Busbar device and energy storage device

Abstract

A busbar device (100) and an energy storage device (1000). The busbar device (100) comprises: a busbar (1), which is provided with a first penetrating portion (11) running through the busbar (1) in a first direction; a pressing member (2), which is movably arranged on the busbar (1) in the first direction and is located on one side of the busbar (1) in the first direction, a clamping gap (21) being formed between the pressing member (2) and the busbar (1) in the first direction, and the pressing member (2) being provided with a first threaded hole (22) opposite the first penetrating portion (11) in the first direction; and a tightening member (3), which comprises a first screw (31) and a first nut (32) connected to the first screw (31). The busbar device can save on space, and can also reduce the operation difficulty of fixing two rows of wire harnesses to the busbar.

Description

Current collector and energy storage device

[0001] The present application claims priority to the Chinese patent application No. 2024108752289, filed on July 2, 2024, entitled Current collector and energy storage device, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of energy storage equipment, in particular to a current collector and an energy storage device. BACKGROUND

[0003] In the related art, in order to save the space occupied by the multiple wire harnesses on the busbar when the multiple wire harnesses are fixed on the busbar, the multiple wire harnesses are generally fixed in double rows on the busbar. Specifically, the busbar is usually provided with a through hole penetrating the busbar along the thickness direction of the busbar, and the double rows of wire harnesses are located on the two sides of the busbar along the thickness direction, respectively. The shank of the screw passes through the through hole from the first side of the busbar to the second side, and then a nut is sleeved on the shank passing through the second side. In this way, by tightening the nut, the double rows of wire harnesses and the busbar are clamped between the nut and the screw nut, thereby achieving the purpose of fixing the double rows of wire harnesses on the busbar.

[0004] However, as can be seen from the above description, since the nut needs to be tightened when fixing the double rows of wire harnesses, it is necessary to reserve space for the entry of a wrench on the second side of the busbar, i.e. the side of the busbar facing away from the screw nut, in order to facilitate the tightening of the nut, thus causing a waste of space. SUMMARY

[0005] The present application discloses a current collector and an energy storage device, which can save space and reduce the difficulty of fixing the double rows of wire harnesses on the current collector.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present application discloses a current collector, comprising:

[0007] a current collector, the current collector being provided with a first penetrating portion penetrating the current collector along a first direction;

[0008] a pressing member movably arranged on the current collector along the first direction and located on one side of the current collector along the first direction, a clamping gap being formed between the pressing member and the current collector along the first direction, the clamping gap being used for clamping a wire nose of a first wire harness, the pressing member being provided with a first threaded hole opposite the first penetrating portion along the first direction; and

[0009] The screwing part comprises a first screw rod and a first nut connected to the first screw rod, the first screw rod is movably arranged in the first through hole in the first direction and is screwed in the first threaded hole, and the first nut is limited on the side of the busbar away from the pressing part, and the first nut and the busbar are used for clamping a second wire harness.

[0010] In a second aspect, the application discloses an energy storage device, comprising:

[0011] A shell is formed with a receiving cavity;

[0012] A battery pack is arranged in the receiving cavity;

[0013] The busbar is insulatedly connected to the mounting portion of the shell, the pressing part is located between the busbar and the mounting portion in the first direction and has a gap between the busbar and the mounting portion;

[0014] A first wire harness; and

[0015] A second wire harness, the second wire harness and the first wire harness are connected to the battery pack, the wire nose of the first wire harness is clamped in the clamping gap, and the wire nose of the second wire harness is clamped between the first nut and the busbar.

[0016] Compared with the prior art, the application has the following beneficial effects:

[0017] The pressing part is movably arranged in the busbar in the first direction and located on the side of the busbar in the first direction, the busbar is provided with a first through hole penetrating the busbar in the first direction, the pressing part is provided with a first threaded hole opposite to the first through hole in the first direction, the first screw rod is movably arranged in the first through hole in the first direction and screwed in the first threaded hole, and the first nut is limited on the side of the busbar away from the pressing part, so that the wire nose of the first wire harness is arranged in the clamping gap and the wire nose of the second wire harness is arranged on the side of the busbar away from the pressing part, only the first nut on the side of the busbar is screwed in the first direction to move the pressing part towards the busbar, so that the first wire harness and the second wire harness are fixed on the busbar in the first direction, compared with the related art, the nut does not need to be installed on the side of the busbar away from the first nut and screwed, on the one hand, the space for the wrench to enter on the side of the busbar away from the first nut can be saved, and the space is saved, on the other hand, the nut does not need to be installed on the side of the busbar away from the first nut, so that the difficulty in operation when the first wire harness and the second wire harness are fixed on the busbar in the first direction is reduced to a certain extent. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of a combiner device according to an embodiment of this application;

[0020] Figure 2 is an exploded view of the junction device in Figure 1;

[0021] Figure 3 is a schematic diagram of the junction device in Figure 1 from the perspective along the Y-axis.

