A new energy vehicle battery pack terminal and battery pack

Abstract

The present invention discloses a battery pack terminal and a battery pack for a new energy vehicle. The terminal includes an insulating plate and a plastic end shell. A metal frame plate is embedded in the rear side of the plastic end shell. An insulating plate is arranged on the rear side of the metal frame plate. A through slot is arranged in the middle of the metal frame plate. U-shaped mounting brackets are arranged on both sides of the through slot. A U-shaped through hole is arranged at a position corresponding to the U-shaped mounting bracket on the plastic end shell. The U-shaped mounting bracket passes through the U-shaped through hole and is exposed at the front end of the plastic end shell. A hook is arranged on the upper part of the U-shaped mounting bracket. The upper and lower edges of the metal frame plate and the upper and lower edges of the through slot are provided with folding inserts. The folding inserts are embedded in the corresponding positioning slots on the rear side of the plastic end shell. The present invention can solve the problems of the existing battery pack having a relatively large overall volume and weight, and poor cooling and buffer protection effects.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and in particular to a new energy vehicle battery pack terminal seat and a battery pack. Background Art

[0002] The battery pack is a very important component in new energy vehicles. Its value and safety requirements are the highest in new energy vehicles. The existing automotive battery pack generally includes a number of arranged battery blocks and end seats arranged at both ends of the battery pack. The end seats are combined together with a large number of battery packs by steel straps. The existing end seats are generally formed in one piece using an aluminum die-casting structure. The aluminum end seats are relatively thick and heavy, which increases the overall weight and volume of the battery pack, which is not conducive to large-scale assembly on the car. In addition, the existing end seats have a single function, which only has the function of installation and fixing, and cannot meet the requirements of automotive battery pack cooling, buffering and battery protection. Summary of the invention

[0003] The present invention provides a battery pack terminal seat and a battery pack for a new energy vehicle, which can solve the problems of the existing battery pack having a relatively large overall volume and weight and poor cooling and buffering protection effects.

[0004] To achieve the above-mentioned purpose, in a first aspect, the present invention provides the following technical solutions: a new energy vehicle battery pack terminal seat, comprising an insulating plate and a plastic end shell, wherein a metal skeleton plate is embedded in the rear side of the plastic end shell, an insulating plate is arranged on the rear side of the metal skeleton plate, a through groove is arranged in the middle of the metal skeleton plate, and U-shaped mounting brackets are arranged on both sides of the through groove, a U-shaped through hole is arranged at a position corresponding to the U-shaped mounting bracket on the plastic end shell, the U-shaped mounting bracket passes through the U-shaped through hole and is exposed at the front end of the plastic end shell, a hook-shaped portion is arranged on the upper part of the U-shaped mounting bracket, and the upper and lower edges of the metal skeleton plate and the upper and lower edges of the through groove are provided with folded edge plug-ins, which are embedded in the corresponding positioning slots on the rear side of the plastic end shell, and a composite structure in which the metal skeleton plate and the plastic end shell are plugged in and matched with each other is adopted, and the U-shaped mounting bracket on the metal skeleton plate is arranged through the plastic end shell, the composite structure has high overall strength and is firmly installed, so that the weight of the terminal seat is relatively light and the thickness is relatively thin, which can reduce the overall volume of the battery pack.

[0005] Preferably, the positioning slots include inner positioning slots arranged on the upper and lower sides of the U-shaped through hole and outer positioning slots arranged near the upper and lower edges of the plastic end shell. The folded edge plug plates on the upper and lower edges of the through slot are inserted into the inner positioning slots, and the folded edge plug plates on the upper and lower edges of the metal frame plate are inserted into the outer positioning slots. By arranging the positioning slots and the folded edge plug plates in layers up and down, the plastic end shell and the metal frame plate can be firmly plugged in, are not easy to loosen, and do not require other fasteners, so the assembly is very convenient.

[0006] Preferably, a plurality of transverse mounting grooves are arranged laterally between the outer positioning grooves and the inner positioning grooves that are close to each other, and the transverse mounting grooves are filled with cooling gel. The cooling gel is in contact with the metal frame plate. The transverse mounting grooves can improve the overall strength of the plastic end shell, and the space inside the transverse mounting grooves is used to install the cooling gel, which can increase the heat dissipation speed of the metal frame plate, which is beneficial to the heat dissipation of the battery pack end.

[0007] Preferably, a pair of auxiliary hollow holes are arranged side by side in the middle of the plastic end shell, and the auxiliary hollow holes correspond to the positions of the through grooves on the metal skeleton plate. The auxiliary hollow holes can reduce weight and increase strength, and can also be used to install wiring terminals, sensors, etc. as needed.

