Battery energy distribution unit and battery pack

Abstract

The utility model relates to the technical field of power batteries, in particular to a battery energy distribution unit and a battery pack. The battery energy distribution unit comprises a cover body, a box body and an installation plate, the cover body covers the box body, a containing cavity is formed in the cover body and the box body, the installation plate is detachably installed in the containing cavity, an installation area is arranged on the installation plate, and the installation area is located in the containing cavity. The installation area is used for installing at least one of a relay, a shunt, a fuse and a pre-charging resistor. Compared with the traditional mode that the components are directly assembled in the box body, the mounting area is arranged on the mounting plate, and the components are mounted on the mounting plate, so that the mounting difficulty of the components can be reduced, and the assembly precision of the components can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries, and in particular relates to a battery energy distribution unit and a battery pack. Background Art

[0002] The Battery Energy Distribution Unit (BDU), also known as the Battery Disconnect Unit, is an important component in the high-voltage circuit of new energy vehicles.

[0003] The BDU module includes an upper cover, a lower shell and a plurality of components. In the prior art, generally all components are installed in the lower shell. However, when the components are directly assembled in the lower shell, there is a problem that the installation accuracy is difficult to control. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the problem that components are directly assembled in the lower shell in the prior art, and the installation precision is difficult to control, a battery energy distribution unit and a battery pack are provided.

[0005] In order to solve the above technical problems, on the one hand, an embodiment of the utility model provides a battery energy distribution unit, including a cover body, a box body and a mounting plate, the cover body is covered on the box body and forms a accommodating cavity inside the two, the mounting plate is detachably installed in the accommodating cavity, and an installation area is provided on the mounting plate, and the installation area is used to install at least one of a relay, a shunt, a fuse and a pre-charging resistor.

[0006] Optionally, the installation area includes a first installation area, a second installation area, a third installation area and a fourth installation area, the first installation area, the second installation area, the third installation area and the fourth installation area are arranged in sequence along the first direction, the first installation area and the third installation area are used to install relays, the second installation area is used to install shunts, and the fourth installation area is used to install fuses. The fuse is used to protect the safety of the battery pack, including a main fuse and an auxiliary fuse. In this embodiment, the main fuse is mounted on the mounting plate through a bracket, and the fourth installation area is provided with a bracket mounting position. In this embodiment, the relay can be divided into a high-voltage main positive / main negative relay, a pre-charge relay, a fast charge relay, a PTC heating relay, an air conditioning relay, etc. according to needs. In this embodiment, the first installation area and the second installation area are provided, and the first installation area and the second installation area both include a plurality of installation grooves, and a plurality of relays can be installed on the mounting plate, thereby ensuring the installation accuracy of all relays in the BDU. In this embodiment, the installation grooves of the first installation area and the second installation area are machined sinks, and the mounting plate is a hollow plate, and the sink is not connected to the hollow structure inside the hollow plate. Of course, a through hole communicating with the hollow structure may be provided in the sink. In this embodiment, the shunt may be installed in the second installation area by screws, and the corresponding relay may be installed in the first installation area or the second installation area by screws. In this embodiment, the mounting plate is a square plate, preferably a rectangular plate, and the first direction is preferably the length direction of the square plate.

[0007] Optionally, the installation area also includes a fifth installation area, the fifth installation area is used to install the pre-charging resistor, the second installation area and the fifth installation area are arranged at intervals along the second direction, and the first direction and the second direction are not collinear and parallel. In this embodiment, the fifth installation area is arranged at intervals from the first installation area and the third installation area. In this embodiment, the pre-charging resistor is used to protect the battery system from power-on transient impact, and the fifth installation area is a limited groove structure. In this embodiment, the limited groove structure is connected to the hollow inside the mounting plate.

[0008] Optionally, the first installation area includes a plurality of first installation slots, which are arranged in sequence along the first direction; the third installation area includes a plurality of second installation slots, which are arranged in sequence along the first direction; the first installation slots and the second installation slots are both used to install relays. Preferably, the number of the first installation slots is two, and the number of the second installation slots is two. One relay or another number of relays can be installed in the first installation slot or the second installation slot.

