Battery temperature control device, battery and electric device

Abstract

The utility model relates to a battery temperature control device and a battery, the battery temperature control device comprises a battery box body and a plurality of temperature equalizing plates, and a temperature control flow channel is formed in a box body frame. As the large surfaces of the single batteries are attached to the uniform-temperature plate, heat exchange between the single batteries and the uniform-temperature plate can be quickly realized. Moreover, the two ends of each temperature-uniforming plate are in contact with the box body frame, and the temperature control flow channel extends to the area where the box body frame is in contact with each temperature-uniforming plate, so that the temperature-uniforming plates can also exchange heat with the temperature control medium flowing through the temperature control flow channel. And the battery monomers can quickly exchange heat with the temperature control medium through the temperature equalizing plate, so that the temperature of the battery monomers is controlled. Moreover, the temperature control flow channel is integrated in the box body frame, so that the temperature control can be realized only by arranging a plurality of temperature equalizing plates in the accommodating cavity, and the occupied space is small. Therefore, the vast majority of space in the battery box body can be used for accommodating the battery monomers, so that the capacity of the battery is favorably improved. In addition, the utility model also provides an electric device.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and particularly relates to a battery temperature control device, a battery and an electric device. Background Art

[0002] As a core component for energy storage and conversion, batteries have been widely used in fields such as electric vehicles. The performance and lifespan of batteries are highly correlated with temperature, so batteries need to be maintained at an appropriate temperature during actual operation. Currently, a liquid cooling component is generally set to dissipate heat from the battery to quickly remove the heat generated during battery use. However, the common liquid cooling component has a relatively complex structure and a large volume, which will occupy more space inside the battery, thereby reducing the battery capacity. Summary of the Utility Model

[0003] Based on this, in view of the above problems, it is necessary to provide a battery temperature control device and a battery that help improve the battery capacity.

[0004] A battery temperature control device includes:

[0005] A battery box body having a containing cavity. The battery box body includes a box body frame extending along the circumference of the containing cavity, and a temperature control flow channel for circulating a temperature control medium is formed in the box body frame; and

[0006] A plurality of heat dissipation plates are received in the containing cavity, and both ends of each heat dissipation plate respectively extend to contact the box body frame. The plurality of heat dissipation plates are spaced apart in the containing cavity, and a battery slot for placing battery cells is formed between two adjacent heat dissipation plates;

[0007] Wherein, the temperature control flow channel extends to the area where the box body frame contacts each heat dissipation plate.

[0008] In one embodiment, the temperature control flow channel winds around the box body frame and extends along a spiral path.

[0009] In one embodiment, a cavity isolated from the temperature control flow channel is formed in the box body frame.

[0010] In one embodiment, a plurality of the cavities extend along the circumference of the box body frame, and the temperature control flow channel is distributed between the plurality of cavities.

[0011] In one embodiment, bent portions are formed at both ends of each heat dissipation plate, and the bent portions are in contact with the box body frame.

[0012] In one of the embodiments, L-shaped slots are formed at positions of the box frame corresponding to the plurality of temperature averaging plates, and the bent portions at both ends of each temperature averaging plate are retained in the L-shaped slots.

[0013] In one embodiment, the slot includes a first section extending along the box frame and a second section perpendicular to the first section, and both ends of the temperature equalizing plate extend into the second section and enable the bent portion to be clamped on the first section.

[0014] A battery comprises a plurality of battery cells and a battery temperature control device as described in any one of the preferred embodiments above, wherein the battery cells are accommodated in the battery slots, and a large surface of each of the battery cells is in contact with the adjacent temperature balancing plate.

[0015] In one of the embodiments, the large surface of each battery cell is bonded to the adjacent temperature averaging plate by means of heat-conducting adhesive.

[0016] The above-mentioned battery temperature control device and battery, since the large surface of the battery cell is in contact with the temperature equalizing plate, the battery cell can quickly exchange heat with the temperature equalizing plate. Moreover, the two ends of the temperature equalizing plate are in contact with the box frame, and the temperature control flow channel extends to the area where the box frame is in contact with each temperature equalizing plate, so the temperature equalizing plate can also exchange heat with the temperature control medium flowing through the temperature control flow channel. As the temperature control medium circulates continuously, the battery cell can also quickly exchange heat between the temperature equalizing plate and the temperature control medium, thereby achieving temperature control of the battery cell. Moreover, since the temperature control flow channel is integrated in the box frame, only a plurality of temperature equalizing plates need to be arranged in the accommodating cavity to achieve temperature control, and less space is occupied. It can be seen that most of the space in the battery box can be used to accommodate battery cells, which helps to increase the battery capacity.

