WO2024045610A1

WO2024045610A1 - Quick plug connector and battery compartment

Info

Publication number: WO2024045610A1
Application number: PCT/CN2023/085920
Authority: WO
Inventors: 易小刚; 张星; 刘刚; 杨重
Original assignee: 三一锂能有限公司
Priority date: 2022-08-31
Filing date: 2023-04-03
Publication date: 2024-03-07

Abstract

The present application relates to the technical field of power batteries, and in particular to a quick plug connector and a battery compartment. The quick plug connector comprises: a mounting plate, mounting holes being formed in the mounting plate; first mounting bases, the first mounting bases being provided on the mounting plate by means of the mounting holes; and an electric connector and a liquid connector which are provided on the first mounting bases, wherein the electric connector is used for implementing circuit connection between adjacent battery compartments, and the liquid connector is used for implementing water path connection between adjacent battery compartments. In the quick plug connector and the battery compartment of the present application, the electric connector and the liquid connector can be directly and quickly in butt joint with interfaces on other battery compartments.

Description

Quick connector and battery box

Technical field

The present application relates to the technical field of power batteries, and in particular to a quick-plug connector and a battery box.

Background technique

At present, electric working machinery (such as heavy trucks, mixers, dump trucks) mainly uses large-power battery assemblies. In some application scenarios, small-power battery systems can meet the usage needs. It can be seen that the battery system settings In order to be able to be assembled in a form, it is necessary to assemble the required number of battery systems according to actual work requirements.

Contents of the invention

This application provides a quick-plug connector and a battery box to realize quick connection of circuits and waterways between battery systems.

The present application provides a quick-plug connector, which includes: a mounting plate provided with a mounting hole; a first mounting base, the first mounting base is provided on the mounting plate through the mounting hole; and an electrical connector provided on the first mounting base. Connector and liquid connector, the electrical connector is used to realize the circuit connection between adjacent battery boxes, and the liquid connector is used to realize the water connection between adjacent battery boxes.

According to a quick-plug connector provided by this application, the quick-plug connector also includes: a fixing plate, the fixing plate is suitable for being fixedly arranged in the box of the battery box; and an elastic component, which is connected to the mounting plate and the fixing plate respectively, and the elastic component is fixed away from the The mounting plate is elastically supported in the direction of the plate.

According to a quick-plug joint provided by this application, the elastic component includes a support spring and a support rod. One end of the support rod is fixedly connected to the fixed plate, the other end of the support rod is slidingly connected to the installation plate, the support spring is sleeved with the support rod, and Both ends of the support spring are respectively in contact with the fixing plate and the installation plate.

According to a quick-plug connector provided by this application, at least two fixed plates are provided, and each fixed plate is provided with at least one elastic component.

According to a quick-plug connector provided by the present application, the mounting plate is adapted to be slidably disposed on the upper side of the battery box.

According to a quick-plug connector provided by this application, the electrical connector includes a plug-in interface, and the plug-in interface is connected to a copper bar, and the copper bar is electrically connected to the electrical devices in the battery box.

According to a quick-plug joint provided by this application, the liquid connector includes: a plug-in part, which is arranged on the first On the mounting base, the plug portion is provided with mutually parallel liquid supply plug-in pipes and liquid return plug-in pipes. The liquid supply plug-in pipes and the liquid return plug-in pipes penetrate the first installation base and the mounting plate. One end of the liquid supply plug-in pipe and the liquid return plug pipe are One end of the plug pipe is located outside the first mounting base, and the other end of the liquid supply plug pipe and the other end of the liquid return plug pipe are located in the first mounting base; the liquid supply pipe, the liquid supply pipe and the liquid supply plug pipe are detachably connected; and The liquid return pipe, the liquid return pipe and the liquid return plug pipe are detachably connected.

According to a quick-plug joint provided by this application, there are at least two first mounting seats. The liquid supply plug-in pipe and the liquid return plug-in pipe are provided on the same first installation base. The electrical connector is provided on other first installation bases. Take your seat.

According to a quick-plug joint provided by the present application, the liquid supply pipe includes a liquid supply pipe, and the liquid supply pipe is connected to one end of the liquid supply plug pipe located in the first mounting seat; the liquid return pipe includes a liquid return pipe, and the liquid return pipe is connected to the return pipe. The liquid plug pipe is connected at one end located in the first mounting base.

According to a quick-plug joint provided by this application, the liquid supply pipeline also includes: a main liquid supply pipe and a branch liquid supply pipe; the liquid return pipeline also includes: a main liquid return pipe and a branch liquid return pipe; one end of the liquid supply main pipe is connected to the liquid supply pipe, and the liquid return pipe is connected to the liquid supply pipe. The other end of the liquid main pipe is suitable for connecting to the liquid supply hole on the box of the battery box; one end of the liquid return main pipe is connected to the liquid supply pipe, and the other end of the liquid return main pipe is suitable for connecting to the liquid return hole on the case of the battery box; the liquid supply branch pipe The liquid supply main pipe is connected to the coolant inlet of the battery module located in the battery box; the liquid return pipe is connected to the liquid return main pipe and the coolant outlet of the battery module located in the battery box.

According to a quick-plug joint provided by the present application, the liquid supply pipe and the liquid return pipe respectively include at least two-way pipes, and the liquid supply pipe and the liquid return pipe are separated from the first mounting seat along the width direction of the battery box. different direction sides.

According to a quick-plug joint provided by the present application, when the liquid supply branch pipe and the liquid return branch pipe respectively include two-way pipes, the two-way pipes of the liquid supply branch pipe include: a first pipe section and a second pipe section, and the two-way liquid return pipe section It includes: a third pipe section and a fourth pipe section. One end of the first pipe section is connected to the middle part of the liquid supply main pipe, and the other end of the first pipe section is connected to the middle part of the second pipe section. One end of the third pipe section is connected to the middle part of the liquid return main pipe. The third pipe section The other end of the battery box is connected to the middle part of the fourth pipe section; the second pipe section and the fourth pipe section are located on both sides of the inner cavity of the battery box in the width direction, and respectively extend along the length direction of the battery box.

