Battery and electric device

Abstract

The utility model relates to the technical field of batteries, and provides a battery and an electric device. The battery comprises: a battery cell; the heat exchange plate is arranged above the battery monomers, and a heat exchange medium circularly flows in the heat exchange plate; the bottom of the heat pipe is in heat-conducting connection with at least the side part of the battery monomer, and the heat pipe is in heat-conducting contact with the heat exchange plate. According to the technical scheme, the heat exchange efficiency of the battery monomers can be improved, so that the use stability and reliability of the battery are improved.

Description

Technical Field

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

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] At present, with the rapid development of new energy vehicles, the demand for high energy density and high power density batteries is increasing, which also leads to higher and higher requirements for battery thermal management.

[0004] In the related art, the heat dissipation method of conventional batteries is mainly to set a water cooling plate at the bottom of the battery cell and use the bottom water cooling plate to dissipate heat from the battery cell. This method has limitations such as small heat dissipation area and large temperature difference between cells, and it is difficult to meet the heat dissipation requirements of battery cells with higher energy density batteries in the future. Utility Model Content

[0005] In view of the above problems, the purpose of this application is to provide a battery and an electrical device to improve the heat exchange efficiency of battery cells. This purpose is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a battery, comprising: a battery cell; a heat exchange plate, arranged above the battery cell, in which a heat exchange medium circulates; a heat pipe, wherein the bottom of the heat pipe is thermally connected to the side of the battery cell, and the top of the heat pipe is in thermal contact with the heat exchange plate.

[0007] In the technical solution of the present embodiment, a heat exchange plate is arranged above the battery cell, and a heat pipe is arranged on the side of the battery cell, the bottom of the heat pipe is thermally connected to the battery cell, and the top is in thermal contact with the heat exchange plate. In this way, since the heat pipe has good thermal conductivity, the heat generated by the battery cell can be transferred to the bottom of the heat pipe first, and the heat exchange medium at the bottom of the heat pipe is heated to evaporate from liquid to gas and move to the top. Since the top of the heat pipe is in thermal contact with the heat exchange plate and the heat exchange medium circulates in the heat exchange plate, it can exchange heat with the top of the heat pipe. The heat exchange medium at the top of the heat pipe is cooled to change from gas to liquid and flows to the bottom under the action of gravity. The battery cell is dissipated heat cyclically in this way, which effectively improves the heat dissipation efficiency of the battery cell, thereby improving the stability and reliability of battery use.

[0008] In addition, the battery provided in this application may also have the following additional technical features:

[0009] In some embodiments of the present application, the heat exchange plate is provided with a first plug-in slot, and the top of the heat pipe is inserted into the first plug-in slot.

[0010] By providing a first plug-in groove on the heat exchange plate that is adapted to the cross-sectional size of the heat pipe, the top of the heat pipe is plugged into the first plug-in groove, so that it can make thermal contact with the heat exchange plate, thereby improving the reliability and stability of the heat pipe installation and fixation, thereby helping to improve the stability of heat exchange of the battery cell.

[0011] In some embodiments of the present application, a heat insulation plate is provided between the heat exchange plate and the battery cell, the heat insulation plate is provided with a second plug-in slot corresponding to and connected to the first plug-in slot, and the top of the heat pipe is sequentially inserted into the second plug-in slot and the first plug-in slot.

[0012] By arranging a heat insulation plate between the heat exchange plate and the battery cell, the heat insulation plate can reduce the direct heat exchange between the battery cell and the heat exchange plate, and when the heat pipe passes through the second plug-in slot on the heat insulation plate and is plugged into the heat exchange plate, the heat insulation plate can separate the top and bottom of the heat pipe, which helps to improve the state conversion of the heat exchange medium in the heat pipe, thereby improving the thermal conductivity efficiency of the heat pipe.

[0013] In some embodiments of the present application, a heat conducting member is provided on a side of the battery cell, and the heat pipe is thermally connected to the battery cell via the heat conducting member.

