Connector and portable energy storage device

Abstract

The embodiment of the utility model discloses a connector and portable energy storage equipment, the connector is applied to the portable energy storage equipment, the connector comprises a main body part, a high-voltage connecting assembly and a low-voltage connecting assembly, the high-voltage connecting assembly comprises a high-voltage plug-in terminal and a high-voltage butt-joint metal bar, the high-voltage plug-in terminal and the high-voltage butt-joint metal bar are both arranged on the main body part, and the high-voltage plug-in terminal and the high-voltage butt-joint metal bar are arranged on the main body part. The high-voltage plug-in terminal is electrically connected with the high-voltage butt-joint metal bar; the low-voltage connecting assembly comprises low-voltage plugging terminals and a low-voltage flat cable port, the low-voltage plugging terminals and the low-voltage flat cable port are both arranged on the main body part, the low-voltage plugging terminals are electrically connected with the low-voltage flat cable port, and the high-voltage plugging terminals and the low-voltage plugging terminals are arranged at intervals and have the same plugging direction. According to the connector, the high-voltage connecting assembly and the low-voltage connecting assembly are integrated, when the connector is used, power transmission and communication transmission can be achieved only by being connected with one connector of the connector in a pluggable mode, the functions are comprehensive, and use is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage power supply, and in particular to a connector and a portable energy storage device. Background Art

[0002] In the related art, portable energy storage devices can store electricity and are easy to carry. Therefore, they are used when people travel long distances or play outdoors, providing convenience and enriching people's daily lives.

[0003] However, the power output interface and signal interface of the portable energy storage device are usually separately arranged, so the integration is poor and the space occupied is large. Utility Model Content

[0004] The embodiments of the present application provide a connector and a portable energy storage device, which have a high degree of integration and occupy a small space.

[0005] In a first aspect, an embodiment of the present application provides a connector for use in a portable energy storage device, the connector comprising a main body, a high-voltage connection assembly and a low-voltage connection assembly, the high-voltage connection assembly comprising a high-voltage plug-in terminal and a high-voltage docking metal bus, the high-voltage plug-in terminal and the high-voltage docking metal bus are both arranged on the main body, the high-voltage plug-in terminal is electrically connected to the high-voltage docking metal bus; the low-voltage connection assembly comprises a low-voltage plug-in terminal and a low-voltage cable port, the low-voltage plug-in terminal and the low-voltage cable port are both arranged on the main body, the low-voltage plug-in terminal is electrically connected to the low-voltage cable port, the high-voltage plug-in terminal and the low-voltage plug-in terminal are spaced apart and have the same plugging direction.

[0006] The connector of the embodiment of the present application integrates a high-voltage connection component and a low-voltage connection component. When in use, it only needs to be plugged in and out with one connector to achieve power transmission and communication transmission. The connector has a high degree of integration and a small size.

[0007] In the second aspect, an embodiment of the present application provides a portable energy storage device, the portable energy storage device comprising a battery cell assembly, an electric control board, a thermal insulation member and a connector, the electric control board and the battery cell assembly being spaced apart, the electric control board and the battery cell assembly being electrically connected; the thermal insulation member being arranged between the battery cell assembly and the electric control board; the high-voltage docking metal bus and the low-voltage wiring port being electrically connected to the electric control board.

[0008] The heat insulating member provided in the embodiment of the present application can play a role of heat insulation, thereby reducing the heat transferred from the BMS module to the battery cell assembly and improving the safety of the battery cell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 This is a schematic diagram of the structure of a portable energy storage device in one embodiment of the present application;

[0011] Figure 2 This is a schematic diagram of the structure of a connector in an embodiment of the present application;

[0012] Figure 3 This is a schematic diagram of the structure of a connector in another embodiment of the present application;

[0013] Figure 4 This is a schematic diagram of the structure of a connector and an external connector in one embodiment of the present application;

[0014] Figure 5 This is a schematic structural diagram of a portable energy storage device in another embodiment of the present application;

[0015] Figure 6 This is a schematic structural diagram of a portable energy storage device in another embodiment of the present application;

[0016] Figure 7 This is a schematic structural diagram of a portable energy storage device in another embodiment of the present application;

[0017] Figure 8 A cross-sectional schematic diagram of a portable energy storage device in an embodiment of the present application;