[0009] Optionally, the mounting plate has a first side surface and a second side surface opposite to each other along the thickness direction thereof, the first side surface is provided with the first mounting area, the second mounting area, the third mounting area and the fourth mounting area, the second side surface is provided with a sixth mounting area, and the sixth mounting area is used to mount a fuse. In this embodiment, components are mounted on both sides of the mounting plate in the thickness direction. The fuse includes a main fuse and an auxiliary fuse, the main fuse is mounted on the first side surface, and the auxiliary fuse is mounted on the second side surface. The auxiliary fuse can be a fuse or other device.

[0010] Optionally, a hollow structure is provided inside the mounting plate for reducing the weight of the mounting plate. In this embodiment, the weight of the mounting plate can be reduced by providing the hollow structure. At the same time, the mounting plate is preferably an aluminum plate, which can enhance the strength of the mounting plate.

[0011] Optionally, both ends of the hollow structure have openings. In this embodiment, the mounting plate is connected between the cover body and the box body, and the openings at both ends of the hollow structure are connected to the external environment of the box body, which is convenient for heat dissipation of components on the mounting plate. At the same time, a support bar is provided in the hollow structure to play a supporting role.

[0012] Optionally, the mounting plate is connected between the cover body and the box body, the mounting plate and the cover body form a first accommodating space, the mounting plate and the box body form a second accommodating space, and the first accommodating space and the second accommodating space form the accommodating cavity.

[0013] Optionally, the mounting plate is an aluminum plate; and / or, a first mounting hole is provided on the mounting plate, a second mounting hole adapted to the first mounting hole is provided on the box body, and the first mounting hole and the second mounting hole are suitable for installing screws. In this embodiment, the mounting plate is detachably connected to the cover body and the box body by screws.

[0014] According to the battery energy distribution unit of this embodiment, by setting a mounting area on the mounting plate, at least one of the relay, shunt, fuse and pre-charging resistor is first mounted on the mounting plate, and then the mounting plate equipped with the above components is mounted in the accommodating cavity. Compared with the traditional method of directly assembling components in the box body, the utility model sets a mounting area on the mounting plate and mounts the components on the mounting plate, which can reduce the difficulty of installing the components and improve the assembly accuracy of the components.

[0015] On the other hand, an embodiment of the present invention provides a battery pack, comprising the above-mentioned battery energy distribution unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a battery energy distribution unit provided by an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a mounting plate without components provided by an embodiment of the utility model;

[0018] Figure 3 This is a structural schematic diagram of a mounting plate equipped with components provided by an embodiment of the utility model from a first perspective;

[0019] Figure 4 It is a structural schematic diagram of a mounting plate equipped with components from a second viewing angle provided by an embodiment of the utility model.

[0020] The reference numerals in the specification are as follows:

[0021] 100, relay; 200, shunt; 300, fuse; 400, pre-charge resistor;

[0022] 1. Cover body; 2. Box body; 3. Mounting plate; 4. First mounting area; 5. Second mounting area; 6. Third mounting area; 7. Fourth mounting area; 8. Fifth mounting area; 9. Sixth mounting area; 31. First side surface; 32. Second side surface; 32. Hollow structure; 41. First mounting groove; 61. Second mounting groove; 321. Opening. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] like Figures 1 to 4 As shown, an embodiment of the utility model provides a battery energy distribution unit, including a cover body 1, a box body 2 and a mounting plate 3, the cover body 1 covers the box body 2 and forms a receiving cavity inside the two, the mounting plate 3 is detachably mounted in the receiving cavity, and an installation area is provided on the mounting plate 3, and the installation area is used to install at least one of the relay 100, the shunt 200, the fuse 300 and the pre-charging resistor 400. In this embodiment, the relay 100, the shunt 200, the fuse 300 and the pre-charging resistor 400 are all installed on the mounting plate 3, and the assembly position (installation area) on the mounting plate 3 is processed by CNC machine with high precision. During installation, the relay 100, the shunt 200 and the pre-charging resistor 400 are first locked on the profile (mounting plate 3), and then the copper bus and the fuse 300 are installed on the mounting plate 3.

