Battery frames, battery cells, battery assemblies, battery modules and batteries

Abstract

The present invention relates to the field of battery technology, and proposes a battery frame, a battery cell, a battery assembly, a battery module, and a battery. The battery frame includes a first bracket, a second bracket, and a heat sink. The second bracket is separately provided with the first bracket to form an installation space; the heat sink is installed in the installation space formed between the first bracket and the second bracket through a limiting snap-fit ​​structure. The battery frame provided by the present invention adopts a first bracket and a second bracket that are separately provided, and installs the heat sink in the installation space formed between the first bracket and the second bracket through a limiting snap-fit ​​structure. This can reduce the size and weight of the first bracket and the second bracket, while increasing the heat dissipation area of ​​the heat sink and enhancing the heat dissipation performance of the battery frame.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a battery frame, a battery cell, a battery assembly, a battery module and a battery. Background Art

[0002] In related technologies, soft-pack batteries use aluminum-plastic film as their outer shell and omit many structural components. As a result, the soft-pack batteries themselves have poor strength and rigidity. Furthermore, since they lack structural components for heat conduction, the battery's heat dissipation performance is poor. Soft-pack batteries are typically secured within a battery frame to secure, protect, and dissipate heat.

[0003] However, existing battery frames are integral plastic frames with an aluminum heat sink embedded within the frame to dissipate heat from the battery. The main problem with this type of battery frame is that the plastic components are large and heavy, while the aluminum heat sink is small and has poor heat dissipation performance. Summary of the Invention

[0004] The present invention provides a battery frame, a battery cell, a battery assembly, a battery module and a battery, so as to optimize the structure of the battery frame and improve the heat dissipation performance of the battery frame.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] According to a first aspect of the present invention, there is provided a battery frame, comprising:

[0007] First bracket;

[0008] a second bracket, the second bracket being separately provided with the first bracket to form an installation space;

[0009] A heat dissipation plate is installed in the installation space formed between the first bracket and the second bracket through a limiting clamping structure.

[0010] The battery frame provided by the present invention adopts a first bracket and a second bracket that are separately arranged, and installs the heat sink in the installation space formed between the first bracket and the second bracket through a limiting clamping structure. This can reduce the size and weight of the first bracket and the second bracket, while increasing the heat dissipation area of ​​the heat sink and enhancing the heat dissipation performance of the battery frame.

[0011] According to a second aspect of the present invention, a battery unit is provided, comprising a single battery and the battery frame, wherein the single battery is fixedly installed in the battery frame, and a large surface of the single battery is in contact with the heat dissipation plate.

[0012] The battery unit provided by the present invention increases the contact area between the single battery and the heat sink, enhances the heat conduction between the single battery and the heat sink, improves the heat dissipation effect of the single battery, and is conducive to achieving lightweight battery units.

[0013] According to a third aspect of the present invention, a battery assembly is provided, comprising a heating film and two battery cells, wherein the heating film is located between the two battery cells, and the large surfaces of the two battery cells are in contact with two surfaces of the heating film respectively.

[0014] The battery assembly provided by the present invention, by utilizing the battery cells provided by the present invention, can achieve rapid heating and cooling of the battery, allowing for effective regulation of battery temperature based on operating conditions, thereby improving the battery's service life and safety. Furthermore, the placement of the heating film between the two battery cells can reduce the heat conduction path and heat loss, thereby increasing the total heating power.

[0015] According to a fourth aspect of the present invention, a battery module is provided, comprising a first battery cell, a last battery cell and at least one battery assembly as described above, wherein the battery assembly is located between the first battery cell and the last battery cell, wherein the first battery cell and the last battery cell are both the battery cells as described above.

[0016] The battery module provided by the present invention enables rapid heating and cooling of the battery, allowing for effective regulation of battery temperature based on operating conditions, thereby improving the battery module's service life and safety. Furthermore, due to the small size and weight of the first and second brackets, the overall weight of the battery module is reduced, thereby increasing the module's energy density.

[0017] According to a fifth aspect of the present invention, a battery is provided, comprising the battery module.

[0018] The battery provided by the present invention has a smaller overall weight and higher safety performance and energy density due to the use of the battery module provided by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For a better understanding of the present application, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present application. In addition, related elements or components may have different arrangements as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each figure. Among them:

[0020] Figure 1 A schematic diagram of the structure of the battery frame provided in this embodiment;

[0021] Figure 2 A schematic structural diagram of the battery frame provided in this embodiment from another perspective;

[0022] Figure 3 An exploded view of the battery frame provided for this embodiment;

[0023] Figure 4 A cross-sectional view of a battery frame provided in this embodiment;

[0024] Figure 5 A schematic structural diagram of the first bracket in the battery frame provided in this embodiment;

[0025] Figure 6 A schematic structural diagram of the first bracket in the battery frame provided in this embodiment from another perspective;

[0026] Figure 7 A schematic structural diagram of the second bracket in the battery frame provided in this embodiment;

[0027] Figure 8 A schematic structural diagram of a battery unit provided in this embodiment;

[0028] Figure 9 An exploded view of the battery unit provided in this embodiment;

[0029] Figure 10 A schematic structural diagram of a conductive member in a battery cell provided in this embodiment;

[0030] Figure 11 A schematic diagram of the structure of the single battery, the conductive member and the busbar in the battery unit provided in this embodiment;

[0031] Figure 12 An exploded view of the battery assembly provided in this embodiment;

[0032] Figure 13 A schematic diagram of the structure of the heating film and the battery unit in the battery assembly provided in this embodiment;

[0033] Figure 14 A schematic structural diagram of the battery module provided in this embodiment;

[0034] Figure 15 A schematic structural diagram of the battery module provided in this embodiment from another perspective;

[0035] Figure 16 An exploded view of the battery module provided in this embodiment;

[0036] Figure 17 is an exploded view of the first bracket and the line card in this embodiment;

[0037] Figure 18 is a schematic diagram of the first bracket and the line card matching in this embodiment;

[0038] Figure 19A The position relationship between the temperature sensor and the single battery in this embodiment is shown in FIG. Figure 1 ;

[0039] Figure 19B The position relationship between the temperature sensor and the single battery in this embodiment is shown in FIG. Figure 2 ;

[0040] Figure 19C The position relationship between the temperature sensor and the single battery in this embodiment is shown in FIG. Figure 3 .

