Batteries and electrical devices

Abstract

The present application relates to the field of battery technology and provides a battery and an electrical device, wherein the battery comprises: a plurality of battery cells, each of which is provided with a pole and an insulating gasket insulated from the pole at both ends, and each insulating gasket is provided with a positioning protrusion, and the pole is sleeved on the outer periphery of the positioning protrusion; an electrical connector, which is provided with a first positioning hole and a second positioning hole, the first positioning hole and the second positioning hole respectively plugging with the positioning protrusion on the insulating gasket on the same side of two adjacent battery cells, and electrically connected to the pole on the same side of the two adjacent battery cells. The technical solution of the present application facilitates electrical connection between the electrical connector and the pole, thereby improving the battery grouping efficiency.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0002] At present, a battery module may include several to more than a dozen battery cells, each of which has a positive electrode column and a negative electrode column. When multiple battery cells are connected in series or parallel to form a group, a bus bar needs to be used to electrically connect the positive electrode column and the negative electrode column of the battery cell respectively.

[0003] However, in the prior art, when electrically connecting the busbar to the pole of the battery cell, the connection process is difficult and the grouping efficiency is low. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a battery and an electrical device that facilitate electrical connection between an electrical connector and a pole, thereby improving the battery grouping efficiency.

[0005] In the first aspect, the present application provides a battery comprising: a plurality of battery cells, each of the battery cells being provided with a pole and an insulating gasket insulated from the pole, and each of the insulating gaskets being provided with a positioning protrusion, and the pole being sleeved on the outer periphery of the positioning protrusion; an electrical connector being provided with a first positioning hole and a second positioning hole, the first positioning hole and the second positioning hole being respectively plugged into and fitted with the positioning protrusions on the insulating gaskets on the same side of two adjacent battery cells, and being electrically connected to the pole on the same side of the two adjacent battery cells.

[0006] In the above implementation process, the battery includes multiple battery cells, and each battery cell is provided with a pole and an insulating gasket insulated from the pole at both ends. The insulating gasket is located at the end of the battery cell to prevent the external power supply from contacting the conductive block in the battery cell, thereby causing a short circuit in the battery cell; each insulating gasket is provided with a positioning protrusion, and the pole is sleeved on the outer periphery of the positioning protrusion and electrically connected to the conductive block in the battery cell; the battery also includes an electrical connector, which is provided with a first positioning hole and a second positioning hole. The first positioning hole and the second positioning hole are respectively plugged into and matched with the positioning protrusions on the insulating gasket on the same side of two adjacent battery cells, so that the two positioning protrusions on the same side of the two adjacent battery cells pass through the first positioning hole and the second positioning hole respectively, so as to achieve the positioning of the electrical connector, provide convenience for the subsequent electrical connection of the electrical connector to the poles on the same side of the two adjacent battery cells, increase the stability of the electrical connector and the poles on the same side of the two adjacent battery cells, and avoid shaking when the electrical connector is electrically connected to the poles.

[0007] Specifically, one end of the battery cell is a positive electrode column, and the other end is a negative electrode column. For the convenience of introduction, this application introduces a plurality of battery cells connected in series as a group.

[0008] The electrical connector is a sheet structure made of aluminum, and the number of electrical connectors is set to multiple. Multiple battery cells are arranged in parallel, and multiple electrical connectors are arranged on one side of the multiple battery cells, and multiple electrical connectors are also arranged on the other side. The electrical connector is provided with a first positioning hole and a second positioning hole. The electrical connector electrically connects the poles on one side of two adjacent battery cells, so that multiple battery cells are connected in series into groups. The electrical connection method can be welding or gluing.

[0009] In one possible implementation, the pole is annular, the positioning protrusion is annular, the first positioning hole and the second positioning hole are both adapted to the positioning protrusion, and the electrical connector portion is arranged in contact with the end face of the pole.

[0010] In the above implementation process, since the pole is an annular structure, the cross section of the positioning protrusion is annular, and the inner diameter of the pole is not less than the outer diameter of the positioning protrusion, so that the pole can be sleeved on the outer periphery of the positioning protrusion. As a preferred embodiment, the inner diameter of the pole is consistent with the outer diameter of the positioning protrusion, so that when the pole is sleeved on the outer periphery of the positioning protrusion, the inner periphery of the pole is fitted with the outer periphery of the positioning protrusion, avoiding a gap between the pole and the positioning protrusion, and dust easily falls into the gap, thereby affecting the battery performance; the first positioning hole and the second positioning hole are both aligned with the positioning protrusion. The adaption allows the staff to electrically connect the electrical connector to the battery cell, and the two positioning protrusions on the same side of the two adjacent battery cells are respectively inserted into the first positioning hole and the second positioning hole, providing preliminary positioning for the electrical connector to prevent the electrical connector from shaking when placed on the end face of the pole. Afterwards, the operator electrically connects the electrical connector to the two poles on the same side of the two adjacent battery cells by welding or gluing, thereby improving the assembly of the battery group. In addition, the electrical connector part is fitted with the end face of the pole to meet the overcurrent requirements of the electrical connector.

[0011] In one possible implementation, a hollow channel is provided inside each of the battery cells; the battery further includes an upper liquid cooling plate and a lower liquid cooling plate, the upper liquid cooling plate is located on one side of the plurality of battery cells, and the lower liquid cooling plate is located on the other side of the plurality of battery cells, and a first liquid cooling channel and a second liquid cooling channel are respectively provided in the upper liquid cooling plate and the lower liquid cooling plate, and the first liquid cooling channel and the second liquid cooling channel are respectively connected to the hollow channel of each of the battery cells.

