Battery energy distribution unit and battery pack

Abstract

The embodiment of the utility model provides a battery energy distribution unit and battery pack, including: shell, electrical subassembly and insulating protective plate, shell includes shell base and shell cover body, shell base is shell structure with one end open setting, shell cover body is provided in the open end of shell base, the shell base and shell cover body form inside hollow electrical accommodation chamber between shell base and shell cover body, the electrical accommodation chamber is equipped with the insulating protective plate. A plurality of copper bar lapping platforms are arranged in the electrical accommodating cavity, a plurality of high-voltage connecting ports are formed in the shell cover body, and a low-voltage plugging port is formed in the shell base; the electrical components comprise a first relay, a second relay, a third relay, a fourth relay, a pre-charging relay, a low-voltage connector and a fuse, are connected through a plurality of high-voltage copper bars, are fixed at one ends of the high-voltage copper bars on the copper bar lapping platform, and are in high-voltage connection with an external copper bar through a high-voltage connector; and the low-voltage connector is arranged at the low-voltage plugging port and is in electric signal connection with an external matched connector through the low-voltage plugging port.

Description

Technical Field

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

[0002] The battery energy distribution unit is an important component in the high-voltage circuit of electric vehicles. It controls the power-on and power-off processes, pre-charging process, and charging process of the high-voltage electrical circuit in new energy vehicles. The characteristic parameters of the battery energy distribution unit have an important impact on the service life, control strategy, and high-voltage safety of the whole vehicle. However, in the prior art, the high-voltage and low-voltage lines in the battery energy distribution unit controller are intricate, and there are significant safety risks in current conduction and its electrical performance. At the same time, the unreasonable internal layout of the battery energy distribution unit controller will also result in a relatively large space occupied by the overall structure, which is not conducive to the integrated design of the power battery box. Therefore, there is an urgent need to design a battery energy distribution unit with a reasonable internal layout. Summary of the Utility Model

[0003] This application provides a battery energy distribution unit and a battery pack with a reasonable internal layout and high integration.

[0004] In a first aspect, according to an embodiment of the present application, there is provided a battery energy distribution unit, which includes:

[0005] A housing, the housing includes a housing base and a housing cover. The housing base is a housing structure with an open end, the housing cover is fixedly arranged at the open end of the housing base, an internally hollow electrical accommodation cavity is formed between the housing base and the housing cover, and a plurality of copper row lapping platforms are arranged in the electrical accommodation cavity. A plurality of high-voltage connection ports communicating with the electrical accommodation cavity are arranged on the housing cover, and the arrangement positions of the plurality of high-voltage connection ports respectively correspond to the arrangement positions of each copper row lapping platform. A low-voltage plug-in port communicating with the electrical accommodation cavity is arranged on the housing base;

[0006] An electrical component, the electrical component is arranged in the electrical accommodation cavity, and the electrical component includes a first relay, a second relay, a third relay, a fourth relay, a pre-charge relay, a low-voltage connector, and a fuse. The electrical components are connected by a plurality of high-voltage copper rows. One end of the high-voltage copper row fixed on the copper row lapping platform is connected to an external copper row through the high-voltage connection port. The low-voltage connector is arranged at the low-voltage plug-in port and is electrically connected to an external matching connector through the low-voltage plug-in port;

[0007] An insulation protection board, the insulation protection board is arranged in the electrical accommodation cavity, and the insulation protection board is arranged between two coaxially extending and adjacent high-voltage copper rows.

[0008] In some embodiments of the present application, the shell base includes a bottom plate, a first side wall, a second side wall, a third side wall, and a fourth side wall. The first side wall, the second side wall, the third side wall, and the fourth side wall are connected end to end in sequence, and the first side wall, the second side wall, the third side wall, and the fourth side wall are respectively connected to the four sides of the bottom plate, forming a shell structure with one end open.

[0009] On the inner surface of the second side wall, a first copper bar lapping platform, a second copper bar lapping platform, and a third copper bar lapping platform are arranged in sequence along a first direction. The first copper bar lapping platform, the second copper bar lapping platform, and the third copper bar lapping platform all extend along a second direction. The first copper bar lapping platform and the second copper bar lapping platform are of a stepped structure. The low platforms of the first copper bar lapping platform and the second copper bar lapping platform are respectively connected to the inner surface of the second side wall, and the high platforms of the first copper bar lapping platform and the second copper bar lapping platform are both arranged away from the second side wall. The third copper bar lapping platform is on the same horizontal plane as the low platforms of the first copper bar lapping platform and the second copper bar lapping platform in a third direction.