[0018] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure at A in the middle;

[0019] Fig.10 This is a schematic structural diagram of a portable energy storage device in another embodiment of the present application;

[0020] Fig.11 for Fig.10 A schematic diagram of the enlarged structure at B in the middle;

[0021] Fig.12 This is a schematic structural diagram of a portable energy storage device in another embodiment of the present application;

[0022] Fig.13 for Fig.12 Schematic diagram of the enlarged structure at C in the middle;

[0023] Fig.14is a cross-sectional schematic diagram of a portable energy storage device in another embodiment;

[0024] Fig.15 for Fig.14 Schematic diagram of the enlarged structure at D in the middle.

[0025] Description of reference numerals: 10, portable energy storage device; 100, connector; 110, main body; 110a, card slot; 111, circuit board; 112, mounting seat; 120, high-voltage connection assembly; 121, high-voltage plug terminal; 1211, positive plug terminal; 1212, negative plug terminal; 122, high-voltage docking metal bar; 1221, positive metal bar; 1222, negative metal bar; 130, low-voltage connection assembly; 131, low-voltage plug terminal; 1311 , low-voltage sub-terminal; 132, low-voltage cable port; 200, battery cell assembly; 210, battery cell bracket; 210a, opening; 211, limiter; 212, shielding part; 220, battery cell; 220a, explosion-proof hole; 230, bolt; 300, electronic control board; 400, thermal insulation; 500, heat sink; 510, flexible thermal pad; 520, metal heat sink fin; 600, external connector; 610, hook; 700, high-voltage connecting metal bus; 800, low-voltage cable. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] like Figure 1-4 As shown, a first aspect of an embodiment of the present application provides a portable energy storage device 10, and the portable energy storage device 10 includes a battery cell assembly 200, an electric control board 300, and a connector 100. The portable energy storage device 10 can be exemplarily an outdoor power source, etc.

[0028] The battery cell assembly 200 is used for energy storage, and the battery cell assembly 200 can be exemplarily a battery pack. When the portable energy storage device 10 is connected to a power source, the power source can charge the battery cell assembly 200. When the portable energy storage device 10 is connected to an external load, the battery cell assembly 200 can discharge the external load.

[0029] The electric control board 300 is spaced apart from the battery cell assembly 200, and the electric control board 300 is electrically connected to the battery cell assembly 200. The electric control board 300 has a BMS (Battery Management System) module, which is used to manage and maintain the battery cell assembly 200, prevent the battery cell assembly 200 from overcharging and overdischarging, extend the service life of the battery cell assembly 200, and monitor the status of the battery cell assembly 200.

[0030] The connector 100 is used to connect to an external load or power supply to realize the function of charging or external discharge. Since the connector 100 needs to switch between the power supply and different external loads, the connector 100 needs to be conveniently connected to the power supply and different external loads. Exemplarily, the connector 100 is connected to the power supply and different external loads by plugging and unplugging, so as to facilitate the connection or disassembly of the connector 100 with the power supply and different external loads. It can be understood that the power supply and the external load both have an external connector 600, and the connector 100 is electrically connected to the power supply and the external load through the external connector 600. Of course, multiple portable energy storage devices 10 can also be electrically connected through the external connector 600 to discharge together.

[0031] Exemplarily, the connector 100 includes a main body 110, a high-voltage connection assembly 120, and a low-voltage connection assembly 130. The main body 110 is used to install the high-voltage connection assembly 120 and the low-voltage connection assembly 130.

[0032] The high-voltage connection assembly 120 is used to transmit electricity. The high-voltage connection assembly 120 includes a high-voltage plug-in terminal 121 and a high-voltage docking metal bar 122. The high-voltage plug-in terminal 121 and the high-voltage docking metal bar 122 are both arranged on the main body 110, and the high-voltage plug-in terminal 121 is electrically connected to the high-voltage docking metal bar 122. The high-voltage plug-in terminal 121 is used for plugging and unplugging with a power supply and an external load, and the high-voltage docking metal bar 122 is used to be electrically connected to the electric control board 300. Exemplarily, the portable energy storage device 10 also includes a high-voltage connection metal bar 700, one end of the high-voltage connection metal bar 700 is connected to the electric control board 300, and the other end is connected to the high-voltage docking metal bar 122. The connection method of the high-voltage connection metal bar 700 and the electric control board 300 can be welding, screwing, etc. The connection method of the high-voltage connection metal bar 700 and the high-voltage docking metal bar 122 can be welding, screwing, etc.

