Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, and relates to the technical field of power batteries. Specifically, in the battery pack, the high-voltage connector and the battery management system are arranged at two opposite ends of the shell. On the basis, a high-voltage interlocking line for connecting the high-voltage connector and the battery management system needs to span from one end of the shell to the other end of the shell along the first direction, so that connection is realized. In the wiring process, the high-voltage interlocking wire is limited and fixed through the limiting device arranged on the tray between the battery management system and the high-voltage connector, so that the beneficial effects that space resources in the battery pack are fully utilized, collision with the battery module is avoided, the fixing problem of the high-voltage interlocking wire is solved, and potential safety hazards are correspondingly solved are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and more specifically, to a battery pack and an electrical device. Background Art

[0002] The high-voltage interlock wire is a necessary detection means for the battery pack. The BMS (Battery Management System) is a detection means for detecting whether the high-voltage connector is properly connected with a low voltage. There is an interlock pin inside the high-voltage connection. When the plug and the socket are matched, the interlock pin is in a short-circuit state. At this time, the low-voltage path of the BMS detects a low-voltage signal and considers that the interlock circuit is normal, indicating that the high-voltage socket and plug are properly matched. On the contrary, the entire circuit presents an open-circuit state, and the BMS cannot detect the low-voltage signal, defaulting to an interlock failure, meaning that the high-voltage socket and plug are not properly matched. However, since the high-voltage interlock wire connecting the high-voltage outlet of the battery pack and the BMS has a fixing problem during the wiring process, it is prone to safety hazards. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a battery pack and an electrical device, which can make full use of the space resources inside the battery pack, solve the fixing problem of the high-voltage interlock wire, and correspondingly solve the safety hazard.

[0004] The embodiments of the utility model are implemented as follows:

[0005] In a first aspect, the utility model provides a battery pack, including:

[0006] A housing, in which a battery module is installed. A high-voltage connector and a battery management system are respectively arranged on opposite sides of the housing along a first direction;

[0007] A tray, which is arranged on a side of the battery module away from the inner bottom surface of the housing, and a limiting device is arranged on the tray;

[0008] A high-voltage interlock wire, which is limited and installed in the limiting device, and the high-voltage connector and the battery management system are connected through the high-voltage interlock wire.

[0009] In an optional embodiment, the limiting device includes a limiting groove recessed along the first direction, and the limiting groove is used for accommodating the high-voltage interlock wire.

[0010] In an optional embodiment, the limiting device further includes a limiting member connected to the limiting groove. A limiting cavity is formed between the limiting member and the limiting groove, and the number of the limiting members is multiple and they are arranged at intervals along the first direction.

[0011] In an alternative embodiment, the limiting member includes a first limiting block and a second limiting block that are relatively spaced apart along the second direction. A limiting notch for the high-voltage interlock wire to snap into is formed between the first limiting block and the second limiting block, and the width of the limiting notch is smaller than the diameter of the high-voltage interlock wire.

[0012] In an alternative embodiment, the area of the first limiting block is smaller than, equal to, or larger than the area of the second limiting block.

[0013] In an alternative embodiment, the first limiting block includes a first plate portion and a second plate portion, and both ends of the first plate portion are arc-transitioned with the second plate portion and the limiting groove respectively; the second limiting block includes a third plate portion and a fourth plate portion, and both ends of the third plate portion are arc-transitioned with the fourth plate portion and the limiting groove respectively.

[0014] In an alternative embodiment, both the limiting groove and the limiting member are formed by stamping.

[0015] In an alternative embodiment, the battery pack further includes cross beams disposed on both sides of the tray along the first direction, and limiting buckles are provided at positions corresponding to the limiting grooves on the upper end surfaces of the cross beams for guiding the high-voltage interlock wire.

[0016] In an alternative embodiment, the limiting buckle is an annular buckle with an adjustable inner diameter.

[0017] In a second aspect, the present utility model provides an electrical device including the battery pack according to any one of the foregoing embodiments.

[0018] The beneficial effects of the embodiments of the present utility model include:

[0019] The present utility model provides a battery pack and an electrical device. In this battery pack, the high-voltage connector and the battery management system are disposed at opposite ends of the housing. Based on this, the high-voltage interlock wire connecting the high-voltage connector and the battery management system needs to span from one end of the housing to the other end along the first direction to facilitate the connection. During the above wiring process, the high-voltage interlock wire is limited and fixed by the limiting device provided on the tray between the battery management system and the high-voltage connector, so as to achieve the beneficial effects of making full use of the space resources inside the battery pack, solving the fixing problem of the high-voltage interlock wire, avoiding collision with the battery module, and correspondingly solving potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic diagram of the battery pack provided by the embodiment of the present utility model;

[0022] Figure 2 Schematic diagram of the tray provided by the embodiment of the present utility model;

