A battery

Abstract

The utility model provides a kind of battery, it is related to power battery technical field, including box, battery monomer and high pressure connecting structure.The high pressure connecting structure includes BDU, high pressure plug-in, copper bar and limiting unit.Between them, BDU and high pressure plug-in are respectively located the two ends of box along with first direction opposite;Two ends of copper bar are connected BDU with high pressure plug-in.Limiting unit is connected with box, and the position of copper bar from BDU outlet is provided with the wire slot that extends along with first direction and cooperates with copper bar.Easy to understand is, on the one hand, wire slot provides definite path for copper bar, ensures that copper bar is arranged according to predetermined mode, guarantees the reliability of high pressure connection;On the other hand, wire slot provides certain physical protection for copper bar, prevents external factor from causing copper bar displacement, improves the anti-shock capacity of battery, reduces maintenance cost;Thirdly, by setting wire slot, the number of times of copper bar bending is reduced, and production manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and more specifically, to a battery. Background Technology

[0002] In recent years, the emergence of new energy vehicles has played a significant role in promoting social development and environmental protection. As the power source for new energy vehicles, the safety and performance of lithium-ion battery packs are particularly important. In the battery pack system, the high-voltage connector is located at the rear of the battery pack, while the BDU (Battery Distribution Unit) is located at the front. The high-voltage output copper busbar is used to conduct electricity between the connector and the BDU. The copper busbar requires multiple bending operations, increasing production costs and complicating wiring, thus affecting the overall safety of the battery pack and the ease of assembly and processing. Utility Model Content

[0003] The purpose of this invention is to provide a battery in which a high-voltage connection structure can support and fix the copper busbar after it exits the BDU, thereby preventing external factors (such as vibration and collision) from causing displacement of the copper busbar, ensuring that the position and orientation of the copper busbar are always correct, and improving the safety of use.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] In a first aspect, this utility model provides a battery, including a housing, a battery cell, and a high-voltage connection structure. The battery cell and the high-voltage connection structure are disposed within the housing. The high-voltage connection structure includes a battery drain unit (BDU), a high-voltage plug, a copper busbar, and a limiting unit. The BDU and the high-voltage plug are located at opposite ends of the housing along a first direction. The two ends of the copper busbar are connected to the BDU and the high-voltage plug, respectively. The limiting unit is connected to the housing and is provided with a wiring groove extending along the first direction and cooperating with the copper busbar. The first direction is the length direction of the housing.

[0006] In an optional embodiment, the box body includes a crossbeam and a structural beam. The crossbeam extends along a second direction and is connected to the box body. The structural beam extends along a first direction and is connected between the box body and the crossbeam. The second direction is the width direction of the box body. The limiting unit includes an interconnected mounting assembly and a limiting member. The limiting member has a wiring groove. The mounting assembly is connected to the structural beam.

[0007] In an optional embodiment, the mounting assembly includes a first mounting frame, which includes a first plate portion, two second plate portions, and two third plate portions; wherein the first plate portion is connected to a limiting member, the two second plate portions are disposed at both ends of the first plate portion and bent and connected thereto, and the third plate portion is disposed at the end of the second plate portion away from the first plate portion and bent and connected thereto, so as to connect the structural beam.

[0008] In an optional embodiment, the mounting assembly includes at least two first mounting brackets, which are spaced apart along a first direction.

[0009] In an optional embodiment, the mounting assembly further includes a second mounting bracket, which includes a fourth plate portion and a fifth plate portion that are bent and connected, with the fourth plate portion connected to the crossbeam and the fifth plate portion connected to the limiting member.

[0010] In an optional embodiment, the mounting assembly includes at least two second mounting brackets, which are disposed on opposite sides of the limiting member along a second direction.

[0011] In an alternative embodiment, the first mounting bracket is welded to or detachably connected to the structural beam; and / or, the second mounting bracket is welded to or detachably connected to the crossbeam.

[0012] In an optional embodiment, the limiting member includes a first wall portion, a second wall portion, and a third wall portion that are bent and connected in sequence to form a cable tray, the first wall portion, the second wall portion, and / or the third wall portion being connected to the mounting assembly.

[0013] In an optional embodiment, the limiting unit further includes a cable tie, which is sleeved on the limiting member to position the copper busbar within the wiring groove.

