Battery cell module and battery pack

Abstract

The utility model provides a battery cell module and a battery pack, and relates to the field of new energy automobiles. The battery cell module comprises a battery pack, two end plates and two insulating plates, the battery pack comprises battery cell units and a battery cell frame, and the battery cell units are connected with the battery cell frame; the two end plates are connected with the battery cell frame and are positioned on two sides of the battery cell unit; the two insulating plates respectively correspond to the two end plates, and each insulating plate is positioned between the corresponding end plate and the battery cell unit; each insulating plate is attached to the corresponding battery cell unit and the corresponding end plate; each insulating plate is provided with at least one positioning groove, and the positioning grooves are matched with the battery cell frames. According to the battery cell module, the positioning grooves are formed in the insulating plate, so that the insulating plate can realize self-positioning, the position of the insulating plate is limited when the battery pack and the end plate are assembled, repeated assembly caused by assembly dislocation is avoided, the positioning of the assembly position of the insulating plate is more accurate, and the assembly accuracy and the assembly efficiency of the battery cell module are improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicles, and in particular to a battery core module and a battery pack. Background Art

[0002] In the power battery industry, the new energy vehicle battery pack is a complex integrated system, which is usually composed of multiple battery cells, T-beams, end plates, bottom plates and a series of insulation protection systems. The existing technology generally uses a pasting method to assemble the insulation protection structure with the battery cells and end plates to form a battery pack, which is prone to inaccurate positioning and assembly misalignment. Utility Model Content

[0003] The purpose of the utility model is to provide a battery cell module and a battery pack, which can realize the positioning of the insulating plate through the cooperation of the positioning grooves arranged on the insulating plate and the battery frame while achieving insulating contact, thereby improving assembly accuracy and assembly efficiency.

[0004] The embodiment of the utility model is achieved as follows:

[0005] In a first aspect, the utility model provides a battery cell module, comprising:

[0006] A battery pack, the battery pack includes a battery cell unit and a battery cell frame, the battery cell unit is connected to the battery cell frame;

[0007] Two end plates, both end plates are connected to the battery frame and are located on both sides of the battery unit; and two insulating plates, the two insulating plates correspond to the two end plates respectively, and each insulating plate is located between the corresponding end plate and the battery unit; each insulating plate is fitted with the battery unit and the corresponding end plate; each insulating plate is provided with at least one positioning groove, and the positioning groove cooperates with the battery frame.

[0008] In an optional embodiment, the battery cell frame includes two connecting side plates and a plurality of partition bars, the plurality of partition bars are arranged in parallel and at intervals, both ends of each partition bar are respectively connected to the two connecting side plates, and the two connecting side plates are respectively located on both sides of the battery cell unit, and each end plate is connected to the connecting side plate on the same side;

[0009] The battery cell unit comprises a plurality of battery cells, which are arranged in a plurality of rows along the arrangement direction of the partition bars, and at least one partition bar is arranged on both sides of each row of battery cells.

[0010] In an optional embodiment, a plurality of positioning grooves are arranged at intervals along the arrangement direction of the partition strips;

[0011] The battery cell frame also includes a plurality of first insulating members, each of which is connected to a corresponding partition bar, and each of which is matched with a positioning groove.

[0012] In an optional embodiment, the battery cell frame further includes a plurality of liquid cooling plates and a plurality of second insulating members;

[0013] Both ends of each liquid cooling plate are respectively connected to two connecting side plates, and the liquid cooling plate and the partition bar are located on the same side of the battery cell unit; multiple liquid cooling plates are arranged in parallel and at intervals along the arrangement direction of the partition bar; each liquid cooling plate corresponds to a column of battery cells, and a second insulating member is arranged between each liquid cooling plate and the corresponding column of battery cells;

[0014] The insulating plate is provided with a plurality of avoidance grooves at intervals along the arrangement direction of the liquid cooling plate; each avoidance groove is matched with at least one second insulating member.

