Battery pack and energy storage system

Abstract

The application relates to a battery pack and an energy storage system, the battery pack comprising a position recognition unit, a control interface, a digital signal input interface and a digital signal output interface; the digital signal input interface is connected with a digital signal output interface of an (i-1)th battery pack, and the digital signal output interface is connected with a digital input signal interface of an (i+1)th battery pack; i is a positive integer; the position recognition unit is used for determining position digital information of the battery pack according to digital information input by the control interface and the digital signal input interface, and transmitting the position digital information to the digital signal output interface. The battery pack provided by the application can be used to simply and quickly determine the position digital information of the battery pack.

Description

Technical Field

[0001] This application relates to the field of energy storage systems, and in particular to a battery pack and energy storage system. Background Technology

[0002] An integrated energy storage system comprises multiple battery packs and a system control unit (SCU), and the battery packs can be stacked for capacity expansion. Each battery pack includes a battery module management unit (BMU) and multiple battery cells. To better control each battery pack, the location of each battery pack needs to be known.

[0003] In traditional technology, the current battery pack's BMU typically receives information from the previous battery pack's BMU, and software is used to analyze this information to determine the current battery pack's location.

[0004] However, traditional software-based methods for determining the location of the battery pack are quite complex. Utility Model Content

[0005] Therefore, it is necessary to provide a battery pack and energy storage system to address the aforementioned technical problems.

[0006] In a first aspect, one embodiment of this application provides a battery pack, which includes a position identification unit, a control interface, a digital signal input interface, and a digital signal output interface;

[0007] The digital signal input interface is connected to the digital signal output interface of the (i-1)th battery pack, and the digital signal output interface is connected to the digital signal input interface of the (i+1)th battery pack; i is a positive integer;

[0008] The position identification unit is used to determine the position digital information of the battery pack based on the digital information input from the control interface and the digital signal input interface, and then transmit the position digital information to the digital signal output interface.

[0009] In one embodiment, the digital information input from the control interface to the position recognition unit is a first value, the digital information input from the digital signal input interface to the position recognition unit is a second value, and the position digital information is a third value.

[0010] In one embodiment, the control interface includes a plurality of first pins, the digital signal input interface includes a plurality of second pins, and the digital signal output interface includes a plurality of third pins;

[0011] The digital information input to the control interface is input in binary form through multiple first pins; the digital information input to the digital signal input interface is input in binary form through multiple second pins; and the position digital information output by the digital signal output interface is output in binary form through multiple third pins.

[0012] In one embodiment, the battery pack further includes a control unit connected to a digital signal output interface;

[0013] The control unit is used to input digital information from the control interface to the position identification unit;

[0014] The control unit is also used to receive position digital information transmitted to the digital signal output interface.

[0015] In one embodiment, the battery pack further includes: multiple wires, a control interface connected to the output terminal of the control unit via the wires, a digital signal input interface connected to the digital signal output interface of the (i-1)th battery pack via the wires, and a digital signal output interface connected to the digital signal input interface of the (i+1)th battery pack via the wires.

[0016] In one embodiment, the location identification unit includes a plurality of fourth pins, a plurality of fifth pins, and a plurality of sixth pins, wherein the plurality of fourth pins are connected to a plurality of first pins, the plurality of fifth pins are connected to a plurality of second pins, and the plurality of sixth pins are connected to a plurality of third pins;

[0017] The position recognition unit is connected to the control interface through multiple fourth pins and multiple first pins, the position recognition unit is connected to the digital signal input interface through multiple fifth pins and multiple second pins, and the position recognition unit is connected to the digital signal output interface through multiple sixth pins and multiple third pins.

[0018] In one embodiment, the position recognition unit includes: a plurality of position recognition components, each position recognition component including a fourth pin, a fifth pin, a sixth pin, a first carry pin, and a second carry pin;

[0019] The first carry pin of the position recognition component is connected to the second carry pin of the (j-1)th position recognition component, and the second carry pin of the position recognition component is connected to the first carry pin of the (j+1)th position recognition component; j is a positive integer.

[0020] In one embodiment, the location identification unit further includes a ground pin and a power pin.