[0041] The following are the descriptions of the reference numerals:

[0042] 1-battery frame; 11-first bracket; 111-first clamping portion; 111a-positioning surface; 112-horizontal plate; 113-first vertical plate; 113a-positioning edge; 114-second vertical plate; 1141-positioning boss; 1142-first sub-positioning plate; 1142a-first positioning surface; 1143-second sub-positioning plate; 1143a-second positioning surface; 115-third vertical plate; 116-side plate; 1161-clamping convexity; 117-connecting portion; 1171-protruding portion; 118-wire outlet hole; 119-wiring harness slot; 12-second bracket; 121-second clamping portion; 122-support plate; 123-positioning slot; 124-tie hole; 13- Heat sink; 131-first snap-fitting part; 132-main heat sink; 133-first side heat conducting plate; 134-second side heat conducting plate; 135-second snap-fitting part; 2a-first battery cell; 2b-last battery cell; 21-single battery cell; 211-large surface; 212-first pole ear; 213-second pole ear; 3-conductive member; 31-first connecting plate; 32-second connecting plate; 4a-heating film; 4b-auxiliary heating film; 41-outlet terminal; 411-vertical part; 412-horizontal part; 42-power supply interface; 5-end plate; 6-insulating plate; 7-temperature sensor; 8-module acquisition harness connector; 9-line card; 91-hook; 10-bus. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the example embodiments of the present application to clearly and completely describe the technical solutions in the example embodiments of the present application. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of the present application. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the present application.

[0044] In the description of this application, unless otherwise expressly specified or limited, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more; and the term "and / or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the / the" object or "an" object is also intended to mean one of a possible plurality of such objects.

[0045] Unless otherwise specified or explained, the terms "connect," "fixed," etc. should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0046] Furthermore, in the description of the present application, it should be understood that the directional words such as “upper”, “lower”, “inner” and “outer” described in the example embodiments of the present application are described from the perspectives shown in the accompanying drawings and should not be understood as limiting the example embodiments of the present application. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) “upper”, “lower”, or “inner” or “outer”, it can not only be directly connected to the other (one or more) elements “upper”, “lower” or “inner” or “outer”, but can also be indirectly connected to the other (one or more) elements “upper”, “lower” or “inner” or “outer” through an intermediate element.

[0047] In a first aspect, this embodiment provides a battery frame 1. Figures 1 to 7 As shown, the battery frame 1 provided in this embodiment includes a first bracket 11, a second bracket 12 and a heat sink 13. The second bracket 12 and the first bracket 11 are separately arranged to form an installation space for installing the heat sink; the heat sink 13 is installed in the installation space formed between the first bracket 11 and the second bracket 12 through a limiting snap-fit ​​structure.

[0048] The battery frame 1 provided in this embodiment adopts a first bracket 11 and a second bracket 12 that are separately arranged, and installs the heat sink 13 in the installation space formed between the first bracket 11 and the second bracket 12 through a limiting snap-fit ​​structure. This can reduce the size and weight of the first bracket 11 and the second bracket 12, while increasing the heat dissipation area of ​​the heat sink 13 and enhancing the heat dissipation performance of the battery frame 1.

[0049] In addition, the heat sink 13 occupies almost the entire installation space, that is, the heat sink 13 occupies the entire middle area of ​​the battery frame 1, and most of the area of ​​the heat sink 13 is not covered by the first bracket 11 and the second bracket 12, so that the heat dissipation area of ​​the heat sink 13 is maximized, that is, the heat sink can fully contact with the single battery, thereby improving the thermal conductivity of the heat sink.

[0050] In this embodiment, the first bracket 11 and the second bracket 12 are both made of plastic. Since the first bracket 11 and the second bracket 12 are small in size and weight, the difficulty and cost of injection molding are reduced.

[0051] In one embodiment, see Figure 3 、 Figure 5 and Figure 6 As shown, the limiting clamping structure includes a first clamping portion 111 and a first clamping fitting portion 131. The first clamping portion 111 is arranged on the first bracket 11, and the first clamping fitting portion 131 is arranged on the heat dissipation plate 13. The first clamping portion 111 is clamped with the first clamping fitting portion 131 to fix the first bracket 11 to the heat dissipation plate 13.

[0052] For example, see Figure 3 、 Figure 5 and Figure 6 As shown, the first bracket 11 includes an elongated plate structure, which includes a horizontal plate 112, a first vertical plate 113, and a second vertical plate 114. The first vertical plate 113 and the second vertical plate 114 are both fixedly connected to the horizontal plate 112, and the first vertical plate 113 and the second vertical plate 114 are arranged in parallel and spaced apart. The first clamping portion 111 is fixedly connected to the first vertical plate 113 and is located between the first vertical plate 113 and the second vertical plate 114.

[0053] See also Figure 1 As shown, connecting portions 117 are provided at both ends of the long strip plate structure. The connecting portions 117 are provided with channels for fasteners to pass through so as to fix the plurality of first brackets 11 together.

[0054] For example, the horizontal plate 112, the first vertical plate and the second vertical plate are integrally formed, and the connecting portion 117 is integrally formed with the long strip plate structure. This method is not only convenient for production and processing, but also can improve the overall structural strength of the first bracket 11, thereby ensuring that the heat dissipation plate 13 can be firmly fixed.

[0055] In one embodiment, see Figure 1 As shown, a protrusion 1171 is provided on one side of the connecting portion 117 . Among two adjacent first brackets 11 , the protrusion 1171 of one first bracket 11 can be confined within the channel of the connecting portion 117 of the other first bracket 11 .

[0056] Exemplarily, when there are multiple battery frames 1, fasteners such as bolts and nuts are used to securely connect the multiple battery frames 1 together. The protrusion 1171 is annular or open annular. Exemplarily, the protrusion 1171 can be a hollow cylindrical structure, the inner cavity of the hollow cylindrical structure is connected to the channel. Of course, the protrusion 1171 can also be a hollow prismatic structure. Exemplarily, a long bolt is used to pass through the channel of the connecting portion 117 on each first bracket 11, and then cooperate with a nut to securely connect all the first brackets 11 together, thereby securely connecting all the battery frames 1 together.

[0057] In this embodiment, the first clamping portion 111 and the first bracket 11 are integrally formed.

