CN219917528U

CN219917528U - Battery pack circuit breaking unit and battery pack

Info

Publication number: CN219917528U
Application number: CN202320769806.1U
Authority: CN
Inventors: 廖育贤
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-10-27
Anticipated expiration: 2033-04-07

Abstract

The utility model provides a battery pack breaking unit and a battery pack. The battery pack breaking unit comprises a base and an upper cover, wherein the base and the upper cover are covered to form a containing cavity, components are arranged in the containing cavity, and the base is provided with a position avoiding part; the component comprises a positive electrode output piece and a negative electrode output piece, and the positive electrode output piece and the negative electrode output piece extend from the accommodating cavity to the avoidance part. In the embodiment of the utility model, the base is provided with the avoidance part, so that one ends of the positive electrode output piece and the negative electrode output piece in the component extend into the avoidance part, and the positive electrode output piece and the negative electrode output piece can be directly connected with the connector in the avoidance part, thereby omitting an additional connection copper bar, reducing the cost and simplifying the process.

Description

Battery pack circuit breaking unit and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack breaking unit and a battery pack.

Background

A battery pack breaking unit (Battery Disconnect Unit, abbreviated as BDU) is a high voltage distribution box for controlling the current on-off of the overall device. The battery pack breaking unit is installed in the accommodating shell of the battery pack and is connected with the connector, so that electric energy is output to the outside through the connector.

In the related art, the BDU is connected with the connector through the connecting copper bar, and the connecting copper bar is required to be additionally manufactured by the design, so that the production and management cost is improved. Meanwhile, the connecting copper bars are required to be installed in the reserved space, so that space waste is caused. In addition, the copper bar connection part is also required to be manufactured with a corresponding insulation protective sleeve to be isolated so as to meet related protection standards, so that the production cost is further improved, and the process steps are also increased.

Disclosure of Invention

The embodiment of the utility model provides a battery pack breaking unit and a battery pack, which can solve the technical problems of high connection cost and complex process of the battery pack breaking unit and a connector.

In a first aspect, embodiments of the present utility model provide a battery pack disconnection unit.

The battery pack disconnection unit includes:

the base and the upper cover are covered to form a containing cavity, components are arranged in the containing cavity, and the base is provided with a avoidance part;

the component comprises a positive electrode output piece and a negative electrode output piece, and the positive electrode output piece and the negative electrode output piece extend from the accommodating cavity to the avoidance part.

In one embodiment, the side wall of the base and the side wall of the upper cover are recessed to one side of the accommodating cavity to form a notch, and the positive electrode output piece and the negative electrode output piece extend from the accommodating cavity to the notch.

In one embodiment, the positive output and the negative output are spatially offset from each other within the recess.

In one embodiment, the positive output is a soft copper bar and the negative output is a soft copper bar.

In one embodiment, the notch is U-shaped, and the side wall of the base and the side wall of the upper cover form a surrounding surface of the U-shape.

In one embodiment, the components include a main positive relay and a main negative relay; one end of the positive electrode output piece is connected with the main positive relay, and the other end of the positive electrode output piece extends to the notch; one end of the negative electrode output piece is connected with the main negative relay, and the other end of the negative electrode output piece extends to the notch.

In one embodiment, the battery pack breaking unit further includes a protective cover detachably connected to the upper cover, the protective cover corresponding to the notch, the protective cover shielding at least a portion of the positive output member and a portion of the negative output member.

In one embodiment, hooks are arranged on opposite sides of the protective cover, bayonets are arranged on opposite sides of the side wall of the upper cover, and the hooks are clamped with the bayonets.

In a second aspect, embodiments of the present utility model provide a battery pack.

In an embodiment, the battery pack comprises a containing shell and the battery pack breaking unit, the battery pack breaking unit is located in the containing shell, a connector is arranged on the side wall of the containing shell, a notch of the battery pack breaking unit is close to the connector, the connector is located at one end of the containing shell and extends to the notch, and the connector is connected with an anode output piece of the battery pack breaking unit and a cathode output piece of the battery pack breaking unit in the notch respectively.