[0022] Figure 4 is a schematic diagram of the clamping component in Figure 3;

[0023] Figure 5 is a structural schematic diagram of the busbar in Figure 2 from another perspective;

[0024] Figure 6 is a schematic diagram of the busbar device in Figure 1 after omitting the first and second wiring harnesses;

[0025] Figure 7 is a schematic diagram of the junction device in Figure 6 from the perspective of the Y-axis direction;

[0026] Figure 8 is a schematic diagram of the structure of an energy storage device provided in an embodiment of this application;

[0027] Figure 9 is a schematic diagram of the structure of an energy storage system according to an embodiment of this application.

[0028] Main reference numerals: 1-Busseter; 11-First through-part; 12-Second through-part; 2-Clamping member; 21-Clamping gap; 22-First threaded hole; 23-Second threaded hole; 24-Fixing part; 241-Moveable gap; 25-Inclined part; 26-Clamping part; 3-Tightening member; 31-First screw; 32-First nut; 4-Connector; 41-Partial structure; 42-Second screw; 5-Guide assembly; 51-First guide; 511-Guide slot; 52-Second guide; 6-Insulating member; 100-Busseter device; 200-Housing; 2001-Accommodating cavity; 2002-Mounting part; 300-Battery pack; 400-First wiring harness; 500-Second wiring harness; 1000 - Energy storage device; 2000 - Energy storage system; 3000 - High voltage cable; 4000 - First power conversion device; 5000 - Second power conversion device. Detailed Implementation

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0030] In addition, in addition to being used to represent the orientation or positional relationship, the above-mentioned partial terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. Those of ordinary skill in the art can understand the specific meanings of these terms in the present application according to specific circumstances.

[0031] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and structures can be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "multiple" is two or more.

[0032] The technical solutions of the present application will be further described below with reference to the embodiments and the drawings.

[0033] FIG. 1 is a structural schematic diagram of a converging device 100 according to an embodiment of the present application, FIG. 2 is an exploded view of the converging device 100 in FIG. 1, and FIG. 3 is a structural schematic diagram of the converging device 100 in FIG. 1 along the Y-axis direction view.

[0034] Referring to FIGS. 1, 2 and 3, the converging device 100 comprises a converging member 1, a pressing member 2 and a screwing member 3, wherein the converging member 1 is provided with a first through portion 11 penetrating through the converging member 1 along a first direction (the X-axis direction in FIG. 2), the pressing member 2 is movably arranged on the converging member 1 along the first direction and located on one side of the converging member 1 along the first direction (the left side of the converging member 1 in FIG. 1), a clamping gap 21 is formed between the pressing member 2 and the converging member 1 along the first direction, the clamping gap 21 is used for clamping a wiring nose of a first wire harness 400, the pressing member 2 is provided with a first threaded hole 22 opposite to the first through portion 11 along the first direction, the screwing member 3 comprises a first screw rod 31 and a first nut 32 connected to the first screw rod 31, the first screw rod 31 movably penetrates through the first through portion 11 along the first direction and is threadedly connected to the first threaded hole 22, the first nut 32 is limited on a side of the converging member 1 away from the pressing member 2 (the right side of the converging member 1 in FIG. 2), and the first nut 32 and the converging member 1 are used for clamping a wiring nose of a second wire harness 500.

[0035] In the embodiment, when the first wire harness 400 and the second wire harness 500 need to be fixed in double rows along the first direction on the busbar 1, since the pressing member 2 is movably arranged on the busbar 1 along the first direction and located on one side of the busbar 1 along the first direction, first, the pressing member 2 can be moved along the first direction away from the busbar 1, so that a clamping gap 21 is formed between the pressing member 2 and the busbar 1 along the first direction. Then, the wire nose of the first wire harness 400 can be arranged in the clamping gap 21, and the wire nose of the second wire harness 500 can be arranged on the side of the busbar 1 away from the pressing member 2, so that the wire nose of the first wire harness 400 and the wire nose of the second wire harness 500 are respectively located on both sides of the busbar 1 along the first direction.

[0036] Then, since the busbar 1 is provided with the first through portion 11 penetrating the busbar 1 along the first direction, and the pressing member 2 is provided with the first threaded hole 22 opposite to the first through portion 11 along the first direction, the first screw rod 31 can be movably threaded in the first through portion 11 along the first direction and screwed in the first threaded hole 22, and the first screw nut 32 is limited on the side of the busbar 1 away from the pressing member 2. When the first screw nut 32 is screwed, the pressing member 2 can be moved along the first direction towards the busbar 1, so that the wire nose of the first wire harness 400 can be clamped in the clamping gap 21 between the busbar 1 and the pressing member 2, and the wire nose of the second wire harness 500 can be clamped between the first screw nut 32 and the busbar 1, thereby achieving the purpose of fixing the first wire harness 400 and the second wire harness 500 in double rows along the first direction on the busbar 1.

