comprising:

[0007] The collection element extends along a first direction X and has a first side facing the plurality of said battery cells;

[0008] A support base is connected to one end of the acquisition element along the first direction X and protrudes from the first side along the second direction Z. The support base includes a mounting portion and an extension portion. The mounting portion has a groove on the side facing the first side, and an opening is provided on the side of the groove facing outward along the first direction X. The extension portion is bent and connected to the mounting portion and extends away from the mounting portion along the first direction X. The extension portion has multiple through holes for mounting constraint members, which are used to constrain the connecting wires connected to the connector.

[0009] A connector is housed within the groove, clamping it between the support and the acquisition element, and the connector is electrically connected to the acquisition element.

[0010] In one of the technical solutions, the acquisition device is a flexible circuit board, the acquisition device includes a substrate and a connecting plate connected to the substrate, the connecting plate is facing the first side and is arranged parallel to and spaced apart from the substrate, the acquisition component also includes a reinforcing plate, the reinforcing plate is disposed in the gap between the substrate and the connecting plate, and the connector is electrically connected to the connecting plate;

[0011] The mounting portion of the support base has a plurality of rivet posts protruding along the second direction Z. The rivet posts pass through the connecting plate, the reinforcing plate and the base plate in sequence to fix the support base to the acquisition component.

[0012] In one of the technical solutions, at least one support rib is provided on the bottom of the groove along the first direction X, and the connector abuts between the support rib and the connecting plate.

[0013] In one of the technical solutions, at least one reinforcing rib is provided at the connection between the extension and the mounting part, and the supporting rib is connected to the reinforcing rib.

[0014] In one of the technical solutions, the mounting part has at least one buckle protruding on the side away from the rivet post along the second direction Z, and the position of the support seat is positioned by the buckle.

[0015] In one of the technical solutions, the acquisition device further includes a plurality of acquisition plates connected to the substrate. The plurality of acquisition plates are spaced apart along the first direction X and are arranged opposite to each other on both sides of the substrate along the third direction Y. The plurality of acquisition plates are electrically connected to the terminals of the plurality of battery cells one by one through electrical connecting pieces.

[0016] This application also provides a CCS assembly disposed on one side near the terminals of multiple battery cells. The CCS assembly includes an isolation plate, electrical connecting pieces, and multiple acquisition components as described in any of the above technical solutions. The multiple acquisition components are spaced apart along a third direction Y on the isolation plate, and the acquisition elements of the acquisition components are connected to the multiple electrical connecting pieces. The acquisition components are electrically connected to the terminals of the multiple battery cells through the electrical connecting pieces.

[0017] This application also provides a battery pack including the aforementioned CCS component.

[0018] In one of the technical solutions, the battery pack also includes

[0019] The enclosure, including the cavity;

[0020] A crossbeam is provided in the cavity along the third direction Y and divides the cavity into a battery area and an electrical area. The upper end face of the crossbeam is provided with mounting holes.

[0021] At least one battery module, the battery module being composed of a plurality of battery cells arranged in an array, the battery module being disposed within the battery area;

[0022] The CCS component is mounted on the battery module. The acquisition component of the CCS component is electrically connected to the terminals of multiple battery cells via electrical connectors. The support base of the acquisition component is positioned facing the electrical area. The connector inside the support base is electrically connected to the electrical components installed in the electrical area. The buckle of the support base is inserted into the mounting hole so that the support base is detachably connected to the crossbeam.

[0023] In one of the technical solutions, the battery pack further includes multiple constraint members, each of which includes connected studs and cable ties. The studs are respectively connected to the through holes of the support base, and the cable ties are used to bind multiple connecting wires that are respectively connected to the connector and the electrical components.