[0014] The heat pipe is thermally connected to the battery cell via a heat conductive member, and the size of the heat conductive member can be larger than the heat pipe, thereby increasing the heat conduction area with the battery cell, which in turn helps to further improve the heat conduction efficiency between the battery cell and the heat pipe.

[0015] In some embodiments of the present application, there are multiple battery cells, each of the battery cells is configured with multiple heat pipes, and the multiple heat pipes are thermally connected to the battery cells through the heat conductive member.

[0016] The number of heat pipes configured for each battery cell is increased, and the heat conduction area of ​​each battery cell is increased, which helps to further improve the heat dissipation efficiency of the battery cell.

[0017] In some embodiments of the present application, the battery cell includes multiple surfaces, the multiple surfaces include a first surface with the largest area, the heat conductive member is a plate, and the plate surface of the heat conductive member is thermally connected to the first surface.

[0018] The heat conducting member is heat-conductingly connected to the first surface of the battery cell with the largest area, so that the heat conduction is faster per unit time, thereby helping to improve the heat conduction efficiency between the battery cell and the heat pipe.

[0019] In some embodiments of the present application, the battery further includes a box having a receiving cavity, and the battery cell, the heat exchange plate and the heat pipe are all received in the receiving cavity.

[0020] By accommodating the battery cells, heat exchange plates and heat pipes in the accommodating cavity, the box body not only plays a protective role, but also makes it easy for the battery to be installed on the electrical device through the box body.

[0021] In some embodiments of the present application, the box body includes a lower box body and an upper cover arranged above the lower box body, and the accommodating cavity is defined between the lower box body and the upper cover; wherein the heat exchange plate is arranged between the battery cell and the upper cover, and the battery cell has a pressure relief mechanism, and the pressure relief mechanism is arranged toward the lower box body.

[0022] The heat exchange plate is located above the battery cell, so that the gaseous heat exchange medium at the bottom of the heat pipe rises to the top, exchanges heat with the heat exchange plate and becomes liquid, and flows back to the bottom of the heat pipe under the action of gravity, thereby realizing the circulation heat dissipation of the battery cell. In addition, the pressure relief mechanism of the battery cell is set toward the lower box, which can reduce the risk of the pressure relief material spraying upward into the cab of an electric device such as a vehicle, which helps to improve the safety of the battery during use.

[0023] In some embodiments of the present application, the battery further includes a fireproof plate, and the fireproof plate is disposed between the battery cell and the lower box body.

[0024] Since the pressure relief mechanism of the battery cell is arranged toward the lower box body, a fireproof plate is arranged between the battery cell and the lower box body, and the fireproof plate plays a fire-blocking role, thereby reducing the risk of battery fire caused by the pressure relief material discharged by the pressure relief mechanism.

[0025] In some embodiments of the present application, the heat pipe is a gravity heat pipe, the top of the gravity heat pipe is configured as a condensation section, and the bottom of the heat pipe is configured as an evaporation section.

[0026] Gravity heat pipes can use the principle of heat conduction and the property of rapid heat transfer with a medium with a temperature difference to transfer the heat of an object to the other end through the heat pipe. When the evaporation end of the heat pipe is heated, the working fluid absorbs heat and turns into steam. The steam carries the heat to the condensation section, releases heat in the condensation section, and condenses into liquid. The liquid returns to the evaporation section, and the heat is transferred back and forth in this way.

[0027] In a second aspect, the present application provides an electrical device, comprising a battery as described in any one of the embodiments of the first aspect, wherein the battery is used to power the electrical device.

[0028] According to the electrical device provided in the present application, since it includes the battery described in any one of the embodiments of the first aspect, it has the technical effects of any of the above embodiments, which will not be described in detail here.

[0029] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A schematic structural diagram of a battery from one perspective provided in some embodiments of the present application;

[0032] Figure 2 A schematic diagram of a partial structure of a battery from another perspective provided in some embodiments of the present application;

[0033] Figure 3 A schematic diagram of the assembly structure of heat pipes, heat exchange plates and heat insulation plates provided in some embodiments of the present application.