[0010] On the inner surface of the third side wall, a fourth copper bar lapping platform and a fifth copper bar lapping platform are arranged. The first copper bar lapping platform, the fourth copper bar lapping platform, and the fifth copper bar lapping platform are arranged in sequence along the second direction. The low-voltage pluggable port is arranged on the third side wall and is located on one side of the fifth copper bar lapping platform away from the fourth copper bar lapping platform. The high platforms of the first copper bar lapping platform, the second copper bar lapping platform, the fourth copper bar lapping platform, and the fifth copper bar lapping platform are on the same horizontal plane in the third direction.

[0011] One high-voltage copper bar is fixedly connected to each of the low platform of the first copper bar lapping platform, the high platform of the first copper bar lapping platform, the low platform of the second copper bar lapping platform, the high platform of the second copper bar lapping platform, the third copper bar lapping platform, the fourth copper bar lapping platform, and the fifth copper bar lapping platform.

[0012] Wherein, the first direction is a direction perpendicular to the first side wall, and the first direction, the second direction, and the third direction are perpendicular to each other pairwise.

[0013] In some embodiments of the present application, the third sidewall is a stepped wall. The third sidewall includes a first step portion and a second step portion. The first step portion is connected to the second sidewall, and the second step portion is connected to the fourth sidewall. Moreover, the distance between the first step portion and the first sidewall is less than the distance between the second step portion and the first sidewall. The fourth copper busbar lapping platform, the fifth copper busbar lapping platform, and the low-voltage pluggable port are all disposed on the first step portion.

[0014] The first relay, the second relay, and the pre-charge relay are arranged in sequence along the second direction between the first step portion and the first sidewall, and the first relay, the second relay, and the pre-charge relay are located on one side of the first sidewall. The third relay and the fourth relay are arranged along the first direction between the second step portion and the first sidewall, and the third relay is in the same straight line as the first relay and the second relay in the second direction. The pre-charge relay is located between the second relay and the third relay. The fuse extends along the first direction between the second step portion and the first sidewall, and the fuse is disposed close to the fourth sidewall.

[0015] In some embodiments of the present application, a sunken mounting groove is respectively provided on the first sidewall and the first step portion. Each sunken mounting groove is recessed towards the electrical accommodation cavity. A first mounting plate is provided in the sunken mounting groove. A first mounting hole is provided on the first mounting plate. Moreover, the sunken mounting groove on the side of the first mounting plate close to the housing cover body is rectangular parallelepiped-shaped, and the sunken mounting groove on the side of the first mounting plate away from the housing cover body is frustum-shaped. The included angle between the sidewall of the sunken mounting groove and the bottom plate is an obtuse angle or a right angle.

[0016] The sunken mounting groove provided on the first sidewall and the sunken mounting groove provided on the first step portion are not on the same straight line in the first direction. The sunken mounting groove provided on the first sidewall is located between the second relay and the pre-charge relay, and the sunken mounting groove provided on the first step portion is located between the fourth copper busbar lapping platform and the fifth copper busbar lapping platform.

[0017] In some embodiments of the present application, two clamping blocks are provided on the inner surface of the first step portion. The two clamping blocks are respectively located on both sides of the low-voltage pluggable port. The low-voltage connector is fixed between the two clamping blocks.

[0018] In some embodiments of the present application, a second mounting plate is provided on the outer surface of the second side wall. A second mounting hole is provided on the second mounting plate. The second side wall located on the side of the second mounting plate away from the housing cover body is obliquely connected to the bottom plate, and the included angle between the second side wall and the bottom plate is an obtuse angle.

[0019] In some embodiments of the present application, an avoidance groove is provided in the middle of the fourth side wall. The installation position of the fuse corresponds to the installation position of the avoidance groove.

[0020] On the fourth side walls located on both sides of the avoidance groove, a third mounting plate is respectively provided. A third mounting hole is provided on the third mounting plate. The fourth side wall located on the side of the third mounting plate away from the housing cover body is obliquely connected to the bottom plate, and the included angle between the fourth side wall and the bottom plate is an obtuse angle.

[0021] In some embodiments of the present application, one ends of the first side wall and the third side wall connected to the second side wall are both stepped. The low platforms of the third copper busbar lapping platform, the first copper busbar lapping platform, and the second copper busbar lapping platform are matched with the heights of the low-order surfaces of the first side wall and the third side wall. The high platforms of the first copper busbar lapping platform and the second copper busbar lapping platform are matched with the heights of the high-order surfaces of the first side wall and the third side wall.

[0022] One end of the housing cover body close to the second side wall is stepped and is matched with the shapes of the first side wall and the third side wall.

[0023] In some embodiments of the present application, both the housing base and the housing cover body are integrally formed by stamping.

[0024] In a second aspect, according to an embodiment of the present application, a battery pack is provided, including: the battery energy distribution unit described in the first aspect.