[0015] In an optional embodiment, the battery cell frame further includes a plurality of connecting rods and a plurality of third insulating members;

[0016] Both ends of each connecting rod are connected to two end plates respectively, and the connecting rod is located on the side of the battery cell unit away from the partition bar; multiple connecting rods are arranged in parallel and at intervals along the arrangement direction of the partition bars, and a connecting rod is arranged on both sides of each column of battery cells; each third insulating member is sleeved on the corresponding connecting rod;

[0017] The insulating plate is provided with a plurality of clearance grooves at intervals along the arrangement direction of the connecting rods; each of the clearance grooves is matched with at least one third insulating member.

[0018] In an optional embodiment, the plurality of positioning grooves correspond one-to-one to the plurality of avoidance grooves; each avoidance groove is arranged between two adjacent positioning grooves.

[0019] In an optional embodiment, the insulating plate is provided with a plurality of first protrusions at intervals along the arrangement direction of the partition strips, each clearance groove is located between two first protrusions, and the two first protrusions are respectively located on both sides of the connecting rod corresponding to the clearance groove.

[0020] In an optional embodiment, the first insulating member includes a first insulating portion and two second insulating portions;

[0021] The partition bar is provided with a second protruding portion, and the first insulating portion is sleeved on the second protruding portion; the two second insulating portions are respectively located on both sides of the second protruding portion and connected to the partition bar.

[0022] In an optional embodiment, the end plate is provided with a plurality of grooves along the arrangement direction of the partition bars, and each groove cooperates with at least one partition bar.

[0023] In a second aspect, the utility model provides a battery pack, comprising a shell and a battery cell module of any one of the aforementioned embodiments, wherein the shell is connected to the battery cell module.

[0024] The beneficial effects of the embodiments of the utility model are:

[0025] The battery cell module includes a battery pack, two end plates and two insulating plates. The battery pack includes a battery cell unit and a battery cell frame. The battery cell unit is connected to the battery cell frame. The two end plates are connected to the battery cell frame and are located on both sides of the battery cell unit. The two insulating plates correspond to the two end plates respectively, and each insulating plate is located between the corresponding end plate and the battery cell unit. Each insulating plate is fitted with the battery cell unit and the corresponding end plate. Each insulating plate is provided with at least one positioning groove, which cooperates with the battery cell frame.

[0026] The battery cell module is provided with positioning grooves on the insulating plate, so that the insulating plate can cooperate with the battery frame through the positioning grooves during the installation process, thereby achieving self-positioning. Then, when assembling the battery pack and the end plate, the position of the insulating plate is limited to avoid repeated assembly caused by assembly misalignment, so that the assembly position of the insulating plate is more accurately positioned, and the assembly accuracy and efficiency of the battery cell module are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic structural diagram of a battery cell module from a first perspective provided by an embodiment of the utility model;

[0029] Figure 2 A schematic structural diagram of a battery cell module from a second viewing angle provided by an embodiment of the utility model;

[0030] Figure 3 A schematic diagram of the structure of an insulating plate provided in an embodiment of the utility model;

[0031] Figure 4 An exploded schematic diagram of a battery cell module provided in an embodiment of the utility model;

[0032] Figure 5 A schematic diagram of the structure of an insulating plate and a battery pack provided in an embodiment of the utility model;

[0033] Figure 6 For the utility model embodiment Figure 5 The enlarged view of point A in the middle;

[0034] Figure 7 For the utility model embodiment Figure 5 The enlarged view of point B in the middle;

[0035] Figure 8 For the utility model embodiment Figure 5Enlarged view of point C in the middle;

[0036] Fig. 9 It is a structural schematic diagram of the end plate of an embodiment of the utility model.

[0037] Icons: 400-cell module; 100-battery pack; 110-cell unit; 120-cell rack; 200-end plate; 210-groove; 300-insulating plate; 310-positioning groove; 320-avoidance groove; 330-giveaway groove; 340-first protrusion; 121-partitioning strip; 122-connecting side plate; 123-liquid cooling plate; 124-connecting rod; 125-first insulating member; 126-second insulating member; 127-third insulating member; 128-second protrusion; 129-first insulating member; 131-second insulating member. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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.