[0012] In the above implementation, each battery cell is provided with a hollow channel. An upper liquid cooling plate is located on one side of the battery cells, and a lower liquid cooling plate is located on the other side of the battery cells. The upper and lower liquid cooling plates are used to exchange heat between the battery cells. A heat exchange medium, such as coolant or water, flows through the first liquid cooling channel in the upper and second liquid cooling channels in the lower liquid cooling plate. The heat exchange medium can cool or heat the battery cells. The ends of the hollow channel are connected to the first and second liquid cooling channels, respectively. As the heat exchange medium flows from the first liquid cooling channel through the hollow channel into the second liquid cooling channel, or as the heat exchange medium flows from the second liquid cooling channel through the hollow channel into the first liquid cooling channel, the heat exchange medium exchanges heat with the battery cells, improving heat exchange efficiency and further ensuring battery safety.

[0013] Exemplarily, the heat exchange medium flows into the lower liquid cooling plate and flows out through the upper liquid cooling plate. The purpose of this arrangement is to allow the heat exchange medium to fill the lower liquid cooling plate first. When the lower liquid cooling plate is fully filled, the heat exchange medium overcomes its own gravity through the pumping equipment, fully contacts the battery cells through the hollow channel, exchanges heat with the battery cells, and flows into the upper liquid cooling plate and flows out through the first liquid cooling channel, thereby completing the heat exchange cycle, improving the heat exchange effect, and protecting the safety of battery use.

[0014] In one possible implementation, an upper insulating plate is provided between the upper liquid cooling plate and the electrical connector, and a plurality of first through holes are provided on the upper insulating plate, and the plurality of first through holes are pluggably engaged with the positioning protrusions of the insulating gasket on the same side of the plurality of battery cells;

[0015] A lower insulating plate is provided between the lower liquid cooling plate and the electrical connector. A plurality of second through holes are provided on the lower insulating plate. The plurality of second through holes are plugged into and matched with the positioning protrusions of the insulating gasket on the same side of the plurality of battery cells.

[0016] In the above implementation process, an upper insulating plate is provided between the upper liquid cooling plate and the electrical connector, and a plurality of first through holes are provided on the upper insulating plate, and the plurality of first through holes are plugged into and matched with the positioning protrusions on the insulating gaskets on the same side of the plurality of battery cells, so that the upper insulating plate is attached to the surface of the electrical connector, thereby preventing the electrical connector from contacting the external power supply and causing a battery short circuit; similarly, a lower insulating plate is provided between the lower liquid cooling plate and the electrical connector, and at the same time, a plurality of second through holes are provided on the lower insulating plate, and the plurality of second through holes are plugged into and matched with the positioning protrusions on the insulating gaskets of the plurality of battery cells, thereby preventing the lower insulating plate from contacting the electrical connector and causing a battery short circuit.

[0017] In a possible implementation, a plurality of first ribs are provided on a side of the upper insulating plate facing the battery cell, and the first ribs are located between two adjacent electrical connectors;

[0018] A plurality of second ribs are provided on the other side of the lower insulating plate facing the battery cell. The plurality of second ribs are arranged at intervals, and the second ribs are located between two adjacent electrical connectors.

[0019] In the above implementation process, a plurality of first ribs are provided on the side of the upper insulating plate facing the battery cell, and the first ribs are located between two adjacent electrical connectors, and are used to electrically insulate and isolate the two adjacent electrical connectors to prevent the two adjacent electrical connectors from being electrically connected, thereby causing a battery short circuit and a fire; a plurality of second ribs are provided on the other side of the lower insulating plate facing the battery cell, and the plurality of second ribs are arranged at intervals, and the plurality of second ribs are located between two adjacent electrical connectors, also to prevent the two adjacent electrical connectors from being electrically connected, which may easily cause a battery short circuit.

[0020] Of course, the positions of the upper insulating plate and the lower insulating plate can be reversed. At the same time, the arrangement of the multiple first ribs on the upper insulating plate also corresponds to the arrangement of the electrical connectors, and the arrangement of the multiple second ribs on the lower insulating plate also corresponds to the arrangement of the electrical connectors.

[0021] In one possible implementation, a plurality of first limit members are provided at one end of the upper liquid cooling plate facing the lower liquid cooling plate, and a plurality of second limit members are provided at one end of the lower liquid cooling plate facing the upper liquid cooling plate. The positions of the plurality of first limit members correspond one-to-one to the positions of the plurality of second limit members, and the two ends of the battery cell are respectively plugged into and fitted with the first limit members and the second limit members.

[0022] In the above implementation process, multiple first limit members are provided on the upper liquid cooling plate, and multiple second limit members are provided on the lower liquid cooling plate. The first limit members and the second limit members have the same structure, so that the upper liquid cooling plate and the lower liquid cooling plate have the same structure. During production, only one mold is needed. In addition, the positions of the multiple first limit members and the multiple second limit members correspond one to one, and the two ends of the battery cell are respectively plugged into the first limit member and the second limit member. The first limit member and the second limit member limit and fix the battery cell to prevent the battery cell from shaking between the upper liquid cooling plate and the lower liquid cooling plate, thereby improving the stability of the battery cell.

[0023] Specifically, a first chamber is provided in the first limit member, one end of the first chamber is connected to one end of the hollow channel, and the other end is connected to the first liquid cooling channel. A second chamber is provided in the second limit member, one end of the second chamber is connected to the second liquid cooling channel, and the other end is connected to the other end of the hollow channel, so that the heat exchange medium can flow from the first liquid cooling channel through the first chamber, the hollow channel, and the second chamber in sequence to the second liquid cooling channel, or from the second liquid cooling channel through the second chamber, the hollow channel, and the first chamber in sequence to flow into the first liquid cooling channel, and the flow is smoother.

[0024] Exemplarily, multiple first limit members are integrally formed with the upper liquid cooling plate, and multiple second limit members are integrally formed with the lower liquid cooling plate. The positions of the multiple first limit members correspond one-to-one with the multiple second limit members, so that the upper liquid cooling plate and the lower liquid cooling plate share the same mold, eliminating the need for additional model development and saving costs.

