Battery cell module, battery pack and vehicle

Abstract

The utility model provides a battery cell module, a battery pack and a vehicle, and relates to the technical field of cylindrical battery cells. The battery cell module provided by the utility model comprises a liquid cooling plate and two battery cell assemblies, each battery cell assembly comprises at least two layers of battery cell rows which are staggered and stacked up and down, each battery cell row comprises a plurality of cylindrical battery cells which are horizontally arranged in sequence, the liquid cooling plate is arranged between the two battery cell assemblies, the liquid cooling plate abuts against the cylindrical battery cells, and a refrigerant is introduced into the liquid cooling plate; and the liquid cooling plate cools the cylindrical battery core by utilizing the phase change of a refrigerant. Through the arrangement mode, the horizontally arranged cylindrical battery cells are cooled in a direct cooling mode of the liquid cooling plate, so that the liquid cooling plate can conveniently and quickly absorb heat of the cylindrical battery cells, and the heat dissipation effect of the cylindrical battery cells is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to cylindrical battery cell technology, in particular to a battery cell module, a battery pack and a vehicle. BACKGROUND

[0002] Cylindrical battery cells can be used in battery packs in new energy vehicles, and cylindrical battery cells have the advantages of small volume and better absorption of expansion force.

[0003] At present, in the prior art, multiple cylindrical battery cells are assembled into a battery cell row, and multiple battery cell rows are stacked up and down to expand the energy density. A large amount of heat is generated by the cylindrical battery cells during operation.

[0004] However, the heat generated by the cylindrical battery cells will affect the normal operation of the cylindrical battery cells, and even a large amount of heat accumulation will cause damage to the cylindrical battery cells. CONTENT OF THE INVENTION

[0005] Therefore, the present application provides a battery cell module, a battery pack and a vehicle, which can improve the heat dissipation effect of the cylindrical battery cells.

[0006] To achieve the above-mentioned purpose, the present application provides a battery cell module, a battery pack and a vehicle, which adopt the following technical solutions:

[0007] In a first aspect, the present application provides a battery cell module, comprising: a liquid cooling plate and two battery cell assemblies;

[0008] The battery cell assembly comprises at least two layers of battery cell rows stacked alternately up and down;

[0009] The battery cell row comprises a plurality of cylindrical battery cells arranged in sequence in a horizontal manner;

[0010] The liquid cooling plate is arranged between the two battery cell assemblies and abuts against the cylindrical battery cells;

[0011] The liquid cooling plate is used for introducing refrigerant, and the liquid cooling plate is configured to cool the cylindrical battery cells by using the phase change of the refrigerant.

[0012] In a possible implementation manner, the battery cell module provided by the present application is arranged in the length direction of the liquid cooling plate.

[0013] In a possible implementation manner, the battery cell module provided by the present application further comprises a frame, the frame has a mounting cavity, and the two battery cell assemblies and the liquid cooling plate are arranged in the mounting cavity;

[0014] The width direction of the mounting cavity is consistent with the length direction of each cylindrical battery cell;

[0015] The width direction of the mounting cavity is arranged in the length direction of the vehicle.

[0016] In a possible implementation, the battery cell module provided in the application has a refrigerant passage for the refrigerant in the liquid cooling plate.

[0017] The same end of the liquid cooling plate has a refrigerant inlet and a refrigerant outlet.

[0018] The refrigerant inlet and the refrigerant outlet are respectively communicated with two ends of the refrigerant passage.

[0019] In a possible implementation, the battery cell module provided in the application has the refrigerant inlet and the refrigerant outlet respectively arranged at the lower part and the upper part of the end of the liquid cooling plate.

[0020] In a possible implementation, the battery cell module provided in the application has the refrigerant inlet comprising a refrigerant inlet valve seat and a refrigerant inlet pipe.