[0044] In the power battery industry, the battery pack of new energy vehicles is a complex integrated system, usually composed of multiple battery cells, T-beams, end plates, bottom plates and a series of insulation protection systems; the existing technology generally uses the method of pasting to assemble the insulation protection structure with the battery cells and end plates to form a battery pack. However, this assembly method is prone to inaccurate positioning and assembly misalignment.

[0045] Please refer to Figure 1-Figure 9 , this embodiment provides a battery pack, which can effectively improve the above-mentioned technical problems.

[0046] The battery pack includes a shell and a battery cell module 400. The battery cell module 400 is placed in the shell and connected to the shell. The shell is used to protect the battery cell module 400 and prevent the battery cell module 400 from being damaged by external structures.

[0047] The battery cell module 400 is described in detail below:

[0048] Please refer to Figure 1-Figure 9 The front, rear, left, and right directions shown in the figure are relative positional relationships that can be clearly known by those skilled in the art when the battery module 400 is conventionally placed. In the following content, the arrangement direction of the partition bar 121 can be understood as the left and right direction of the battery module 400.

[0049] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of a battery cell module 400 from a first viewing angle provided in an embodiment of the utility model. Figure 2 A schematic diagram of the structure of the battery module 400 provided in the second perspective of the embodiment of the utility model; Figure 1 and Figure 2The battery module 400 includes a battery pack 100, two end plates 200 and two insulating plates 300. The battery pack 100 includes a battery cell unit 110 and a battery cell frame 120, and the battery cell unit 110 is connected to the battery cell frame 120. The two end plates 200 are located on both sides of the battery cell unit 110 and are connected to the battery cell frame 120. The two insulating plates 300 correspond to the two end plates 200 respectively, and each insulating plate 300 is located between the corresponding end plate 200 and the battery cell unit 110, and each insulating plate 300 is attached to the battery cell unit 110 and the corresponding end plate 200, so that the end plate 200 is separated from the battery cell unit 110, and the two cannot be electrically contacted, which plays a protective role.

[0050] Please refer to Figure 3 , Figure 3 The schematic diagram of the structure of the insulating plate 300 in the battery module 400 provided in the embodiment of the utility model, each insulating plate 300 is provided with at least one positioning groove 310. Please refer to the figure and the figure, it can be understood that the positioning groove 310 cooperates with the battery frame 120.

[0051] The working principle of the battery module 400 is:

[0052] During the assembly process of the battery module 400, since the insulating plate 300 is provided with a positioning groove 310, the positioning groove 310 cooperates with the battery frame 120 to achieve the positioning of the insulating plate 300. In addition, in this embodiment, the insulating plate 300 is placed between the battery cell unit 110 and the end plate 200, and the insulating plate 300 fits the battery cell units 110 and the end plate 200 on both sides thereof, thereby clamping the insulating plate 300, so that the positioning and installation of the insulating plate 300 is achieved in this way, and according to the relative position of the insulating plate 300, it can protect the battery cell unit 110 while playing an insulating role. At the same time, the positioning function of the insulating plate 300 during the assembly process can improve the accuracy of assembly, avoid repeated assembly, and improve the efficiency of assembly.

[0053] Compared with the prior art that uses foam for insulation protection, this embodiment uses the hard physical properties of the insulation plate 300 itself to effectively overcome the safety protection needs of the raised edge characteristics of the end plate 200; it not only plays an insulating role, but also improves the protection effect. And compared with the prior art that uses foam or the insulation plate 300 to bond with the end plate 200, the insulation plate 300 in this embodiment can also use the positioning groove 310 to cooperate with the battery frame 120 to achieve the positioning and installation of the insulation plate 300, and connect the end plate 200 and the battery frame 120 by bolts and other connection methods, and the insulation plate 300 is located between the battery unit 110 and the end plate 200, and is clamped by the battery unit 110 and the end plate 200, so as to achieve the limitation of the insulation plate 300.