[0037] Wherein, since the compression member 2 is movably arranged on the bus member 1 along the first direction and located on one side of the bus member 1 along the first direction, the bus member 1 is provided with a first through portion 11 penetrating the bus member 1 along the first direction, the compression member 2 is provided with a first threaded hole 22 opposite to the first through portion 11 along the first direction, a first screw 31 is movably arranged in the first through portion 11 along the first direction and is screwed to the first threaded hole 22, and a first nut 32 is limited on the side of the bus member 1 away from the compression member 2 (the right side of the bus member 1 in FIG. 2), therefore, on the premise that the wiring nose of the first wire harness 400 is arranged in the clamping gap 21 and the wiring nose of the second wire harness 500 is arranged on the side of the bus member 1 away from the compression member 2, only by screwing the first nut 32 on the side of the bus member 1 where the first nut 32 is located (the right side of the bus member 1 in FIG. 2), the compression member 2 can be moved along the first direction towards the bus member 1, and the first wire harness 400 and the second wire harness 500 can be fixed on the bus member 1 along the first direction, compared with the related art, the nut does not need to be installed on the side of the bus member 1 away from the first nut 32 (the left side of the bus member 1 in FIG. 2) and screwed, therefore, on the one hand, the space for the wrench to enter on the side of the bus member 1 away from the first nut 32 can be saved, and the space can be saved, on the other hand, since the nut does not need to be installed on the side of the bus member 1 away from the first nut 32, the difficulty in operation when the first wire harness 400 and the second wire harness 500 are fixed on the bus member 1 along the first direction can be reduced to a certain extent.

[0038] It should be noted that the bus member 1 and the compression member 2 can be in a plate structure as shown in FIG. 1, of course, the bus member 1 and the compression member 2 can also be in other shapes, which are not limited in the present embodiment.

[0039] The first through portion 11 can be a through hole penetrating the bus member 1 along the first direction, of course, the first through portion 11 can also be a U-shaped notch penetrating the bus member 1 along the first direction, which is not limited in the present embodiment.

[0040] In addition, the screwing member 3 can be a screw in the ordinary sense, of course, the screwing member 3 can also be other structures similar to the screw structure and similar in function, which are not limited in the present embodiment.

[0041] When the screwing member 3 is a screw, the screwing member 3 can include but is not limited to a straight screw, a cross slot screw or an internal hexagonal screw, which are not limited in the present embodiment.

[0042] In order to enable the current-converging device 100 to converge more first wire harnesses 400 and second wire harnesses 500, in some embodiments, referring to FIG. 1 and FIG. 2, the number of the first penetrating portions 11 is multiple, and the multiple first penetrating portions 11 are arranged at intervals along the second direction (Y-axis direction in FIG. 2) on the current-converging member 1.

[0043] When the number of the first penetrating portions 11 is multiple and the multiple first penetrating portions 11 are arranged at intervals along the second direction on the current-converging member 1, since the first threaded holes 22 are oppositely arranged with the first penetrating portions 11 along the first direction, the first threaded holes 22 are also multiple and arranged at intervals along the second direction on the pressing member 2, and the number of the first threaded holes 22 is also multiple and arranged at intervals along the second direction on the pressing member 2. In this way, when the first wire harness 400 and the second wire harness 500 are arranged on both sides of the current-converging member 1 along the first direction corresponding to each first penetrating portion 11, it is obvious that by screwing the corresponding first nut 32, the corresponding first wire harness 400 and the corresponding second wire harness 500 can be fixed in double rows along the first direction on the current-converging member 1, and by screwing multiple first nuts 32, multiple first wire harnesses 400 and multiple second wire harnesses 500 can be fixed in double rows along the first direction on the current-converging member 1, thereby enabling the current-converging device 100 to converge more first wire harnesses 400 and second wire harnesses 500.

[0044] It should be noted that the number of the first penetrating portions 11 can be six as shown in FIG. 2, of course, it can also be seven, eight or nine, etc., which is not limited in the present embodiment.

[0045] It should be noted that the implementation of the pressing member 2 movably arranged along the first direction on the current-converging member 1 has multiple ways, in one possible implementation, referring to FIG. 2 and FIG. 3, the current-converging device 100 further comprises a connecting member 4, the current-converging member 1 is provided with a second penetrating portion 12 penetrating the current-converging member 1 along the first direction (X-axis direction in FIG. 2), the connecting member 4 movably penetrates the second penetrating portion 12 along the first direction and is connected with the pressing member 2, and part of the structure 41 of the connecting member 4 is limited to the side of the current-converging member 1 away from the pressing member 2 (the right side of the current-converging member 1 in FIG. 3), wherein the distance between the part of the structure 41 and the pressing member 2 along the first direction is J, the thickness of the current-converging member 1 along the first direction is T, and J>T.

