Battery, battery module and electric equipment

Abstract

The utility model provides a battery, a battery module and electric equipment, and relates to the technical field of batteries, the battery comprises a shell assembly, a battery cell and an electrode assembly, a containing cavity is defined by the shell assembly, the shell assembly is provided with a heat dissipation pipeline, and the containing cavity is located in the circumferential direction of the heat dissipation pipeline; the battery cell is arranged in the accommodating cavity; the electrode assembly comprises a first electrode piece and a second electrode piece, the first electrode piece and the second electrode piece have opposite polarities, the first electrode piece and the second electrode piece are respectively connected with the battery cell, and the first electrode piece and the second electrode piece are both located at the same end of the shell assembly. The heat dissipation pipeline disclosed by the utility model is used for cooling and dissipating heat of the battery cell and improving the heat dissipation effect, so that the service life of the battery is further prolonged, a plurality of batteries are convenient to assemble and connect, the space utilization rate is high, the number of connecting pieces between the batteries is reduced, the reliability of battery connection is improved, and the overall safety performance of the battery is improved.

Description

Technical Field

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

[0002] A battery refers to a cup, trough or other container or part of the space of a composite container containing an electrolyte solution and metal electrodes to generate current, and is a device that can convert chemical energy into electrical energy. Heat is generated during the charging and discharging process of the battery. If the heat cannot be dissipated in time, it may cause the battery temperature to be too high, affecting the battery performance and reducing the service life of the battery. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a battery, a battery module and an electrical device, which are used for cooling and dissipating heat of the battery cells, with high space utilization rate, reducing the number of connecting parts between the batteries, and increasing the reliability of the battery connection.

[0004] The first aspect of the utility model provides a battery, which includes a housing assembly, battery cells and an electrode assembly.

[0005] The housing assembly defines an accommodation cavity, and the housing assembly is provided with a heat dissipation pipeline, and the accommodation cavity is located in the circumferential direction of the heat dissipation pipeline;

[0006] The battery cells are arranged in the accommodation cavity;

[0007] The electrode assembly includes a first electrode member and a second electrode member, the first electrode member and the second electrode member have opposite polarities, the first electrode member and the second electrode member are respectively connected to the battery cells, and both the first electrode member and the second electrode member are located at the same end of the housing assembly.

[0008] In a possible embodiment of the utility model, the heat dissipation pipeline is arranged at the central position of the housing assembly along the first direction.

[0009] In a possible embodiment of the utility model, the heat dissipation pipeline includes a first opening and a second opening, the first opening and the second opening are respectively arranged at opposite ends of the heat dissipation pipeline along the first direction, and the first opening is located at one end of the housing assembly close to the electrode assembly.

[0010] In a possible embodiment of the utility model, the battery further includes at least two current collectors, one current collector abuts between the first electrode member and the battery cells, and the other current collector abuts between the second electrode member and the battery cells.

[0011] In a possible embodiment of the present utility model, the housing assembly includes a housing and a cover body. The housing is connected to the cover body and cooperates to form a first mounting hole and a second mounting hole. The first electrode member passes through the first mounting hole, and the second electrode member passes through the second mounting hole.

[0012] In a possible embodiment of the present utility model, the first electrode member is snap-fitted with the inner wall of the first mounting hole, and the second electrode member is snap-fitted with the inner wall of the second mounting hole.

[0013] In a possible embodiment of the present utility model, the battery cell is a wound battery cell.

[0014] In a possible embodiment of the present utility model, the heat dissipation pipe is a liquid-cooling pipe or an air-cooling pipe.

[0015] The second aspect of the present utility model provides a battery module, which includes a plurality of batteries as described in any one of the above embodiments. The plurality of batteries are connected to enable the plurality of heat dissipation pipes to jointly form a heat dissipation channel.