[0025] The innovative points of the embodiments of the present application include but are not limited to the following:

[0026] 1. In this embodiment, the trapezoidal sinking effect design of the sinking installation groove, the second mounting plate, and the third mounting plate is one of the innovative points of the embodiments of the present application. It can make the battery energy distribution unit produce a sinking installation effect after installation, reduce the overall height of the battery energy distribution unit, save the space in the height direction of the battery pack, further improve the integration of the battery box. At the same time, the settings of the sinking installation groove, the second mounting plate, and the third mounting plate are more convenient for the bolted fixation of the battery energy distribution unit.

[0027] 2. In this embodiment, the highly integrated external interface design and the design of the low-voltage connector are one of the innovative points of the embodiments of the present application. The low-voltage connector is used to realize the signal transmission and communication between the battery energy distribution unit and the outside, and reasonably transfer the internal low-voltage wiring harness. It has a high degree of integration, improving the installation convenience of the battery energy distribution unit and the integration degree of the battery box.

[0028] 3. In this embodiment, the setting of the insulation protection board is one of the innovative points of the embodiments of the present application. The high-voltage copper bar is protected by the insulation protection board, which improves the creepage distance on the premise of ensuring a compact installation space, enhancing the use reliability and high integration degree of the battery energy distribution unit.

[0029] The beneficial effects of the embodiments of the present application are as follows:

[0030] Through the highly integrated external interface design and the reasonable transfer of the internal low-voltage wiring harness, the occupied space of the battery energy distribution unit controller is reduced, the installation convenience is improved, and the use safety of the battery energy distribution unit controller is ensured through the insulation protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of a battery energy distribution unit provided by the embodiments of the present application;

[0033] Figure 2 It is a schematic structural diagram of a battery energy distribution unit without an assembled shell cover provided by the embodiments of the present application;

[0034] Figure 3 It is a schematic structural diagram of a shell cover of a battery energy distribution unit provided by the embodiments of the present application;

[0035] Figure 4 It is a schematic structural diagram of a shell base of a battery energy distribution unit provided by the embodiments of the present application;

[0036] Description of reference numerals: 1 is the outer shell, 11 is the shell base, 111 is the low-voltage plug-in port, 112 is the bottom plate, 113 is the first side wall, 114 is the second side wall, 115 is the third side wall, 1151 is the first step portion, 1152 is the second step portion, 116 is the fourth side wall, 12 is the shell cover, 121 is the high-voltage connection port, 122 is the sunken avoidance hole, 13 is the electrical accommodation cavity, 14 is the copper busbar lapping platform, 141 is the first copper busbar lapping platform, 1411 is the low platform of the first copper busbar lapping platform 141, 1412 is the high platform of the first copper busbar lapping platform 141, 142 is the second copper busbar lapping platform, 1421 is the low platform of the second copper busbar lapping platform 142, 1422 is the high platform of the second copper busbar lapping platform 142, 143 is the third copper busbar lapping platform, 144 is the fourth copper busbar lapping platform, 145 is the fifth copper busbar lapping platform, 15 is the sunken installation groove, 16 is the first mounting plate, 161 is the first mounting hole, 17 is the second mounting plate, 171 is the second mounting hole, 18 is the avoidance groove, 19 is the third mounting plate, 191 is the third mounting hole, 2 is the electrical component, 21 is the first relay, 22 is the second relay, 23 is the third relay, 24 is the fourth relay, 25 is the pre-charge relay, 26 is the low-voltage connector, 261 is the clamping block, 27 is the fuse, 28 is the high-voltage copper busbar, 3 is the insulation protection plate. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of the present application and the accompanying drawings are intended to cover non-exclusive inclusion. For example, including a series of structures does not limit to the listed structures, but optionally further includes structures not listed, or optionally further includes other components inherent to these structures.

[0039] The embodiments of the present application disclose a battery energy distribution unit. The following will be described in detail respectively.

[0040] Figure 1 – Figure 3 shows a battery energy distribution unit provided according to an embodiment of the present application. As Figure 1 – Figure 3As shown in the figure, the battery energy distribution unit mainly includes: a housing 1, an electrical component 2, and an insulation protection plate 3. The housing 1 provides an installation and fixing position for the electrical component 2 and the insulation protection plate 3, and is used to protect the electrical component 2 of the battery energy distribution unit. The insulation protection plate 3 is used to enhance insulation protection, ensure the electrical safety of the battery energy distribution unit, and improve the reliability of product use.

