High-voltage connector supporting structure and battery pack

Abstract

The utility model provides a high-voltage connector supporting structure and a battery pack. The utility model relates to a high-voltage connector supporting structure, which is used for supporting and protecting a connecting structure between a wiring terminal of a high-voltage connector and a battery pack busbar. The high-voltage connector supporting structure comprises a shell formed by detachably folding a plurality of side plates, the shell is provided with a cavity due to folding of the side plates; the shell is formed on the high-voltage connector, so that the wiring terminal is exposed in the cavity; the side face of the shell is provided with a plurality of windows, and the positions of the windows correspond to the wiring ends of the wiring terminals so that busbars connected to the wiring terminals can pass through the windows. According to the utility model, the stability and the electrical safety of the connection structure between the high-voltage connector and the busbar can be effectively improved, and the occurrence of the condition of torsion of the copper bar lead is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive power batteries, and in particular to a high-voltage connector support structure. The utility model also relates to a battery pack including the high-voltage connector support structure. Background Art

[0002] The high-voltage connector is a bridge between the battery pack and the vehicle power system. It mainly plays the role of energy transmission. It can transmit high-voltage electricity from the battery pack to the motor, inverter, DC / DC converter, air compressor, etc., to ensure the power supply required for vehicle operation. In addition, the high-voltage connector also plays the role of signal control and overload protection. It can interact with the vehicle control unit through the battery management system to transmit the battery status. When overload, short circuit, abnormal temperature rise, etc. are detected, the circuit will be quickly cut off to protect the vehicle occupants and the battery pack.

[0003] The high-voltage connector is electrically connected to the battery module through the busbar, and the copper busbar conductors of the busbar are fixed to the wiring terminals of the high-voltage connector by bolts. In actual use, it is found that due to the soft texture and poor mechanical strength of the copper busbar conductors, when the high-voltage connector is bumped during the driving of the vehicle and the bolts become loose, the copper busbar conductors may be twisted and displaced. This phenomenon affects the stability of the electrical connection between the copper busbar conductors and the high-voltage connector. Moreover, the copper busbar conductors are completely exposed to the outside, which cannot meet the sealing protection requirements for equipment or personnel, and may pose electrical safety hazards.

[0004] It can be seen from the above prior art that the connection structure between the high-voltage connector and the busbar is currently poor in stability and has certain electrical safety hazards. Utility Model Content

[0005] In view of this, the utility model aims to provide a high-voltage connector support structure, which can effectively improve the stability and electrical safety of the connection structure between the high-voltage connector and the busbar.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] The utility model discloses a high-voltage connector support structure, which is used to support and protect the connection structure between the wiring terminal of the high-voltage connector and the battery pack bus bar. The high-voltage connector support structure includes:

[0008] A shell, wherein the shell is formed by detachably closing a plurality of side panels, and has a cavity due to the closing of the side panels;

[0009] The housing is formed on the high voltage connector so that the connection terminal is exposed in the cavity;

[0010] The side surface of the shell is provided with a plurality of windows, and the positions of the windows are corresponding to the wiring ends of the wiring terminals so as to allow the busbar connected to the wiring terminals to pass through.

[0011] Furthermore, the side plate comprises:

[0012] A bottom plate, the bottom plate being configured to be sleeved laterally and wrapped around the connection terminal;

[0013] The side plate is detachably fastened to the bottom plate to seal the connection terminal.

[0014] Furthermore, the side plate also includes:

[0015] A top plate is detachably fastened to the top of the bottom plate and the side plates.

[0016] Furthermore, the top plate protrudes outwards to form a yielding portion.

[0017] Furthermore, the side plate also includes:

[0018] A covering plate is formed by extending the side plate toward the window to cover the window; a weak portion is provided between the covering plate and the side plate.

[0019] Furthermore, it also includes a plurality of ribs fixed in the cavity; the cavity is divided by the ribs to form a plurality of accommodating spaces that are adapted to the thickness of the connecting terminals.

[0020] Furthermore, a mounting plate is fixedly arranged in the cavity; the mounting plate is arranged below the wiring terminal of the wiring terminal and connected to the rib plate;

[0021] The mounting plate is provided with a mounting hole, and the mounting hole is constructed as a threaded through hole concentric with the wiring hole of the wiring terminal.

[0022] Furthermore, a baffle is fixedly provided in the cavity, and the baffle is arranged between the wiring ends of two adjacent wiring terminals to separate the wiring ends of the two adjacent wiring terminals.