[0017] In addition, the utility model also provides an electrical device, comprising a battery as described in any one of the above preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a battery in a preferred embodiment of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of a battery temperature control device in the battery shown;

[0021] Figure 3 is Figure 2 An enlarged schematic view of part A in the battery temperature control device shown;

[0022] Figure 4 is Figure 2 A sectional view of the battery temperature control device shown;

[0023] Figure 5 is Figure 4 An enlarged schematic view of part A in the sectional view of the battery temperature control device shown. Specific embodiments

[0024] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are 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 thus should not be construed as a limitation of the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0027] In the present utility model, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. 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 circumstances.

[0028] In the present utility model, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0030] The present utility model discloses an electric device and a battery. The above-mentioned electric device includes the above-mentioned battery and can be powered by the above-mentioned battery. Among them, the above-mentioned electric device can be a vehicle, a spacecraft, an electric toy, an electric tool, an energy storage device, a amusement device, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or an extended-range electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle and a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy or an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact drill, a concrete vibrator and a planer, etc.; the energy storage device can be an energy storage wall, a base station energy storage, a container energy storage, etc.; the amusement device can be a carousel, a drop tower, etc. The present application does not impose special restrictions on the above-mentioned electric device.

[0031] For new energy vehicles, the above battery can be used as a driving power source to replace fossil fuels and provide driving power.

[0032] Please refer to Figure 1 , in the preferred embodiment of the present utility model, the battery 10 includes a battery temperature control device 100 and a plurality of battery cells 200.

[0033] The battery temperature control device 100 is used to fix a plurality of battery cells 200 and can control the temperature of the plurality of battery cells 200. When the temperature of the battery cell 200 is too high, the battery temperature control device 100 can timely take away the heat generated by the operation of the battery cell 200; when the temperature of the battery cell 200 is too low, the battery temperature control device 100 can also heat the battery cell 200. In this way, the temperature of the battery cell 200 can be prevented from being too high or too low, so that the battery 10 can always be maintained within a suitable temperature range during operation.

[0034] The above battery cell 200 can be a lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, and its external contour can be in the shape of a cylinder, a flat body, a cuboid or other shapes, but is not limited thereto. Specifically, in this embodiment, the above battery cell 200 is a lithium-ion square shell battery.

[0035] Please also refer to Figure 2 , the battery temperature control device 100 includes a battery box 110 and a plurality of heat dissipation plates 120. Among them, the battery box 110 has a receiving cavity (not labeled in the figure) for accommodating a plurality of battery cells 200. The battery box 110 includes a box frame 111, and the box frame 111 extends along the circumference of the receiving cavity. The shape of the box frame 111 determines the external contour of the battery box 110. For example, in this embodiment, the box frame 111 is rectangular, and the formed battery box 110 is in the shape of a square shell. The battery box 110 generally further includes a bottom plate 112, and the bottom plate 112 and the box frame 111 cooperate to enclose the above receiving cavity.

[0036] A plurality of heat dissipation plates 120 are received in the receiving cavity, and both ends of each heat dissipation plate 120 respectively extend to contact the box frame 111. Specifically, in this embodiment, the heat dissipation plate 120 is in the shape of a long strip, and both ends of the heat dissipation plate 120 respectively contact the edges on opposite sides of the box frame 111. The heat dissipation plate 120 is a good conductor of heat and has high mechanical strength. Specifically, in this embodiment, a plurality of heat dissipation plates 120 are all set as aluminum plates.

[0037] A plurality of heat pipes 120 are arranged at intervals in the accommodation cavity, and battery slots 102 are formed between two adjacent heat pipes 120. Battery cells 200 are placed in the battery slots 102. Moreover, the large surfaces of each battery cell 200 are in contact with the adjacent heat pipes 120. The large surface of the battery cell 200 refers to the side surface with the largest area. Taking a square shell battery as an example, the large surfaces refer to the front and rear side surfaces. Therefore, there is a large contact area between the battery cell 200 and the heat pipe 120, so heat exchange can be quickly achieved between the battery cell 200 and the heat pipe 120.

[0038] One or more battery cells 200 are placed in each battery slot 102. For the case where multiple battery cells 200 are provided, the multiple battery cells 200 can be arranged in a single row or multiple rows. Specifically, in this embodiment, the multiple battery cells 200 in each battery slot 102 are arranged in a single row, so the two large surfaces of each battery cell 200 can be in contact with the heat pipes 120 on both sides respectively, and thus the heat exchange efficiency between the battery cell 200 and the heat pipe 120 is higher.

[0039] In addition, in order to further improve the heat exchange efficiency between the battery cell 200 and the heat pipe 120, specifically, in this embodiment, the large surfaces of each battery cell 200 are bonded to the adjacent heat pipes 120 through a heat-conducting adhesive (not shown in the figure).

