Heating acquisition device and energy storage power supply

Abstract

The utility model belongs to the technical field of batteries, and discloses a heating and collecting device and an energy storage power supply, the heating and collecting device comprises a heating sheet, the heating sheet is internally provided with a heating assembly, and the heating assembly is used for electrifying and heating; the collection assembly and the heat conduction pad are both connected to the same side of the heating piece, the collection assembly is used for collecting electric signals, the heat conduction pad is used for conducting heat generated by the heating assembly, the collection assembly and the heating assembly are arranged in a staggered mode in the thickness direction of the heating piece, a receding hole is formed in the heat conduction pad, and the collection assembly is arranged in the receding hole. The heating acquisition device provided by the utility model can simplify the assembly production process, improve the production efficiency, reduce the cost of equipment and tools, improve the accuracy of electric signal acquisition, and slow down the aging speed of the acquisition assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a heating collection device and an energy storage power supply. Background Art

[0002] Energy storage power supply is a device that can store electrical energy and supply power to the outside. The energy storage power supply is equipped with a collection board for collecting battery status and performance parameters and a heating structure for heating the battery in a low temperature environment to increase the rate of the battery's electrochemical reaction and the battery's power.

[0003] In most cases, the collection board and the heating structure are two separate components that need to be installed separately, making the assembly and production process of the energy storage power supply complicated, inefficient, and with high equipment and tooling costs. If the collection board and the heating structure are installed together, it is also difficult to solve the problem of the heating structure releasing heat to the collection board.

[0004] Therefore, a heating collection device and an energy storage power supply are urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a heating acquisition device and an energy storage power supply, which can simplify the assembly production process, improve production efficiency, reduce the cost of equipment and tooling, improve the accuracy of electrical signal acquisition, and slow down the aging speed of acquisition components.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, a heating collection device is provided, comprising:

[0008] A heating plate, wherein a heating component is provided in the heating plate, and the heating component is used for heating when powered;

[0009] The collection component and the thermal pad are both connected to the same side of the heating plate. The collection component is used to collect electrical signals, and the thermal pad is used to conduct the heat generated by the heating component. In the thickness direction of the heating plate, the collection component and the heating component are staggered, and a clearance hole is provided on the thermal pad, and the collection component is arranged in the clearance hole.

[0010] Preferably, the acquisition component comprises:

[0011] Acquisition circuit, used to transmit electrical signals;

[0012] Two collection protection films, the collection circuit is configured to be encapsulated between the two collection protection films, and one of the collection protection films is connected to the heating plate.

[0013] Preferably, the acquisition component further comprises:

[0014] An electrical signal acquisition sheet, one end of which is electrically connected to the acquisition circuit, and the other end of which is electrically connected to the battery module; and / or

[0015] A temperature collecting component is electrically connected to the collecting circuit, and the temperature collecting component can extend into the battery module to collect the temperature of the battery cell.

[0016] Preferably, the clearance hole includes a main bone area and a branch area, the main bone area extends along the length direction of the thermal pad, the branch area is arranged on the side of the main bone area, the two collection protective films are located in the main bone area, and the electrical signal collection piece and / or the temperature collection component are passed through the branch area.

[0017] Preferably, a collection hole is provided on the heating plate, the collection hole is provided corresponding to the branch area, and the electrical signal collection plate and / or the temperature collection element are exposed through the collection hole.

[0018] Preferably, the acquisition component further comprises:

[0019] A heating detection component is electrically connected to the collection circuit, and is used to detect the heating temperature of the heating component.

[0020] Preferably, the heating component includes a heating circuit, the heating circuit is used for heating when powered on, and in the thickness direction of the heating plate, the heating circuit and the collection component are staggered, and the heating plate further includes:

[0021] Two heating protection layers, the heating circuit is configured to be encapsulated between the two heating protection layers.

[0022] Preferably, the heating protection layer is made of a glass cloth-based epoxy resin board.

[0023] Preferably, the thermal pad is made of thermally conductive silicone.