[0023] Furthermore, one end of the shell close to the high-voltage connector extends toward the high-voltage connector to form a wrapping portion, which wraps around the raised portion of the high-voltage connector to limit the shell itself.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] The high-voltage connector support structure and battery pack described in the utility model have a cavity inside the shell formed by closing and buckling a plurality of side panels. The connection structure between the terminal and the copper busbar conductor is exposed in the cavity in the shell, and the copper busbar conductor enters the cavity through the window opened on the side of the shell, and is fixed with the terminal to realize electrical connection. Due to the limiting effect of the multiple side panels on the high-voltage connector, the high-voltage connector and the copper busbar conductor will not be misaligned due to the bumps during the vehicle's movement, and have good structural stability. The shell cover made of insulating material is buckled on the outside of the high-voltage connector terminal, which supports and protects the connection structure between the terminal and the copper busbar conductor, so that it can meet the requirements of closed protection for equipment or personnel, effectively improve the stability and electrical safety of the connection structure between the high-voltage connector and the bus, and reduce the electrical safety hazards that may exist in actual application.

[0026] In addition, by configuring the side plate to be a combination of a bottom plate and a side plate, and configuring the bottom plate to be a structure that can be sleeved and wrapped around the terminal in the lateral direction, the stability of the housing to the terminal limiting structure can be further increased, so that the housing will not move along the length direction of the terminal. The side plate is wrapped around the terminal in coordination with the bottom plate, which ensures dustproof sealing while the assembly process is simple and easy to operate.

[0027] Secondly, by setting the side plate as a cover plate for covering the window, the side plate can cover the window where the copper busbar wire is not inserted, which is conducive to preventing dust and debris from entering the cavity inside the shell through the window, thereby affecting the connection structure between the terminal and the copper busbar wire of the busbar. A weak part is set between the edge of the cover plate and the side plate, which can facilitate the installer to disconnect the cover plate from the edge of the side plate along the weak part by breaking it, further simplifying the installation process.

[0028] Furthermore, by arranging ribs in the cavity, the cavity is divided into a plurality of accommodating spaces adapted to the thickness of the terminal block. The ribs increase the contact area with the terminal block, improve the supporting stability of the terminal block of the present application, and help avoid the phenomenon of twisting between the copper busbar conductor and the terminal block. The ribs can also increase the mechanical strength and compressive strength of the housing. By arranging a baffle in the cavity, a barrier can be formed between two adjacent terminals to avoid air discharge breakdown between two adjacent terminals. By arranging a mounting plate in the cavity, a limit can be provided for the fastening bolts fixing the busbar copper busbar conductor and the terminal block, further reducing the possibility of twisting of the connection structure between the copper busbar conductor and the terminal block.

[0029] In addition, the utility model also proposes a battery pack provided with the above-mentioned high-voltage connector support structure.

[0030] The battery pack described in the present invention has the same beneficial effects as the high-voltage connector support structure described above relative to the prior art, and will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0032] Figure 1 This is a structural schematic diagram of a high-voltage connector support structure in an embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the exploded structure of the high-voltage connector support structure in an embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the structure of the side plate in the embodiment of the present application;

[0035] Figure 4 Schematic diagram of the structure of the base plate in the embodiment of the present application.

[0036] Description of reference numerals:

[0037] 1. High voltage connector;

[0038] 101. Terminal blocks;

[0039] 2. Shell;

[0040] 201, side board;

[0041] 2011, bottom plate; 2012, side plate; 2013, top plate; 2014, clearance part; 2015, cover plate; 2016, weak part;

[0042] 202, cavity;

[0043] 2021, Accommodating Space;

[0044] 203, window; 204, package department;

[0045] 3. Ribs;

[0046] 4. Mounting plate;

[0047] 401, mounting hole;

[0048] 5. Baffle. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0050] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] Taking a high-voltage connector support structure and a battery pack described in the present invention as an example, the directional words used in the embodiments, such as "up, down, left, right, front, and back", are defined based on the up and down direction (also known as the height direction, or the Z direction of the battery pack), the left and right direction (also known as the width direction, or the Y direction of the battery pack), and the front and back direction (also known as the length direction, or the X direction of the battery pack). "Inside and outside" are defined based on the contour of the corresponding component. For example, "inside" and "outside" are defined based on the contour of the battery pack, and the side of the battery pack contour close to the middle of the battery pack is "inside", and the opposite is "outside".

