Battery module and electric equipment with same

Abstract

The invention discloses a battery module and electric equipment with the battery module, the battery module comprises a battery monomer, a wire harness isolation plate and a temperature collection assembly, the battery monomer comprises a top cover and a shell, the shell is sealed by the top cover, a battery nameplate is arranged on the top cover, the wire harness isolation plate is arranged on one side, far away from the shell, of the top cover, and the temperature collection assembly is arranged in the shell. The temperature collecting assembly is installed on the wire harness isolation plate and comprises a temperature collecting part, and the temperature collecting part is fixedly connected with the battery nameplate. According to the battery module provided by the invention, the temperature acquisition part acquires the temperature of the battery nameplate, so that the temperature of the battery monomer can be better reflected, and the accuracy of temperature acquisition of the battery monomer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery module and an electrical device having the battery module. Background Art

[0002] The battery module includes multiple battery cells. The temperature of the battery cells is related to the safety of the battery module. In the related technology, NTC (Negative Temperature Coefficient) and other temperature sampling components are often welded on the aluminum connecting piece. The temperature of the battery cell is collected by collecting the temperature of the aluminum connecting piece. However, when the battery module is working, the temperature of the aluminum connecting piece will rise, resulting in a large difference between the temperature of the aluminum connecting piece and the actual temperature of the battery cell. This will cause the battery cell temperature reflected by the aluminum connecting piece to be inaccurate. Summary of the invention

[0003] The present invention aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the present invention provides a battery module that can more accurately reflect the actual temperature of a battery cell.

[0004] The present invention also provides an electrical device having the battery module.

[0005] According to an embodiment of the present invention, a battery module includes: a battery cell, a wiring harness isolation plate and a temperature collection component, the battery cell includes a top cover and a shell, the top cover seals the shell, a battery nameplate is provided on the top cover, the wiring harness isolation plate is provided on a side of the top cover away from the shell, the temperature collection component is installed on the wiring harness isolation plate, and the temperature collection component includes a temperature collection part, and the temperature collection part is fixedly connected to the battery nameplate.

[0006] In the related art, NTC and other temperature sampling parts are often welded on the connecting piece, and the connecting piece is in contact with the pole of the battery cell. The temperature of the battery cell is collected by collecting the temperature of the connecting piece. However, when the battery module is working, the temperature of the connecting piece will rise, making the temperature of the connecting piece and the actual temperature of the battery cell differ greatly, which will cause the battery cell temperature reflected by the connecting piece to be inaccurate. According to the battery module of the embodiment of the present invention, the battery nameplate is attached to the top cover, and the battery nameplate is closer to the battery cell than the connecting piece. The temperature sampling part collects the temperature of the battery nameplate, which can better reflect the temperature of the battery cell, which is conducive to improving the accuracy of the battery cell temperature collection.

[0007] According to some embodiments of the present invention, the temperature collection part and the battery nameplate are fixedly connected by thermally conductive adhesive, the wiring harness isolation plate includes a temperature collection fixing part, the temperature collection fixing part is constructed as a cylindrical structure with two ends passed through, a glue injection hole is formed at the end of the temperature collection fixing part facing away from the top cover, the temperature collection fixing part and the battery nameplate define a accommodating cavity, the top of the accommodating cavity is connected to the glue injection hole, the bottom of the accommodating cavity passes through the battery nameplate, and the temperature collection part and the thermally conductive adhesive are located in the accommodating cavity.

[0008] According to some embodiments of the present invention, an observation hole is provided on the temperature collection fixing portion, the observation hole is communicated with the accommodating cavity, and the observation hole passes through the cylinder wall of the temperature collection fixing portion in a straight line.

[0009] According to some embodiments of the present invention, the observation hole is configured as an arc-shaped hole surrounding the glue injection hole.

[0010] According to some embodiments of the present invention, there are a plurality of observation holes, and the plurality of observation holes are dispersedly arranged around the glue injection hole with the glue injection hole as the center.

[0011] According to some embodiments of the present invention, the temperature collection component also includes a wire, one end of which is connected to the temperature collection part, and the other end of the wire is located outside the accommodating cavity, and a wire hole for the wire to pass through is provided on the cylinder wall of the temperature collection fixing part, and the distance between the wire hole and the battery nameplate is smaller than the distance between the wire hole and the glue injection hole.