[0016] The third aspect of the present utility model provides an electrical device, which includes the battery module as described in any one of the above embodiments.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: A battery, a battery pack and an electrical device provided by the present utility model improve the battery structure. The housing assembly is provided with a heat dissipation pipe. The battery cell generates heat during use, and the heat dissipation pipe is used to cool down the battery cell. The accommodation cavity is located in the circumferential direction of the heat dissipation pipe so that the heat dissipation pipe can have a large contact area with the accommodation cavity, improving the heat dissipation effect, thereby extending the service life of the battery. The first electrode member and the second electrode member are used to connect the battery to the external circuit and the battery cell so that the current in the battery is evenly distributed. The first electrode member and the second electrode member are located at the same end of the housing assembly, which is convenient for assembling and connecting a plurality of batteries, with high space utilization rate, reducing the number of connecting parts between the batteries, increasing the reliability of the battery connection, and improving the overall safety performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic side view of the battery provided in some embodiments of the present utility model;

[0020] Figure 2 A top view structural schematic diagram of the battery provided in some embodiments of the present utility model;

[0021] Figure 3 Shows Figure 1 A partial structural schematic diagram of part A in

[0022] Description of main component symbols;

[0023] 100 - Battery; 110 - Outer shell assembly; 111 - Accommodation cavity; 112 - Heat dissipation duct; 113 - Housing; 114 - Cover; 115 - First mounting hole; 116 - Second mounting hole; 1121 - First opening; 1122 - Second opening; 120 - Electric core; 130 - Electrode assembly; 131 - First electrode member; 132 - Second electrode member; 133 - Card slot; 140 - Current collector; 150 - Explosion-proof valve; 160 - Liquid injection hole. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0026] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model 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 construed as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] The following will describe in detail some embodiments of the present utility model with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0031] Embodiment 1

[0032] Reference Figure 1 As shown, an embodiment of the present application provides a battery 100, which includes a housing assembly 110, a battery cell 120, and an electrode assembly 130.

[0033] Specifically, in combination with Figure 1 and Figure 2As shown, the housing assembly 110 defines a receiving cavity 111, and the housing assembly 110 is provided with a heat dissipation duct 112. The receiving cavity 111 is located circumferentially of the heat dissipation duct 112. The battery cell 120 is disposed in the receiving cavity 111. The electrode assembly 130 includes a first electrode member 131 and a second electrode member 132. The first electrode member 131 and the second electrode member 132 have opposite polarities. The first electrode member 131 and the second electrode member 132 are respectively connected to the battery cell 120, and both the first electrode member 131 and the second electrode member 132 are located at the same end of the housing assembly 110. The housing assembly 110 is provided with a heat dissipation duct 112. During the use of the battery cell 120, heat will be generated. The heat dissipation duct 112 is used to cool and dissipate heat from the battery cell 120. The receiving cavity 111 is located circumferentially of the heat dissipation duct 112, so that the heat dissipation duct 112 can have a larger contact area with the receiving cavity 111, improving the heat dissipation effect, and thus extending the service life of the battery 100. The first electrode member 131 and the second electrode member 132 are used to connect the battery 100 to an external circuit and the battery cell 120, so that the current in the battery 100 is evenly distributed. The first electrode member 131 and the second electrode member 132 are located at the same end of the housing assembly 110, which is convenient for assembling and connecting multiple batteries 100, with high space utilization rate, reducing the number of connecting parts between the connections of the batteries 100, and increasing the reliability of the connections of the batteries 100.

[0034] It can be understood that one of the first electrode member 131 and the second electrode member 132 is the positive electrode and the other is the negative electrode. The electrodes are used to cause an electrochemical reaction inside the battery 100, facilitating the conduction of electrons. And the first electrode member 131 and the second electrode member 132 are located at the same end of the housing assembly 110, so as to connect multiple batteries 100 according to requirements, with a better connection effect.

[0035] Reference Figure 1 As shown, the battery 100 has a first direction. Exemplarily, the first direction is taken as the height direction of the battery 100. It can be understood that the above definition is only for facilitating the understanding of the relative positional relationship of each part in the battery 100, and should not be construed as a limitation to the present application.

[0036] In one embodiment, optionally, reference Figure 1 and Figure 2As shown, the heat dissipation pipe 112 is arranged at the center position of the outer shell component 110 along the first direction, that is, the center position of the outer shell component 110 is the heat dissipation pipe 112, and the heat dissipation pipe 112 is arranged along the axial direction of the outer shell component 110. The battery 100 will generate heat during the charging and discharging process, which will cause the temperature of the battery cell 120 to be too high. The heat dissipation pipe 112 can dissipate heat for the battery cell 120 in the outer shell component 110 to ensure the performance of the battery 100 and extend the life of the battery 100.