[0014] In an optional embodiment, the battery also includes a BMS, and the crossbeam and housing form an electrical compartment. The BMS, BDU, and limiting unit are all disposed in the electrical compartment, and the limiting unit is disposed between the BMS and the BDU.

[0015] The beneficial effects of the battery provided in this embodiment of the present invention include:

[0016] This utility model provides a battery, including a housing, a battery cell, and a high-voltage connection structure. The high-voltage connection structure includes a battery drain interrupter (BDU), a high-voltage connector, a copper busbar, and a limiting unit. The BDU and the high-voltage connector are located at opposite ends of the housing along a first direction; the two ends of the copper busbar are connected to the BDU and the high-voltage connector, respectively. Based on this, the limiting unit is connected to the housing, and a wiring groove extending along the first direction and cooperating with the copper busbar is provided at the position where the copper busbar exits from the BDU. It is easy to understand that, on the one hand, the wiring groove provides a clear path for the copper busbar, ensuring that the copper busbar is arranged in a predetermined manner, guaranteeing the reliability of the high-voltage connection; on the other hand, the wiring groove provides a certain degree of physical protection for the copper busbar, preventing displacement caused by external factors (such as vibration and collision), improving the battery's shock resistance, and reducing maintenance costs; furthermore, by setting up the wiring groove, the number of bends in the copper busbar is reduced, lowering manufacturing costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the battery structure provided in this embodiment;

[0019] Figure 2 Provided for this embodiment Figure 1 Enlarged schematic diagram of the structure at point A;

[0020] Figure 3 This is a schematic diagram of the limiting unit provided in this embodiment;

[0021] Figure 4 This is another structural schematic diagram of the limiting unit provided in this embodiment.

[0022] Icons: 1-Battery; 10-Box; 11-Electrical compartment; 20-BMS; 30-Battery cell; 50-High voltage connection structure; 100-BDU; 300-High voltage plug-in; 400-Copper busbar; 500-Limiting unit; 510-First mounting bracket; 511-First plate; 513-Second plate; 515-Third plate; 530-Limiting component; 531-First wall; 533-Second wall; 535-Third wall; 537-Cable tray; 550-Second mounting bracket; 551-Fourth plate; 553-Fifth plate; 570-Cable tie; 700-Structural beam; 800-Crossbeam; 910-First direction; 930-Second direction. Detailed Implementation

[0023] In related technologies, the technical solution of placing the BDU at the front end of the enclosure and the high-voltage contact component at the rear end of the enclosure has the problem that the high-voltage copper busbar connecting the two is prone to movement or swaying. In addition, the high-voltage copper busbar needs to be bent multiple times at the point where the high-voltage copper busbar exits from the BDU, which increases the production and processing costs and also poses safety hazards.

[0024] To address the aforementioned problems, this utility model provides a battery in which the high-voltage connection structure can support and fix the copper busbar and reduce multiple bending of the copper busbar, thereby preventing external factors (such as vibration and collision) from causing displacement of the copper busbar, ensuring that the position and orientation of the copper busbar are always correct, and guaranteeing the reliability of the high-voltage connection. This improves the safety of the battery and reduces manufacturing costs.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing 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, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0030] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0031] The overall structure, working principle, and technical effects of the battery provided by this utility model are described in detail below with reference to embodiments and accompanying drawings.

[0032] Please see Figure 1 and Figure 2 This utility model provides a battery 1, which is applied in the field of power battery technology, including a housing 10, a battery cell 30, and a high-voltage connection structure 50. It can be understood that the battery cell 30 and the high-voltage connection structure 50 are disposed inside the housing 10. The high-voltage connection structure 50 includes a BDU 100, a high-voltage plug 300, a copper busbar 400, and a limiting unit 500.

[0033] In this embodiment, BDU100 and high-voltage plug-in 300 are located at opposite ends of the housing 10 along the first direction 910. The two ends of the copper busbar 400 are connected to BDU100 and high-voltage plug-in 300, respectively. It should be noted that in this embodiment, the first direction 910 is the length direction of the housing 10. Based on the above, the limiting unit 500 is connected to the housing 10 and is provided with a wiring groove 537 extending along the first direction 910 and cooperating with the copper busbar 400.

