Battery device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device. The battery device comprises a battery column, a heat exchange plate and a temperature collector, the battery column comprises at least two single batteries which are sequentially arranged along a first direction, each single battery is provided with a side surface and an end surface, and the side surfaces and the end surfaces are intersected; the heat exchange plate is arranged on one side of the battery column, extends in the first direction and is in heat conduction contact with one part of the side surfaces of the at least two single batteries, so that the end surface comprises a first part and a second part, and the first part is closer to the heat exchange plate relative to the second part; the temperature collector is arranged on the second part. The temperature signal collected by the temperature collector of the battery device is accurate, the temperature state of the single battery can be accurately known, and safety accidents are avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a battery device. Background Art

[0002] At present, a temperature collector needs to be set in the battery device to collect the real-time temperature of the single battery in order to understand the working status of the battery device; and a heat exchange plate needs to be set in the battery device to cool down or heat up the single battery. Therefore, the heat exchange plate will affect the temperature collector, resulting in inaccurate temperature signals collected by the temperature collector.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] The purpose of the present disclosure is to overcome the deficiencies of the above-mentioned related technologies and provide a battery device.

[0005] According to one aspect of the present disclosure, there is provided a battery device, comprising:

[0006] A battery column, comprising at least two single batteries arranged in sequence along a first direction, wherein the single batteries have a side surface and an end surface, and the side surface is arranged to intersect with the end surface;

[0007] a heat exchange plate, arranged at one side of the battery array, the heat exchange plate extending along the first direction and in thermal contact with a portion of the side surfaces of at least two of the single batteries, so that the end surface includes a first portion and a second portion, and the first portion is closer to the heat exchange plate than the second portion;

[0008] The temperature collector is arranged in the second part.

[0009] The battery device disclosed in the present invention, on the one hand, is provided with a temperature collector at the second part of the end surface of the single cell away from the heat exchange plate, so that the temperature collector is far away from the heat exchange plate, avoiding the influence of the heat exchange plate on the temperature collector, making the temperature signal collected by the temperature collector more accurate, and being able to accurately understand the temperature state of the single cell, avoiding safety accidents. On the other hand, only providing a heat exchange plate on one side of the battery column can improve space utilization and reduce costs to a certain extent.

[0010] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0012] Figure 1 FIG. 1 is a schematic structural diagram of an exemplary embodiment of a battery device disclosed herein.

[0013] Figure 2 for Figure 1 Schematic diagram of the structure of the connection between the circuit board, the temperature collector and the electrical signal acquisition unit.

[0014] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of a single cell.

[0015] Description of reference numerals:

[0016] 1. battery box; 11. first side frame; 12. second side frame; 13. bottom plate;

[0017] 2. Battery pack; 21. Battery array; 211. Single battery; 211a. Battery housing; 211a1. Cover plate; 211a2. Side wall; 211a3. Bottom wall; 211b. Battery pole; 2111. Side surface; 2112. End surface; 2112a. First part; 2112b. Second part; 2113. First electrode; 2114. Second electrode;

[0018] 3. Heat exchange plate; 4. Temperature collector; 5. Conductive bar; 6. Electrical signal collection unit;

[0019] 7. Circuit board; 71. First conductor; 72. Second conductor; 73. Third conductor;

[0020] 8. Protection frame;

[0021] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0022] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0023] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0024] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0025] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. "And / or" is just a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0026] The present disclosure provides a battery device according to an exemplary embodiment. Figure 1-Figure 3 As shown, the battery device may include a battery column 21, a heat exchange plate 3 and a temperature collector 4; the battery column 21 may include at least two single cells 211 arranged in sequence along a first direction X, the single cell 211 has a side surface 2111 and an end surface 2112, and the side surface 2111 and the end surface 2112 are arranged to intersect; the heat exchange plate 3 is arranged on one side of the battery column 21, the heat exchange plate 3 extends along the first direction X, and is in thermal contact with the side surfaces 2111 of at least two single cells 211, so that the end surface 2112 may include a first portion 2112a and a second portion 2112b, and the first portion 2112a is closer to the heat exchange plate 3 than the second portion 2112b; the temperature collector 4 is arranged at the second portion 2112b.