[0025] In a possible implementation, the first limiting member is provided with a first annular groove at one end facing the battery cell, and the second limiting member is provided with a second annular groove at the other end facing the battery cell;

[0026] The insulating gaskets at both ends are provided with annular protrusions that are plugged into the first annular groove and the second annular groove. The diameter of the annular protrusion is smaller than the diameter of the positioning protrusion, and the gap between the positioning protrusion and the annular protrusion constitutes a plug-in groove. The outer side walls of the first annular groove and the second annular groove are respectively inserted into the plug-in grooves at both ends.

[0027] In the above implementation process, an annular protrusion is provided on the insulating gaskets at both ends, the interior of the annular protrusion is connected to the hollow channel, the diameter of the annular protrusion is smaller than the positioning protrusion, the first limiting member is provided with a first annular groove toward one end of the battery cell, and the second limiting member is provided with a second annular groove toward the other end of the battery cell. The annular protrusions on the insulating gaskets at both ends of the battery cell are respectively plugged into and matched with the first annular groove and the second annular groove, thereby realizing the connection between the battery cell and the first limiting member and the second limiting member respectively, further realizing the connection between the first limiting member and the second limiting member and the hollow channel respectively. In addition, the positions of the first limiting member and the second limiting member correspond to each other, making it easier for the battery cell to be plugged into the first limiting member and the second limiting member;

[0028] At the same time, a gap is provided between the annular protrusion and the positioning protrusion, and this gap constitutes an insertion groove. The outer peripheral side walls of the first and second limiting members are respectively inserted into the insertion grooves at both ends, and the first and second limiting members are partially located within the annular protrusion, thereby achieving the insertion of the first and second limiting members at both ends of the battery cell. In addition, due to the gap between the annular protrusion and the positioning protrusion, the pole is sleeved on the outer periphery of the positioning protrusion. When the first and second limiting members are respectively inserted into the insertion grooves, the upper and lower liquid cooling plates respectively have gaps with the poles on the corresponding sides of the battery cell, so that the upper and lower liquid cooling plates can be designed as conventional aluminum alloy materials. At the same time, the poles at both ends of the battery cell also meet the insulation requirements with the upper and lower liquid cooling plates. Of course, the upper and lower liquid cooling plates can also be designed as insulating materials.

[0029] For example, the annular protrusion and the insulating gasket are integrally formed. When the annular protrusions at both ends of the battery cell are respectively inserted into the first annular groove and the second annular groove, leakage can be further avoided and the sealing performance can be improved by gluing.

[0030] Specifically, the upper liquid cooling plate is provided with a plurality of first liquid cooling through holes, and the plurality of first liquid cooling through holes are connected to the first liquid cooling channel. The lower liquid cooling plate is also provided with a plurality of second liquid cooling through holes, and each second liquid cooling through hole is connected to the second liquid cooling channel. Since the two ends of the first chamber are respectively connected to the first liquid cooling through hole and one end of the hollow channel, the heat exchange medium can flow from the first liquid cooling channel into the hollow channel; similarly, the two ends of the second chamber are respectively connected to the second liquid cooling through hole and the other end of the hollow channel, so that the heat exchange medium in the hollow channel can flow from the hollow channel into the second liquid cooling channel. Of course, the flow direction of the heat exchange medium can also be from the second liquid cooling channel to the first liquid cooling channel.

[0031] Specifically, the first chamber is a truncated cone structure, and the cross-sectional area from one end of the first chamber connected to the hollow channel to the other end gradually increases, so that the heat exchange medium can flow smoothly from the hollow channel into the first liquid cooling channel, reducing the flow resistance of the heat exchange medium. Similarly, the second chamber is also a truncated cone structure, and the cross-sectional area from one end of the second chamber connected to the hollow channel to the other end gradually increases, so that the heat exchange medium can flow smoothly from the second liquid cooling channel into the hollow channel or from the hollow channel into the second liquid cooling channel. Moreover, when the heat exchange medium flows from the second liquid cooling channel into the hollow channel, the second chamber will play a role of convergence, and the heat exchange medium gradually converges to the hollow channel, increasing the flow rate of the heat exchange medium and improving the heat exchange effect. Similarly, when the heat exchange medium flows from the first liquid cooling channel into the hollow channel, the first chamber will also play a role of convergence, and its role is consistent with that of the second chamber, which will not be repeated here.

[0032] A first annular sealing gasket is provided at one end of the first limiting member facing the battery cell, and a second annular sealing gasket is provided at the other end of the second limiting member facing the battery cell. The first annular sealing gasket and the second annular sealing gasket are respectively adapted to the inner diameter of the hollow channel. When the two ends of the battery cell are respectively plugged into and matched with the first limiting member and the second limiting member, the first annular sealing gasket and the second annular sealing gasket can seal the plug-in position of the battery cell and the first limiting member and the second limiting member, thereby preventing leakage of the heat exchange medium and further improving the safety performance of the battery.

[0033] Exemplarily, the first annular sealing gasket is located at the end of the first limiter, and the second annular sealing gasket is located at the end of the second limiter. When the two ends of the battery cell are respectively plugged into the first limiter and the second limiter, the two end faces of the first annular sealing gasket are respectively fitted with the end of the first limiter and the end of the hollow channel, and the two end faces of the second annular sealing gasket are respectively fitted with the end of the second limiter and the other end of the hollow channel, thereby achieving a sealing effect. In order to make the sealing effect better, the fitting parts are glued to avoid leakage of the heat exchange medium.

[0034] In one possible implementation, sealing gaskets are embedded in both the first annular groove and the second annular groove, and the annular protrusions at both ends of the battery cell are respectively inserted into the first annular groove and the second annular groove and abut against the sealing gaskets.

