Integrated liquid cooling device and battery thereof

Abstract

The utility model relates to an integrated liquid cooling device and a battery thereof, the integrated liquid cooling device is used for cooling a battery module consisting of a plurality of battery cells, pole columns of the battery cells are arranged in an inverted manner, and the integrated liquid cooling device comprises a liquid cooling piece, a battery pack and a battery pack, the insulation heat conduction isolation piece is arranged between the liquid cooling piece and a pole of the battery cell, a first containing groove is formed in the side, facing the pole, of the insulation heat conduction isolation piece, the groove wall of the first containing groove is provided with a limiting piece extending into the groove, and the bus piece is arranged between the insulation heat conduction isolation piece and the pole. The insulating heat-conducting separator disclosed by the utility model can play an insulating role, and can play a role in protecting the battery cell pole, so that the risks of short circuit, arc discharge and the like between the battery cell and the liquid cooling plate caused by collision of the battery module are reduced. And moreover, a better heat transfer effect can be achieved, so that heat generated by the battery module is effectively transferred to the liquid cooling piece, and rapid cooling of the battery module is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field especially is a kind of integrated liquid cooling device and battery. BACKGROUND

[0002] In order to improve space utilization, obtain better mechanical stability and safety, develop a kind of power battery of cell inversion. Cell inversion is to use the cell that traditional positive direction is placed upside down, and the cell pole, the current-carrying piece and the liquid cooling plate are all at the bottom of the box.

[0003] The deficiency of prior art is that when the bottom of battery pack collides or impacts, the risk of contact short circuit, arc drawing between the pole of cell, bar sheet and liquid cooling plate is caused. UTILITY MODEL CONTENT

[0004] Therefore, the utility model wants to overcome the deficiency in the prior art, provides a kind of insulating heat-conducting structure, and the current-carrying bar and FPC are integrated, the structure can be used as heat-conducting medium to meet the heat transfer between pole and liquid cooling plate, and can be used as insulating structure to insulate and protect the current-carrying bar and cell pole.

[0005] To solve the above technical problems, the utility model provides an integrated liquid cooling device for cooling battery module composed of multiple cells, the pole of the cell is invertedly arranged, and the integrated liquid cooling device comprises:

[0006] Liquid cooling piece;

[0007] Insulating heat-conducting spacer, which is connected to the liquid cooling piece along the first direction, the insulating heat-conducting spacer is arranged between the liquid cooling piece and the pole of the cell, the side of the insulating heat-conducting spacer towards the pole is provided with a first receiving groove, and the groove wall of the first receiving groove is provided with a limiting piece extending into the groove;

[0008] Current-carrying piece, which is arranged between the insulating heat-conducting spacer and the pole, the current-carrying piece is received into the first receiving groove when the current-carrying piece is connected with the insulating heat-conducting spacer, and the limiting piece is pressed against the surface of the current-carrying piece along the first direction;

[0009] Wherein, the insulating heat-conducting spacer is provided with a plurality of avoiding holes penetrating through the first receiving groove, and the avoiding holes are used for welding the pole and the current-carrying piece.

[0010] In an embodiment of the utility model, the FPC assembly is arranged on the same side of the insulating heat-conducting spacer along the first direction, and the FPC assembly is electrically connected with the current-carrying piece.

[0011] In an embodiment of the utility model, the insulation heat-conducting spacer is provided with a second containing groove, the second containing groove is located between the two rows of first containing grooves along the second direction, and the FPC assembly is contained in the second containing groove when the FPC assembly is connected with the insulation heat-conducting spacer.

[0012] In an embodiment of the utility model, the FPC assembly comprises a first circuit board, a first support body and a second circuit board arranged in sequence along the first direction, wherein the first circuit board is arranged on one side of the insulation heat-conducting spacer along the first direction and connected with the insulation heat-conducting spacer.

[0013] In an embodiment of the utility model, the first circuit board is bonded with the insulation heat-conducting spacer and the first support body respectively, and the second circuit board is bonded with the first support body.