[0024] Compared with the prior art, the data acquisition component provided by this utility model has at least the following beneficial effects:

[0025] In this solution, the connector within the acquisition component is no longer fixed to the traditional wire harness isolation plate. Instead, a dedicated support base is provided to support the connector. Specifically, the support base is positioned on the side of the acquisition component facing the battery cell, and the connector is fixed within a groove inside the support base. This allows the support base and connector to occupy the excess space below, thus solving the problem of existing connectors protruding upwards relative to the acquisition component and occupying too much space. This, in turn, helps to improve the energy density of the battery pack. Furthermore, the support base in this solution includes an extension. This solution utilizes through holes on the extension to fix the constraint component, so that the connecting wires connected to the connector can be constrained by the constraint component. This eliminates the need for additional constraint components in other locations within the battery pack, further freeing up space within the battery pack and thus further improving the energy density of the battery pack. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the structure of a battery pack provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 This is a schematic diagram of the structure of the acquisition component provided in the embodiments of this application;

[0030] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0031] Figure 5 This is a schematic diagram of the structure of the crossbeam provided in an embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the support base provided in the embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the support base provided in an embodiment of this application from another angle;

[0034] Figure 8 This is a schematic diagram of the structure of the CCS component provided in an embodiment of this application.

[0035] The following are the labeling elements in the figure:

[0036] 1. Enclosure; 11. Battery area; 12. Electrical area; 13. Side beam;

[0037] 2. Crossbeam; 21. Mounting surface; 22. Mounting hole; 3. Battery cell;

[0038] 40. CCS assembly; 4. Acquisition assembly; 41. Acquisition component; 411. Electrical connector; 412. Substrate; 413. Connecting plate; 414. First side surface; 415. Acquisition plate; 42. Connector; 43. Support base; 431. Buckle; 432. Rivet post; 433. Extension; 4331. Through hole; 434. Groove; 435. Support rib; 436. Reinforcing rib; 437. Mounting part; 44. Reinforcing plate;

[0039] 5. Installation space; 6. Connecting wires; 7. Constraints; 71. Studs; 72. Cable ties; 8. Isolation plates. Detailed Implementation

[0040] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0041] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0042] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] 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 application, "multiple" means two or more, unless otherwise explicitly specified.

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0045] Please refer to the following: Figures 1 to 3 and Figure 8 This embodiment provides a battery pack, specifically including a housing 1, a crossbeam 2, at least one battery module, and a CCS assembly 40. The housing 1 has a cavity, and the battery module is composed of multiple battery cells 3 arranged in an array within the cavity. The crossbeam 2 is also located within the cavity and extends along the Y direction perpendicular to the X direction. The crossbeam 2 is used to clamp one end of the battery module along the X direction. The crossbeam 2 divides the cavity within the housing 1 into a battery area 11 and an electrical area 12. The battery area 11 is used to house the battery module, and the electrical area 12 is used to house electrical components, which in this field are mainly battery management systems (BMS). The CCS assembly 40 is mounted on the battery module and is located on one side near the terminals of the multiple battery cells 3. The CCS assembly 40 and the multiple battery cells 3 are electrically connected to obtain detection signals, which are led out in the X direction. When the battery management system establishes an electrical connection with the CCS assembly 40 through the connecting line 6, the battery management system can detect data such as the voltage and / or temperature of the battery cells 3 in real time. Specifically, the BMS can be considered the "brain" of the battery, mainly composed of the CMU (Cell Monitor Unit) and the BMU (Battery Management Unit). The CMU, also known as the cell monitoring unit, is responsible for measuring parameters such as battery voltage, current, and temperature, and also performs functions such as battery equalization. After measuring these data, the CMU transmits them to the BMU. The BMU, the battery management unit, is responsible for evaluating the data transmitted by the CMU. If the data is abnormal, it protects the battery cell 3 by issuing a request to reduce the current or cutting off the charging and discharging path to prevent the battery cell 3 from exceeding its permissible operating conditions. It also manages the charge and temperature of the battery cell 3.

[0046] Please refer to the following: Figures 2 to 6 and Figure 8 The CCS component 40 specifically includes an isolation plate 8, an electrical connection piece 411, and multiple acquisition components 4 spaced apart along the Y direction on the isolation plate 8. The acquisition components 4 specifically include an acquisition element 41, a connector 42, and a support base 43.