[0008] Preferably, the rear side of the plastic end shell is provided with a plurality of inner grooves on both sides of the U-shaped through hole, and the upper and lower edges of the rear side of the plastic end shell are provided with long strip grooves, and elastic blocks are embedded in the inner grooves and the long strip grooves, and the elastic blocks are connected to the insulating plate. The elastic blocks have a buffering effect when the insulating plate is under pressure, and the elastic blocks can be compressed when the battery expands due to heat, so that the expansion of the battery will not break the steel belt.

[0009] Preferably, a T-shaped hanging plate extending upward to the outside of the plastic end shell is centrally arranged at the upper end of the metal skeleton plate to facilitate the hanging and arrangement of the entire battery pack in the battery pack box.

[0010] Preferably, the upper and lower front sides of the plastic end shell are laterally provided with steel strap fixing grooves, so as to facilitate the use of steel straps to bind and fix the end covers on both sides to the battery.

[0011] In the second aspect, the present invention also provides a battery pack, which includes two new energy vehicle battery pack end seats as described in the first aspect and batteries arranged side by side between the two battery pack end seats, the battery pack end seats and the batteries are bound and connected together by a transversely wound steel strap, the batteries and the battery pack end seats are placed on the upper side of the base plate, the U-shaped mounting bracket of the battery pack end seat is connected to the base plate by a vertical screw, and pressure belts are arranged side by side on the upper side of the batteries, and connecting columns are arranged at both ends of the pressure belts, and the connecting columns are hooked with the corresponding hook-shaped parts on the battery pack end seats, and a pressing sheet covering the positive and negative poles at the upper end of the battery is arranged on the lower side of the pressure belt, the end seat and the battery can be firmly fixed together by setting the base plate, and the pressing belt can be fixed by cooperating with the connecting column and the hook-shaped part, the pressing belt can improve the binding strength of the entire battery pack, and the positive and negative poles on the battery can be protected by the pressing sheet on the pressure belt, which is not easy to get water or short-circuit, thereby ensuring the safe use of the battery pack.

[0012] Preferably, partitions are provided between the batteries to block heat conduction between the batteries.

[0013] Preferably, the pressing belt is a steel belt, so that the pressing belt has relatively large strength, and the pressing sheet is an insulating material, which can effectively protect the positive and negative electrodes on the battery.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The end cover adopts a composite structure in which a metal frame plate and a plastic end shell are plugged into each other. At the same time, the U-shaped mounting bracket on the metal frame plate is set through the plastic end shell. The composite structure has high overall strength and is firmly installed, making the weight of the end seat relatively light and the thickness relatively thin, which can reduce the overall volume of the battery pack;

[0016] (2) By arranging positioning slots and folding inserts in layers on the plastic end shell, the plastic end shell and the metal frame plate can be firmly plugged in, not easy to loosen, and no other fasteners are required, so the assembly is very convenient;

[0017] (3) The transverse mounting groove on the plastic end shell can improve the overall strength of the plastic end shell, and the space inside the transverse mounting groove is used to install the cooling gel, which can increase the heat dissipation speed of the metal skeleton plate, which is beneficial to the heat dissipation of the battery pack end;

[0018] (4) Elastic blocks are embedded in the inner groove and the long strip groove on the plastic end shell. The elastic blocks are connected to the insulating plate. The elastic blocks provide a buffering effect when the insulating plate is compressed. When the battery expands due to heat, the elastic blocks can be compressed so that the expansion of the battery will not break the steel belt.

[0019] (5) In the structure of the battery pack, the pressing belt can be fixed by cooperating with the connecting column and the hook-shaped part. The pressing belt can improve the binding strength of the entire battery pack. In addition, the positive and negative electrodes on the battery can be protected by the pressing sheet on the pressing belt, which is not easy to get water in or short-circuit, thereby ensuring the safety of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of the end seat of the present invention from a first viewing angle;

[0021] Figure 2 A second perspective three-dimensional structural diagram of the end seat of the present invention;

[0022] Figure 3 It is a side cross-sectional structural diagram of the end seat of the present invention;

[0023] Figure 4 It is a three-dimensional structural diagram of the metal skeleton plate of the present invention;

[0024] Figure 5It is a three-dimensional structural diagram of the plastic end shell of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the end seat of the present invention after removing the insulating plate;

[0026] Figure 7 It is a front view structural diagram of the battery pack of the present invention;

[0027] Figure 8 It is a top view of the structure of the battery pack of the present invention.