[0027] The battery device disclosed in the present invention, on the one hand, is provided with a temperature collector 4 at the second part 2112b of the end surface 2112 of the single battery 211 away from the heat exchange plate 3, so that the temperature collector 4 is far away from the heat exchange plate 3, avoiding the heat exchange plate 3 from affecting the temperature collector 4, making the temperature signal collected by the temperature collector 4 more accurate, and being able to accurately understand the temperature state of the single battery 211, avoiding safety accidents. On the other hand, only providing the heat exchange plate 3 on one side of the battery array 21 can improve space utilization and reduce costs to a certain extent.

[0028] In this example implementation, refer to Figure 1 As shown, the battery device may include a battery box 1, and the battery box 1 may be set to a rectangular parallelepiped structure. Specifically, the battery box 1 may include a bottom plate 13, a protective cover (not shown in the figure), two first side frames 11 and two second side frames 12, and the bottom plate 13 and the protective cover may be set to a rectangular shape. Two first side frames 11 and two second side frames 12 are arranged around the bottom plate 13, and the two first side frames 11 and the two second side frames 12 are connected end to end to form a rectangular frame, the first side frame 11 extends along the first direction X, and the second side frame 12 extends along the second direction Y. A protective cover is arranged on the other side of the two first side frames 11 and the two second side frames 12 opposite to the bottom plate 13, so that the protective cover is arranged opposite to the bottom plate 13, and the two first side frames 11 and the two second side frames 12 are connected between the protective cover and the bottom plate 13. The bottom plate 13, the protective cover, the two first side frames 11 and the two second side frames 12 surround and form a accommodating cavity of the battery box 1.

[0029] Of course, in other exemplary embodiments of the present disclosure, the bottom plate 13 and the protective cover can be set to be circular, elliptical, trapezoidal, etc., and the side frame can be set to one or more, and surrounded to form a circular, elliptical, trapezoidal, etc., so that the battery box 1 is formed into a cylindrical, elliptical column, prism, etc. The battery box 1 can also be in other shapes, which will not be repeated here.

[0030] Reference Figure 1 As shown, a battery column 21 is arranged in the battery box 1. A battery column 21 may include at least two single cells 211 arranged in sequence along the first direction X. For example, two single cells 211 may be arranged in sequence along the first direction X to form a battery column 21, or three or more single cells 211 may be arranged in sequence along the first direction X to form a battery column 21. Multiple single cells 211 are arranged to form multiple battery columns 21. Two adjacent battery columns 21 form a battery pack 2. One battery pack 2 may be arranged in the battery box 1, or two or more battery packs 2 may be arranged.

[0031] The single cells 211 in two adjacent columns of battery columns 21 are staggered. For example, the gaps between the single cells 211 in the first column and the adjacent two single cells 211 in the second column are arranged opposite to each other, rather than the single cells 211 in the first column and the single cells 211 in the second column being arranged opposite to each other, so as to improve the space utilization of the accommodating cavity of the battery box 1, thereby improving the energy density of the battery device.

[0032] In this example implementation, refer to Figure 3 As shown, the single battery 211 has a side surface 2111 and an end surface 2112 , and the side surface 2111 and the end surface 2112 are arranged to intersect.

[0033] Specifically, the single battery 211 may be a cylindrical battery, and the battery housing 211a may be set as a cylinder, that is, the battery housing 211a may include a cover plate 211a1 and a bottom wall 211a3 that are arranged opposite to each other, and the cover plate 211a1 and the bottom wall 211a3 are both arranged in a circular shape, and a side wall 211a2 is connected between the cover plate 211a1 and the bottom wall 211a3, and the side wall 211a2 is arranged in a cylindrical shape. The side wall 211a2, the cover plate 211a1 and the bottom wall 211a3 surround and form a housing cavity for the single battery 211. The outer surface of the side wall 211a2 is the side surface 2111 of the single cell 211, and the side surface 2111 is cylindrical; the outer surfaces of the cover plate 211a1 and the bottom wall 211a3 are the end surface 2112 of the single cell 211, and the end surface 2112 is a circular plane or an annular plane; the side surface 2111 and the end surface 2112 are arranged to intersect, for example, the side surface 2111 and the end surface 2112 can be arranged vertically.

[0034] Of course, in some other example embodiments of the present disclosure, the single cell 211 may also be a quadrangular prism battery, a pentagonal prism battery, a hexagonal prism battery, etc. In this case, the side surface 2111 may include a plurality of rectangular planar sub-side surfaces, and the end surface 2112 may be arranged as a rectangular, pentagonal, hexagonal, etc. plane.