[0024] In a second aspect, an energy storage power supply is provided, comprising a battery module and the heating and collecting device as described above, wherein the battery module comprises a battery cell and a bus, the heating component is thermally connected to the bus, and the collecting component can collect electrical signals from the battery cell.

[0025] Beneficial effects of the utility model:

[0026] The heating collection device provided by the utility model includes a heating plate, a collection component and a thermal pad. The heating component generates heat after being energized. The thermal pad guides the heat generated by the heating component to the battery module to increase the temperature of the battery module and ensure the chemical reaction rate and power in the battery module. The collection component can collect the electrical signal of the battery module. Since the heating collection device integrates the heating component, the collection component and the thermal pad, it can be directly assembled onto the battery module as a single component, simplifying the assembly production process of the energy storage power supply, improving production efficiency, and reducing the cost of equipment and tooling. In addition, by staggering the collection component and the heating component, and arranging the collection component in the clearance hole on the thermal pad, the heat conduction from the heating plate to the collection component is reduced, the accuracy of electrical signal collection is improved, and the aging speed of the collection component is slowed down. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the heating collection device provided by the utility model;

[0028] Figure 2 It is a back view of the heating collection device provided by the utility model;

[0029] Figure 3 It is a schematic diagram of the exploded structure of the heating collection device provided by the utility model;

[0030] Figure 4 This is a schematic diagram of the exploded structure of the heating plate provided by the utility model;

[0031] Figure 5 It is a structural schematic diagram of the acquisition component provided by the utility model;

[0032] Figure 6 It is a schematic diagram of the exploded structure of the acquisition component provided by the utility model;

[0033] Figure 7 It is a structural schematic diagram of the thermal conductive pad provided by the utility model.

[0034] In the figure:

[0035] 100, heating sheet; 110, heating assembly; 111, heating circuit; 112, power supply harness; 120, heating protection layer; 121, collection hole;

[0036] 200, acquisition component; 210, acquisition circuit; 220, acquisition protection film; 230, electrical signal acquisition sheet; 240, temperature acquisition component; 250, fever detection component; 260, acquisition terminal;

[0037] 300, thermal pad; 310, clearance hole; 311, main bone area; 312, branch area; 313, clearance notch; 314, clearance opening. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] This embodiment provides an energy storage power supply, which includes a bracket, a battery module and a heating collection device. The battery module and the heating collection device are both installed in the bracket, and the heating collection device is electrically connected to the battery module. Figure 1-Figure 7As shown, the heating and collecting device includes a heating plate 100, a collecting component 200 and a thermal pad 300. The heating plate 100 is provided with a heating component 110 for generating heat when powered on. The battery module includes a battery cell and a bus. The heating component 110 is thermally connected to the bus through the thermal pad 300. The bus is made of aluminum sheet. The heating component 110 heats the bus and then conducts heat to the two tabs of the battery cell, thereby heating the battery cell itself. The collecting component 200 is used to collect the electrical signal and surface temperature of the battery cell.

[0043] Further, such as Figure 3 and Figure 4 As shown, the collection component 200 and the thermal pad 300 are both connected to the same side of the heating plate 100, that is, the side of the heating plate 100 facing the battery module. In the thickness direction of the heating plate 100, the collection component 200 and the heating component 110 are staggered, and a clearance hole 310 is provided on the thermal pad 300, and the collection component 200 is arranged in the clearance hole 310.

[0044] Specifically, the energy storage power supply provided in this embodiment heats the battery module through the heating collection device to ensure that the energy storage power supply can be used in a low temperature environment, and collects parameters such as the voltage, current and battery cell temperature of the battery module. After the heating component 110 is powered on, it generates heat, and the thermal pad 300 directs the heat generated by the heating component 110 to the battery module to increase the temperature of the battery module and ensure the chemical reaction rate and power in the battery module. The collection component 200 can collect the electrical signal of the battery module. Since the heating collection device integrates the heating component 110, the collection component 200 and the thermal pad 300, it can be directly assembled to the battery module as a single component, simplifying the assembly production process of the energy storage power supply, improving production efficiency, and reducing the cost of equipment and tooling. Moreover, by staggering the collection component 200 and the heating component 110, and setting the collection component 200 in the clearance hole 310 on the thermal pad 300, the heat conduction from the heating plate 100 to the collection component 200 is reduced, the accuracy of electrical signal collection is improved, and the aging speed of the collection component 200 is slowed down.