[0021] The refrigerant inlet valve seat is communicated with one end of the refrigerant passage, and the refrigerant inlet valve seat is arranged at one side of the liquid cooling plate, and one end of the refrigerant inlet pipe is communicated with the refrigerant inlet valve seat.

[0022] The refrigerant outlet comprises a refrigerant outlet valve seat and a refrigerant outlet pipe, the refrigerant outlet valve seat is communicated with the other end of the refrigerant passage, the refrigerant outlet valve seat is arranged at the other side of the liquid cooling plate, and one end of the refrigerant outlet pipe is communicated with the refrigerant outlet valve seat.

[0023] In a possible implementation, the battery cell module provided in the application further comprises a support plate.

[0024] The support plate is arranged between two battery cell rows arranged in an up-and-down staggered manner.

[0025] The opposite sides of the support plate respectively have limiting grooves matched with the side surfaces of the battery cell rows.

[0026] The battery cell rows are correspondingly clamped in the limiting grooves.

[0027] In a possible implementation, the battery cell module provided in the application has the support plate being a cold plate.

[0028] In a second aspect, the application provides a battery pack comprising a frame and at least two battery cell modules as described above arranged in the frame.

[0029] In a third aspect, the application provides a vehicle comprising a vehicle body and a battery pack as described above arranged on the vehicle body.

[0030] This application provides a battery cell module, a battery pack, and a vehicle. The battery cell module includes a liquid cooling plate and two battery cell assemblies. Each battery cell assembly includes at least two layers of staggered stacked cell rows. Each cell row includes multiple cylindrical cells arranged horizontally in sequence. The liquid cooling plate is positioned between the two battery cell assemblies and in contact with the cylindrical cells. A refrigerant is circulated within the liquid cooling plate, which cools the cylindrical cells using a phase change in the refrigerant. This arrangement, using direct cooling with the liquid cooling plate to cool the horizontally arranged cylindrical cells, allows for rapid heat absorption by the liquid cooling plate, thereby improving the heat dissipation effect of the cylindrical cells.

[0031] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the technical solutions provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0032] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this application, and this application is not limited to the specific embodiments described below.

[0033] Figure 1 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0034] Figure 2 for Figure 1 A partial diagram of the exploded structure;

[0035] Figure 3 This is a partial structural diagram of a cell module and a battery pack provided in an embodiment of this application;

[0036] Figure 4 for Figure 3 Partial structural diagram;

[0037] Figure 5 for Figure 4 A partial structural diagram of the Zhongdian cell module;

[0038] Figure 6 for Figure 4 A partial internal structure diagram;

[0039] Figure 7 for Figure 6 Schematic diagram of the liquid cooling plate in the middle;

[0040] Figure 8 This is a partial exploded structure diagram of the battery cell assembly provided in the embodiments of this application;

[0041] Figure 9 For Figure 7 Part of the internal structure of the liquid cooling plate is shown in the schematic diagram.

[0042] Figure 10 The structure of the cylindrical battery cell provided by the embodiment of the present application is shown in the schematic diagram.

[0043] Explanation of reference signs:

[0044] 100, liquid cooling plate; 101, refrigerant channel;

[0045] 200, battery cell assembly; 210, battery cell row; 211, cylindrical battery cell; 220, support plate; 221, limiting groove; 230, insulation strip;

[0046] 300, frame;

[0047] 400, refrigerant inlet piece; 410, inlet valve seat; 420, refrigerant inlet pipe;

[0048] 500, refrigerant outlet piece; 510, outlet valve seat; 520, refrigerant outlet pipe;

[0049] 600, connecting seat;

[0050] 700, rack.

[0051] Through the above-mentioned drawings, the specific embodiments of the present application have been shown, and more detailed descriptions will be given hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions in the embodiments of the present application will be described in more detail below in combination with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference signs represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present application. The embodiments of the present application will be described in detail below in combination with the drawings.

[0053] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited, the terms "mount", "connect", "connect" should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of 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.