[0058] In one embodiment, the first clamping portion 111 is a limiting boss, the first clamping fitting portion 131 is a limiting hole, and the limiting boss is limited to the limiting hole.

[0059] For example, see Figure 3 and Figure 6 As shown, there are two first clamping portions 111 , which are spaced apart along the length of the first vertical plate 113 . Accordingly, there are also two first clamping fitting portions 131 , which correspond to the two first clamping portions 111 , respectively.

[0060] In order to facilitate observation and installation, an opening is provided at a position of the second vertical plate 114 corresponding to the first clamping portion 111 , so as to facilitate observation of whether the heat dissipation plate 13 is installed in place.

[0061] It should be noted that the first clamping portion 111 may also be a limiting hole, and correspondingly, the first clamping fitting portion 131 is a limiting boss.

[0062] In this embodiment, see Figure 3 and Figure 7 As shown, the limiting clamping structure also includes a second clamping portion 121 and a second clamping fitting portion 135. The second clamping portion 121 is arranged on the second bracket 12, and the second clamping fitting portion 135 is arranged on the heat dissipation plate 13. The second clamping portion 121 is clamped with the second clamping fitting portion 135 to fix the second bracket 12 to the heat dissipation plate 13.

[0063] The structure of the second bracket 12 is substantially the same as that of the first bracket 11 , and also includes a long strip-shaped plate structure and a connecting portion 117 ; the second clamping portion 121 is also a limiting boss, and the second clamping fitting portion 135 is also a limiting hole.

[0064] After assembly is completed, the first clamping portion 111 is located at the first clamping fitting portion 131 , and the second clamping portion 121 is located at the second clamping fitting portion 135 .

[0065] In one embodiment, see Figure 4 As shown, the limiting boss has a positioning surface 111 a , which abuts against the hole wall of the limiting hole to limit the heat dissipation plate 13 from moving between the first bracket 11 and the second bracket 12 .

[0066] Taking the first clamping portion 111 as an example, see Figure 4 As shown, the limiting boss has a positioning surface 111a, which faces the transverse plate 112. For example, the limiting hole is rectangular in shape, and the positioning surface 111a abuts against the hole wall of the limiting hole close to the transverse plate 112.

[0067] Correspondingly, the positioning surface 111 a of the limiting boss on the second bracket 12 faces the transverse plate 112 of the second bracket 12 .

[0068] See also Figure 6 As shown, the arrow direction X indicates a first direction, which is perpendicular to the length direction of the first bracket 11 and the second bracket 12 and parallel to the surface of the heat sink 13. The positioning surfaces of the limiting bosses on the first bracket 11 and the second bracket 12 simultaneously position the heat sink 13, thereby limiting the movement of the heat sink 13 between the first bracket 11 and the second bracket 12, that is, preventing the heat sink 13 from moving in the first direction.

[0069] In one embodiment, the first bracket 11 is provided with a positioning structure for positioning the heat sink 13 to prevent the heat sink 13 from loosening or falling off. When the single battery is fixedly mounted on the battery frame 1, the position of the single battery is ensured to be fixed, thereby ensuring the safety of the battery module.

[0070] In one embodiment, the positioning structure includes a positioning boss 1141 and a first positioning plate, both of which are arranged on the first bracket 11, and the minimum distance between the positioning boss 1141 and the surface of the first positioning plate close to the positioning boss 1141 is adapted to the thickness of the heat sink 13.

[0071] The first positioning plate is integrally formed with the first vertical plate 113 . To facilitate description of the technical solution of this embodiment, the first vertical plate 113 is referred to as the first positioning plate. It should be understood that the first positioning plate may also be a part of the first vertical plate 113 .

[0072] See also Figure 6As shown, arrow direction Y indicates the second direction. A positioning boss 1141 is provided on the surface of the second vertical plate 114 facing the first vertical plate 113. Exemplarily, the positioning boss 1141 is integrally formed with the second vertical plate 114. The minimum distance between the positioning boss 1141 and the surface of the first vertical plate 113 proximate to the positioning boss 1141 is adapted to the thickness of the heat sink 13. When the first engaging portion 111 is restrained within the first engaging portion 131, the positioning boss 1141 and the first vertical plate 113 can clamp and secure the heat sink 13, preventing the heat sink 13 from moving in the second direction, wherein the second direction is perpendicular to the surface of the first vertical plate 113.

[0073] Exemplarily, the number of the positioning bosses 1141 is four, and the four positioning bosses are spaced apart along the length direction of the second vertical plate.

[0074] In one embodiment, see Figure 6 As shown, arrow direction Z indicates a third direction, i.e., a set direction. The positioning structure further includes a second positioning plate, which abuts against a portion of the surface of the heat sink 13 to limit the movement of the heat sink 13 along the set direction, wherein the set direction is parallel to the length direction of the first bracket 11.

[0075] For example, see Figure 6 As shown, the second positioning plate includes a first sub-positioning plate 1142 and a second sub-positioning plate 1143, and the first sub-positioning plate 1142 and the second sub-positioning plate 1143 are arranged opposite to each other along the length direction of the first bracket 11; see Figure 3 As shown, the heat dissipation plate 13 includes a main heat dissipation plate 132, a first side heat dissipation plate 133 and a second side heat dissipation plate 134. The first side heat dissipation plate 133 and the second side heat dissipation plate 134 are relatively arranged at both ends of the heat dissipation plate 13 along the third direction. The first side heat dissipation plate 133 abuts against the surface of the first sub-positioning plate 1142 away from the second sub-positioning plate 1143, and the second side heat dissipation plate 134 abuts against the surface of the second sub-positioning plate 1143 away from the first sub-positioning plate 1142.

[0076] Illustratively, the first sub-positioning plate 1142 is fixedly connected to one end of the second vertical plate 114 , the second sub-positioning plate 1143 is fixedly connected to the other end of the second vertical plate 114 , and the first sub-positioning plate 1142 is perpendicular to the second sub-positioning plate 1143 .

[0077] In this embodiment, the first sub-positioning plate 1142 , the second sub-positioning plate 1143 and the second vertical plate 114 are integrally formed.

[0078] In this embodiment, the first side heat conducting plate 133, the second side heat conducting plate 134, and the main heat conducting plate 132 are integrally formed. Exemplarily, the first side heat conducting plate 133 and the second side heat conducting plate 134 are located on the same side of the main heat conducting plate 132, and the first side heat conducting plate 133 and the second side heat conducting plate 134 are both perpendicular to the main heat conducting plate 132.