[0035] The material of the battery housing 211a can be aluminum, steel or other metals and alloys. Of course, it can also be other materials, which are not described here one by one.

[0036] In this example embodiment, a battery cell is arranged in the accommodating cavity of the battery housing 211a, and the battery cell may include a battery cell body, a first pole ear and a second pole ear, and the polarity of the first pole ear is opposite to that of the second pole ear. The battery cell body is arranged as a column, for example, the battery cell body can be arranged as a cylinder adapted to the battery housing 211a. The battery cell body has a first end face and a second end face, and the first end face is arranged opposite to the second end face. The battery cell body may include a first pole piece and a second pole piece, and a separator arranged between the first pole piece and the second pole piece, and the battery cell body may be formed by winding the first pole piece, the separator and the second pole piece arranged in a stacked manner. Active material is coated on the first pole piece and the second pole piece.

[0037] The first pole ear is connected to the battery body, specifically, the first pole ear is connected to the first pole piece; the first pole ear is located at the first end surface of the battery body close to the cover plate 211a1. The second pole ear is connected to the battery body, specifically, the second pole ear is connected to the second pole piece; and the second pole ear can be located on the same side of the battery body as the first pole ear, that is, the second pole ear can be located at the first end surface of the battery body close to the cover plate 211a1, so that the first pole ear and the second pole ear are arranged on the side of the first end surface away from the battery body.

[0038] The first pole tab may be a portion of the multi-layer first pole sheet extending out of the battery body, and being bent to the side of the first end face of the battery body away from the battery body to form the first pole tab, so that the first pole tab may include a multi-layer first pole tab sheet. The second pole tab may be a portion of the multi-layer second pole sheet extending out of the battery body, and being bent to the side of the first end face of the battery body away from the battery body to form the second pole tab, so that the second pole tab may include a multi-layer second pole tab sheet.

[0039] It should be noted that the first pole tab and the second pole tab are conductive foil areas without active material coating, that is, no active material coating is coated on the first pole tab and the second pole tab, and the first pole tab and the second pole tab are current collecting layers for transmitting current.

[0040] In this example implementation, refer to Figure 3 As shown, the battery pole 211b is insulated and connected to the cover plate 211a1. Specifically, a through hole is provided on the cover plate 211a1, and the battery pole 211b passes through the through hole and is riveted to the cover plate 211a1. An insulating member is provided between the battery pole 211b and the cover plate 211a1 to insulate the battery pole 211b from the cover plate 211a1.

[0041] The battery pole 211b is connected to the first pole ear, and the battery pole 211b is the first electrode 2113 of the single cell 211, and the first electrode 2113 can be a positive electrode; the cover plate 211a1 is connected to the second pole ear, and the cover plate 211a1 is the second electrode 2114 of the single cell 211, and the second electrode 2114 can be a negative electrode; so that the first electrode 2113 and the second electrode 2114 are arranged at the same end of the single cell 211. Of course, the first electrode 2113 can also be a negative electrode, and the second electrode 2114 can be a positive electrode. With such an arrangement, the series or parallel connection between the single cells 211 can be realized at one end of the single cell 211, which facilitates the electrical connection between the single cells 211.

[0042] Reference Figure 1 As shown, a heat exchange plate 3 is provided on one side of the battery column 21, and the heat exchange plate 3 extends along the first direction X, so that the heat exchange plate 3 is in thermal contact with a portion of the side surfaces 2111 of at least two single cells 211, that is, the heat exchange plate 3 is in thermal contact with a portion of the side surfaces 2111 of at least two single cells 211 of a column of battery columns 21; no heat exchange plate 3 is provided on the other side opposite to the battery column 21, that is, the heat exchange plate 3 is provided only on one side of the battery column 21, which can improve space utilization and reduce costs to a certain extent.

[0043] In this example implementation, refer to Figure 1 As shown, the heat exchange plate 3 is arranged in a wave shape, and the heat exchange plate 3 is arranged between two adjacent battery columns 21, and is in heat exchange contact with a part of the cylindrical side surface 2111 of the single battery 211 in the two adjacent battery columns 21. The two adjacent battery columns 21 form a group of battery packs 2, and a heat exchange plate 3 is arranged between the two adjacent battery columns 21 belonging to the same group. The heat exchange between the two adjacent battery columns 21 belonging to the same group is performed by one heat exchange plate 3, and no heat exchange plate 3 is arranged between the two adjacent battery columns 21 that do not belong to the same group, so as to increase the utilization rate of the internal space of the battery box 1.