[0037] Alternatively, if Figure 1 As shown, the heat dissipation pipe 112 includes a first opening 1121 and a second opening 1122. The first opening 1121 and the second opening 1122 are respectively arranged at opposite ends of the heat dissipation pipe 112 along a first direction. The first opening 1121 is located at one end of the shell assembly 110 close to the electrode assembly 130. Accordingly, the first opening 1121 and the second opening 1122 in the heat dissipation pipe 112 facilitate the flow of the heat dissipation medium, and the heat dissipation pipes 112 of multiple batteries 100 can correspond to and be connected through the first opening 1121 and the second opening 1122 to ensure the heat dissipation effect of the heat dissipation pipe 112.

[0038] In one embodiment, optionally, the battery 100 further includes at least two current collectors 140, one of the current collectors 140 abuts between the first electrode member 131 and the battery cell 120, and the other current collector 140 abuts between the second electrode member 132 and the battery cell 120, and the current collectors 140 collect and conduct current, so that the current is conducted between the battery cell 120 and the first electrode member 131, or the current is conducted between the battery cell 120 and the second electrode member 132.

[0039] Based on any of the above embodiments, the battery cell 120 is a wound battery cell 120 , which is a wound battery cell 120 that precisely rolls the positive electrode sheet and the negative electrode sheet (with a separator in between) together to form a compact battery cell 120 roll and encapsulates it.

[0040] Based on any of the above embodiments, the heat dissipation pipe 112 is a liquid cooling pipe or an air cooling pipe. The liquid cooling pipe circulates the coolant in the heat dissipation pipe 112 to absorb and take away the heat generated by the heat cell 120, thereby improving the heat exchange efficiency and ensuring that the battery 100 operates within a safe temperature range. The air cooling pipe drives air through the air cooling pipe through a fan, accelerates air circulation, enhances the convective heat exchange effect, exchanges heat at the battery cell 120, and uses air as a cooling medium to take away the heat.

[0041] In summary, the housing assembly 110 of the battery 100 is provided with a heat dissipation duct 112. During the use of the battery cell 120, heat is generated. The heat dissipation duct 112 is used to cool down the battery cell 120. The accommodation cavity 111 is located in the circumferential direction of the heat dissipation duct 112, so that the heat dissipation duct 112 can have a large contact area with the accommodation cavity 111, improving the heat dissipation effect, thereby extending the service life of the battery 100. The first electrode member 131 and the second electrode member 132 are used to connect the battery 100 to an external circuit and the battery cell 120, so that the current in the battery 100 is evenly distributed. The first electrode member 131 and the second electrode member 132 are located at the same end of the housing assembly 110, which is convenient for assembling and connecting multiple batteries 100, with high space utilization rate, reducing the number of connecting parts between the batteries 100, increasing the reliability of the connection of the batteries 100, and improving the overall safety performance of the battery 100.

[0042] Embodiment 2

[0043] Reference Figures 1 to 3 As shown, an embodiment of the present application provides another battery 100, which includes a housing assembly 110, a battery cell 120, and an electrode assembly 130.

[0044] Specifically, with reference to Figure 1 and Figure 2 as shown, the housing assembly 110 defines an accommodation cavity 111, and the housing assembly 110 is provided with a heat dissipation duct 112. The accommodation cavity 111 is located in the circumferential direction of the heat dissipation duct 112. The battery cell 120 is disposed in the accommodation cavity 111. The housing assembly 110 is provided with a heat dissipation duct 112. During the use of the battery cell 120, heat is generated. The heat dissipation duct 112 is used to cool down the battery cell 120.

[0045] In this embodiment, the electrode assembly 130 includes a first electrode member 131 and a second electrode member 132. The first electrode member 131 and the second electrode member 132 have opposite polarities. The first electrode member 131 and the second electrode member 132 are respectively connected to the battery cell 120, and both the first electrode member 131 and the second electrode member 132 are located at the same end of the housing assembly 110. The accommodation cavity 111 is located in the circumferential direction of the heat dissipation duct 112, so that the heat dissipation duct 112 can have a large contact area with the accommodation cavity 111, improving the heat dissipation effect, thereby extending the service life of the battery 100. The first electrode member 131 and the second electrode member 132 are used to connect the battery 100 to an external circuit and the battery cell 120, so that the current in the battery 100 is evenly distributed. The first electrode member 131 and the second electrode member 132 are located at the same end of the housing assembly 110, which is convenient for assembling and connecting multiple batteries 100, with high space utilization rate, reducing the number of connecting parts between the batteries 100, and increasing the reliability of the connection of the batteries 100.