[0045] For example, Figure 1-Figure 4As shown, the heating assembly 110 includes a heating circuit 111 and a power supply harness 112. The heating circuit 111 is used to generate heat when powered on, in the thickness direction of the heating plate 100; one end of the power supply harness 112 is electrically connected to the heating circuit 111, and the other end of the power supply harness 112 can extend from one side of the heating plate 100 outside the heating plate 100 and be connected to an external power source to energize the heating circuit 111, so that the heating circuit 111 generates heat. Among them, there are two power supply harnesses 112, one of which is electrically connected to the positive pole of the external power source, and the other is electrically connected to the negative pole of the external power source. On the one hand, the routing arrangement of the heating circuit 111 corresponds to the layout of the busbar to concentrate the heating area and improve the heating efficiency. On the other hand, in the thickness direction of the heating collection device, the heating circuit 111 is staggered with the collection assembly 200. Specifically, the heating circuit 111 is staggered with the clearance hole 310 to avoid the heating circuit 111 directly heating the collection assembly 200 and reduce the influence of the heating assembly 110 on signal collection.

[0046] For example, Figure 4 As shown, the heating plate 100 further includes two heating protection layers 120 , and the heating circuit 111 is configured to be encapsulated between the two heating protection layers 120 . The two heating protection layers 120 fix the heating circuit 111 on the one hand, and shield the heating circuit 111 on the other hand, thereby improving structural stability.

[0047] Exemplarily, both heating protection layers 120 are made of FR4 (glass cloth-based epoxy resin board), which has excellent flame retardant and corrosion resistance, as well as excellent mechanical properties and electrical insulation properties. The heating circuit 111 is laid in the form of copper foil on one side of the heating protection layer 120 facing the other heating protection layer 120. The two heating protection layers 120 can be packaged and connected by hot pressing.

[0048] For example, Figure 5 and Figure 6 As shown, the acquisition component 200 includes an acquisition circuit 210, two acquisition protective films 220, an electrical signal acquisition sheet 230 and a temperature acquisition component 240. Among them, the acquisition circuit 210 is used to transmit electrical signals, and the acquisition circuit 210 is configured to be encapsulated between two acquisition protective films 220, one of which is adhered to the outer side of the heating protection layer 120 by a single-sided adhesive. One end of the electrical signal acquisition sheet 230 is electrically connected to the acquisition circuit 210, and the other end of the electrical signal acquisition sheet 230 is used to be electrically connected to the battery module. The temperature acquisition component 240 is electrically connected to the acquisition circuit 210, and the temperature acquisition component 240 can extend into the battery module to collect the temperature of the battery cell.

[0049] Specifically, the collection protection films 220 are all made of PI film (polyimide film), which has excellent moisture and heat resistance, excellent tensile strength and electrical insulation performance. The two collection protection films 220 are connected and packaged by hot pressing, and the collection circuit 210 is packaged between the two collection protection films 220, which provides effective physical protection for the collection circuit 210, and further reduces the heat transferred from the heating plate 100 to the collection circuit 210, slowing down the aging speed of the collection component 200. In addition, the collection protection film 220 is used to form a packaging structure, so that when producing a heating collection device, the collection component 200 can be installed as a separate integral structure, improving assembly production efficiency.

[0050] Exemplarily, the electric signal acquisition sheet 230 may include a voltage detection element, a current detection element, etc. The voltage detection element can detect the cell voltage of the battery module in real time. The current detection element can measure the charging current and the discharging current of the cell in real time. In this embodiment, the electric signal acquisition sheet 230 uses a nickel sheet. In other embodiments, the electric signal acquisition sheet 230 may also use copper sheets, nickel-plated copper sheets, and other components.

