Battery pack

Abstract

The embodiment of the utility model provides a battery pack. The battery pack comprises a plurality of liquid cooling plates, a plurality of flexible connecting pipes, a plurality of clamping pieces and a plurality of battery monomers, the plurality of liquid cooling plates are arranged at intervals, the battery monomers are arranged between two adjacent liquid cooling plates, and the liquid cooling plates are provided with water nozzles; the flexible connecting pipes are connected between the two adjacent water nozzles, and the flexible connecting pipes are communicated with the water nozzles so as to communicate the two adjacent liquid cooling plates; the clamping piece is arranged on the flexible connecting pipe in a sleeving mode and fixes the flexible connecting pipe to the water nozzle. Communication between the water nozzles of the two adjacent liquid cooling plates is achieved through the flexible connecting pipes, the flexible connecting pipes are flexible, deformable, not prone to breakage and good in toughness, and the risk that hard pipe fittings are prone to breakage and damage and even disengage from the liquid cooling plates is reduced. The flexible connecting pipe is clamped and fixed to the water nozzle through the clamping piece, so that the flexible connecting pipe has good connection reliability and stability with the water nozzle, and the risk that the flexible connecting pipe is separated from the liquid cooling plate is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of battery equipment, and specifically relates to a battery pack. Background Art

[0002] A battery pack generally includes a battery cell and a liquid cooling plate. The liquid cooling plate is connected to the battery cell to dissipate heat and cool the battery cell.

[0003] In the prior art, there are usually multiple liquid cooling plates, which are arranged at intervals, and two adjacent liquid cooling plates are connected by hard pipes.

[0004] However, due to the tolerance of the liquid cooling plate and the hard pipe fittings, there is a deviation between the connection ends of adjacent liquid cooling plates, which makes the installation between the hard pipe fittings and the connection ends inconvenient and the stability is poor. In addition, during the installation of the liquid cooling plate, the hard pipe fittings are easily subjected to stress, causing them to break and even detach from the liquid cooling plate, resulting in poor installation stability and poor sealing. Utility Model Content

[0005] In view of the above problems, the present utility model is proposed to provide a battery pack that overcomes the above problems or at least partially solves the above problems.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] The embodiment of the present application provides a battery pack, which includes: a plurality of liquid cooling plates, a plurality of flexible connecting tubes, a plurality of clamping members, and a plurality of battery cells;

[0008] A plurality of the liquid cooling plates are arranged at intervals, the battery cell is arranged between two adjacent liquid cooling plates, and the liquid cooling plates are provided with water nozzles;

[0009] The flexible connecting pipe is connected between two adjacent water nozzles, and the flexible connecting pipe is in communication with the water nozzles to connect the two adjacent liquid cooling plates;

[0010] The clamping piece is sleeved on the flexible connecting pipe and fixes the flexible connecting pipe to the water nozzle.

[0011] Optionally, the flexible connecting pipe has a protruding section, the protruding section connects two adjacent water nozzles, and the protruding section can expand or contract.

[0012] Optionally, the flexible connecting pipe has a recessed section and an anti-dropping section connected to the recessed section;

[0013] The anti-slip section is sleeved on a side of the water nozzle close to the liquid cooling plate, and the clamping piece is sleeved on the recessed section and clamps the recessed section on a side of the water nozzle away from the liquid cooling plate.

[0014] Optionally, the protruding section is in the shape of a hollow cylinder, a sphere or an ellipsoid.

[0015] Optionally, the clamping member comprises a sleeve ring, a first clamping end and a second clamping end;

[0016] The sleeve ring is sleeved on the flexible connecting tube and elastically abuts against the flexible connecting tube, the first clamping end is connected to one circumferential end of the sleeve ring, the second clamping end is connected to the other circumferential end of the sleeve ring, and the first clamping end and the second clamping end are elastically connected through the sleeve ring.

[0017] Optionally, the first clamping end is provided with an opening, the second clamping end is passed through the opening and extends away from the first clamping end, and the second clamping end approaches or moves away from the first clamping end through the opening.

[0018] Optionally, the second clamping end is provided with a protruding limiting portion, and the limiting portion abuts against the inner wall of the opening.

[0019] Optionally, the clamping member further includes a fixing member, the first clamping end and the second clamping end are arranged adjacent to each other, and the fixing member is sequentially passed through the first clamping end and the second clamping end to fix the first clamping end and the second clamping end.