[0035] In the above implementation process, by arranging sealing gaskets in both the first annular groove and the second annular groove, when the annular protrusions at both ends of the battery cell are respectively inserted into the first annular groove and the second annular groove, they abut against the sealing gaskets. The sealing gaskets improve the sealing effect of the connection positions of the annular protrusions at both ends of the battery cell and the first annular groove and the second annular groove, respectively, to avoid leakage of heat exchange medium from the connection positions at both ends of the battery cell, thereby further improving the safety performance of the battery.

[0036] In one possible implementation, an inner peripheral wall of the hollow channel is provided with an insulating layer.

[0037] In the above implementation process, an insulating layer is provided on the inner wall of the hollow channel in the battery cell. When the heat exchange medium flows in the hollow channel, the insulating layer insulates the battery cell from the heat exchange medium, thereby preventing the heat exchange medium from conducting electricity with the battery cell and improving the safety performance of the battery.

[0038] In a second aspect, the present application provides an electrical device, comprising the battery described in the first aspect, for providing electrical energy to the electrical device.

[0039] In the above implementation process, the battery provides electric energy to the electric device, so that the electric device can operate normally, wherein the electric device can be a car or a ship, etc.

[0040] Exemplarily, the electrical device also includes a pumping device, which provides circulation power for the heat exchange medium. Openings are provided on one side of the upper liquid cooling plate and the lower cold plate, and the other side is a sealing structure. One end of the liquid inlet pipe is connected to the pumping device, and the other end is connected to the opening of the lower liquid cooling plate. One end of the liquid outlet pipe is connected to the opening of the upper liquid cooling plate, and the other end is connected to the pumping device, so that the heat exchange medium flows from the lower liquid cooling plate to the upper liquid cooling plate. The advantage of this arrangement is that the heat exchange medium can fill the lower liquid cooling plate, overcome its own gravity, and then gradually rise from the hollow channel to the upper liquid cooling plate, and then flow from the upper liquid cooling plate into the pumping device, thereby completing a cooling cycle; of course, the heat exchange medium can also flow from the upper liquid cooling plate into the hollow channel, and then flow into the lower liquid cooling plate, thereby completing a cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A schematic diagram of the explosion structure of a battery provided in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0044] Figure 3 for Figure 2 BB-direction cross-sectional structural diagram;

[0045] Figure 4 A schematic diagram of a partial structure of a battery provided in an embodiment of the present application;

[0046] Figure 5 A schematic diagram of the structure of the lower liquid cooling plate provided in an embodiment of the present application;

[0047] Figure 6 A schematic diagram of a partial structure of a battery provided in an embodiment of the present application from one perspective;

[0048] Figure 7 A schematic diagram of a partial structure of a battery provided in an embodiment of the present application from another perspective;

[0049] Figure 8 A schematic diagram of the partial structure of a battery provided in an embodiment of the present application.

[0050] Icons: 1-battery cell; 11-pole; 12-insulating gasket; 121-positioning protrusion; 13-hollow channel; 14-annular protrusion; 2-electrical connector; 21-first positioning hole; 22-second positioning hole; 3-upper liquid cooling plate; 31-first liquid cooling channel; 4-lower liquid cooling plate; 41-second liquid cooling channel; 5-first limiting member; 51-first chamber; 6-second limiting member; 61-second chamber; 62-second annular groove; 7-upper insulating plate; 71-first through hole; 72-first rib; 8-lower insulating plate; 81-second through hole; 82-second rib; 9-sealing gasket; 10-first annular sealing gasket; 15-second annular sealing gasket. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0052] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0053] like Figures 1 to 4 As shown, in the first aspect, an embodiment of the present application provides a battery, comprising: a plurality of battery cells 1, both ends of the battery cells 1 are provided with a pole 11 and an insulating gasket 12 insulated and connected to the pole 11, and each insulating gasket 12 is provided with a positioning protrusion 121, and the pole 11 is sleeved on the outer periphery of the positioning protrusion 121; an electrical connector 2, provided with a first positioning hole 21 and a second positioning hole 22, the first positioning hole 21 and the second positioning hole 22 are respectively plugged into and matched with the positioning protrusion 121 on the insulating gasket 12 on the same side of two adjacent battery cells 1, and are electrically connected to the pole 11 on the same side of the two adjacent battery cells 1.

[0054] In the above implementation process, the battery includes a plurality of battery cells 1, and each of the two ends of each battery cell 1 is provided with a pole 11 and an insulating gasket 12 insulated from the pole 11. The insulating gasket 12 is located at the end of the battery cell 1 to prevent the external power supply from contacting the conductive block in the battery cell 1, thereby causing a short circuit in the battery cell 1; each insulating gasket 12 is provided with a positioning protrusion 121, and the pole 11 is sleeved on the outer periphery of the positioning protrusion 121 and is electrically connected to the conductive block in the battery cell 1; the battery also includes an electrical connector 2, which is provided with a first positioning hole 21 and a second positioning hole 22. The first positioning hole 21 is provided with a second positioning hole 22. The positioning hole 21 and the second positioning hole 22 are respectively plugged into and matched with the positioning protrusions 121 on the insulating gasket 12 on the same side of the two adjacent battery cells 1, so that the two positioning protrusions 121 on the same side of the two adjacent battery cells 1 pass through the first positioning hole 21 and the second positioning hole 22 respectively, so as to achieve the positioning function of the electrical connector 2, provide convenience for the subsequent electrical connection of the electrical connector 2 with the pole 11 on the same side of the two adjacent battery cells 1, increase the stability of the electrical connector 2 and the pole 11 on the same side of the two adjacent battery cells 1, and avoid shaking when the electrical connector 2 is electrically connected to the pole 11.

[0055] Specifically, one end of the battery cell 1 is a positive electrode column, and the other end is a negative electrode column. For the convenience of introduction, this application introduces a plurality of battery cells 1 connected in series as a group.