[0054] In the description of the embodiments of the present application, it should be understood that the terms "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation to the present application.

[0055] In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0056] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a particular order or sequence.

[0057] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] New energy vehicles aim to provide more environmentally friendly and energy-saving transportation through advanced vehicle power control and driving technology. These vehicles no longer rely on traditional gasoline or diesel fuel, but use electricity, hydrogen or other unconventional energy as the main power source. In a broad sense, new energy vehicles include all vehicles that use non-petroleum fuels, while in a narrow sense, they usually refer to vehicles that use unconventional fuels, among which electric new energy vehicles are particularly widely used, and the power source of electric new energy vehicles is usually cylindrical batteries, which are widely used because of their small size, stable structure, better absorption of expansion force and other advantages.

[0059] In the related art, a new energy vehicle battery pack includes a frame body and a plurality of battery cell modules arranged in the frame body, each battery cell module collectively provides energy source for the vehicle, the battery cell module includes a plurality of battery cell assemblies, and the battery cell assembly includes a plurality of cylindrical battery cells arranged in a row, the energy density is expanded by stacking the plurality of cylindrical battery cells in multiple layers one above another, and since the cylindrical battery cells generate heat during operation, the heat needs to be eliminated to ensure normal operation of the cylindrical battery cells.

[0060] Based on the above technical problem, the embodiment of the present application provides a battery cell module, a battery pack and a vehicle, in which the battery cell module includes a liquid cooling plate and two battery cell assemblies, the battery cell assembly includes at least two layers of battery cell rows stacked one above another in a staggered manner, the battery cell row includes a plurality of cylindrical battery cells arranged in a horizontal row one after another, the liquid cooling plate is arranged between the two battery cell assemblies, the liquid cooling plate abuts against the cylindrical battery cells, the liquid cooling plate is used for passing in refrigerant, and the liquid cooling plate cools the cylindrical battery cells by using phase change of the refrigerant. Through the above arrangement, the horizontal cylindrical battery cells are cooled by using the direct cooling of the liquid cooling plate, the liquid cooling plate can quickly absorb the heat of the cylindrical battery cells, and the heat dissipation effect of the cylindrical battery cells is improved.

[0061] It should be noted that, Figures 1 to 10 The schematic diagram of each component in the battery cell module, the battery pack and the vehicle is shown, and the specific structure of the remaining components in the battery cell module, the battery pack and the vehicle is not limited to Figures 1 to 10 The example.

[0062] The technical scheme of the present application and how the technical scheme of the present application solves the above technical problems will be described in detail in the following specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in detail in some embodiments. The embodiments of the present application will be described with reference to the accompanying drawings:

[0063] Referring to Figures 1 to 6 The embodiment of the present application provides a battery cell module, which includes a liquid cooling plate 100 and two battery cell assemblies 200.

[0064] The battery cell assembly 200 includes at least two layers of battery cell rows 210 stacked one above another in a staggered manner.

[0065] The battery cell assembly 200 includes two layers of battery cell rows 210, and of course, the battery cell assembly 200 can also include more than two layers of battery cell rows 210, for example, 3 layers or 4 layers. The specific number of battery cell rows 210 can be selected according to the actual application space, and the number of battery cell rows 210 in the battery cell assembly 200 is not limited in the embodiment of the present application.

[0066] The cell row 210 includes a plurality of cylindrical cells 211 arranged in sequence in a horizontal manner. The horizontal arrangement of the cylindrical cells 211 can improve the space utilization of the cylindrical cells 211. In addition, the arrangement facilitates the arrangement of the pressure relief structure in the cell module. In an example, the cylindrical cells 211 are lithium iron phosphate cells. The lithium iron phosphate cells have high thermal stability, which can improve the safety of the cell module. In addition, the lithium iron phosphate cells have good environmental protection.