[0047] The acquisition element 41 extends along the X direction and can be a structure with multiple wires. To avoid occupying too much space and to improve installation efficiency, the acquisition element 41 in this embodiment is preferably a flexible printed circuit board (FPC) with conductive lines. Multiple electrical connection pieces 411 are connected to the acquisition element 41. These electrical connection pieces 411 can be directly connected to the corresponding terminal of the battery cell 3. To reduce the number of electrical connection pieces 411, they can also be soldered to a busbar. The busbar connects the terminals of two adjacent battery cells 3 simultaneously, thus connecting the two battery cells 3 and achieving the purpose of acquiring detection information from multiple battery cells 3. More specifically, the isolation plate 8 is used to separate the battery cells 3 from the acquisition elements 41 on the multiple acquisition components 4. Let the side of the acquisition element 41 facing the multiple battery cells 3 be the first side surface 414. Then, the isolation plate 8 is equivalent to separating the first side surface 414 of the multiple acquisition elements 41 from the surface of the battery cells 3 except for the terminal, thereby reducing the risk of short circuits in the battery pack.

[0048] The support base 43 is connected to one end of the acquisition element 41 along the X direction and faces the electrical area 12. The support base 43 protrudes downward relative to the first side 414 along the Z direction. The support base 43 includes a mounting part 437 and an extension part 433. The mounting part 437 has a groove 434 on the side facing the first side 414. The groove 434 has an opening on the side facing outward along the X direction. The extension part 433 is bent and connected to the mounting part 437 and extends along the X direction away from the mounting part 437. The extension part 433 has a plurality of through holes 4331 for mounting the constraint member 7. The constraint member 7 is used to constrain the connecting line 6 connected to the connector 42. The connector 42 is housed in the groove 434, which clamps it between the support base 43 and the acquisition element 41. The connector 42 is electrically connected to the acquisition element 41. In other words, the conductive lines on the acquisition element 41 are ultimately integrated and connected to the connector 42 to collect the acquired detection information. This makes the connector 42 a data acquisition port. The BMS mentioned above realizes the function of detecting the temperature and voltage data of each battery cell 3 by electrically connecting to the connector 42 through the connecting line 6.

[0049] Specifically, as described above, the connector 42 in the acquisition component 4 of this solution is no longer fixed to the traditional wire harness isolation plate. This solution specifically sets up a support base 43 for supporting the connector 42, and specifically sets the support base 43 on the side of the acquisition component 41 facing the battery cell 3, and fixes the connector 42 in the groove 434 inside the support base 43, so that the support base 43 and the connector 42 can occupy the extra space below, thereby solving the problem that the existing connector 42 protrudes upward relative to the acquisition component 41 and occupies a lot of space, which is conducive to improving the energy density of the battery pack. In addition, the support base 43 of this solution also includes an extension 433. This solution uses the through hole 4331 on the extension 433 to fix the constraint member 7, so as to constrain the connecting line 6 connected to the connector 42 through the constraint member 7, so that the constraint member 7 does not need to be set in other positions in the battery pack, which is conducive to further freeing up space in the battery pack, and thus further improving the energy density of the battery pack.

[0050] Please refer to the following: Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 The acquisition component 41 includes a base plate 412 and a connecting plate 413 connected to the base plate 412. The connecting plate 413 is positioned parallel to and spaced apart from the base plate 412, facing the first side 414. The acquisition component 4 also includes a reinforcing plate 44, which is disposed in the gap between the base plate 412 and the connecting plate 413. The connector 42 is electrically connected to the connecting plate 413. Multiple rivets 432 protrude along the Z-direction on the mounting portion 437 of the support base 43. The rivets 432 pass sequentially through the connecting plate 413, the reinforcing plate 44, and the base plate 412, so that the support base 43 and the acquisition component 41 are fixedly connected by riveting. This design improves the rigidity of the acquisition component 41 at its end, solving the problem that the acquisition component 41 is easily damaged by pulling when the connecting wire 6 is plugged into and unplugged from the connector 42.