[0044] In this configuration, the end surface 2112 of the single battery 211 may include a first portion 2112a and a second portion 2112b, wherein the first portion 2112a is closer to the heat exchange plate 3 than the second portion 2112b, that is, the first portion 2112a is closer to the heat exchange plate 3 and the second portion 2112b is farther away from the heat exchange plate 3.

[0045] It should be noted that the first portion 2112 a and the second portion 2112 b may be divided according to a central axis of the end surface 2112 extending along the first direction X.

[0046] Of course, in some other example embodiments of the present disclosure, when the single cell 211 is configured as a quadrangular prism battery, a pentagonal prism battery, a hexagonal prism battery, etc., the heat exchange plate 3 is configured as a flat plate, and the heat exchange plate 3 is in heat exchange contact with at least one sub-side of the side 2111 of the single cell 211.

[0047] Reference Figure 1 As shown, the temperature collector 4 is arranged in the second part 2112b, that is, the temperature collector 4 is arranged on a part of the end surface 2112 of the single battery 211 away from the heat exchange plate 3, so that the temperature collector 4 is far away from the heat exchange plate 3, avoiding the influence of the heat exchange plate 3 on the temperature collector 4, making the temperature signal collected by the temperature collector 4 more accurate, and being able to accurately understand the temperature status of the single battery 211, avoiding safety accidents.

[0048] In this example implementation, refer to Figure 1 As shown, in the second direction Y, the minimum distance K1 between the temperature collector 4 and the heat exchange plate 3 is greater than or equal to 13 mm and less than or equal to 46 mm. For example, the minimum distance K1 between the temperature collector 4 and the heat exchange plate 3 can be 15 mm, 17 mm, 20 mm, 23 mm, 25 mm, 28 mm, 30 mm, 32 mm, 35 mm, 37 mm, 40 mm, 43 mm, 45 mm, etc.

[0049] If the minimum distance K1 between the temperature collector 4 and the heat exchange plate 3 is too small, the temperature collector 4 is still too close to the heat exchange plate 3, and the heat exchange plate 3 will affect the temperature collector 4, resulting in inaccurate temperature signals collected by the temperature collector 4, and the temperature status of the single battery 211 cannot be accurately understood, which may easily cause safety accidents.

[0050] If the minimum distance K1 between the temperature collector 4 and the heat exchange plate 3 is too large, the temperature collector 4 will exceed the range of the cover plate 211a1 of the single battery 211, which will also affect the accuracy of temperature collection.

[0051] The above numerical range not only makes the temperature collector 4 farther away from the heat exchange plate 3, avoiding the influence of the heat exchange plate 3 on the temperature collector 4, but also makes the temperature signal collected by the temperature collector 4 more accurate, so as to accurately understand the temperature status of the single cell 211 and avoid safety accidents; but also makes the temperature collector 4 not exceed the range of the cover plate 211a1 of the single cell 211, thereby ensuring the accuracy of temperature collection.

[0052] It should be noted that the second direction Y is parallel to the end surface 2112 , and the second direction Y intersects with the first direction X. For example, the second direction Y is perpendicular to the first direction X.

[0053] In this example implementation, refer to Figure 1As shown, the battery device may further include a conductive bar 5, which is connected to the end surface 2112 of the single cell 211. Specifically, the conductive bar 5 is connected to two single cells 211 arranged in sequence along the first direction X, one end of the conductive bar 5 is connected to the first electrode 2113 of one of the single cells 211, and the other end of the conductive bar 5 is connected to the second electrode 2114 of the other single cell 211, so that the two single cells 211 arranged in sequence along the first direction X are connected in series. Therefore, the conductive bar 5 realizes the electrical connection of the single cells 211, and the conductive bar 5 needs to conduct current.