[0067] The horizontal arrangement of the cylindrical cells 211 can fully utilize the space and facilitate the arrangement of the pressure relief structure in the cell module. When the cell module is subjected to a collision or an impact force, the side wall of the horizontally arranged cylindrical cell 211 is less likely to be affected by the impact force, thereby protecting the cylindrical cell 211.

[0068] The liquid cooling plate 100 is arranged between the two cell assemblies 200 and abuts against the cylindrical cells 211. In an example, the liquid cooling plate 100 abuts against the end portions of the left and right adjacent cylindrical cells 211.

[0069] The liquid cooling plate 100 is configured to cool the cylindrical cells 211 by using the phase change of the refrigerant.

[0070] It should be noted that the liquid cooling plate 100 is a prior art in the related field. The main function of the liquid cooling plate 100 is to absorb the heat generated on the cell row 210 by heat conduction, thereby dissipating the heat generated on the cell row 210 and eliminating the negative effects of the heat generated on the cell row 210. Here, the phase change of the refrigerant is a prior art in the related field. The phase change of the refrigerant is accompanied by heat absorption and heat release processes. The phase change of the refrigerant can absorb the heat of the cylindrical cells 211 and release the heat at other locations. The phase change of the refrigerant can dissipate the heat of the cylindrical cells 211.

[0071] In the above embodiment, the liquid cooling plate 100 is arranged between the two cell assemblies 200, and the opposite sides of the liquid cooling plate 100 abut against the side surfaces of the cell rows 210, which are equivalent to abutting against the end surfaces of the cylindrical cells 211. The liquid cooling plate 100 is used to introduce the refrigerant to dissipate the heat of the cell rows 210. By using the above arrangement, the liquid cooling plate 100 can dissipate the heat of at least four cell rows 210 on both sides of the liquid cooling plate 100 by using the direct cooling method. Compared with the conventional arrangement of the liquid cooling plate 100 between the two cell rows 210, the arrangement can improve the heat dissipation effect of the liquid cooling plate 100 on the cell rows 210 and improve the heat dissipation effect of the cylindrical cells 211.

[0072] And the battery cell assembly 200 includes at least two layers of battery cell rows 210 stacked alternately up and down, it can be understood that there is a gap between two adjacent battery cell rows 210, and the two layers of battery cell rows 210 are stacked alternately up and down, which can make full use of the gap space between the two adjacent layers of battery cell rows 210, and under the premise of a certain battery pack space of the vehicle, the space in the battery pack can be fully utilized, the energy density is improved, the space utilization is improved, and the capacity of the battery pack is expanded.

[0073] In addition, the opposite sides of one liquid cooling plate 100 are respectively in abutment with two battery cell assemblies 200, and the battery cell assembly 200 includes at least two battery cell rows 210 arranged up and down, which is equivalent to each cylindrical battery cell 211 arranged horizontally, which helps to fully utilize the internal space of the battery pack. And in the extension direction of the length of the vehicle, the number of battery cell modules can be designed as needed.

[0074] The cylindrical battery cell 211 has high energy density and stable structure, and the side of the cylindrical battery cell 211 is integrally formed, which has good sealing performance and reduces potential safety hazards.

[0075] A plurality of cylindrical battery cells 211 are arranged along the length direction of the liquid cooling plate 100.

[0076] The sides of two adjacent cylindrical battery cells 211 are in close abutment. It should be noted that Figure 10 As shown in FIG. 1, the cylindrical battery cell 211 has two circular end faces and a cylindrical side face. A plurality of cylindrical battery cells 211 are arranged along the length direction of the liquid cooling plate 100, and the end face of the cylindrical battery cell 211 is in abutment with the liquid cooling plate 100, so that the end face of each cylindrical battery cell 211 is in abutment with the liquid cooling plate 100, and the axis of the cylindrical battery cell is perpendicular to the plane on which the liquid cooling plate 100 is located. The sides of two adjacent cylindrical battery cells 211 are in close abutment.