[0014] In an embodiment of the utility model, the FPC assembly further comprises an electric connection terminal, and the electric connection terminal is used for electrically connecting with the current lead.

[0015] In an embodiment of the utility model, the FPC assembly is provided with a plurality of electric connection terminals on both sides along the second direction, the electric connection terminals on both sides are connected with the current lead one by one respectively, and an avoiding groove for avoiding the electric connection terminal is formed on the side wall of the second containing groove facing the first containing groove.

[0016] In an embodiment of the utility model, one end of the current lead connected with the insulation heat-conducting spacer is provided with an inner recess for containing the electric connection terminal.

[0017] In an embodiment of the utility model, a heat-conducting piece is further arranged between the liquid cooling piece and the insulation heat-conducting spacer.

[0018] The utility model further provides a battery, which comprises:

[0019] The battery module is composed of a plurality of battery cells, the pole of the battery cell is arranged in an inverted manner, and two poles are arranged on the same side of the battery cell.

[0020] The integrated liquid cooling device is arranged on the side where the pole of the battery cell is located, and the pole is connected with the current lead.

[0021] Compared with the prior art, the above technical scheme of the utility model has the following beneficial effects:

[0022] The utility model relates to an integrated liquid cooling device for cooling the battery module composed of multiple electric cores, and the pole of the electric core is inverted, the integrated liquid cooling device includes liquid cooling piece, insulating heat conducting spacer and busbar, wherein the insulating heat conducting spacer is arranged between the liquid cooling piece and the pole of the electric core, on the one hand, the insulating heat conducting spacer can play the role of insulation and can play the protection role to the pole of the electric core, and the risk of short circuit and arc between the electric core and the liquid cooling plate due to the impact of the battery module is reduced.

[0023] On the other hand, the heat generated by the battery module can be effectively transferred to the liquid cooling piece to realize the rapid cooling of the battery module.

[0024] Further, the first receiving groove is arranged on the insulating heat conducting spacer to facilitate the assembly of the busbar in the first receiving groove, so that the overall assembly structure is compact, the better supporting effect is formed, and the installation of the battery module is facilitated.

[0025] Moreover, the insulating heat conducting spacer is provided with a plurality of avoiding holes penetrating through the first receiving groove, which can facilitate the welding of the pole and the busbar, so as to ensure the welding effect, improve the welding precision and welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to make the content of the utility model more easily be clearly understood, the utility model is further explained in detail below according to the specific embodiment of the utility model and combining with the drawings, wherein:

[0027] Figure 1 It is the structure schematic view of the integrated liquid cooling device and the electric core of the preferred embodiment of the utility model.

[0028] Figure 2 It is the partial structure enlarged view of Figure 1 .

[0029] Figure 3 It is the structure schematic view of the integrated liquid cooling device of the preferred embodiment of the utility model.

[0030] Figure 4 It is the cross section structure schematic view of the integrated liquid cooling device of the preferred embodiment of the utility model.

[0031] Figure 5 It is the left side partial enlarged view of Figure 4 structure.

[0032] Figure 6 It is the partial enlarged view of A in Figure 5 .

[0033] Figure 7 It isFigure 4 A partial enlarged view of the right side of the structure.

[0034] Figure 8 A partial structure diagram of the insulating and heat-conducting spacer of the preferred embodiment of the present application.

[0035] Figure 9 Figure 8 A partial enlarged view of B in the middle.

[0036] Figure 10 A connection structure diagram of the bus member and the electrical connection terminal of the preferred embodiment of the present application.

[0037] Figure 11 A partial structure diagram of the bus member of the preferred embodiment of the present application.

[0038] Description of the drawings: 10, battery cell; 101, pole; 102, cover plate; 1, liquid cooling member; 11, liquid cooling plate; 110, heat-conducting member; 12, bottom guard plate; 13, buffer support member; 2, insulating and heat-conducting spacer; 20, avoiding hole; 201, limiting member; 21, first receiving groove; 22, second receiving groove; 3, bus member; 31, inner groove; 4, FPC assembly; 40, electrical connection terminal; 41, first circuit board; 42, first support body; 43, second circuit board. DETAILED DESCRIPTION

[0039] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it, but the embodiments are not intended to limit the present application.