In one embodiment, the positive electrode output piece and the negative electrode output piece are respectively provided with a connecting hole at one end of the notch, and the orthographic projections of the connecting holes on the bottom wall of the accommodating shell are not overlapped; the connector is provided with a first connecting pin and a second connecting pin, the first connecting pin is in threaded connection with the positive electrode output piece through the connecting hole, and the second connecting pin is in threaded connection with the negative electrode output piece through the connecting hole.

In one embodiment, the side wall of the base of the battery pack breaking unit is provided with a fixing foot, and the fixing foot is connected with the bottom wall of the accommodating shell.

The embodiment of the utility model has the beneficial effects that:

in the embodiment of the utility model, the base is provided with the avoidance part, so that one ends of the positive electrode output piece and the negative electrode output piece in the component extend into the avoidance part, and the positive electrode output piece and the negative electrode output piece can be directly connected with the connector in the avoidance part, thereby omitting an additional connection copper bar, reducing the cost and simplifying the process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a battery pack breaking unit provided in an embodiment of the present utility model;

fig. 2 is a schematic top view of a battery pack breaking unit provided by an embodiment of the present utility model;

fig. 3 is a partially enlarged perspective view of a battery pack breaking unit provided in an embodiment of the present utility model;

fig. 4 is a partially enlarged perspective view illustrating a battery pack breaking unit according to an embodiment of the present utility model before the battery pack breaking unit is assembled in a battery pack;

fig. 5 is a partially enlarged perspective view illustrating a battery pack breaking unit according to an embodiment of the present utility model after the battery pack breaking unit is assembled to a battery pack.

Reference numerals illustrate:

the battery pack breaking unit 10, the base 11, the upper cover 12, the side wall 111 of the base 11, the side wall 121 of the upper cover 12, the accommodating chamber 110, the component 20, the notch 110A, the positive electrode output member 21, the negative electrode output member 22, the enclosure surface 1101, the main positive relay 23, the main negative relay 24, the protective cover 30, the hook 31, the bayonet 1211, the accommodating case 40, the side wall 41 of the accommodating case 40, the connector 50, the first connecting leg 51, the second connecting leg 52, the connecting hole 211, the bottom wall 42 of the accommodating case 40, and the fixing leg 112.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the utility model. In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

In the related art, the BDU is connected with the connector through the connecting copper bar, and the connecting copper bar is required to be additionally manufactured by the design, so that the production and management cost is improved. Meanwhile, the connecting copper bars are required to be installed in the reserved space, so that space waste is caused. In addition, the copper bar connection part is also required to be manufactured with a corresponding insulation protective sleeve to be isolated so as to meet related protection standards, so that the production cost is further improved, and the process steps are also increased. The utility model provides the following technical scheme aiming at the technical problems.

As shown in fig. 1 to 3, fig. 1 is a perspective view of a battery pack breaking unit according to an embodiment of the present utility model, fig. 2 is a top view of the battery pack breaking unit according to the embodiment of the present utility model, and fig. 3 is a partially enlarged perspective view of the battery pack breaking unit according to the embodiment of the present utility model.

The utility model provides a battery pack breaking unit 10, wherein the battery pack breaking unit 10 comprises a base 11 and an upper cover 12, the base 11 and the upper cover 12 are covered to form a containing cavity 110, a component 20 is arranged in the containing cavity 110, and the base 11 is provided with a avoidance part; wherein, components 20 include positive pole output piece 21 and negative pole output piece 22, positive pole output piece 21 and negative pole output piece 22 extend from holding chamber 110 to keep away the position portion.

In the embodiment of the utility model, the base 11 is provided with the avoidance part, so that one ends of the positive electrode output piece 21 and the negative electrode output piece 22 in the component 20 extend into the avoidance part, and the positive electrode output piece 21 and the negative electrode output piece 22 can be directly connected with the connector 50 in the avoidance part, thereby omitting an extra connection copper bar, reducing the cost and simplifying the process.