[0054] Specifically, refer to Figure 1 and Figure 2 In this embodiment, bolts are used to connect the end plate 200 and the cell frame 120. It can be understood that in other embodiments, other connection methods, such as welding, can be used according to specific design requirements, and other connection methods of the end plate 200 and the cell frame 120 are not limited here.

[0055] For further information, please refer to Figure 1-Figure 9 ,in, Figure 4 The exploded schematic diagram of the battery module 400 provided by the embodiment of the utility model, the battery frame 120 includes two connecting side plates 122 and a plurality of partition bars 121, and the plurality of partition bars 121 are arranged in parallel and at intervals. Figure 1 and Figure 2 Both ends of each partition bar 121 are respectively connected to two connecting side plates 122, and the two connecting side plates 122 are respectively located on both sides of the battery cell unit 110, and each end plate 200 is connected to the connecting side plate 122 on the same side, thereby making the structure of the battery cell module 400 more stable.

[0056] In the process of configuring the battery rack 120, in order to improve its installation stability and structural strength, the battery rack 120 includes two connecting side panels 122 and a plurality of partition bars 121. The plurality of partition bars 121 are arranged in parallel and spaced apart along the left and right directions as shown in the figure, and the plurality of partition bars 121 are all located at the bottom of the battery unit 110 to provide support for the battery unit 110.

[0057] According to the above structural arrangement, the two connecting side plates 122 can be arranged on both sides of the battery cell unit 110 respectively, and connected to both sides of the multiple partition bars 121 located at the bottom of the battery cell unit 110, so that the connecting side plates 122 can protect the battery cell unit 110. The insulating plate 300 is positioned by the cooperation of the multiple partition bars 121 and the positioning grooves 310. In addition, as shown in the figure, a connecting side plate 122 and an end plate 200 are on the same side of the integrated battery cell unit 110, and the connecting side plate 122 is connected to the end plate 200 on the same side, thereby fixing the end plate 200, thereby completing the assembly of the battery cell module 400.

[0058] Please refer to Figure 1 and Figure 2 The battery cell unit 110 includes a plurality of battery cells, which are arranged into a plurality of columns along the arrangement direction of the partition bars 121 , and at least one partition bar 121 is arranged on both sides of each column of battery cells for supporting and partitioning battery cells in different columns.

[0059] According to the above content, in the process of assembling the battery cell module 400, the assembly position of the battery cell frame 120 can be limited by the battery cells, and at least one partition bar 121 is provided on both sides of each column of battery cells, so that the partition bar 121 can separate the two adjacent columns of battery cells to avoid the risk of creepage; after determining the position of the partition bar 121, the two connecting side panels 122 are arranged on both sides of the battery cell unit 110, and the connecting side panels 122 are connected to one end of the multiple partition bars 121, thereby completing the assembly of the partition bars 121 and the connecting side panels 122.

[0060] Specifically, please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of the battery cell module 400 provided by the embodiment of the utility model without the end plate 200. Figure 6 For the utility model embodiment Figure 5 The enlarged picture of the local A in the figure is as follows: Figure 5 As shown, the plurality of positioning grooves 310 are arranged at intervals along the direction in which the partition bars 121 are arranged. In order to prevent the partition bars 121 from electrically contacting the battery cell units 110 , the battery cell frame 120 further includes a plurality of first insulating members 125 , each of which is connected to a corresponding partition bar 121 .

[0061] Based on the above content, combined with Figure 4-Figure 6 , multiple first insulating members 125 are matched with multiple positioning grooves 310 one by one, and each first insulating member 125 is matched with one positioning groove 310. Therefore, during the assembly process, the first insulating member 125 is connected to the partition bar 121, the position of the first insulating member 125 is determined, and the insulating plate 300 is positioned through the cooperation between the first insulating member 125 and the positioning groove 310, and its specific position during assembly is determined, thereby completing the assembly of the end plate 200 and the battery cell unit 110, improving the assembly accuracy, avoiding assembly misalignment, and causing repeated assembly, and improving assembly efficiency.