According to a quick-plug joint provided by the present application, at least two joints are respectively provided on the liquid supply pipe and the liquid return pipe, and the at least two joints are suitable for connecting the cooling pipes of the cell modules in the battery box.

According to a quick-plug joint provided by the present application, at least two joints on the liquid supply pipe are provided on the second pipe section, and at least two joints on the liquid return pipe are provided on the fourth pipe section.

According to a quick-plug joint provided by the present application, the electrical connector and/or the liquid connector are detachably connected to the mounting plate.

According to a quick-plug connector provided by this application, there are three first mounting seats. Two of the three first mounting seats are respectively provided with an electrical connector. One of the three first mounting seats is provided with an electrical connector. A first mounting base is provided with a liquid connector, and two electrical connectors are located on both sides of the liquid connector.

According to a quick-plug connector provided by this application, the first mounting seat is detachably connected to the mounting plate, or the first mounting seat and the mounting plate are integrally formed, or the first mounting seat is fixedly connected to the middle part of the mounting plate.

This application also provides a battery box, including a box body and the above-mentioned quick-plug connector provided in the box body.

According to a battery box box provided by this application, an electro-hydraulic connection cavity is provided in the box, and a quick-plug connector is arranged at the position of the electro-hydraulic connection cavity.

According to a battery box provided by this application, a pair of limiting platforms are provided in the box. Along the length direction of the box, the pair of limiting platforms are located on both sides of the electro-hydraulic connection cavity. The electro-hydraulic connection cavity is connected to Battery installation positions are respectively formed between a pair of limiting platforms.

According to the battery box provided by the present application, a support boss is provided on the side wall of the electro-hydraulic connection cavity, and the fixing plate is fixedly arranged on the support boss.

According to a battery box provided by the present application, a threaded casing is provided on the support boss, and a fixing plate in the quick-plug connector is set at the top of the threaded casing, and is fixed to the support boss through bolts threadedly connected to the threaded casing. superior.

According to a battery box box provided by this application, a liquid supply hole and a liquid return hole are provided on the side wall of the box body.

According to a battery box provided by this application, the mounting plate in the quick-plug connector is provided with fixed ribs, and the fixed ribs are provided with threaded holes. The copper bars in the quick-plug connector are connected to the threaded holes through threads. Bolts to fix on the fixing ribs.

The quick-plug connector provided by this application can be directly and quickly connected to the interfaces on other battery boxes through electrical connectors and liquid connectors.

Furthermore, since the battery box provided by the present application is equipped with the quick-plug connector as mentioned above, it also has the above-mentioned advantages.

Description of drawings

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the overall structure of a quick-plug connector provided by this application.

Figure 2 is a cross-sectional view of the installation state of a quick-plug connector provided by this application.

Figure 3 is a schematic structural diagram of the upper structure of the box provided by this application.

Figure 4 is a schematic structural diagram of the lower structure of the box provided by this application.

Figure 5 is a perspective view of the installation state of a quick-plug connector provided by this application.

Figure 6 is a schematic structural diagram of the upper structure of a bottom connector provided by this application.

Figure 7 is a schematic structural diagram of the lower side structure of a bottom connector provided by this application.

Figure 8 is a schematic structural diagram of the upper structure of the box provided by this application.

Figure 9 is a schematic structural diagram of the lower side structure of the box provided by this application.

Figure 10 is one of the structural schematic diagrams of the bottom connector and the box provided by this application.

Figure 11 is the second structural schematic diagram of the cooperation between the bottom connector and the box provided by this application.

Figure 12 is a schematic structural diagram of the bottom connector provided by this application in use.

Referring to the accompanying drawings 1 to 5, the reference numerals include: 100, mounting plate; 200, fixed plate; 300, elastic component; 400, liquid connector; 410, first mounting base; 420, plug portion; 421. Liquid supply plug-in pipe; 422, liquid return plug-in pipe; 430, liquid supply pipe; 440, liquid return pipe; 450, liquid supply main pipe; 460, liquid return main pipe; 470, liquid supply branch pipe; 471, first liquid supply branch pipe; 472. Second liquid supply branch pipe; 473. Third liquid supply branch pipe; 480. Liquid return branch pipe; 481. First liquid return branch pipe; 482. Second liquid return branch pipe; 483. Third liquid return branch pipe; 500. Electrical connection 600, box; 610, liquid supply hole; 620, liquid return hole; 630, electro-hydraulic connection cavity; 640, support boss; 641, threaded sleeve; 650, circuit interface; and 660, pipeline interface.

Referring to Figures 6 to 12, the reference numbers include: 1. First mounting base; 2. Liquid supply interface; 3. Liquid return interface; 4. Plug-in interface; 5. Copper row; 6. Liquid supply main pipe; 7. Liquid supply pipe; 7a, first pipe section; 7b, second pipe section; 8, liquid return pipe; 8a, third pipe section; 8b, fourth pipe section; 9. Joint; 10. Box; 11. Liquid supply hole ; 12. Liquid return hole; 13. Fixed ribs; 14. Mounting plate; 15. Installation hole; 16. Limiting table; 17. Battery module; and 18. Liquid return pipe.

Detailed ways

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "back", "left" and "right" The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this document. The application embodiments and simplified descriptions do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the embodiments of the application. Furthermore, the term "first", "Second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

In the description of the embodiments of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Or integrated 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. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood in specific situations.

In the embodiments of this application, unless otherwise expressly provided and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in intermediate contact. Indirect media contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

It is very necessary to set up the battery system in a form that can be assembled. It is necessary to assemble the required number of battery systems according to the actual operation requirements. However, how to quickly connect the circuits and waterways between the battery systems is a major problem.

The quick-plug connector of the embodiment of the present application will be described below with reference to FIGS. 1 to 12 . The quick-plug connector of this embodiment can realize quick connection of circuits and waterways between battery boxes of two battery systems.