[0046] Since the connecting piece 4 is movably arranged in the second through portion 12 along the first direction and connected with the compression piece 2, the partial structure 41 of the connecting piece 4 is limited on the side of the current collecting piece 1 away from the compression piece 2, and J>T, when the first nut 32 is screwed to make the compression piece 2 receive an external force along the first direction away from the current collecting piece 1, the compression piece 2 can drive the partial structure 41 to move along the first direction to the current collecting piece 1 until the partial structure 41 abuts against the current collecting piece 1, when the first nut 32 is screwed to make the compression piece 2 receive an external force along the first direction to the current collecting piece 1, the compression piece 2 can drive the partial structure 41 to move along the first direction away from the current collecting piece 1 until the compression piece 2 abuts against the current collecting piece 1, and during the movement of the compression piece 2 along the first direction to or away from the current collecting piece 1, the above-mentioned purpose of movably arranging the compression piece 2 along the first direction on the current collecting piece 1 can be achieved.

[0047] It can be seen that, when the connecting piece 4 is movably arranged in the second through portion 12 along the first direction and connected with the compression piece 2, the partial structure 41 of the connecting piece 4 is limited on the side of the current collecting piece 1 away from the compression piece 2, by screwing the first nut 32, under the guidance of the mutual cooperation of the connecting piece 4 and the second through portion 12, the purpose of movably arranging the compression piece 2 along the first direction on the current collecting piece 1 can be achieved, without the need to design a complex structure, and the implementation is very simple, thus the cost of the current collecting device 100 can be reduced to a certain extent.

[0048] Of course, the compression piece 2 can also achieve the purpose of being movably arranged along the first direction on the current collecting piece 1 by other ways, which are not limited in the embodiment.

[0049] It should be noted that the number of the connecting piece 4 can be three as shown in FIG. 2, of course, it can also be four or five, etc., which are not limited in the embodiment. Correspondingly, the number of the second through portion 12 can also be three, four or five, etc., which are not limited in the embodiment.

[0050] It should be further noted that the arrangement of the second through portion 12 on the current collecting piece 1 is only one possible arrangement in the embodiment, of course, the second through portion 12 can also be arranged on the compression piece 2, which are not limited in the embodiment. When the second through portion 12 is arranged on the compression piece 2, the connecting piece 4 can be connected with the current collecting piece 1, and the partial structure 41 of the connecting piece 4 can be limited on the side of the compression piece 2 away from the current collecting piece 1.

[0051] The structure of the second through portion 12 can be the same as or similar to that of the first through portion 11, and the description of the first through portion 11 in the above-mentioned embodiments can be referred to, which will not be repeated here.

[0052] In some embodiments, referring to Figs. 2 and 3, the connecting member 4 comprises a second screw rod 42 and a second screw nut connected to the second screw rod 42, the second screw nut being the above-mentioned partial structure 41, the second threaded hole 23 is arranged on the compression member 2 at a position opposite to the second through portion 12 along the first direction, the second screw rod 42 is threadedly connected to the second threaded hole 23, and the second screw nut is limited to the side of the busbar 1 away from the compression member 2.

[0053] When the connecting member 4 comprises the second screw rod 42 and the second screw nut connected to the second screw rod 42, the structure of the connecting member 4 can be simplified as much as possible on the basis of ensuring that the second screw rod 42 can be guided in cooperation with the second through portion 12 to achieve the purpose of movably arranging the compression member 2 on the busbar 1 along the first direction when the first screw nut 32 is screwed.

[0054] Of course, the connecting member 4 can also have other possible structures, which are not limited in the present embodiment. When the connecting member 4 comprises the second screw rod 42 and the second screw nut connected to the second screw rod 42, the structure of the connecting member 4 can be similar to the structure of the above-mentioned screwing member, which is not limited in the present embodiment.

[0055] In some embodiments, referring to Figs. 2 and 3, the length of the second screw rod 42 is L, L=T+c, and 0.5mm

[0056] The inventor has found through long-term research that when L=T+c and 0.5mm

[0057] Moreover, by making 0.5mm

[0058] Specifically, c can be 0.51mm, 1mm or 2.9mm, etc., as long as 0.5mm

[0059] In some embodiments, referring to FIG. 2 and FIG. 3, the second threaded hole 23 is a blind hole. When the second threaded hole 23 is a blind hole, on the one hand, the second threaded hole 23 can avoid the second threaded hole 23 from being screwed out of the compression member 2, so that the surface of the compression member 2 is more flat. On the other hand, in the process of screwing the second threaded rod 42 into the second threaded hole 23, since the second threaded rod 42 cannot be screwed further when the second threaded rod 42 abuts against the bottom of the second threaded hole 23 and the second threaded rod 42 is installed in place at this time, whether the second threaded rod 42 is installed in place can be determined by whether the second threaded rod 42 can be screwed, so that whether the second threaded rod 42 is installed in place becomes perceptible.