[0062] For further information, please refer to Figure 1-Figure 9 In order to place the liquid cooling tube and cool the battery module 400 through the liquid cooling tube, the battery rack 120 also includes a plurality of liquid cooling plates 123, and the liquid cooling plates 123 are spaced apart from the battery unit 110 to provide reserved space for the placement of the liquid cooling tube. Both ends of each liquid cooling plate 123 are respectively connected to two connecting side plates 122, and the liquid cooling plate 123 and the partition bar 121 are located on the same side of the battery unit 110, so that the structure of the liquid cooling plate 123 is more stable. At the same time, the plurality of liquid cooling plates 123 are arranged in parallel and at intervals along the arrangement direction of the partition bars 121, and each liquid cooling plate 123 corresponds to a column of batteries, that is, each liquid cooling plate 123 is located between two partition bars 121.

[0063] In the process of configuring the battery rack 120, since the battery cell unit 110 generates heat during operation, it is necessary to dissipate heat for it. The battery rack 120 includes a liquid cooling plate 123. Liquid cooling pipes are placed on the liquid cooling plate 123 to dissipate heat for the battery cell unit 110. There are multiple liquid cooling plates 123, which are arranged at intervals at the bottom of the battery cell unit 110 in parallel along the left and right directions shown in the figure, and the two ends of the liquid cooling plates 123 are respectively connected to the two connecting side plates 122 arranged on both sides of the battery cell unit 110.

[0064] Based on the above content, in order to ensure the cooling effect, each column of cells corresponds to a liquid cooling plate 123, so as to ensure that each column of cells can have a good cooling effect. Figure 4 As shown, the partition bars 121 and the liquid cooling plates 123 are arranged alternately, thereby ensuring the supporting and partitioning effect of the partition bars 121 and the cooling effect of the liquid cooling plates 123 without affecting each other.

[0065] Specifically, please refer to Figure 7 , Figure 7 For the utility model embodiment Figure 5 In the enlarged view at B, in order to prevent the liquid cooling plate 123 from making electrical contact with the battery cell unit 110, the battery cell frame 120 further includes a plurality of second insulating members 126, and a second insulating member 126 is disposed between each liquid cooling plate 123 and the corresponding column of battery cells.

[0066] Please combine Figure 4 and Figure 5 The insulating plate 300 is provided with a plurality of avoidance grooves 320 at intervals along the arrangement direction of the liquid cooling plate 123, and each avoidance groove 320 cooperates with at least one second insulating member 126. The avoidance grooves 320 are provided to provide a certain reserved space between the second insulating member 126 and the insulating plate 300, so that when the battery cell module 400 is in use, the insulating plate 300 and the second insulating member 126 will not be squeezed.

[0067] It can be understood that during the assembly process, according to the above content, the partition bars 121 and the liquid cooling plates 123 are arranged alternately, and the partition bars 121 and the liquid cooling plates 123 are both connected to the connecting side plates 122; then the first insulating member 125 and the second insulating member 126 are assembled, and the insulating plate 300 is further positioned by utilizing the matching relationship between the first insulating member 125 and the second insulating member 126 and the positioning groove 310 and the avoidance groove 320 respectively. After determining the predetermined assembly position, the assembly of the battery cell unit 110 and the end plate 200 is completed, thereby improving the accuracy of the assembly, avoiding assembly misalignment, resulting in repeated assembly, and improving the assembly efficiency.

[0068] For further information, please refer to Figure 1-Figure 9In order to further improve stability, the battery frame 120 further includes a plurality of connecting rods 124, and both ends of each connecting rod 124 are respectively connected to the two end plates 200. Figure 4 As shown, the connecting rod 124 is located on the side of the cell unit 110 away from the partition bar 121, and multiple connecting rods 124 are arranged in parallel and at intervals along the arrangement direction of the partition bar 121. A connecting rod 124 is configured on both sides of each column of cells, thereby further isolating two adjacent columns of cells.