[0077] Through the above arrangement, on the one hand, the space in the battery pack can be fully utilized, the energy density is expanded, and on the other hand, more cylindrical battery cells 211 can be cooled through the liquid cooling plate 100, further improving the cooling effect of the liquid cooling plate 100.

[0078] In a possible implementation, continuing to refer to Figure 4 and Figure 5 As shown in FIG. 1, the battery cell module further includes a frame 300, and the frame 300 has a mounting cavity, and the two battery cell assemblies 200 and the liquid cooling plate 100 are arranged in the mounting cavity.

[0079] The width direction of the mounting cavity is consistent with the length direction of each cylindrical battery cell 211.

[0080] The width direction of the mounting cavity is used to be arranged along the length direction of the vehicle.

[0081] In the above embodiment, the frame 300 is arranged on the side away from each other of the two battery cell assemblies 200, and the frame 300 provides a mounting position for the battery cell assemblies 200. By arranging the frame 300, the battery cell module can be integrated, and the assembly and overall installation of the battery cell module into the battery pack are facilitated. The width direction of the mounting cavity is consistent with the length direction of each cylindrical battery cell 211, and more cylindrical battery cells 211 can be mounted in the mounting cavity, and the waste of space in the mounting cavity is reduced. In addition, the width direction of the mounting cavity is arranged along the length direction of the vehicle, and it can be understood that the length direction of the cylindrical battery cell 211 is arranged along the length direction of the vehicle. During the driving process of the vehicle, there are acceleration and deceleration processes, and under the influence of inertia, the cylindrical battery cells in the battery pack will be displaced. Arranging the length direction of the cylindrical battery cell 211 along the length direction of the vehicle can alleviate the influence of inertia on the cylindrical battery cell 211 during the driving process of the vehicle, improve the stability of the cylindrical battery cell 211, and thus improve the stability of the overall battery pack.

[0082] In a possible implementation, referring to FIGS. 1 to 3, the liquid cooling plate 100 has a refrigerant passage 101 for passing refrigerant. Figure 7 and Figure 9 The liquid cooling plate 100 has a refrigerant inlet member 400 and a refrigerant outlet member 500 at the same end.

[0083] The liquid cooling plate 100 has a refrigerant inlet member 400 and a refrigerant outlet member 500 at the same end.

[0084] The refrigerant inlet member 400 and the refrigerant outlet member 500 are in communication with the two ends of the refrigerant passage 101, respectively. The refrigerant inlet member 400 and the refrigerant outlet member 500 are in communication with the thermal management system of the vehicle.

[0085] In the above embodiment, the refrigerant inlet member 400 and the refrigerant outlet member 500 are arranged at the same end of the liquid cooling plate 100, so that the refrigerant inlet member 400 and the refrigerant outlet member 500 can be mounted on the same side of the battery cell module, thereby reducing the space occupation of the refrigerant inlet member 400, the refrigerant outlet member 500, and the liquid cooling plate 100 in the horizontal direction, and further expanding the energy density of the battery pack.

[0086] In addition, the refrigerant passage 101 of the liquid cooling plate 100 has refrigerant therein, and the refrigerant has good heat dissipation performance and high heat exchange efficiency, which can improve the heat dissipation effect. In addition, the refrigerant has good environmental protection performance, is easy to maintain, and has high flexibility. The refrigerant circulates between the thermal management system of the vehicle, the refrigerant inlet member 400, the refrigerant passage 101 of the liquid cooling plate 100, and the refrigerant outlet member 500.

[0087] In a possible implementation, the refrigerant inlet piece 400 and the refrigerant outlet piece 500 are arranged at the lower part and the upper part of the end of the liquid cooling plate 100 respectively. It can be understood that the liquid cooling plate 100 is arranged vertically between the two battery cell assemblies 200, and when the refrigerant flows in the refrigerant channel 101 of the liquid cooling plate 100, the refrigerant first enters the refrigerant channel 101 from the lower part of the liquid cooling plate 100, and due to the factor of gravity, the refrigerant needs to fill the refrigerant channel 101 in the lower part before flowing out of the liquid cooling plate 100 from the upper part of the refrigerant channel 101. Through the above arrangement, the refrigerant in the liquid cooling plate 100 can be filled, and the refrigerant can fully take away the heat of the liquid cooling plate 100, which helps to improve the heat dissipation effect.