[0012] According to some embodiments of the present invention, the wiring harness isolation plate is provided with a guide groove at the entrance position of the temperature collection part entering the accommodating cavity, the guide groove is connected with the wire passing hole, the guide groove is inclined, the inclination angle of the guide groove is 5° to 15°, and the end of the guide groove close to the temperature collection fixing part is lower than the end of the guide groove away from the temperature collection fixing part.

[0013] According to some embodiments of the present invention, a buckle is provided on the wiring harness isolation plate, and the wire is suitable for being fixed on the wiring harness isolation plate by the buckle. The buckle is located on the side of the guide groove away from the temperature collection fixing part, and the distance between the buckle and the temperature collection fixing part is 8mm to 15mm, where mm represents millimeter.

[0014] According to some embodiments of the present invention, there are multiple battery cells, and the battery nameplates of a part or all of the battery cells have their temperatures collected by the corresponding temperature collection components.

[0015] According to some embodiments of the present invention, a plurality of the battery cells are electrically connected to form a battery pack, the battery pack having a positive output battery cell, a negative output battery cell and an intermediate battery cell, and the battery nameplates of the positive output battery cell, the negative output battery cell and at least one intermediate battery cell have their temperatures collected by the corresponding temperature collection components.

[0016] According to some embodiments of the present invention, the top of the battery cell is provided with an explosion-proof valve, and the minimum distance between the temperature sampling portion and the explosion-proof valve of the battery cell being heated is not less than a first preset distance value.

[0017] According to some embodiments of the present invention, the top of the battery cell has a pole, the battery module also includes a connecting piece, the connecting piece is fixed to the wiring harness isolation plate and electrically connected to the pole, and the minimum distance between the temperature collection part and the connecting piece of the battery cell being heated is not less than a second preset distance value.

[0018] According to another embodiment of the present invention, an electric device includes the above-mentioned battery module.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of a battery module according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0022] Figure 3 is a three-dimensional schematic diagram of a battery module according to an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0024] Figure 5 is a top view of a battery module according to an embodiment of the present invention;

[0025] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point C in the middle;

[0026] Figure 7 yes Figure 5 A partial enlarged schematic diagram of point D in the middle;

[0027] Figure 8 is a schematic diagram of an electrical device according to another embodiment of the present invention.

[0028] Reference numerals:

[0029] Electrical equipment 100, battery module 10, battery cell 1, top cover 11, battery nameplate 12, shell 13, end plate 14, wiring harness isolation plate 2, temperature collection fixing part 21, accommodating cavity 211, glue injection hole 22, observation hole 23, snap-on protrusion 24, guide groove 25, temperature collection component 3, temperature collection part 31, wire 32, buckle 4, connecting piece 5, snap-on groove 51, cable tie 6. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] Combine the following Figure 1-Figure 8 A battery module 10 and an electric device 100 having the battery module 10 according to an embodiment of the present invention are described in detail.

[0032] Reference Figure 1 , Figure 3 , Figure 5 As shown, the battery module 10 according to an embodiment of the present invention may include a battery cell 1 , a wiring harness isolation plate 2 and a temperature collection component 3 .

[0033] The battery cell 1 may include a top cover 11 and a shell 13 , wherein the top cover 11 seals the shell 13 . Specifically, the shell 13 is constructed as a top-opening structure, an electrode assembly and / or electrolyte are arranged inside the shell 13 , and the top cover 11 is arranged at the top opening of the shell 13 .

[0034] A battery nameplate 12 is provided on the top cover 11 , and the battery nameplate 12 records parameter information of the battery cell 1 , such as the model, rated power, maximum tolerable current, etc. of the battery cell 1 . The battery nameplate 12 is an identification mark of the battery cell 1 . Optionally, the battery nameplate 12 can be in direct contact with the top cover 11 , so that more heat of the battery cell 1 can be transferred to the battery nameplate 12 .

[0035] In some embodiments, a QR code is provided on the battery nameplate 12 , and the user can learn parameter information of the battery cell 1 , such as the model, rated power, and maximum tolerable current of the battery cell 1 , by scanning the QR code.