[0028] Reference numerals:

[0029] 1. Plastic end shell, 11. Cooling gel, 12. Long strip groove, 13. Auxiliary hollow hole, 14. Inner groove, 15. Outer positioning slot, 16. U-shaped through hole, 17. Horizontal mounting slot, 18. Inner positioning slot, 2. Metal skeleton plate, 21. T-shaped lifting plate, 22. U-shaped mounting bracket, 23. Hook-shaped part, 24. Steel strap fixing slot, 25. Connecting hole, 26. Through slot, 27. Folding edge plug plate, 28. Steel strap, 3. Insulating plate, 4. Elastic block, 5. Bottom plate, 6. Connecting column, 7. Pressing belt, 8. Partition, 9. Battery, 10. Pressing sheet. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-8As shown, in order to solve the problems of the existing battery pack having a relatively large overall volume and weight, and poor cooling and buffering protection effects, an embodiment of the present invention provides a new energy vehicle battery pack terminal, including an insulating plate 3, and also includes a plastic end shell 1, the rear side of the plastic end shell 1 is embedded with a metal skeleton plate 2, the rear side of the metal skeleton plate 2 is provided with an insulating plate 3, the middle part of the metal skeleton plate 2 is provided with a through groove 26, both sides of the through groove 26 are provided with U-shaped mounting brackets 22, the position of the plastic end shell 1 corresponding to the U-shaped mounting bracket 22 is provided with a U-shaped through hole 16, the U-shaped mounting bracket 22 The U-shaped mounting bracket 22 is exposed through the U-shaped through hole 16 at the front end of the plastic end shell 1. A hook-shaped portion 23 is provided on the upper portion of the U-shaped mounting bracket 22. The upper and lower edges of the metal skeleton plate 2 and the upper and lower edges of the through groove 26 are provided with folded edge plug plates 27. The folded edge plug plates 27 are embedded in the corresponding positioning slots on the rear side of the plastic end shell 1. A composite structure in which the metal skeleton plate 2 and the plastic end shell 1 are plugged in and matched with each other is adopted. The U-shaped mounting bracket 22 on the metal skeleton plate 2 is arranged through the plastic end shell 1. The composite structure has high overall strength and is firmly installed, so that the weight of the end seat is relatively light and the thickness is relatively thin, which can reduce the overall volume of the battery pack.

[0032] Specifically, the plastic end shell 1 is made of high-strength engineering plastics, such as polyphenylene ether (PPO), PEEK plastic, etc., which has good high temperature resistance and corrosion resistance, and is molded or injection molded. The metal frame plate 2 is made of steel or aluminum alloy material, which plays a major supporting role, such as Figure 3 As shown, the plastic end shell 1 and the metal frame plate 2 are combined with each other without increasing the thickness of the plastic end shell 1. The thickness of the entire end seat is mainly the thickness of the plastic end shell 1; the insulating plate 3 can be made of flexible material or hard material, which can be selected according to needs.

[0033] The U-shaped mounting bracket 22 is relatively strong, and a mounting hole is provided in the center of the bottom thereof, through which a connecting fastener can be inserted, so as to be connected to the mounting position of the battery pack.

[0034] In this embodiment, the positioning slots include inner positioning slots 18 arranged on the upper and lower sides of the U-shaped through hole 16 and outer positioning slots 15 arranged near the upper and lower edges of the plastic end shell 1. The hemming plugs 27 at the upper and lower edges of the through slot 26 are inserted into the inner positioning slots 18, and the hemming plugs 27 at the upper and lower edges of the metal frame plate 2 are inserted into the outer positioning slots 15. By arranging the positioning slots and the hemming plugs 27 in layers, the plastic end shell 1 and the metal frame plate 2 can be firmly plugged in, not easy to loosen, and no other fasteners are required, so that the assembly is very convenient. Among them, the outer positioning slot 15 and the inner positioning slot 18 are both narrow slots arranged horizontally, and the inner side walls of the outer positioning slot 15 and the inner positioning slot 18 can be inclined surfaces, so that the friction can be increased when contacting with the hemming plugs 27.

[0035] In this embodiment, a plurality of transverse mounting grooves 17 are transversely arranged between the outer positioning slots 15 and the inner positioning slots 18 that are close to each other. The transverse mounting grooves 17 are filled with cooling gel 11. The cooling gel 11 is in contact with the metal frame plate 2. The transverse mounting grooves 17 can improve the overall strength of the plastic end shell 1, and the space inside the transverse mounting grooves 17 is used to install the cooling gel 11, which can increase the heat dissipation speed of the metal frame plate 2, which is beneficial to the heat dissipation of the battery pack end. The number of transverse mounting grooves 17 is set according to the distance between the outer positioning slots 15 and the inner positioning slots 18. The cooling gel 11 is filled into the transverse mounting grooves 17 during assembly and can also be replaced during maintenance.