[0060] In some embodiments, referring to FIG. 2, FIG. 3 and FIG. 4, the compression member 2 includes a fixed portion 24, an inclined portion 25 and a compression portion 26, wherein the busbar 1 is provided with a second through portion 12 penetrating the busbar 1 in the first direction, the connecting member 4 is movably arranged in the second through portion 12 in the first direction and connected with the fixed portion 24, an active gap 241 is formed between the fixed portion 24 and the busbar 1 in the first direction, the first end of the inclined portion 25 is connected with the fixed portion 24 and the second end of the inclined portion 25 is inclined away from the busbar 1 (left in FIG. 3), and the compression portion 26 is connected with the second end of the inclined portion 25, and a clamping gap 21 is formed between the compression portion 26 and the busbar 1, and the width of the clamping gap 21 in the first direction is greater than the width of the active gap 241 in the first direction.

[0061] Since the connecting member 4 is movably arranged in the second through portion 12 in the first direction and connected with the fixed portion 24, the fixed portion 24 can move in the first direction towards the busbar 1 or away from the busbar 1, and the compression portion 26 can move in the first direction towards the busbar 1 or away from the busbar 1. When the compression portion 26 moves in the first direction towards the busbar 1 too much, the clamping gap 21 will disappear, and it will be more difficult to insert the wire nose of the first wire harness 400 into the clamping gap 21.

[0062] In the embodiment, the width of the clamping gap 21 in the first direction is greater than the width of the active gap 241 in the first direction, so that when the fixed portion 24 moves in the first direction towards the busbar 1, the fixed portion 24 will abut against the busbar 1 before the compression portion 26 abuts against the busbar 1. In this way, when the fixed portion 24 abuts against the busbar 1, the compression portion 26 cannot continue to move in the first direction towards the busbar 1, so that the compression portion 26 cannot abut against the busbar 1, and the clamping gap 21 cannot disappear, so that it is not difficult to insert the wire nose of the first wire harness 400 into the clamping gap 21.

[0063] It should be noted that the second through portion 12 is arranged on the busbar 1, and the connecting piece 4 is movably arranged in the second through portion 12 along the first direction and connected with the fixed portion 24, which is only one possible implementation manner given in the embodiment, and in another possible implementation manner, the second through portion 12 is also arranged on the fixed portion 24, and the connecting piece 4 can also be movably arranged in the second through portion 12 along the first direction and connected with the busbar 1, and the embodiment does not limit this.

[0064] Considering whether the wiring nose of the first wire harness 400 can be easily and conveniently inserted into the clamping gap 21 directly affects the use experience of the busbar device 100, in order to improve the use experience of the busbar device 100, in some embodiments, referring to FIG. 2 and FIG. 5, FIG. 5 is a structural schematic view of the busbar 1 in FIG. 2 from another perspective, the busbar device 100 further comprises a guide assembly 5, the guide assembly 5 is located in the clamping gap 21, and the guide assembly 5 is used for guiding the wiring nose of the first wire harness 400 to be inserted into the clamping gap 21.

[0065] Since the guide assembly 5 is located in the clamping gap 21, by arranging the guide assembly 5, under the guiding action of the guide assembly 5, the wiring nose of the first wire harness 400 can be very easily and conveniently inserted into the clamping gap 21, thereby the use experience of the busbar device 100 can be improved.

[0066] Among them, the implementation manner of the above-mentioned guide assembly 5 has multiple, in one possible implementation manner, referring to FIG. 2 and FIG. 5, the guide assembly 5 comprises: a first guide piece 51 and a second guide piece 52, wherein the second guide piece 52 and the first guide piece 51 are both arranged in the clamping gap 21 and located on both sides of the first through portion 11 along the second direction (Y-axis direction in FIG. 2) to form a guide gap 511, and the guide gap 511 is used for guiding the wiring nose of the first wire harness 400 to be inserted into the clamping gap 21 through the guide gap 511.

[0067] Since the second guide piece 52 and the first guide piece 51 are both arranged in the clamping gap 21 and located on both sides of the first through portion 11 along the second direction, and since the guide gap 511 is formed between the second guide piece 52 and the first guide piece 51, when it is needed to insert the wiring nose of the first wire harness 400 into the clamping gap 21, it is only needed to firstly insert the wiring nose of the first wire harness 400 into the guide gap 511, and then push the wiring nose of the first wire harness 400 along the extension direction of the guide gap 511, so as to achieve the purpose of inserting the wiring nose of the first wire harness 400 into the clamping gap 21, and the implementation manner is very simple.

[0068] The second guide 52 and the first guide 51 can be in a strip structure as shown in FIG. 5, and of course, the second guide 52 and the first guide 51 can also be in other shapes, such as a plate structure, and the like, which are not limited in the embodiment.

[0069] In some embodiments, referring to FIG. 5 and FIG. 6, the first guide 51 and the second guide 52 both extend along the third direction (the Z-axis direction in FIG. 5), the guide gap 511 is used to guide the wire nose of the first wire harness 400 to pass through the guide gap 511 and be inserted into the clamping gap 21 along the third direction, and at least one of the first guide 51 and the second guide 52 protrudes out of the busbar 1 and / or the compression member 2 along the third direction.