[0036] The harness isolation plate 2 is arranged on the side of the top cover 11 away from the housing 13, that is, the harness isolation plate 2 is arranged on the top outer side of the top cover 11, and the temperature collection component 3 is installed on the harness isolation plate 2, and the temperature collection component 3 includes a temperature collection part 31, and the temperature collection part 31 is fixedly connected to the battery nameplate 12. The temperature of the battery nameplate 12 can more accurately reflect the actual temperature of the battery cell 1. By collecting the temperature of the battery nameplate 12 to realize the collection of the temperature of the battery cell 1, the temperature collection of the battery cell 1 can be made more accurate.

[0037] Optionally, the temperature collection part 31 may be in direct contact with the battery nameplate 12, or may be in indirect contact through thermal conductive adhesive, or a part of the temperature collection part 31 may be in direct contact with the battery nameplate 12, and another part of the temperature collection part 31 may be in indirect contact with the battery nameplate 12 through thermal conductive adhesive. In addition to achieving the function of bonding and fixing the temperature collection part 31 to the battery nameplate 12, the thermal conductive adhesive may also increase the heat conduction area. The temperature collection part 31 may collect the temperature of the battery nameplate 12 through the thermal conductive adhesive with a larger volume, so that the temperature collection part 31 may collect the temperature of the battery nameplate 12 more accurately. In addition, the thermal conductive adhesive may also seal and isolate the battery nameplate 12 from air, so that the battery nameplate 12 may be preserved for a long time, and the writing on the battery nameplate 12 is not easily corroded or scratched.

[0038] Optionally, the temperature sampling unit 31 is a thermistor, and the thermistor may be a SMD NTC (Negative Temperature Coefficient) temperature sensor, or a water droplet type NTC temperature sensor.

[0039] Optionally, the cell nameplate 12 and the top cover 11 can be made of different materials. The cell nameplate 12 of the present invention can be made of metal, such as stainless steel or iron, and the top cover 11 can be made of plastic. The cell nameplate 12 and the top cover 11 are formed separately and connected together by welding. Metal materials have good thermal conductivity, so the cell nameplate 12 can better reflect the temperature of the battery cell 1.

[0040] The battery module 10 also includes a circuit board, and the temperature collection component 3 is connected to the circuit board. The temperature information of the battery nameplate 12 collected by the temperature collection component 3 can be transmitted to the circuit board of the battery module 10 to monitor the temperature of the battery cell 1. When the temperature information exceeds the preset temperature range, corresponding measures can be taken to ensure the safety of the battery module 10. For example, when the temperature information exceeds the preset temperature range, the internal circuit of the battery module 10 can be cut off to cut off the power of the battery module 10 to ensure the safety of the battery module 10.

[0041] In the related art, NTC and other temperature sampling parts are often welded on the connecting piece, and the connecting piece is in contact with the pole of the battery cell. The temperature of the battery cell is collected by collecting the temperature of the connecting piece. However, when the battery module is working, the temperature of the connecting piece will rise, making the temperature of the connecting piece and the actual temperature of the battery cell have a large difference, which will cause the battery cell temperature reflected by the connecting piece to be inaccurate. According to the battery module 10 of the embodiment of the present invention, the temperature sampling part 31 collects the temperature of the battery nameplate 12, which can better reflect the temperature of the battery cell 1, which is conducive to improving the accuracy of the temperature collection of the battery cell 1, and greatly reduces the influence of the heating of the connecting piece 5 itself on the temperature collection data.

[0042] In some embodiments of the present invention, Figure 1-Figure 2 , Figure 4 As shown, optionally, the temperature collection part 31 is fixedly connected to the battery nameplate 12 by a thermally conductive adhesive, and the wiring harness isolation plate 2 may include a temperature collection fixing part 21, which may be constructed as a cylindrical structure with two ends through, and a glue injection hole 22 is formed at one end of the temperature collection fixing part 21 away from the top cover 11, and the temperature collection fixing part 21 and the battery nameplate 12 define a receiving cavity 211, the top of the receiving cavity 211 is connected to the glue injection hole 22, and the bottom of the receiving cavity 211 is connected to the battery nameplate 12, and the temperature collection part 31 and the thermally conductive adhesive are located in the receiving cavity 211. Thermally conductive adhesive can be injected into the receiving cavity 211 through the glue injection hole 22, and the cavity wall of the receiving cavity 211 can limit the thermally conductive adhesive so that the thermally conductive adhesive is not easy to flow out to the outside of the temperature collection fixing part 21. Optionally, the cylindrical structure of the temperature collection fixing part 21 can be a square cylinder, a round cylinder, or a cylinder of other shapes.