The quick-plug connector according to the embodiment of the present application includes: a mounting plate 100, which is provided with a mounting hole; a first mounting base 410, which is disposed on the mounting plate 100 through the mounting hole; and An electrical connector 500 and a liquid connector 400 on a mounting base 410.

The first mounting base 410 is fixedly disposed on the mounting plate 100 . Specifically, the first mounting base 410 can be fixed at one of the mounting holes through methods such as bolt connection and clamping.

The electrical connector 500 is used to connect the circuits of the two battery boxes, and the liquid connector 400 is used to connect the water channels of the two battery boxes. Electrical and liquid connectors allow two battery systems to be connected directly and quickly.

In some embodiments of the present application, the quick-plug connector of the embodiment of the present application is described with reference to Figures 1 to 5. The battery box used to install the quick-plug connector of this embodiment should be provided with an installation opening for installing the quick-plug connector. , and, since the battery systems are combined vertically, the installation port is provided on the upper side of the battery box at the top of the battery system.

The quick-plug connector according to the embodiment of the present application includes a mounting plate 100, a fixing plate 200 and an elastic component 300. The mounting plate 100 is provided with an electrical connector 500 and a liquid connector 400. The electrical connector 500 can realize the circuit connection of the battery boxes between adjacent battery systems, and the liquid connector 400 can realize the circuit connection of the battery boxes between adjacent battery systems. waterway connection. The mounting plate 100 is suitable for slidingly disposed on the upper side of the battery box body 600. The mounting plate 100 is specifically installed at the mounting port position. The mounting plate 100 can slide up and down at the mounting port position to adjust the height of the electrical connector 500 and the liquid connector 400. . The fixing plate 200 is suitable for being fixedly arranged in the box 600 of the battery box. The elastic components 300 are respectively connected to the mounting plate 100 and the fixing plate 200 . The elastic components 300 elastically support the mounting plate 100 in a direction away from the fixing plate 200 .

During the docking process of the battery system, if there are deviations in the production dimensions of the battery box connectors, the connection may be poor. For example, when the extension size of the connector is small, the circuit and waterway connection may not be in place; when the extension size of the connector is too long, the battery boxes of adjacent battery systems cannot fit together under the support of the connector. According to the embodiment of the present application, during the docking process, the electrical connector and the liquid connector can be ensured to be installed in place under the support of the elastic component, and if the extension length of the electrical connector and the liquid connector is too long, the electrical connector and the liquid connector can be connected to each other. The connected battery boxes retract under the extrusion action to ensure that the battery boxes fit together.

It can be understood that when the battery box body 600 is placed horizontally, the mounting plate 100 and the fixing plate 200 are both horizontal, the elastic component 300 is vertical, and the elastic component 300 vertically supports the mounting plate 100. When no external force is applied, the elastic component 300 In the extended state, when the mounting plate 100 or the electrical connector 500 or the liquid connector 400 on the mounting plate 100 is pushed downward, the elastic component 300 can produce vertical elastic deformation.

It can be seen from the above description that the quick-plug connector of the embodiment of the present application can not only realize the quick connection of circuits and waterways, but also has certain adaptability to ensure that adjacent battery systems can achieve good coordination effects. In addition, under the action of the elastic component 300, it can also be ensured that the electrical connector 500 and the liquid connector 400 always maintain a tight fit with the interfaces to which they are connected.

Optionally, the mounting plate 100 is provided with mounting holes, and the electrical connector 500 and the liquid connector 400 can be fixed in different mounting holes.

Optionally, at least one of the electrical connector 500 and the liquid connector 400 is detachably connected to the mounting plate 100 . The detachable connection method can be bolt connection or snap connection.

In some embodiments of the present application, the liquid connector 400 includes a plug portion 420 , a liquid supply pipe detachably connected to a liquid supply plug pipe 421 and a liquid supply pipe detachably connected to a liquid return plug pipe 422 . Plug The plug-in part 420 is provided on the first mounting base 410. The plug-in part 420 is provided with a liquid supply plug-in pipe 421 and a liquid return plug-in pipe 422 that are parallel to each other. The liquid supply plug-in pipe 421 and the liquid return plug-in pipe 422 are both arranged vertically. The top of the person is even. The liquid supply plug-in pipe 421 and the liquid return plug-in pipe 422 penetrate the first mounting base 410 and the mounting plate 100. For example, one end of the liquid supply plug-in pipe 421 and the liquid return plug-in pipe 422 is located outside the first mounting base 410, and the other end is located outside the first mounting base 410. In the mounting base 410, the ends of the liquid supply plug-in pipe 421 and the liquid return plug-in pipe 422 located outside the first mounting base 410 can be inserted into the interface of the bottom battery box of the adjacent battery system.

The liquid supply pipe includes a liquid supply pipe 430 , which is connected to one end of the liquid supply plug pipe 421 located in the first mounting base 410 . The liquid return pipe includes a liquid return pipe 440 , and the liquid return pipe 440 is connected to one end of the liquid return plug pipe 422 located in the first mounting seat 410 .

In the above solution, the liquid supply plug-in pipe 421 can realize the supply of coolant, and the coolant in the battery system located on the lower layer can flow into the connected battery system through the liquid supply plug-in pipe 421; the liquid return plug-in pipe 422 can realize the supply of coolant. Backflow, after the coolant completes the cooling cycle in the upper battery system, it can flow back to the lower battery system through the liquid return plug pipe 422.

In some embodiments of the present application, the liquid supply pipeline also includes: a main liquid supply pipe 450 and a branch liquid supply pipe 470; the liquid return pipeline also includes: a main liquid return pipe 460 and a branch liquid return pipe 480.