[0052] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0053] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0054] Embodiment 1

[0055] The present embodiment relates to a high-voltage connector support structure, which adopts a shell composed of multiple side panels of insulating material that can be detachably closed, so that the shell cover is buckled on the top of the high-voltage connector, and the wiring terminals of the high-voltage connector and the copper bus wires of the bus are exposed in the cavity inside the shell, so as to form support and protection for the connection structure between the high-voltage connector and the copper bus wires, thereby achieving the purpose of improving the stability and electrical safety of the connection structure between the high-voltage connector and the bus.

[0056] In terms of overall structure, the high-voltage connector support structure of this embodiment includes a shell 2, which is composed of a plurality of side panels 201 that are closed by snap-fitting. The side panels 201 are made of a polymer material with good insulation, such as polyurethane engineering plastics, and are made by injection molding. The shell 2 has a cavity 202 due to the snap-fitting of the side panels 201. The connection portion between the terminal 101 of the high-voltage connector 1 and the copper busbar conductor is exposed in the cavity 202. The shell 2 supports and protects the connection portion between the terminal 101 and the copper busbar conductor. A window 203 is provided on the side panel 201, and the copper busbar conductor of the busbar can enter the cavity 202 in the shell 2 through the window 203.

[0057] As configured above, during the installation process of the high-voltage connector 1 and under normal working conditions, the shell 2 made of insulating material can provide sealing protection and support and limit the connection structure between the terminal block 101 and the busbar copper wire, thereby increasing the structural stability and electrical safety of the high-voltage connector 1.

[0058] Based on the above design concept, specifically, in this embodiment, refer to Figure 1 , Figure 2 and Figure 3, the side plate 201 includes a bottom plate 2011, a side plate 2012 and a top plate 2013. Among them, the bottom plate 2011, the side plate 2012 and the top plate 2013 are all made of polymer materials with good insulation properties, such as polyurethane engineering plastics, and are made in an integral injection molding manner. The bottom plate 2011 is constructed into a shape that can be set and wrapped on the terminal block 101 along the side. During the installation process, after the bottom plate 2011 slides along the side and is set on the terminal block 101, it can wrap the terminal block 101. At the same time, the terminal 101 also constitutes a limit for the bottom plate 2011 in other directions except the side. The side plate 2012 is buckled on one side of the bottom plate 2011. The edge of the bottom plate 2011 is provided with a plurality of clamping blocks by an integral injection molding manner, and a clamping ring is provided at a position corresponding to the position where the clamping block is set on the edge of the side plate 2012. When the side plate 2012 is buckled on the bottom plate 2011, the snap ring is sleeved and clamped on the block. The side plate 2012 buckled on the bottom plate 2011 plays a limiting role on the bottom plate 2011 along the lateral direction, cooperates with the bottom plate 2011 to form a shield for the wiring terminal 101, plays a role of leakage protection for personnel, and plays a role of sealing and dustproof for the wiring terminal 101. The edge of the top plate 2013 is also provided with a snap ring, and the position of the snap ring is corresponding to the position of the block on the bottom plate 2011. The top plate 2013 is buckled and closed on the top of the bottom plate 2011 and the side plate 2012. The snap ring on the top plate 2013 can be sleeved in the block on the bottom plate 2011 when the top plate 2013 is buckled on the top of the bottom plate 2011 and the side plate 2012, so as to form a limiting structure. The top plate 2013 blocks and protects the top opening of the structure formed by the bottom plate 2011 and the side plate 2012, which helps to prevent dust and debris from entering the cavity 202 of the shell 2 from the top.

[0059] Reference Figure 1 , Figure 2 and Figure 3 In order to reserve an installation position for the copper busbar conductors so that they can form an electrical connection structure with the wiring terminals 101 sealed in the housing 2, in this embodiment, a plurality of windows 203 are provided on the side plate 201 for the copper busbar conductors to pass through. In order to facilitate installation and reduce the difficulty of wiring, in this embodiment, windows 203 are provided on the upper part of the side plate 2012 and the side of the bottom plate 2011, and the specific positions of the windows 203 correspond to the positions of the wiring terminals of the wiring terminals 101 in the cavity 202. The shape of the window 203 should be consistent with the cross-sectional shape of the copper busbar conductors. On the premise of ensuring that the copper busbar conductors can pass smoothly, the size of the gap between the edge of the window 203 and the copper busbar conductors should be reduced to improve the sealing and protection of the housing 2. In this embodiment, the shape of the window 203 is set to be rectangular.