The avoidance portion forms an avoidance space so that the positive electrode output member 21 and the negative electrode output member 22 can be accommodated in the space at a portion outside the accommodation chamber 110. The avoidance portion may be a notch or the like, but is not limited thereto. The size of the avoidance portion may be adjusted according to the sizes of the portions of the positive electrode output member 21 and the negative electrode output member 22 located outside the accommodating chamber 110, so that the avoidance portion matches the size of the object avoided by the avoidance portion. For example, when the size of the portions of the positive electrode output member 21 and the negative electrode output member 22 located outside the accommodation chamber 110 is small, the avoidance portion may be provided only on the base 11. And when the size of the portions of the positive electrode output member 21 and the negative electrode output member 22 located outside the accommodating chamber 110 is large, the avoidance portions may be provided on the base 11 and the upper cover 12 at the same time. The utility model is not limited in this regard.

In one embodiment, as shown in fig. 1 to 3, the side wall 111 of the base 11 and the side wall 121 of the upper cover 12 are recessed toward the accommodating cavity 110 to form a notch 110A, and the positive electrode output member 21 and the negative electrode output member 22 extend from the accommodating cavity 110 to the notch 110A.

In one embodiment, as shown in fig. 1 to 3, the battery pack breaking unit 10 includes a base 11 and an upper cover 12, the base 11 and the upper cover 12 are covered to form a receiving chamber 110, and the component 20 is placed in the receiving chamber 110. The base 11 comprises a bottom wall and side walls arranged around the edges of the bottom wall, the bottom wall of the base 11 being intended to carry the components 20. The upper cover 12 includes a top wall and side walls provided around the edges of the top wall, and the upper cover 12 is detachably connected with the base 11. As shown in fig. 1 and 3, the side wall 121 of the upper cover 12 may be provided with a coupling hook, the side wall 111 of the base 11 may be provided with a coupling lug, and the coupling hook and the coupling lug may be engaged with each other, thereby detachably coupling the upper cover 12 and the base 11. The side wall 111 of the base 11 is recessed toward the accommodating chamber 110, the side wall 121 of the upper cover 12 is recessed toward the accommodating chamber 110, and a notch 110A is formed by the recesses of the upper cover 12 and the base 11.

A variety of components 20 are disposed within the receiving chamber 110, for example, the components 20 may include a pre-charge relay, a current sensor, and the like. The pre-charge relay may be used to protect the high voltage circuit from transient high current surges when the system is powered up. The current sensor is used to measure and calculate the battery pack capacity.

The component 20 includes a positive output member 21 and a negative output member 22, and the positive output member 21 and the negative output member 22 can be connected to the connector 50 for outputting a voltage. As shown in fig. 1 to 3, one end of the positive electrode output member 21 extends to the notch 110A, and one end of the negative electrode output member 22 extends to the notch 110A. In order to avoid short-circuiting of the positive output member 21 and the negative output member 22, the positive output member 21 and the negative output member 22 may be spatially offset from each other, i.e., the positive output member 21 and the negative output member 22 may be disposed at a distance from each other.

In one embodiment, the positive output member 21 may be a soft copper bar, and the negative output member 22 may be a soft copper bar, and due to the soft copper bar having a certain flexibility, the positive output member 21 and the negative output member 22 may be properly deformed to adjust the mounting position, so that the normal assembly with the connector 50 under the influence of the manufacturing tolerance and the mounting tolerance may be ensured. It should be noted that the positive electrode output member 21 and the negative electrode output member 22 may be other types of connection members as long as they can satisfy the functions of current and voltage transmission. The present utility model is not limited in the types of the positive electrode output member 21 and the negative electrode output member 22.