[0041] Specifically, as Figure 1 , Figure 2 and Figure 4 shown, the housing 1 includes a housing base 11 and a housing cover 12. The housing base 11 is the main part of the housing 1, which is a housing structure with an open end at one side, and is used to bear the gravity of each part of the electrical component 2. The housing cover 12 is fixedly arranged at the open end of the housing base 11. Thus, by assembling the housing cover 12 on the housing base 11, the housing 1 forms an internally hollow electrical accommodation cavity 13 to provide an accommodation space for the electrical component 2 and the insulation protection plate 3. Both the electrical component 2 and the insulation protection plate 3 are arranged in the electrical accommodation cavity 13. In the electrical accommodation cavity 13 of the embodiment of the present application, a plurality of copper row latching platforms 14 are arranged for the fixed connection of the high-voltage copper row 28 in the electrical component 2. At the same time, a plurality of high-voltage connection ports 121 are arranged on the housing cover 12. Each high-voltage connection port 121 communicates with the electrical accommodation cavity 13, and the arrangement positions of the plurality of high-voltage connection ports 121 respectively correspond to the arrangement positions of each copper row latching platform 14. Thus, through the arrangement of the plurality of high-voltage connection ports 121, a highly integrated external interface design of the battery energy distribution unit is realized, so that some wiring terminals of the electrical component 2 are exposed relative to the housing 1, and further, the electrical component 2 of the battery energy distribution unit can transmit signals with external devices. In addition, a low-voltage pluggable port 111 is also arranged on the housing base 11. The low-voltage pluggable port 111 communicates with the electrical accommodation cavity 13 to connect the electrical components accommodated inside the electrical accommodation cavity 13 with external devices.

[0042] Such as Figure 2 and Figure 4As shown in the figure, the electrical component 2 in the embodiment of the present application includes a first relay 21, a second relay 22, a third relay 23, a fourth relay 24, a pre-charge relay 25, a low-voltage connector 26, and a fuse 27. Through the setting of the low-voltage connector 26, the battery energy distribution unit reasonably transfers the internal low-voltage wiring harness. The low-voltage connector 26 is arranged at the low-voltage plug-in port 111 and is electrically connected to the externally matched connector through the low-voltage plug-in port 111. The electrical components 2 are connected by a plurality of high-voltage copper bars 28. Denote the wiring terminal of the electrical component 2 that needs to be connected to the external device as the external connection terminal. The other end of the high-voltage copper bar 28 connected to one end of the external connection terminal is fixed on the copper bar overlapping platform 14 and is connected to the external copper bar through the high-voltage connection port 121 for high-voltage connection, thereby realizing the connection with the external device. In addition, to minimize the overall occupied space of the battery energy distribution unit as much as possible, the electrical accommodation cavity 13 of the housing 1 is narrow, and the setting distances of some high-voltage copper bars 28 are relatively close. In the present application, an insulating protection plate 3 is arranged between two adjacent high-voltage copper bars 28 extending in the same direction, that is, isolation treatment is performed on the exposed area of the high-voltage copper bar 28 to enhance insulation protection, increase the creepage distance in the narrow installation space, ensure the electrical safety of the battery energy distribution unit, improve the use safety, reliability and high integration of the product, and facilitate the compact design of the internal space layout of the battery energy distribution unit, ensuring that the internal space layout is compact and does not affect the creepage distance. It should be noted that, on the premise of ensuring electrical safety, the insulating protection plate 3 can also be arranged only between the key high-voltage copper bars 28 to reduce costs.