[0034] The reference numerals are as follows:

[0035] 100. Battery;

[0036] 10. Battery cell; 11. Pressure relief mechanism;

[0037] 20. heat exchange plate; 21. first plug-in slot;

[0038] 30. Heat pipe;

[0039] 40. Heat insulation board;

[0040] 50. Lower box;

[0041] 60. Fireproof board. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0044] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0045] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: 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 associated objects before and after are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0048] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0049] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0051] In the related art, the heat dissipation method of conventional batteries is mainly to set a water cooling plate at the bottom of the battery cell and use the bottom water cooling plate to dissipate heat for the battery cell. This method has limitations such as small heat dissipation area and large temperature difference between cells. It is difficult to meet the heat dissipation requirements of battery cells with higher energy density batteries in the future. In addition, since there are many water cooling pipes connected to the water cooling plate, the connection and sealing requirements of the pipes are difficult to guarantee, and there is a high risk of leakage of the heat exchange medium, which greatly affects the safety of the vehicle.

[0052] In order to solve the problem of low heat dissipation efficiency when using a bottom water cooling plate to dissipate heat from battery cells, the present application designs a battery, by arranging a heat exchange plate above multiple battery cells and providing a heat pipe on the side of each battery cell, the bottom of the heat pipe is thermally connected to the battery cell, and the top is thermally contacted with the heat exchange plate, so that the heat pipe can be used to transfer the heat generated by the battery cell to the heat exchange plate for heat exchange. The heat pipe has good thermal conductivity, which effectively improves the heat exchange efficiency of the battery cell.

[0053] The battery 100 disclosed in the embodiment of the present application is suitable for use in electrical devices such as electric vehicles, ships, and aircraft, and is used to supply power to the electrical devices.

[0054] See also Figure 1 and Figure 2 , Figure 1 A schematic structural diagram of a battery from one perspective provided in some embodiments of the present application; Figure 2A schematic diagram of a partial structure of a battery from another perspective provided in some embodiments of the present application. The present application provides a battery 100, including a battery cell 10, a heat exchange plate 20 and a heat pipe 30. The heat exchange plate 20 is arranged above the battery cell 10, and a heat exchange medium circulates in the heat exchange plate 20; the bottom of the heat pipe 30 is thermally connected to the side of the battery cell 10, and the top of the heat pipe 30 is in thermal contact with the heat exchange plate 20.

[0055] In this embodiment, there are a plurality of battery cells 10 , and each battery cell 10 is configured with at least one heat pipe 30 .

[0056] Exemplarily, the heat exchange medium in the heat exchange plate 20 is water, coolant, heat exchange gas or other heat exchange medium.

[0057] It can be understood that the heat pipe 30 is a heat transfer element with extremely high thermal conductivity, which transfers heat through evaporation and condensation of liquid in a fully enclosed vacuum tube.

[0058] Exemplarily, the heat pipe 30 may be a flat tube or an arc-shaped tube, or a heat pipe plate.

[0059] By arranging the heat exchange plate 20 above the battery cell 10 and arranging the heat pipe 30 on the side of the battery cell 10, the bottom of the heat pipe 30 is thermally connected to the battery cell 10, and the top is in thermal contact with the heat exchange plate 20. In this way, since the heat pipe 30 has good thermal conductivity, the heat generated by the battery cell 10 can be first transferred to the bottom of the heat pipe 30, and the heat exchange medium at the bottom of the heat pipe 30 is heated and evaporates from liquid to gas and moves to the top thereof. Since the top of the heat pipe 30 is in thermal contact with the heat exchange plate 20 and the heat exchange medium circulates in the heat exchange plate 20, it can exchange heat with the top of the heat pipe 30. The heat exchange medium at the top of the heat pipe 30 is cooled and changes from gas to liquid and flows to the bottom under the action of gravity. In this way, the heat is cyclically dissipated from the battery cell 10, which effectively improves the heat dissipation efficiency of the battery cell 10, thereby improving the stability and reliability of the battery 100.