[0025] In one embodiment, the installation area includes a first installation area 4, a second installation area 5, a third installation area 6 and a fourth installation area 7, and the first installation area 4, the second installation area 5, the third installation area 6 and the fourth installation area 7 are arranged in sequence along the first direction. The first installation area 4 and the third installation area 6 are used to install the relay 100, the second installation area 5 is used to install the shunt 200, and the fourth installation area 7 is used to install the fuse 300. The fuse 300 is used to protect the safety of the battery pack, including a main fuse and an auxiliary fuse. In this embodiment, the main fuse is installed on the mounting plate 3 through a bracket, and the fourth installation area 7 is provided with a bracket installation position. In this embodiment, the relay 100 can be divided into a high-voltage main positive / main negative relay, a pre-charge relay, a fast charge relay, a PTC heating relay, an air conditioning relay, etc. according to needs. In this embodiment, the first installation area 4 and the second installation area 5 are provided, and the first installation area 4 and the second installation area 5 both include multiple installation slots, and multiple relays 100 can be installed on the mounting plate 3, thereby ensuring the installation accuracy of all relays 100 in the BDU. In this embodiment, the mounting grooves of the first mounting area 4 and the second mounting area 5 are machined recessed grooves, the mounting plate 3 is a hollow plate, and the recessed grooves are not connected to the hollow structure 32 inside the hollow plate. Of course, a through hole connected to the hollow structure 32 can be provided in the recessed groove. In this embodiment, the diverter 200 can be installed in the second mounting area 5 by screws, and the corresponding relay 100 can be installed in the first mounting area 4 or the second mounting area 5 by screws. In this embodiment, the mounting plate 3 is a square plate, preferably a rectangle, and the first direction is preferably the length direction of the square plate.

[0026] In one embodiment, the installation area also includes a fifth installation area 8, which is used to install a pre-charging resistor 400, and the second installation area 5 and the fifth installation area 8 are arranged at intervals along the second direction, and the first direction and the second direction are not collinear and parallel. In this embodiment, the second direction is the width direction of the mounting plate 3, and the first direction is perpendicular to the second direction. The fifth installation area 8 is arranged at intervals with the first installation area 4 and the third installation area 6. In this embodiment, the pre-charging resistor 400 is used to protect the battery system from transient impact when it is powered on, and the fifth installation area 8 is a limited groove structure. In this embodiment, the limited groove structure is connected to the hollow inside the mounting plate 3.

[0027] In one embodiment, the first installation area 4 includes a plurality of first installation grooves 41, which are arranged in sequence along the first direction; the third installation area 6 includes a plurality of second installation grooves 61, which are arranged in sequence along the first direction; the first installation grooves 41 and the second installation grooves 61 are both used to install the relay 100. Preferably, the number of the first installation grooves 41 is two, and the number of the second installation grooves 61 is two. One relay 100 can be installed in the first installation groove 41 or the second installation groove 61, or other number of relays 100 can be installed.

[0028] In one embodiment, the mounting plate 3 has a first side surface 31 and a second side surface 32 opposite to each other along the thickness direction thereof, the first side surface 31 is provided with a first mounting area 4, a second mounting area 5, a third mounting area 6 and a fourth mounting area 7, the second side surface 32 is provided with a sixth mounting area 9, and the sixth mounting area 9 is used to mount the fuse 300. In this embodiment, components are mounted on both sides of the mounting plate 3 in the thickness direction. The fuse 300 includes a main fuse and an auxiliary fuse, the main fuse is mounted on the first side surface 31, and the auxiliary fuse is mounted on the second side surface 32. The auxiliary fuse may be a fuse or other device.

[0029] In one embodiment, a hollow structure 32 is provided inside the mounting plate 3 for reducing the weight of the mounting plate 3. In this embodiment, the weight of the mounting plate 3 can be reduced by providing the hollow structure 32. At the same time, the mounting plate 3 is preferably an aluminum plate, which can enhance the strength of the mounting plate 3.

[0030] In one embodiment, both ends of the hollow structure 32 have openings 321. In this embodiment, the mounting plate 3 is connected between the cover body 1 and the box body 2, the first side 31 of the mounting plate 3 is in contact with the cover body 1, the second side 32 of the mounting plate 3 is in contact with the box body 2, and the openings 321 at both ends of the hollow structure 32 are connected to the external environment of the box body 2, so that it is convenient to dissipate heat for the components on the mounting plate 3. At the same time, a support bar is provided in the hollow structure 32 to play a supporting role.