[0020] Optionally, the fixing member is a bolt and a nut, the first clamping end is a first clamping plate, and the second clamping end is a second clamping plate;

[0021] The bolt passes through the first clamping plate and the second clamping plate in sequence, and the nut is sleeved on the bolt and abuts against the second clamping plate to connect the first clamping plate to the second clamping plate.

[0022] Optionally, the fixing member is a fixing column, the first clamping end is bent away from the second clamping end to form a first clamping ring, and the second clamping end is bent away from the first clamping end to form a second clamping ring; the first clamping ring and the second clamping ring are arranged at intervals, and the fixing column is sequentially passed through the first clamping ring and the second clamping ring.

[0023] Optionally, a plurality of weight-reducing holes are provided on the clamping member, and the plurality of weight-reducing holes are arranged at intervals along the circumference of the clamping member.

[0024] Optionally, a protrusion is provided on the inner wall of the clamping member, and the protrusion abuts against the flexible connecting tube.

[0025] Optionally, the elastic modulus of the clamping member is greater than the elastic modulus of the flexible connecting tube.

[0026] In the embodiment of the present application, the battery pack includes: a plurality of liquid cooling plates, a plurality of flexible connecting tubes, a plurality of clamping members, and a plurality of battery cells; the plurality of liquid cooling plates are arranged at intervals, the battery cells are arranged between two adjacent liquid cooling plates, and the liquid cooling plates are provided with a water nozzle; the flexible connecting tube is connected between two adjacent water nozzles, the flexible connecting tube is communicated with the water nozzle, so as to connect the two adjacent liquid cooling plates; the clamping member is sleeved on the flexible connecting tube, and the flexible connecting tube is fixed to the water nozzle. In this way, the connection between the water nozzles of the two adjacent liquid cooling plates is realized through the flexible connecting tube. Since the flexible connecting tube is flexible and can be deformed, it is not easy to break, and has good flexibility, which reduces the risk of the hard pipe fittings being easily broken and damaged by stress or even detached from the liquid cooling plate when the existing liquid cooling plate is installed. The flexible connecting tube is clamped and fixed to the water nozzle by the clamping member, so that the flexible connecting tube has good connection reliability and stability to the adjacent water nozzle, so that the flexible connecting tube is more firmly connected to the water nozzle, and the risk of the flexible connecting tube being easily detached from the water nozzle of the liquid cooling plate is reduced. Furthermore, the connection between the flexible connecting pipe and the water nozzle is well sealed by the clamping piece, preventing the cooling medium in the liquid cooling plate from leaking out of the water nozzle. Thus, the problem in the prior art that the connection water nozzles of adjacent liquid cooling plates are deviated due to the tolerance between the liquid cooling plate and the hard pipe fittings, resulting in inconvenient installation and poor stability between the hard pipe fittings and the connection ends is solved. The structural stability and sealing of the battery pack are improved.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 is a partial structural schematic diagram of a battery pack described in an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of the exploded structure of a battery pack described in an embodiment of the present application;

[0031] Figure 3 is a structural schematic diagram of a flexible connecting tube of a battery pack according to an embodiment of the present application;

[0032] Figure 4 is another structural schematic diagram of a flexible connecting tube of a battery pack described in an embodiment of the present application;

[0033] Figure 5 is a structural schematic diagram of a clamping member of a battery pack according to an embodiment of the present application;

[0034] Figure 6 is another structural schematic diagram of a clamping member of a battery pack described in an embodiment of the present application;

[0035] Figure 7 This is another structural schematic diagram of a clamping member of a battery pack described in an embodiment of the present application.

[0036] Figure numerals: 10-liquid cooling plate; 20-flexible connecting pipe; 30-clamping piece; 11-water nozzle; 21-protruding section; 22-recessed section; 23-anti-slip section; 31-sleeving ring; 32-first clamping end; 33-second clamping end; 321-opening; 331-limiting portion; 40-fixing piece; 46-bolt; 47-nut; 41-fixing column; 42-first clamping plate; 43-second clamping plate; 44-first clamping ring; 45-second clamping ring; 311-weight reduction hole; 312-bump; 50-battery cell. DETAILED DESCRIPTION

[0037] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Reference Figures 1 to 7 , showing a schematic structural diagram of a battery pack according to an embodiment of the present application, the battery pack may specifically include: a plurality of liquid cooling plates 10, a plurality of flexible connecting tubes 20, a plurality of clamping members 30 and a plurality of battery cells 50;

[0042] A plurality of liquid cooling plates 10 are arranged at intervals, and the battery cell 50 is arranged between two adjacent liquid cooling plates 10 . The liquid cooling plates 10 are provided with water nozzles 11 .