[0054] The temperature collector 4 is located on the side of the conductive bar 5 away from the heat exchange plate 3. The conductive bar 5 can further isolate the temperature collector 4 from the heat exchange plate 3 to avoid the heat exchange plate 3 from affecting the temperature collector 4. Moreover, when the single cell 211 is working, the conductive bar 5 needs to conduct current, which causes the temperature of the conductive bar 5 and the working temperature of the single cell 211 to rise. The temperature collector 4 is arranged on the side of the conductive bar 5 away from the heat exchange plate 3, so that the temperature collector 4 can accurately collect the working temperature of the single cell 211, and can accurately understand the temperature state of the single cell 211 to avoid safety accidents.

[0055] Specifically, in the second direction Y, the minimum distance between the conductive bar 5 and the temperature collector 4 is greater than or equal to 2 mm and less than or equal to 14 mm. For example, the minimum distance between the conductive bar 5 and the temperature collector 4 can be 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, and the like.

[0056] If the minimum distance between the conductive bar 5 and the temperature collector 4 is too small, interference will occur between the conductive bar 5 and the temperature collector 4 .

[0057] If the minimum distance between the conductive bar 5 and the temperature collector 4 is too large, the temperature collector 4 will exceed the range of the cover plate 211a1 of the single battery 211, which will also affect the accuracy of temperature collection.

[0058] The above numerical range not only avoids interference between the conductive bar 5 and the temperature collector 4, but also ensures that the temperature collector 4 does not exceed the range of the cover plate 211a1 of the single battery 211, thereby ensuring the accuracy of temperature collection.

[0059] The temperature collector 4 may be an NTC (Negative Temperature Coefficient) thermistor. An NTC thermistor is a type of sensor resistor whose resistance value decreases as the temperature increases.

[0060] In this example implementation, refer to Figure 1 and Figure 2 As shown, the battery device may further include a circuit board 7 and an electrical signal acquisition unit 6. The circuit board 7 is disposed on the side of the end surface 2112 away from the single battery 211. For example, it may be disposed above the end surface 2112 of the single battery 211 or below the end surface 2112 of the single battery 211. In the first direction X, the length of the circuit board 7 is substantially the same as the length of the battery column 21. One circuit board 7 may detect temperature signals and voltage signals of one, two or more battery columns 21. The circuit board 7 may be a flexible circuit board 7.

[0061] A plurality of wires are arranged in the circuit board 7. Figure 2 Only some of the wires are shown. In order to distinguish, the first wire 71 is drawn as a dotted line, and the second wire 72 and the third wire 73 are drawn as solid lines. For example, the circuit board 7 may include a first wire 71, a second wire 72 and a third wire 73. The first wire 71, the second wire 72 and the third wire 73 may be arranged basically in parallel, and the first wire 71, the second wire 72 and the third wire 73 are not connected to each other.

[0062] The electric signal collection part 6 can be electrically connected to the second part 2112b, that is, the electric signal collection part 6 can be electrically connected to the second part 2112b of the end surface 2112 away from the heat exchange plate 3. Specifically, the electric signal collection part 6 can be welded to the second part 2112b. The electric signal collection part 6 is used to collect voltage signals. The electric signal collection part 6 can be a metal sheet, specifically, the electric signal collection part 6 can be a nickel sheet.

[0063] In addition, in some other exemplary embodiments of the present disclosure, the electrical signal collecting unit 6 may be electrically connected to the conductive bar 5 , and the electrical signal collecting unit 6 may also collect voltage signals.

[0064] The electrical signal collecting unit 6 is connected to the circuit board 7 and is electrically connected to the first wire 71 . The voltage signal collected by the electrical signal collecting unit 6 can be transmitted through the first wire 71 on the circuit board 7 .

[0065] The temperature collector 4 is stacked with the electric signal collector 6 . In this exemplary embodiment, the temperature collector 4 is disposed on the side of the electric signal collector 6 away from the single battery 211 , that is, the temperature collector 4 is stacked above the electric signal collector 6 .

[0066] Specifically, the battery device may further include an insulating thermally conductive adhesive layer, which is bonded between the temperature collector 4 and the electrical signal collector 6 , that is, the temperature collector 4 may be bonded to the electrical signal collector 6 through the insulating thermally conductive adhesive layer.