[0060] It should be noted that the opening of the window 203 on the upper part of the side plate 2012 and the side of the bottom plate 2011 is an adaptive adjustment for the purpose of facilitating wiring according to the distribution of the wiring parts of the wiring terminals 101. The window 203 in this embodiment can also be opened at any position on the side plate 201 according to other conditions and requirements, such as other types of terminals.

[0061] Reference Figure 1 , Figure 2 and Figure 3 In order to further enhance the protection of the connection part between the wiring terminal 101 and the copper busbar wire of the present application and improve the electrical safety of the high-voltage connector 1, in this embodiment, the side plate 201 further includes a cover plate 2015. The cover plate 2015 is formed by extending from the edge of the side plate 201 to the window 203. The setting position of the cover plate 2015 corresponds to the position of the window 203, and the shape of the cover plate 2015 is consistent with the opening shape of the window 203. The material of the cover plate 2015 should be the same as that of the side plate 201. The cover plate 2015 can cover the open window 203 in a non-connection state without the copper busbar wire, which is conducive to preventing dust and debris from entering the cavity 202 from the open window 203, thereby achieving the purpose of enhancing the protection of the connection part between the wiring terminal 101 and the copper busbar wire.

[0062] In order to improve the usability and reduce the difficulty of assembly operation, a weak portion 216 is provided at the connection portion between the cover plate 2015 and the side plate 201 provided with the cover plate 2015. The weak portion 216 can be a pre-grooved groove or a plurality of circular through holes equidistantly and parallelly distributed in the length direction of the cover plate 2015. The provision of the weak portion 216 can facilitate the installer to break the cover plate 2015 from the side plate 201 along the length direction of the cover plate 2015 without the aid of other tools. After breaking the cover plate 2015, wiring and installation operations can be performed, thereby achieving the purpose of improving the usability and reducing the difficulty of assembly operation.

[0063] Reference Figure 1 , Figure 2 and Figure 3 In order to improve the stability between the housing 2 and the high-voltage connector 1, a wrapping portion 204 is formed on the end of the housing 2 close to the high-voltage connector 1 and extends toward the high-voltage connector 1. The wrapping portion 204 is made of the same material as the side plate 201. In this embodiment, the wrapping portion 204 is formed on the edge of the bottom plate 2011 close to the high-voltage connector 1 by injection molding. The wrapping portion 204 wraps the protruding portion on the high-voltage connector 1, so that the protruding portion of the high-voltage connector 1 constitutes a limit to the housing 2, thereby achieving the purpose of improving stability.

[0064] Reference Figure 2 , Figure 3 and Figure 4 In order to improve the mechanical strength and bearing capacity of the housing 2 and further enhance the stability, in this embodiment, a rib 3 is provided in the cavity 202. The rib 3 is formed on the bottom plate 2011 in an integral injection molding manner along the direction perpendicular to the plane where the bottom plate 2011 is located, and extends in the direction of the side plate 2012. There are multiple ribs 3, and the cavity 202 is divided into multiple accommodating spaces 2021 due to the arrangement of the ribs 3. The size of the accommodating space 2021 is adapted to the thickness of the terminal 101. The terminal 101 abuts against the accommodating space 2021 formed by the ribs 3 and adapted to its own thickness. The ribs 3 further limit the terminal 101, increase the contact area between the housing 2 and the terminal 101, increase the mechanical strength and bearing capacity of the housing 2, and improve the stability between the housing 2 and the terminal 101.

[0065] Reference Figure 2 , Figure 3 and Figure 4 In order to facilitate the fixing of the connection structure between the busbar copper bar conductor and the terminal 101, in this embodiment, a mounting plate 4 is provided in the cavity 202. The number of mounting plates 4 is consistent with the number of the terminal 101, and the position of the mounting plate 4 in the cavity 202 is set below the terminal of the terminal 101. The mounting plate 4 is connected to the rib plate 3 and is formed on the bottom plate 2011 by injection molding. A mounting hole 401 is provided on the mounting plate 4. The mounting hole 401 is a circular through hole with a thread on the side wall. The diameter of the mounting hole 401 is consistent with the outer diameter of the bolt used to fix the busbar copper bar conductor and the terminal 101. The mounting hole 401 is concentrically arranged with the wiring hole on the terminal 101. When installing the present application, the bolt needs to be passed through the wiring hole of the terminal 101 and the copper bar conductor, and then passed through the mounting hole 401 and tightened on the mounting plate 4.