[0043] In some embodiments, such as Figure 2 and Figure 4As shown, the shell base 11 includes a bottom plate 112, a first side wall 113, a second side wall 114, a third side wall 115, and a fourth side wall 116. The first side wall 113, the second side wall 114, the third side wall 115, and the fourth side wall 116 are connected end to end in sequence, and the first side wall 113, the second side wall 114, the third side wall 115, and the fourth side wall 116 are respectively connected to the four sides of the bottom plate 112, thereby forming a shell structure with an open end. The multiple copper busbar lapping platforms 14 include a first copper busbar lapping platform 141, a second copper busbar lapping platform 142, a third copper busbar lapping platform 143, a fourth copper busbar lapping platform 144, and a fifth copper busbar lapping platform 145. Among them, the first copper busbar lapping platform 141, the second copper busbar lapping platform 142, and the third copper busbar lapping platform 143 are arranged in sequence along the first direction on the inner surface of the second side wall 114, and the first copper busbar lapping platform 141, the second copper busbar lapping platform 142, and the third copper busbar lapping platform 143 all extend along the second direction. At the same time, the first copper busbar lapping platform 141 and the second copper busbar lapping platform 142 are of a two-level stepped structure. The first copper busbar lapping platform 141 includes a low platform 1411 and a high platform 1412, the second copper busbar lapping platform 142 includes a low platform 1421 and a high platform 1422. The low platform 1411 of the first copper busbar lapping platform 141 and the low platform 1421 of the second copper busbar lapping platform 142 are respectively connected to the inner surface of the second side wall 114, and the high platforms 1412 of the first copper busbar lapping platform 141 and the high platforms 1422 of the second copper busbar lapping platform 142 are all arranged away from the second side wall 114. Further, the third copper busbar lapping platform 143 is on the same horizontal plane as the low platform 1411 of the first copper busbar lapping platform 141 and the low platform 1421 of the second copper busbar lapping platform 142 in the third direction, so that the copper busbar lapping platforms 14 close to the second side wall 114 are all set at the same height, and the overall appearance is more neat and beautiful. The fourth copper busbar lapping platform 144 and the fifth copper busbar lapping platform 145 are arranged on the inner surface of the third side wall 115. The first copper busbar lapping platform 141, the fourth copper busbar lapping platform 144, and the fifth copper busbar lapping platform 145 are arranged in sequence along the second direction. The low-voltage pluggable port 111 is arranged on the third side wall 115 and is located on the side of the fifth copper busbar lapping platform 145 away from the fourth copper busbar lapping platform 144. The high platforms 1412 of the first copper busbar lapping platform 141, the high platforms 1422 of the second copper busbar lapping platform 142 are on the same horizontal plane as the fourth copper busbar lapping platform 144 and the fifth copper busbar lapping platform 145 in the third direction, so that the copper busbar lapping platforms 14 away from the second side wall 114 are all set at the same height, and the overall appearance is more neat and beautiful.One end of a plurality of high-voltage copper bars 28 connected to the external connection terminals is respectively fixed on the low platform 1411 of the first copper bar lapping platform 141, the high platform 1412 of the first copper bar lapping platform 141, the low platform 1421 of the second copper bar lapping platform 142, the high platform 1422 of the second copper bar lapping platform 142, the third copper bar lapping platform 143, the fourth copper bar lapping platform 144, and the fifth copper bar lapping platform 145, and realizes high-voltage connection with the external copper bar through the corresponding high-voltage connection port 121.

[0044] In this application, the first direction is the direction perpendicular to the plane where the first side wall 113 is located. The first direction, the second direction, and the third direction are perpendicular to each other pairwise. However, it should be noted that the perpendicularity in this application is not absolute perpendicularity and can be 90°±10°. Similarly, the parallelism in this application is not absolute parallelism and can be 180°±10°.

[0045] Furthermore, as Figure 2 and Figure 4 shown, the third side wall 115 is a stepped wall, which includes a first step portion 1151 and a second step portion 1152. Both the first step portion 1151 and the second step portion 1152 are parallel to the first side wall 113. The first step portion 1151 is connected to the second side wall 114, and the second step portion 1152 is connected to the fourth side wall 116. The first step portion 1151 and the second step portion 1152 are connected by a connection wall perpendicular to the first side wall 113, and the distance between the first step portion 1151 and the first side wall 113 is less than the distance between the second step portion 1152 and the first side wall 113. The fourth copper bar lapping platform 144, the fifth copper bar lapping platform 145, and the low-voltage plug-in port 111 are all arranged on the first step portion 1151.

[0046] In some other embodiments, as Figure 2 and Figure 4As shown, the electrical components 2 are all accommodated in the electrical accommodation cavity 13. The specific installation and arrangement of each component are as follows: The first relay 21, the second relay 22, the third relay 23, and the fourth relay 24 are all fixedly installed on the bottom plate 112 only by two bolts, and the two bolts of each relay are arranged diagonally, which not only ensures the fixing stability of the relay but also reduces the overall installation space of the electrical component 2. Further, the first relay 21, the second relay 22, and the pre-charge relay 25 are arranged in sequence along the second direction between the first step portion 1151 and the first side wall 113, and the first relay 21, the second relay 22, and the pre-charge relay 25 are arranged close to the first side wall 113. The third relay 23 and the fourth relay 24 are arranged along the first direction between the second step portion 1152 and the first side wall 113, and the third relay 23 is in the same straight line as the first relay 21 and the second relay 22 in the second direction. The pre-charge relay 25 is located between the second relay 22 and the third relay 23; the fuse 27 is installed on the bottom plate 112 through a fixing bracket, and it extends along the first direction between the second step portion 1152 and the first side wall 113, and the fuse 27 is arranged close to the fourth side wall 116; the low-voltage connector 26 is fixedly installed at the low-voltage plug and unplug port 111 through two clamping blocks 261 arranged on the inner surface of the first step portion 1151 and located on both sides of the low-voltage plug and unplug port 111 respectively.