[0070] By making at least one of the first guide 51 and the second guide 52 protrude out of the busbar 1 and / or the compression member 2 along the third direction, the opening of the guide gap 511 formed by the first guide 51 and the second guide 52 can protrude out of the busbar 1 and / or the compression member 2 along the third direction, so that the wire nose of the first wire harness 400 can be guided by the guide gap 511 in advance before being inserted into the clamping gap 21, and thus, the wire nose of the first wire harness 400 can be more conveniently and quickly inserted into the clamping gap 21.

[0071] The height of at least one of the first guide 51 and the second guide 52 protruding out of the busbar 1 and / or the compression member 2 along the third direction can be any value within 3mm to 8mm, and the inventors have found that when the height of at least one of the first guide 51 and the second guide 52 protruding out of the busbar 1 and / or the compression member 2 along the third direction is within the range of 3mm to 8mm, the guiding effect of the guide gap 511 formed by the first guide 51 and the second guide 52 is better.

[0072] Specifically, the height of at least one of the first guide 51 and the second guide 52 protruding out of the busbar 1 and / or the compression member 2 along the third direction can be 3mm, 5.5mm, 8mm, or the like, as long as it is within the range of 3mm to 8mm, which is not limited in the embodiment.

[0073] In some embodiments, referring to FIG. 5, the first guide 51 and the second guide 52 are both arranged on the busbar 1.

[0074] When the first guide 51 and the second guide 52 are both arranged on the busbar 1, the first guide 51 and the second guide 52 can be integrated on the busbar 1. In this way, when the busbar device 100 is assembled, the first guide 51 and the second guide 52 can be automatically arranged in the clamping gap 21 by assembling the busbar 1 and the compression member 2, and thus the assembly difficulty of the busbar device 100 can be reduced.

[0075] Of course, the above-mentioned arrangement of the first guide 51 and the second guide 52 on the busbar 1 is only one possible arrangement given in the embodiment, and of course, the first guide 51 and the second guide 52 can also be arranged on the compression member 2, or one of the first guide 51 and the second guide 52 is arranged on the compression member 2 and the other is arranged on the busbar 1, and the like, which is not limited in the embodiment.

[0076] It should be noted that when the first guide 51 and the second guide 52 are both arranged on the busbar 1, the first guide 51 and the second guide 52 can be arranged on the busbar 1 by welding, and of course, other arrangements are also possible, which is not limited in the embodiment.

[0077] In some embodiments, referring to FIG. 3, FIG. 6 and FIG. 7, the thickness of the first guide 51 and the second guide 52 along the first direction is d, and the thickness of the wire nose of the first wire harness 400 along the first direction is k, and k>d.

[0078] When the thickness k of the wire nose of the first wire harness 400 along the first direction is greater than the thickness d of the first guide 51 and the second guide 52 along the first direction, it can be ensured that the wire nose of the first wire harness 400 can be tightly clamped between the compression member 2 and the busbar 1, and the situation that the first guide 51 and the second guide 52 are supported between the compression member 2 and the busbar 1 and the wire nose of the first wire harness 400 cannot be clamped between the compression member 2 and the busbar 1 can be avoided.

[0079] In some embodiments, referring to FIG. 1, the busbar device 100 further comprises an insulation member 6 connected to one side of the busbar 1 (the left side of the busbar 1 in FIG. 1) where the compression member 2 is located, avoiding the compression member 2 and being located outside the clamping gap 21, and the insulation member 6 is used to connect the mounting portion 2002 to be separated from any one of the busbar 1 and the compression member 2.

[0080] Since the insulation piece 6 is connected to the side of the busbar 1 where the compression piece 2 is located, avoids the compression piece 2 and is located outside the clamping gap 21, when the insulation piece 6 is connected to the mounting portion 2002, the mounting portion 2002 can be separated from any one of the busbar 1 and the compression piece 2 by the insulation piece 6, so as to avoid the current on the busbar device 100 from being conducted to the mounting portion 2002, thereby making the busbar device 100 safer.

[0081] Specifically, taking the application of the busbar device 100 in the energy storage device 1000 as an example, the mounting portion 2002 can be understood as a central control cabinet of the energy storage device 1000. Obviously, by arranging the insulation piece 6, the insulation piece 6 can avoid the current on the busbar device 100 from being conducted to the central control cabinet to cause the central control cabinet to be electrified, which may threaten the safety of personnel when the central control cabinet is electrified. Therefore, by arranging the insulation piece 6, the busbar device 100 can be safer.

[0082] The insulation piece 6 can be an insulator, and the number of the insulation piece 6 can be one, two or three, which is not limited in the embodiment.