[0043] The flexible connecting pipe 20 is connected between two adjacent water nozzles 11, and the flexible connecting pipe 20 is in communication with the water nozzles 11 to connect two adjacent liquid cooling plates 10;

[0044] The clamping member 30 is sleeved on the flexible connecting pipe 20 and fixes the flexible connecting pipe 20 to the faucet 11 .

[0045] In the embodiment of the present application, the connection between the water nozzles 11 of two adjacent liquid cooling plates 10 is achieved through the flexible connecting tube 20. Since the flexible connecting tube 20 is flexible and can be deformed, it is not easy to break and has good flexibility, which reduces the risk of the hard pipe fittings being easily broken and damaged by stress or even separated from the liquid cooling plate 10 when the existing liquid cooling plate 10 is installed. The flexible connecting tube 20 is clamped and fixed to the water nozzle 11 by the clamping member 30, so that the flexible connecting tube 20 has good connection reliability and stability to the adjacent water nozzles 11, so that the flexible connecting tube 20 is more firmly connected to the water nozzle 11, reducing the risk of the flexible connecting tube 20 easily separating from the water nozzle 11 of the liquid cooling plate 10. In addition, the connection between the flexible connecting tube 20 and the water nozzle 11 has good sealing performance through the clamping member 30, which prevents the cooling medium in the liquid cooling plate 10 from leaking from the water nozzle 11. Thus, the problem in the prior art that the connection nozzles 11 of adjacent liquid cooling plates 10 are offset due to the tolerance between the liquid cooling plate 10 and the hard pipe fittings, resulting in inconvenient installation and poor stability between the hard pipe fittings and the connection ends, is solved. The structural stability and sealing of the battery pack are improved.

[0046] Specifically, in the embodiment of the present application, the flexible connecting tube 20 and the water nozzle 11 of the liquid cooling plate 10 are clamped by the clamping member 30 after installation, so there is no need for compression installation, which can achieve quick installation, improve installation efficiency, and facilitate automatic installation. Moreover, there is no need to do specific positioning in the axial direction of the flexible connecting tube 20, and the flexible connecting tube 20 can be sleeved and covered on the water nozzle 11, which also greatly improves the installation efficiency. At the same time, the assembly tolerance of the flexible connecting tube 20 and the water nozzle 11 of the liquid cooling plate 10 in the axial and radial directions can also be absorbed to improve the assembly accuracy. In addition, during use, if the battery pack vibrates, is impacted, and the battery cell 50 generates expansion force, the flexible connecting tube 20 can absorb various internal stresses generated by the battery pack due to its flexibility, so that the battery pack has better structural integrity. In addition, in the subsequent repair process, because the flexible connecting tube 20 is flexible, the flexible connecting tube 20 can be replaced without removing the battery cell 50, which greatly increases the production tolerance and improves production efficiency.

[0047] In the embodiment of the present application, specifically, the liquid cooling plate 10 is provided with a liquid cooling channel, and the liquid cooling channel is used to accommodate and transmit the cooling medium. The liquid cooling plate 10 may be provided with two water nozzles 11, one of which may be a liquid inlet nozzle, and the other of which may be a liquid outlet nozzle. The liquid inlet nozzle and the liquid outlet nozzle may be located on both sides of the liquid cooling plate 10, respectively, and the liquid inlet nozzle and the liquid outlet nozzle are respectively connected to the liquid cooling channel, so that the cooling medium is input into the liquid cooling channel through the liquid inlet nozzle, and the cooling medium is output from the liquid cooling channel through the liquid outlet nozzle, so as to realize a relatively smooth circulation of the cooling medium in the liquid cooling channel of the liquid cooling plate 10. In addition, the connection with the external water pipe is realized through the liquid outlet nozzle and the liquid inlet nozzle. For example, the cooling medium may be cooling water or cooling oil, etc., and the embodiment of the present application may not limit the specific type of the cooling medium.

[0048] For example, in the embodiment of the present application, the battery cell 50 has a first wall, which is the wall with the largest surface area of ​​the battery cell 50, and the liquid cooling plate 10 is attached to the first wall. In this way, the liquid cooling plate 10 is attached to the first wall with the largest surface area of ​​the battery cell 50, so that the liquid cooling plate 10 and the battery cell 50 have a larger contact area, thereby having a larger heat exchange area, further improving the heat exchange efficiency, and having a better cooling and heat dissipation effect on the battery cell 50. In addition, the battery cell 50 also has a second wall connected to the first wall, and the second wall is the wall with a smaller surface area of ​​the battery cell 50. The liquid cooling plate 10 can also be attached to the second wall. The embodiment of the present application does not limit the specific setting method of the liquid cooling plate 10.