[0088] In addition, by arranging the refrigerant inlet piece 400 and the refrigerant outlet piece 500 at the lower part and the upper part of the liquid cooling plate 100 respectively, the refrigerant inlet piece 400 and the refrigerant outlet piece 500 utilize the space of the upper part and the lower part of the liquid cooling plate 100, so as to further reduce the space occupation of the refrigerant inlet piece 400 and the refrigerant outlet piece 500; and when the refrigerant flows in the refrigerant channel 101, the refrigerant can enter the upper part from the lower part of the liquid cooling plate 100 and be discharged, so as to prevent the refrigerant channels 101 in the liquid cooling plate 100 from affecting each other, and indirectly improve the cooling effect on the battery cell row 210.

[0089] In a possible implementation, the refrigerant inlet piece 400 includes an inlet valve seat 410 and a refrigerant inlet pipe 420.

[0090] The inlet valve seat 410 is in communication with one end of the refrigerant channel 101, and the inlet valve seat 410 is arranged at one side of the liquid cooling plate 100. One end of the refrigerant inlet pipe 420 is in communication with the inlet valve seat 410.

[0091] The refrigerant outlet piece 500 includes an outlet valve seat 510 and a refrigerant outlet pipe 520.

[0092] The outlet valve seat 510 is in communication with the other end of the refrigerant channel 101, and the outlet valve seat 510 is arranged at the other side of the liquid cooling plate 100. One end of the refrigerant outlet pipe 520 is in communication with the outlet valve seat 510.

[0093] In a specific implementation, a connecting seat 600 is welded at one side of the liquid cooling plate 100 and at the position where the inlet valve seat 410 is located. The inlet valve seat 410 is detachably connected to the connecting seat 600 through bolts. The inlet valve seat 410 has an inlet channel. One end of the inlet channel is in communication with the inlet end of the refrigerant channel 101, and the other end of the inlet channel is in communication with one end of the refrigerant inlet pipe 420.

[0094] In the above embodiment, by adopting the arrangement of the liquid inlet valve seat 410 and the refrigerant liquid inlet pipe 420, the refrigerant liquid inlet pipe 420 is facilitated to communicate with the refrigerant channel 101 in the liquid cooling plate 100 through the liquid inlet valve seat 410, and the arrangement of the liquid inlet valve seat 410 improves the fixing strength of the refrigerant liquid inlet pipe 420, preventing the refrigerant liquid inlet pipe 420 from being detached from the liquid cooling plate 100 due to vibration of the vehicle.

[0095] The other side of the liquid cooling plate 100 is welded with a connecting seat 600 at the position where the liquid outlet valve seat 510 is located, and the liquid outlet valve seat 510 is detachably connected to the connecting seat 600 through bolts; the liquid outlet valve seat 510 has a liquid outlet channel therein, one end of the liquid outlet channel communicates with the liquid outlet end of the refrigerant channel 101, and the other end of the liquid outlet channel communicates with one end of the refrigerant liquid outlet pipe 520.

[0096] By adopting the arrangement of the liquid outlet valve seat 510 and the refrigerant liquid outlet pipe 520, the refrigerant liquid outlet pipe 520 is facilitated to communicate with the refrigerant channel 101 in the liquid cooling plate 100 through the liquid outlet valve seat 510, and the arrangement of the liquid outlet valve seat 510 improves the fixing strength of the refrigerant liquid outlet pipe 520, preventing the refrigerant liquid outlet pipe 520 from being detached from the liquid cooling plate 100 due to vibration of the vehicle.