[0023] Figure 3 Provided by the embodiment of the present utility model Figure 2 Partial enlarged schematic diagram at position A in

[0024] Figure 4 Another schematic diagram of the tray provided by the embodiment of the present utility model;

[0025] Figure 5 Provided by the embodiment of the present utility model Figure 4 Schematic diagram along A-A;

[0026] Figure 6 Provided by the embodiment of the present utility model Figure 5 Partial enlarged schematic diagram at position B in

[0027] Figure 7 Another schematic diagram of the battery pack provided by the embodiment of the present utility model;

[0028] Figure 8 Provided by the embodiment of the present utility model Figure 4 Layout enlarged schematic diagram at position C in

[0029] Icons: 10 - Battery pack; 30 - Wiring harness; 50 - Fast charging; 100 - Tray; 101 - Limiting device; 110 - Limiting groove; 130 - Limiting member; 131 - First limiting block; 1311 - First plate portion; 1313 - Second plate portion; 133 - Second limiting block; 1331 - Third plate portion; 1333 - Fourth plate portion; 150 - Limiting cavity; 170 - Limiting notch; 200 - High - voltage connector; 300 - Battery management system; 400 - High - voltage interlock wire; 500 - Housing; 600 - Cross beam; 610 - Limiting buckle; 611 - Connecting seat; 613 - Adjusting belt; 700 - Battery module. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0032] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical", etc. do not mean that the components are required to be absolutely horizontal or hanging vertically, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0035] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Embodiment

[0037] An embodiment of the present utility model provides an electrical device, which specifically includes a wire harness 30, a battery pack 10, and a fast charger 50. Among them, the fast charger 50 is connected to the housing 500 in the battery pack 10 and is located on one side of the high-voltage connector 200. One end of the high-voltage interlock wire 400 is divided into two branches, both of which are integrated with the female head of the high-voltage connector, and are respectively connected to the high-voltage connector 200 and the fast charger 50. And the other end of the high-voltage interlock wire 400 is integrally inserted into the battery management system 300 oppositely arranged on the housing 500 together with the wire harness 30. It can be understood that the high-voltage interlock wire 400 of this electrical device needs to cross from one end of the housing 500 to the other end. Through the specific design in the battery pack 10, the fixing problem of the high-voltage interlock wire 400 during the wiring process is solved, and potential safety hazards are eliminated. Next, each component of the battery pack 10 provided in this embodiment and the corresponding relationship between them will be described in detail.

[0038] Please refer to Figure 1 , Figure 1 FIG. is a schematic diagram of the battery pack 10 provided by the embodiment of the present utility model, where the first direction is the x direction in the figure, the second direction is the y direction in the figure, and the first direction and the second direction are perpendicular to each other. The present utility model provides a battery pack 10, which includes a housing 500, a tray 100, and a high-voltage interlock wire 400. Among them, a battery module 700 is installed in the housing 500, and a high-voltage connector 200 and a battery management system 300 are respectively arranged on opposite sides of the housing 500 along the first direction. The tray 100 is arranged on one side of the battery module 700 away from the inner bottom surface of the housing 500, and a limiting device 101 is arranged on the tray 100; the high-voltage interlock wire 400 is limited and installed in the limiting device 101, and the high-voltage connector 200 and the battery management system 300 are connected through the high-voltage interlock wire 400.

[0039] It can be understood that in the battery pack 10 provided in this application, the high-voltage connector 200 and the battery management system 300 are arranged at opposite ends of the housing 500. Based on this, the high-voltage interlock wire 400 connecting the high-voltage connector 200 and the battery management system 300 needs to cross from one end of the housing 500 to the other end along the first direction to facilitate the connection. During the above wiring process, the high-voltage interlock wire 400 is limited and fixed by the limiting device 101 arranged on the tray 100 between the battery management system 300 and the high-voltage connector 200, so as to make full use of the space resources in the battery pack 10, solve the fixing problem of the high-voltage interlock wire 400, avoid collision with the battery module 700, and correspondingly eliminate potential safety hazards.

[0040] Please refer to Figure 2 , Figure 2Schematic diagram of the tray 100 provided by the embodiments of the present utility model. In some embodiments, the tray 100 is made of plastic as the material and is formed by plastic processing technology. The specific implementation method is as follows: After heating and softening the flat plastic sheet material, it is vacuum adsorbed on the surface of the mold and cooled to form. Please refer to Figure 2 and Figure 3 , where Figure 3 is the enlarged schematic diagram of the position A in Figure 2 provided by the embodiments of the present utility model. Next, the specific structure of the limiting device 101 provided on the tray 100 will be described in detail.