In one embodiment, as shown in fig. 1 to 3, the notch 110A is U-shaped, and the side wall 111 of the base 11 and the side wall 121 of the upper cover 12 form a U-shaped enclosure 1101, and an opening of the U-shape faces a side facing away from the accommodating cavity 110. The U-shaped notch 110A may provide room for the connector 50 to be inserted. It should be noted that, the shape of the notch 110A may be other shapes, such as a circle, an ellipse, a triangle, etc., and the shape of the notch 110A may be adaptively adjusted according to the shape of the component 20 placed in the accommodating cavity 110.

The shape of the notch 110A is not limited by the present utility model.

In one embodiment, as shown in fig. 2, the component 20 further includes a main positive relay 23 and a main negative relay 24, and the main positive relay 23 and the main negative relay 24 are disposed in the accommodating chamber 110. One end of the positive electrode output piece 21 is connected with the main positive relay 23, and the other end of the positive electrode output piece 21 extends to the notch 110A; one end of the negative output member 22 is connected to the main negative relay 24, and the other end of the negative output member 22 extends to the notch 110A. Through the arrangement, the main positive relay 23 and the main negative relay 24 can be directly electrically connected into the notch 110A without connecting by means of additional connecting copper bars, so that the original connecting copper bars are omitted, the material cost is saved, and the process steps are simplified.

In one embodiment, as shown in fig. 1 and 3, the battery pack breaking unit 10 further includes a protective cover 30, and the protective cover 30 is detachably connected with the upper cover 12. The protective cover 30 corresponds to the notch 110A, and the protective cover 30 covers at least a part of the positive electrode output member 21 and a part of the negative electrode output member 22. The protective cover 30 is made of insulating material, and the protective cover 30 is used for shielding the positive electrode output piece 21 and the negative electrode output piece 22, so that the battery pack breaking unit 10 can meet relevant protection standards, such as an IPXXB protection level.

Further, in order to improve the protection effect of the protection cover 30, the area of the protection cover 30 may be slightly smaller than the area of the notch 110A, so as to ensure that the positive output member 21 and the negative output member 22 are not exposed after the battery pack circuit breaking unit 10 is assembled with the battery pack, so as to meet the protection requirement of the IPXXB.

In one embodiment, the opposite sides of the protective cover 30 are provided with hooks 31, opposite sides of the side wall 121 of the upper cover 12 are provided with bayonets 1211, and the hooks 31 are engaged with the bayonets 1211, so as to realize the detachable connection of the protective cover 30 and the upper cover 12. Specifically, the hook 31 is an elastic member, when the protective cover 30 is mounted, the protective cover 30 can be aligned to the notch 110A, so that the hook 31 moves down to the position of the bayonet 1211, and the hook 31 is deformed by extrusion to retract, so that the hook 31 is engaged with the bayonet 1211. When the protective cover 30 needs to be detached, the hook 31 can be relatively pressed towards the inner side direction of the protective cover 30, so that the hook 31 is deformed by pressing and is retracted, the hook 31 is separated from the bayonet 1211, and then the protective cover 30 is lifted, so that the protective cover 30 and the upper cover 12 are detached.

As shown in fig. 4 and 5, the present utility model also provides a battery pack including the housing case 40 and the battery pack disconnection unit 10 described above. It should be noted that fig. 4 and 5 show only a part of the housing case 40, thereby explaining the assembled relationship of the battery pack and the battery pack breaking unit 10. The battery pack should also include a battery cell module (not shown) and other functional modules (not shown).

As shown in fig. 4 and 5, fig. 4 is a partially enlarged perspective view of the battery pack circuit breaking unit 10 according to the embodiment of the present utility model before being assembled in a battery pack; fig. 5 is a partially enlarged perspective view of the battery pack circuit breaking unit 10 according to the embodiment of the present utility model after being assembled to a battery pack. The battery pack includes a receiving case 40, and the battery pack breaking unit 10 is placed in the receiving case 40. The receiving case 40 includes a bottom wall and a side wall, and the side wall 41 of the receiving case 40 is provided with a connector 50, and one end of the connector 50 passes through the side wall and extends into the receiving cavity inside the receiving case 40.