[0067] Since the first electrode 2113 and the second electrode 2114 of the single cell 211 are arranged at the same end of the single cell 211, the area of ​​the end of the single cell 211 that needs to be electrically connected is relatively large. The temperature collector 4 and the electric signal collection unit 6 are stacked and arranged to reduce the area of ​​the connection between the temperature collector 4 and the end face 2112 of the single cell 211, which is convenient for circuit setting and layout. In addition, the electric signal collection unit 6 also has current passing through it and will also generate heat; the electric signal collection unit 6 is a metal sheet with good thermal conductivity; the electric signal collection unit 6 is connected to the end face 2112 of the single cell 211 by welding, and the connection is relatively tight; therefore, the temperature of the electric signal collection unit 6 is substantially the same as the temperature of the end face 2112 of the single cell 211, which will not affect the accuracy of the temperature signal collected by the temperature collector 4.

[0068] Of course, in some other exemplary embodiments of the present disclosure, the temperature collector 4 may be disposed on a side of the electrical signal collecting unit 6 close to the single battery 211 .

[0069] The temperature collector 4 is electrically connected to the second wire 72 and the third wire 73. Specifically, the temperature collector 4 has two terminals, one terminal is connected to the second wire 72, and the other terminal is connected to the third wire 73. The temperature signal collected by the temperature collector 4 can be transmitted through the second wire 72 and the third wire 73.

[0070] Reference Figure 1 and Figure 2 As shown, a protective frame 8 is also provided on the periphery of the temperature collector 4. The height of the protective frame 8 is higher than the height of the temperature collector 4. The protective frame 8 can protect the temperature collector 4 to prevent the temperature collector 4 from being squeezed, deformed and failing.

[0071] The "parallel" and "perpendicular" mentioned in this application can not only be completely parallel or perpendicular, but also can have a certain error; for example, if the angle between the two is greater than or equal to 0° and less than or equal to 5°, the two are considered to be parallel to each other; if the angle between the two is greater than or equal to 85° and less than or equal to 95°, the two are considered to be perpendicular to each other.

[0072] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A battery device, characterized in that: include: A battery column, comprising at least two single batteries arranged in sequence along a first direction, wherein the single batteries have a side surface and an end surface, and the side surface is arranged to intersect with the end surface; a heat exchange plate, arranged at one side of the battery array, the heat exchange plate extending along the first direction and in thermal contact with a portion of the side surfaces of at least two of the single batteries, so that the end surface includes a first portion and a second portion, and the first portion is closer to the heat exchange plate than the second portion; The temperature collector is arranged in the second part.

2. The battery device according to claim 1, characterized in that: In the second direction, the minimum distance between the temperature collector and the heat exchange plate is greater than or equal to 13 mm and less than or equal to 46 mm. The second direction is parallel to the end surface and intersects with the first direction.

3. The battery device according to claim 1, characterized in that: The battery device further comprises: A conductive bar is connected to the end surface of the single cell. The temperature collector is located on a side of the conductive bar away from the heat exchange plate.

4. The battery device according to claim 3, characterized in that: In the second direction, the minimum distance between the conductive bar and the temperature collector is greater than or equal to 2 mm and less than or equal to 14 mm. The second direction is parallel to the end surface and intersects with the first direction.

5. The battery device according to claim 3, characterized in that: The battery device further comprises: The electrical signal collecting part is electrically connected to the second part or the conductive bar, and the temperature collector and the electrical signal collecting part are stacked.

6. The battery device according to claim 5, characterized in that: The temperature collector is arranged on a side of the electrical signal collecting portion away from the single battery.

7. The battery device according to claim 5, characterized in that: The battery device further comprises: The insulating heat-conducting adhesive layer is bonded between the temperature collector and the electrical signal collecting part.

8. The battery device according to claim 5, characterized in that: The battery device further comprises: A circuit board is arranged on a side of the end surface away from the single battery, the circuit board includes a first wire, a second wire and a third wire, the electrical signal acquisition unit is connected to the circuit board and is electrically connected to the first wire, and the temperature collector is electrically connected to the second wire and the third wire.

9. The battery device according to claim 5, characterized in that: The electrical signal collecting part is a metal sheet.

10. The battery device according to any one of claims 1 to 8, characterized in that: The single cell is a cylindrical cell having a first electrode and a second electrode, wherein the first electrode and the second electrode are arranged at the same end of the single cell.

11. The battery device according to any one of claims 1 to 8, characterized in that: The battery device comprises: The battery pack comprises two battery columns, and the heat exchange plate is arranged between the two battery columns.

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