[0051] Exemplarily, the temperature acquisition component 240 can be either a temperature sensor or a thermistor. The temperature acquisition component 240 can detect the surface temperature of the battery cell and determine whether the temperature of the battery cell is within the preset normal operating temperature range. When the temperature of the battery module is higher than the highest preset value, the heating component 110 can stop heating the battery module to prevent the battery module from overheating. When the temperature of the battery module is lower than the lowest preset value, the heating component 110 can heat the battery module to increase the temperature of the battery module to achieve a more efficient operating temperature of the battery module. Figure 5 and Figure 6 As shown, in this embodiment, the temperature collection member 240 is a linear thermistor, and its detection end is attached to the surface of the battery cell.

[0052] For example, Figure 5 and Figure 6 As shown, there are multiple electrical signal acquisition pieces 230, at least two temperature acquisition pieces 240, and multiple acquisition lines 210. The multiple electrical signal acquisition pieces 230 are electrically connected to the multiple acquisition lines 210 one by one, and at least two temperature acquisition pieces 240 are electrically connected to the multiple acquisition lines 210 one by one.

[0053] For example, Figure 5 and Figure 6As shown, the ends of the electric signal acquisition piece 230 and the fever detection piece 250 connected to the acquisition circuit 210 are both encapsulated between the two acquisition protection films 220. In this embodiment, a plurality of electric signal acquisition pieces 230 are evenly distributed on both sides of the length direction of the two acquisition protection films 220, and two temperature acquisition pieces 240 are provided, and the two temperature acquisition pieces 240 are respectively arranged on both sides of the length direction of the two acquisition protection films 220.

[0054] For example, Figure 5 and Figure 6 As shown, the collection component 200 also includes a fever detection component 250, which is electrically connected to the collection circuit 210, and the fever detection component 250 is used to detect the heating temperature of the heating component 110. Specifically, the fever detection component 250 adopts a patch NTC (negative temperature coefficient thermistor), which is attached to the outside of the collection protection film 220 and is arranged corresponding to the position of the heating circuit 111, so as to detect the temperature of the heating circuit 111 through the collection protection film 220, prevent the heating circuit 111 from drying out, and improve safety. Of course, in other embodiments, the fever detection component 250 can also adopt a thermocouple, a temperature sensor, etc.

[0055] For example, Figure 5 and Figure 6 As shown, the acquisition component 200 also includes an acquisition terminal 260, which is penetrated by two acquisition protective films 220 and two heating protection layers 120 and is located at one end of the two heating protection layers 120. The acquisition terminal 260 is electrically connected to the acquisition circuit 210. The electrical signals collected by the electrical signal acquisition piece 230, the temperature acquisition piece 240 and the fever detection piece 250 can be transmitted to the acquisition terminal 260 through the acquisition circuit 210. The acquisition terminal 260 can be connected to an external signal line to transmit the electrical signals emitted by the electrical signal acquisition piece 230, the temperature acquisition piece 240 and the fever detection piece 250.

[0056] For example, Figure 7 As shown, the clearance hole 310 of the thermal pad 300 includes a main bone area 311 and a branch area 312. The main bone area 311 extends along the length direction of the thermal pad 300, and the branch area 312 is arranged on the side of the main bone area 311. Two collection protection films 220 are located in the main bone area 311, and the electrical signal collection piece 230 and / or the temperature collection piece 240 are passed through the branch area 312. In this embodiment, a plurality of branch areas 312 are provided, and the plurality of branch areas 312 are evenly spaced on both sides of the main bone area 311, and each electrical signal collection piece 230 is passed through each branch area 312 in a one-to-one correspondence. Correspondingly, as Figure 1 , Figure 3 and Figure 4As shown, the heating protection layer 120 is provided with a plurality of collection holes 121, and the plurality of collection holes 121 are arranged in one-to-one correspondence with the plurality of branch areas 312. After the heating collection device is installed into the bracket, through the collection holes 121, the operator can connect the electrical signal collection sheet 230 to the corresponding bus by laser welding or other methods.