As shown in fig. 4 and 5, one end of the connector 50 located outside the receiving case 40 may be provided with a plurality of through holes for fixing connection, and the connector 50 may be connected with the side wall 41 of the receiving case 40 using screws (not shown), thereby achieving the fixing of the connector 50 to the side wall 41 of the receiving case 40. The notch 110A provided in the battery pack breaking unit 10 is close to the connector 50, and one end of the connector 50 located in the accommodating case 40 extends into the notch 110A, and the connector 50 is connected with the positive electrode output member 21 of the battery pack breaking unit 10 and the negative electrode output member 22 of the battery pack breaking unit 10 in the notch 110A, respectively. For example, the connector 50 may be a high voltage connector 50, and the connector 50 may be of other types. The utility model is not limited in the type of connector 50.

Through the above arrangement, the battery pack breaking unit 10 can be close to the connector 50 better, and the positive electrode output piece 21, the negative electrode output piece 22 and the connector 50 can be shielded by the protective cover 30 at the same time, so that the protective requirement of the IPXXB at the joint is met without additionally manufacturing an insulating sleeve for protection, and the material can be saved and the cost can be reduced.

In one embodiment, as shown in fig. 4, the end of the positive output member 21 located at the notch 110A is provided with a connection hole 211, the end of the negative output member 22 located at the notch 110A is provided with a connection hole 211, and the front projections of the connection hole 211 on the bottom wall 42 of the housing case 40 are not overlapped, so that the battery pack breaking unit 10 can be mounted more conveniently. The end of the connector 50 located in the accommodating cavity is provided with a first connecting pin 51 and a second connecting pin 52, the first connecting pin 51 and the second connecting pin 52 are provided with through holes corresponding to the connecting holes 211, the first connecting pin 51 is in threaded connection with the positive electrode output piece 21 through the connecting holes 211, and the second connecting pin 52 is in threaded connection with the negative electrode output piece 22 through the connecting holes 211. Fig. 1 to 3 show a case where the positive electrode output member 21 is provided with a bolt, and a case where the negative electrode output member 22 is not provided with a bolt, thereby explaining the manner of the connection hole 211 and the bolt. When it is necessary to assemble the battery pack breaking unit 10 with the housing case 40, the positive electrode output member 21 and the negative electrode output member 22 may be both connected using bolts. It should be noted that, the first connection pin 51 may be connected to the positive output member 21 by a screw, a bolt, or other manners commonly used in the art, and the second connection pin 52 may be connected to the negative output member 22 by a screw, a bolt, or other manners commonly used in the art, which is not limited by the present utility model.

In one embodiment, as shown in fig. 4 and 5, the side wall 111 of the base 11 of the battery pack breaking unit 10 is provided with a fixing leg 112, the fixing leg 112 being disposed near the bottom wall, and the fixing leg 112 being connectable with the bottom wall 42 of the housing case 40. For example, the fixing legs 112 may be screw-coupled with the bottom wall 42 of the receiving case 40. Specifically, the fixing leg 112 is provided with a threaded hole, the bottom wall 42 of the accommodating case 40 is provided with a corresponding threaded hole, and the fixing leg 112 is fixed on the bottom wall 42 of the accommodating case 40 through the threaded hole by using a screw or a bolt. Through the above arrangement, the battery pack disconnection unit 10 can be made more stable, and the battery pack disconnection unit 10 is prevented from moving, thereby improving the connection reliability of the battery pack disconnection unit 10 and the connector 50. In order to further improve the connection reliability of the fixing pins 112, 2 fixing pins 112 may be disposed on opposite sides of the battery pack breaking unit 10, respectively, and the disposition of the fixing pins 112 may be adjusted according to the spatial arrangement of the receiving case 40, which is not limited in the present utility model.