[0047] In a specific embodiment, such as Figure 2 and Figure 4As shown, a sunken mounting groove 15 is respectively provided on the first side wall 113 and the first step portion 1151. Each sunken mounting groove 15 is recessed towards the electrical accommodation cavity 13. A first mounting plate 16 is arranged in the sunken mounting groove 15. A first mounting hole 161 is provided on the first mounting plate 16. The housing 1 is mounted at a specified position of the battery box through two relatively arranged first mounting holes 161. And the sunken mounting groove 15 on the side of the first mounting plate 16 close to the housing cover 12 is in a cuboid shape, and the sunken mounting groove 15 on the side of the first mounting plate 16 away from the housing cover 12 is in a frustum shape. The included angle between one side wall of the sunken mounting groove 15 and the bottom plate 112 is an obtuse angle, and the included angles between the other two side walls and the bottom plate 112 are right angles. With such a design, on the one hand, the sunken mounting groove 15 with a frustum shape below can make the battery energy distribution unit produce a sunken mounting effect after installation, thereby reducing the overall height of the battery energy distribution unit, avoiding the waste of the bottom space of the installation environment of the battery energy distribution unit, and further improving the integration degree of the battery box. On the other hand, the sunken mounting groove 15 with a cuboid shape above can minimize the occupation of the internal space of the electrical accommodation cavity 13 as much as possible. At the same time, when the battery energy distribution unit is assembled into the battery box, the sunken mounting groove 15 recessed towards the electrical accommodation cavity 13 can also avoid interference between the bolt round head and the housing base 11 during bolt installation. Further, the sunken mounting groove 15 provided on the first side wall 113 and the sunken mounting groove 15 provided on the first step portion 1151 are on different straight lines in the first direction to enhance the stability of the fixed installation of the battery energy distribution unit in the first direction. And the sunken mounting groove 15 provided on the first side wall 113 is located between the second relay 22 and the pre-charge relay 25, and the sunken mounting groove 15 provided on the first step portion 1151 is located between the fourth copper row overlapping platform 144 and the fifth copper row overlapping platform 145 to ensure that the setting of the sunken mounting groove 15 will not affect the layout of the electrical components 2 and minimize the overall occupied space as much as possible. Correspondingly, as Figure 1 and Figure 3 shown, sunken avoidance holes 122 corresponding to the two sunken mounting grooves 15 are provided on the housing cover 12.

[0048] In addition, as Figure 1 、 Figure 2 and Figure 4As shown, the housing 1 is further provided with a second mounting plate 17 and a third mounting plate 19. Among them, the second mounting plate 17 is arranged on the outer surface of the second side wall 114, and a second mounting hole 171 is arranged on the second mounting plate 17 for the fixed installation of the overall battery energy distribution unit. At the same time, the second side wall 114 located on the side of the second mounting plate 17 away from the housing cover 12 is obliquely connected to the bottom plate 112, and the included angle between the second side wall 114 and the bottom plate 112 is an obtuse angle, showing a trapezoidal design, so as to produce a sinking installation effect after the battery energy distribution unit is installed, reduce the overall height of the battery energy distribution unit, and further improve the integration of the battery box. An avoidance groove 18 is arranged in the middle of the fourth side wall 116, and the installation position of the fuse 27 corresponds to the installation position of the avoidance groove 18. A third mounting plate 19 is arranged on each of the fourth side walls 116 on both sides of the avoidance groove 18. Through the design of the avoidance groove 18, while providing a setting position for the third mounting plate 19, the overall occupied space of the housing 1 is reduced as much as possible. A third mounting hole 191 is arranged on the third mounting plate 19 for the fixed installation of the overall battery energy distribution unit. At the same time, the fourth side wall 116 located on the side of the third mounting plate 19 away from the housing cover 12 is obliquely connected to the bottom plate 112, and the included angle between the fourth side wall 116 and the bottom plate 112 is an obtuse angle, showing a trapezoidal design, so as to produce a sinking installation effect after the battery energy distribution unit is installed, reduce the overall height of the battery energy distribution unit, and further improve the integration of the battery box. Further, the first mounting plate 16, the second mounting plate 17 and the third mounting plate 19 are on the same horizontal plane in the third direction, so that the overall battery energy distribution unit sinks to the same horizontal plane after installation. Of course, the heights of the first mounting plate 16, the second mounting plate 17 and the third mounting plate 19 can also be designed according to the specific installation conditions inside the battery box to ensure that the overall battery energy distribution unit sinks to the same horizontal plane after installation. The present application does not limit this.

[0049] In another specific embodiment, as Figure 2 and Figure 4 shown, one ends of the first side wall 113 and the third side wall 115 connected to the second side wall 114 are both in a two-level stepped shape, and the heights of the low platforms 1411 of the third copper row overlapping platform 143, the first copper row overlapping platform 141 and the low platforms 1421 of the second copper row overlapping platform 142 match the heights of the lower step surfaces of the first side wall 113 and the third side wall 115, and the heights of the high platforms 1412 of the first copper row overlapping platform 141 and the high platforms 1422 of the second copper row overlapping platform 142 match the heights of the higher step surfaces of the first side wall 113 and the third side wall 115. Correspondingly, as Figure 1 and Figure 3As shown, one end of the shell cover 12 close to the second side wall 114 is stepped and matches the shapes of the first side wall 113 and the third side wall 115, so that the other end of the high-voltage copper bar 28 with one end connected to the external connection terminal is exposed outside the shell 1.