[0049] In the embodiment of the present application, for example, there are multiple battery cells 50, and the multiple battery cells 50 can be distributed in an array or in a disordered manner. The embodiment of the present application does not limit the specific distribution of the battery cells 50. For example, the battery cells 50 can be lithium-ion cells, polymer lithium cells, or lithium iron phosphate cells, etc., and the embodiment of the present application does not limit the specific type of the battery cells 50.

[0050] For example, in the embodiment of the present application, the material of the flexible connecting tube 20 can be rubber or silicone, etc., so that the flexible connecting tube 20 has good flexibility and toughness, and also has good plasticity for easy processing. For example, the thickness of the side wall of the flexible connecting tube 20 can be any value in 0.5-4mm, such as 0.5mm, 1mm, 2mm, 3mm, 4mm, etc., so that the flexible connecting tube 20 has good structural strength and is not prone to wear and tear. The embodiment of the present application does not limit the specific value of the thickness of the side wall of the flexible connecting tube 20. For example, the embodiment of the present application can set the bursting pressure of the flexible connecting tube 20 to be greater than or equal to 0.5MPa, improve the strength and wear resistance of the flexible connecting tube 20, so that the flexible connecting tube 20 is not easily damaged by external pressure.

[0051] Optionally, in an embodiment of the present application, the flexible connecting tube 20 has a protruding section 21, and the protruding section 21 connects two adjacent water nozzles 11, and the protruding section 21 can expand or contract. In this way, the water nozzles 11 of two adjacent liquid cooling plates 10 are connected through the protruding section 21, so that the cooling medium in multiple liquid cooling plates 10 can circulate. In addition, the protruding section 21 can expand or contract, so that when the cooling medium flow rate is large or the flow rate is too large to generate expansion stress on the flexible connecting tube 20, the protruding section 21 can expand to absorb the stress on the flexible connecting tube 20, thereby avoiding the flexible connecting tube 20 from being easily displaced or damaged. When the cooling medium flow rate is small or the flow rate is too small, the protruding section 21 can shrink and recover the deformation. In addition, the expansion or contraction of the protruding section 21 can also absorb the position tolerance generated by the flexible connecting tube 20 when connecting two adjacent water nozzles 11, thereby improving assembly reliability.

[0052] For example, in the embodiment of the present application, the protruding section 21 can expand or contract along the radial direction of the flexible connecting tube 20, or the protruding section 21 can also expand or contract along the axial direction of the flexible connecting tube 20. In addition, the protruding section 21 can also expand or contract along both the radial and axial directions of the flexible connecting tube 20. The embodiment of the present application may not limit the specific deformation mode of the protruding section 21.

[0053] Optionally, in the embodiment of the present application, the flexible connecting pipe 20 has a recessed section 22 and an anti-slip section 23 connected to the recessed section 22; the anti-slip section 23 is sleeved on the side of the water nozzle 11 close to the liquid cooling plate 10, and the clamping member 30 is sleeved on the recessed section 22 and clamps the recessed section 22 to the side of the water nozzle 11 away from the liquid cooling plate 10. The anti-slip section 23 is sleeved on the side of the water nozzle 11 close to the liquid cooling plate 10, that is, the anti-slip section 23 is sleeved on the root position of the water nozzle 11, so that a relatively tight connection between the flexible connecting pipe 20 and the water nozzle 11 is achieved through the anti-slip section 23, and the flexible connecting pipe 20 is prevented from easily detaching from the water nozzle 11. The recessed section 22 is connected to the anti-slip section 23, and is used to provide a more reliable setting position for the clamping piece 30, so that the clamping piece 30 is more firmly clamped in the recessed section 22, avoiding the clamping piece 30 from slipping on the flexible connecting tube 20, so that the clamping piece 30 can more firmly clamp the flexible connecting tube 20 on the side of the water nozzle 11 away from the liquid cooling plate 10, thereby improving the connection reliability and stability between the flexible connecting tube 20 and the water nozzle 11 of the liquid cooling plate 10.