[0083] FIG. 8 is a structural schematic view of an energy storage device 1000 according to an embodiment of the present application. Referring to FIGS. 1 and 8, the energy storage device 1000 includes a housing 200, a battery pack 300, a busbar device 100, a first wire harness 400 and a second wire harness 500. The housing 200 is formed with a receiving cavity 2001, the battery pack 300 is arranged in the receiving cavity 2001, the busbar 1 is insulatedly connected to a mounting portion 2002 of the housing 200, the compression piece 2 is located between the busbar 1 and the mounting portion 2002 along a first direction and has a gap with the mounting portion 2002, the second wire harness 500 and the first wire harness 400 are both connected to the battery pack 300, a wiring nose of the first wire harness 400 is clamped in a clamping gap 21, and a wiring nose of the second wire harness 500 is clamped between the first nut 32 and the busbar 1.

[0084] The structure of the busbar device 100 can be the same as that of any one of the busbar devices 100 in the above embodiments and can bring the same or similar beneficial effects. For details, refer to the description of the busbar device 100 in the above embodiments, which will not be repeated here.

[0085] In the embodiment, since the current collecting device 100 does not need to reserve a space for a wrench to enter on the side of the current collecting member 1 away from the first nut 32 (the left side of the current collecting member 1 in FIG. 8) and does not need to install a nut on the side of the current collecting member 1 away from the first nut 32 (the left side of the current collecting member 1 in FIG. 8), the first wire harness 400 and the second wire harness 500 can be fixed to the current collecting member 1 in double rows in the first direction while saving space and reducing the difficulty in operation. Based on this, when the current collecting device 100 is applied to the energy storage device 1000, on the one hand, the structure of the energy storage device 1000 can be more compact, and on the other hand, the difficulty in operation of the energy storage device 1000 when fixing the first wire harness 400 and the second wire harness 500 to the current collecting member 1 in double rows in the first direction is also lower.

[0086] It should be noted that the installation part 2002 can be a central control cabinet of the energy storage device 1000, and the embodiment is not limited in this regard.

[0087] It should be noted that the installation part 2002 can be a central control cabinet of the energy storage device 1000, and the embodiment is not limited in this regard.

[0088] In the embodiment, since the current collecting device 100 does not need to reserve a space for a wrench to enter on the side of the current collecting member 1 away from the first nut 32 (the left side of the current collecting member 1 in FIG. 8) and does not need to install a nut on the side of the current collecting member 1 away from the first nut 32 (the left side of the current collecting member 1 in FIG. 8), the first wire harness 400 and the second wire harness 500 can be fixed to the current collecting member 1 in double rows in the first direction while saving space and reducing the difficulty in operation. Based on this, when the current collecting device 100 is applied to the energy storage device 1000, on the one hand, the structure of the energy storage device 1000 can be more compact, and on the other hand, the difficulty in operation of the energy storage device 1000 when fixing the first wire harness 400 and the second wire harness 500 to the current collecting member 1 in double rows in the first direction is also lower.

[0089] The application also provides an energy storage system 2000, as shown in FIG. 9, which is a structural schematic diagram of the energy storage system 2000 according to an embodiment of the application. The embodiment of FIG. 9 is described by taking the power generation / distribution side shared energy storage scenario as an example, and the energy storage device 1000 of the application is not limited to the power generation / distribution side energy storage scenario.

[0090] The application provides a kind of energy storage system 2000, the energy storage system 2000 includes: high voltage cable 3000, first electric energy conversion device 4000, second electric energy conversion device 5000 and the energy storage device 1000 provided by the application, under the condition of power generation, the first electric energy conversion device 4000 and second electric energy conversion device 5000 are used to convert other forms of energy into electric energy, connect with high voltage cable 3000 and supply distribution network power side use, when electric load is low, the first electric energy conversion device 4000, second electric energy conversion device 5000 generates excess, and the excess electric quantity is stored to energy storage device 1000, reduces the rate of abandoned wind, light, improves new energy power generation consumption problem;When electric load is high, grid issues instructions, the electric quantity stored in energy storage device 1000 is transmitted to power side use with high voltage cable 3000 in grid-connected mode, provides peak shaving, frequency modulation, backup and other services for grid operation, fully plays the role of grid peak shaving, promotes grid peak clipping, and relieves grid power supply pressure.

[0091] Optionally, the first electric energy conversion device 4000 and the second electric energy conversion device 5000 can convert at least one of solar energy, light energy, wind energy, heat energy, tidal energy, biomass energy and mechanical energy into electric energy.

[0092] The number of energy storage devices 1000 can be multiple, multiple energy storage devices 1000 are connected in series or parallel with each other, and multiple energy storage devices 1000 are supported and electrically connected by using isolation plates (not shown in the figure). In the embodiment, "multiple" means two or more. The energy storage device 1000 can also be provided with an energy storage box outside for accommodating the energy storage device 1000.