[0043] In some embodiments of the present invention, reference Figure 4 , Figure 6-Figure 7 As shown, the temperature collection fixing part 21 is provided with an observation hole 23, which is arranged around the glue injection hole 22, and is communicated with the accommodating cavity 211. The observation hole 23 passes through the cylinder wall of the temperature collection fixing part 21 in a straight line. In this way, the observation hole 23 is a straight hole, which is convenient for directly observing the glue injection situation in the accommodating cavity 211 from the outer end of the observation hole 23. The glue injection situation of the accommodating cavity 211 can be observed at any time through the observation hole 23, which prevents the overflow of the thermal conductive glue caused by excessive glue injection, and can also avoid the waste of thermal conductive glue, which is conducive to saving costs.

[0044] Optionally, the observation hole 23 and the glue injection hole 22 can be both arranged on the top of the temperature collection fixing part 21, such as Figure 4As shown; or optionally, the glue injection hole 22 is arranged at the top of the temperature collection fixing part 21, and the observation hole 23 is arranged on the side of the temperature collection fixing part 21. At this time, the distance between the observation hole 23 and the glue injection hole 22 is smaller than the distance between the observation hole 23 and the battery nameplate 12. In this way, after the temperature collection part 31 is fixedly connected to the battery nameplate 12, the observation hole 23 is located on the side of the temperature collection part 31 away from the battery nameplate 12, and the observation hole 23 is far away from the battery nameplate 12. If the observation hole 23 is close to the battery nameplate 12, the thermal conductive glue is easy to overflow from the observation hole 23, resulting in failure of the thermal conductive glue.

[0045] In some embodiments of the present invention, reference Figure 4 , Figure 6-Figure 7 As shown, the observation hole 23 is constructed as an arc hole surrounding the glue injection hole 22, and the arc hole is bent and protruded in the direction away from the glue injection hole 22. In this way, the distances between each position of the observation hole 23 and the glue injection hole 22 are equal or approximately equal, so that it is easy to accurately grasp the volume of thermal conductive glue in the accommodating cavity 211.

[0046] In some embodiments of the present invention, there are multiple observation holes 23, and the multiple observation holes 23 are dispersedly arranged around the injection hole 22 with the injection hole 22 as the center, so that it is convenient to observe the injection situation from multiple directions. Figure 4 , Figure 6-Figure 7 In the example shown, there are four observation holes 23 , which are dispersedly arranged around the glue injection hole 22 .

[0047] Of course, in some embodiments not shown in the figures, the number of the observation hole 23 can also be one, so as to reduce the processing steps of the observation hole 23.

[0048] Optionally, the area of ​​the glue injection hole 22 may be larger than the area of ​​the observation hole 23 , so that the strength of the temperature collection fixing part 21 is not excessively weakened while ensuring the glue injection efficiency at the glue injection hole 22 .

[0049] In some embodiments of the present invention, reference Figure 1-Figure 2 , Figure 6-Figure 7 As shown, the temperature collection component 3 also includes a wire 32, one end of which is connected to the temperature collection part 31, and the other end of the wire 32 is located outside the accommodating cavity 211. The temperature collection fixing part 21 is provided with a wire hole for the wire 32 to pass through, and the distance between the wire hole and the battery nameplate 12 is smaller than the distance between the wire hole and the glue injection hole 22. In this way, the wire hole is closer to the battery nameplate 12. After the temperature collection part 31 is fixedly connected to the battery nameplate 12, the wire 32 will not be excessively bent, and the wire 32 passes through the wire hole, so that the probability of glue leakage at the wire hole is reduced.

[0050] It can be understood that "one end of the wire 32 is connected to the temperature collection part 31" includes mechanical connection, electrical connection, and communication connection. The temperature information of the battery nameplate 12 collected by the temperature collection part 31 can be transmitted to the circuit board of the battery module 10 through the wire 32. When the battery module 10 includes a circuit board, one end of the wire 32 located outside the accommodating cavity 211 is connected to the circuit board. The temperature collection part 31 is pressed on the battery nameplate 12 through the temperature collection fixing part 21 of the harness isolation plate 2. The wire hole can prevent the wire 32 from moving at will, thereby effectively preventing the temperature collection part 31 from falling off, which is conducive to improving the reliability of temperature collection.