[0056] The electrical connector 2 is a sheet structure made of aluminum, and the number of electrical connectors 2 is set to multiple, and multiple battery cells 1 are arranged in parallel. Multiple electrical connectors 2 are arranged on one side of the multiple battery cells 1, and multiple electrical connectors 2 are also arranged on the other side. A first positioning hole 21 and a second positioning hole 22 are opened on the electrical connector 2. The electrical connector 2 electrically connects the poles 11 on one side of two adjacent battery cells 1, so that multiple battery cells 1 are connected in series into groups. The electrical connection method can be welding or gluing.

[0057] like Figure 8 As shown, in one possible implementation, the pole 11 is annular, the positioning protrusion 121 is annular, the first positioning hole 21 and the second positioning hole 22 are both adapted to the positioning protrusion 121, and the electrical connector 2 is partially fitted with the end face of the pole 11.

[0058] In the above implementation process, since the pole 11 is annular, the cross section of the positioning protrusion 121 is annular, and the inner diameter of the pole 11 is not less than the outer diameter of the positioning protrusion 121, so that the pole 11 can be sleeved on the outer periphery of the positioning protrusion 121. As a preferred embodiment, the inner diameter of the pole 11 is consistent with the outer diameter of the positioning protrusion 121, so that when the pole 11 is sleeved on the outer periphery of the positioning protrusion 121, the inner periphery of the pole 11 is fitted with the outer periphery of the positioning protrusion 121, avoiding a gap between the pole 11 and the positioning protrusion 121, and dust easily falls into the gap, thereby affecting the battery performance; the first positioning hole 21 and the second positioning hole 2 2 are adapted to the positioning protrusions 121, so that when the staff electrically connects the electrical connector 2 to the battery cell 1, the two positioning protrusions 121 on the same side of the two adjacent battery cells 1 are respectively inserted into the first positioning hole 21 and the second positioning hole 22, providing preliminary positioning for the electrical connector 2 to prevent the electrical connector 2 from shaking when placed on the end surface of the pole 11. Afterwards, the operator electrically connects the electrical connector 2 to the two poles 11 on the same side of the two adjacent battery cells 1 by welding or gluing, thereby improving the assembly of the battery group. In addition, part of the electrical connector 2 is fitted with the end surface of the pole 11 to meet the overcurrent requirements of the electrical connector 2.

[0059] like Figure 2 and 3 As shown, in one possible implementation, a hollow channel 13 is provided inside each battery cell 1; the battery further includes an upper liquid cooling plate 3 and a lower liquid cooling plate 4, the upper liquid cooling plate 3 is located on one side of the multiple battery cells 1, and the lower liquid cooling plate 4 is located on the other side of the multiple battery cells 1, and a first liquid cooling channel 31 and a second liquid cooling channel 41 are respectively provided in the upper liquid cooling plate 3 and the lower liquid cooling plate 4, and the first liquid cooling channel 31 and the second liquid cooling channel 41 are respectively connected to the hollow channel 13 of each battery cell 1.

[0060] In the above implementation, each battery cell 1 is provided with a hollow channel 13. An upper liquid cooling plate 3 is located on one side of the battery cells 1, and a lower liquid cooling plate 4 is located on the other side of the battery cells 1. The upper and lower liquid cooling plates 3 and 4 are used to exchange heat between the battery cells 1. A heat exchange medium, such as a coolant or water, flows through the first liquid cooling channel 31 within the upper liquid cooling plate 3 and the second liquid cooling channel 41 within the lower liquid cooling plate 4. The heat exchange medium can cool or heat the battery cells 1. The ends of the hollow channel 13 are connected to the first and second liquid cooling channels 31, 41, respectively. As the heat exchange medium flows from the first liquid cooling channel 31 through the hollow channel 13 to the second liquid cooling channel 41, or as the heat exchange medium flows from the second liquid cooling channel 41 through the hollow channel 13 to the first liquid cooling channel 31, heat exchange occurs between the heat exchange medium and the battery cells 1, improving heat exchange efficiency and further ensuring battery safety.

[0061] Exemplarily, the heat exchange medium flows into the lower liquid cooling plate 4 and flows out through the upper liquid cooling plate 3. The purpose of this arrangement is to allow the heat exchange medium to fill the lower liquid cooling plate 4 first. When the lower liquid cooling plate 4 is fully filled, the heat exchange medium overcomes its own gravity through the pumping equipment, fully contacts the battery cell 1 through the hollow channel 13, exchanges heat with the battery cell 1, and flows into the upper liquid cooling plate 3, and flows out from the first liquid cooling channel 31, thereby completing the heat exchange cycle, improving the heat exchange effect, and protecting the safety of battery use.

[0062] like Figures 1 to 3 As shown, in one possible implementation, an upper insulating plate 7 is provided between the upper liquid cooling plate 3 and the electrical connector 2. The upper insulating plate 7 is provided with a plurality of first through holes 71. The plurality of first through holes 71 are all plugged into and engaged with the positioning protrusions 121 of the insulating gasket 12 on the same side of the plurality of battery cells 1.

[0063] A lower insulating plate 8 is provided between the lower liquid cooling plate 4 and the electrical connector 2 . The lower insulating plate 8 is provided with a plurality of second through holes 81 . The plurality of second through holes 81 are plugged into and fitted with the positioning protrusions 121 of the insulating gasket 12 on the same side of the plurality of battery cells 1 .

[0064] In the above implementation process, an upper insulating plate 7 is provided between the upper liquid cooling plate 3 and the electrical connector 2, and a plurality of first through holes 71 are provided on the upper insulating plate 7. The plurality of first through holes 71 are all plugged into and matched with the positioning protrusions 121 on the insulating gaskets 12 on the same side of the plurality of battery cells 1, so that the upper insulating plate 7 is attached to the surface of the electrical connector 2, thereby preventing the electrical connector 2 from contacting the external power supply and causing a battery short circuit; similarly, a lower insulating plate 8 is provided between the lower liquid cooling plate 4 and the electrical connector 2, and at the same time, a plurality of second through holes 81 are provided on the lower insulating plate 8, and the plurality of second through holes 81 are all plugged into and matched with the positioning protrusions 121 on the insulating gaskets 12 of the plurality of battery cells 1, thereby preventing the lower insulating plate 8 from contacting the electrical connector 2 and causing a battery short circuit.