[0066] Reference Figure 2 , Figure 3 and Figure 4 In order to further improve the electrical safety of the high-voltage connector 1, in this embodiment, a baffle 5 is provided in the cavity 202. The baffle 5 is provided between two adjacent terminals 101, forming a barrier between the two adjacent terminals 101. It is not easy to generate electric sparks between the two terminals 101 due to air breakdown discharge. The baffle 5 and the side plate 201 are made of the same material and are formed on the bottom plate 2011 by injection molding.

[0067] It should be noted that, in order to reduce the mold opening cost, the ribs 3, the mounting plates 4 and the baffles 5 are all formed on the bottom plate 2011 by injection molding. In addition, the ribs 3, the mounting plates 4 and the baffles 5 are all configured to be arranged along a plane perpendicular to the bottom plate 2011. By adopting the above arrangement, not only can the production cost be effectively controlled and the demolding be convenient, but also the support of the vertical components can be utilized to make the shell 2 have better mechanical strength and bearing capacity. The above structure does not constitute the only limitation on the position setting method of the ribs 3, the mounting plates 4 and the baffles 5. The setting positions of the ribs 3, the mounting plates 4 and the baffles 5 can also be adjusted to the side plates 2012 or the top plates 2013 according to actual conditions and needs.

[0068] Embodiment 2

[0069] This embodiment relates to a battery pack, including the high-voltage connector support structure involved in the first embodiment.

[0070] In this embodiment, by applying the above-mentioned high-voltage connector support structure in the battery pack, the stability of the connection structure between the high-voltage connector and the busbar can be effectively improved, which is conducive to avoiding the twisting of the soft copper busbar conductor. In addition, the high-voltage connector support structure also forms a barrier and protection for the electrically connected parts, so that it can meet the requirements of airtight protection for equipment or personnel, and to a certain extent reduce or eliminate the electrical safety hazards that may exist in the use of the high-voltage connector.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high-voltage connector support structure, used to support and protect the connection structure between the wiring terminal of the high-voltage connector and the battery pack bus, characterized in that: The high voltage connector support structure includes: A shell, wherein the shell is formed by detachably closing a plurality of side panels, and has a cavity due to the closing of the side panels; The housing is formed on the high voltage connector so that the connection terminal is exposed in the cavity; The side surface of the shell is provided with a plurality of windows, and the positions of the windows are corresponding to the wiring ends of the wiring terminals so as to allow the busbar connected to the wiring terminals to pass through.

2. The high voltage connector support structure according to claim 1, characterized in that: The side plate comprises: A bottom plate, the bottom plate being configured to be sleeved laterally and wrapped around the connection terminal; The side plate is detachably fastened to the bottom plate to seal the connection terminal.

3. The high voltage connector support structure according to claim 2, characterized in that: The side panel also includes: A top plate is detachably fastened to the top of the bottom plate and the side plates.

4. The high voltage connector support structure according to claim 3, characterized in that: The top plate protrudes outwards to form a relief portion.

5. The high voltage connector support structure according to claim 2, characterized in that: The side panel also includes: A covering plate is formed by extending the side plate toward the window to cover the window; a weak portion is provided between the covering plate and the side plate.

6. The high voltage connector support structure according to any one of claims 1 to 5, characterized in that: It also includes a plurality of ribs fixed in the cavity; the cavity is divided by the ribs to form a plurality of accommodating spaces adapted to the thickness of the connecting terminals.

7. The high voltage connector support structure according to claim 6, characterized in that: A mounting plate is fixedly arranged in the cavity; the mounting plate is arranged below the wiring terminal of the wiring terminal and connected to the rib plate; The mounting plate is provided with a mounting hole, and the mounting hole is constructed as a threaded through hole concentric with the wiring hole of the wiring terminal.

8. The high voltage connector support structure according to claim 6, characterized in that: A baffle is fixedly arranged in the cavity, and the baffle is arranged between the connection ends of two adjacent connection terminals to separate the connection ends of the two adjacent connection terminals.

9. The high voltage connector support structure according to claim 6, characterized in that: One end of the shell close to the high-voltage connector extends toward the high-voltage connector to form a wrapping portion, which wraps around the raised portion of the high-voltage connector to limit the shell itself.

10. A battery pack, characterized in that: The invention comprises a high voltage connector supporting structure as claimed in any one of claims 1 to 9.

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