[0040] Embodiment one

[0041] Referring to Figure 1 The present application discloses an integrated liquid cooling device for cooling a battery module composed of a plurality of battery cells 10, wherein the pole 101 of the battery cell 10 is arranged upside down. The integrated liquid cooling device comprises a liquid cooling member 1 for cooling and cooling the battery module.

[0042] In combination with Figure 2 and Figure 3 The integrated liquid cooling device further comprises an insulating and heat-conducting spacer 2 connected to the liquid cooling member 1 along a first direction Z.

[0043] It should be noted that the first direction Z is in the same direction as the height direction of the battery cell 10.

[0044] According to Figure 7 ​As shown, the insulation heat-conduction spacer 2 is arranged between the liquid cooling member 1 and the pole 101 of the battery cell 10, and a first receiving groove 21 is arranged on the side of the insulation heat-conduction spacer 2 facing the pole 101, and the groove wall of the first receiving groove 21 is provided with a limiting member 201 extending into the groove.

[0045] In combination Figure 8 and Figure 9 As shown, the integrated liquid cooling device further comprises a bus member 3 arranged between the insulation heat-conduction spacer 2 and the pole 101, and the bus member 3 is received into the first receiving groove 21 when connected with the insulation heat-conduction spacer 2, and the limiting member 201 is in pressure contact with the surface of the bus member 3 along the first direction Z.

[0046] Among them, the insulation heat-conduction spacer 2 is provided with a plurality of avoiding holes 20 penetrating through the first receiving groove 21, and the avoiding holes 20 are used for welding the pole 101 and the bus member 3.

[0047] Therefore, it can be known that the integrated liquid cooling device to be protected by the utility model is used for cooling the battery module composed of a plurality of battery cells, and the pole of the battery cell is inverted, and the integrated liquid cooling device comprises a liquid cooling member, an insulation heat-conduction spacer and a bus member, wherein the insulation heat-conduction spacer is arranged between the liquid cooling member and the pole of the battery cell, from one aspect, the insulation heat-conduction spacer can play an insulation role, avoid short circuit and arc problems between the liquid cooling member and the pole, and can play a protection role for the pole of the battery cell, and reduce the risk of short circuit and arc between the battery cell and the liquid cooling plate due to impact of the battery module. On the other hand, it can play a better heat transfer role, so that the heat generated by the battery module is effectively transferred to the liquid cooling member, so that the battery module is rapidly cooled. Further, the insulation heat-conduction spacer is further provided with a first receiving groove, so that the bus member can be received in the first receiving groove during assembly, so that the overall assembly structure is relatively compact, a better supporting role is formed, and the installation of the battery module is facilitated. Moreover, the insulation heat-conduction spacer is provided with a plurality of avoiding holes penetrating through the first receiving groove, and the avoiding holes can facilitate welding of the pole and the bus member, so that the welding effect can also be ensured, and the welding precision and welding quality are improved.

[0048] In combination Figure 4 and Figure 5 As shown, the liquid cooling member 1 comprises a liquid cooling plate 11 and a bottom guard plate 12, the liquid cooling plate 11 and the bottom guard plate 12 are arranged along the first direction, and a buffer support member 13 is arranged between the liquid cooling plate 11 and the bottom guard plate 12. As a preferred embodiment, the buffer support member 13 comprises a supporting foam.

[0049] As a preferred embodiment, referring toFigure 3 As shown, the integrated liquid cooling device further comprises an FPC assembly 4, which is arranged along the first direction Z with the busbar 3, and the FPC assembly 4 and the busbar 3 are arranged on the same side of the insulating heat-conducting separator 2.

[0050] The FPC assembly 4 is electrically connected with the busbar 3.