[0041] Specifically, the limiting device 101 includes a limiting groove 110 recessed along the first direction, and the limiting groove 110 is used to accommodate the high-voltage interlock wire 400. That is to say, the recessed limiting groove 110 extends from one end of the tray 100 to the opposite end along the first direction. On the one hand, it can achieve full-path limitation relative to the tray 100, thereby reducing the shaking or offset of the high-voltage interlock wire 400 and ensuring the stability of the connection; on the other hand, it can ensure that the routing path of the high-voltage interlock wire 400 is the shortest, avoiding unnecessary bending, so as to achieve the purpose of sensitively obtaining the detection result.

[0042] To further limit the high-voltage interlock wire 400 in multiple directions, the limiting device 101 further includes a limiting member 130 connected to the limiting groove 110. A limiting cavity 150 is formed between the limiting member 130 and the limiting groove 110, and the number of the limiting members 130 is multiple and is arranged at intervals along the first direction. It can be understood that the high-voltage interlock wire 400 is limited in multiple parts along the first direction in the limiting cavity 150. Thus, on the basis of the horizontal limitation of the limiting groove 110, the high-voltage interlock wire 400 is further vertically limited by the limiting member 130 to avoid unpredictable displacement of the high-voltage interlock wire 400 during the use of the battery pack 10.

[0043] Based on the above, when mass-producing the tray 100, both the limiting groove 110 and the limiting member 130 are formed by stamping, so as to avoid introducing other components, save the manufacturing cost and mold opening time of individual fixing parts, and reduce the cost. In some embodiments, the staff can first stamp the limiting groove 110 from top to bottom, and then stamp the limiting member 130 from bottom to top. Optionally, the depth dimension and width dimension of the limiting groove 110 and / or the limiting member 130 can be designed according to the wire diameter of the high-voltage interlock wire 400.

[0044] Such as Figure 3As shown, the limiting member 130 includes a first limiting block 131 and a second limiting block 133 that are relatively spaced apart along the second direction. A limiting notch 170 for the high-voltage interlock wire 400 to be snapped into is formed between the first limiting block 131 and the second limiting block 133. It can be understood that the setting of the limiting notch 170 increases the deformability of the limiting cavity 150, so as to more precisely match the actual position of the high-voltage interlock wire 400 bundle 30 in a dynamic or changing working environment, ensuring that the limiting effect is neither loose nor overly tight. Correspondingly, to prevent the high-voltage interlock wire 400 from slipping out of the limiting notch 170 in extreme cases, the width of the limiting notch 170 is smaller than the diameter of the high-voltage interlock wire 400, thereby effectively preventing accidental detachment and greatly enhancing safety.

[0045] Based on different application requirements, the area of the first limiting block 131 is smaller than, equal to, or larger than the area of the second limiting block 133. That is to say, the limiting notch 170 can have three forms, namely, biased to the far right, biased to the far left, and in the middle, so as to adaptively match high-voltage interlock wires 400 of different shapes and sizes, or adaptively match different application scenarios. For example, when the battery pack 10 is prone to energy impact from the left, the limiting notch 170 is biased to the right, and the area of the first limiting block 131 is smaller than the area of the second limiting block 133 to ensure that the second limiting block 133 is more stable and can better absorb and disperse the impact energy.

[0046] As Figure 4 、 Figure 5 and Figure 6 shown, to further improve the safety of the high-voltage interlock wire 400 when it is limited, the first limiting block 131 includes a first plate portion 1311 and a second plate portion 1313, and both ends of the first plate portion 1311 are arc-transitioned with the second plate portion 1313 and the limiting groove 110 respectively; the second limiting block 133 includes a third plate portion 1331 and a fourth plate portion 1333, and both ends of the third plate portion 1331 are arc-transitioned with the fourth plate portion 1333 and the limiting groove 110 respectively. It can be understood that the design of the arc transition in the above connection can absorb and dissipate the impact energy through appropriate bending deformation, thereby preventing the impact energy from directly acting on the high-voltage interlock wire 400 and reducing the risk of damage.

[0047] Based on the setting of the above limiting device 101, the high-voltage interlock wire 400 can be effectively limited and protected within the groove or the limiting cavity 150, ensuring that the high-voltage interlock wire 400 is routed correctly during use and will not have unpredictable movement or breakage. In addition, it should be emphasized that the above design is convenient for disassembly and assembly, fixed reliably, saving the packing time; and it ensures that under limited space conditions, without increasing the space occupied by the tray 100, reasonable utilization and layout are achieved.