[0079] After the first bracket 11 and the heat sink 13 are assembled, the first sub-positioning plate 1142 and the second sub-positioning plate 1143 are both located between the first side heat conducting plate 133 and the second side heat conducting plate 134. The first side heat conducting plate 133 abuts against the surface of the first sub-positioning plate 1142 away from the second sub-positioning plate 1143, and the second side heat conducting plate 134 abuts against the surface of the second sub-positioning plate 1143 away from the first sub-positioning plate 1142, thereby limiting the movement of the heat sink 13 along the third direction.

[0080] It should be understood that the “movement along the first direction”, “movement along the second direction” and “movement along the third direction” mentioned in this embodiment include movement along the arrow directions X, Y and Z, and also include movement in the direction opposite to the arrow directions X, Y and Z.

[0081] In some embodiments, the second bracket 12 is also provided with a positioning structure, and the positioning structure is used to position the heat dissipation plate 13 .

[0082] It should be noted that the positioning structure provided on the second bracket 12 is substantially the same as the positioning structure provided on the first bracket 11 , and will not be described in detail herein.

[0083] In one embodiment, the first bracket 11 is provided with a first positioning portion, and the second bracket 12 is provided with a second positioning portion and a third positioning portion. The first positioning portion and the second positioning portion are used to position the side of the single battery, and the third positioning portion is used to position the bottom of the single battery.

[0084] Through the joint action of the first positioning portion, the second positioning portion and the third positioning portion, the side and bottom edges of the single cell can be positioned simultaneously to fix the single cell in the correct position, thereby facilitating the determination of the position of the tab of the single cell, so as to facilitate the subsequent welding and fixation of the tab and the busbar.

[0085] In one embodiment, the first positioning portion includes a first positioning surface 1142a and a second positioning surface 1143a, and the first positioning surface 1142a and the second positioning surface 1143a are arranged opposite to each other along the length direction of the first bracket 11; the second positioning portion includes a third positioning surface and a fourth positioning surface, and the third positioning surface and the fourth positioning surface are arranged opposite to each other along the length direction of the second bracket 12; the third positioning portion includes a plurality of support plates 122, and the plurality of support plates 122 are arranged at intervals along the length direction of the second bracket 12.

[0086] For example, see Figure 1 and Figure 6 As shown, the first positioning surface 1142a is the surface of the first sub-positioning plate 1142 away from the first side heat conduction plate 133, and the second positioning surface 1143a is the surface of the second sub-positioning plate 1143 away from the second side heat conduction plate 134. The first positioning surface 1142a can abut against one side of the single cell, and the second positioning surface 1143a can abut against the other side of the single cell.

[0087] The structure of the second positioning portion is substantially the same as that of the first positioning portion, and will not be described in detail here.

[0088] In this embodiment, the first sub-positioning plate 1142 and the second sub-positioning plate 1143 cooperate with each other to position the heat sink 13 and the single battery, simplifying the structure of the first bracket 11 and the second bracket 12, further reducing weight and saving costs.

[0089] See also Figure 1 and Figure 7 As shown, multiple support plates 122 are arranged at intervals along the length direction of the transverse plate 112 of the second bracket 12. For example, the support plates 122 are perpendicular to the plate surface of the transverse plate 112 of the second bracket 12. The side surface of the support plate 122 away from the transverse plate 112 is named the first support surface, and the surface of the connecting portion 117 of the second bracket 12 close to the heat dissipation plate 13 is named the second support surface. The second support surface and the first support surface are in the same plane, and the bottom edge of the single battery is located above the multiple first support surfaces and the second support surfaces.

[0090] In a second aspect, this embodiment provides a battery unit. Figures 8 to 11 As shown, the battery unit includes a single battery 21 and a battery frame 1 provided in this embodiment. The single battery 21 is fixedly installed in the battery frame 1, and the large surface 211 of the single battery 21 contacts the heat sink 13. The large surface 211 of the single battery 21 refers to the surface with the largest area of ​​the battery.

[0091] The battery unit provided in this embodiment uses the battery frame provided in this embodiment, which increases the contact area between the single battery 21 and the heat sink 13, enhances the heat conduction between the single battery 21 and the heat sink 13, improves the heat dissipation effect of the single battery 21, and is conducive to achieving lightweight battery units.

[0092] In this embodiment, the single battery 21 is a soft-pack battery.

[0093] A single battery cell includes a cell and an electrolyte, which is housed within a battery casing. For soft-pack batteries, the casing is an aluminum-plastic film covering the outer surface of the cell. For example, the cell can be a laminated cell, comprising a first electrode sheet and a second electrode sheet stacked together, and a separator positioned between the first and second electrode sheets. The first and second electrode sheets have opposite polarities. When the first electrode sheet is a positive electrode, the second electrode sheet is a negative electrode. The polarities of the first and second electrode sheets are interchangeable.

[0094] Of course, the battery cell may also be a wound battery cell, that is, the first pole piece, the second pole piece, and the separator arranged between the first pole piece and the second pole piece are wound to obtain the wound battery cell.

[0095] In one embodiment, the single battery 21 is bonded and fixed to the battery frame 1. Specifically, the first bracket 11, the second bracket 12, the main heat dissipation plate 132, the first side heat dissipation plate 133, and the second side heat dissipation plate 134 together form a storage space. The single battery is located in the storage space, and the large surface 211 of the single battery contacts the main heat dissipation plate 132, thereby achieving heat conduction between the single battery and the heat dissipation plate 13.

[0096] Exemplarily, the large surface 211 of the single battery 21 is in indirect contact with the main heat-conducting plate 132 via thermally conductive adhesive.

[0097] In one embodiment, the battery cell further includes a conductive member 3 made of metal, such as aluminum. The conductive member 3 is fixedly mounted on the first bracket 11, and the tabs of the single battery are electrically connected to the conductive member 3 by laser welding.

[0098] In one embodiment, see Figure 10 As shown, the conductive member 3 includes a first connecting plate 31 and a second connecting plate 32. The plate surface of the first connecting plate 31 is perpendicular to the plate surface of the second connecting plate 32. The plate surface of the first connecting plate 31 is parallel to the extension direction of the pole ear of the single cell, so that the pole ear of the single cell can be attached to and welded to the plate surface of the first connecting plate 31. The second connecting plate 32 is fixedly installed on the first bracket 11 for fixed connection to the busbar.