[0057] Further, such as Figure 7 As shown, a part of the connection between the branch area 312 and the main bone area 311 is also provided with a recessed corner 313 , and the recessed corner 313 is a rounded structure, and the temperature collection component 240 passes through the recessed corner 313 .

[0058] For example, Figure 3 and Figure 7 As shown, one end of the clearance hole 310 is further provided with a clearance opening 314 , and the collection terminal 260 is passed through the clearance opening 314 .

[0059] Exemplarily, the thermal pad 300 is adhered to the outer side of the heating protection layer 120 by means of a single-sided adhesive. The thermal pad 300 is made of thermally conductive silicone, has good thermal conductivity, and has good compressibility. By setting the thermal pad 300, the gap between the heating collection device and the bus can be filled to ensure the fit of the thermal conductive surface, so as to maintain a good heat transfer path and prevent dry burning.

[0060] After the heating collection device is received as a single component, the assembly steps of the energy storage power supply provided in this embodiment are as follows:

[0061] Connect busbars and cells by laser welding;

[0062] Install the heating collection device into the bracket;

[0063] The electrical signal collection sheet 230 and the bus bar are connected by laser welding, and the temperature collection member 240 is attached to the surface of the battery cell.

[0064] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A heating collection device, characterized in that: include: A heating plate, wherein a heating component is provided in the heating plate, and the heating component is used for heating when powered; The collection component and the thermal pad are both connected to the same side of the heating plate. The collection component is used to collect electrical signals, and the thermal pad is used to conduct the heat generated by the heating component. In the thickness direction of the heating plate, the collection component and the heating component are staggered, and a clearance hole is provided on the thermal pad, and the collection component is arranged in the clearance hole.

2. The heating collection device according to claim 1, characterized in that: The acquisition component comprises: Acquisition circuit, used to transmit electrical signals; Two collection protection films, the collection circuit is configured to be encapsulated between the two collection protection films, and one of the collection protection films is connected to the heating plate.

3. The heating collection device according to claim 2, characterized in that: The acquisition component also includes: An electrical signal acquisition sheet, one end of which is electrically connected to the acquisition circuit, and the other end of which is electrically connected to the battery module; and / or A temperature collecting component is electrically connected to the collecting circuit, and the temperature collecting component can extend into the battery module to collect the temperature of the battery cell.

4. The heating collection device according to claim 3, characterized in that: The clearance hole includes a main bone area and a branch area, the main bone area extends along the length direction of the thermal pad, the branch area is arranged on the side of the main bone area, the two collection protective films are located in the main bone area, and the electrical signal collection piece and / or the temperature collection component are passed through the branch area.

5. The heating collection device according to claim 4, characterized in that: The heating plate is provided with a collection hole, the collection hole is provided corresponding to the branch area, and the electrical signal collection plate and / or the temperature collection member are exposed through the collection hole.

6. The heating collection device according to claim 2, characterized in that: The acquisition component also includes: A heating detection component is electrically connected to the collection circuit, and is used to detect the heating temperature of the heating component.

7. The heating collection device according to any one of claims 1 to 6, characterized in that: The heating component includes a heating circuit, and the heating circuit is used for heating when powered on. In the thickness direction of the heating plate, the heating circuit and the collection component are staggered. The heating plate also includes: Two heating protection layers, the heating circuit is configured to be encapsulated between the two heating protection layers.

8. The heating collection device according to claim 7, characterized in that: The heating protection layer is made of a glass cloth-based epoxy resin plate.

9. The heating collection device according to any one of claims 1 to 6, characterized in that: The thermal conductive pad is made of thermal conductive silica gel.

10. An energy storage power supply, characterized in that: It comprises a battery module and a heating and collecting device as described in any one of claims 1 to 9, wherein the battery module comprises a battery cell and a bus, the heating component is thermally connected to the bus, and the collecting component can collect electrical signals from the battery cell.

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