[0034] Based on the above setup, it is easy to understand that, on the one hand, after the copper busbar 400 is led out from the BDU100, the cable tray 537 provides a clear path for the copper busbar 400, ensuring that the copper busbar 400 is arranged in a predetermined manner and reducing the bending of the copper busbar 400; on the other hand, the cable tray 537 provides a certain degree of physical protection for the copper busbar 400, preventing external factors (such as vibration and collision) from causing displacement of the copper busbar 400, and reducing maintenance costs; furthermore, the cable tray 537 reduces the number of bends of the copper busbar 400, reducing manufacturing costs.

[0035] Please see Figure 2 To enhance the rigidity and stability of the housing 10, the housing 10 includes a crossbeam 800 and a structural beam 700. The crossbeam 800 extends along a second direction 930 and connects to the housing 10, while the structural beam 700 extends along a first direction 910 and connects between the housing 10 and the crossbeam 800. It should be noted that the second direction 930 is the width direction of the housing 10. Corresponding to the aforementioned embodiment, the limiting unit 500 includes an interconnected mounting assembly and a limiting member 530. The limiting member 530 has a wiring groove 537, and the mounting assembly is connected to the structural beam 700. Based on the above configuration, the mounting assembly can ensure the stability of the limiting member 530 and its wiring groove 537, preventing the limiting member 530 from shifting due to vibration or external force.

[0036] Further, please refer to Figure 3To improve the reliability of the connection between the mounting assembly and the structural beam 700, the mounting assembly includes a first mounting bracket 510. Specifically, the first mounting bracket 510 includes a first plate portion 511, two second plate portions 513, and two third plate portions 515. The first plate portion 511 is connected to a limiting member 530, ensuring the limiting member 530 is stably fixed within the housing 10 and will not loosen or shift due to external forces. The two second plate portions 513 are located at both ends of the first plate portion 511 and are bent and connected thereto. The third plate portions 515 are located at the ends of the second plate portions 513 away from the first plate portion 511 and are bent and connected thereto to connect the structural beam 700. It is easy to understand that by connecting multiple bends (from the first plate 511 to the second plate 513 and then to the third plate 515), a Z-shaped structure is formed, which allows the force to be transmitted from the first plate 511 through the second plate 513 to the third plate 515, and then to the structural beam 700, forming an efficient force transmission path, reducing unnecessary stress concentration and improving seismic resistance.

[0037] like Figure 3 As shown, in some embodiments, the mounting assembly includes at least two first mounting brackets 510, and the at least two first mounting brackets 510 are spaced apart along a first direction 910. Based on this, it can be understood that, on the one hand, multiple first mounting brackets 510 can provide more support points for the limiting member 530, significantly enhancing the stability and reliability of its connection with the structural beam 700; on the other hand, multiple first mounting brackets 510 can evenly distribute the force, reducing the risk of deformation or damage caused by uneven local stress.

[0038] like Figure 4 As shown, in some embodiments, the mounting assembly further includes a second mounting bracket 550. The second mounting bracket 550 includes a fourth plate portion 551 and a fifth plate portion 553 that are bent and connected. The fourth plate portion 551 is connected to the crossbeam 800, providing a reliable lateral fixing point and enhancing the stability and rigidity of the high-pressure connection structure 50 in the width direction. The fifth plate portion 553 is connected to the limiting member 530, ensuring that the limiting member 530 is stably fixed within the housing 10 and will not loosen or shift due to external forces.

[0039] Based on the application of the first mounting bracket 510, a second mounting bracket 550 is introduced and connected to the housing crossbeam 800, significantly improving the fixing effect of the limiting member 530 in the width direction. That is, the second mounting bracket 550 can effectively prevent the limiting member 530 from shifting or swaying in the lateral (width direction), ensuring its stability in all directions. Through the multi-dimensional fixing method presented by the combined application of the first mounting bracket 510 and the second mounting bracket 550, the entire high-voltage connection structure 50 can maintain a high degree of stability and reliability under various operating conditions, thereby further improving the overall performance and safety of the battery 1.