[0050] In a specific implementation process, as Figure 1 shown, both the shell base 11 and the shell cover 12 are integrally formed by stamping, enabling accurate positioning of each mounting hole, accurately aligning the bolt connection positions, and avoiding interference problems during the installation process.

[0051] The embodiment of the present application also discloses a battery pack, including a battery energy distribution unit, and this battery energy distribution unit is the battery energy distribution unit provided in the above embodiment. Specifically, as Figure 1 – Figure 3 shown, this battery energy distribution unit mainly includes a shell 1, an electrical component 2, and an insulation protection plate 3. Its structure and principle are the same as those in the above embodiment. For a brief description, reference can be made to the corresponding content in the embodiment of the above battery energy distribution unit, and details will not be repeated here.

[0052] In summary, the present application discloses a battery energy distribution unit and a battery pack. Through a highly integrated external interface design and a reasonable transfer of internal low-voltage wiring harnesses, the occupied space of the battery energy distribution unit controller is reduced, the installation convenience is improved, and the use safety of the battery energy distribution unit controller is ensured through an insulation protection device.

[0053] Those of ordinary skill in the art can understand that the drawings are only schematic diagrams of an embodiment, and the components in the drawings are not necessarily essential for implementing the present invention. It should also be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0054] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" shall 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 components. 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. In addition, in the description of the embodiments of the present application, 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. 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 cannot be understood as a limitation to the present utility model.

[0055] Finally, it should be noted that the above embodiments are only specific embodiments of the present utility model, used to illustrate the technical solutions of the present utility model, rather than limiting it. The protection scope of the present utility model is not limited thereto. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present utility model can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or make equivalent replacements for some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope defined by the claims.

Claims

1. A battery energy distribution unit, characterized in that: The battery energy distribution unit comprises: A shell, the shell comprising a shell base and a shell cover, the shell base being a shell structure with an opening at one end, the shell cover being fixedly arranged at the open end of the shell base, an internal hollow electrical accommodation cavity being formed between the shell base and the shell cover, and a plurality of copper bar lap platforms being arranged in the electrical accommodation cavity, a plurality of high-voltage connection ports communicating with the electrical accommodation cavity being arranged on the shell cover, the arrangement positions of the plurality of high-voltage connection ports respectively corresponding to the arrangement positions of each of the copper bar lap platforms, and a low-voltage plug-in port communicating with the electrical accommodation cavity being arranged on the shell base; An electrical component, the electrical component is arranged in the electrical accommodating cavity, and the electrical component includes a first relay, a second relay, a third relay, a fourth relay, a pre-charged relay, a low-voltage connector and a fuse. The electrical components are connected through a plurality of high-voltage copper bars, one end of the high-voltage copper bar fixed on the copper bar lap platform is connected to an external copper bar through the high-voltage connection port for high-voltage connection, and the low-voltage connector is arranged at the low-voltage plug-in port, and is connected to an external matching connector for electrical signal through the low-voltage plug-in port; An insulating protection plate is arranged in the electrical accommodating cavity, and the insulating protection plate is arranged between two adjacent high-voltage copper bars extending in the same direction.