[0069] In the process of configuring the battery rack 120, in order to improve its installation stability and structural strength, the battery rack 120 includes a connecting rod 124, which is arranged on the top of the battery unit 110 in parallel and at intervals along the left and right directions as shown in the figure, and is located on the opposite sides of the battery unit 110 with the partition bar 121.

[0070] According to the above content, a connecting rod 124 is configured on both sides of each column of battery cells, so the connecting rod 124 corresponds to the partition bar 121 one by one, further isolating the two adjacent columns of battery cell units 110 to avoid the risk of creepage. The two ends of the connecting rod 124 are respectively connected to the two end plates 200, increasing the fixing effect of the end plates 200, making the battery cell module 400 structure more stable.

[0071] Specifically, please refer to Figure 8 , Figure 8 For the utility model embodiment Figure 5 In the enlarged view at point C, in order to prevent the connecting rod 124 from making electrical contact with the battery cell, the battery cell frame 120 further includes a third insulating member 127 , and each third insulating member 127 is sleeved on a corresponding connecting rod 124 .

[0072] Please refer to Figure 4-Figure 8 , the insulating plate 300 is provided with a plurality of clearance grooves 330 at intervals along the arrangement direction of the connecting rods 124, and each clearance groove 330 cooperates with at least one third insulating member 127. Therefore, in the assembly process, in combination with the above content, the partition bars 121 and the liquid cooling plates 123 are arranged alternately, the partition bars 121 and the liquid cooling plates 123 are both connected to the connecting side plates 122, and the connecting rods 124 correspond to the partition bars 121 one by one; then the first insulating member 125, the second insulating member 126 and the third insulating member 127 are assembled, and the accuracy of positioning the insulating plate 300 is improved by using the matching relationship between the first insulating member 125, the second insulating member 126 and the third insulating member 127 and the positioning groove 310, the avoidance groove 320 and the clearance groove 330 respectively. After determining the predetermined assembly position, the assembly of the battery cell unit 110 and the end plate 200 is completed, thereby improving the assembly accuracy, avoiding assembly misalignment, resulting in repeated assembly, and improving assembly efficiency.

[0073] Specifically, please refer to Figure 1-Figure 9, in this embodiment, both ends of the connecting rod 124 are respectively connected to the two end plates 200 by bolts. In other embodiments, other connection methods can also be adopted, for example: welding. The embodiments of the present utility model do not limit this.

[0074] Further, please refer to Figure 3 , according to the positional relationship among the foregoing partition strip 121, liquid cooling plate 123 and connecting rod 124, in order to enable the positioning grooves 310, avoidance grooves 320 and relief grooves 330 to cooperate with the foregoing respective structures, a plurality of positioning grooves 310 correspond to a plurality of relief grooves 330 one by one, and each avoidance groove 320 is disposed between two adjacent positioning grooves 310.

[0075] Further, please refer to Figure 3 , to enhance the protection effect, a plurality of first protrusions 340 are arranged at intervals along the arrangement direction of the partition strip 121 on the insulating plate 300. Each relief groove 330 is located between two first protrusions 340, and the two first protrusions 340 are respectively located on both sides of the connecting rod 124 corresponding to the relief groove 330. By providing the first protrusions 340, the position of the connecting rod 124 is further restricted, and the safety protection effect of the insulating plate 300 is increased. When assembling the battery cell module 400, the fixing effect on the connecting rod 124 is increased by the first protrusions 340, and at the same time, the relative position between the connecting rod 124 and the insulating plate 300 is further confirmed to ensure that the assembly is not misaligned, which is convenient for subsequent assembly and improves the assembly accuracy.

[0076] Further, please refer to Figure 6 , to improve the insulation effect, the first insulating member 125 includes a first insulating portion 129 and two second insulating portions 131.