[0033] When the high-voltage plug terminal 121 is connected to a power source, the current output by the power source flows into the battery cell assembly 200 through the high-voltage plug terminal 121, the high-voltage butt metal bar 122, and the electric control board 300 in sequence. When the high-voltage plug terminal 121 is connected to an external load, the current output by the battery cell assembly 200 flows to the external load through the electric control board 300, the high-voltage butt metal bar 122, and the high-voltage plug terminal 121 in sequence.

[0034] The low-voltage connection assembly 130 is used to transmit signals. The low-voltage connection assembly 130 includes a low-voltage plug terminal 131 and a low-voltage cable port 132. The low-voltage plug terminal 131 and the low-voltage cable port 132 are both arranged on the main body 110, and the low-voltage plug terminal 131 is electrically connected to the low-voltage cable port 132. Exemplarily, the portable energy storage device 10 also includes a low-voltage cable 800, one end of the low-voltage cable 800 is connected to the electric control board 300, and the other end is connected to the low-voltage cable port 132. The connection method of the low-voltage cable 800 and the electric control board 300 can be plug-in, and the connection method of the low-voltage cable 800 and the low-voltage cable port 132 can be plug-in, so as to facilitate assembly and maintenance.

[0035] When the low voltage plug terminal 131 is connected to a power source, the electric control board 300 can communicate with the power source and adjust the charging parameters according to the charging protocol. When the low voltage plug terminal 131 is connected to an external load, the electric control board 300 can communicate with the external load and adjust the discharge parameters according to the discharge protocol.

[0036] The high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131 are arranged at intervals, thereby preventing the high-voltage plug-in terminal 121 from interfering with the low-voltage plug-in terminal 131 and reducing the probability of a circuit breaker between the high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131. The high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131 have the same plugging direction, that is, the high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131 are parallel to each other, so that when the connector 100 is connected to a power source or an external load, the high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131 can be turned on or off synchronously.

[0037] In summary, the portable energy storage device 10 of the embodiment of the present application has a connector 100, and the connector 100 is integrated with a high-voltage connection component 120 and a low-voltage connection component 130. When in use, it only needs to be plugged in and out with the connector 100 to achieve power transmission and communication transmission, which is more convenient to use. At the same time, the connector 100 has a high degree of integration, which can reduce the volume of the connector 100, improve assembly efficiency, and reduce costs. In addition, the openings of the body of the portable energy storage device 10 can also be reduced, so that the body has better integrity and better waterproof and other properties.

[0038] like Figure 2 and Figure 3As shown, in some embodiments, the main body 110 includes a circuit board 111 and a mounting seat 112 disposed on the circuit board 111, and a high-voltage docking metal bar 122 is mounted on the circuit board 111. It should be noted that the current that the circuit board 111 can withstand is usually small, so the high-voltage docking metal bar 122 is not electrically connected to the circuit board 111, and the circuit board 111 only supports and insulates the high-voltage docking metal bar 122. One end of the high-voltage plug terminal 121 abuts against the high-voltage docking metal bar 122, that is, the high-voltage plug terminal 121 is directly connected to the high-voltage docking metal bar 122, thereby improving the conductivity, reducing the use of materials, and saving costs. The connection method between the high-voltage plug terminal 121 and the high-voltage docking metal bar 122 can be exemplarily welding, screw connection, etc.

[0039] The high-voltage plug-in terminal 121 and the high-voltage docking metal row 122 are arranged vertically. It can be understood that the high-voltage docking metal row 122 is plate-shaped and the high-voltage plug-in terminal 121 is rod-shaped. Since the high-voltage plug-in terminal 121 needs to withstand a large current, the high-voltage plug-in terminal 121 is thicker. The high-voltage plug-in terminal 121 and the high-voltage docking metal row 122 are arranged vertically to increase the contact area between the two, so that the high-voltage plug-in terminal 121 is in full contact with the high-voltage docking metal row 122, thereby reducing the resistance at the connection between the high-voltage plug-in terminal 121 and the high-voltage docking metal row 122 and improving the conductive efficiency.