[0065] like Figure 6 and 7 As shown, in a possible implementation, a plurality of first ribs 72 are provided on the side of the upper insulating plate 7 facing the battery cell 1 , and the first ribs 72 are located between two adjacent electrical connectors 2 ;

[0066] A plurality of second ribs 82 are provided on the other side of the lower insulating plate 8 facing the battery cell 1 . The plurality of second ribs 82 are arranged at intervals, and the second ribs 82 are located between two adjacent electrical connectors 2 .

[0067] In the above implementation process, a plurality of first ribs 72 are provided on the side of the upper insulating plate 7 facing the battery cell 1. The first rib 72 is located between two adjacent electrical connectors 2 and is used to electrically insulate and isolate the two adjacent electrical connectors 2 to prevent the two adjacent electrical connectors 2 from being electrically connected, thereby causing a battery short circuit and fire. A plurality of second ribs 82 are provided on the other side of the lower insulating plate 8 facing the battery cell 1. The plurality of second ribs 82 are arranged at intervals and are located between two adjacent electrical connectors 2. This is also to prevent the two adjacent electrical connectors 2 from being electrically connected, which may easily cause a battery short circuit.

[0068] Of course, the positions of the upper insulating plate 7 and the lower insulating plate 8 can be reversed. At the same time, the arrangement of the multiple first ribs 72 on the upper insulating plate 7 also corresponds to the arrangement of the electrical connector 2, and the arrangement of the multiple second ribs 82 on the lower insulating plate 8 also corresponds to the arrangement of the electrical connector 2.

[0069] like Figure 1 As shown, in one possible implementation, a plurality of first limiting members 5 are provided at one end of the upper liquid cooling plate 3 facing the lower liquid cooling plate 4, and a plurality of second limiting members 6 are provided at one end of the lower liquid cooling plate 4 facing the upper liquid cooling plate 3. The positions of the plurality of first limiting members 5 correspond one to one to the positions of the plurality of second limiting members 6, and the two ends of the battery cell 1 are respectively plugged into and fitted with the first limiting members 5 and the second limiting members 6.

[0070] In the above implementation process, a plurality of first limiting members 5 are provided on the upper liquid cooling plate 3, and a plurality of second limiting members 6 are provided on the lower liquid cooling plate 4. The first limiting members 5 and the second limiting members 6 have the same structure, so that the upper liquid cooling plate 3 and the lower liquid cooling plate 4 have the same structure. During production, only one mold is needed. In addition, the positions of the plurality of first limiting members 5 and the plurality of second limiting members 6 correspond one to one. The two ends of the battery cell 1 are respectively plugged into the first limiting members 5 and the second limiting members 6. The first limiting members 5 and the second limiting members 6 limit and fix the battery cell 1 to prevent the battery cell 1 from shaking between the upper liquid cooling plate 3 and the lower liquid cooling plate 4, thereby improving the stability of the battery cell 1.

[0071] Specifically, a first chamber 51 is provided in the first limiting member 5, one end of the first chamber 51 is connected to one end of the hollow channel 13, and the other end is connected to the first liquid cooling channel 31. A second chamber 61 is provided in the second limiting member 6, one end of the second chamber 61 is connected to the second liquid cooling channel 41, and the other end is connected to the other end of the hollow channel 13, so that the heat exchange medium can flow from the first liquid cooling channel 31 through the first chamber 51, the hollow channel 13, and the second chamber 61 to the second liquid cooling channel 41, or from the second liquid cooling channel 41 through the second chamber 61, the hollow channel 13, and the first chamber 51 to the first liquid cooling channel 31, and the flow is smoother.

[0072] Exemplarily, multiple first limiting members 5 are integrally formed with the upper liquid cooling plate 3, and multiple second limiting members 6 are integrally formed with the lower liquid cooling plate 4. The positions of the multiple first limiting members 5 and the multiple second limiting members 6 correspond one to one, so that the upper liquid cooling plate 3 and the lower liquid cooling plate 4 share the same mold, eliminating the need for additional model development and saving costs.

[0073] like Figures 1 to 5 As shown, in a possible implementation, the first limiting member 5 is provided with a first annular groove at one end facing the battery cell 1, and the second limiting member 6 is provided with a second annular groove 62 at the other end facing the battery cell 1;

[0074] The insulating gaskets 12 at both ends are provided with an annular protrusion 14 that is plugged into the first annular groove and the second annular groove 62. The diameter of the annular protrusion 14 is smaller than the diameter of the positioning protrusion 121, and the gap between the positioning protrusion 121 and the annular protrusion 14 constitutes a plug-in groove. The outer peripheral side walls of the first annular groove and the second annular groove 62 are respectively inserted into the plug-in grooves at both ends.