[0054] Specifically, in the embodiment of the present application, the side of the water nozzle 11 away from the liquid cooling plate 10 refers to the peripheral surface of the side of the water nozzle 11 away from the liquid cooling plate 10 along the axial direction of the water nozzle 11, rather than the end surface of the side of the water nozzle 11 away from the liquid cooling plate 10. The recessed section 22 is clamped to the peripheral surface of the side of the water nozzle 11 away from the liquid cooling plate 10 along the axial direction thereof by the clamping member 30, so that the clamping member 30 has a more reliable and stable connection with the flexible connecting pipe 20 on the peripheral surface of the water nozzle 11, thereby improving the fastening of the clamping member 30.

[0055] For example, in the embodiment of the present application, the anti-slip sections 23 are arranged at both ends of the flexible connecting tube 20. Specifically, the number of the recessed sections 22 can be two, and the two recessed sections 22 are respectively connected to the two sides of the protruding section 21, and the number of the anti-slip sections 23 can also be two, and they are respectively connected to the side of the two recessed sections 22 away from the protruding section 21.

[0056] Optionally, in the embodiment of the present application, the protruding section 21 is in the shape of a hollow cylinder, a sphere or an ellipsoid. In this way, the protruding section 21 has an arc surface, which facilitates the protruding section 21 to easily produce deformation of expansion or contraction, so that the protruding section 21 can better absorb the tolerance formed by the impact of the cooling medium on the flexible connecting tube 20 or the stress generated during the installation process, and reduce the flow resistance generated by the cooling medium, which is beneficial to improve the thermal management effect of the battery pack. For example, the protruding section 21 can be a hollow cylinder, a sphere, or an ellipsoid, which also enriches the setting method of the protruding section 21.

[0057] In the embodiment of the present application, optionally, the clamping member 30 includes a sleeve ring 31, a first clamping end 32 and a second clamping end 33; the sleeve ring 31 is sleeved on the flexible connecting tube 20 and elastically abuts against the flexible connecting tube 20, the first clamping end 32 is connected to one end of the sleeve ring 31 in the circumferential direction, the second clamping end 33 is connected to the other end of the sleeve ring 31 in the circumferential direction, and the first clamping end 32 and the second clamping end 33 are elastically connected through the sleeve ring 31. In this way, the clamping member 30 is sleeved around the flexible connecting tube 20 through the sleeve ring 31, the first clamping end 32 and the second clamping end 33 are respectively connected to the two ends of the sleeve ring 31 in the circumferential direction, and the circumferential size adjustment of the sleeve ring 31 can be achieved through the first clamping end 32 and the second clamping end 33 under the elastic action. Specifically, the first clamping end 32 and the second clamping end 33 can move closer or farther away under the action of elastic force to drive the sleeve ring 31 to contract or expand, thereby adjusting the size of the clamping member 30 to facilitate the installation, clamping and sealing of the clamping member 30 and the flexible connecting tube 20.

[0058] In the embodiment of the present application, the clamping member 30 does not need to be locked by other locking structures. Only through the action of the sleeve ring 31 of the clamping member 30 at the first clamping end 32 and the second clamping end 33, the clamping member 30 has its own deformation ability under the action of elastic force to achieve assembly, clamping and disassembly, which greatly simplifies the assembly process and improves production efficiency.

[0059] For example, in the embodiment of the present application, the first clamping end 32 and the second clamping end 33 are far away from each other, so that the circumferential size (i.e., the inner diameter) of the sleeve ring 31 is increased, that is, the sleeve ring 31 is driven to expand, so that the clamping member 30 can be more conveniently sleeved on the flexible connecting tube 20 during installation. The first clamping end 32 and the second clamping end 33 are close to each other, so that the circumferential size (i.e., the inner diameter) of the sleeve ring 31 is decreased, that is, the sleeve ring 31 is driven to shrink, so that the clamping member 30 is clamped on the flexible connecting tube 20. Specifically, the sleeve ring 31 of the clamping member 30 is contracted and clamped to the recessed section 22 of the flexible connecting tube 20, thereby improving the clamping effect and sealing effect of the clamping member 30 on the flexible connecting tube 20.

[0060] For example, in the embodiment of the present application, the clamping tool can be used to clamp the first clamping end 32 and the second clamping end 33 to open the clamping member 30, and at the same time, the clamping member 30 is inserted into the recessed section 22 of the flexible connecting tube 20. Then, the clamping tool is released, and the clamping member 30 shrinks and rebounds under the action of elastic force. The radial force of the rebound causes the flexible connecting tube 20 to form a deformation zone. The radial force generated in the deformation zone can make the flexible connecting tube 20 have better sealing performance, and then when the flexible connecting tube 20 is subjected to friction along its axial direction, the entire system will not be easily loosened when subjected to vibration and the expansion force of the battery cell 50, so that the battery pack has better reliability during use.