[0040] The mounting seat 112 is used to support and protect the high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131, and the high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131 are both arranged on the mounting seat 112. At the same time, the main body 110 can also provide a good insulation effect between the high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131, avoiding crosstalk between the high-voltage plug-in terminal 121 and the low-voltage plug-in terminal 131. The material of the mounting seat 112 can be plastic, which has good insulation performance and is easy to process and shape.

[0041] The low voltage cable port 132 is disposed on the circuit board 111 and is electrically connected to the low voltage plug terminal 131 through the circuit board 111. The low voltage cable port 132 is electrically connected to the circuit board 111, for example, one end of the low voltage cable port 132 can be welded to a solder joint on the circuit board 111.

[0042] In some embodiments, the outer contour of the main body 110 forms a limiting structure, which is used to limit the alignment direction of the connector 100 and the external connector 600 when plugged in. For example, the outer contour of the main body 110 is an asymmetric shape, and when the external connector 600 and the connector 100 are plugged in, it is necessary to distinguish the front and back to avoid plugging in the wrong direction.

[0043] In some embodiments, a limiting structure is provided on the main body 110, for example, a limiting groove is provided on the main body 110, and a limiting protrusion corresponding to the limiting groove is provided on the external connector 600. When the limiting protrusion is aligned with the limiting groove, the external connector 600 can be inserted into the connector 100. When the limiting protrusion is not aligned with the limiting groove, the external connector 600 cannot be inserted into the connector 100.

[0044] like Figure 4 As shown, in some embodiments, the main body 110 is provided with a snap-in groove 110a for snapping with the external connector 600, and a snap hook 610 corresponding to the snap-in groove 110a may be provided on the external connector 600. When the external connector 600 is plugged and matched with the connector 100, the snap hook 610 cooperates with the snap-in groove 110a to prevent the external connector 600 from being separated from the connector 100. When the external connector 600 needs to be unplugged from the connector 100, the snap hook 610 is pushed to make the snap hook 610 escape from the snap-in groove 110a, so that the external connector 600 and the connector 100 can be separated. In some alternative structures, the main body 110 is provided with a snap hook 610, and the external connector 600 is provided with a snap-in groove 110a accordingly.

[0045] like Figure 2 and Figure 3 As shown, in some embodiments, the high-voltage plug terminal 121 includes a positive plug terminal 1211 and a negative plug terminal 1212. Due to the provisions of safety regulations, the positive plug terminal 1211 and the negative plug terminal 1212 need to be spaced apart from each other. The high-voltage docking metal bar 122 includes a positive metal bar 1221 and a negative metal bar 1222. Similarly, the positive metal bar 1221 and the negative metal bar 1222 are spaced apart from each other, the positive plug terminal 1211 is electrically connected to the positive metal bar 1221, and the negative plug terminal 1212 is electrically connected to the negative metal bar 1222. The low-voltage plug terminal 131 is arranged between the positive plug terminal 1211 and the negative plug terminal 1212, so as to make full use of the space, reduce the volume of the connector 100, and improve the integration of the connector 100. The low-voltage cable port 132 is disposed between the positive metal bar 1221 and the negative metal bar 1222 , thereby fully utilizing the space, reducing the volume of the connector 100 , and improving the integration of the connector 100 .

[0046] In some embodiments, the positive plug terminal 1211 includes a plurality of positive sub-terminals, each of which is electrically connected to the positive metal row 1221, and the negative plug terminal 1212 includes a plurality of negative sub-terminals, each of which is electrically connected to the negative metal row 1222. Any two positive sub-terminals are arranged at intervals, so that the heat dissipation effect of the positive plug terminal 1211 can be enhanced, so that the positive plug terminal 1211 can carry a larger current. Any two negative sub-terminals are arranged at intervals, so that the heat dissipation effect of the negative plug terminal 1212 can be enhanced, so that the negative plug terminal 1212 can carry a larger current. Any positive sub-terminal and any negative sub-terminal are arranged at intervals to avoid short circuits between the positive and negative poles.

[0047] Optionally, the positive plug-in terminal 1211 includes two positive sub-terminals, and the negative plug-in terminal 1212 includes two negative sub-terminals.