[0075] In the above implementation process, an annular protrusion 14 is provided on the insulating gaskets 12 at both ends, and the interior of the annular protrusion 14 is connected to the hollow channel 13. The diameter of the annular protrusion 14 is smaller than the positioning protrusion 121. The first limiting member 5 is provided with a first annular groove toward one end of the battery cell 1, and the second limiting member 6 is provided with a second annular groove 62 toward the other end of the battery cell 1. The annular protrusions 14 on the insulating gaskets 12 at both ends of the battery cell 1 are respectively plugged into the first annular groove and the second annular groove 62, thereby realizing the connection between the battery cell 1 and the first limiting member 5 and the second limiting member 6 respectively, further realizing the connection between the first limiting member 5 and the second limiting member 6 and the hollow channel 13 respectively. In addition, the positions of the first limiting member 5 and the second limiting member 6 correspond to each other, making it easier for the battery cell 1 to be plugged into the first limiting member 5 and the second limiting member 6;

[0076] At the same time, a gap is provided between the annular protrusion 14 and the positioning protrusion 121, forming a plug-in slot. The outer peripheral sidewalls of the first and second limiting members 5 and 6 are respectively inserted into the plug-in slots at both ends, and portions of the first and second limiting members 5 and 6 are located within the annular protrusion 14, thereby enabling the first and second limiting members 5 and 6 to be plugged into the battery cell 1 at both ends. In addition, due to the gap between the annular protrusion 14 and the positioning protrusion 121, the terminal 11 is sleeved around the outer periphery of the positioning protrusion 121. When the first and second limiting members 5 and 6 are respectively plugged into the plug-in slots, the upper and lower liquid cooling plates 3 and 4 have gaps with the terminal 11 on the corresponding side of the battery cell 1. This allows the upper and lower liquid cooling plates 3 and 4 to be designed as conventional aluminum alloy materials. At the same time, the terminal 11 at both ends of the battery cell 1 also meets the insulation requirements of the upper and lower liquid cooling plates 3 and 4. Of course, the upper and lower liquid cooling plates 3 and 4 can also be designed as insulating materials.

[0077] For example, the annular protrusion 14 and the insulating gasket 12 are integrally formed. When the annular protrusions 14 at both ends of the battery cell 1 are respectively inserted into the first annular groove and the second annular groove 62 , leakage can be further avoided and the sealing performance can be improved by gluing.

[0078] Specifically, the upper liquid cooling plate 3 is provided with a plurality of first liquid cooling through holes, and the plurality of first liquid cooling through holes are connected to the first liquid cooling channel 31. The lower liquid cooling plate 4 is also provided with a plurality of second liquid cooling through holes, and each second liquid cooling through hole is connected to the second liquid cooling channel 41. Since the two ends of the first chamber 51 are respectively connected to the first liquid cooling through hole and one end of the hollow channel 13, the heat exchange medium can flow from the first liquid cooling channel 31 into the hollow channel 13; similarly, the two ends of the second chamber 61 are respectively connected to the second liquid cooling through hole and the other end of the hollow channel 13, so that the heat exchange medium in the hollow channel 13 can flow from the hollow channel 13 into the second liquid cooling channel 41. Of course, the flow direction of the heat exchange medium can also be from the second liquid cooling channel 41 to the first liquid cooling channel 31.

[0079] like Figure 3 and 4 As shown, specifically, the first chamber 51 is a truncated cone structure, and the cross-sectional area from one end of the first chamber 51 connected to the hollow channel 13 to the other end gradually increases, so that the heat exchange medium can flow smoothly from the hollow channel 13 into the first liquid cooling channel 31, reducing the flow resistance of the heat exchange medium. Similarly, the second chamber 61 is also a truncated cone structure, and the cross-sectional area from one end of the second chamber 61 connected to the hollow channel 13 to the other end gradually increases, so that the heat exchange medium can flow smoothly from the second liquid cooling channel 41 to The heat exchange medium flows into the hollow channel 13 or flows from the hollow channel 13 to the second liquid cooling channel 41, and when the heat exchange medium flows from the second liquid cooling channel 41 into the hollow channel 13, the second chamber 61 will play a role of convergence, and the heat exchange medium gradually converges to the hollow channel 13, increasing the flow rate of the heat exchange medium and improving the heat exchange effect. Similarly, when the heat exchange medium flows from the first liquid cooling channel 31 into the hollow channel 13, the first chamber 51 will also play a role of convergence, and its role is consistent with that of the second chamber 61, which will not be repeated here.

[0080] like Figure 3As shown, a first annular sealing gasket 10 is provided at one end of the first limiting member 5 facing the battery cell 1, and a second annular sealing gasket 15 is provided at the other end of the second limiting member 6 facing the battery cell 1. The first annular sealing gasket 10 and the second annular sealing gasket 15 are respectively adapted to the inner diameter of the hollow channel 13. When the two ends of the battery cell 1 are respectively plugged into and matched with the first limiting member 5 and the second limiting member 6, the first annular sealing gasket 10 and the second annular sealing gasket 15 can seal the plug-in position of the battery cell 1 and the first limiting member 5 and the second limiting member 6, thereby avoiding leakage of the heat exchange medium and further improving the safety performance of the battery.

[0081] Exemplarily, the first annular sealing gasket 10 is located at the end of the first limiter 5, and the second annular sealing gasket 15 is located at the end of the second limiter 6. When the two ends of the battery cell 1 are respectively plugged into the first limiter 5 and the second limiter 6, the two end faces of the first annular sealing gasket 10 are respectively fitted with the end of the first limiter 5 and the end of the hollow channel 13, and the two end faces of the second annular sealing gasket 15 are respectively fitted with the end of the second limiter 6 and the other end of the hollow channel 13, thereby achieving a sealing effect. In order to make the sealing effect better, the fitting parts are glued to avoid leakage of the heat exchange medium.

[0082] like Figure 1 and 3 As shown, in a possible implementation, a sealing gasket 9 is embedded in both the first annular groove and the second annular groove 62 , and the annular protrusions 14 at both ends of the battery cell 1 are respectively inserted into the first annular groove and the second annular groove 62 and abut against the sealing gasket 9 .

[0083] In the above implementation process, by arranging sealing gaskets 9 in both the first annular groove and the second annular groove 62, when the annular protrusions 14 at both ends of the battery cell 1 are respectively plugged into the first annular groove and the second annular groove 62, they abut against the sealing gasket 9. The sealing gasket 9 improves the sealing effect of the connection positions of the annular protrusions 14 at both ends of the battery cell 1 and the first annular groove and the second annular groove 62, respectively, thereby avoiding leakage of heat exchange medium from the connection positions at both ends of the battery cell, and further improving the safety performance of the battery.