[0051] In some embodiments of the present invention, reference Figure 2 , Figure 6-Figure 7 As shown, the wiring harness isolation plate 2 is provided with a guide groove 25 at the entrance position where the temperature collection part 31 enters the accommodating cavity 211. The guide groove 25 is connected to the wire passing hole. The guide groove 25 is inclined. The inclination angle of the guide groove 25 is 5°~15°, and the end of the guide groove 25 close to the temperature collection fixing part 21 is lower than the end of the guide groove 25 away from the temperature collection fixing part 21. That is to say, the closer to the temperature collection fixing part 21, the more concave the guide groove 25 is, so that it is convenient for the temperature collection part 31 to be inserted into the wire passing hole and then enter the accommodating cavity 211. The wire passing hole can also be closer to the battery nameplate 12. Even if glue overflows at the wire passing hole, the overflowed glue will preferentially flow into the guide groove 25.

[0052] Optionally, the inclination angle of the guide groove 25 is 5°, 7°, 9°, 11°, 13°, 15°, etc. Of course, the inclination angle of the guide groove 25 can also be other values ​​between 5° and 15°, which are not listed here one by one.

[0053] In some embodiments of the present invention, reference Figure 2 , Figure 6-Figure 7 As shown, a buckle 4 is provided on the harness isolation plate 2, and the wire 32 is suitable for being fixed on the harness isolation plate 2 by the buckle 4, so as to prevent the wire 32 from falling off, improve the arrangement neatness of the wire 32, and prevent the temperature collecting part 31 from jumping up. Optionally, the buckle 4 may include a first clamping arm and a second clamping arm, one end of the first clamping arm is connected to one end of the second clamping arm, the other end of the first clamping arm and the other end of the second clamping arm are separated and arranged relatively, and the separated ends of the first clamping arm and the second clamping arm form a clamping entrance, and the wire 32 is suitable for entering the clamping space surrounded by the first clamping arm and the second clamping arm through the clamping entrance, and the width of the clamping entrance is smaller than the wire diameter of the wire 32, so that after the wire 32 is clamped into the clamping space, the wire 32 is not easy to fall out of the clamping space.

[0054] Furthermore, the buckle 4 is located on the side of the guide groove 25 away from the temperature collection fixing part 21, and the distance between the buckle 4 and the temperature collection fixing part 21 is 8mm to 15mm. For example, optionally, the distance between the buckle 4 and the temperature collection fixing part 21 is 8mm, 10mm, 12mm, 14mm, 15mm, etc. Of course, the distance between the buckle 4 and the temperature collection fixing part 21 can also be other values ​​between 8mm and 15mm, which are not listed here one by one.

[0055] In some embodiments of the present invention, reference Figure 1 , Figure 3 , Figure 5 As shown, there are multiple battery cells 1, and the battery nameplates 12 of a part or all of the battery cells 1 are temperature-collected by the corresponding temperature collection components 3. Specifically, the battery nameplates 12 of no less than 30% of the battery cells 1 are temperature-collected by the corresponding temperature collection components 3, for example, the battery nameplates 12 of half of the battery cells 1 are temperature-collected by the corresponding temperature collection components 3.

[0056] A plurality of battery cells 1 are electrically connected to form a battery pack, which comprises a positive output battery cell, a negative output battery cell and an intermediate battery cell. The battery nameplates 12 of the positive output battery cell, the negative output battery cell and at least one intermediate battery cell have their temperatures collected by the corresponding temperature collection components 3 .

[0057] In some embodiments of the present invention, reference Figure 3 As shown, there are multiple battery cells 1, and the outer peripheries of the multiple battery cells 1 are provided with tie ties 6. In other words, the tie ties 6 are tied around the outer peripheries of the multiple battery cells 1 so that the multiple battery cells 1 are close to each other. The tie ties 6 can provide a binding force to the battery cells 1. In the height direction of the battery cell 1 (i.e., the F3-F4 direction), there can be multiple tie ties 6, such as Figure 3 In the example shown, there are two cable ties 6 , which can be arranged in parallel to bundle the upper and lower parts of the battery cells 1 .