[0060] See also Figure 3 , Figure 3 Schematic diagram of the assembly structure of the heat pipe, heat exchange plate and heat insulation plate provided in some embodiments of the present application. According to some embodiments of the present application, the heat exchange plate 20 is provided with a first plug-in slot 21 , and the top of the heat pipe 30 is plugged into the first plug-in slot 21 .

[0061] In this embodiment, there are multiple battery cells 10 and heat pipes 30 , and multiple first plug-in slots 21 . Tops of the multiple heat pipes 30 are correspondingly plugged into the multiple first plug-in slots 21 and are in thermal contact with the heat exchange plate 20 .

[0062] By providing a first plugging groove 21 on the heat exchange plate 20 that is adapted to the cross-sectional size of the heat pipe 30, the top of the heat pipe 30 is plugged into the first plugging groove 21, so that it can be in thermal contact with the heat exchange plate 20, thereby improving the reliability and stability of the installation and fixation of the heat pipe 30, thereby helping to improve the stability of heat exchange for the battery cell 10.

[0063] According to some embodiments of the present application, a heat insulation plate 40 is provided between the heat exchange plate 20 and the battery cell 10, and the heat insulation plate 40 is provided with a second plug-in slot corresponding to and connected to the first plug-in slot 21, and the top of the heat pipe 30 is sequentially inserted into the second plug-in slot and the first plug-in slot 21.

[0064] In this embodiment, the heat insulating plate 40 covers the top of the plurality of battery cells 10. The number of the second plugging slots on the heat insulating plate 40 and the first plugging slots 21 on the heat exchange plate 20 are the same and are connected one by one.

[0065] By arranging a heat insulation plate 40 between the heat exchange plate 20 and the battery cell 10, the heat insulation plate 40 can reduce the direct heat exchange between the battery cell 10 and the heat exchange plate 20, and when the heat pipe 30 passes through the second plug-in groove on the heat insulation plate 40 and is plugged into the heat exchange plate 20, the heat insulation plate 40 can separate the top and bottom of the heat pipe 30, which helps to improve the state conversion of the heat exchange medium in the heat pipe 30, thereby improving the thermal conductivity efficiency of the heat pipe 30.

[0066] According to some embodiments of the present application, a heat conducting member is disposed on the side of the battery cell 10 , and the heat pipe 30 is thermally connected to the battery cell 10 via the heat conducting member.

[0067] In this embodiment, the heat conducting member can be a heat conducting member such as a heat conducting plate, a heat conducting block or a heat conducting adhesive. The heat conducting member is attached to the side of the battery cell 10 and is in thermal contact with the heat pipe 30. The heat conducting member can be in a flat plate shape or an arc shape to adapt to a square or cylindrical battery cell.

[0068] The heat pipe 30 is thermally connected to the battery cell 10 via a heat conductive member. The size of the heat conductive member can be larger than the heat pipe 30 , thereby increasing the heat conduction area with the battery cell 10 , which in turn helps to further improve the heat conduction efficiency between the battery cell 10 and the heat pipe 30 .

[0069] See also Figure 2 According to some embodiments of the present application, there are multiple battery cells 10, each battery cell 10 is configured with multiple heat pipes 30, and the multiple heat pipes 30 are thermally connected to the battery cells 10 through heat conductive members.

[0070] In this embodiment, the plurality of battery cells 10 are divided into a plurality of groups and arranged at intervals along a first direction, each group includes a plurality of battery cells 10 arranged at intervals along a second direction, and the second direction intersects the first direction.

[0071] Specifically, a plurality of heat pipes 30 arranged along a first direction are disposed between adjacent battery cells 10 .

[0072] The number of heat pipes 30 configured for each battery cell 10 is increased, and the heat conduction area of ​​each battery cell 10 is increased, which helps to further improve the heat dissipation efficiency of the battery cell 10 .

[0073] See also Figure 1 According to some embodiments of the present application, the battery 100 further includes a box body having a receiving cavity, and the battery cell 10, the heat exchange plate 20 and the heat pipe 30 are all received in the receiving cavity.