[0099] In this embodiment, the extension direction of the tab refers to the direction of the surface of the tab from the end close to the battery housing to the end away from the battery housing. For example, see Figure 11As shown, the tabs include a first tab 212 and a second tab 213, with the first tab 212 and the second tab 213 extending in the same direction. Arrow M indicates the direction of extension of the tabs. The surface of the tabs is bonded and welded to the surface of the first connecting plate 31 proximal to the tabs. Because the tabs do not need to be bent, the tabs are easily flat, making weld defects such as cold solder joints and voids less likely to occur. Furthermore, by welding the tabs to the first connecting plate 31 and the busbar 10 to the second connecting plate 32, there is no need to provide slots in the busbar, ensuring a large flow area for the busbar, allowing high currents to flow through.

[0100] Since the surface of the first connecting plate 31 is parallel to the extension direction of the tab of the single cell, the tab can be attached and welded to the surface of the first connecting plate 31 without bending the tab, thereby avoiding the flatness error caused by the tab bending process, and further avoiding the problem of loose fit between the tab and the conductive member 3, thereby improving the welding quality. At the same time, since the tab bending process is omitted, the assembly efficiency is improved.

[0101] The first bracket 11 is provided with an installation position for installing the second connecting plate 32 .

[0102] There are two mounting positions, each of which corresponds to a conductive member 3. One conductive member 3 is used to connect to the first pole tab 212 of the single battery, and the other conductive member 3 is used to connect to the second pole tab 213 of the single battery, wherein the polarity of the first pole tab 212 is opposite to that of the second pole tab 213.

[0103] Exemplarily, the polarity of the first tab 212 is positive, and the polarity of the second tab 213 is negative. The first tab 212 and the second tab 213 are led out from the same side of the single battery, making it easier to connect the conductive member 3 to the tabs.

[0104] In this embodiment, the two mounting positions are spaced apart along the length direction of the first bracket 11, that is, the two mounting positions are spaced apart along the length direction of the transverse plate 112. Figure 6 and Figure 8 As shown, two side panels 116 are provided between the two ends of the horizontal panel 112, and a third vertical panel 115 is provided between the two side panels 116 and the connection portion 117 to which they are close. One of the side panels 116 and the connection portion 117 to which it is close, as well as the first vertical panel 113 and the third vertical panel 115 located between the side panel 116 and the connection portion 117 define an installation position, and the other side panel 116 and the connection portion 117 to which it is close, as well as the first vertical panel 113 and the third vertical panel 115 located between the other side panel 116 and the connection portion 117 define another installation position.

[0105] For example, the first connecting plate 31 and the second connecting plate 32 are integrally formed, which is not only convenient for processing but also can improve the structural strength of the conductive member.

[0106] The connection between the first connecting plate 31 and the second connecting plate 32 has a smooth transition, which can avoid stress concentration and reduce the risk of breakage of the conductive member.

[0107] Because the first bracket 11 is provided with a first positioning portion, and the second bracket 12 is provided with a second positioning portion and a third positioning portion, the first, second, and third positioning portions work together to simultaneously position the side and bottom edges of the single cell, thereby securing the single cell in the correct position. This facilitates determining the position of the single cell's tab, ensuring that when the second connecting plate 32 is fixedly installed in the mounting position of the first bracket 11, the first connecting plate 31 is aligned with the tab, facilitating welding. In this embodiment, the electrical connection between the tab, the conductive member 3, and the busbar 10 is achieved through laser welding.

[0108] In a third aspect, this embodiment provides a battery assembly. Figure 12 and Figure 13 As shown, the battery assembly provided by this embodiment includes a heating film 4a and two battery cells provided by this embodiment. The heating film 4a is located between the two battery cells, and the large surfaces of the two battery cells are in contact with two surfaces of the heating film 4a respectively.

[0109] It should be understood that the large surface of the battery unit contacts the heating film 4a, which may be the large surface 211 of the single battery 21 facing away from the main heating plate, or the surface of the main heating plate facing away from the single battery.

[0110] The battery assembly provided by this embodiment, due to the use of the battery cells provided by this embodiment, can achieve rapid heating and cooling of the battery, thereby effectively regulating the battery temperature according to the operating conditions, thereby improving the battery's service life and safety. Furthermore, the placement of the heating film 4a between the two battery cells can reduce the heat conduction path and heat loss, thereby increasing the total heating power.

[0111] Positioning the heating film 4a between the two battery cells enables efficient, high-power heating of both batteries simultaneously, significantly increasing the battery's heating temperature rise rate. During heating, very little heat is lost to the exterior of the battery module, improving the thermal efficiency of the heating film 4a. The heating film 4a contacts the large surface 211 of the individual battery cells, providing a large heating area. Given a constant power density, the total heated area is larger, resulting in greater heating power. This high heating system power and low dissipation result in a high heating rate.

[0112] The heating film 4a is arranged between two battery cells, and the heating film 4a is in contact with the large surface 211 of the single battery. The distance between the point on the single battery farthest from the heating film 4a and the heating film 4a is the thickness of the single battery. Compared with the solution of arranging the heating structure on the bottom or side of the single battery, the battery assembly provided by this embodiment has a shorter heat conduction path, higher heating efficiency, smaller temperature gradient, and higher temperature consistency.

[0113] It should be noted that the arrangement of the heating film is not limited to the above one. For example, a heating film can be set between every two single cells. In this case, the battery assembly includes two heating films and two single cells. The heating films and the single cells are arranged alternately, and the distance between the point on the single cell farthest from the heating film 4a and the heating film 4a is half the thickness of the single cell.

[0114] It should be noted that the structure of the heating film 4a is prior art and will not be described in detail here.

[0115] In this embodiment, the heating film 4a has two opposing surfaces, one of which is in direct contact with the large surface 211 of one single cell, and the other is in indirect contact with the large surface 211 of another single cell via the main heating plate 132. When the main heating plate is located between the heating film 4a and the single cell, the thickness of the main heating plate can be ignored.

[0116] It should be noted that the heating film 4 a is bonded to the large surface 211 of the single battery by means of heat-conducting adhesive.