[0084] In one possible implementation, an insulating layer is provided on the inner peripheral wall of the hollow channel 13 .

[0085] In the above implementation process, the inner wall of the hollow channel 13 in the battery cell is provided with an insulating layer. When the heat exchange medium flows in the hollow channel 13, the insulating layer insulates the battery cell from the heat exchange medium, thereby preventing the heat exchange medium from conducting electricity with the battery cell and improving the safety performance of the battery.

[0086] In a second aspect, an embodiment of the present application provides an electrical device, comprising the battery described in the first aspect, for providing electrical energy to the electrical device.

[0087] In the above implementation process, the battery provides electric energy to the electric device, so that the electric device can operate normally, wherein the electric device can be a car or a ship, etc.

[0088] Exemplarily, the electrical device also includes a pumping device, which provides circulation power for the heat exchange medium. An opening is provided on one side of the upper liquid cooling plate 3 and the lower cold plate, and the other side is a sealing structure. One end of the liquid inlet pipe is connected to the pumping device, and the other end is connected to the opening of the lower liquid cooling plate 4. One end of the liquid outlet pipe is connected to the opening of the upper liquid cooling plate 3, and the other end is connected to the pumping device, so that the heat exchange medium flows from the lower liquid cooling plate 4 to the upper liquid cooling plate 3. The advantage of this arrangement is that the heat exchange medium can fill the lower liquid cooling plate 4, overcome its own gravity, and then gradually rise from the hollow channel 13 to the upper liquid cooling plate 3, and then flow from the upper liquid cooling plate 3 into the pumping device, thereby completing a cooling cycle; of course, the heat exchange medium can also flow from the upper liquid cooling plate 3 into the hollow channel 13, and then flow into the lower liquid cooling plate 4, thereby completing a cycle.

[0089] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0090] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0091] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A battery, characterized in that: include: A plurality of battery cells, each of which is provided with a pole and an insulating gasket insulated from the pole at both ends, and each insulating gasket is provided with a positioning protrusion, and the pole is sleeved on the outer periphery of the positioning protrusion; An electrical connector having a first positioning hole and a second positioning hole, wherein the first positioning hole and the second positioning hole are respectively plugged into and matched with the positioning protrusions on the insulating gasket on the same side of two adjacent battery cells, and are electrically connected to the poles on the same side of the two adjacent battery cells; The number of the electrical connectors is set to be multiple, and the multiple battery cells are arranged in parallel. Multiple electrical connectors are arranged on one side of the multiple battery cells, and multiple electrical connectors are also arranged on the other side.

2. The battery according to claim 1, characterized in that The pole is annular, the positioning protrusion is annular, the first positioning hole and the second positioning hole are both adapted to the positioning protrusion, and the electrical connector is partially fitted to the end face of the pole.

3. The battery according to claim 1 or 2, characterized in that Each of the battery cells is provided with a hollow channel therein; The battery also includes an upper liquid cooling plate and a lower liquid cooling plate, the upper liquid cooling plate is located on one side of the plurality of battery cells, and the lower liquid cooling plate is located on the other side of the plurality of battery cells, and a first liquid cooling channel and a second liquid cooling channel are respectively provided in the upper liquid cooling plate and the lower liquid cooling plate, and the first liquid cooling channel and the second liquid cooling channel are respectively connected to the hollow channel of each battery cell.

4. The battery according to claim 3, characterized in that An upper insulating plate is provided between the upper liquid cooling plate and the electrical connector, and a plurality of first through holes are provided on the upper insulating plate, and the plurality of first through holes are plugged and matched with the positioning protrusions of the insulating gasket on the same side of the plurality of battery cells; A lower insulating plate is provided between the lower liquid cooling plate and the electrical connector. A plurality of second through holes are provided on the lower insulating plate. The plurality of second through holes are plugged into and matched with the positioning protrusions of the insulating gasket on the same side of the plurality of battery cells.

5. The battery according to claim 4, characterized in that The upper insulating plate is provided with a plurality of first ribs on a side facing the battery cells, wherein the first ribs are located between two adjacent electrical connectors; A plurality of second ribs are provided on the other side of the lower insulating plate facing the battery cell. The plurality of second ribs are arranged at intervals, and the second ribs are located between two adjacent electrical connectors.

6. The battery according to claim 4, characterized in that A plurality of first limiting members are provided at one end of the upper liquid cooling plate facing the lower liquid cooling plate, and a plurality of second limiting members are provided at one end of the lower liquid cooling plate facing the upper liquid cooling plate. The positions of the plurality of first limiting members correspond one to one with the positions of the plurality of second limiting members, and the two ends of the battery cell are respectively plugged into and fitted with the first limiting members and the second limiting members.

7. The battery according to claim 6, characterized in that The first limiting member is provided with a first annular groove at one end facing the battery cell, and the second limiting member is provided with a second annular groove at the other end facing the battery cell; The insulating gaskets at both ends are provided with annular protrusions that are plugged into the first annular groove and the second annular groove. The diameter of the annular protrusion is smaller than the diameter of the positioning protrusion, and the gap between the positioning protrusion and the annular protrusion constitutes a plug-in groove. The outer side walls of the first annular groove and the second annular groove are respectively inserted into the plug-in grooves at both ends.

8. The battery according to claim 7, characterized in that Sealing gaskets are embedded in the first annular groove and the second annular groove, and the annular protrusions at both ends of the battery cell are respectively inserted into the first annular groove and the second annular groove and abut against the sealing gaskets.

9. The battery according to claim 3, characterized in that An insulating layer is provided on the inner peripheral wall of the hollow channel.

10. An electrical device, characterized in that: A battery according to any one of claims 1 to 9, used for providing electrical energy to an electrical device.

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