[0048] like Figure 3 As shown, in some embodiments, the low-voltage plug-in terminal 131 includes multiple low-voltage sub-terminals 1311, and the multiple low-voltage sub-terminals 1311 can transmit complex signals, or half of the multiple low-voltage sub-terminals 1311 are backup for the other half, thereby having higher stability.

[0049] In some embodiments, the main body 110 is provided with a plurality of mutually spaced positive electrode mounting holes, a plurality of mutually spaced negative electrode mounting holes, and a plurality of mutually spaced low voltage mounting holes. The plurality of positive electrode mounting holes are concentrated in the first area of ​​the main body 110, the plurality of negative electrode mounting holes are concentrated in the second area of ​​the main body 110, and the plurality of low voltage mounting holes are concentrated in the third area of ​​the main body 110, so as to avoid mutual interference. A positive sub-terminal is provided in each positive electrode mounting hole, a negative sub-terminal is provided in each negative electrode mounting hole, and a low voltage sub-terminal 1311 is provided in each low voltage mounting hole. In this embodiment, the plug-in type of the main body 110 is a female plug, so as to facilitate docking with the external connector 600.

[0050] like Figure 5 As shown, in some embodiments, the portable energy storage device 10 further includes a heat insulating member 400, which is disposed between the battery cell assembly 200 and the electric control board 300. It is understandable that the electric control board 300 generates heat when working, especially the BMS module generates relatively large heat. If the heat of the BMS module is transferred to the battery cell assembly 200, it will have an adverse effect on the battery cell assembly 200, reducing the safety of the battery cell 220 module. Therefore, the provision of the heat insulating member 400 can play a role in heat insulation, thereby reducing the heat transferred from the BMS module to the battery cell assembly 200 and improving the safety of the battery cell 220 module.

[0051] The material of the thermal insulation member 400 may be, for example, aerogel. Aerogel has good thermal insulation properties, is relatively light, and has an insulating effect, and is suitable for the portable energy storage device 10 .

[0052] like Figure 6 and Figure 7 As shown, in some embodiments, the portable energy storage device 10 further includes a heat sink 500 and a stopper 211, and the heat sink 500 is pressed against the surface of the electric control board 300 away from the heat insulating member 400. The electric control board 300 has a plurality of components. In order to make the heat sink 500 fit closely with the components, the heat sink 500 generally includes a flexible thermal pad 510, and the flexible thermal pad 510 can be deformed to a certain extent, so as to fit closely to the components and improve the heat conduction effect. It is understandable that the heat sink 500 can also include metal heat sink fins 510, and the metal heat sink fins 510 are arranged on the flexible thermal pad 510 to improve the heat dissipation effect. The heat generated by the BMS module on the electric control board 300 is relatively large, and the heat sink 500 can only press against the BMS module, or it can press against the entire electric control board 300. If the heat sink 500 is pressed too much, it is easy to press the components.

[0053] Therefore, by setting the stopper 211, the stopper 211 protrudes from the surface of the electric control board 300 away from the heat insulating member 400, and the stopper 211 abuts against the heat sink 500 to fix the heat sink 500. That is, the stopper 211 bears part of the abutting pressure of the heat sink 500, thereby reducing the abutting pressure borne by the components, thereby reducing the probability of damage to the components. It should be noted that the stopper 211 can be set on the circuit board 111, and can also be set on other components of the portable energy storage device 10.

[0054] like Figure 8-9 As shown, exemplarily, the stopper 211 can be a screw hole column, the electric control board 300 is provided with a first through hole corresponding to the screw hole column, the flexible thermal pad 510 is provided with a second through hole corresponding to the threaded column, and the screw hole column passes through the first through hole and the second through hole in sequence and then abuts against the metal heat sink fin 510. The screw hole column has a threaded hole, and the metal heat sink fin 510 is provided with a third through hole corresponding to the threaded hole. The bolt 230 passes through the third through hole and then is screwed with the threaded hole, so that the metal heat sink fin 510 can be pressed against the screw hole column. As a result, the distance between the metal heat sink fin 510 and the electric control board 300 is fixed, and when the bolt 230 is tightened, the metal heat sink fin 510 will not move toward the electric control board 300. By reasonably setting the distance value between the metal heat sink fin 510 and the electric control board 300, the pressure of the flexible thermal pad 510 on the electric control board 300 can be controlled within an appropriate range.