[0021] Secondly, one embodiment of this application provides an energy storage system, including at least one battery pack and a control device as provided in the first aspect above, wherein the control device is communicatively connected to a control unit in the battery pack;

[0022] The control device is used to receive the corresponding battery pack location digital information from the control unit.

[0023] In one embodiment, the energy storage system further includes a communication bus, through which the control device communicates with the control unit.

[0024] This application provides a battery pack and an energy storage system. The battery pack includes a position identification unit, a control interface, a digital signal input interface, and a digital signal output interface. The digital signal input interface is connected to the digital signal output interface of the (i-1)th battery pack, and the digital signal output interface is connected to the digital signal input interface of the (i+1)th battery pack; i is a positive integer. The position identification unit determines the position digital information of the battery pack based on the digital information input from the control interface and the digital signal input interface, and transmits the position digital information to the digital signal output interface. In this embodiment, compared with the conventional method of determining the position of the battery pack by acquiring software, the method of determining the position digital information of the battery pack by calculating the received digital information through the position identification unit in the battery pack is simple and easy to implement, and can improve the efficiency of determining the position digital information of the battery pack. Furthermore, it eliminates the need for software processing using the BMU in the battery pack, thus reducing the consumption of BMU resources. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a battery pack provided in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of a battery pack provided in another embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of a battery pack provided in another embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of a battery pack provided in another embodiment of this application;

[0030] Figure 5 A schematic diagram of a location identification unit provided in one embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the structure of a location identification unit provided in another embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the structure of an energy storage system provided in one embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. The i-th battery pack; 11. The (i-1)-th battery pack; 12. The (i+1)-th battery pack; 20. Control device; 30. Communication bus; 100. Position recognition unit; 110. Control interface; 111. First pin; 120. Digital signal input interface; 121. Second pin; 130. Digital signal output interface; 131. Third pin; 200. Control unit; 300. Wire; G. Ground pin; V. Power supply pin; C1. First carry pin; C2. Second carry pin; 104. The j-th position recognition component; 105. The (j-1)-th position recognition component; 106. The (j+1)-th position recognition component. Detailed Implementation

[0035] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0037] It is understood that the term "connection" in the following embodiments should be interpreted as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., transmit data through electrical signals. Unless otherwise specified, the term "connection" in the following embodiments can refer to direct or indirect connections.

[0038] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0039] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the storage of the stated features, integrals, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integrals, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0040] First, before introducing the technical solutions of the embodiments disclosed in this application, the background technology or technological evolution on which the embodiments of this application are based will be introduced. In the field of energy storage systems, an integrated energy storage device includes multiple battery packs and a system control unit (SCU), and the battery packs can be stacked for capacity expansion. Each battery pack includes a battery module management unit (BMU) and multiple battery cells. In order to better control each battery pack, the SCU needs to know the location of each battery pack. In conventional technology, the BMU in the current battery pack usually receives information sent by the BMU of the previous battery pack, and uses software to analyze the information to determine the location of the current battery pack, and then uploads it to the system control unit. However, the conventional method of determining the location of the battery pack based on software is relatively complex. In view of this, this application provides a battery pack that can determine the location of the battery pack simply and quickly.

[0041] Please see Figure 1 One embodiment of this application provides a battery pack, which includes a position identification unit 100, a control interface 110, a digital signal input interface 120, and a digital signal output interface 130.

[0042] Control interface 110 is an interface for receiving digital information, which can be input in binary representation. Control interface 110 includes multiple pins, and digital information can be input from these pins in the form of high or low levels.

[0043] The digital signal input interface 120 is an interface for receiving digital information, which can be input into the digital signal input interface 120 in binary representation. The digital signal input interface 120 includes multiple pins, and digital information can be input from the multiple pins in the form of high or low levels.

[0044] Digital signal output interface 130 is an interface for outputting digital information, which can be output in binary representation. Digital signal output interface 130 includes multiple pins, and digital information can be output from multiple pins in the form of high or low levels.

[0045] A digital information can be input to the position identification unit 100 in the battery pack through the control interface 110, another digital information can be input to the position identification unit 100 in the battery pack through the digital signal input interface 120, and the digital information output by the position identification unit 100 in the battery pack can be output through the digital signal output interface 130.