[0058] In some embodiments of the present invention, reference Figure 1 , Figure 3 , Figure 5 As shown, there are multiple battery cells 1, and the multiple battery cells 1 are along a first direction (i.e., F1-F2 direction). In the first direction, at least one end of the multiple battery cells 1 is provided with an end plate 14, and the end plate 14 can be provided with a management system of the battery module 10, such as a BMS, BDU, circuit board, etc. The temperature information of the battery nameplate 12 collected by the temperature sampling unit 31 can be transmitted to the management system of the battery module 10 via the wire 32. Figure 1 , Figure 3 , Figure 5In the example shown, end plates 14 are provided at both ends of the plurality of battery cells 1, so that the management system of the battery module 10 can be split, with one part located on the end plate 14 at the F1 end and the other part located on the end plate 14 at the F2 end, which is conducive to the rational arrangement of electrical connections.

[0059] In some embodiments of the present invention, the top of the battery cell 1 is provided with an explosion-proof valve, and the minimum distance between the temperature collection part 31 and the explosion-proof valve of the battery cell 1 being heated is not less than the first preset distance value. In this way, there is a certain safety distance between the temperature collection part 31 and the explosion-proof valve, and when the battery cell 1 undergoes thermal runaway and high-temperature ejection is ejected from the explosion-proof valve, the high-temperature ejection has little effect on the temperature collection part 31. Optionally, the first preset distance value can be set according to actual needs, for example, it can be 10mm, 20mm, 30mm, etc.

[0060] In some embodiments of the present invention, the top of the battery cell 1 has a pole, and the battery module 10 also includes a connecting piece 5, which is fixed to the wiring harness isolation plate 2, and the connecting piece 5 is electrically connected to the pole, and a voltage collection line is connected to the connecting piece 5, and the minimum distance between the temperature collection part 31 and the connecting piece 5 of the battery cell 1 to be heated is not less than the second preset distance value. In this way, there is a certain safety distance between the temperature collection part 31 and the connecting piece 5. When the battery cell 1 is working, the connecting piece 5 generates heat, and the heat of the connecting piece 5 itself has little effect on the temperature collection part 31. Similarly, the second preset distance value can be set according to actual needs, for example, it can be 10mm, 20mm, 30mm, etc. In the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0061] In some embodiments of the present invention, reference Figure 1 , Figure 3 , Figure 5 As shown, there are multiple battery cells 1, and the poles of two adjacent battery cells 1 can be connected by a connecting piece 5. When the battery module 10 includes an end plate 14, the end plate 14 and the adjacent battery cells 1 can also be connected by a connecting piece 5.

[0062] In some embodiments of the present invention, the connecting piece 5 and the wiring harness isolation plate 2 can be fixed by clamping. Figure 6-Figure 7 In the illustrated embodiment, the wiring harness isolation plate 2 is provided with a snap-on protrusion 24, and the connecting piece 5 is provided with a snap-on groove 51. The snap-on protrusion 24 is snapped into the snap-on groove 51, so that the connecting piece 5 can be installed and fixed on the wiring harness isolation plate 2. The snap-on method is convenient for assembly and disassembly, and is convenient for maintenance and replacement of the connecting piece 5. There are one or more snap-on grooves 51 on a connecting piece 5, and the snap-on protrusions 24 correspond to the snap-on grooves 51 in a one-to-one snap-on manner.

[0063] Optionally, the connecting piece 5 may be an aluminum connecting piece, a copper connecting piece, or a connecting piece made of other materials. When there are multiple battery cells 1, the connecting pieces 5 of different battery cells 1 may be made of the same material or different materials.

[0064] Reference Figure 8 As shown, an electric device 100 according to another embodiment of the present invention includes the battery module 10 of the above embodiment.

[0065] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of this specification, the description with reference to the terms "some embodiments" or "examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A battery module (10), characterized in that: include: A battery cell (1), the battery cell (1) comprising a top cover (11) and a shell, the top cover (11) sealing the shell (13), and a battery nameplate (12) being provided on the top cover (11); A wire harness isolation plate (2), the wire harness isolation plate (2) being arranged on a side of the top cover (11) away from the housing (13); A temperature collection component (3), the temperature collection component (3) is installed on the wiring harness isolation plate (2), and the temperature collection component (3) comprises a temperature collection part (31), and the temperature collection part (31) is fixedly connected to the battery nameplate (12).