[0046] Reference Figure 1 As shown, the battery 100 has a first direction. Exemplarily, the first direction is taken as the height direction of the battery 100.

[0047] In one embodiment, optionally, reference Figure 1 and Figure 2 As shown, along the first direction, the heat dissipation duct 112 is disposed at the central position of the housing assembly 110, that is, the central position of the housing assembly 110 is the heat dissipation duct 112, and the heat dissipation duct 112 is arranged along the axial direction of the housing assembly 110. During the charging and discharging process of the battery 100, heat is generated, which may cause the temperature at the position of the battery cell 120 to be too high. The heat dissipation duct 112 can dissipate heat from the battery cell 120 in the housing assembly 110 to ensure the performance of the battery 100 and extend the life of the battery 100. Exemplarily, the housing assembly 110 is of a cylindrical structure, and the heat dissipation duct 112 is of a cylindrical hollow structure.

[0048] Optionally, as Figure 1 shown, the heat dissipation duct 112 includes a first opening 1121 and a second opening 1122. Along the first direction, the first opening 1121 and the second opening 1122 are respectively disposed at opposite ends of the heat dissipation duct 112. The first opening 1121 is located at one end of the housing assembly 110 close to the electrode assembly 130. Correspondingly, the first opening 1121 and the second opening 1122 in the heat dissipation duct 112 facilitate the flow of the heat dissipation medium, and the heat dissipation ducts 112 of multiple batteries 100 can be correspondingly connected through the first opening 1121 and the second opening 1122 to ensure the heat dissipation effect of the heat dissipation duct 112.

[0049] In one embodiment, optionally, the battery 100 further includes at least two current collectors 140. One current collector 140 abuts between the first electrode member 131 and the battery cell 120, and the other current collector 140 abuts between the second electrode member 132 and the battery cell 120. The current collector 140 functions to collect and conduct current, enabling the current to conduct between the battery cell 120 and the first electrode member 131, or enabling the current to conduct between the battery cell 120 and the second electrode member 132. Additionally, the current collector 140 can be in close contact with the first electrode member 131 or the second electrode member 132 to ensure efficient charge transfer to the external circuit.

[0050] Based on any of the above embodiments, please refer to Figure 1 and Figure 3, the housing assembly 110 includes a housing 113 and a cover 114. The housing 113 is connected to the cover 114 and cooperates to form a first mounting hole 115 and a second mounting hole 116. The first electrode member 131 passes through the first mounting hole 115, and the second electrode member 132 passes through the second mounting hole 116. In other words, the first mounting hole 115 is used to mount the first electrode member 131, and the second mounting hole 116 is used to mount the second electrode member 132. Exemplarily, the heat dissipation pipe 112 is located between the first mounting hole 115 and the second mounting hole 116. Exemplarily, both the housing 113 and the cover 114 are made of aluminum material.

[0051] Optionally, the first electrode member 131 is clamped with the hole wall of the first mounting hole 115, and the second electrode member 132 is clamped with the hole wall of the second mounting hole 116. The hole wall of the first mounting hole 115 is used to fix and limit the first electrode member 131, and the hole wall of the second mounting hole 116 is used to fix and limit the second electrode member 132. Exemplarily, a clamping groove 133 is provided on the first electrode member 131 or the second electrode member 132. The first electrode member 131 is clamped with the hole wall of the first mounting hole 115 through the clamping groove 133, and the second electrode member 132 is clamped with the hole wall of the second mounting hole 116 through the clamping groove 133.

[0052] In this application, at least a part of the first electrode member 131 or the second electrode member 132 is exposed outside the housing assembly 110.

[0053] Optionally, as Figure 2 shown, the battery 100 further includes an explosion-proof valve 150. The explosion-proof valve 150 penetrates through the cover 114, and the gas of the battery core 120 can flow through the explosion-proof valve 150 and be discharged, avoiding the explosion of the battery 100 due to the abnormal discharge of the gas in the battery 100, and improving the safety performance of the battery 100. Exemplarily, the explosion-proof valve 150 and the electrode assembly 130 are located at the same end of the housing assembly 110.