One end of the liquid supply main pipe 450 is connected to the liquid supply pipe 430, and the other end is suitable for connecting to the liquid supply hole 610 on the box 600 of the battery box; one end of the liquid return main pipe 460 is connected to the liquid supply pipe 430, and the other end is suitable for connecting to the tank of the battery box. The liquid return hole 620 on the body 600. It should be noted here that the liquid supply hole 610 and the liquid return hole 620 on the box body 600 of the battery box are channels for cooling communication between adjacent battery boxes in the battery system. Specifically, vertical liquid supply holes 610 and liquid return holes 620 are provided on the side walls of the battery box body 600. In the same battery system, the liquid supply holes 610 and liquid return holes of the battery box body 600 located at the bottom are The upper end of the hole 620 is open, the liquid supply hole 610 and the liquid return hole 620 of the battery box body 600 located in the middle are open at both upper and lower ends, and the liquid supply hole 610 and the liquid return hole 620 of the battery box body 600 located at the top are open. The lower end is open. When battery boxes in the same battery system are stacked, the liquid supply holes 610 and the liquid return holes 620 between the boxes 600 of different battery boxes are aligned respectively, so that the coolant in the lower battery box can pass through the liquid supply holes. 610 is supplied to the battery box located on the upper layer, and the coolant in the battery box located on the upper layer can flow back to the battery box located on the lower layer through the liquid return hole 620 . In addition, it should be noted that the flow direction of the coolant in the liquid supply main pipe 450 is from the liquid supply hole 610 into the liquid supply main pipe 450, through the liquid supply main pipe 450 into the liquid supply pipe 430, and is supplied to the liquid supply plug pipe 421; return The flow direction of the coolant in the liquid main pipe 460 is that the coolant flows into the liquid return pipe 440 from the liquid return plug pipe 422 and flows back into the return hole through the liquid return main pipe 460 .

The liquid supply branch pipe 470 connects the liquid supply main pipe 450 and the coolant inlet of the battery module located in the box 600. Part of the coolant in the liquid supply main pipe 450 flows into the liquid supply pipe 430, and the other part passes through The liquid supply pipe 470 flows into the cooling plate of the battery module.

The liquid return branch pipe 480 connects the liquid return pipe 460 and the coolant outlet of the battery module located in the box 600. The return coolant in the liquid return pipe 460 and the battery module cooling plate can flow into the liquid return hole through the liquid return pipe 480. 620 in.

The liquid supply branch pipe 470 and the liquid return branch pipe 480 each include at least two pipes, and the liquid supply branch pipe 470 and the liquid return branch pipe 480 are located on different sides of the first mounting base 410 along the width direction of the battery box body 600 .

For example, the liquid supply branch pipe 470 and the liquid return branch pipe 480 are respectively three-way pipes with three branches, and the liquid supply branch pipe 470 and the liquid return branch pipe 480 are located in different directions of the first mounting base 410 along the width direction of the box 600 side. Specifically, the liquid supply branch pipe 470 includes a first liquid supply branch pipe 471 (which may also be referred to as the first pipe section 7a in FIG. 6 ), a second liquid supply branch pipe 472 and a third liquid supply branch pipe 473 (both of which may also be collectively referred to as In the second pipe section 7b) in Figure 6, one end of the first liquid supply branch pipe 471 is connected to the main liquid supply pipe 450, and the other end is connected to the ends of the second liquid supply branch pipe 472 and the third liquid supply branch pipe 473. The second liquid supply branch pipe 472 The second liquid supply branch pipe 472 and the third liquid supply branch pipe 473 extend toward different sides along the length direction of the battery box body 600 . The second liquid supply branch pipe 472 and the third liquid supply branch pipe 473 are suitable for connecting different inner cores in the battery box body 600 . Inlet liquid cooling pipe. The liquid return branch pipe 480 includes a first liquid return branch pipe 481 (which can also be called the third pipe section 8a in Figure 6 ), a second liquid return branch pipe 482 and a third liquid return branch pipe 483 (both of which can also be collectively called the third liquid return branch pipe 8a in Figure 6 The fourth pipe section 8b), one end of the first liquid return branch pipe 481 is connected to the liquid return main pipe 460, and the other end is connected to the ends of the second liquid return branch pipe 482 and the third liquid return branch pipe 483. The liquid return branch pipes 483 extend toward different sides along the length direction of the battery box body 600. The second liquid return branch pipe 482 and the third liquid return branch pipe 483 are suitable for connecting the liquid return cooling of different inner cores in the battery box body 600. Tube.

The first liquid supply branch pipe 471 and the first liquid return branch pipe 481 and the second liquid supply branch pipe 472 and the second liquid return branch pipe 482 are respectively provided correspondingly. After the cooling liquid supplied by the first liquid supply branch pipe 471 passes through the battery module, it flows back through the first liquid return branch pipe 481; after the cooling liquid supplied by the second liquid supply branch pipe 472 passes through the battery cell module, it flows back through the second liquid return branch pipe 482. Reflux.

Further, the liquid supply pipe 470 and the liquid return pipe 480 are respectively provided with at least two joints. The number of joints corresponds to the number of cooling pipe interfaces of the cell modules in the battery box body 600. The joints are suitable for connecting batteries. The cooling pipe of the battery module in the box 600 of the box.

In some embodiments of the present application, there are three first mounting seats 410 , and two of the three first mounting seats 410 are respectively provided with an electrical connector 500 . The three first mounting seats 410 are respectively provided with an electrical connector 500 . A liquid connector 400 is provided on one of the first mounting seats 410 . For example, the mounting board 100 is provided with two electrical connectors 500 , and the two electrical connectors 500 are placed on both sides of the liquid connector 400 . Preferably, the two electrical connectors 500 are arranged along the width direction of the box body 600 of the battery box.

In some embodiments of the present application, the electrical connector 500 includes a second mounting base, a circuit connector and a connecting wire. The second mounting base is detachably provided on the mounting plate, the circuit connector is fixedly provided on the second mounting base, and the connecting wire Connect the circuit connector to the electrical components in the box 600 of the battery box. Optionally, the electrical components in the box 600 of the battery box are high-voltage boxes.