[0040] Please refer to Figure 4 and Figure 5 , a temperature control flow channel 101 for circulating a temperature control medium is formed in the box body frame 111, and the temperature control flow channel 101 extends to the area where the box body frame 111 is in contact with each heat pipe 120. The heat pipe 120 transfers heat to the box body frame 111 in contact, and the box body frame 111 can also transfer heat to the temperature control medium in the temperature control flow channel 101 in contact. It can be seen that each heat pipe 120 can exchange heat with the temperature control medium flowing through the temperature control flow channel 101.

[0041] The temperature control medium can be water or a solution doped with other solutes. Generally, an inlet joint 140 and an outlet joint 130 communicating with the temperature control flow channel 101 are also provided on the box body frame 111. The temperature control flow channel 101 can be communicated with an external circulation device (not shown in the figure) through the inlet joint 140 and the outlet joint 130. The temperature control medium can be continuously circulated under the drive of the circulation device, and can release heat or absorb heat when circulating outside the temperature control flow channel 101 to reduce or increase its own temperature.

[0042] Through the conduction of the heat pipe 120, as the temperature control medium continuously circulates, the battery cell 200 can also quickly exchange heat with the temperature control medium. When the temperature of the battery cell 200 is too high, the temperature control medium releases heat and cools down when circulating outside the temperature control flow channel 101, so as to be able to take away the heat generated by the operation of the battery cell 200 in time; when the temperature of the battery cell 200 is too low, the temperature control medium absorbs heat and warms up when circulating outside the temperature control flow channel 101, so as to be able to raise the heat pipe 120 and heat the battery cell 200. In this way, the temperature control of the battery cell 200 can be realized.

[0043] In addition, since the temperature control flow channel 101 is integrated in the box frame 111, only a plurality of heat pipes 120 need to be arranged in the accommodating cavity to realize temperature control. Moreover, no flow channel is arranged in the heat pipe 120, its thickness is relatively thin, and the occupied space is small. Therefore, most of the space in the battery box 110 can be used to accommodate the battery cell 200, which helps to increase the battery capacity.

[0044] Furthermore, since no flow channel is arranged in the heat pipe 120 and the heat exchange is realized by an indirect contact mode with the temperature control medium, the risk of liquid leakage in the battery box 100 can be greatly reduced.

[0045] Please refer to again Figure 2 and Figure 3 , in this embodiment, bending portions 121 are formed at both ends of each heat pipe 120, and the bending portions 121 are abutted against the box frame 111.

[0046] The bending portion 121 can increase the contact area between the heat pipe 120 and the box frame 111, thereby improving the heat exchange efficiency between the heat pipe 120 and the temperature control medium flowing through the temperature control flow channel 101, so it helps to further improve the temperature control effect on the battery cell 200.

[0047] Furthermore, in this embodiment, clamping grooves 1111 are formed at positions of the box frame 111 corresponding to the plurality of heat pipes 120, and the bending portions 121 at both ends of each heat pipe 120 are clamped in the clamping grooves 1111.

[0048] The clamping grooves 1111 can be formed on the box frame 111 by milling. The L-shaped clamping grooves 1111 are not communicated with the temperature control flow channel 101 in the box frame 111, so no liquid leakage will be caused. Clamping the bending portion 121 into the clamping groove 1111 can improve the installation strength of the heat pipe 120, and the heat pipe 120 can be fixed to the box frame 111 without relying on other accessories, so the structure of the battery temperature control device 100 can also be simplified. In addition, by clamping the bending portion 121 into the clamping groove 1111L, both sides of the bending portion 121 can be in contact with the box frame 111, which can further increase the contact area between the heat pipe 120 and the box frame 111.

[0049] Furthermore, in this embodiment, the card slot 1111 includes a first section a extending along the box body frame 111 and a second section b perpendicular to the first section a. Both ends of the heat pipe 120 extend into the second section b and the bending portion 121 is clamped in the first section a.

[0050] It can be seen that the card slot 1111 is L-shaped. After both ends of the heat pipe 120 are inserted into the card slot 1111, the card slot 1111 can limit the heat pipe 120 in two directions, thereby improving the installation strength. Moreover, the contact area between the heat pipe 120 and the box body frame 111 can be further increased.

[0051] In this embodiment, the temperature control flow channel 101 extends around the box body frame 111 along a spiral path. That is to say, the temperature control flow channel 101 can wind around the box body frame 111 for multiple turns, and each turn is at a different height along the height direction of the box body frame 111, so that the overall temperature control flow channel 101 is spiral. In this way, the length of the temperature control flow channel 101 in the box body frame 111 can be extended, thereby further improving the heat exchange efficiency between the temperature control medium in the temperature control flow channel 101 and the heat pipe 120.