[0061] In the embodiment of the present application, for example, after the clamping member 30 is sleeved on the flexible connecting tube 20, the connection between the first clamping end 32 and the second clamping end 33 can be achieved by setting an adhesive, so that the first clamping end 32 is bonded to the second clamping end 33, thereby improving the connection reliability between the first clamping end 32 and the second clamping end 33. For example, gluing is applied between the first clamping end 32 and the second clamping end 33 to achieve bonding between the two. In addition, structural adhesive can be set to bond between the first clamping end 32 and the second clamping end 33, etc., and the embodiment of the present application is not limited to this.

[0062] Optionally, in the embodiments of the present application, Figure 5 As shown, the first clamping end 32 is provided with an opening 321, the second clamping end 33 is penetrated through the opening 321 and extends away from the first clamping end 32, and the second clamping end 33 approaches or moves away from the first clamping end 32 through the opening 321. Specifically, in the embodiment of the present application, the position where the opening 321 extends is the first clamping end 32. In this way, the spacing between the first clamping end 32 and the second clamping end 33 can be adjusted through the opening 321, and the second clamping end 33 is penetrated through the opening 321 on the first clamping end 32, so that the second clamping end 33 can move under the limiting effect of the opening 321 of the first clamping end 32, so as to avoid the second clamping end 33 and the first clamping end 32 from easily offsetting during the adjustment process to affect the clamping effect. The second clamping end 33 extends away from the first clamping end 32 so that the second clamping end 33 is exposed, which is convenient for operators to clamp the first clamping end 32 and the second clamping end 33 with a clamping tool to adjust the size of the sleeve ring 31, thereby improving operational convenience.

[0063] In the embodiment of the present application, the second clamping end 33 is optionally provided with a protruding limiting portion 331, and the limiting portion 331 abuts against the inner wall of the opening 321. In this way, during the assembly process, after adjusting the spacing between the first clamping end 32 and the second clamping end 33 and achieving a more reliable fixation of the flexible connecting tube 20, the relative position of the first clamping end 32 and the second clamping end 33 is limited by abutting the limiting portion 331 of the second clamping end 33 against the inner wall of the opening 321 of the first clamping end 32, thereby preventing the first clamping end 32 from slipping and dislocating relative to the second clamping end 33, and improving the clamping effect of the clamping member 30 on the flexible connecting tube 20.

[0064] Optionally, in the embodiments of the present application, Figure 6 and Figure 7As shown, the clamping member 30 further includes a fixing member 40, the first clamping end 32 and the second clamping end 33 are adjacently arranged, and the fixing member 40 is sequentially passed through the first clamping end 32 and the second clamping end 33 to fix the first clamping end 32 and the second clamping end 33. In this way, the first clamping end 32 and the second clamping end 33 are connected and fixed by the fixing member 40, so as to avoid the first clamping end 32 and the second clamping end 33 from being close to or away from each other when the size of the sleeve ring 31 is adjusted, which may easily cause misalignment and unstable fixation.

[0065] In some optional embodiments of the present application, such as Figure 6 As shown, the fixing member 40 is a bolt 46 and a nut 47, the first clamping end 32 is the first clamping plate 42, and the second clamping end 33 is the second clamping plate 43; the bolt 46 passes through the first clamping plate 42 and the second clamping plate 43 in sequence, and the nut 47 is sleeved on the bolt 46 and abuts against the second clamping plate 43 to connect the first clamping plate 42 to the second clamping plate 43. In this way, the connection between the first clamping plate 42 and the second clamping plate 43 is achieved by the bolt 46, and the nut 47 abuts against the second clamping plate 43 to connect and fix the first clamping plate 42 and the second clamping plate 43, which has a good limiting effect. Moreover, the bolt 46 and the nut 47 are used as the fixing member 40, which has a simple structure, is easy to operate, is widely used, and is relatively easy to implement.

[0066] In some other optional embodiments of the present application, Figure 7 As shown, the fixing member 40 is a fixing column 41, the first clamping end 32 is bent away from the second clamping end 33 to form a first clamping ring 44, and the second clamping end 33 is bent away from the first clamping end 32 to form a second clamping ring 45; the first clamping ring 44 and the second clamping ring 45 are arranged at intervals, and the fixing column 41 is sequentially inserted into the first clamping ring 44 and the second clamping ring 45. In this way, the first clamping end 32 is bent to form the first clamping ring 44, and the second clamping end 33 is bent to form the second clamping ring 45, which enhances the structural strength of the first clamping end 32 and the second clamping end 33, so that the first clamping end 32 and the second clamping end 33 are not easy to deform, and have good structural stability. And by sequentially inserting the fixing column 41 into the first clamping ring 44 and the second clamping ring 45, the connection and fixation between the first clamping ring 44 and the second clamping ring 45 is realized, which has a good limiting effect. Furthermore, the fixing column 41 is widely used as the fixing member 40 and is easy to implement, and has a simple structure and is easy to operate.