In some embodiments of the present application, the elastic component 300 includes a support spring and a support rod. The support rod is arranged vertically, one end of the support rod is fixedly connected to the fixing plate 200, and the other end is slidingly connected to the mounting plate 100. The support spring is sleeved with the support rod, and the two ends of the support spring are in contact with the fixing plate 200 and the installation plate 100 respectively. Specifically, the support rod is a double-headed stud, and a retaining ring is provided on the upper side of the lower threaded section of the support rod. The fixing plate 200 is provided with a first through hole, and the lower threaded section of the support rod penetrates into the first through hole, so that The retaining ring fits the upper side of the fixing plate 200, and the lower threaded section is connected to a lower nut at one end passing through the first through hole. Under the limiting action of the retaining ring and the lower nut, the support rod is fixedly connected to the fixing plate 200. The mounting plate 100 is provided with a sliding hole, and the upper threaded section of the support rod penetrates into the sliding hole and is connected to an upper nut. The upper nut can limit the upper side of the mounting plate 100 to prevent the mounting plate 100 from being separated from the support rod. The underside of the plate 100 is supported by support springs, and the mounting plate 100 can slide downward to compress the support springs.

Optionally, the upper end and lower end of the support rod are respectively provided with pin holes, and limit pins are inserted through the pin holes. The limit pins can prevent the upper nut and the lower nut from loosening.

Optionally, the fixing plate 200 is a trough-shaped plate structure with an opening downward, and the first through hole is provided on the top of the fixing plate 200, thereby facilitating the installation operation of the support rod.

In some embodiments of the present application, at least two fixed plates 200 are provided, and each fixed plate 200 is provided with at least one elastic component 300 respectively. Taking the structure shown in the figure as an example, there are four fixed plates 200, corresponding to the four corners of the installation plate 100. Each fixed plate 200 is provided with two elastic components 300, and each elastic component 300 is connected to the installation plate 100 respectively. It has a more stable supporting effect on the mounting plate 100 . An embodiment of the present application also provides a battery box, including a box body 600 and the above-mentioned quick-plug connector. An electro-hydraulic connection cavity 630 is provided in the box 600, and the quick-plug connector is arranged in the electro-hydraulic connection cavity 630.

Optionally, the electro-hydraulic connection cavity 630 is surrounded by a plurality of side plates, and an opening is formed on the upper side. The electro-hydraulic connection cavity 630 can provide an installation space for the pipeline in the quick-plug connector, and provide an activity space for the installation plate 100 . Furthermore, the side wall of the electro-hydraulic connection cavity 630 is formed by a concave bottom plate of the box 600, which has better structural strength and is easy to process.

Optionally, a support boss 640 is provided on the side wall of the electro-hydraulic connection cavity 630, and the fixing plate 200 is fixedly provided on the support boss 640. The support boss 640 can be disposed at the inner four corners of the electro-hydraulic connection cavity 630, and the fixing plate 200 is installed on the top surface of the support boss 640.

Optionally, the support boss 640 is provided with a threaded sleeve 641, and the threaded sleeve 641 is arranged vertically, It is provided with internal threads inside, and the fixing plate 200 is set at the top of the threaded sleeve 641. The fixing plate 200 is provided with a second through hole, and the second through hole is aligned with the threaded hole on the threaded sleeve 641. The fixing plate 200 is passed through the threaded sleeve 641. The second bolt is perforated and connected with the thread of the threaded sleeve 641, and is fixed on the support boss 640. Preferably, more than two threaded sleeves 641 are provided on the same support boss 640, more than two second through holes are provided corresponding to the threaded sleeves 641, and the same fixing plate 200 is fixed to the support by more than two bolts. on the boss 640, thereby increasing the installation firmness of the fixing plate 200.

In some embodiments of the present application, a circuit interface 650 and a pipeline interface 660 are provided at the bottom of the electro-hydraulic connection cavity 630. The circuit interface 650 can be used to route the electrical connector 500, and the pipeline interface 660 can be used to route the electrical connector 500. Set up the pipeline of liquid connector 400.

Optionally, in the pipeline of the liquid connector 400, the liquid supply pipe 430 and the liquid return pipe 440 are arranged in the electro-hydraulic connection cavity 630, and the liquid supply main pipe and the liquid return main pipe are located below the electro-hydraulic connection cavity 630. The liquid supply main pipe The connection joint with the liquid supply pipe 430 and the connection joint between the liquid return main pipe and the liquid return pipe 440 are located at the pipeline interface 660 .

The quick-plug connector and battery box provided by the embodiment of the present application can realize quick connection between battery systems, and realize floating adjustment at the connection position, which can ensure a good connection effect.

In other embodiments of the present application, the quick-plug connector of the embodiment of the present application is described with reference to Figures 6 to 12. The quick-plug connector of this embodiment can also be called a bottom connector. For the convenience of description, this embodiment will be referred to as The push-in connector in is also called a bottom connector. The bottom connector is applied to the battery box located at the bottom of the battery system, and is specifically installed at the bottom of the battery box body 10, and can cooperate with the connector on the top battery box of the battery system below to achieve vertical stacking. Electro-hydraulic connection between two battery systems.

It can be understood that the box 10 of the top battery box of the battery system located below is provided with a liquid supply plug, a liquid return plug connected to its internal cooling circulation pipeline, and a circuit plug connected to its internal circuit, which can be used with the implementation of the present application. Example of bottom connector plug fit.

The bottom connector according to the embodiment of the present application includes a first mounting base 1, a liquid supply interface 2, a liquid return interface 3 and an electrical plug-in interface 4 (which are included in the electrical connector 500 in Figure 1). The first mounting base 1 is suitable for fixed connection with the middle portion of the bottom plate of the battery box body 10 (equivalent to the mounting plate 100 in Figure 1 ). The liquid supply interface 2, the liquid return interface 3 and the plug-in interface 4 are fixedly arranged on the first mounting base 1 and penetrate the first mounting base 1 and the bottom plate of the battery box body 10. The liquid supply interface 2 is detachably connected to a liquid supply pipe, and is connected to the liquid supply hole 11 of the battery box body 10 and the coolant inlet of the battery module 17 in the battery box body 10 through the liquid supply pipe. The liquid return interface 3 is detachably connected to a liquid return pipe, and is connected to the liquid return hole 12 of the battery box body 10 and the coolant outlet of the battery module 17 in the battery box body 10 through the liquid return pipe. The plug-in interface 4 is connected to a copper bar 5, and the copper bar 5 is connected to the electrical devices in the box 10 of the battery box.