[0054] Optionally, as Figure 2 shown, the battery 100 further includes a liquid injection hole 160. The liquid injection hole 160 is used to inject electrolyte into the battery 100. After the injection is completed, the liquid injection hole 160 needs to be sealed to prevent electrolyte leakage and maintain an oxygen-free environment inside the battery 100. Exemplarily, after the wound battery core 120 is encapsulated, electrolyte is injected through the liquid injection hole 160 to facilitate the more accurate control of the electrolyte dosage.

[0055] Based on any of the above embodiments, the battery core 120 is a wound battery core 120, and the wound battery core 120 is formed by precisely winding a positive electrode sheet and a negative electrode sheet (with a separator in the middle) together to form a tight battery core roll core and encapsulating it.

[0056] Based on any of the above embodiments, the heat dissipation pipe 112 is a liquid-cooling pipe or an air-cooling pipe. The liquid-cooling pipe circulates coolant in the heat dissipation pipe 112 to absorb and carry away the heat generated at the position of the battery cell 120, thereby improving the heat exchange efficiency and ensuring that the battery 100 operates within a safe temperature range. The air-cooling pipe drives air to flow through the air-cooling pipe by a fan to accelerate air circulation and enhance the convective heat transfer effect.

[0057] Embodiment 3

[0058] An embodiment of the present invention further provides a battery module, which includes the battery 100 in Embodiment 1 or Embodiment 2. A plurality of the batteries 100 are connected so that a plurality of the heat dissipation pipes 112 can jointly form a heat dissipation channel. The battery module including the battery 100 has all the beneficial effects of the battery 100, which will not be described in detail here.

[0059] Embodiment 4

[0060] An embodiment of the present invention further provides an electrical device. The electrical device can be various electrical devices using the battery 100 as a power source or various energy storage systems using the battery 100 as an energy storage element, specifically but not limited to mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric vehicles, ships, spacecrafts, energy storage power stations, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc. The spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc. The electrical device includes the battery module in Embodiment 3. The electrical device including the battery module has all the beneficial effects of the battery module, which will not be described in detail here.

[0061] In all the examples shown and described here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0062] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. A battery, characterized in that, Comprising: A housing assembly that defines a receiving cavity, and the housing assembly is provided with a heat dissipation duct, and the receiving cavity is located circumferentially of the heat dissipation duct; A battery cell disposed within the receiving cavity; An electrode assembly including a first electrode member and a second electrode member, the first electrode member and the second electrode member having opposite polarities, the first electrode member and the second electrode member being respectively connected to the battery cell, and both the first electrode member and the second electrode member being located at the same end of the housing assembly.

2. The battery according to claim 1, wherein The heat dissipation duct is disposed at the central position of the housing assembly along a first direction.

3. The battery according to claim 2, wherein, The heat dissipation duct includes a first opening and a second opening, and along the first direction, the first opening and the second opening are respectively disposed at opposite ends of the heat dissipation duct, and the first opening is located at an end of the housing assembly close to the electrode assembly.

4. The battery according to claim 1, wherein It further includes at least two current collectors, one current collector abuts between the first electrode member and the battery cell, and the other current collector abuts between the second electrode member and the battery cell.

5. The battery according to claim 1, characterized in that, The housing assembly includes a housing and a cover, the housing and the cover are connected and cooperate to form a first mounting hole and a second mounting hole, the first electrode member passes through the first mounting hole, and the second electrode member passes through the second mounting hole.

6. The battery according to claim 5, characterized in that, The first electrode member is snap-fitted with the hole wall of the first mounting hole, and the second electrode member is snap-fitted with the hole wall of the second mounting hole.

7. The battery according to any one of claims 1 to 6, characterized in that, The battery cell is a wound battery cell.

8. The battery according to any one of claims 1 to 6, characterized in that, The heat dissipation duct is a liquid cooling duct or an air cooling duct.

9. A battery module, characterized in that, It includes a plurality of batteries according to any one of claims 1 to 8, and the plurality of batteries are connected so that the plurality of heat dissipation ducts can jointly form a heat dissipation channel.

10. An electrical device, characterized in that, It includes the battery module according to claim 9.

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