[0074] In this embodiment, by accommodating the battery cell 10, the heat exchange plate 20 and the heat pipe 30 in the accommodating cavity, the box body not only plays a protective role, but also facilitates the installation of the battery on the electrical device through the box body.

[0075] According to some embodiments of the present application, the battery cell 10 includes multiple surfaces, the multiple surfaces include a first surface with the largest area, the heat conductive member is a plate, and the plate surface of the heat conductive member is thermally connected to the first surface.

[0076] In this embodiment, the heat conducting member is heat-conductingly connected to the first surface of the battery cell 10 with the largest area, so that the heat conduction is faster per unit time, thereby helping to improve the heat conduction efficiency between the battery cell 10 and the heat pipe 30 .

[0077] According to some embodiments of the present application, the box body includes a lower box body 50 and an upper cover arranged above the lower box body 50, and an accommodating cavity is defined between the lower box body 50 and the upper cover; wherein, the heat exchange plate 20 is arranged between the battery cell 10 and the upper cover, and the battery cell 10 has a pressure relief mechanism 11, and the pressure relief mechanism 11 is arranged toward the lower box body 50.

[0078] In this embodiment, it can be understood that the battery cell 10 also has an output pole arranged toward the lower box body 50 , and the output pole and the pressure relief mechanism 11 of the battery cell 10 are both arranged toward the lower box body 50 , that is, the battery cell 10 is inverted in the box body.

[0079] The heat exchange plate 20 is located above the battery cell 10, so that the gaseous heat exchange medium at the bottom of the heat pipe 30 rises to the top, changes into liquid after heat exchange with the heat exchange plate 20, and flows back to the bottom of the heat pipe 30 under the action of gravity, thereby realizing the circulation heat dissipation of the battery cell 10. In addition, the pressure relief mechanism 11 of the battery cell 10 is arranged toward the lower box 50, thereby reducing the risk of the pressure relief material spraying upward into the cab of an electric device such as a vehicle, which helps to improve the safety of the battery during use.

[0080] See also Figure 1According to some embodiments of the present application, the battery 100 further includes a fireproof plate 60 , which is disposed between the battery cell 10 and the lower box body 50 .

[0081] In this embodiment, illustratively, the fireproof board 60 is a glass wool board, a cement board, or the like.

[0082] Since the pressure relief mechanism 11 of the battery cell 10 is arranged toward the lower box body 50, a fireproof plate 60 is arranged between the battery cell 10 and the lower box body 50 to provide a fire barrier, thereby reducing the risk of battery fire caused by the pressure relief material discharged by the pressure relief mechanism 11.

[0083] According to some embodiments of the present application, the heat pipe 30 is a gravity heat pipe, the top of the gravity heat pipe is configured as a condensation section, and the bottom of the heat pipe 30 is configured as an evaporation section.

[0084] In this embodiment, the gravity heat pipe (also called a thermosyphon) can utilize the principle of heat conduction and the property of rapid heat transfer with a medium with a temperature difference (such as a nanofluid) to transfer the heat of an object to the other end through the heat pipe 30. When the evaporation end of the heat pipe 30 is heated, the working fluid absorbs heat and is converted into steam, which carries heat to the condensation section, releases heat in the condensation section, and condenses into liquid, which then returns to the evaporation section in the liquid state, and the heat is transferred back and forth in this way.