[0046] The battery pack provided in this embodiment is the i-th battery pack 10. The digital signal input interface 120 of the i-th battery pack 10 is connected to the digital signal output interface 130 of the (i-1)-th battery pack 11, and the digital signal output interface 130 of the i-th battery pack 10 is connected to the digital signal input interface 120 of the (i+1)-th battery pack 12. Here, i is a natural number greater than zero, that is, i is a positive integer.

[0047] It should be noted that the battery pack positions shown in (i-1), i, and (i+1) above are relative positions of the battery pack's physical spatial location, and do not represent the absolute position of the battery pack. That is, according to the above connection relationship, the SCU does not know the position of each battery pack at this time.

[0048] In an optional embodiment, the energy storage system may include a battery pack whose digital signal input interface can input an initial value, such as zero in binary form (0000), and whose digital signal output interface can output location information.

[0049] In another alternative embodiment, the energy storage system may include multiple battery packs. The digital information input to the digital signal input interface of the first battery pack can be an initial value, for example, the digital signal input interface input is zero in binary form, i.e., 0000. The digital signal output interface of the first battery pack is connected to the digital signal input interface of the second battery pack, and the digital signal output interface of the second battery pack is connected to the digital signal input interface of the third battery pack.

[0050] The location identification unit 100 can receive digital information input through the control interface 110 and digital information input through the digital signal input interface 120. Based on the digital information input through the control interface 110 and the digital signal input interface 120, the location identification unit 100 can determine the location digital information of the battery pack corresponding to the location identification unit 100.

[0051] Understandably, the position recognition unit 100 performs simple calculations based on the digital information input from the control interface 110 and the digital information input from the digital signal input interface 120 to determine the position digital information of the battery pack.

[0052] In an optional embodiment, the location identification unit 100 can calculate the sum between the digital information input by the control interface 110 and the digital information input by the digital signal input interface 120 to obtain the corresponding battery pack location digital information.

[0053] The location identification unit 100 transmits the calculated location digital information to the digital signal output interface 130 so that the location digital information can be input from the digital signal input interface 120 of the (i+1)th battery pack 12.

[0054] In this embodiment, compared with the conventional method of determining the location of the battery pack by acquiring software, this application uses the location identification unit 100 in the battery pack to calculate the received digital information to determine the location digital information of the battery pack. Thus, the location identification unit 100 integrates the functions of receiving and calculating digital information. That is, by performing simple logical operations through hardware structure, the battery pack can be located without deploying or executing any software program. This eliminates the need for preliminary work such as software installation, debugging, version maintenance, and compatibility testing, and avoids potential delays caused by code complexity when executing software programs, thereby improving the efficiency of determining the location digital information of the battery pack. Especially in scenarios with a large number of battery packs and the need for rapid location, this application uses the location identification unit 100 to perform simple logical operations to locate the battery pack, improving overall location efficiency. Furthermore, it eliminates the need for software processing using the BMU in the battery pack, reducing the consumption of BMU resources.

[0055] In one embodiment, the digital information input from the control interface 110 to the position identification unit 100 is a first value, the digital information input from the digital signal input interface 120 to the position identification unit 100 is a second value, and the position digital information is a third value.

[0056] It is understood that the digital signals input from the control interface 110 and the digital signal input interface 120 to the position identification unit 100 in the corresponding battery pack 10 are a first value and a second value, respectively. The position identification unit 100 calculates the sum of the first value and the second value to obtain a third value, i.e., the position digital information. In this embodiment, the representation of the first value, the second value, and the third value is not limited, as long as their function can be achieved.

[0057] In an optional embodiment, the first, second, and third values ​​can all be in decimal representation. In an energy storage system comprising multiple batteries, assuming that each battery pack receives the same first value 'a' from its control interface (a=1), the second value 'b1' input to the digital signal input interface of the first battery pack is an initial value (b1=0), the position information of the first battery pack (i.e., the third value c1=a+b1=1), and the output of the third value c1=1 from the digital signal output interface of the first battery pack, the second value 'b2' input to the digital signal input interface of the second battery pack (i.e., the third value c2=a+b2=2), and so on, the position information of other battery packs in the energy storage system can be obtained.