[0117] In one embodiment, see Figure 12 As shown, an outlet terminal 41 is provided on one side of the heating film 4a close to the second bracket 12, and at least a part of the outlet terminal 41 is located on the side of the second bracket 12 away from the first bracket 11. The outlet terminal 41 is provided with a wire and a connector, which are used to realize the series and parallel connection of the heating films 4a in multiple battery assemblies.

[0118] When selecting a conductor, you can choose a conductor with a larger flow area. A conductor with a larger flow area has a stronger flow capacity. A conductor with a stronger flow capacity can provide a greater power input to the heating film 4a. Therefore, the power density of the heating film 4a can be designed to be higher, thereby improving the heating rate.

[0119] See also Figure 15 As shown, when there are multiple battery assemblies, the series and parallel connection between the heating films 4a in the multiple battery assemblies is realized by wires. After the heating films 4a in a single battery module are connected in series and parallel to form a heating system, two or more power supply interfaces 42 are reserved. The power supply interface 42 can be connected to the positive and negative poles of the entire battery system and powered by the battery system, or it can be connected to an external power supply and powered by an external power supply.

[0120] The heating system is powered by a battery system or an external power supply. When the power of the heating film 4a is inconsistent, it will not cause inconsistent discharge of different batteries, thereby ensuring that the charge of each battery in the battery system is consistent.

[0121] In one embodiment, see Figure 7 、 Figure 12 and Figure 13 As shown, the second bracket 12 is provided with a positioning edge 113a and a positioning groove 123; the outlet end 41 is bent to form a vertical portion 411 and a horizontal portion 412, the vertical portion 411 and the heating film 4a are in the same plane, the horizontal portion 412 is located on the side of the second bracket 12 away from the first bracket 11, and the vertical portion 411 and the side edge of the heating film 4a close to the second bracket 12 form an avoidance space, the positioning edge 113a is located in the avoidance space, and the vertical portion 411 is located in the positioning groove 123.

[0122] In this embodiment, the positioning edge 113a is part of the first vertical plate 113 of the second bracket 12. There are two outlet terminals 41, spaced apart along the width of the heating film 4a. The width of the heating film 4a aligns with the length of the second bracket 12. The two vertical portions 411 form a clearance space with one side of the heating film 4a near the second bracket 12, and the positioning edge 113a is located within the clearance space. There are two positioning slots 123, each provided on the first vertical plate 113 of the second bracket 12. The vertical portions 411 are located within the positioning slots 123.

[0123] In this embodiment, the outlet terminal 41 and the heating film 4a are integrally formed.

[0124] In one embodiment, see Figure 7 As shown, the second bracket 12 is provided with a tie hole 124, and the connector is fixed by a tie. Exemplarily, the connector is fixed to the side of the second bracket 12 away from the single battery by the tie.

[0125] In a fourth aspect, this embodiment provides a battery module. Figures 14 to 19C As shown, the battery module provided by this embodiment includes a first battery cell 2a, a last battery cell 2b and at least one battery assembly provided by this embodiment, and the battery assembly is located between the first battery cell 2a and the last battery cell 2b, wherein the first battery cell 2a and the last battery cell 2b are both battery cells provided by this embodiment.

[0126] The battery module provided in this embodiment can achieve rapid heating and cooling of the battery, allowing for effective regulation of battery temperature based on operating conditions, thereby improving the battery module's service life and safety. Furthermore, due to the relatively small size and weight of the first bracket 11 and the second bracket 12, the overall weight of the battery module is reduced, thereby increasing the battery module's energy density.

[0127] See also Figure 14 and Figure 16 As shown, the battery module also includes an end plate 5 and an insulating plate 6. The four corners of the end plate 5 are provided with through holes, which are aligned with and connected to the channels on the first bracket 11 and the second bracket 12. The end plate 5 and the insulating plate 6 are both provided on the outside of the first battery cell 2a and the last battery cell 2b. The end plate 5 is located on the outside of the insulating plate 6, that is, the end plate 5 is located on the side of the insulating plate 6 away from the battery assembly. In other words, the first battery cell 2a, the last battery cell 2b and at least one battery assembly are all located between the two insulating plates 6, see Figure 16 As shown, the arrow direction N in the figure is the thickness direction of the battery. The battery module includes an end plate 5, an insulating plate 6, a first battery cell 2a, at least one battery assembly, a last battery cell 2b, an insulating plate 6, and an end plate 5 stacked along the thickness direction of the single battery. After stacking into a group, long bolts and nuts are used to fix them.

[0128] Exemplarily, the number of battery assemblies in this embodiment is seven.

[0129] The battery module also includes a busbar 10, mounted on top of the battery frame 1. Specifically, the busbar is welded to the surface of the second connecting plate 32 of the conductive member 3, away from the first bracket 11, to achieve series and parallel connection of the batteries. The voltage collection terminals on the module's collection harness are welded to the busbar to enable voltage collection.

[0130] Since the batteries at the ends dissipate heat faster, the temperatures at both ends of the battery module are lower. In order to ensure that the batteries have high temperature consistency, the battery module also includes two auxiliary heating films 4b; one of the auxiliary heating films 4b is located on the side of the first battery cell 2a away from the battery assembly, and the other auxiliary heating film 4b is located on the side of the last battery cell 2b away from the battery assembly.

[0131] The auxiliary heating film 4b is located on the side of the insulating plate 6 away from the end plate 5. Taking the first battery cell 2a as an example, the auxiliary heating film 4b contacts the large surface 211 of the battery in the first battery cell 2a. The distance between the point on the single battery cell farthest from the auxiliary heating film 4b and the auxiliary heating film 4b is the thickness of the single battery cell. As mentioned earlier, for the battery assembly, the distance between the point on the single battery cell farthest from the heating film 4a and the heating film 4a is also the thickness of the single battery cell. Therefore, the temperature gradient within the entire battery module is smaller and the temperature consistency is higher.

[0132] In this embodiment, the structure of the auxiliary heating film 4b is the same as that of the heating film 4a.

[0133] In one embodiment, see Figure 15 and Figure 16 As shown, the outlet end 41 of the auxiliary heating film 4b has a power supply interface 42, which is used to connect to an external power source, or the power supply interface 42 is used to connect to the positive and negative poles of the battery system.