The bottom connector provided in this embodiment fixes the liquid supply interface, liquid return interface and plug-in interface at the bottom of the battery box through the first mounting base, which can facilitate the connection from the bottom of the battery box to the connectors on the top of other battery systems. , which can realize the combined use of vertical stacking between battery systems; the liquid supply pipe and the liquid return pipe can realize the liquid supply interface and the liquid return interface with the battery modules in the battery box where they are located and other components in the battery system. The connection of the battery box meets the overall cooling needs of the battery system; in addition, the liquid supply pipe and the liquid supply interface, as well as the liquid return pipe and the liquid return interface, are detachably connected, which can facilitate disassembly and assembly.

In an optional manner, the first mounting base 1 is detachably connected to the bottom plate of the battery box body 10 to facilitate the disassembly, assembly and maintenance of the bottom connector. The first mounting base 1 can be detachably connected to the middle portion of the bottom plate of the battery box body 10 by, for example, bolting or snapping. Preferably, a sealing gasket is provided between the first mounting base 1 and the middle portion of the bottom plate of the battery box body 10 to ensure the sealing of the installation position of the first mounting base 1 .

In another optional manner, the first mounting base 1 is integrally formed with the bottom plate of the battery box body 10 , which reduces production difficulty and improves the connection strength between the first mounting base 1 and the box body 10 and the sealing of the connection location.

In the embodiment of the present application, the liquid supply interface 2, the liquid return interface 3 and the plug-in interface 4 can all adopt a vertically arranged tubular structure. The bottom plate of the battery box 10 is provided with a mounting hole 15 in the middle, and the first mounting seat 1. Fix the liquid supply interface 2, liquid return interface 3 and plug-in interface 4 at the mounting hole 15, so that the battery systems can be connected through the mounting hole 15.

Optionally, there are at least two first mounting seats 1 , the liquid supply interface 2 and the liquid return interface 3 are provided on the same first mounting base 1 , and the plug-in interface 4 is provided on another first mounting base 1 . Taking the structure shown in the figure as an example, the box body 10 of the battery box is provided with three mounting holes 15. Each mounting hole 15 is fixed with a first mounting base 1, and the liquid supply interface 2 and the liquid return interface 3 are fixed in the middle. There are two plug-in interfaces 4 on the first mounting base 1 , and the two plug-in interfaces 4 are respectively located on the other two first mounting bases 1 . Preferably, the three first mounting seats 1 are arranged along the width direction of the box body 10 of the battery box.

Optionally, joints 9 are provided on the liquid supply interface 2, the liquid return interface 3, the liquid supply pipe and the liquid return pipe respectively, between the liquid supply interface 2 and the liquid supply pipe and between the liquid return interface 3 and the liquid return pipe. The joints 9 are detachably connected, and the joints 9 can be fixed by clamping, threaded connection, etc.

In the bottom connector of the embodiment of the present application, the liquid supply pipe can guide the cooling liquid supplied from the liquid supply interface 2 to the liquid supply hole 11 of the case 10 of the battery box, so as to supply it to other components in the battery system through the liquid supply hole 11 In the case 10 of the battery box, the cooling liquid can be directed to the battery module 17 in the box 10 of the battery box to cool the battery module 17 . The liquid return pipe can connect the electricity where it is located The coolant in the cell module 17 of the battery box 10 and the coolant in the boxes 10 of other battery boxes in the liquid return hole 12 are directed to the liquid return interface 3 .

It should be noted here that the cooling liquid is circulated between different battery boxes of the same battery system through the liquid supply hole 11 and the liquid return hole 12. Specifically, a liquid supply hole is provided on the side wall of the box 10 of each battery box. The liquid supply holes 11 and the liquid return holes 12 between the boxes 10 of adjacent battery boxes are connected to each other and the liquid return holes 12 are connected to each other. For example, the battery system includes three vertically stacked battery boxes, the top opening of the liquid supply hole 11 and the liquid return hole 12 of the battery box 10 located at the bottom, and the liquid supply hole 11 of the battery box 10 located in the middle. The upper and lower ends of the hole 11 and the liquid return hole 12 are opened respectively, and the liquid supply hole 11 and the liquid return hole 12 of the box 10 of the battery box located at the top are open at the lower end. The liquid supply holes 11 of the boxes 10 of the three battery boxes are aligned in the vertical direction so that the liquid supply holes 11 are connected to each other. After the liquid supply pipe supplies the coolant to the liquid supply holes 11 at the bottom, it can be connected along each supply hole. The liquid holes 11 are supplied to the boxes 10 of each battery box respectively; the liquid return holes 12 of the boxes 10 of the three battery boxes are aligned in the vertical direction, so that the liquid return holes 12 are connected with each other, and the cooling in each battery box is The liquid flows back to the liquid return pipe through the liquid supply hole 11 and is discharged through the liquid return interface 3 .

According to the bottom connector of the embodiment of the present application, the liquid supply pipeline includes a main liquid supply pipe 6 and a partial liquid supply pipe 7. One end of the main liquid supply pipe 6 is connected to the liquid supply interface 2, the other end is connected to the liquid supply hole 11, and the partial liquid supply pipe 7 is connected to the liquid supply. The coolant inlet of the main pipe 6 and the cell module 17 in the box body 10 of the battery box. After the coolant flowing in from the liquid supply interface 2 flows into the liquid supply main pipe 6, part of it flows into the liquid supply hole 11 along the liquid supply main pipe 6, and the other part flows into the liquid supply hole 11 along the liquid supply main pipe 6. A part is supplied to the cell module 17 in the box 10 of the battery box through the liquid supply pipe 7 . The liquid return pipeline includes a liquid return main pipe 18 and a liquid return branch pipe 8. One end of the liquid return main pipe 18 is connected to the liquid return interface 3, and the other end is connected to the liquid return hole 12. The liquid return branch pipe 8 is connected to the liquid return main pipe 18 and the inside of the battery box 10. The coolant outlet of the battery module 17, the coolant in the box 10 of the upper battery box flows into the liquid return pipe 18 through the liquid return hole 12, and the coolant in the battery module 17 in the box 10 of the bottom battery box flows The coolant flows into the liquid return main pipe 18 through the liquid return branch pipe 8, and the liquid return main pipe 18 guides the returned coolant into the return interface.