[0036] In this embodiment, if Figure 1 , 5 As shown in Figure 6, a pair of auxiliary hollow holes 13 are arranged side by side in the middle of the plastic end shell 1, and the auxiliary hollow holes 13 correspond to the positions of the through grooves 26 on the metal skeleton plate 2. The auxiliary hollow holes 13 can reduce weight and increase strength, and can also be used to install wiring terminals, sensors, etc. as needed. If wiring terminals need to be installed on the auxiliary hollow holes 13, the positions on the insulating plate 3 corresponding to the auxiliary hollow holes 13 can be hollowed out to facilitate the connection of the wiring terminals to the batteries.

[0037] In this embodiment, the rear side of the plastic end shell 1 is provided with a plurality of inner grooves 14 on both sides of the U-shaped through hole 16, and the upper and lower edges of the rear side of the plastic end shell 1 are provided with long strip grooves 12, and elastic blocks 4 are embedded in the inner grooves 14 and the long strip grooves 12. The elastic blocks 4 are connected to the insulating plate 3, and the insulating plate 3 has a buffering effect when it is compressed through the elastic blocks 4. When the battery expands due to heat, the elastic blocks 4 can be compressed so that the expansion of the battery will not break the steel belt, such as Figure 5As shown, the shape of the inner groove 14 can be set according to the specific shape of the plastic end shell 1, such as setting two rectangular inner grooves 14 side by side on the outer side of the U-shaped through hole 16, and a circle of inner grooves 14 of various shapes can be set around the auxiliary hollow hole 13, these inner grooves 14 can improve the overall strength of the plastic end shell 1, all the inner grooves 14 and the long strip grooves 12 avoid the metal skeleton plate 2 and directly correspond to the insulating plate 3, the elastic block 4 can be made of high temperature resistant elastic material, such as TPU, POE material, the shape of the elastic block 4 matches the shape of the inner groove 14 and the long strip groove 12, and it is not easy to fall out, and the positions of the inner groove 14 and the long strip groove 12 are relatively dispersed, which can effectively support the insulating plate 3.

[0038] To facilitate the installation of the battery pack, Figure 1 As shown, a T-shaped lifting plate 21 extending upward to the outside of the plastic end shell 1 is centrally arranged at the upper end of the metal skeleton plate 2, so as to facilitate the lifting and arrangement of the entire battery pack in the battery pack box. The T-shaped lifting plate 21 is convenient for connection with the lifting rope, and a connecting hole 25 is opened in the middle of the T-shaped lifting plate 21, which can be connected with fasteners and connected to the sling.

[0039] At the same time, the upper and lower front sides of the plastic end shell 1 are laterally provided with steel strap fixing grooves 24, so as to facilitate the use of steel straps to bind and fix the end covers on both sides to the battery.