[0051] In combination Figure 6 And Figure 9 As shown in detail, the insulating heat-conducting separator 2 is provided with a second receiving groove 22, which is located between the two rows of first receiving grooves 21 along the second direction Y. Specifically, the two rows of first receiving grooves 21 have an accommodation gap, and the second receiving groove 22 is located in the region where the accommodation gap is located.

[0052] Therefore, when the FPC assembly 4 is connected with the insulating heat-conducting separator 2, it can be accommodated in the second receiving groove 22. In this way, the FPC assembly 4 can be protected to some extent, avoiding damage to the FPC assembly 4 when the battery module is impacted, and ensuring the stability of the overall structure.

[0053] It should be noted that in this embodiment, in combination Figure 1 As shown, the second direction Y is a horizontal direction.

[0054] Further, referring to Figure 6 As shown, the FPC assembly 4 comprises a first circuit board 41, a first support body 42 and a second circuit board 43 arranged in sequence along the first direction Z; wherein the first circuit board 41 is arranged on one side of the insulating heat-conducting separator 2 along the first direction Z and connected therewith.

[0055] It should be noted that the first direction Z is in the same direction as the arrangement direction of the plurality of battery cells 10 in the battery module. And the first direction Z is perpendicular to the second direction Y.

[0056] Specifically, the first circuit board 41 is bonded with the insulating heat-conducting separator 2 and the first support body 42 respectively; and the second circuit board 43 is bonded with the first support body 42.

[0057] As a preferred embodiment, the first circuit board 41 is a voltage collection board, the first support body 42 is a supporting foam, and the second circuit board 43 is a temperature sensing circuit board.

[0058] Further, the FPC assembly 4 further comprises an electrical connection terminal 40, which is used to realize electrical connection with the busbar 3.

[0059] As a preferred embodiment, referring to Figure 10 As can be seen, the FPC assembly 4 is provided with a plurality of electrical connection terminals 40 on both sides along the second direction Y, and the electrical connection terminals 40 on both sides are connected to the busbar 3 one by one. In this way, the electrical connection terminals 40 and the busbar 3 can be electrically connected without affecting each other in position.

[0060] As can be seen, according to Figure 9 As can be seen, in order to improve the space utilization and facilitate the stable connection of the electrical connection terminals 40 and ensure the stability of the overall connection, the second accommodating groove 22 is provided with a relief groove on the side wall facing the first accommodating groove 21, which is used to avoid the electrical connection terminals 40.

[0061] As a preferred embodiment, in combination with Figure 10 and Figure 11 As can be seen, the busbar 3 is provided with an inner recess 31 for accommodating the electrical connection terminals 40 at one end connected to the insulating and heat-insulating member 2. In this way, the busbar 3 and the electrical connection terminals 40 can be electrically connected, and the electrical connection terminals 40 can be protected from being exposed, so that the electrical connection terminals 40 can form a relatively tight connection with the busbar 3.

[0062] As a preferred embodiment, the liquid cooling member 1 and the insulating and heat-insulating member 2 are further provided with a heat-conducting member 110. Specifically, the heat-conducting member 110 includes but is not limited to heat-conducting glue.

[0063] Example two

[0064] The utility model discloses still disclose a kind of battery, including the battery module consisting of multiple electric core 10, the pole 101 of electric core is upside down setting, the same side of electric core 10 is equipped with two pole 101;

[0065] The battery further includes the integrated liquid cooling device as described in example one, which is disposed towards the side where the pole 101 of the electric core 10 is located, and the pole 101 is connected to the busbar 3.

[0066] Therefore, with the battery using the integrated liquid cooling device, the heat generated by the battery can be quickly dissipated through heat conduction, avoiding short circuit and arc problems between the liquid cooling member and the pole, and protecting the electric core pole. Additionally, the overall assembly structure of the battery module is compact, providing good support and facilitating the installation of the battery module.

[0067] In the description of the embodiments of the present application, it also needs to be explained that, unless explicitly specified and limited, if the terms "set", "connected" appear, they should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless explicitly specified and limited.