[0055] like Figure 10-13As shown, in some embodiments, the battery cell assembly 200 includes a battery cell holder 210 and a battery cell 220, and the battery cell 220 is arranged on the battery cell holder 210, and the battery cell holder 210 plays a role of fixing and supporting the battery cell 220. It is understandable that the number of battery cells 220 is usually multiple, and multiple battery cells 220 are connected in series, parallel or mixed. The shape of the battery cell 220 can be rectangular, cylindrical, etc. The battery cell 220 can be illustratively a lithium battery, for example, the battery cell 220 is a 18650 battery.

[0056] The battery cell 220 is electrically connected to the electric control board 300, and the electric control board 300 can individually control the charging and discharging of each battery cell 220. In order to reduce the probability of explosion of the battery cell 220, an explosion-proof plate and an explosion-proof hole 220a corresponding to the explosion-proof plate are provided at one end of the battery cell 220. When the internal pressure of the battery cell 220 exceeds a preset value, the explosion-proof plate of the battery cell 220 explodes to release the pressure, and the gas-liquid mixture inside the battery cell 220 is ejected through the explosion-proof hole 220a, thereby avoiding a violent explosion of the battery cell 220.

[0057] like Figure 12-15 As shown, the cell holder 210 is provided with a shielding portion 212 corresponding to the explosion-proof hole 220a, and the shielding portion 212 shields part of the explosion-proof hole 220a. For example, the cell holder 210 is provided with a through hole corresponding to the explosion-proof hole 220a, and only part of the through hole overlaps with the explosion-proof hole 220a, that is, the other part of the through hole is shielded by the shielding portion 212.

[0058] If the explosion-proof hole 220a is not blocked, the high-temperature material ejected from the battery cell 220 will all accumulate outside the battery cell holder 210, which may cause chain heat diffusion of the adjacent battery cells 220, thereby causing thermal runaway of the entire battery cell 220 module.

[0059] In this embodiment, the explosion-proof hole 220a is shielded by the shielding portion 212. When a certain battery cell 220 fails due to heat, the shielding portion 212 diverts the gas-liquid mixture sprayed from the battery cell 220, so that a part of the gas-liquid mixture is sprayed between the battery cell 220 and the battery cell bracket 210 (such as Fig.15 The other part of the gas-liquid mixture is sprayed to the outside of the battery cell holder 210 , thereby reducing the probability of failure of other battery cells 220 .

[0060] In some embodiments, the flow cross-sectional area of ​​the explosion-proof hole 220a blocked by the blocking portion 212 is less than or equal to half of the flow cross-sectional area of ​​the explosion-proof hole 220a.

[0061] It is understandable that if the shielding portion 212 completely blocks the explosion-proof hole 220a, when the battery cell 220 fails due to heat, the gas-liquid mixture ejected by the battery cell 220 will gather inside the battery cell 220 and the battery cell holder 210, thereby causing an instantaneous excessive local pressure, which may cause the battery cell 220 or the battery cell holder 210 to burst. It has been found through many practices that the flow cross-sectional area of ​​the explosion-proof hole 220a blocked by the shielding portion 212 is less than or equal to half of the flow cross-sectional area of ​​the explosion-proof hole 220a. When the battery cell 220 fails due to heat, the shielding portion 212 can divert the gas ejected by the failed battery cell 220, and prevent the battery cell 220 or the battery cell holder 210 from bursting due to excessive pressure.

[0062] In some embodiments, the stopper 211 is disposed on the cell support 210, and the electric control board 300 is provided with a through hole, through which the stopper 211 passes to abut against the heat sink 500. Furthermore, a screw hole is provided on the stopper 211, and the heat sink 500 is screwed to the stopper 211.

[0063] In some embodiments, a single battery cell 220 has multiple explosion-proof holes 220a, and the shielding portion 212 has the same shielding area for each explosion-proof hole 220a, thereby preventing some explosion-proof holes 220a from being completely blocked and affecting the pressure relief of the battery cell 220.

[0064] In some embodiments, the cell holder 210 is provided with a mounting groove, the cell 220 is disposed in the mounting groove, and there is a gap between the outer wall of the cell 220 and the groove wall of the mounting groove. When the cell 220 fails, the gas-liquid mixture ejected by the cell 220 can flow into the gap.