In all the above embodiments, the battery pack breaking unit 10 is tightly combined with the connector 50, the connection copper bars additionally provided in the related art are omitted, and the space utilization rate of the battery pack is improved, so that the battery pack can be applied in a space-compact scene. Meanwhile, the installation steps are simplified, and the production efficiency is improved.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims

1. A battery pack disconnection unit, comprising:

the base (11) and the upper cover (12) are covered to form a containing cavity (110), a component (20) is arranged in the containing cavity (110), and the base (11) is provided with a avoidance part;

the component (20) comprises a positive output piece (21) and a negative output piece (22), and the positive output piece (21) and the negative output piece (22) extend from the accommodating cavity (110) to the avoidance part.

2. The battery pack disconnection unit according to claim 1, wherein a side wall (111) of the base (11) and a side wall (121) of the upper cover (12) are recessed toward the accommodating chamber (110) side to form a notch (110A), and the positive electrode output member (21) and the negative electrode output member (22) extend from the accommodating chamber (110) to the notch (110A).

3. The battery pack disconnection unit according to claim 2, wherein the positive output member (21) and the negative output member (22) are spatially offset from each other within the notch (110A).

4. The battery pack disconnection unit according to claim 2, wherein the positive output member (21) is a soft copper bar and the negative output member (22) is a soft copper bar.

5. The battery pack disconnection unit according to claim 2, wherein the notch (110A) is U-shaped, and the side wall (111) of the base (11) and the side wall (121) of the upper cover (12) constitute a peripheral surface (1101) of the U-shape.

6. The battery pack disconnection unit according to claim 2, wherein the component (20) comprises a main positive relay (23) and a main negative relay (24); one end of the positive electrode output piece (21) is connected with the main positive relay (23), and the other end of the positive electrode output piece (21) extends to the notch (110A); one end of the negative electrode output piece (22) is connected with the main negative relay (24), and the other end of the negative electrode output piece (22) extends to the notch (110A).

7. The battery pack shutdown unit according to any of claims 2 to 6, wherein the battery pack shutdown unit (10) further comprises a protective cover (30), the protective cover (30) being detachably connected to the upper cover (12), the protective cover (30) corresponding to the notch (110A), the protective cover (30) shielding at least a portion of the positive output (21) and a portion of the negative output (22).

8. The battery pack disconnection unit according to claim 7, wherein opposite sides of the protective cover (30) are provided with hooks (31), opposite sides of the side wall (121) of the upper cover (12) are provided with bayonets (1211), and the hooks (31) are engaged with the bayonets (1211).

9. Battery pack, characterized in that the battery pack comprises a containing shell (40) and a battery pack breaking unit (10) according to any one of claims 2 to 8, the battery pack breaking unit (10) is located in the containing shell (40), a connector (50) is arranged on a side wall (41) of the containing shell (40), a notch (110A) of the battery pack breaking unit (10) is close to the connector (50), the connector (50) is located at one end of the containing shell (40) and extends into the notch (110A), and the connector (50) is connected with a positive output piece (21) of the battery pack breaking unit (10) and a negative output piece (22) of the battery pack breaking unit (10) in the notch (110A) respectively.

10. The battery pack according to claim 9, wherein the positive electrode output member (21) and the negative electrode output member (22) are provided with connecting holes (211) at one end of the notch (110A), respectively, and the orthographic projections of the connecting holes (211) on the bottom wall of the accommodating case (40) do not overlap; the connector (50) is provided with a first connecting pin (51) and a second connecting pin (52), the first connecting pin (51) is in threaded connection with the positive electrode output piece (21) through the connecting hole (211), and the second connecting pin (52) is in threaded connection with the negative electrode output piece (22) through the connecting hole (211).

11. The battery pack according to claim 9, wherein a side wall (111) of the base (11) of the battery pack breaking unit (10) is provided with a fixing leg (112), the fixing leg (112) being connected with the bottom wall (42) of the housing case (40).