[0069] In the present application, unless explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium; can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] Obviously, the above embodiments are only examples for the purpose of clarity, and are not limited to the implementation. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An integrated liquid cooling device for cooling a battery module composed of a plurality of battery cells (10) whose pole posts (101) are arranged upside down, characterized by, The integrated liquid cooling device comprises: A liquid cooling member (1); An insulating and heat-conducting spacer (2) connected to the liquid cooling member (1) along a first direction (Z), the insulating and heat-conducting spacer (2) is arranged between the liquid cooling member (1) and a pole (101) of the battery cell (10), a side of the insulating and heat-conducting spacer (2) facing the pole (101) is provided with a first receiving groove (21), and a groove wall of the first receiving groove (21) is provided with a limiting member (201) extending into the groove; A bus member (3) arranged between the insulating and heat-conducting spacer (2) and the pole (101), the bus member (3) is received into the first receiving groove (21) when the bus member (3) is connected to the insulating and heat-conducting spacer (2), and the limiting member (201) is crimped to a surface of the bus member (3) along the first direction (Z); Wherein, the insulating and heat-conducting spacer (2) is provided with a plurality of avoiding holes (20) penetrating through the first receiving groove (21), and the avoiding holes (20) are used for welding the pole (101) and the bus member (3).

2. The integrated liquid cooling device of claim 1, wherein, Further comprising an FPC assembly (4), the FPC assembly (4) is arranged on the same side of the insulating and heat-conducting spacer (2) as the bus member (3) along the first direction (Z); the FPC assembly (4) is electrically connected to the bus member (3).

3. The integrated liquid cooling device of claim 2, wherein, The insulating and heat-conducting spacer (2) is provided with a second receiving groove (22), the second receiving groove (22) is located between two rows of the first receiving groove (21) along a second direction (Y), and the FPC assembly (4) is received into the second receiving groove (22) when the FPC assembly (4) is connected to the insulating and heat-conducting spacer (2).

4. The integrated liquid cooling device of claim 3, wherein, The FPC assembly (4) comprises a first circuit board (41), a first support body (42) and a second circuit board (43) arranged in sequence along the first direction (Z); wherein the first circuit board (41) is arranged on one side of the insulating and heat-conducting spacer (2) along the first direction (Z) and connected to the insulating and heat-conducting spacer (2).

5. The integrated liquid cooling device of claim 4, wherein, The first circuit board (41) is adhered to the insulating and heat-conducting spacer (2) and the first support body (42) respectively; and the second circuit board (43) is adhered to the first support body (42).

6. The integrated liquid cooling device of claim 5, wherein, The FPC assembly (4) further comprises an electrical connection terminal (40) for electrically connecting to the bus member (3).

7. The integrated liquid cooling device of claim 6, wherein, The FPC assembly (4) is provided with a plurality of electrical connection terminals (40) on both sides along the second direction (Y), and the electrical connection terminals (40) on both sides are connected to the bus member (3) one by one respectively; and an avoiding groove for avoiding the electrical connection terminals (40) is formed on the side wall of the second receiving groove (22) facing the first receiving groove (21).

8. The integrated liquid cooling device of claim 7, wherein, An end of the bus member (3) connected to the insulating and heat-conducting spacer (2) is provided with an inner recess (31) accommodating the electrical connection terminal (40).

9. The integrated liquid cooling device of claim 1, wherein, A heat-conducting member (110) is further arranged between the liquid cooling member (1) and the insulating and heat-conducting spacer (2).

10. A battery, characterized by Comprise: A battery module composed of a plurality of battery cells (10), wherein the pole posts (101) of the battery cells are arranged upside down, and two pole posts (101) are arranged on the same side of the battery cell (10); and the integrated liquid cooling device according to any one of claims 1 to 9, wherein the integrated liquid cooling device is arranged on the side where the pole posts (101) of the battery cells (10) are located, and the pole posts (101) are connected to the busbar (3).

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