[0085] According to some embodiments of the present application, see Figures 1 to 3The present application provides a battery, including a box body, a battery cell 10, a heat exchange plate 20, a heat insulation plate 40 and a gravity heat pipe. The box body includes a lower box body 50 and an upper cover, and a receiving cavity is defined between the lower box body 50 and the upper cover, and the battery cell 10, the heat exchange plate 20, the heat insulation plate 40 and the heat pipe 30 are all accommodated in the receiving cavity. There are multiple battery cells 10, the heat exchange plate 20 is located above the multiple battery cells 10, the heat insulation plate 40 is located between the heat exchange plate 20 and the multiple battery cells 10, the heat exchange plate 20 is provided with a plurality of first plug-in slots 21, and the heat insulation plate 40 is provided with a plurality of second plug-in slots, and the plurality of second plug-in slots are connected to the plurality of first plug-in slots 21 in a one-to-one correspondence. Each battery cell 10 is configured with a plurality of gravity heat pipes, the bottom of the gravity heat pipe is thermally connected to each battery cell 10 through a heat conductive member, the top passes through the second plug-in slot to be plugged into the first plug-in slot 21, and is in thermal contact with the heat exchange plate 20. In this way, the heat generated by the battery cell 10 can be transferred to the bottom of the gravity heat pipe first, and the heat exchange medium at the bottom of the gravity heat pipe is heated to evaporate from liquid to gas and flow to the top thereof. Since the top of the gravity heat pipe is in thermal contact with the heat exchange plate 20 and the heat exchange medium circulates in the heat exchange plate 20, it can exchange heat with the top of the gravity heat pipe. The heat exchange medium at the top of the gravity heat pipe is cooled to change from gas to liquid and flow to the bottom under the action of gravity. In this way, the heat is dissipated cyclically for the battery cell 10, which effectively improves the heat dissipation efficiency of the battery cell 10, thereby improving the stability and reliability of battery use.

[0086] According to some embodiments of the present application, the present application further provides an electrical device, comprising a battery 100 as in any one of the embodiments of the first aspect, and the battery 100 is used to supply power to the electrical device.

[0087] The electric device provided by the present application may be, for example, a vehicle, a ship, an aircraft, an electric toy, etc. Since the battery 100 of any one of the first aspect embodiments is included, the technical effects of any of the above embodiments are obtained, which will not be described in detail.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: include: Battery cells; A heat exchange plate is disposed above the battery cell, and a heat exchange medium circulates in the heat exchange plate; A heat pipe, wherein the bottom of the heat pipe is thermally connected to at least the side of the battery cell, and the heat pipe is in thermal contact with the heat exchange plate.

2. The battery according to claim 1, characterized in that The heat exchange plate is provided with a first plug-in slot, and the top of the heat pipe is plugged into the first plug-in slot.

3. The battery according to claim 2, characterized in that A heat insulating plate is provided between the heat exchange plate and the battery cell, the heat insulating plate is provided with a second plugging slot correspondingly connected to the first plugging slot, and the top of the heat pipe is sequentially passed through the second plugging slot and the first plugging slot.

4. The battery according to any one of claims 1 to 3, characterized in that A heat conducting member is disposed on the side of the battery cell, and the heat pipe is thermally connected to the battery cell via the heat conducting member.

5. The battery according to claim 4, characterized in that There are a plurality of battery cells, each of which is provided with a plurality of heat pipes, and the plurality of heat pipes are thermally connected to the battery cells through the heat conducting member.

6. The battery according to claim 4, characterized in that The battery cell comprises a plurality of surfaces, the plurality of surfaces comprises a first surface having the largest area, the heat conducting member is a plate member, and the plate surface of the heat conducting member is heat-conductingly connected to the first surface.

7. The battery according to any one of claims 1 to 3, characterized in that The battery further comprises a box body having a containing cavity, and the battery cell, the heat exchange plate and the heat pipe are all contained in the containing cavity.

8. The battery according to claim 7, characterized in that The box body comprises a lower box body and an upper cover arranged above the lower box body, and the accommodating cavity is defined between the lower box body and the upper cover; Wherein, the heat exchange plate is arranged between the battery cell and the upper cover, the battery cell has a pressure relief mechanism, and the pressure relief mechanism is arranged toward the lower box body.

9. The battery according to claim 8, characterized in that The battery further comprises a fireproof plate, and the fireproof plate is arranged between the battery cell and the lower box body.

10. The battery according to any one of claims 1 to 3, characterized in that: The heat pipe is a gravity heat pipe, the top of the gravity heat pipe is configured as a condensation section, and the bottom of the heat pipe is configured as an evaporation section.

11. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 10, wherein the battery is used to supply power to the electrical device.

Images