[0097] In specific implementation, the liquid cooling plate 100 further has sensors (not shown in the figure) arranged on at least one of the refrigerant liquid inlet pipe 420 and the refrigerant liquid outlet pipe 520; in the embodiment, the sensors are temperature sensors, in other embodiments, the sensors can also be sensors for detecting the flow rate of the refrigerant, or sensors for detecting leakage, etc., and the number of sensors can be adjusted as needed, for example, sensors are arranged at different positions on the refrigerant liquid inlet pipe 420 and the refrigerant liquid outlet pipe 520.

[0098] By adopting the above technical solution, by adopting the arrangement of the sensors, the temperature or other characteristic factors in the refrigerant liquid inlet pipe 420 and the refrigerant liquid outlet pipe 520 are facilitated to be detected, so that the flow rate of the refrigerant is facilitated to be adjusted in time, thereby indirectly improving the heat dissipation effect of the liquid cooling plate 100 on the cell row 210.

[0099] In a possible implementation, referring to Figure 8 It is shown that the cell assembly 200 further includes a support plate 220.

[0100] The support plate 220 is arranged between the two cell rows 210 arranged in an up-and-down staggered manner.

[0101] The opposite sides of the support plate 220 respectively have limiting grooves 221 matched with the side surfaces of the cell rows 210.

[0102] The cell rows 210 are correspondingly clamped in the limiting grooves 221.

[0103] Specifically, the opposite sides of the support plate 220 are respectively provided with a limiting groove 221 matched with the side surface of the battery cell row 210. The limiting groove 221 is an arc-shaped groove matched with the side surface of the cylindrical battery cell 211.

[0104] By arranging the support plate 220 and detachably connecting the support plate 220 in the battery pack, the fixing strength of the battery cell assembly 200 can be improved, and the stability of the battery cell assembly 200 can be improved. In addition, the support plate 220 can separate the upper and lower two layers of battery rows, and eliminate the negative effects of the electrical gap between the adjacent two layers of battery rows on the battery row.

[0105] Of course, the support plate 220 also has a certain insulation effect, which can prevent short circuit between the adjacent two layers of battery cell rows 210 and improve the safety of the battery cell row 210.

[0106] In another possible implementation, the support plate 220 is a cold plate for cooling the cylindrical battery cell 211 abutting against the support plate 220.

[0107] The battery cell assembly 200 further comprises at least two insulation strips 230.

[0108] The insulation strip 230 is bonded to the lower battery cell row 210.

[0109] The projection of the end surface of the battery cell row 210 towards the insulation strip 230 is located in the insulation strip 230.

[0110] In the above embodiment, the insulation strip 230 is bonded to the lower battery cell row 210, which has an insulation effect on the battery cell assembly 200, preventing the battery cell assembly 200 from short circuiting with the battery pack. In addition, the insulation strip 230 is arranged between the battery pack and the battery row, which expands the gap between the battery row and the battery pack, facilitates filling and bonding glue into the gap, and further improves the stability of the battery cell assembly 200.

[0111] The projection of the end surface of the battery cell row 210 towards the insulation strip 230 is located in the insulation strip 230. It can be understood that the end surface of the cylindrical battery cell 211 has a positive electrode and a negative electrode for power supply. The projection of the end surface of the battery cell row 210 towards the insulation strip 230 is located in the insulation strip 230, which can prevent the end surface of the cylindrical battery cell 211 from contacting the battery pack, thereby improving the safety.

[0112] The embodiment of the application further provides a battery pack. Referring to Figure 1 and Figure 2 The battery pack comprises a frame body 700 and at least two battery cell modules described above arranged in the frame body 700.

[0113] The specific structure of the battery cell module has been described in detail above, and will not be described again. The battery pack provided with the battery cell module can improve the heat dissipation effect of the battery pack, and fully utilize the installation space in the battery pack to expand the capacity of the battery pack.