[0134] The outlet end 41 of the auxiliary heating film 4b is also provided with a wire and a connector.

[0135] Exemplarily, the auxiliary heating film 4b has two output terminals 41, one of which is connected to the output terminal 41 of the adjacent heating film 4a through a wire and a connector, and the connector of the other output terminal 41 serves as a power supply interface 42. The power supply interface 42 can be connected to the positive and negative poles of the entire battery system and powered by the battery system, or it can be connected to an external power supply and powered by an external power supply.

[0136] Since the battery system or external power supply is used for power supply, when the power of the heating film 4a and the auxiliary heating film 4b is inconsistent, it will not cause inconsistent discharge of different batteries, thereby ensuring that the charge of each battery in the battery system is consistent.

[0137] Battery system performance is sensitive to temperature fluctuations. Prolonged exposure to high and low temperatures, as well as the accumulation of system temperature differences, can affect battery life and performance, potentially leading to safety issues. Accurate and reliable battery temperature acquisition is fundamental to the operation of thermal management systems.

[0138] Therefore, in this embodiment, see Figure 16 As shown, the battery module further includes a temperature sensor 7, which is bonded to the surface of the battery by a thermally conductive adhesive. This allows for direct measurement of the battery temperature, with a short temperature measurement delay and high measurement accuracy.

[0139] Arranging the temperature sensor 7 directly on the surface of the single battery can measure the actual temperature of the battery in real time and accurately, thereby improving the life and safety of the battery module.

[0140] In one embodiment, see Figure 6 As shown, the first bracket 11 is provided with a wire outlet hole 118 , and the wires of the temperature sensor 7 pass through the wire outlet hole 118 .

[0141] For example, the wire outlet hole 118 is provided in the middle of the transverse plate 112 and is a U-shaped notch. The wires of the temperature sensor 7 pass through the wire outlet hole 118 and the wire outlet hole 118 can guide the wires of the temperature sensor 7.

[0142] In one embodiment, the temperature sensor 7 is connected to the module acquisition harness via a connector to collect the battery temperature.

[0143] The temperature sensor 7 has a connector at the end of its wires, which connects it to the module data acquisition harness connector 8, transmitting the temperature signal to the battery system control unit. Temperature sensor 7 is directly bonded to the surface of the battery cell, improving temperature acquisition accuracy and timeliness, enabling accurate real-time battery temperature readings. This connector connects temperature sensor 7 to the module data acquisition harness, allowing assembly of temperature sensor 7 and the module data acquisition harness to occur in separate steps, reducing module assembly complexity and improving efficiency.

[0144] In one embodiment, see Figure 17 and Figure 18 As shown, the first bracket 11 is provided with a harness groove 119, and the module collection harness is installed in the harness groove 119. The groove wall of the harness groove 119 is provided with a clamping protrusion 1161; the battery module also includes a wire card 9, and the wire card 9 is provided with a hook 91. The hook 91 cooperates with the clamping protrusion 1161 to fix the wire card 9 in the notch of the harness groove.

[0145] For example, the first bracket 11 is provided with two mounting positions, and the portion between the two mounting positions forms a harness slot 119. Specifically, see Figure 17 As shown, the portion of the transverse plate 112 located between the two installation positions is the bottom of the wiring harness groove, the two side plates 116 are the two groove walls of the wiring harness groove, and the locking protrusion 1161 is provided on the surface of the side plate 116 away from the installation position.

[0146] Install the module collection harness in the harness slot, then place the wire clip 9 in the slot of the harness slot so that the hook 91 matches the protrusion 1161, thereby using the wire clip 9 to fix the module collection harness in the harness slot.

[0147] In one embodiment, there are multiple temperature sensors 7 , and the multiple temperature sensors 7 are respectively arranged at different positions of the battery.

[0148] The battery system includes multiple battery modules. When the battery system is working, the positions of different single cells in the battery module are different, which will lead to deviations in heat dissipation characteristics and ultimately lead to uneven temperature of the battery cells in the battery module. Therefore, multiple temperature sensors 7 are used and arranged at different positions of the battery. For example, see 19A to 19C As shown, the temperature sensors can be respectively arranged on the upper surface of the single cell close to the first bracket, the lower surface of the single cell close to the second bracket, and the side surface of the single cell between the upper surface and the lower surface.

[0149] Typically, temperature sensors 7 are placed at the highest and lowest temperature points within the battery module to capture the temperature range of the entire battery module. Based on the captured highest and lowest temperatures, and in conjunction with the operating conditions, the battery management system develops an appropriate control strategy (for example, ensuring the lowest temperature reaches the operating temperature during low-temperature heating, and ensuring the highest temperature does not exceed the normal operating temperature during charging and discharging), thereby improving the battery system's service life and safety.

[0150] In a fifth aspect, this embodiment provides a battery, including the battery module provided by this embodiment.

[0151] The battery provided in this embodiment uses the battery module provided in this embodiment, so the overall weight of the battery is small and the safety performance and energy density are high.

[0152] The battery provided in this embodiment can be applied to various types of loading vehicles.

[0153] In one embodiment, the battery further comprises a box, and the battery module is arranged in the box. By arranging the battery module in the box, the battery module can be protected.

[0154] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and example embodiments are to be considered merely as exemplary, and the true scope and spirit of this application are indicated by the appended claims.

[0155] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of protection of the present application is limited only by the appended claims.

Claims

1. A battery frame, characterized in that: include: First bracket; a second bracket, the second bracket being separately provided with the first bracket to form an installation space; a heat dissipation plate, the heat dissipation plate being installed in an installation space formed between the first bracket and the second bracket through a position-limiting clamping structure; The first bracket is provided with a first positioning portion, and the second bracket is provided with a second positioning portion and a third positioning portion. The first positioning portion and the second positioning portion are used to position the side of the single battery, and the third positioning portion is used to position the bottom of the single battery; wherein the tabs of the single battery do not need to be bent.

2. The battery frame according to claim 1, characterized in that The limiting clamping structure includes a first clamping portion and a first clamping fitting portion, the first clamping portion is arranged on the first bracket, the first clamping fitting portion is arranged on the heat dissipation plate, and the first clamping portion is clamped with the first clamping fitting portion to fix the first bracket to the heat dissipation plate.

3. The battery frame according to claim 2, characterized in that The first clamping portion is a limiting boss, the first clamping matching portion is a limiting hole, and the limiting boss is limited to the limiting hole.