[0067] Optionally, in the embodiment of the present application, the clamping member 30 is provided with a plurality of weight-reducing holes 311, and the plurality of weight-reducing holes 311 are arranged at intervals along the circumference of the clamping member 30. Specifically, the weight-reducing holes 311 can be arranged at intervals along the circumference of the sleeve ring 31 of the clamping member 30. In this way, the weight of the clamping member 30 is reduced by the weight-reducing holes 311, which is conducive to the lightweight design of the product and reduces the material used for the clamping member 30. The weight-reducing holes 311 are arranged at intervals along the circumference of the clamping member 30, so that the clamping member 30 can achieve weight reduction at multiple positions in the circumferential direction, so that the weight-reducing holes 311 have a larger setting range and setting area.

[0068] In the embodiment of the present application, optionally, the inner wall of the clamping member 30 is provided with a protrusion 312, and the protrusion 312 abuts against the flexible connecting tube 20. Specifically, the inner wall of the clamping member 30 is connected to the flexible connecting tube 20, and the protrusion 312 is provided on the inner wall of the clamping member 30, so that the protrusion 312 abuts against the outer wall of the flexible connecting tube 20, so that a concave-convex fit is formed between the clamping member 30 and the flexible connecting tube 20, further improving the connection reliability and stability of the clamping member 30 to the flexible connecting tube 20, avoiding the clamping member 30 from slipping and fixing instability relative to the flexible connecting tube 20, and improving the sealing of the clamping member 30 to the flexible connecting tube 20. For example, the protrusion 312 can be provided at the edge of the weight-reducing hole 311, so that the protrusion 312 cooperates with the weight-reducing hole 311 and the flexible connecting tube 20 to achieve a better concave-convex fit, thereby improving the clamping effect and sealing effect of the clamping member 30 on the flexible connecting tube 20.

[0069] Optionally, in the embodiment of the present application, the elastic modulus of the clamping member 30 is greater than the elastic modulus of the flexible connecting tube 20. In this way, when the clamping member 30 is sleeved on the flexible connecting tube 20, the clamping member 30 can resist the elastic force generated by the deformation of the flexible connecting tube 20, so that the clamping member 30 is more firmly connected to the flexible connecting tube 20, and the elastic force generated by the flexible connecting tube 20 is prevented from resisting the clamping member 30 and causing the clamping member 30 to be easily loosened, so that the clamping member 30 has a more stable connection effect on the flexible connecting tube 20.

[0070] In summary, the battery pack described in the embodiments of the present application may at least include the following advantages:

[0071] In the embodiment of the present application, the battery pack includes: a plurality of liquid cooling plates, a plurality of flexible connecting tubes, a plurality of clamping members, and a plurality of battery cells; the plurality of liquid cooling plates are arranged at intervals, the battery cells are arranged between two adjacent liquid cooling plates, and the liquid cooling plates are provided with a water nozzle; the flexible connecting tube is connected between two adjacent water nozzles, the flexible connecting tube is communicated with the water nozzle, so as to connect the two adjacent liquid cooling plates; the clamping member is sleeved on the flexible connecting tube, and the flexible connecting tube is fixed to the water nozzle. In this way, the connection between the water nozzles of the two adjacent liquid cooling plates is realized through the flexible connecting tube. Since the flexible connecting tube is flexible and can be deformed, it is not easy to break, and has good flexibility, which reduces the risk of the hard pipe fittings being easily broken and damaged by stress or even detached from the liquid cooling plate when the existing liquid cooling plate is installed. The flexible connecting tube is clamped and fixed to the water nozzle by the clamping member, so that the flexible connecting tube has good connection reliability and stability to the adjacent water nozzle, so that the flexible connecting tube is more firmly connected to the water nozzle, and the risk of the flexible connecting tube being easily detached from the water nozzle of the liquid cooling plate is reduced. Furthermore, the connection between the flexible connecting pipe and the water nozzle is well sealed by the clamping piece, preventing the cooling medium in the liquid cooling plate from leaking out of the water nozzle. Thus, the problem in the prior art that the connection water nozzles of adjacent liquid cooling plates are deviated due to the tolerance between the liquid cooling plate and the hard pipe fittings, resulting in inconvenient installation and poor stability between the hard pipe fittings and the connection ends is solved. The structural stability and sealing of the battery pack are improved.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: The battery pack comprises: a plurality of liquid cooling plates (10), a plurality of flexible connecting tubes (20), a plurality of clamping members (30) and a plurality of battery cells (50); A plurality of the liquid cooling plates (10) are arranged at intervals, the battery cells (50) are arranged between two adjacent liquid cooling plates (10), and the liquid cooling plates (10) are provided with water nozzles (11); The flexible connecting pipe (20) is connected between two adjacent water nozzles (11), and the flexible connecting pipe (20) is in communication with the water nozzles (11) so as to connect the two adjacent liquid cooling plates (10); The clamping member (30) is sleeved on the flexible connecting pipe (20) and fixes the flexible connecting pipe (20) to the water nozzle (11).