[0077] Specifically, the partition strip 121 in this embodiment is in a "ji" shape, having a second protrusion 128 and two horizontal structures. Among them, the second protrusion 128 is used to partition two adjacent columns of battery cells; and the two horizontal structures are respectively located on both sides of the second protrusion 128 and are both connected to the second protrusion 128 for supporting the battery cells. The first insulating portion 129 is sleeved on the second protrusion 128, and the second insulating portion 131 is located between the horizontal structure and the battery cell, that is, the two second insulating portions 131 are respectively located on both sides of the second protrusion 128 and are connected to the partition strip 121. Among them, the first insulating portion 129 cooperates with the positioning groove 310, that is, during the assembly process, the predetermined position of the insulating plate 300 is determined by the cooperation between the first insulating portion 129 and the positioning groove 310, and the relative position relationship between the partition strip 121 and the insulating plate 300 is indirectly determined by the relative position relationship between the first insulating portion 129 and the second protrusion 128, thereby limiting the insulating plate 300 to facilitate the subsequent assembly.

[0078] According to the above content, the insulating plate 300 is accurately positioned by the cooperation between the positioning groove 310 on the insulating plate 300 and the first insulating portion 129, thereby improving the assembly accuracy, avoiding repeated installation, and improving the assembly efficiency.

[0079] For further information, please refer to Fig. 9 , Fig. 9 The schematic diagram of the structure of the end plate 200 provided in the embodiment of the utility model, the end plate 200 is provided with a plurality of grooves 210 along the arrangement direction of the partition bars 121, and each groove 210 cooperates with at least one partition bar 121, so as to avoid mutual interference between the end plate 200 due to the connection between the partition bar 121 and the connecting side plate 122. By providing the grooves 210, when the end plate 200 is assembled, the bottom of the end plate 200 will not abut against the partition bar 121, so that the end plate 200 can be smoothly connected to the connecting side plate 122.

[0080] Specifically, please refer to Figure 4 In the present embodiment, bolts are used to connect the two ends of the connecting rod 124 to the two end plates 200 respectively. In other embodiments, other connection methods may be used, such as welding, which is not limited in the present embodiment of the utility model.

[0081] The following is the installation process of the battery cell module 400 provided in this embodiment:

[0082] After the cell frame 120 is installed in sequence according to the arrangement that the partition bar 121 and the liquid cooling plate 123 are located on the same side of the cell unit 110 and are arranged alternately, and both ends of the partition bar 121 and the liquid cooling plate 123 are respectively connected to the connecting side plates 122 arranged on both sides of the cell unit 110, the assembly position of the insulating plate 300 is determined through the self-positioning of the positioning groove 310 and the avoidance groove 320 on the insulating plate 300, and the special pre-positioning is done. Then the cell unit 110 is installed, and then the connecting rod 124 is assembled on the shoulder of the cell. The connecting rod 124 corresponds to the partition bar 121 one by one. Through its cooperation with the avoidance groove 330, the assembly position is further confirmed. After confirmation, the end plate 200 is assembled, and the connecting rod 124 and the connecting side plate 122 are connected to the end plate 200 to complete the assembly of the cell module 400.

[0083] Through the above operation, during the module assembly process, by setting the positioning groove 310 on the insulating plate 300, the insulating plate 300 can achieve self-positioning during the installation process through the cooperation of the positioning groove 310 and the battery frame 120, and then when assembling the battery pack 100 and the end plate 200, their positions are limited to avoid repeated reassembly caused by assembly dislocation, and the positioning is more accurate, thereby improving the assembly accuracy and assembly efficiency of the battery module 400. Moreover, on this basis, the avoidance groove 320 and the giving way groove 330 are set to further limit the position of the insulating plate 300 to ensure the accuracy of assembly.