[0058] In this embodiment, the digital information input from the control interface 110 to the position identification unit 100 is the first value, the digital information input from the second digital signal input interface 120 to the position identification unit 100 is the second value, and the position digital information is the third value. In this way, when determining the position digital information, the position identification unit 100 only needs to perform a summation operation on the first value and the second value to quickly generate the position digital information. There is no need to call a complex algorithm library or perform a large number of iterative calculations, which can reduce the design difficulty of the position identification unit 100 and reduce the resource consumption during the calculation process, thereby improving the efficiency of determining the position of the battery pack.

[0059] In one embodiment, such as Figure 2 As shown, the control interface 110 includes multiple first pins 111, the digital signal input interface 120 includes multiple second pins 121, and the digital signal output interface 130 includes multiple third pins 131. The number of first pins 111, second pins 121, and third pins 131 can be the same or different.

[0060] The digital information input to the control interface 110 is input in binary form through multiple first pins 111, the digital information input to the digital signal input interface 120 is input in binary form through multiple second pins 121, and the position digital information output by the digital signal output interface 130 is output in binary form through multiple third pins 131.

[0061] It is understood that the digital information input from the control interface 110 to the position recognition unit 100 is input through multiple first pins 111 set in the control interface 110. The number of first pins 111 is related to the magnitude and representation of the digital information (first value) input to the control interface 110. The digital information (first value) input to the control interface 110 can be input in binary form. As the first value increases, the number of first pins 111 increases. For example: if the first value is 1-3, the number of first pins 111 is 2; if the second value is 4-7, the number of first pins 111 is 3; if the second value is 8-15, the number of first pins 111 is 4.

[0062] The digital information input from the digital signal input interface 120 to the position recognition unit 100 is input through multiple second pins 121 provided in the digital signal input interface 120. The number of second pins 121 is related to the magnitude and representation of the digital information (second value) input from the digital signal input interface 120. For a description of the relationship between the number of second pins 121 and the magnitude of the second value, please refer to the specific description of the relationship between the number of first pins 111 and the magnitude of the first value in the above embodiment; it will not be repeated here.

[0063] The position digital information output from the digital signal output interface 130 is output through multiple third pins 131. The number of third pins 131 is related to the magnitude and representation of the position digital information (third value). For a description of the relationship between the number of third pins 131 and the magnitude of the third value, please refer to the specific description of the relationship between the number of first pins 111 and the magnitude of the first value in the above embodiment, which will not be repeated here.

[0064] In an optional embodiment, such as Figure 2 As shown, assuming that the first, second, and third values ​​are all represented as 4-bit binary numbers, and the number of the first pin 111, the second pin 121, and the third pin 131 is the same, which is 4, then the battery pack positions can be represented as 1-15.

[0065] In this embodiment, the digital information input to the control interface 110 is input in binary form through multiple first pins 111, the digital information input to the digital signal input interface 120 is input in binary form through multiple second pins 121, and the position digital information output by the digital signal output interface 130 is output in binary form through multiple third pins 131. This makes the physical structure of the battery pack simple and low-cost. Furthermore, the method by which the position identification unit 100 determines the position digital information based on the input digital information is simple, and the transmission stability of the digital information is high, which can improve the efficiency and accuracy of position identification of the battery pack.

[0066] In one embodiment, the battery pack 10 further includes a control unit 200, which is connected to the digital signal output interface 130. The control unit 200 is used to input digital information from the control interface 110 to the position identification unit 100; the control unit 200 is also used to receive position digital information transmitted to the digital signal output interface 130.

[0067] The control unit 200 may be a Battery Module Management Unit (BMU) within the battery pack. The control unit 200 is communicatively connected to the digital signal output interface 130 and can receive location digital information output from the digital signal output interface 130. The digital information input from the control interface 110 to the location identification unit 100 may also be input from the control unit 200.

[0068] It is understood that the control unit 200 includes an input terminal and an output terminal. The input terminal of the control unit 200 is connected to the digital signal output interface 130 for receiving position digital information, and the output terminal of the control unit 200 is connected to the control interface 110 for inputting digital information to the control interface 110.