2. The battery pack according to claim 1, characterized in that: The flexible connecting pipe (20) has a protruding section (21), the protruding section (21) is connected to two adjacent water nozzles (11), and the protruding section (21) can expand or contract.

3. The battery pack according to claim 1, characterized in that: The flexible connecting pipe (20) has a recessed section (22) and an anti-slip section (23) connected to the recessed section (22); The anti-slip section (23) is sleeved on a side of the water nozzle (11) close to the liquid cooling plate (10), and the clamping member (30) is sleeved on the recessed section (22) and clamps the recessed section (22) on a side of the water nozzle (11) away from the liquid cooling plate (10).

4. The battery pack according to claim 2, characterized in that: The protruding section (21) is in the shape of a hollow cylinder, a sphere or an ellipsoid.

5. The battery pack according to claim 1, characterized in that: The clamping member (30) comprises a sleeve ring (31), a first clamping end (32) and a second clamping end (33); The sleeve ring (31) is sleeved on the flexible connecting tube (20) and elastically abuts against the flexible connecting tube (20); the first clamping end (32) is connected to one circumferential end of the sleeve ring (31); the second clamping end (33) is connected to the other circumferential end of the sleeve ring (31); the first clamping end (32) and the second clamping end (33) are elastically connected via the sleeve ring (31).

6. The battery pack according to claim 5, characterized in that: The first clamping end (32) is provided with an opening (321), the second clamping end (33) is passed through the opening (321) and extends away from the first clamping end (32), and the second clamping end (33) approaches or moves away from the first clamping end (32) through the opening (321).

7. The battery pack according to claim 6, characterized in that: The second clamping end (33) is provided with a protruding limiting portion (331), and the limiting portion (331) abuts against the inner wall of the opening (321).

8. The battery pack according to claim 5, characterized in that: The clamping member (30) further comprises a fixing member (40), the first clamping end (32) and the second clamping end (33) being arranged adjacent to each other, and the fixing member (40) being passed through the first clamping end (32) and the second clamping end (33) in sequence to fix the first clamping end (32) and the second clamping end (33).

9. The battery pack according to claim 8, characterized in that: The fixing member (40) is a bolt (46) and a nut (47), the first clamping end (32) is a first clamping plate (42), and the second clamping end (33) is a second clamping plate (43); The bolt (46) passes through the first clamping plate (42) and the second clamping plate (43) in sequence, and the nut (47) is sleeved on the bolt (46) and abuts against the second clamping plate (43) to connect the first clamping plate (42) to the second clamping plate (43).

10. The battery pack according to claim 8, characterized in that: The fixing member (40) is a fixing column (41), the first clamping end (32) is bent away from the second clamping end (33) to form a first clamping ring (44), and the second clamping end (33) is bent away from the first clamping end (32) to form a second clamping ring (45); the first clamping ring (44) and the second clamping ring (45) are arranged at intervals, and the fixing column (41) is sequentially passed through the first clamping ring (44) and the second clamping ring (45).

11. The battery pack according to claim 1, characterized in that: The clamping piece (30) is provided with a plurality of weight-reducing holes (311), and the plurality of weight-reducing holes (311) are arranged at intervals along the circumference of the clamping piece (30).

12. The battery pack according to claim 1, characterized in that: The inner wall of the clamping member (30) is provided with a protrusion (312), and the protrusion (312) abuts against the flexible connecting tube (20).

13. The battery pack according to claim 1, characterized in that: The elastic modulus of the clamping member (30) is greater than the elastic modulus of the flexible connecting pipe (20).

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