[0084] At the same time, the utility model can directly install the insulating plate 300 between the battery cell and the end plate 200 by positioning the insulating plate 300 and connecting the battery cell frame 120 with the end plate 200. Compared with the pasting method in the prior art, the assembly is more convenient and simple.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery cell module, characterized in that: include: A battery pack, the battery pack comprising a battery cell unit and a battery cell frame, the battery cell unit being connected to the battery cell frame; Two end plates, both of which are connected to the battery frame and are located on both sides of the battery unit; as well as Two insulating plates, the two insulating plates correspond to the two end plates respectively, and each of the insulating plates is located between the corresponding end plate and the battery cell unit; each of the insulating plates is attached to the battery cell unit and the corresponding end plate; each of the insulating plates is provided with at least one positioning groove, and the positioning groove cooperates with the battery cell frame.

2. The battery cell module according to claim 1, characterized in that: The battery cell frame includes two connecting side plates and a plurality of partition bars, wherein the plurality of partition bars are arranged in parallel and at intervals, and both ends of each partition bar are respectively connected to the two connecting side plates, and the two connecting side plates are respectively located on both sides of the battery cell unit, and each end plate is connected to the connecting side plate on the same side; The battery cell unit includes a plurality of battery cells, and the plurality of battery cells are arranged in a plurality of rows along the arrangement direction of the partition bars, and at least one partition bar is arranged on both sides of each row of battery cells.

3. The battery cell module according to claim 2, characterized in that: A plurality of the positioning grooves are arranged at intervals along the arrangement direction of the partition bars; The cell frame further includes a plurality of first insulating members, each of which is connected to a corresponding partition bar, and each of which is matched with a positioning groove.

4. The battery cell module according to claim 3, characterized in that: The battery cell frame also includes a plurality of liquid cooling plates and a plurality of second insulating members; Both ends of each of the liquid cooling plates are respectively connected to the two connecting side plates, and the liquid cooling plate and the partition bar are located on the same side of the battery cell unit; a plurality of the liquid cooling plates are arranged in parallel and at intervals along the arrangement direction of the partition bar; each of the liquid cooling plates corresponds to a column of the battery cells, and the second insulating member is arranged between each of the liquid cooling plates and the battery cells in the corresponding column; The insulating plate is provided with a plurality of avoidance grooves at intervals along the arrangement direction of the liquid cooling plates; each of the avoidance grooves is matched with at least one of the second insulating members.

5. The battery cell module according to claim 4, characterized in that: The battery cell frame further includes a plurality of connecting rods and a plurality of third insulating members; Both ends of each connecting rod are respectively connected to the two end plates, and the connecting rod is located on the side of the battery cell unit away from the partition bar; a plurality of connecting rods are arranged in parallel and at intervals along the arrangement direction of the partition bar, and a connecting rod is arranged on both sides of each column of battery cells; each third insulating member is sleeved on the corresponding connecting rod; The insulating plate is provided with a plurality of clearance grooves at intervals along the arrangement direction of the connecting rods; each of the clearance grooves is matched with at least one of the third insulating members.

6. The battery cell module according to claim 5, characterized in that: The plurality of positioning grooves correspond to the plurality of avoidance grooves one by one; each of the avoidance grooves is arranged between two adjacent positioning grooves.

7. The battery cell module according to claim 5, characterized in that: The insulating plate is provided with a plurality of first protrusions at intervals along the arrangement direction of the partition bars, each of the clearance grooves is located between two of the first protrusions, and the two first protrusions are respectively located on both sides of the connecting rod corresponding to the clearance groove.

8. The battery cell module according to claim 5, characterized in that: The first insulating member includes a first insulating portion and two second insulating portions; The partition bar is provided with a second protruding portion, and the first insulating portion is sleeved on the second protruding portion; two second insulating portions are respectively located on both sides of the second protruding portion and connected to the partition bar.

9. The battery cell module according to claim 5, characterized in that: The end plate is provided with a plurality of grooves along the arrangement direction of the partition bars, and each of the grooves is matched with at least one of the partition bars.

10. A battery pack, characterized in that: It comprises a shell and a battery cell module as described in any one of claims 1 to 9, wherein the shell is connected to the battery cell module.

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