[0031] In one embodiment, the mounting plate 3 is connected between the cover body 1 and the box body 2, the mounting plate 3 and the cover body 1 form a first accommodating space, the mounting plate 3 and the box body 2 form a second accommodating space, and the first accommodating space and the neglected second accommodating space form an accommodating cavity.

[0032] In one embodiment, the mounting plate 3 is an aluminum plate; and / or, a first mounting hole is provided on the mounting plate 3, and a second mounting hole adapted to the first mounting hole is provided on the box body 2, and screws are suitable for mounting in the first mounting hole and the second mounting hole. In this embodiment, the mounting plate 3 is detachably connected to the cover body 1 and the box body 2 by screws.

[0033] According to the battery energy distribution unit of this embodiment, by setting a mounting area on the mounting plate 3, at least one of the relay 100, the shunt 200, the fuse 300 and the pre-charging resistor 400 is first installed on the mounting plate 3, and then the mounting plate 3 equipped with the above components is installed in the accommodating cavity. Compared with the traditional method of directly assembling components in the box body 2, the utility model sets a mounting area on the mounting plate 3 and installs the components on the mounting plate 3, which can reduce the difficulty of installing the components and improve the assembly accuracy of the components.

[0034] In addition, an embodiment of the present invention provides a battery pack, comprising the battery energy distribution unit of the above embodiment.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery energy distribution unit, characterized in that: It includes a cover body, a box body and a mounting plate, wherein the cover body covers the box body and forms a receiving cavity inside the box body and the mounting plate is detachably mounted in the receiving cavity, and an mounting area is provided on the mounting plate, and the mounting area is used to install at least one of a relay, a shunt, a fuse and a pre-charging resistor.

2. The battery energy distribution unit according to claim 1, characterized in that: The installation area includes a first installation area, a second installation area, a third installation area and a fourth installation area. The first installation area, the second installation area, the third installation area and the fourth installation area are arranged in sequence along a first direction. The first installation area and the third installation area are used to install relays, the second installation area is used to install shunts, and the fourth installation area is used to install fuses.

3. The battery energy distribution unit according to claim 2, characterized in that: The mounting area further includes a fifth mounting area, the fifth mounting area is used to mount a pre-charging resistor, the second mounting area and the fifth mounting area are spaced apart along a second direction, and the first direction and the second direction are not collinear and are not parallel.

4. The battery energy distribution unit according to claim 2, characterized in that: The first installation area includes a plurality of first installation grooves, which are arranged in sequence along the first direction; the third installation area includes a plurality of second installation grooves, which are arranged in sequence along the first direction; the first installation grooves and the second installation grooves are both used to install relays.

5. The battery energy distribution unit according to claim 2, characterized in that: The mounting plate has a first side surface and a second side surface opposite to each other along its thickness direction. The first side surface is provided with the first mounting area, the second mounting area, the third mounting area and the fourth mounting area. The second side surface is provided with a sixth mounting area for mounting a fuse.

6. The battery energy distribution unit according to claim 1, characterized in that: The mounting plate is provided with a hollow structure for reducing the weight of the mounting plate.

7. The battery energy distribution unit according to claim 6, characterized in that: Both ends of the hollow structure are open.

8. The battery energy distribution unit according to claim 1, characterized in that: The mounting plate is connected between the cover body and the box body, the mounting plate and the cover body form a first accommodating space, the mounting plate and the box body form a second accommodating space, and the first accommodating space and the second accommodating space form the accommodating cavity.

9. The battery energy distribution unit according to claim 1, characterized in that: The mounting plate is an aluminum plate; and / or, The mounting plate is provided with a first mounting hole, the box body is provided with a second mounting hole adapted to the first mounting hole, and the first mounting hole and the second mounting hole are suitable for installing screws.

10. A battery pack, characterized in that: A battery energy distribution unit comprising the battery energy distribution unit according to any one of claims 1 to 9.

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