[0069] In an optional embodiment, after receiving the location digital information, the control unit 200 can directly transmit the location digital information to the SCU in the energy storage system, or it can store the location digital information so that the SCU in the energy storage system can directly retrieve it from the control unit 200 when needed.

[0070] In this embodiment, the control unit 200 in the battery pack can be connected to the digital signal output interface 130 or the control interface 110. The control unit 200 is used to input digital information to the position identification unit 100 through the control interface 110, and is also used to output position digital information from the digital signal output interface 130. In this way, the control unit 200 can obtain the position digital information of the corresponding battery pack, which makes it easier for the SCU in the energy storage system to obtain the position digital information of each battery pack, thereby improving the practicality of the battery pack.

[0071] In one embodiment, such as Figure 4 As shown, the battery pack also includes multiple wires 300. The control interface 110 is connected to the output terminal of the control unit 200 through the wires 300. The digital signal input interface 120 is connected to the digital signal output interface 130 of the (i-1)th battery pack through the wires 300. The digital signal output interface 130 is connected to the digital signal input interface 120 of the (i+1)th battery pack through the wires 300.

[0072] The control unit 200 in the battery pack is wired to the control interface 110, meaning the output of the control unit 200 is connected to the control interface 110 via a wire 300. The digital signal input interface 120 of the i-th battery pack 10 is connected to the digital signal output interface 130 of the (i-1)-th battery pack 11 via a wire 300, and the digital signal output interface 130 of the i-th battery pack 10 is connected to the digital signal input interface 120 of the (i+1)-th battery pack 12 via a wire 300. The wire 300 can be a solid metal wire or a printed conductor deployed on the copper foil layer of the circuit board using an etching process.

[0073] In this embodiment, the control unit 200 is connected to the control interface 110 via a wire 300, and the digital signal input interface 120 and digital signal output interface 130 between the two battery packs are also connected via a wire 300. This simplifies the physical structure of the battery packs and reduces costs. Furthermore, the connection via the wire 300 improves the efficiency and reliability of transmitted digital information.

[0074] In one embodiment, the location identification unit 100 includes a plurality of fourth pins, a plurality of fifth pins, and a plurality of sixth pins. The plurality of fourth pins are connected to a plurality of first pins 111, the plurality of fifth pins are connected to a plurality of second pins 121, and the plurality of sixth pins are connected to a plurality of third pins 131. Figure 5 As shown, the thin pins represent multiple pins on the position recognition unit 100, including multiple fourth pins including pin A1, pin A2, pin A3 and pin A4, multiple fifth pins including pin B1, pin B2, pin B3 and pin B4, and multiple sixth pins including pin S1, pin S2, pin S3 and pin S4. Figure 5 The thick pins represent multiple first pins 111 on the control interface 110, multiple second pins 121 on the digital signal input interface 120, and multiple third pins 131 on the digital signal output interface 130.

[0075] The position recognition unit 100 is connected to the control interface 110 through multiple fourth pins, the position recognition unit 100 is connected to the digital signal input interface 120 through multiple fifth pins, and the position recognition unit 100 is connected to the digital signal output interface 130 through multiple sixth pins.

[0076] The number of the plurality of fourth pins is the same as the number of the plurality of first pins 111. The description of the fourth pins can be found in the description of the first pins 111 in the above embodiments, and will not be repeated here. The number of the plurality of fifth pins is the same as the number of the plurality of second pins 121. The description of the fifth pins can be found in the description of the second pins 121 in the above embodiments, and will not be repeated here. The number of the plurality of sixth pins is the same as the number of the plurality of third pins 131. The description of the sixth pins can be found in the description of the third pins 131 in the above embodiments, and will not be repeated here.