2. The battery energy distribution unit according to claim 1, characterized in that: The shell base includes a bottom plate, a first side wall, a second side wall, a third side wall, and a fourth side wall, wherein the first side wall, the second side wall, the third side wall, and the fourth side wall are sequentially connected end to end, and the first side wall, the second side wall, the third side wall, and the fourth side wall are respectively connected to the four sides of the bottom plate to form a shell structure with one end open. The inner surface of the second side wall is sequentially provided with a first copper bar overlapping platform, a second copper bar overlapping platform and a third copper bar overlapping platform along the first direction. The first copper bar overlapping platform, the second copper bar overlapping platform and the third copper bar overlapping platform are all extended along the second direction, and the first copper bar overlapping platform and the second copper bar overlapping platform are of a stepped structure. The low platform of the first copper bar overlapping platform and the low platform of the second copper bar overlapping platform are respectively connected to the inner surface of the second side wall, and the high platform of the first copper bar overlapping platform and the high platform of the second copper bar overlapping platform are both arranged away from the second side wall. The third copper bar overlapping platform and the low platform of the first copper bar overlapping platform and the low platform of the second copper bar overlapping platform are on the same horizontal plane in the third direction. A fourth copper bar overlapping platform and a fifth copper bar overlapping platform are arranged on the inner surface of the third side wall. The first copper bar overlapping platform, the fourth copper bar overlapping platform and the fifth copper bar overlapping platform are arranged in sequence along the second direction. The low-voltage plug port is arranged on the third side wall and is located on a side of the fifth copper bar overlapping platform away from the fourth copper bar overlapping platform. The high platform of the first copper bar overlapping platform and the high platform of the second copper bar overlapping platform are on the same horizontal plane as the fourth copper bar overlapping platform and the fifth copper bar overlapping platform in the third direction. The low platform of the first copper bar lapping platform, the high platform of the first copper bar lapping platform, the low platform of the second copper bar lapping platform, the high platform of the second copper bar lapping platform, the third copper bar lapping platform, the fourth copper bar lapping platform and the fifth copper bar lapping platform are respectively fixedly connected with one of the high-voltage copper bars. The first direction is a direction perpendicular to the first side wall, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The battery energy distribution unit according to claim 2, characterized in that: The third side wall is a stepped wall, and the third side wall includes a first step portion and a second step portion, the first step portion is connected to the second side wall, the second step portion is connected to the fourth side wall, and the distance between the first step portion and the first side wall is smaller than the distance between the second step portion and the first side wall, the fourth copper bar lap platform, the fifth copper bar lap platform and the low-voltage plug port are all arranged on the first step portion, The first relay, the second relay and the pre-charge relay are arranged in sequence between the first step portion and the first side wall along the second direction, and the first relay, the second relay and the pre-charge relay are located on one side of the first side wall. The third relay and the fourth relay are arranged between the second step portion and the first side wall along the first direction, and the third relay is on the same straight line as the first relay and the second relay in the second direction, the pre-charge relay is located between the second relay and the third relay, and the fuse is extended between the second step portion and the first side wall along the first direction, and the fuse is arranged close to the fourth side wall.

4. The battery energy distribution unit according to claim 3, characterized in that: A sinking installation groove is respectively arranged on the first side wall and the first step portion, each of the sinking installation grooves is concavely arranged toward the electrical accommodating cavity, a first mounting plate is arranged in the sinking installation groove, a first mounting hole is arranged on the first mounting plate, and the sinking installation groove located on the side of the first mounting plate close to the shell cover is in a rectangular parallelepiped shape, and the sinking installation groove located on the side of the first mounting plate away from the shell cover is in a trapezoidal shape, and the angle between the side wall of the sinking installation groove and the bottom plate is an obtuse angle or a right angle, The sunken mounting groove arranged on the first side wall and the sunken mounting groove arranged on the first step portion are on different straight lines in the first direction, and the sunken mounting groove arranged on the first side wall is located between the second relay and the pre-charging relay, and the sunken mounting groove arranged on the first step portion is located between the fourth copper busbar overlapping platform and the fifth copper busbar overlapping platform.

5. The battery energy distribution unit according to claim 3, characterized in that: Two card blocks are arranged on the inner surface of the first step portion. The two card blocks are respectively located on both sides of the low-voltage plug-in port, and the low-voltage connector is fixed between the two card blocks.

6. The battery energy distribution unit according to claim 2, characterized in that: A second mounting plate is arranged on the outer surface of the second side wall, a second mounting hole is arranged on the second mounting plate, and the second side wall located on the side of the second mounting plate away from the shell cover body is obliquely connected to the bottom plate, and the angle between the second side wall and the bottom plate is an obtuse angle.

7. The battery energy distribution unit according to claim 2, characterized in that: A avoidance groove is provided in the middle of the fourth side wall, and the setting position of the fuse corresponds to the setting position of the avoidance groove. A third mounting plate is respectively provided on the fourth side walls on both sides of the avoidance groove, and a third mounting hole is provided on the third mounting plate. The fourth side wall located on the side of the third mounting plate away from the shell cover body is obliquely connected to the bottom plate, and the angle between the fourth side wall and the bottom plate is an obtuse angle.

8. The battery energy distribution unit according to claim 2, characterized in that: The ends of the first side wall and the third side wall connected to the second side wall are both stepped, and the heights of the third copper bar lap platform, the low platform of the first copper bar lap platform, and the low platform of the second copper bar lap platform match the heights of the low-step surfaces of the first side wall and the third side wall, and the heights of the high platform of the first copper bar lap platform and the high platform of the second copper bar lap platform match the heights of the high-step surfaces of the first side wall and the third side wall. One end of the shell cover body close to the second side wall is stepped and matches the shapes of the first side wall and the third side wall.

9. The battery energy distribution unit according to claim 1, characterized in that: The shell base and the shell cover are integrally stamped and formed.

10. A battery pack, characterized in that: include: A battery energy distribution unit as claimed in any one of claims 1 to 9.

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