[0048] Please refer toFigure 7 and Figure 8 , Figure 7 is another schematic diagram of the battery pack 10 provided by the embodiment of the present invention. Figure 8 is provided by the embodiment of the present invention Figure 4 An enlarged schematic diagram of the position C in. In some embodiments, the battery pack 10 further includes cross beams 600 disposed on both sides of the tray 100 along the first direction, and a limit buckle 610 is disposed at a position corresponding to the limit groove 110 on the upper end surface of the cross beam 600. The limit buckle 610 is used to guide the high-voltage interlock wire 400. Based on the above settings, the limit buckle 610 can fixedly constrain the part of the high-voltage interlock wire 400 extending out of the limit groove 110, so as to further ensure that the high-voltage interlock wire 400 will not produce unpredictable displacement and improve stability.

[0049] Please refer to again Figure 8 , to enhance the adaptability between the limit buckle 610 and the high-voltage interlock wire 400, the limit buckle 610 is an annular buckle with an adjustable inner diameter. Specifically, the limit buckle 610 includes a connecting seat 611 and an adjusting belt 613. The connecting seat 611 is connected to the cross beam 600, and one end of the adjusting belt 613 is connected to the connecting seat 611, and the other end is movably passed through the adjusting cavity opened in the connecting seat 611. Based on this, by adjusting the adjusting belt 613 during work, the adjustment of the inner diameter of the annular buckle can be realized, so as to facilitate the disassembly, installation or fixation of the high-voltage interlock wire 400.

[0050] In summary, the present invention provides a battery pack 10 and an electrical device. In the battery pack 10, the high-voltage connector 200 and the battery management system 300 are disposed at opposite ends of the housing 500. Based on this, the high-voltage interlock wire 400 connecting the high-voltage connector 200 and the battery management system 300 needs to span from one end of the housing 500 to the other end along the first direction to facilitate the connection. During the above wiring process, the high-voltage interlock wire 400 is limited and fixed by the limiting device 101 provided on the tray 100 between the battery management system 300 and the high-voltage connector 200, so as to achieve the beneficial effects of making full use of the space resources in the battery pack 10, solving the fixing problem of the high-voltage interlock wire 400, avoiding collision with the battery module 700, and correspondingly solving potential safety hazards.

[0051] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery pack, characterized in that: include: A housing (500), wherein a battery module (700) is installed in the housing (500), and a high-voltage connector (200) and a battery management system (300) are respectively arranged on opposite sides of the housing (500) along a first direction; A tray (100), the tray (100) being arranged on a side of the battery module (700) away from the inner bottom surface of the shell (500), and a limiting device (101) being arranged on the tray (100); A high-voltage interlocking wire (400) is installed in a position-limiting manner in the position-limiting device (101); the high-voltage connector (200) and the battery management system (300) are connected via the high-voltage interlocking wire (400).

2. The battery pack according to claim 1, characterized in that: The limiting device (101) comprises a limiting groove (110) recessed along the first direction, and the limiting groove (110) is used to accommodate the high-voltage interlocking wire (400).

3. The battery pack according to claim 2, characterized in that: The limiting device (101) further comprises a limiting member (130) connected to the limiting groove (110), a limiting cavity (150) is formed between the limiting member (130) and the limiting groove (110), and the limiting members (130) are multiple in number and are arranged at intervals along the first direction.

4. The battery pack according to claim 3, characterized in that: The limiting member (130) comprises a first limiting block (131) and a second limiting block (133) which are arranged at a relative interval along a second direction, and a limiting notch (170) for the high-voltage interlocking wire (400) to be inserted is formed between the first limiting block (131) and the second limiting block (133), and the width of the limiting notch (170) is smaller than the diameter of the high-voltage interlocking wire (400).

5. The battery pack according to claim 4, characterized in that: The area of ​​the first limiting block (131) is smaller than, equal to, or larger than the area of ​​the second limiting block (133).

6. The battery pack according to claim 4, characterized in that: The first limiting block (131) comprises a first plate portion (1311) and a second plate portion (1313), and the two ends of the first plate portion (1311) respectively transition in an arc shape with the second plate portion (1313) and the limiting groove (110); the second limiting block (133) comprises a third plate portion (1331) and a fourth plate portion (1333), and the two ends of the third plate portion (1331) respectively transition in an arc shape with the fourth plate portion (1333) and the limiting groove (110).

7. The battery pack according to any one of claims 2 to 6, characterized in that: The limiting groove (110) and the limiting member (130) are both made by stamping.

8. The battery pack according to any one of claims 2 to 6, characterized in that: The battery pack (10) further comprises a crossbeam (600) arranged on both sides of the tray (100) along the first direction, and a limit buckle (610) is arranged on the upper end surface of the crossbeam (600) at a position corresponding to the limit groove (110), and the limit buckle (610) is used to guide the high-voltage interlocking line (400).

9. The battery pack according to claim 8, characterized in that: The limiting buckle (610) is an annular buckle with an adjustable inner diameter.

10. An electrical device, characterized in that: Comprising a battery pack (10) as claimed in any one of claims 1 to 9.

Images