[0077] Multiple fourth pins are located on the position recognition unit 100, and multiple first pins 111 are located on the control interface 110. The multiple fourth pins are connected to the multiple first pins 111 to connect the position recognition unit 100 to the control interface 110. Multiple fifth pins are located on the position recognition unit 100, and multiple second pins 121 are located on the digital signal input interface 120. The multiple fifth pins are connected to the multiple second pins 121 to connect the position recognition unit 100 to the digital signal input interface 120. Multiple sixth pins are located on the position recognition unit 100, and multiple third pins 131 are located on the digital signal output interface 130. The multiple sixth pins are connected to the multiple third pins 131 to connect the position recognition unit 100 to the digital signal output interface 130.

[0078] In this embodiment, the position identification unit 100 is connected to the control interface 110, the digital signal input interface 120, and the digital signal output interface 130 through a one-to-one correspondence between multiple fourth pins, multiple fifth pins, multiple sixth pins, and multiple first pins 111, multiple second pins 121, and multiple third pins 131, respectively. This simplifies the connection between the position identification unit 100 and the control interface 110, the digital signal input interface 120, and the digital signal output interface 130, resulting in a simple physical structure for the battery pack, low design difficulty, and low cost.

[0079] In one embodiment, such as Figure 6 As shown, the position recognition unit 100 includes multiple position recognition components, each of which includes a fourth pin, a fifth pin, a sixth pin, a first carry pin C1, and a second carry pin C2.

[0080] The first carry pin C1 of the j-th position recognition component 104 is connected to the second carry pin C2 of the (j-1)-th position recognition component 105, and the second carry pin C2 of the j-th position recognition component 104 is connected to the first carry pin C1 of the (j+1)-th position recognition component 106; j is a positive integer, that is, j is a natural number greater than zero.

[0081] like Figure 6As shown, the position recognition unit 100 includes a (j-1)th position recognition component 105, a j-th position recognition component 104, and a (j+1)th position recognition component 106. The (j-1)th position recognition component 105 includes pins A1, B1, and S1; the j-th position recognition component 104 includes pins A2, B2, and S2; and the (j+1)th position recognition component 106 includes pins A3, B3, and S3. Each position recognition component includes a fourth pin, a fifth pin, and a sixth pin. The fourth pin is connected to the corresponding first pin 111, the fifth pin is connected to the corresponding second pin 121, and the sixth pin is connected to the corresponding third pin 131, enabling the position recognition component to connect to the control interface 110, the digital signal input interface 120, and the digital signal output interface 130. The first carry pin C1 of the position recognition component is for low-order carry, and the second carry pin C2 is for high-order carry. The first carry pin C1 of the j-th position recognition component 104 is connected to the second carry pin C2 of the (j-1)-th position recognition component, and the second carry pin C2 of the j-th position recognition component 104 is connected to the first carry pin C1 of the (j+1)-th position recognition component 106.

[0082] In this embodiment, the position identification unit 100 receives digital information input from the control interface 110 and the digital signal input interface 120 through multiple position identification components, determines the position digital information of the battery pack, and transmits the position digital information to the digital signal output interface 130 to realize the positioning of the battery pack. Such a position identification unit 100 has a simple structure, low design difficulty, and is easy to implement.

[0083] In one embodiment, such as Figure 5 As shown, the position identification unit 100 also includes a ground pin G and a power supply pin V. The ground pin G forms a current loop and can serve as a reference potential for the position identification unit 100. The reference potential is typically 0V, and the high or low levels input to the plurality of fourth, fifth, and sixth pins in the position identification unit 100 are all referenced to the ground pin G. The power supply pin V provides the operating voltage and can supply a DC operating voltage to the plurality of position identification components in the position identification unit 100.

[0084] In this embodiment, the location identification unit 100 can be kept working normally by grounding pin G and power supply pin V, thereby improving the reliability of the location identification unit 100.

[0085] Please see Figure 7One embodiment of this application provides an energy storage system, including at least one battery pack and a control device 20 as provided in the above embodiments. The control device 20 is communicatively connected to a control unit 200 in the battery pack. The control device 20 is used to receive the corresponding battery pack location digital information from the control unit 200.

[0086] The energy storage system may include one battery pack or multiple battery packs. The control device 20 in the energy storage system is communicatively connected to the control unit 200 in the battery pack. It can receive location digital information transmitted by the control unit 200 and can also obtain location digital information from the control unit 200 when needed. The control device 20 may be an SCU (System-Controlled Unit).