[0040] In this embodiment, a battery pack includes two new energy vehicle battery pack end seats as described in the first aspect and batteries 9 arranged side by side between the two battery pack end seats, the battery pack end seats and the batteries 9 are bound and connected together by a transversely wound steel strap 28, the batteries 9 and the battery pack end seats are placed on the upper side of the base plate 5, the U-shaped mounting bracket 22 of the battery pack end seat is connected to the base plate 5 by vertical screws, the upper side of the batteries 9 is provided with press belts 7, the two ends of the press belt 7 are provided with connecting columns 6, the connecting columns 6 are connected to the corresponding ones on the battery pack end seats The hook-shaped portion 23 is hooked, and the lower side of the pressing belt 7 is provided with a pressing sheet 10 that covers the positive and negative electrodes at the upper end of the battery 9. The end seat and the battery 9 can be firmly fixed together by setting the bottom plate 5, and the pressing belt 7 can be fixed by the connection column 6 and the hook-shaped portion 23. The pressing belt 7 can improve the binding strength of the entire battery pack, and the pressing sheet 10 on the pressing belt 7 can protect the positive and negative electrodes on the battery, which is not easy to enter water or short circuit, ensuring the safety of the battery pack. Specifically, a partition 8 is provided between the batteries 9 to block the heat conduction of the battery 9. The pressing belt 7 is a steel belt, which makes the pressing belt 7 have a relatively large strength. The pressing sheet 10 is an insulating material, which can effectively protect the positive and negative electrodes on the battery. Specifically, an integrated busbar will be installed at the upper end of the battery pack to integrate the positive and negative electrodes of the battery together, and the positive and negative electrodes of the battery in this embodiment will still be exposed on the upper side. In this embodiment, the pressing sheet 10 can be set as a cover-shaped structure, made of silicone or rubber material, and has a waterproof effect after covering the positive and negative electrodes.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A new energy vehicle battery pack terminal, comprising an insulating plate (3), characterized in that: Also includes: A plastic end shell (1), wherein a metal frame plate (2) is embedded in the rear side of the plastic end shell (1), an insulating plate (3) is arranged on the rear side of the metal frame plate (2), a through slot (26) is arranged in the middle of the metal frame plate (2), U-shaped mounting brackets (22) are arranged on both sides of the through slot (26), a U-shaped through hole (16) is arranged at a position on the plastic end shell (1) corresponding to the U-shaped mounting bracket (22), the U-shaped mounting bracket (22) passes through the U-shaped through hole (16) and is exposed at the front end of the plastic end shell (1), a hook-shaped portion (23) is arranged on the upper part of the U-shaped mounting bracket (22), and the upper and lower edges of the metal frame plate (2) and the upper and lower edges of the through slot (26) are provided with folding inserts (27), and the folding inserts (27) are embedded in the corresponding positioning slots on the rear side of the plastic end shell (1).

2. The new energy vehicle battery pack terminal according to claim 1, characterized in that: The positioning slots include inner positioning slots (18) arranged on the upper and lower sides of the U-shaped through hole (16) and outer positioning slots (15) arranged near the upper and lower edges of the plastic end shell (1), the folded edge inserts (27) on the upper and lower edges of the through slot (26) are inserted into the inner positioning slots (18), and the folded edge inserts (27) on the upper and lower edges of the metal frame plate (2) are inserted into the outer positioning slots (15).

3. The new energy vehicle battery pack terminal according to claim 2, characterized in that: A plurality of transverse mounting grooves (17) are arranged transversely between the outer positioning grooves (15) and the inner positioning grooves (18) adjacent to each other, the transverse mounting grooves (17) are filled with cooling gel (11), and the cooling gel (11) is in contact with the metal frame plate (2).

4. The new energy vehicle battery pack terminal according to claim 1, characterized in that: A pair of auxiliary hollow holes (13) are arranged side by side in the middle of the plastic end shell (1), and the auxiliary hollow holes (13) correspond to the positions of the through grooves (26) on the metal frame plate (2).

5. The new energy vehicle battery pack terminal according to claim 1, characterized in that: A plurality of inner grooves (14) are provided on both sides of the U-shaped through hole (16) at the rear side of the plastic end shell (1), and long strip grooves (12) are provided on both upper and lower edges of the rear side of the plastic end shell (1). Elastic blocks (4) are embedded in the inner grooves (14) and the long strip grooves (12), and the elastic blocks (4) are connected to the insulating plate (3).

6. The new energy vehicle battery pack terminal according to claim 1, characterized in that: A T-shaped hanging plate (21) is arranged in the center of the upper end of the metal frame plate (2) and extends upward to the outside of the plastic end shell (1).

7. The new energy vehicle battery pack terminal according to claim 1, characterized in that: Steel strap fixing grooves (24) are transversely arranged at the upper and lower front sides of the plastic end shell (1).

8. A battery pack, characterized in that: The invention comprises two battery pack end seats for new energy vehicles as described in any one of claims 1 to 7 and batteries (9) arranged side by side between the two battery pack end seats, wherein the battery pack end seats and the batteries (9) are bound and connected together by a transversely wound steel binding band (28), the batteries (9) and the battery pack end seats are placed on the upper side of a base plate (5), the U-shaped mounting bracket (22) of the battery pack end seats is connected to the base plate (5) by vertical screws, pressing bands (7) are arranged side by side on the upper side of the batteries (9), connecting columns (6) are arranged at both ends of the pressing bands (7), the connecting columns (6) are hooked with the hook-shaped parts (23) on the corresponding battery pack end seats, and a pressing sheet (10) is arranged on the lower side of the pressing band (7) for covering the positive and negative electrodes at the upper ends of the batteries (9).

9. The battery pack according to claim 8, characterized in that: A partition (8) is provided between the batteries (9).

10. The battery pack according to claim 8, characterized in that: The pressing belt (7) is a steel belt, and the pressing sheet (10) is an insulating material.

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