[0051] Please refer to the following: Figure 4 , Figure 6 and Figure 7 At least one support rib 435 protrudes from the bottom of the groove 434 along the X direction. The connector 42 abuts against the support rib 435 and the connecting plate 413. By providing the support rib 435, the structural strength of the mounting part 437 can be improved, ensuring that the mounting part 437 can stably support the connector 42. In addition, at least one reinforcing rib 436 protrudes from the connection between the extension part 433 and the mounting part 437. The support rib 435 is connected to the reinforcing rib 436 to improve the structural strength of the extension part 433, prevent the extension part 433 from easily deforming under stress, and ensure the reliability of the extension part 433 in fixing the constraint member 7.

[0052] Please refer to the following: Figures 2 to 7 The mounting part 437 has at least one buckle 431 protruding from the side away from the rivet 432 along the Z direction. The upper end face of the crossbeam 2 has a mounting hole 22. By engaging the buckle 431 downwards into the mounting hole 22, the entire support base 43 can be detachably mounted on the crossbeam 2. Specifically, the top surface of the crossbeam 2 is a mounting surface 21 for mounting the connector 42. This mounting surface 21 is lower than the top surface of the side beam 13, leaving a mounting space 5 above the mounting surface 21. Both the connector 42 and the support base 43 are accommodated in this mounting space 5. Specifically, this solution utilizes the vertical height difference between the top surfaces of the crossbeam 2 and the side beam 13 as the mounting space 5 for fixing the connector 42 and the support base 43. This not only achieves the function of fixing the connector 42 but also improves the utilization rate of the battery's internal space, making the battery more compliant with the requirements of CTP integration technology, that is, enabling the battery to have the largest possible energy density within a limited space. Furthermore, the structure of fixing the connector 42 to the top of the crossbeam 2 also has the advantages of simple structure and easy assembly and disassembly.

[0053] Please refer to them again. Figures 2 to 7 The mounting hole 22 is preferably along the length direction of the crossbeam 2 (i.e., Figure 5 The buckle 431 extends a short distance along the Y-axis, allowing the buckle 431 to have a 1mm to 2mm range of motion. This allows the connector 42 as a whole to have a 1mm to 2mm range of motion along the Y-axis, thereby eliminating some assembly errors and preventing the data acquisition component 41 from deforming significantly after the support base 43 is fully fixed. This ensures that the data acquisition component 41 can maintain a reliable electrical connection with multiple battery cells 3 in a relatively flat state, thus ensuring the reliability and stability of data acquisition from multiple battery cells 3.

[0054] Please refer to the following: Figures 2 to 4 The acquisition unit 41 specifically includes a substrate 412 and a plurality of acquisition plates 415 connected to the substrate 412. The plurality of acquisition plates 415 are spaced apart along the X direction and are arranged opposite to each other on two sides of the substrate 412 along the Y direction. The plurality of acquisition plates 415 are electrically connected to the terminals of the plurality of battery cells 3 one by one through the aforementioned electrical connection piece 411, wherein the electrical connection piece 411 is usually preferably a nickel sheet.

[0055] Please refer to the following: Figure 2 and Figure 4A constraint member 7 is fixed on the extension 433. The constraint member 7 is used to constrain the connecting wires 6 connected to the connector 42, ensuring that the BMS and the connector 42 maintain a reliable and stable electrical connection. Specifically, the constraint member 7 includes a stud 71 and a cable tie 72 connected together. The stud 71 is connected in the through hole 4331 of the extension 433, so that the entire constraint member 7 is fixed on the extension 433. The cable tie 72 is used to bind multiple connecting wires 6 at the same time to ensure that the BMS and the connector 42 can maintain a reliable and stable electrical connection.

[0056] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A data acquisition component for electrical connection with multiple battery cells (3), characterized in that: The acquisition component (4) includes: The collection element (41) extends along a first direction (X) and has a first side (414) facing the plurality of said battery cells (3). A support base (43) is connected to one end of the acquisition component (41) along the first direction (X) and protrudes from the first side surface (414) along the second direction (Z). The support base (43) includes a mounting part (437) and an extension part (433). The mounting part (437) has a groove (434) on the side facing the first side surface (414), and an opening is provided on the side of the groove (434) facing outward along the first direction (X). The extension part (433) is bent and connected to the mounting part (437) and extends along the first direction (X) away from the mounting part (437). The extension part (433) has a plurality of through holes (4331) for mounting the constraint member (7). The constraint member (7) is used to constrain the connecting line (6) connected to the connector (42). The connector (42) is housed in the groove (434) and clamped between the support base (43) and the collection element (41). The connector (42) is electrically connected to the collection element (41).