[0040] To further enhance stability along the width direction and achieve a bidirectional fixing effect, such as Figure 4 As shown, the mounting assembly includes at least two second mounting brackets 550, which are disposed on opposite sides of the limiting member 530 along the second direction 930. Based on the above, the first mounting bracket 510 and the second mounting brackets 550 on both sides work together to form a three-dimensional frame structure, further enhancing the rigidity and deformation resistance of the entire high-voltage connection structure 50.

[0041] In the embodiments provided by this utility model, the first mounting bracket 510 is welded to or detachably connected to the structural beam 700; and / or, the second mounting bracket 550 is welded to or detachably connected to the crossbeam 800. Specifically, in Figure 3 In the illustrated embodiment, the first mounting bracket 510 is used alone and is either welded to or detachably connected to the structural beam 700; Figure 4 In the illustrated embodiment, the first mounting bracket 510 and the second mounting bracket 550 are welded to or detachably connected to the structural beam 700 and the crossbeam 800, respectively. Alternatively, in other embodiments, the second mounting bracket 550 can be used independently, welded to or detachably connected to the crossbeam 800. Furthermore, it should be noted that a detachable connection may refer to the mounting bracket having fixing holes for bolt engagement, allowing for detachable connection to the structural beam 700 via bolts.

[0042] Please refer to it again. Figure 3 and Figure 4 The limiting member 530 will now be described. As shown in the figure, the limiting member 530 includes a first wall portion 531, a second wall portion 533, and a third wall portion 535 that are sequentially bent and connected to form a wiring groove 537. That is, the cross-sectional shape of the wiring groove 537 is U-shaped, providing semi-enclosed physical protection for the copper busbar 400, reducing bending and displacement caused by external factors (such as vibration, collision, friction, etc.). Moreover, the semi-enclosed form facilitates heat dissipation of the high-voltage copper busbar 400 and also simplifies installation and maintenance. For example, during installation, the semi-enclosed structure facilitates adjustment of the copper busbar 400's routing; and for example, the semi-enclosed structure makes operation easier when frequent inspection or replacement is required.

[0043] Based on this, the first wall portion 531, the second wall portion 533, and / or the third wall portion 535 are connected to the mounting assembly. It is easy to understand that different mounting assemblies result in different connected wall portions. For example, in... Figure 3 In the illustrated embodiment, the second wall portion 533 is connected to the first mounting bracket 510 in the mounting assembly; in Figure 4In the illustrated embodiment, the first wall portion 531 and / or the third wall portion 535 are connected to the second mounting bracket 550 in the mounting assembly. In practical applications, it is sufficient to ensure that at least one of the first wall portion 531, the second wall portion 533, and the third wall portion 535 is connected to the mounting assembly; this utility model does not impose any specific limitations.

[0044] Furthermore, the limiting unit 500 also includes a cable tie 570, which is fitted onto the limiting member 530 to position the copper busbar 400 within the cable tray 537, preventing displacement or shaking during use and ensuring the stability and reliability of the copper busbar 400. In particular, in a vibrating environment, the cable tie 570 can effectively prevent the copper busbar 400 from loosening or falling off due to vibration, improving the seismic resistance of the high-voltage connection structure 50.

[0045] In addition, battery 1 also includes BMS20 (Battery Management System). Furthermore, the crossbeam 800 and the housing 10 form an electrical compartment 11, in which the BMS20, BDU100, and limiting unit 500 are all housed, with the limiting unit 500 positioned between the BMS20 and BDU100. It can be understood that by centrally arranging the BMS20, BDU100, and limiting unit 500 within the electrical compartment 11 formed by the crossbeam 800 and housing 10, a highly compact layout is achieved, improving space utilization, reducing additional installation space, and making maintenance and repair more convenient.