[0052] Please refer to Figure 5 again. In this embodiment, a cavity 103 isolated from the temperature control flow channel 101 is formed in the box body frame 111. The cavity 103 can be formed simultaneously with the temperature control flow channel 101 and is not communicated with the temperature control flow channel 101, so liquid leakage can be avoided. The cross-section of the cavity 103 can be in various shapes such as triangular, quadrilateral, etc. The setting of the cavity 103 can reduce the weight of the box body frame 111, thereby contributing to the lightweight design of the battery 10.

[0053] Further, in this embodiment, a plurality of cavities 103 extend along the circumferential direction of the box body frame 111, and the temperature control flow channel 101 is distributed among the plurality of cavities 103.

[0054] The extending direction of the cavity 103 is substantially the same as the extending direction of the temperature control flow channel 101, and a plurality of cavities 103 are distributed around the temperature control flow channel 101, that is, the temperature control flow channel 101 is surrounded by a plurality of cavities 103. Specifically, as Figure 4 shown, cavities 103 are distributed on the upper, lower, left, and right sides of the temperature control flow channel 101. The cavity 103 can play a buffering role to protect the temperature control flow channel 101. When the box body frame 111 is impacted or squeezed, the cavity 103 can collapse and absorb energy to reduce the direct impact on the temperature control flow channel 101, thereby effectively avoiding the rupture of the temperature control flow channel 101.

[0055] For the above-mentioned battery temperature control device 100 and battery 10, since the large surface of the battery cell 200 is in contact with the heat pipe 120, the battery cell 200 can quickly exchange heat with the heat pipe 120. Moreover, both ends of the heat pipe 120 are in contact with the box frame 111, and the temperature control flow channel 101 extends to the area where the box frame 111 is in contact with each heat pipe 120. Therefore, the heat pipe 120 can also exchange heat with the temperature control medium flowing through the temperature control flow channel 101. As the temperature control medium circulates continuously, the battery cell 200 can also quickly exchange heat with the temperature control medium through the heat pipe 120, thereby controlling the temperature of the battery cell 200. Moreover, since the temperature control flow channel 101 is integrated in the box frame 111, only a plurality of heat pipes 120 need to be arranged in the accommodation cavity to achieve temperature control, occupying a small space. It can be seen that most of the space in the battery box 110 can be used to accommodate the battery cells 200, which helps to increase the battery capacity.

[0056] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0057] 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 on the scope of the utility model patent. 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. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A battery temperature control device (100), characterized in that, Comprising: A battery box body (110) having a receiving cavity, the battery box body (110) including a box body frame (111) extending along the circumference of the receiving cavity, a temperature control flow channel (101) for circulating a temperature control medium being formed within the box body frame (111); and A plurality of heat pipes (120) received within the receiving cavity and each end of each heat pipe (120) extending to contact the box body frame (111), the plurality of heat pipes (120) being spaced apart within the receiving cavity and a battery slot (102) for placing battery cells (200) being formed between two adjacent heat pipes (120); Wherein, the temperature control flow channel (101) extends to the area where the box body frame (111) contacts each heat pipe (120).

2. The battery temperature control device (100) according to claim 1, wherein, The temperature control flow channel (101) winds around the box body frame (111) and extends along a spiral path.

3. The battery temperature control device (100) according to claim 1, wherein, A cavity (103) isolated from the temperature control flow channel (101) is formed within the box body frame (111).

4. The battery temperature control device (100) according to claim 3, characterized in that, A plurality of the cavities (103) extend along the circumference of the box body frame (111), and the temperature control flow channel (101) is distributed between the plurality of cavities (103).

5. The battery temperature control device (100) according to claim 1, characterized in that, Bending portions (121) are formed at both ends of each heat pipe (120), and the heat pipe (120) abuts against the box body frame (111) by means of the bending portions (121).

6. The battery temperature control device (100) according to claim 5, characterized in that, Slots (1111) are formed at positions of the box body frame (111) corresponding to the plurality of heat pipes (120), and the bending portions (121) at both ends of each heat pipe (120) are clamped within the slots (1111).

7. The battery temperature control device (100) according to claim 6, characterized in that, The slot (1111) includes a first section (a) extending along the box body frame (111) and a second section (b) perpendicular to the first section (a), and both ends of the heat pipe (120) extend into the second section (b) and the bending portion (121) is clamped within the first section (a).

8. A battery, characterized in that, Comprising a plurality of battery cells (200) and a battery temperature control device (100) according to any one of claims 1 to 7 above, the battery cells (200) being received within the battery slot (102), and a large surface of each battery cell (200) being in contact with an adjacent heat pipe (120).

9. The battery (10) according to claim 8, characterized in that, A large surface of each battery cell (200) is bonded to an adjacent heat pipe (120) by a thermal conductive adhesive.

10. An electrical device, characterized in that, Comprising a battery (10) according to claim 8 or 9 above.

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