2. The acquisition component as described in claim 1, characterized in that: The acquisition component (41) is a flexible circuit board. The acquisition component (41) includes a substrate (412) and a connecting plate (413) connected to the substrate (412). The connecting plate (413) faces the first side (414) and is arranged parallel to and spaced apart from the substrate (412). The acquisition assembly (4) also includes a reinforcing plate (44). The reinforcing plate (44) is disposed in the gap between the substrate (412) and the connecting plate (413). The connector (42) is electrically connected to the connecting plate (413). The mounting portion (437) of the support base (43) is provided with a plurality of rivets (432) protruding along the second direction (Z). The rivets (432) pass through the connecting plate (413), the reinforcing plate (44) and the base plate (412) in sequence, so that the support base (43) is fixedly connected to the collection component (41).

3. The acquisition component as described in claim 2, characterized in that: At least one support rib (435) is provided on the bottom of the groove (434) along the first direction (X), and the connector (42) abuts between the support rib (435) and the connecting plate (413).

4. The acquisition component as described in claim 3, characterized in that: At least one reinforcing rib (436) is provided at the connection between the extension (433) and the mounting part (437), and the supporting rib (435) is connected to the reinforcing rib (436).

5. The acquisition component as described in claim 2, characterized in that: The mounting part (437) has at least one buckle (431) protruding on the side away from the rivet (432) along the second direction (Z), and the position of the support base (43) is positioned by the buckle (431).

6. The acquisition component as described in claim 2, characterized in that: The acquisition unit (41) also includes a plurality of acquisition plates (415) connected to the substrate (412). The plurality of acquisition plates (415) are spaced apart along the first direction (X) and are arranged opposite to each other on both sides of the substrate (412) along the third direction (Y). The plurality of acquisition plates (415) are electrically connected to the terminals of the plurality of battery cells (3) one by one through electrical connecting pieces (411).

7. A CCS assembly, disposed on one side near the terminal post of a plurality of battery cells (3), characterized in that: The CCS assembly includes an isolation plate (8), an electrical connector (411), and a plurality of acquisition components (4) as described in any one of claims 1-6. The plurality of acquisition components (4) are spaced apart along a third direction (Y) on the isolation plate (8), and the acquisition element (41) of the acquisition component (4) is connected to the plurality of electrical connectors (411). The acquisition component (4) is electrically connected to the terminals of the plurality of battery cells (3) through the electrical connectors (411).

8. A battery pack, characterized in that, Includes the CCS component as described in claim 7.

9. The battery pack as described in claim 8, characterized in that, The battery pack also includes Box (1), including cavity; A crossbeam (2) is provided in the cavity along a third direction (Y) and divides the cavity into a battery area (11) and an electrical area (12). The upper end face of the crossbeam (2) is provided with a mounting hole (22). At least one battery module, the battery module being composed of a plurality of battery cells (3) arranged in an array, the battery module being disposed within the battery area (11); The CCS assembly is mounted on the battery module. The acquisition component (4) of the CCS assembly is electrically connected to the terminals of multiple battery cells (3) via an electrical connector (411). The support base (43) of the acquisition component (4) is positioned facing the electrical area (12). The connector (42) inside the support base (43) is electrically connected to the electrical components installed in the electrical area (12). The buckle (431) of the support base (43) is inserted into the mounting hole (22) so that the support base (43) is detachably connected to the crossbeam (2).

10. The battery pack as described in claim 9, characterized in that: The battery pack also includes multiple constraint members (7), each of which includes a stud (71) and a cable tie (72) connected together. The stud (71) is connected to the through hole (4331) of the support base (43) respectively, and the cable tie (72) is used to bind multiple connecting wires (6) that are connected to the connector (42) and the electrical components respectively.

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