[0065] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0066] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A connector, applied to a portable energy storage device, characterized in that: include: A main body, used for connecting with an external connector; A high-voltage connection assembly, comprising a high-voltage plug-in terminal and a high-voltage butt metal bar, wherein the high-voltage plug-in terminal and the high-voltage butt metal bar are both arranged on the main body, and the high-voltage plug-in terminal is electrically connected to the high-voltage butt metal bar; The low-voltage connection component includes a low-voltage plug-in terminal and a low-voltage wiring port, wherein the low-voltage plug-in terminal and the low-voltage wiring port are both arranged on the main body, the low-voltage plug-in terminal is electrically connected to the low-voltage wiring port, and the high-voltage plug-in terminal and the low-voltage plug-in terminal are arranged at intervals and have the same plug-in direction.

2. The connector according to claim 1, characterized in that: The main body includes a circuit board and a mounting seat arranged on the circuit board, the high-voltage docking metal bar is installed on the circuit board, the high-voltage plug-in terminal and the low-voltage plug-in terminal are both arranged on the mounting seat, one end of the high-voltage plug-in terminal abuts against the high-voltage docking metal bar and is arranged perpendicular to the high-voltage docking metal bar, the low-voltage cable port is arranged on the circuit board, and is electrically connected to the low-voltage plug-in terminal through the circuit board.

3. The connector according to claim 1, characterized in that: The outer contour of the main body forms a limiting structure; and / or The main body is provided with a limiting structure, the limiting structure is used to limit the alignment direction of the connector when plugging with an external connector; and / or The main body is provided with a clamping groove for clamping with an external connector.

4. The connector according to claim 1, characterized in that: The high-voltage plug-in terminal includes a positive plug-in terminal and a negative plug-in terminal that are spaced apart from each other, the high-voltage docking metal bar includes a positive metal bar and a negative metal bar that are spaced apart from each other, the positive plug-in terminal is electrically connected to the positive metal bar, the negative plug-in terminal is electrically connected to the negative metal bar, the low-voltage plug-in terminal is arranged between the positive plug-in terminal and the negative plug-in terminal, and the low-voltage wiring port is arranged between the positive metal bar and the negative metal bar.

5. The connector according to claim 4, characterized in that: The positive plug-in terminal includes a plurality of positive sub-terminals, each of which is electrically connected to the positive metal bus, and the negative plug-in terminal includes a plurality of negative sub-terminals, each of which is electrically connected to the negative metal bus, and any two of the positive sub-terminals are spaced apart, and any two of the negative sub-terminals are spaced apart.

6. A portable energy storage device, characterized in that: include: Battery cell components; An electric control board is spaced apart from the battery core assembly, and the electric control board is electrically connected to the battery core assembly; A heat insulating member is disposed between the battery cell assembly and the electric control board; and According to the connector according to any one of claims 1 to 3, the high-voltage docking metal bus and the low-voltage cable port are both electrically connected to the electrical control board.

7. The portable energy storage device according to claim 6, characterized in that: Also includes: A high-voltage connecting metal bar, one end of which is connected to the electric control board, and the other end of which is connected to the high-voltage butt-jointing metal bar; A low-voltage cable, one end of which is connected to the electric control board, and the other end of which is connected to the low-voltage cable port.

8. The portable energy storage device according to claim 6, characterized in that: Also includes: A heat sink is pressed against a surface of the electric control board facing away from the heat insulating member; A limiting member is arranged between the electric control board and the heat sink to fix the heat sink.

9. The portable energy storage device according to claim 6, characterized in that: The battery core assembly comprises: Battery cell support; A battery cell is arranged on the battery cell bracket, the battery cell is electrically connected to the electric control board, one end of the battery cell is provided with an explosion-proof hole, the battery cell bracket is provided with a shielding part corresponding to the explosion-proof hole, and the shielding part shields part of the explosion-proof hole.

10. The portable energy storage device according to claim 9, characterized in that: The flow cross-sectional area of ​​the explosion-proof hole blocked by the blocking portion is less than or equal to half of the flow cross-sectional area of ​​the explosion-proof hole.

Images