[0046] In summary, this utility model provides a battery 1, including a housing 10, a battery cell 30, and a high-voltage connection structure 50. The high-voltage connection structure 50 includes a battery drain unit (BDU) 100, a high-voltage plug-in 300, a copper busbar 400, and a limiting unit 500. The BDU 100 and the high-voltage plug-in 300 are located at opposite ends of the housing 10 along a first direction 910; the two ends of the copper busbar 400 are connected to the BDU 100 and the high-voltage plug-in 300, respectively. Based on the above, the limiting unit 500 is connected to the housing 10, and a wiring groove 537 extending along the first direction 910 and cooperating with the copper busbar 400 is provided at the position where the copper busbar 400 exits from the BDU 100. It is easy to understand that, on the one hand, the wiring trough 537 provides a clear path for the copper busbar 400, ensuring that the copper busbar 400 is arranged in a predetermined manner, thus guaranteeing the reliability of the high-voltage connection; on the other hand, the wiring trough 537 provides a certain degree of physical protection for the copper busbar 400, preventing external factors (such as vibration and collision) from causing displacement of the copper busbar 400, improving the shock resistance of the battery 1, and reducing maintenance costs; furthermore, by setting the wiring trough 537, the number of bends of the copper busbar 400 is reduced, thereby reducing manufacturing costs.

[0047] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A battery, comprising a housing (10), a battery cell (30), and a high-voltage connection structure (50), characterized in that, The battery cell (30) and the high-voltage connection structure (50) are disposed inside the housing (10). The high-voltage connection structure (50) includes a BDU (100), a high-voltage plug-in (300), a copper busbar (400), and a limiting unit (500). The BDU (100) and the high-voltage plug-in (300) are respectively located at opposite ends of the housing (10) along a first direction (910). The two ends of the copper busbar (400) are respectively connected to the BDU (100) and the high-voltage plug-in (300). The limiting unit (500) is connected to the housing (10) and is provided with a wiring groove (537) extending along the first direction (910) and cooperating with the copper busbar (400). The first direction (910) is the length direction of the housing (10).

2. The battery according to claim 1, characterized in that, The housing (10) includes a crossbeam (800) and a structural beam (700). The crossbeam (800) extends along a second direction (930) and is connected to the housing (10). The structural beam (700) extends along a first direction (910) and is connected between the housing (10) and the crossbeam (800). The second direction (930) is the width direction of the housing (10). The limiting unit (500) includes an interconnected mounting assembly and a limiting member (530). The limiting member (530) has the wiring groove (537). The mounting assembly is connected to the structural beam (700).

3. The battery according to claim 2, characterized in that, The mounting assembly includes a first mounting bracket (510), which includes a first plate portion (511), two second plate portions (513), and two third plate portions (515). The first plate portion (511) is connected to the limiting member (530), the two second plate portions (513) are disposed at both ends of the first plate portion (511) and bent to connect thereto, and the third plate portion (515) is disposed at the end of the second plate portion (513) away from the first plate portion (511) and bent to connect thereto, so as to connect the structural beam (700).

4. The battery according to claim 3, characterized in that, The mounting assembly includes at least two first mounting brackets (510), and the at least two first mounting brackets (510) are spaced apart along the first direction (910).

5. The battery according to claim 3, characterized in that, The mounting assembly further includes a second mounting bracket (550), which includes a fourth plate portion (551) and a fifth plate portion (553) that are bent and connected, wherein the fourth plate portion (551) is connected to the crossbeam (800) and the fifth plate portion (553) is connected to the limiting member (530).

6. The battery according to claim 5, characterized in that, The mounting assembly includes at least two second mounting brackets (550), and the second mounting brackets (550) are disposed on opposite sides of the limiting member (530) along the second direction (930).

7. The battery according to claim 5, characterized in that, The first mounting bracket (510) is welded or detachably connected to the structural beam (700); and / or, the second mounting bracket (550) is welded or detachably connected to the crossbeam (800).

8. The battery according to claim 2, characterized in that, The limiting member (530) includes a first wall portion (531), a second wall portion (533), and a third wall portion (535) that are bent and connected in sequence to form the wiring groove (537), and the first wall portion (531), the second wall portion (533), and / or the third wall portion (535) are connected to the mounting assembly.

9. The battery according to claim 2, characterized in that, The limiting unit (500) also includes a cable tie (570), which is sleeved on the limiting member (530) to position the copper busbar (400) in the wiring groove (537).

10. The battery according to any one of claims 2-6, characterized in that, The battery (1) also includes a BMS (20), the crossbeam (800) and the housing (10) form an electrical compartment (11), the BMS (20), the BDU (100) and the limiting unit (500) are all disposed in the electrical compartment (11), and the limiting unit (500) is disposed between the BMS (20) and the BDU (100).

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