4. The battery frame according to claim 3, characterized in that The limiting boss has a positioning surface, and the positioning surface abuts against the hole wall of the limiting hole to limit the heat dissipation plate from moving between the first bracket and the second bracket.

5. The battery frame according to claim 1, characterized in that The limiting clamping structure includes a second clamping portion and a second clamping fitting portion, the second clamping portion is arranged on the second bracket, the second clamping fitting portion is arranged on the heat dissipation plate, and the second clamping portion is clamped with the second clamping fitting portion to fix the second bracket to the heat dissipation plate.

6. The battery frame according to claim 1, characterized in that The first bracket is provided with a positioning structure, and / or the second bracket is provided with a positioning structure, and the positioning structure is used to position the heat dissipation plate.

7. The battery frame according to claim 6, characterized in that The first bracket is provided with a positioning structure, which includes a positioning boss and a first positioning plate. The positioning boss and the first positioning plate are both provided on the first bracket, and the minimum distance between the positioning boss and the surface of the first positioning plate close to the positioning boss is adapted to the thickness of the heat sink.

8. The battery frame according to claim 7, characterized in that: The positioning structure further includes a second positioning plate, which abuts against a portion of the surface of the heat dissipation plate to limit the heat dissipation plate from moving along a set direction, wherein the set direction is parallel to the length direction of the first bracket.

9. The battery frame according to claim 8, characterized in that: The second positioning plate includes a first sub-positioning plate and a second sub-positioning plate, and the first sub-positioning plate and the second sub-positioning plate are arranged opposite to each other along the length direction of the first bracket; the heat dissipation plate includes a main heat dissipation plate, a first side heat dissipation plate and a second side heat dissipation plate, and the first side heat dissipation plate and the second side heat dissipation plate are arranged opposite to each other at both ends of the heat dissipation plate along the set direction, the first side heat dissipation plate abuts against the surface of the first sub-positioning plate away from the second sub-positioning plate, and the second side heat dissipation plate abuts against the surface of the second sub-positioning plate away from the first sub-positioning plate.

10. The battery frame according to any one of claims 1 to 9, characterized in that: The first positioning portion includes a first positioning surface and a second positioning surface, and the first positioning surface and the second positioning surface are arranged opposite to each other along the length direction of the first bracket; the second positioning portion includes a third positioning surface and a fourth positioning surface, and the third positioning surface and the fourth positioning surface are arranged opposite to each other along the length direction of the second bracket; the third positioning portion includes a plurality of support plates, and the plurality of support plates are arranged at intervals along the length direction of the second bracket.

11. A battery cell, characterized in that: The invention comprises a single cell and a battery frame according to any one of claims 1 to 10, wherein the single cell is fixedly mounted in the battery frame, and a large surface of the single cell contacts the heat sink; wherein the tabs of the single cell do not need to be bent.

12. The battery cell according to claim 11, wherein: It also includes a conductive member, which is fixedly installed on the first bracket, and the tabs of the single battery are welded to the conductive member.

13. The battery cell according to claim 12, wherein: The conductive member includes a first connecting plate and a second connecting plate, the plate surface of the first connecting plate is perpendicular to the plate surface of the second connecting plate, and the plate surface of the first connecting plate is parallel to the extension direction of the pole ear of the single cell, so that the pole ear of the single cell can be attached to and welded to the plate surface of the first connecting plate, and the second connecting plate is fixedly installed on the first bracket for fixed connection to the busbar.

14. A battery assembly, characterized in that: The invention comprises a heating film and two battery cells according to any one of claims 11 to 13, wherein the heating film is located between the two battery cells, and large surfaces of the two battery cells are in contact with the heating film.

15. The battery assembly according to claim 14, wherein: An outlet terminal is provided on one side of the heating film close to the second bracket, and at least part of the outlet terminal is located on the side of the second bracket away from the first bracket. The outlet terminal is provided with a wire and a connector, and the wire and connector are used to realize the series and parallel connection of the heating films in multiple battery assemblies.

16. The battery assembly according to claim 15, characterized in that The second bracket is provided with a positioning edge and a positioning groove; the wire end is bent to form a vertical portion and a horizontal portion, the vertical portion and the heating film are in the same plane, the horizontal portion is located on the side of the second bracket away from the first bracket, the vertical portion and the side edge of the heating film close to the second bracket form an avoidance space, the positioning edge is located in the avoidance space, and the vertical portion is located in the positioning groove.

17. A battery module, characterized in that: The invention comprises a first battery cell, a last battery cell and at least one battery assembly according to any one of claims 14 to 16, wherein the battery assembly is located between the first battery cell and the last battery cell, wherein the first battery cell and the last battery cell are both the battery cells according to any one of claims 11 to 13.

18. The battery module according to claim 17, wherein: It also includes two auxiliary heating films; one of the auxiliary heating films is located on a side of the first battery cell away from the battery assembly, and the other auxiliary heating film is located on a side of the last battery cell away from the battery assembly.

19. The battery module according to claim 18, wherein: The structure of the auxiliary heating film is the same as that of the heating film.

20. The battery module according to claim 18, wherein: The outlet end of the auxiliary heating film has a power supply interface, and the power supply interface is used to connect to an external power source, or the power supply interface is used to connect to the positive and negative electrodes of a battery system.

21. The battery module according to any one of claims 17 to 20, characterized in that: It also includes a temperature sensor, which is bonded to the surface of the single battery through heat-conducting glue.

22. The battery module according to claim 21, characterized in that The first bracket is provided with a wire outlet hole, and the wire of the temperature sensor passes through the wire outlet hole.

23. The battery module according to claim 21, characterized in that The temperature sensor is connected to the module collection harness via a connector.

24. The battery module according to claim 23, wherein: The first bracket is provided with a harness groove, the module collecting harness is installed in the harness groove, and the groove wall of the harness groove is provided with a clamping protrusion; The battery module further includes a wire clip, which is provided with a hook. The hook cooperates with the clamping protrusion to fix the wire clip in the notch of the wire harness slot.

25. The battery module according to claim 21, characterized in that There are multiple temperature sensors, and the multiple temperature sensors are respectively arranged at different positions of the single battery.

26. A battery, characterized in that: A battery module comprising any one of claims 17 to 25.

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