[0093] Optionally, the energy storage device 1000 can include but is not limited to single battery, battery module, battery pack, battery system and the like. The actual application form of the energy storage device 1000 provided by the embodiment of the application can be but is not limited to the listed products, and can also be other application forms, and the embodiment of the application does not strictly limit the application form of the energy storage device 1000. The embodiment of the application only takes the multi-core battery as an example for description. When the energy storage device 1000 is a single battery, the energy storage device 1000 can be at least one of cylindrical battery, square battery and the like.

[0094] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A busbar assembly comprising: a busbar provided with a first through-hole extending through the busbar in a first direction; a pressing member movably provided on the busbar at a side of the busbar in the first direction, a clamping gap being formed between the pressing member and the busbar in the first direction for clamping a wire nose of a first wire harness, the pressing member being provided with a first threaded hole opposite to the first through-hole in the first direction; and a screwing member comprising a first screw rod and a first nut connected to the first screw rod, the first screw rod movably penetrating the first through-hole in the first direction and being threadedly connected to the first threaded hole, the first nut being located at a side of the busbar away from the pressing member, the first nut and the busbar being used for clamping a wire nose of a second wire harness. The busbar assembly further comprises a connecting member, a second through-hole extending through a first one of the busbar and the pressing member in the first direction, the connecting member movably penetrating the second through-hole in the first direction and being connected to a second one of the busbar and the pressing member, a part structure of the connecting member being located at a side of the first one away from the second one, wherein a distance between the part structure and the second one in the first direction is J, a thickness of the first one in the first direction is T, and J > T.

2. The current collection device of claim 1, wherein, The connecting member comprises a second screw rod and a second nut connected to the second screw rod, the second nut being the part structure, the second one being provided with a second threaded hole at a position opposite to the second through-hole in the first direction, the second screw rod being threadedly connected to the second threaded hole, and the second nut being located at the side of the first one away from the second one.

3. The current collection device of claim 2, wherein, A length of the second screw rod is L, L = T + c, and 0.5 mm < c < 3 mm.

4. The current collection device of claim 3, wherein, The second threaded hole is a blind hole.

5. The current collection device of claim 3, wherein, The second through-hole is provided on the busbar, and the connecting member movably penetrates the second through-hole in the first direction and is connected to the pressing member.

6. The current collection device of claim 2, wherein, The pressing member comprises:

7. The current collection device of claim 2, wherein, a fixed portion, a second through-hole extending through a first one of the busbar and the fixed portion in the first direction, the connecting member movably penetrating the second through-hole in the first direction and being connected to a second one of the busbar and the fixed portion, and an active gap being formed between the fixed portion and the busbar in the first direction; an inclined portion, a first end of the inclined portion being connected to the fixed portion, and a second end of the inclined portion being inclined away from the busbar; and a pressing portion connected to the second end of the inclined portion, the pressing portion and the busbar forming the clamping gap therebetween, a width of the clamping gap in the first direction being greater than a width of the active gap in the first direction. ​ 8. The current collection device of any one of claims 1-7, wherein, The busbar device further comprises a guide assembly located in the clamping gap, the guide assembly being configured to guide the wire harness nose of the first wire harness to be inserted into the clamping gap.

9. The current collection device of claim 8, wherein, The guide assembly comprises: a first guide; and a second guide, the second guide and the first guide are both arranged in the clamping gap and located on both sides of the first through portion along a second direction to form a guide gap, the guide gap being configured to guide the wire harness nose of the first wire harness to be inserted into the clamping gap through the guide gap.

10. The current collection device of claim 9, wherein, The first guide and the second guide both extend along a third direction, the guide gap being configured to guide the wire harness nose of the first wire harness to be inserted into the clamping gap through the guide gap along the third direction, at least one of the first guide and the second guide protruding out of the busbar and / or the compression member along the third direction.

11. The current collection device of claim 9, wherein, The first guide and the second guide are both arranged in the busbar.

12. The current collection device of claim 9, wherein, The thickness of the first guide and the second guide along the first direction is d, the thickness of the wire harness nose of the first wire harness along the first direction is k, and k>d.

13. The flow convergence device of any one of claims 1-7 or 9-12, wherein, The busbar device further comprises: an insulation member connected to one side of the busbar where the compression member is located, avoiding the compression member and located outside the clamping gap, the insulation member being configured to have a gap between the mounting portion and the busbar and between the mounting portion and the compression member when connected to the mounting portion.

14. The flow convergence device of any one of claims 1-7 or 9-12, wherein, The number of the first through portions is multiple, and the multiple first through portions are arranged in the busbar along the second direction.

15. An energy storage device, wherein, Comprise: a housing formed with a receiving cavity; a battery pack arranged in the receiving cavity; The busbar device of any one of claims 1-14, the busbar being insulatedly connected to a mounting portion of the housing, the compression member being located between the busbar and the mounting portion along the first direction and having a gap between the busbar and the mounting portion; a first wire harness; and a second wire harness, the second wire harness and the first wire harness being both connected to the battery pack, the wire harness nose of the first wire harness being clamped in the clamping gap, and the wire harness nose of the second wire harness being clamped between the first nut and the busbar.

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