[0087] The energy storage system provided in this application includes at least one battery pack provided in the above embodiments. Therefore, the energy storage system has all the beneficial effects of the battery pack provided in the above embodiments, which will not be repeated here.

[0088] In one embodiment, please see [link to previous article]. Figure 7 The energy storage system also includes a communication bus 30, through which the control device 20 communicates with the control unit 200.

[0089] It is understood that the control device 20 and the control unit 200 are connected by a wired communication connection, i.e., through a communication bus. The communication bus can be a Controller Area Network (CAN).

[0090] In this embodiment, the control device 20 is communicatively connected to the control unit 200 via the communication bus 30, which can improve the efficiency and reliability of transmitting location digital information. Furthermore, in the case of an energy storage system including multiple battery packs, wiring can be simplified, the complexity of the energy storage system can be reduced, and the scalability and flexibility of the energy storage system can be improved.

[0091] In the description of this specification, references to terms such as "an embodiment," "an alternative embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this description, the illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery pack, characterized in that, It includes a position recognition unit, a control interface, a digital signal input interface, and a digital signal output interface; The digital signal input interface is connected to the digital signal output interface of the (i-1)th battery pack, and the digital signal output interface is connected to the digital signal input interface of the (i+1)th battery pack; i is a positive integer; The location identification unit is used to determine the location digital information of the battery pack based on the digital information input by the control interface and the digital signal input interface, and transmit the location digital information to the digital signal output interface.

2. The battery pack according to claim 1, characterized in that, The digital information input from the control interface to the location identification unit is a first value, the digital information input from the digital signal input interface to the location identification unit is a second value, and the location digital information is a third value.

3. The battery pack according to claim 1, characterized in that, The control interface includes multiple first pins, the digital signal input interface includes multiple second pins, and the digital signal output interface includes multiple third pins. The digital information input to the control interface is input in binary form through the plurality of first pins, the digital information input to the digital signal input interface is input in binary form through the plurality of second pins, and the position digital information output by the digital signal output interface is output in binary form through the plurality of third pins.

4. The battery pack according to claim 1, characterized in that, The battery pack further includes a control unit, which is connected to the digital signal output interface; The control unit is used to input digital information from the control interface to the location identification unit; The control unit is also used to receive the position digital information transmitted to the digital signal output interface.

5. The battery pack according to claim 4, characterized in that, The battery pack further includes: multiple wires, the control interface is connected to the output terminal of the control unit through the wires, the digital signal input interface is connected to the digital signal output interface of the (i-1)th battery pack through the wires, and the digital signal output interface is connected to the digital signal input interface of the (i+1)th battery pack through the wires.

6. The battery pack according to claim 3, characterized in that, The location identification unit includes multiple fourth pins, multiple fifth pins, and multiple sixth pins. The multiple fourth pins are connected to the multiple first pins, the multiple fifth pins are connected to the multiple second pins, and the multiple sixth pins are connected to the multiple third pins. The position recognition unit is connected to the control interface through the plurality of fourth pins and the plurality of first pins, the position recognition unit is connected to the digital signal input interface through the plurality of fifth pins and the plurality of second pins, and the position recognition unit is connected to the digital signal output interface through the plurality of sixth pins and the plurality of third pins.

7. The battery pack according to claim 6, characterized in that, The position recognition unit includes: a plurality of position recognition components, each of the position recognition components including the fourth pin, the fifth pin, the sixth pin, the first carry pin, and the second carry pin; The first carry pin of the position recognition component is connected to the second carry pin of the (j-1)th position recognition component, and the second carry pin of the position recognition component is connected to the first carry pin of the (j+1)th position recognition component; j is a positive integer.

8. The battery pack according to claim 6, characterized in that, The location identification unit also includes a ground pin and a power pin.

9. An energy storage system, characterized in that, Includes at least one battery pack and a control device as described in any one of claims 1-8, wherein the control device is communicatively connected to a control unit in the battery pack; The control device is used to receive the corresponding battery pack location digital information from the control unit.

10. The energy storage system according to claim 9, characterized in that, The energy storage system further includes a communication bus, through which the control device communicates with the control unit.

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