[0114] In a possible implementation, the embodiment of the application further provides a vehicle, including a vehicle body and the battery pack. The battery pack has been described above, and will not be described again.

[0115] The implementation principle of the battery cell module, the battery pack and the vehicle is as follows: in the technical solution, the battery cell module includes a liquid cooling plate 100 and two battery cell assemblies 200, the battery cell assembly 200 includes at least two layers of battery cell rows 210 stacked alternately, the battery cell row 210 includes a plurality of cylindrical battery cells 211 arranged in sequence in a horizontal manner, the liquid cooling plate 100 is arranged between the two battery cell assemblies 200, and the liquid cooling plate 100 abuts against the cylindrical battery cells 211, the liquid cooling plate 100 is used for passing in refrigerant, and the liquid cooling plate 100 cools the cylindrical battery cells 211 by using the phase change of the refrigerant. Through the above arrangement, the cylindrical battery cells 211 arranged in a horizontal manner are cooled by using the direct cooling of the liquid cooling plate 100, the liquid cooling plate 100 can quickly absorb the heat of the cylindrical battery cells 211, and the heat dissipation effect of the cylindrical battery cells 211 is improved.

[0116] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein.

[0117] It is intended to include all such variations and modifications in connection with the principles of the application as can be desired by the person of ordinary skill in the art. Applications exemplified in the specification and examples should be considered to consist only of the preferred embodiments described therein and contemplated to include any changes in the art to which the preferred embodiments pertains, and that the applications intended to cover what is claimed by the words of the claims that follow, rather than in the description per se. What is claimed is:

[0118] It is to be understood that the application is not limited to the precise construction described in the specification and shown in the drawings, and various modifications and changes can be effected therein by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims appended hereto.

Claims

1. A battery cell module, characterized in that, The application relates to a battery module and a battery pack. The battery module comprises a liquid cooling plate (100) and two battery cell assemblies (200). The battery cell assembly (200) comprises at least two layers of battery cell rows (210) stacked in an up-and-down staggered manner. The battery cell row comprises a plurality of cylindrical battery cells (211) arranged in a horizontal manner. The liquid cooling plate (100) is arranged between the two battery cell assemblies (200) and abuts against the cylindrical battery cells (211). The liquid cooling plate (100) is provided with a refrigerant channel (101) for the refrigerant.

2. The battery cell module of claim 1, wherein, The same end of the liquid cooling plate (100) is provided with a refrigerant inlet (400) and a refrigerant outlet (500).

3. The battery cell module of claim 1, wherein, The refrigerant inlet (400) and the refrigerant outlet (500) are respectively communicated with two ends of the refrigerant channel (101). The refrigerant inlet (400) and the refrigerant outlet (500) are respectively arranged at the lower part and the upper part of the end of the liquid cooling plate (100). The refrigerant inlet (400) comprises an inlet valve seat (410) and a refrigerant inlet pipe (420).

4. The battery cell module of any one of claims 1 to 3, wherein, The refrigerant outlet (500) comprises an outlet valve seat (510) and a refrigerant outlet pipe (520). The battery cell assembly (200) further comprises a support plate (220). The support plate (220) is arranged between two battery cell rows (210) arranged in an up-and-down staggered manner.

5. The battery cell module of claim 4, wherein, The support plate (220) is provided with a limiting groove (221) on the opposite sides of the support plate (220) and matched with the side surface of the battery cell row (210).

6. The battery cell module of claim 4, wherein, The battery cell row (210) is correspondingly clamped in the limiting groove (221). The support plate is a cold plate. The battery pack comprises a frame (700) and at least two battery modules arranged in the frame (700).

7. The battery cell module of any one of claims 1 to 3, wherein, The battery pack comprises a vehicle body and the battery module arranged on the vehicle body. ​ ​ ​ 8. The battery cell module of claim 7, wherein, ​ 9. A battery pack, characterized by, ​ 10. A vehicle characterized by comprising: ​

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