2. The battery module (10) according to claim 1, characterized in that: The temperature collection part (31) is fixedly connected to the battery nameplate (12) by means of a heat-conducting adhesive. The wiring harness isolation plate (2) comprises a temperature collection fixing part (21). The temperature collection fixing part (21) is constructed as a cylindrical structure with two ends through. A glue injection hole (22) is formed at the end of the temperature collection fixing part (21) away from the top cover (11). The temperature collection fixing part (21) and the battery nameplate (12) define a receiving cavity (211). The top of the receiving cavity (211) is connected to the glue injection hole (22). The bottom of the receiving cavity (211) is connected to the battery nameplate (12). The temperature collection part (31) and the heat-conducting adhesive are located in the receiving cavity (211).

3. The battery module (10) according to claim 2, characterized in that: The temperature collection fixing part (21) is provided with an observation hole (23), the observation hole (23) is communicated with the accommodating cavity (211), and the observation hole (23) passes through the cylinder wall of the temperature collection fixing part (21) in a straight line.

4. The battery module (10) according to claim 3, characterized in that: The observation hole (23) is constructed as an arc-shaped hole surrounding the glue injection hole (22).

5. The battery module (10) according to claim 3 or 4, characterized in that: There are a plurality of observation holes (23), and the plurality of observation holes (23) are dispersedly arranged around the glue injection hole (22) with the glue injection hole (22) as the center.

6. The battery module (10) according to claim 2, characterized in that: The temperature collection component (3) further comprises a wire (32), one end of which is connected to the temperature collection portion (31), and the other end of which is located outside the accommodating cavity (211); a wire hole for the wire (32) to pass through is provided on the wall of the temperature collection fixing portion (21); and the distance between the wire hole and the battery nameplate (12) is smaller than the distance between the wire hole and the glue injection hole (22).

7. The battery module (10) according to claim 6, characterized in that: The wiring harness isolation plate (2) is provided with a guide groove (25) at the entrance position of the temperature collection part (31) entering the accommodating cavity (211), the guide groove (25) is connected with the wire passing hole, the guide groove (25) is inclined, the inclination angle of the guide groove (25) is 5° to 15°, and the end of the guide groove (25) close to the temperature collection fixing part (21) is lower than the end of the guide groove (25) away from the temperature collection fixing part (21).

8. The battery module (10) according to claim 7, characterized in that: The harness isolation plate (2) is provided with a buckle (4), and the wire (32) is suitable for being fixed to the harness isolation plate (2) by the buckle (4). The buckle (4) is located on a side of the guide groove (25) away from the temperature collection fixing portion (21), and the distance between the buckle (4) and the temperature collection fixing portion (21) is 8 mm to 15 mm.

9. The battery module (10) according to claim 1, characterized in that: There are a plurality of battery cells (1), and the temperature of the battery nameplates (12) of a part or all of the battery cells (1) is collected by the corresponding temperature collection components (3).

10. The battery module (10) according to claim 1 or 9, characterized in that: A plurality of battery cells (1) are electrically connected to form a battery pack, the battery pack comprising a positive output battery cell, a negative output battery cell and an intermediate battery cell, the battery nameplates (12) of the positive output battery cell, the negative output battery cell and at least one intermediate battery cell having their temperatures collected by the corresponding temperature collection components (3).

11. The battery module (10) according to claim 1 or 9, characterized in that: The top of the battery cell (1) is provided with an explosion-proof valve, and the minimum distance between the temperature collection portion (31) and the explosion-proof valve of the battery cell whose temperature is collected is not less than a first preset distance value.

12. The battery module (10) according to claim 1 or 9, characterized in that: The top of the battery cell (1) has a pole, the battery module (10) further comprises a connecting piece (5), the connecting piece (5) is fixed to the wiring harness isolation plate (2) and is electrically connected to the pole, and the minimum distance between the temperature collection part (31) and the connecting piece (5) of the battery cell to be heated is not less than a second preset distance value.

13. An electrical equipment, characterized in that: A battery module (10) comprising any one of claims 1 to 12.

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