Optionally, the liquid supply branch pipe 7 includes a first pipe section 7a (also called the first liquid supply branch pipe 471 in Figure 1) and a second pipe section 7b (also called the second liquid supply branch pipe 472 and 472 in Figure 1). The third liquid supply branch pipe 473), one end of the first pipe section 7a is connected to the middle part of the liquid supply main pipe 6, and the other end is connected to the middle part of the second pipe section 7b; the liquid return branch pipe 8 includes a third pipe section 8a (which can also be called the third pipe section 8a in Figure 1 The first liquid return branch pipe 481) and the fourth pipe section 8b (can also be called the second liquid return branch pipe 482 and the third liquid return branch pipe 483 in Figure 1), one end of the third pipe section 8a is connected to the middle part of the liquid return main pipe 18, The other end is connected to the middle of the fourth pipe section 8b; the connection between the first pipe section 7a and the liquid supply main pipe 6 and the second pipe section 7b and between the third pipe section 8a and the liquid return pipe section and the fourth pipe section 8b can be detachably connected through the joint 9 connect.

The second pipe section 7b and the fourth pipe section 8b are separated in the width direction of the inner cavity of the battery box 10 on both sides of the battery box and extending along the length direction of the battery box body 10 respectively. The second pipe section 7b is suitable for connecting the cooling liquid inlet of the battery cell module 17, and the fourth pipe section 8b is suitable for connecting the cooling liquid outlet of the battery cell module 17.

Optionally, at least two joints 9 are provided on the second pipe section 7b and the fourth pipe section 8b respectively. The joints 9 on the second pipe section 7b and the fourth pipe section 8b correspond to each other. The joints 9 are suitable for connecting to the box 10 of the battery box. The cooling pipe of the cell module 17 inside. Therefore, more than two battery cell modules 17 in the box 10 of the battery box can be connected simultaneously through the second pipe section 7b and the fourth pipe section 8b.

The embodiment of the present application also provides a battery box, which includes a box body 10 and the above-mentioned bottom connector. A liquid supply hole 11 and a liquid return hole 12 are provided on the side wall of the box body 10 , and the bottom connector is provided in the box body 10 .

A plurality of battery core modules 17 can be arranged in the box 10 along the length direction of the box 10 . The first mounting base 1 , the liquid supply interface 2 , the liquid return interface 3 and the plug-in interface 4 are arranged on the two battery cells located in the middle. between modules 17.

Optionally, the bottom plate of the box 10 is provided with fixed ribs 13. The fixed ribs 13 are provided with threaded holes. The copper bars 5 are connected to the threaded holes through bolts to be fixed on the fixed ribs 13. The fixed ribs 13 are provided with threaded holes. The strips 13 can support the copper bars 5 . Preferably, the fixing ribs 13 are integrally formed with the box body 10, which has better firmness and is easy to produce.

Optionally, the middle part of the bottom plate of the box 10 is provided with an electro-hydraulic connection cavity recessed into the box 10. The bottom of the electro-hydraulic connection cavity is called a mounting plate 14. The mounting plate 14 is provided with a mounting hole 15 and a first mounting seat. 1 is fixed at the mounting hole 15. The lower side of the mounting plate 14 can form an avoidance space, and the connectors of the battery systems located below can be connected to the bottom connectors in the avoidance space, thereby ensuring that adjacent battery systems fit together.

Optionally, a pair of limiters 16 is provided in the box 10. Along the length direction of the box 10, the pair of limiters 16 are located on both sides of the electro-hydraulic connection cavity. The electro-hydraulic connection cavity and a pair of limiters Battery installation positions are respectively formed between the platforms 16. The battery installation positions can be used to install the battery module 17. The electro-hydraulic connection cavity and the limiting platform 16 play a role in limiting the battery module 17 to ensure that the battery module 17 is installed properly. stability. Preferably, the limiting platform 16 is formed by an inward recess of the bottom plate of the box 10 to ensure the firmness and sealing of the overall structure of the battery box.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

A quick-plug connector, characterized by including:

A mounting plate, the mounting plate is provided with mounting holes;

A first mounting base, the first mounting base is provided on the mounting plate through the mounting hole; and

An electrical connector and a liquid connector are provided on the first mounting base. The electrical connector is used to realize the circuit connection between adjacent battery boxes, and the liquid connector is used to realize the water path between adjacent battery boxes. connect.
The quick-plug connector according to claim 1, further comprising:

a fixing plate, the fixing plate is suitable for being fixedly arranged in the box of the battery box; and

Elastic components are respectively connected to the installation plate and the fixed plate, and the elastic components elastically support the installation plate in a direction away from the fixed plate.
The quick-plug joint according to claim 2, wherein the elastic component includes a support spring and a support rod, one end of the support rod is fixedly connected to the fixed plate, and the other end of the support rod is connected to the fixed plate. The mounting plate is slidingly connected, the support spring is sleeved with the support rod, and the two ends of the support spring are in contact with the fixed plate and the mounting plate respectively.
The quick-plug joint according to claim 2 or 3, characterized in that at least two of the fixing plates are provided, and each of the fixing plates is provided with at least one of the elastic components.
The quick-plug connector according to any one of claims 2 to 4, wherein the mounting plate is adapted to be slidably disposed on the upper side of the battery box.
The quick-plug connector according to any one of claims 1 to 5, characterized in that the electrical connector includes a plug-in interface, the plug-in interface is connected to a copper bar, and the copper bar is connected to the battery box. The electrical components in the box are electrically connected.
The quick-plug joint according to any one of claims 1 to 6, characterized in that the liquid connector includes:

A plug-in part is provided on the first mounting base. The plug-in part is provided with a liquid supply plug-in pipe and a liquid return plug-in pipe that are parallel to each other. The liquid supply plug-in pipe and the liquid return plug-in pipe run through the The first mounting base and the mounting plate, one end of the liquid supply plug-in pipe and one end of the liquid return plug-in pipe are located outside the first mounting base, and the other end of the liquid supply plug-in pipe and the return liquid plug-in pipe are The other end of the liquid plug pipe is located in the first mounting seat;

A liquid supply pipe, the liquid supply pipe is detachably connected to the liquid supply plug pipe; and

Liquid return pipe, the liquid return pipe is detachably connected to the liquid return plug-in pipe.
The quick plug connector according to claim 7, characterized in that the first mounting base is provided with There are at least two, the liquid supply plug-in pipe and the liquid return plug-in pipe are arranged on the same first mounting base, and the electrical connector is arranged on the other first mounting base.
The quick-plug joint according to claim 7 or 8, characterized in that the liquid supply pipe includes a liquid supply pipe, and the liquid supply pipe is connected to one end of the liquid supply plug-in pipe located in the first mounting seat. ;

The liquid return pipe includes a liquid return pipe, and the liquid return pipe is connected to one end of the liquid return plug-in pipe located in the first mounting seat.
The quick-plug joint according to claim 9, characterized in that the liquid supply pipeline further includes: a main liquid supply pipe and a branch liquid supply pipe; the liquid return pipe further includes: a main liquid return pipe and a branch liquid return pipe;

One end of the main liquid supply pipe is connected to the liquid supply pipe, and the other end of the main liquid supply pipe is suitable for connecting to the liquid supply hole on the body of the battery box;

One end of the liquid return main pipe is connected to the liquid supply pipe, and the other end of the liquid return main pipe is suitable for connecting to the liquid return hole on the box body of the battery box;

The liquid supply branch pipe communicates with the liquid supply main pipe and the cooling liquid inlet of the battery module located in the battery box;

The liquid return branch pipe communicates with the liquid return main pipe and the cooling liquid outlet of the battery module located in the battery box.
The quick-plug joint according to claim 10, wherein the liquid supply pipe and the liquid return pipe respectively include at least two-way pipes, and the liquid supply pipe and the liquid return pipe are along the battery box. The width direction of the box is located on different sides of the first mounting base.
The quick-plug joint according to claim 11, characterized in that when the liquid supply branch pipe and the liquid return branch pipe respectively include two-way pipes, the two-way pipes of the liquid supply branch pipe include: a first pipe section and a third pipe section. Two pipe sections, the two-way pipe of the liquid return branch includes: a third pipe section and a fourth pipe section,

One end of the first pipe section is connected to the middle part of the liquid supply main pipe, and the other end of the first pipe section is connected to the middle part of the second pipe section; one end of the third pipe section is connected to the middle part of the liquid return main pipe, so The other end of the third pipe section is connected to the middle part of the fourth pipe section; the second pipe section and the fourth pipe section are placed on both sides of the inner cavity of the battery box in the width direction, and are respectively arranged along the The battery box extends in the length direction of the box body.
The quick-plug joint according to claim 12, characterized in that at least two joints are respectively provided on the liquid supply branch pipe and the liquid return branch pipe, and the at least two joints are suitable for connecting the box of the battery box. The cooling tube of the battery module inside the body.
The quick-plug joint according to claim 13, characterized in that at least two joints on the liquid supply pipe are provided on the second pipe section, and at least two joints on the liquid return pipe are provided on the second pipe section. On the fourth pipe section.
The quick-plug joint according to any one of claims 1 to 14, characterized in that the electrical connector and/or the liquid connector are detachably connected to the mounting plate.
The quick-plug joint according to any one of claims 1 to 15, characterized in that there are three first mounting seats, and two of the three first mounting seats are on One of the electrical connectors is provided respectively, the liquid connector is provided on one of the three first mounting seats, and two of the electrical connectors are respectively located on the liquid connection both sides of the device.
The quick-plug joint according to any one of claims 1 to 16, characterized in that the first mounting seat and the mounting plate are detachably connected, or the first mounting seat and the mounting plate Integrated molding, or the first mounting seat is fixedly connected to the middle part of the mounting plate.
A battery box, characterized in that it includes a box body and a quick-plug connector according to any one of claims 1 to 17 provided in the box body.
The battery box according to claim 18, characterized in that an electro-hydraulic connection cavity is provided in the box, and the quick-plug connector is arranged at the position of the electro-hydraulic connection cavity.
The battery box according to claim 19, characterized in that a pair of limiting platforms are provided in the box, and the pair of limiting platforms are respectively placed in the electro-hydraulic connection cavity along the length direction of the box. On both sides of the battery, battery installation positions are respectively formed between the electro-hydraulic connection cavity and a pair of limiting platforms.
The battery box according to claim 19 or 20, characterized in that a support boss is provided on the side wall of the electro-hydraulic connection chamber, and the fixing plate in the quick-plug connector is fixedly provided on the support boss. .
The battery box according to claim 21, characterized in that a threaded casing is provided on the support boss, and the fixing plate is provided at the top of the threaded casing and is connected to the threaded casing through threads. The bolts are fixed on the support boss.
The battery box according to any one of claims 18 to 22, characterized in that a liquid supply hole and a liquid return hole are provided on the side wall of the box body.
The battery box according to any one of claims 18 to 23, wherein the mounting plate in the quick-plug connector is provided with fixed ribs, and the fixed ribs are provided with threaded holes. The copper bars in the plug connector are connected to the bolts threaded in the threaded holes to be fixed on the fixing ribs.